阅读说明：本技术 Vitrigel膜干燥体的制造方法以及制造装置 (Method and apparatus for producing Vitrigel film dried body ) 是由 竹泽俊明 于 2018-04-12 设计创作，主要内容包括：本发明提供一种Vitrigel膜干燥体的制造方法,其能够得到具有没有褶皱的平滑表面的Vitrigel膜干燥体。Vitrigel膜干燥体的制造方法依次具备以下工序：工序1,将具有1个以上凹部的构件A与具有1个以上贯穿孔的构件B按照使所述凹部与所述贯穿孔重叠的方式同心状地配置、载置；工序2,从所述构件B的所述贯穿孔注入溶胶；工序3,使所述溶胶凝胶化；工序4,将所述工序3中获得的水凝胶在形成于所述构件A以及所述构件B内的状态下进行干燥使其玻璃化；工序5,将所述工序4中获得的水凝胶干燥体进行水合；工序6,将所述工序5中获得的Vitrigel干燥再一次使其玻璃化；以及工序7,将由所述工序6获得的Vitrigel干燥体中微少地覆盖在上述构件A的顶面上的部分进行切离。(The present invention provides a method for manufacturing a Vitrigel film dried body, which can obtain a Vitrigel film dried body having a smooth surface without wrinkles. The method for producing a Vitrigel membrane dried body comprises the following steps in this order: a step 1 of disposing and placing a member a having 1 or more recessed portions and a member B having 1 or more through-holes concentrically such that the recessed portions and the through-holes overlap each other; step 2 of injecting sol from the through-hole of the member B; step 3 of gelling the sol; a step 4 of drying the hydrogel obtained in the step 3 in a state of being formed in the member a and the member B to vitrify the hydrogel; step 5 of hydrating the dried hydrogel obtained in step 4; a step 6 of drying the Vitrigel obtained in the step 5 and vitrifying the dried Vitrigel; and a step 7 of cutting off a portion of the Vitrigel dried body obtained in the step 6, which slightly covers the top surface of the member a.)

1. A method for producing a Vitrigel membrane dried body, comprising the following steps in this order:

step 1, disposing and placing a member A having 1 or more recessed portions and a member B having 1 or more through-holes concentrically such that the recessed portions of the member A and the through-holes of the member B overlap each other,

in the member A, the bottom surface of the recess is composed of a 1 st material having a low adsorbability to the hydrogel at the center and a 2 nd material having a high adsorbability to the hydrogel at the peripheral portion,

in the member B, the size of the cross section of the through-hole is substantially the same as the size of the cross section of the recess of the member A,

step 2 of injecting sol from the through-hole of the member B,

step 3 of allowing the member A and the member B into which the sol has been injected to stand to gel the sol,

step 4 of drying and vitrifying the hydrogel obtained in step 3 in a state of being formed in the member A and the member B,

step 5 of hydrating the dried hydrogel obtained in step 4 in a state of being formed in the member A and the member B,

a step 6 of drying and vitrifying again the Vitrigel obtained in the step 5 in a state of being formed in the member a and the member B, and

and a step 7 of cutting off a portion of the Vitrigel dried body obtained in the step 6, which slightly covers the top surface of the member a.

2. The method of manufacturing a Vitrigel film dried body according to claim 1, wherein the 1 st material is detachably attached to a bottom surface of the recess of the member a.

3. A method for manufacturing a Vitrigel film dried body-bonded apparatus using a Vitrigel film dried body obtained by the method for manufacturing a Vitrigel film dried body according to claim 1 or 2, the method comprising the steps of:

a step 8 of separating the member B from the member A in a state where the Vitrigel film dried body is disposed in the member A and the member B,

disposing a member C having 1 or more recessed portions concentrically such that the recessed portions of the member A and the recessed portions of the member C overlap each other, placing the member A on the member C, inserting a cylindrical member into the recessed portions of the member C in a manner such that the cylindrical member can be inserted and removed, the cylindrical member having an adhesive layer on a peripheral portion of a surface on a side contacting the Vitrigel film dried body, and the recessed portions of the member C having a cross-sectional dimension substantially equal to a cross-sectional dimension of the recessed portions of the member A, and

and a step 9 of separating the member a from the member C and removing the cylindrical member to which the Vitrigel film dried body is bonded from the member a.

4. The method for manufacturing a device to which a Vitrigel film dried body is bonded according to claim 3, further comprising the following steps in order after the step 9:

a step 10 of inserting the Vitrigel film dried body-bonded cylindrical member obtained in the step 9 into a 2 nd member C in a manner such that the surface to which the Vitrigel film dried body is bonded is in contact with the bottom surface, and forming an adhesive layer on the peripheral edge of the surface of the cylindrical member to which the Vitrigel film dried body is not bonded,

a step 11 of separating the 2 nd Vitrigel film dried body from the 2 nd component A in a state where the 2 nd Vitrigel film dried body obtained by the Vitrigel film dried body manufacturing method is formed in the 2 nd component A and the 2 nd component B,

placing the 2 nd member C obtained in the step 10 on the 2 nd member C so that the recessed portion of the 2 nd member A and the recessed portion of the 2 nd member C are concentrically arranged and the adhesive layer of the 2 nd member C on the surface to which the Vitrigel dry body is not bonded is brought into contact with the 2 nd Vitrigel dry body formed in the 2 nd member A, and

and a step 12 of separating the 2 nd member C from the 2 nd member a, and taking out a cylindrical member having the Vitrigel film dried bodies bonded on both surfaces thereof from the 2 nd member a.

5. A Vitrigel film dried body manufacturing apparatus comprising a member A and a member B,

the member A has 1 or more recessed portions, and the bottom surface of the recessed portion is composed of a 1 st material having low adsorbability to hydrogel in the center portion and a 2 nd material having high adsorbability to hydrogel in the peripheral portion, and the member B has 1 or more through holes having a cross-sectional size substantially equal to that of the recessed portion of the member A,

when the member a and the member B are concentrically arranged, the recessed portion and the through-hole are arranged so as to overlap each other.

6. The Vitrigel film dried body manufacturing apparatus according to claim 5, wherein the 1 st material is detachably attached to a bottom surface of the recess of the member A.

7. An apparatus for manufacturing a device to which a Vitrigel film dried body is bonded, comprising:

an apparatus for producing the Vitrigel film dried body as set forth in claim 5 or 6, and

a member C having 1 or more recessed portions having a cross-sectional dimension substantially the same as that of the recessed portion of the member A,

the recessed part of the member C is inserted into a cylindrical member which is a main body of the apparatus to which a Virgigel film dried body is bonded,

when the member a and the member C are concentrically arranged, the recess of the member a and the recess of the member C are arranged so as to overlap each other.

8. The apparatus for manufacturing a device to which a Vitrigel film dried body is bonded according to claim 7, wherein the apparatus for manufacturing a Vitrigel film dried body comprises 2 or more than one Vitrigel film dried bodies.

Technical Field

The present invention relates to a method and an apparatus for producing a Vitrigel film dried body. More specifically, the present invention relates to a method and an apparatus for manufacturing a Vitrigel film dried body, and a method and an apparatus for manufacturing a device to which a Vitrigel film dried body obtained by the method and the apparatus is bonded.

The present application claims priority from Japanese patent application No. 2017-098330, filed in Japan on 17.5.2017, the contents of which are incorporated herein by reference.

Background

The inventors have developed a chamber having a collagen Vitrigel film (collagen Vitrigel film) dry body (see, for example, patent document 1). First, a collagen Vitrigel membrane dry body having a smooth surface without wrinkles, which is integrated with a Parafilm (registered trademark), is manufactured (see, for example, patent document 2), and the dry body is attached to a cylindrical chamber main body, and then the Parafilm (registered trademark) is peeled off, thereby manufacturing a chamber having the collagen Vitrigel membrane dry body. Conventionally, a chamber including a collagen Vitrigel film dried body is manufactured by drying a collagen Vitrigel film held between 2 pieces of ring magnets (see, for example, patent document 3), attaching the collagen Vitrigel film dried body to a cylindrical chamber main body, and then cutting off unnecessary portions.

In addition, the inventors have developed a method of attaching a silicon-treated polyethylene terephthalate (PET) film under a collagen Vitrigel film in order to prevent the collagen Vitrigel film from being bent during hydration in a chamber having a dry body of the collagen Vitrigel film (see, for example, patent document 4).

Further, the present inventors have developed a cell-encapsulating device including a collagen Vitrigel membrane dried body. In the manufacturing method, first, the collagen Vitrigel membrane sandwiched between 2 pieces of ring magnets is dried to manufacture a collagen Vitrigel membrane dried body (see, for example, patent document 3). Then, the collagen Vitrigel membrane dried body was attached to an annular side member, and thereafter, unnecessary portions were cut off to obtain a cell-encapsulating device including the collagen Vitrigel membrane dried body.

On the other hand, in the adhesive type (adhesive type) artificial skin preparation developed by the present inventors, a collagen Vitrigel film dried body with a terminal peptide removed (atelocollagen) is placed on a wound site, a silicone-treated PET film larger than the collagen Vitrigel film dried body is then stacked, and a dressing tape (adhesive tape) is further applied and adhered from above (see, for example, patent document 5).

Disclosure of Invention

Problems to be solved by the invention

The collagen Vitrigel membrane dried body having a smooth surface without wrinkles, which is integrated with Parafilm (registered trademark) described in patent document 2, has the following problems: after the Parafilm (registered trademark) was peeled off, a component derived from the Parafilm (registered trademark) was attached to the surface of the collagen Vitrigel membrane dried body.

In addition, the collagen Vitrigel membrane dried body produced by using the ring magnet described in patent document 3 has the following problems: time and cost are required in terms of work, and dry wrinkles are generated in the collagen Vitrigel membrane dried body.

In the chamber having the collagen Vitrigel film to which the silicon-treated PET film is attached described in patent document 4, the silicon-treated PET film is attached after the chamber having the collagen Vitrigel film is manufactured. Therefore, a technique for simply producing a collagen Vitrigel membrane dried body having a smooth surface free from wrinkles, to which a silicon-treated PET film is weakly adhered, at low cost, has not been developed.

The present invention has been made in view of the above circumstances, and provides a method and an apparatus for manufacturing a Vitrigel film dried body, which can easily obtain a Vitrigel film dried body having a smooth surface without wrinkles. Also provided is a method and an apparatus for manufacturing a Vitrigel film dried body bonded device, which can be continuously manufactured after the manufacture of the Vitrigel film dried body.

Means for solving the problems

The inventors have made intensive studies to achieve the above object, and as a result, have found that: the present inventors have completed the present invention by using an apparatus comprising a member having low adsorbability to hydrogel and a member having high adsorbability to hydrogel, and by easily obtaining a Vitrigel membrane dried body having a smooth surface without wrinkles.

That is, the present invention includes the following embodiments.

A Vitrigel membrane dried body manufacturing method according to embodiment 1 of the present invention includes the following steps in order:

step 1, disposing and placing a member A having 1 or more recessed portions and a member B having 1 or more through-holes concentrically such that the recessed portions of the member A and the through-holes of the member B overlap each other,

in the member A, the bottom surface of the recess is composed of a 1 st material having a low adsorbability to the hydrogel at the center and a 2 nd material having a high adsorbability to the hydrogel at the peripheral portion,

the size of the cross section of the through hole in the member B is substantially the same as the size of the cross section of the recess of the member a,

step 2 of injecting a sol from the through-hole of the member B,

step 3 of allowing the member A and the member B into which the sol has been injected to stand to gel the sol,

step 4 of drying and vitrifying the hydrogel obtained in step 3 in a state of being formed in the member A and the member B,

step 5 of hydrating the dried hydrogel obtained in step 4 in a state of being formed in the member A and the member B,

a step 6 of drying and vitrifying again the Vitrigel obtained in the step 5 in a state of being formed in the member A and the member B, and

and 7, cutting off the Vitrigel dried body obtained in the step 6, in which the part slightly covering the top surface of the member A is cut off.

In the method for producing a Vitrigel film dried body according to embodiment 1, the 1 st material may be detachably attached to the bottom surface of the recess of the member a.

A method for manufacturing a Vitrigel film dried body-bonded device according to embodiment 2 of the present invention is a method for manufacturing a Vitrigel film dried body-bonded device using a Vitrigel film dried body obtained by the method for manufacturing a Vitrigel film dried body according to embodiment 1, which includes the following steps in order:

a step 8 of separating the member B from the member a in a state where the Vitrigel film dried body is disposed in the member a and the member B, fitting a member C (a cylindrical member having one or more recesses and an adhesive layer at a peripheral portion of a surface of the member C in contact with the Vitrigel film dried body into the recesses so as to be insertable and removable, and a cross-sectional dimension of the recesses is substantially the same as a cross-sectional dimension of the recesses of the member a) so that the recesses of the member a and the recesses of the member C are concentrically disposed, and placing the member a on the member C, and

and a step 9 of separating the member A from the member C and removing the cylindrical member to which the Vitrogel film dried body is bonded from the member A.

In the method for manufacturing a device to which a Vitrigel film dried body is bonded according to embodiment 2, the method may further include, after step 9, the following steps:

a step 10 of inserting the tubular member to which the Vitrigel film dried body obtained in the step 9 is bonded into a 2 nd member C so as to be able to be pulled out and inserted so that the surface to which the Vitrigel film dried body is bonded is in contact with the bottom surface, and forming an adhesive layer on the peripheral portion of the surface of the tubular member to which the Vitrigel film dried body is not bonded,

a step 11 of separating the 2 nd Vitrigel film dried body from the 2 nd component A in a state where the 2 nd Vitrigel film dried body obtained by the Vitrigel film dried body manufacturing method is formed in the 2 nd component A and the 2 nd component B,

disposing the 2 nd member C obtained in the step 10 concentrically such that the concave portion of the 2 nd member A overlaps the concave portion of the 2 nd member C, placing the 2 nd member A on the 2 nd member C such that the adhesive layer of the 2 nd member C on the surface to which the Vitrigel dry body is not bonded is in contact with the 2 nd Vitrigel dry body formed in the 2 nd member A, and

and a step 12 of separating the 2 nd member C from the 2 nd member A, and taking out the cylindrical member having the Vitrigel film dried body bonded on both surfaces thereof from the 2 nd member A.

A Vitrigel membrane dried body manufacturing apparatus according to embodiment 3 of the present invention includes a member a having 1 or more recessed portions, a center portion of a bottom surface of the recessed portion being made of a 1 st material having low adsorbability to hydrogel, a peripheral portion thereof being made of a 2 nd material having high adsorbability to hydrogel, and a member B having 1 or more through holes having a cross-sectional size substantially equal to that of the recessed portion of the member a, and the recessed portion and the through holes are arranged so as to overlap each other when the member a and the member B are concentrically arranged.

In the Vitrigel film dried body manufacturing apparatus according to embodiment 3, the 1 st material may be detachable from the bottom surface of the recess of the member a.

A Vitrigel film dried body-bonded device manufacturing apparatus according to embodiment 4 of the present invention includes the Vitrigel film dried body manufacturing apparatus according to embodiment 3, and a member C having 1 or more recessed portions having a cross-sectional dimension substantially equal to that of the recessed portion of the member a, the recessed portion of the member C being fitted with a tubular member, which is a main body of the Vitrigel film dried body-bonded device, so as to be insertable and removable, and the member a and the member C being concentrically arranged, the recessed portion of the member a and the recessed portion of the member C being arranged so as to overlap each other.

The manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the above embodiment may include 2 or more of the manufacturing apparatuses of the Vitrigel film dried body.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the method and apparatus for manufacturing the Vitrigel film dried body of the above embodiment, a Vitrigel film dried body having a smooth surface without wrinkles can be obtained easily. In addition, according to the method and apparatus for manufacturing the Vitrigel film dried body-bonded device according to the above embodiment, the Vitrigel film dried body-bonded device can be continuously manufactured after the manufacture of the Vitrigel film dried body, and the Vitrigel film dried body-bonded device can be easily obtained.

Drawings

Fig. 1A is a plan view showing an example of a manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment.

Fig. 1B is a front view showing an example of a manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment.

Fig. 1C is a perspective view showing an example of a manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment.

Fig. 2A is an image showing a state in which PBS is filled in a cell-enclosing device obtained by the method for manufacturing a device to which a Vitrigel membrane dry body of the present embodiment is bonded in example 1.

Fig. 2B is an image showing a state in which PBS was filled in the cell encapsulation device to which Vitrigel membrane dried bodies were adhered, which was manufactured using a ring magnet, in comparative example 1.

Fig. 3 is an image showing a state in which PBS is injected into the chamber to which the Vitrigel film dried body of the present embodiment is bonded in example 2.

Fig. 4 is an image showing a case where the Vitrigel film dried body according to the present embodiment and a PET film were detachable in production example 6.

Detailed Description

Method for producing Vitrogel film-dried body

The Vitrigel film dried body manufacturing method of the present embodiment is a method using the member a and the member B. The member a has 1 or more recesses. The bottom surface of the recess is composed of a 1 st material having a low adsorbability to the hydrogel in the center portion and a 2 nd material having a high adsorbability to the hydrogel in the peripheral portion. The member B has 1 or more through-holes having a cross-sectional dimension substantially equal to that of the recess of the member a.

The method for producing a Vitrigel membrane dried body according to the present embodiment includes the following steps 1 to 7 in this order.

In step 1, the member a is concentrically arranged and placed so that the recess and the through-hole of the member B overlap each other.

In step 2, a sol is injected from the through-hole of the member B.

In step 3, the member a and the member B into which the sol is injected are left to stand, thereby gelling the sol.

In step 4, the hydrogel obtained in step 3 is dried and vitrified in the state of being formed in the member a and the member B.

In step 5, the dried hydrogel obtained in step 4 is hydrated in a state of being formed in the member a and the member B.

In step 6, Vitrigel obtained in step 5 is dried in a state of being formed in the member a and the member B, and is vitrified again.

In step 7, the Vitrigel dried body obtained in step 6 is cut off so as to cover a small amount of the top surface of the member a.

According to the method for manufacturing a Vitrigel film dried body of the present embodiment, a Vitrigel film dried body having a smooth surface without wrinkles can be easily manufactured.

In the present specification, the term "sol" means: colloidal particles (about 1 to several hundred nm in size) of a dispersoid in which a liquid is used as a dispersion medium are particularly composed of a polymer compound. More specifically, the sol may be an aqueous solution of a natural polymer compound and/or a synthetic polymer compound. Therefore, when these polymer compounds are crosslinked by chemical bonds to obtain a mesh structure, they are converted into "hydrogels", that is, semi-solid substances in which a large amount of water is retained in the mesh. That is, the "hydrogel" refers to a substance obtained by gelling a sol.

The term "Vitrigel" refers to a gel in a stable state obtained by subjecting a conventional hydrogel to vitrification (vitritification) and then rehydrating the hydrogel, and the inventor has named "Vitrigel (Japanese: ビ ト リ ゲ ル; Chinese translation: vitreous gel) (registered trademark)". In the following description, when the term "Vitrigel" is used, the term "(registered trademark)" is omitted and used.

In the present specification, when describing in detail the process for producing a Vitrigel film dried body formed of a hydrogel, a dried body of a hydrogel which is not subjected to a rehydration step immediately after the vitrification step is simply referred to as a "dried hydrogel body". In addition, in contrast to this, a gel obtained through a rehydration process after the vitrification process is denoted as "Vitrigel", and a dried body obtained by vitrifying the Vitrigel is denoted as "Vitrigel dried body". In addition, a substance obtained by subjecting a Vitrigel dried body to an ultraviolet irradiation step is referred to as "Vitrigel material obtained by subjecting a Vitrigel dried body to an ultraviolet irradiation treatment"; the gel obtained by subjecting the Vitrigel material to a rehydration procedure is referred to as "Vitrigel material"; the dried body obtained by drying the Vitrigel material is referred to as "Vitrigel material dried body". Thus, "Vitrigel" and "Vitrigel material" are hydrates.

The respective steps of the Vitrigel film dried body manufacturing method according to the present embodiment will be described in detail below.

< working procedure 1 >

First, the member B is placed on the member a. At this time, the recess of the member a and the through-hole of the member B are concentrically arranged so as to overlap each other. By overlapping and communicating the recessed portion of the member a with the through-hole of the member B, the sol can be injected into the recessed portion of the member a through the through-hole of the member B in the next step 2.

Next, the structure and material of each member are as follows.

[ Member A ]

(shape)

The member a has 1 or more recesses. In the recess, a Vitrigel film dried body was manufactured.

Regarding the concave portion of the member a, the bottom surface is smooth, and the side surface and the bottom surface are perpendicular to each other, from the viewpoint that a Vitrigel film dried body having a smooth surface can be obtained.

The cross-sectional area of the recess is not particularly limited, and may be set to a dimension such as Vitrigel film dried body having a desired dimension. Regarding the area of the cross section of the recess, specifically, it may be, for example, 4mm²Above and 400cm²Hereinafter, it may be, for example, 20mm²The aboveAnd 40cm²Hereinafter, it may be, for example, 80mm²Above and 4cm²The following.

The number of the concave portions is, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 20, and the like, but is not limited thereto. Among them, the number of the concave portions is preferably an even number, more preferably 2, 4, 6 or 8, and further preferably 4, 6 or 8.

When the member a has 2 or more recesses, the recesses are preferably arranged at equal intervals on the member a.

In the member a, the depth of the recess may be appropriately adjusted so that the thickness of the Vitrigel film dried body becomes a desired thickness, and is preferably 1 μm or more and 5mm or less, more preferably 5 μm or more and 3mm or less, further preferably 10 μm or more and 2mm or less, and particularly preferably 100 μm or more and 1mm or less. By setting the depth of the recess to the above range, for example, when the Vitrigel membrane dried body obtained by the production method of the present embodiment is used in a cell encapsulation device, the strength can be set such that cells can be injected into the device and cultured.

In the member a, the cross-sectional shape of the concave portion may be appropriately adjusted so that the Vitrigel film dried body has a desired shape, and examples thereof include a polygonal shape such as a triangle, a quadrangle (including a square, a rectangle, and a trapezoid), a pentagon, a hexagon, a heptagon, and an octagon; circular, elliptical, substantially elliptical, semicircular, fan-shaped, and the like, but is not limited thereto. Wherein the cross-sectional shape of the recess is preferably circular.

In addition, in the member a, in the case where the cross section of the recess is circular, the diameter thereof may be appropriately adjusted so that the diameter of the Vitrigel film dried body is a desired diameter, and may be, for example, 2mm or more and 226mm or less, may be, for example, 5mm or more and 72mm or less, and may be, for example, 10mm or more and 23mm or less.

(Material)

The material constituting the member A is composed of a 1 st material having a low adsorbability to hydrogel in the center portion and a 2 nd material having a high adsorbability to hydrogel in the peripheral portion of the bottom surface of the recess. In addition, all portions except the central portion of the bottom surface of the recess may be made of the 2 nd material.

Here, "the center portion of the bottom surface of the recessed portion" means a position up to, for example, 9/10, preferably 4/5, more preferably 3/4, further preferably 2/3, and particularly preferably 1/2, out of the distances from the center of the bottom surface to the shortest edge portion. The term "peripheral portion of the bottom surface of the recess" means a portion surrounding the central portion of the bottom surface of the recess.

In the present specification, "a material having low adsorbability to a hydrogel" means: a material that the hydrogel does not adsorb at all or a material that adsorbs with a weak force to the extent that it can be detached.

In the present specification, the term "material having high adsorbability to hydrogel" means: a material to which the hydrogel completely adsorbs or a material to which the hydrogel strongly adsorbs to the extent that the hydrogel cannot be attached and detached.

Specifically, it can be defined as shown below.

First, when the hydrogel is brought into contact with the 1 st material or the 2 nd material and the hydrogel on the surface of the 1 st material or the 2 nd material is observed from the horizontal direction, if the intersection of the contour curve of the hydrogel and the surface of the 1 st material or the 2 nd material is defined as an "end point", the contact angle θ is measured at the end point. At this time, at the end points, the surface tension of the 1 st material or the 2 nd material (surface tension between gas/1 st material or 2 nd material) γ S1 or γ S2, the surface tension between hydrogel/1 st material or 2 nd material γ LS1 or γ LS2, and the surface tension of hydrogel (surface tension between gas/hydrogel) γ L function. When the wet state is stable, the end points are not moved right and left but are stationary, and thus 3 forces of "γ S1, γ LS1, and γ L", or "γ S2, γ LS2, and γ L" are balanced. The balance of these 3 forces is expressed by the following formula (Young's equation) shown in [1] or [2 ].

γS1＝γLcosθ+γLS1 [1]

γS2＝γLcosθ+γLS2 [2]

The wettability, i.e., the size of the contact angle, is determined by the surface properties of the hydrogel and the 1 st material or the 2 nd material, respectively. Therefore, it can be considered to use a formula represented by the following formula [3] obtained by modifying the above formula [1] or a formula represented by the following formula [4] obtained by modifying the above formula [2 ].

cosθ＝(γS1-γLS1)/γL···[3]

cosθ＝(γS2-γLS2)/γL···[4]

The cos θ becomes smaller and close to 0 indicates: the contact angle theta is close to 180 deg., the wetting becomes poor, i.e., the adsorptivity to the hydrogel becomes low. Accordingly, as a method for reducing the adsorbability to a hydrogel, there can be cited either (1) increasing the surface tension γ L of the hydrogel or (2) decreasing the surface tension γ S1 of the 1 st material.

On the other hand, cos θ becoming larger and closer to 1 indicates: the contact angle θ is close to 0 °, and the wettability becomes good, that is, the adsorbability to the hydrogel becomes high. Accordingly, as a method for improving the adsorbability to the hydrogel, there can be cited either (1) a method of reducing the surface tension γ L of the hydrogel or (2) a method of increasing the surface tension γ S2 of the 2 nd material.

With respect to the surface tension of the hydrogel, the variable area is limited in order to obtain a constant strength of the film. Therefore, in the case of reducing the adsorbability to hydrogel, "(2) a method of reducing the surface tension γ S1" of the 1 st material is preferable. On the other hand, in the case of improving the adsorbability to hydrogel, "(2) a method of increasing the surface tension γ S2" of the 2 nd material is preferable.

As described above, a material having low adsorbability to a hydrogel means a material having a surface tension lower than that of the hydrogel. More specifically, the surface tension of the material 1 may be, for example, 1dynes/cm or less, preferably 5dynes/cm or more, more preferably 10dynes/cm or more, still more preferably 20dynes/cm or more, and particularly preferably 30dynes/cm or more smaller than the surface tension of the hydrogel.

By making the surface tension of the material 1 smaller than the surface tension of the hydrogel by the lower limit value or more, the Vitrigel film dried body to be manufactured can be easily peeled from the material 1.

The material having high adsorbability to the hydrogel is a material having a surface tension higher than that of the hydrogel. More specifically, the surface tension of the material 2 is, for example, 1dynes/cm or more, preferably 3dynes/cm or more, more preferably 5dynes/cm or more, still more preferably 7dynes/cm or more, and particularly preferably 10dynes/cm or more larger than the surface tension of the hydrogel.

By making the surface tension of the 2 nd material larger than the surface tension of the hydrogel by the above lower limit or more, the Vitrigel film dried body to be produced can be suppressed from being unexpectedly peeled off or moved after the following step 7.

In addition, when the hydrogel is a gel containing a protein such as collagen, a material having low adsorbability to the hydrogel may be a material having a large number of hydrophilic groups on the surface, and a material having high adsorbability to the hydrogel may be a material having a large number of hydrophobic groups on the surface. The number of the hydrophilic groups and the hydrophobic groups on the surface can be appropriately adjusted depending on the type of the protein-containing hydrogel used.

Examples of the hydrophilic group include Phosphorylcholine groups (Phosphorylcholine groups) and alkylene glycol groups.

Examples of the hydrophobic group include linear, branched, and cyclic alkyl groups. The number of carbon atoms of the alkyl group is, for example, 1 to 20, for example, 4 to 20.

Specific examples of the material 1 include, but are not limited to, stainless steel and poly (vinyl chloride).

The 1 st material may be a thin film in which a release agent such as silicon is laminated, for example. The Vitrigel film dried body is produced so as to be in contact with the surface of the thin film on which the release agent layer is laminated, whereby the Vitrigel film dried body can be easily released. The material of the film is not particularly limited, and examples thereof include polyethylene, polyethylene terephthalate, polystyrene, and polypropylene.

The material 1 may be an oil coating film formed by applying oil such as silicon to the bottom surface of the member a.

Specific examples of the material 2 include, but are not limited to, glass materials, polyacrylates (acrylic resins), polystyrene, and nylon.

More specifically, the glass material includes soda lime glass, Pyrex (registered trademark) glass, Vycor (registered trademark) glass, quartz glass, and the like.

More specifically, the polyacrylate (acrylic resin) includes, for example, poly (methyl methacrylate), poly (ethyl methacrylate), poly (butyl methacrylate), poly (isobutyl methacrylate), poly (hexyl methacrylate), poly (isodecyl methacrylate), poly (lauryl methacrylate), poly (phenyl methacrylate), poly (methyl acrylate), poly (isopropyl acrylate), poly (isobutyl acrylate), poly (octadecyl acrylate), and the like.

In addition, all portions except the center portion of the bottom surface of the recess portion may be made of the 2 nd material exemplified above.

The 1 st material may be detachably placed on the bottom surface of the recess of the member a. In this case, the 1 st material is preferably bonded to the material of the bottom surface of the recess of the component a with a weak force to the extent that the material can be easily detached by physical peeling. Specifically, for example, as shown in the production example described later, the 1 st material may be bonded to the material of the bottom surface of the recess of the component a via a salt such as PBS with a weak force of such a degree that the material can be easily attached and detached by physical peeling with tweezers or the like. Alternatively, the 1 st material may be bonded to the material of the bottom surface of the recess of the component a via a release agent layer containing a release agent such as silicon, with a weak force of such a degree that the material can be easily detached by physical peeling with tweezers or the like.

In this case, the material of the bottom surface of the recessed portion of the component A existing under the material 1 may be the same as the material 2.

[ Member B ]

(shape)

The member B has 1 or more through-holes. The size of this through hole is approximately the same as the cross section of the recess of the member a. Specifically, the cross-sectional area of the through-hole is preferably 1 to 1.5 times, more preferably 1 to 1.3 times, still more preferably 1 to 1.25 times, and particularly preferably 1.21 times the cross-sectional area of the recess of the member a.

The number of through-holes is preferably the same as the number of recesses of the member a, and examples thereof include, but are not limited to, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, and 20. Among them, the number of the penetrating holes is preferably an even number, more preferably 2, 4, 6 or 8, and further preferably 4, 6 or 8.

When the member B has 2 or more through-holes, the through-holes are preferably arranged at equal intervals on the member B.

In the case where the member B has 2 or more through-holes, the through-holes are arranged at the same intervals as the recesses in the member a in the member B.

When the member a and the member B are concentrically arranged, the through-hole of the member B is arranged so as to overlap the recess of the member a.

In the member B, the height of the through-hole is not particularly limited, and may be, for example, 1 μm or more and 100mm or less, 1 μm or more and 50mm or less, 5 μm or more and 10mm or less, and 10 μm or more and 5mm or less.

In the member B, the cross section of the through-hole may be the same as the cross section of the recess of the member a, and examples thereof include a polygon such as a triangle, a quadrangle (including a square, a rectangle, and a trapezoid), a pentagon, a hexagon, a heptagon, and an octagon; circular, elliptical, substantially elliptical, semicircular, fan-shaped, and the like, but is not limited thereto. The cross-section of the through-hole is preferably circular.

In the member B, when the cross section of the through-hole is circular, the diameter thereof may be substantially the same as the diameter of the recess of the member a, and may be, for example, 2mm or more and 226mm or less, 5mm or more and 72mm or less, and 10mm or more and 23mm or less.

(Material)

The material of the member B is not particularly limited, but is preferably the same as the 2 nd material constituting the member a in view of ease of handling. As the material of the member B, the same materials as those exemplified as the 2 nd material of the member a can be cited.

< step 2 >

Subsequently, the sol is injected into the recess of the member a from the through-hole of the member B.

The sol includes, for example, a gelled extracellular matrix-derived component, a natural polymer compound such as fibrin (fibrin), agar, agarose, or cellulose, and a synthetic polymer compound such as polyacrylamide (polyacrylamide), polyvinyl alcohol, polyethylene oxide, poly (2-hydroxyethyl methacrylate)/polycaprolactone (poly (II-hydroxymethacrylate)/polycaprolactone).

Examples of the above-mentioned gelled extracellular matrix-derived component include, but are not limited to, collagen (type I, type II, type III, type V, type XI, and the like), a basement membrane component (product name: Matrigel) reconstituted from a mouse EHS tumor extract (including collagen type IV, laminin (laminin), heparan sulfate proteoglycan (heparin), and the like), glycosaminoglycan (glycosaminoglycan), hyaluronic acid (hyaluronic acid), proteoglycan (proteoglycan), gelatin, and the like. The ingredients such as salt, their concentration, pH, etc. can be selected as optimum for each gelation, and a desired Vitrigel film dried body can be produced. Further, Vitrigel membrane-dried bodies imitating various in vivo tissues can be obtained by combining the raw materials.

Among these, the sol is preferably a gelled extracellular matrix-derived component, and more preferably collagen. Further, as a more preferable raw material of collagen, natural collagen (native collagen) or atelocollagen can be exemplified.

When the sol is a collagen sol, as a substance having an optimum Salt concentration, for example, a collagen sol prepared by using physiological Saline, PBS (Phosphate Buffered Saline), HBSS (Hank's Balanced Salt Solution), basal medium, serum-free medium, serum-containing medium, or the like can be used. The pH of the solution at the time of gelation of collagen may be, for example, 6 to 8.

Particularly in the case of using a serum-free culture solution, inclusion of substances (e.g., antigens, pathogenic factors, etc.) contained in other animal serum components, which are not suitable for transplantation, in Vitrigel membrane dried bodies can be avoided. Therefore, Vitrigel membrane dried bodies obtained using a serum-free culture solution can be preferably used for a medical cell transplantation device.

The concentration of the collagen sol used for producing the Vitrigel membrane dried product is preferably 0.1% or more and 1.0% or less, and more preferably 0.2% or more and 0.6% or less. By setting the concentration of the collagen sol to the lower limit or more, gelation is not excessively weak, and by setting the concentration of the collagen sol to the upper limit or less, a Vitrigel film dried body formed of a uniform collagen gel can be obtained.

The preparation of the collagen sol may be carried out at about 4 ℃.

< step 3 >

Next, the member a and the member B into which the sol was injected were left to stand to gel the sol.

The temperature at which the sol is kept warm can be appropriately adjusted depending on the kind of the sol used. For example, when the sol is a collagen sol, the temperature for keeping warm at the time of gelation may be set to a temperature lower than the collagen modification temperature depending on the animal species of the collagen to be used, and gelation may be generally performed for several minutes to several hours by keeping warm at a temperature of 20 ℃ or higher and 37 ℃ or lower.

< step 4 >

Subsequently, the hydrogel obtained was dried in a state of being formed in the members a and B, and vitrified.

By drying the hydrogel, free water in the hydrogel can be completely removed, and partial removal of bound water can be further performed.

The longer the vitrification process (process of completely removing free water in the hydrogel and then partially removing bound water) is, the more the Vitrigel having excellent transparency and strength can be obtained when rehydration is performed. If necessary, Vitrigel obtained by a short-term vitrification and then rehydrating may be washed with PBS or the like and vitrified again.

As the drying method, for example, various methods such as air drying, drying in a closed container (air in the container is circulated and dry air is always supplied), and drying in an environment where silica gel is left in the container can be used. For example, as a method for air-drying, a method of drying for 2 days in an incubator (incubator) maintained at 10 ℃ and 40% humidity or a method of drying for one day and night at room temperature in a clean bench in an aseptic state can be exemplified.

< step 5 >

Subsequently, the obtained dried hydrogel is hydrated in a state of being formed in the member a and the member B. At this time, the hydration may be performed using physiological saline, pbs (phosphate Buffered saline), or the like.

< step 6 >

Subsequently, the Vitrigel thus obtained was dried in a state of being formed in the member a and the member B, and vitrified again.

The drying method may be the same as the method exemplified in the step 4.

< step 7 >

Next, the Vitrigel dried body thus obtained is cut off at a portion slightly covering the top surface of the member a by using, for example, a cylindrical doctor blade (thin blade). At this time, a cylindrical spatula was cut along the inner surface of the member B to cut the Vitrigel dried body slightly covering the top surface of the member a. Thus, Vitrigel dried bodies having a cross section of a substantially uniform size can be formed.

The cross section of the cylindrical doctor blade is slightly larger than the cross section of the concave portion of the member a and has a smaller size than the cross section of the through hole of the member B. Specifically, the area of the cross section of the cylindrical doctor blade is preferably 1 time or more and 1.15 times or less, more preferably 1 time or more and 1.1 times or less, further preferably 1 time or more and 1.07 times or less, and particularly preferably 1 time or more and 1.05 times or less, with respect to the area of the cross section of the recessed portion of the member a.

The height of the cylindrical doctor blade is not particularly limited, and may be a height that can be inserted into the member a and the member B and can cut off the produced Vitrigel film dried body.

The cross-sectional shape of the cylindrical doctor blade may be the same as the cross-sectional shape of the recessed portion of the member a, and examples thereof include a polygonal shape such as a triangle, a quadrangle (including a square, a rectangle, and a trapezoid), a pentagon, a hexagon, a heptagon, and an octagon; circular, elliptical, substantially elliptical, semicircular, fan-shaped, and the like, but is not limited thereto. The cross-section of the through-hole is preferably circular.

In addition, in the case where the cross section of the cylindrical doctor blade is circular, the diameter of the cylindrical doctor blade may be substantially the same as the diameter of the concave portion of the member a, and may be, for example, 2mm or more and 226mm or less, 5mm or more and 72mm or less, or 10mm or more and 23mm or less.

For example, when 2 or more Vitrigel film dried bodies are simultaneously produced, 2 or more Vitrigel film dried bodies produced in the recessed portions of the member a may be cut at a time by using the member D having the cylindrical doctor blades in the number corresponding to the number of the recessed portions of the member a, and when the member a, the member B, and the member D are concentrically arranged, the cylindrical doctor blades may be arranged so that the recessed portions of the member a and the cylindrical doctor blades overlap each other through the through-holes of the member B.

< other Process >

In addition, the Vitrigel dried body thus obtained may be irradiated with ultraviolet light in a state of being formed in the member a and the member B after the step 6 and before the step 7, or in a state of being taken out from the member a and the member B after the step 7, and the Vitrigel material may be obtained by subjecting the Vitrigel dried body to ultraviolet light irradiation treatment.

For the irradiation of ultraviolet rays, a known ultraviolet irradiation device can be used.

Regarding the irradiation energy of ultraviolet rays to the Vitrogel dried body, the total irradiation amount per unit area is preferably 0.1mJ/cm²Above and 6000mJ/cm²Hereinafter, more preferably 10mJ/cm²Above 4000mJ/cm²Hereinafter, more preferably 100mJ/cm²Above 3000mJ/cm²The following. By setting the total irradiation amount to the above range, the transparency and strength of the Vitrigel material obtained by further using the rehydration process can be particularly preferable.

Further, the irradiation of Vitrigel dried body with ultraviolet rays may be repeated several times. In the case where the irradiation of ultraviolet rays to the Vitrigel dried body is repeated, it is preferable that: after the irradiation of ultraviolet rays for the 1 st time, the process of rehydrating and vitrifying the Vitrigel material in which the Vitrigel dried body was subjected to the ultraviolet irradiation treatment was performed, and thereafter, the irradiation of ultraviolet rays to the Vitrigel material dried body after the Vitrigel material was re-vitrified was performed for the 2 nd time or later.

The total amount of uv irradiation per unit area is the same, and the irradiation of the Vitrigel dry body with uv light may be divided into a plurality of repetitions to further improve the transparency and strength of the Vitrigel material obtained by further rehydration. The more the number of divisions is, the more preferable. For example, the total irradiation amount per unit area of the irradiation of ultraviolet rays to the Vitrogel dried body is 1000mJ/cm²Above 4000mJ/cm²In the following range, the number of irradiation within the range is preferably 2 or more and 10 or less, more preferably 2 or more and 6 or less.

In addition, when the irradiation of the Vitrigel dry body with the ultraviolet ray is repeated, the irradiation site of the ultraviolet ray may be divided into one surface and the other surface (upper surface and lower surface) of the Vitrigel dry body and the total irradiation amount may be set to the total irradiation amount of the ultraviolet ray per unit area of the Vitrigel dry body.

It is considered that the strength and transparency of the Vitrigel material obtained by further rehydrating the Vitrigel dried body become high by ultraviolet irradiation because: the high molecular compounds in the Vitrigel material are crosslinked with each other by ultraviolet rays. That is, it is considered that Vitrigel material can maintain high transparency and strength by this operation.

Further, Vitrigel material obtained by subjecting the Vitrigel dried body obtained to ultraviolet irradiation treatment may be hydrated to obtain Vitrigel material. At this time, it may be hydrated using physiological saline, PBS (phosphate Buffered saline), or the like.

Further, the Vitrigel material obtained may be dried and then vitrified to obtain a dried Vitrigel material.

The drying method may be the same as the method exemplified in the step 4.

The Vitrigel membrane dried body obtained by the method for producing a Vitrigel membrane dried body according to the present embodiment can be used, for example, in a chamber provided with a Vitrigel membrane dried body, a cell-encapsulating device, or a patch-type artificial skin preparation using a thin film provided with the Vitrigel membrane dried body.

Method for manufacturing apparatus to which Virgigel film dried body is bonded

Embodiment 1

The method for manufacturing the apparatus to which the Vitrigel film dried body is bonded according to the present embodiment is: the Vitrigel film dried body obtained by the method for producing a Vitrigel film dried body according to the above embodiment, and a method of manufacturing an apparatus to which the Vitrigel film dried body is bonded are used.

In the method for manufacturing the device to which the Vitrigel film dried body is bonded according to the present embodiment, the member C is used in addition to the members a and B. The member C has 1 or more concave portions. A cylindrical member having an adhesive layer on the peripheral portion of the surface on the side contacting the Vitrigel film dried body was fitted into the concave portion of the member C so as to be able to be inserted and removed. In addition, the cross section of the recess of the member C is substantially the same size as the cross section of the recess of the member a.

The method for manufacturing the device to which the Vitrigel film dried body is bonded according to the present embodiment includes the following steps 8 and 9 in this order.

In step 8, the Vitrigel film dried body is placed in the member a and the member B, the member B is separated from the member a, the member C is then concentrically placed so that the concave portion of the member a and the concave portion of the member C overlap, and the member a is placed on the member C.

In step 9, the member a and the member C are separated, and the cylindrical member to which the Vitrigel film dried body is bonded is pulled out from the member a.

According to the method of manufacturing the Vitrigel film dried body-bonded device of the present embodiment, the Vitrigel film dried body-bonded device can be continuously manufactured by the above-described method of manufacturing Vitrigel film dried bodies.

The device to which the Vitrigel membrane dry body is bonded, which is manufactured by the manufacturing method of the present embodiment, includes, for example, a chamber provided with the Vitrigel membrane dry body, a cell-enclosing device, and the like, but is not limited thereto.

Hereinafter, each step of the method for manufacturing a device to which a Vitrigel film dried body is bonded according to the present embodiment will be described in detail.

< step 8 >

First, the Vitrigel film dried bodies obtained through the above steps 1 to 7 are placed in the members a and B, and the member B is separated from the member a. Next, a component C is placed on the component A. At this time, the recessed portions of the members a and C are concentrically arranged so as to overlap each other. By overlapping the concave portions of the member a and the concave portions of the member C, the Vitrigel film dried body can be bonded to the cylindrical member via the adhesive layer without being deviated.

The time and environment for bonding the Vitrigel film dried body and the cylindrical member are appropriately selected depending on the composition of the adhesive layer.

Next, the structure and material of the member C and the cylindrical member are as follows.

[ Member C ]

(shape)

The member C has 1 or more concave portions. The cylindrical member is fitted into the recess of the member C so as to be able to be inserted and removed.

The recessed portion of the member C may be formed in a shape that can be inserted into and removed from a cylindrical member described later. Specifically, the bottom surface of the recess of the member C may or may not be smooth. In the recess of the member C, the side surface and the bottom surface may or may not be perpendicular to each other.

The cross-section of the recess of member C is approximately the same size as the cross-section of the recess of member a. Specifically, the area of the cross section of the recess is preferably 1.0 times or less, more preferably 0.9 times or less, further preferably 0.8 times or less, and particularly preferably 0.75 times as large as the area of the cross section of the recess of the member a.

The number of the recesses of the member C is preferably the same as the number of the recesses of the member a, and examples thereof include, but are not limited to, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, and 20. Among them, the number of the recesses of the member C is preferably an even number, more preferably 2, 4, 6 or 8, and further preferably 4, 6 or 8.

When the member C has 2 or more recesses, the recesses are preferably arranged at equal intervals on the member C.

In the case where the member C has 2 or more recesses, the recesses are arranged at the same intervals as those of the recesses of the member a.

When the member a and the member C are concentrically arranged, the recess of the member C and the recess of the member a are arranged so as to overlap each other.

In the member C, the height of the recessed portion is not particularly limited, and may be appropriately adjusted according to the height of the inserted cylindrical member.

In the member C, the cross section of the recess may be the same as that of the recess of the member a, and examples thereof include a polygon such as a triangle, a quadrangle (including a square, a rectangle, and a trapezoid), a pentagon, a hexagon, a heptagon, and an octagon; circular, elliptical, substantially elliptical, semicircular, fan-shaped, and the like, but is not limited thereto. The cross-sectional shape of the recess of the member C is preferably circular.

In the case where the cross section of the recess is circular, the diameter of the member C may be substantially the same as the diameter of the recess of the member a, and may be, for example, 2mm or more and 226mm or less, 5mm or more and 72mm or less, or 10mm or more and 23mm or less.

(Material)

The material of the member C is not particularly limited, but is preferably the same as the 2 nd material constituting the member a in view of ease of handling. As the material of the member C, the same materials as those exemplified as the 2 nd material of the member a can be cited.

[ cylindrical Member ]

(shape)

The shape of the cylindrical member can be appropriately selected according to the use of the obtained device. Examples of the shape include a cylinder, a cone, a truncated cone (circular truncated cone), a pyramid, a truncated pyramid, a sphere, a polyhedron (for example, a tetrahedron, a pentahedron, a hexahedron (including a cube), an octahedron, a dodecahedron, an icosahedron, a icosahedron, and a Kepler-poinstate (Kepler-poinst) solid), and the like, but the shape is not limited thereto.

The cross-section of the cylindrical member may be smaller than the cross-section of the recess of member a. Specifically, the area of the cross section of the cylindrical member is preferably 0.5 times or more, more preferably 0.6 times or more, further preferably 0.7 times or more, and particularly preferably 0.75 times as large as the area of the cross section of the recess of the member a.

The outer diameter of the cylindrical member may be smaller than the diameter of the recess of member a. Specifically, the outer diameter of the cylindrical member is preferably 0.7 times or more, more preferably 0.8 times or more, further preferably 0.85 times or more, and particularly preferably 0.87 times the diameter of the recess of the member a.

The height of the cylindrical member can be appropriately selected according to the use of the obtained device.

For example, in the case of manufacturing a cell-enclosing device, the height of the cylindrical member is 5 μm or more, preferably 50 μm or more and 15mm or less, more preferably 100 μm or more and 10mm or less, and further preferably 500 μm or more and 2mm or less.

(Material)

As for the material of the cylindrical member, a material having liquid-tightness may be used. The material of the tubular member may be either a material having air permeability or a material having no air permeability.

In the case where the material of the cylindrical member is a material having air permeability, the oxygen permeability coefficient may be, for example, 100cm³/m²24hr atm or more and 5000cm³/m²24 hr. atm or less, and may be, for example, 1000cm³/m²24hr atm or more and 3000cm³/m²24hr atm or less, for example 1200cm³/m²24hr atm or more and 2500cm³/m²24 hr. atm or less. Further, the carbon dioxide transmission coefficient may be, for example, 1000cm³/m²24 hr. atm or more and 20000cm³/m²24hr atm or less, and may be, for example, 3000cm³/m²24hr atm or more and 15000cm³/m²24 hr. atm or less, and may be, for example, 5000cm³/m²24hr atm or more and 10000cm³/m²24 hr. atm or less.

In addition, in the case where the material of the cylindrical member is a material having no air permeability, the oxygen permeability coefficient may be, for example, 100cm³/m²24 hr. atm or less, and may be, for example, 50cm³/m²24 hr. atm or less. Further, the carbon dioxide transmission coefficient may be, for example, 1000cm³/m²24hr atm or less, which may be, for example, 500cm³/m²·24hr·atm is less than or equal to m.

In addition, as for the material of the cylindrical member, for example, in the case of manufacturing an apparatus for processing cells, a material suitable for culturing cells may be used. Specific examples of materials suitable for culturing cells include, but are not limited to, glass materials, elastomer materials, and plastics containing dendrimers or copolymers. Examples of the glass material include soda lime glass, Pyrex (registered trademark) glass, Vycor (registered trademark) glass, and quartz glass. Examples of the elastomer material include urethane rubber, nitrile rubber (nitrile rubber), silicone rubber, silicone resin (e.g., polydimethylsiloxane), fluorine rubber, acrylic rubber, isoprene rubber, ethylene propylene rubber, chlorosulfonated polyethylene rubber, epichlorohydrin rubber, chloroprene rubber, styrene-butadiene rubber, and polyisobutylene rubber. Examples of the dendrimer include poly (vinyl chloride), poly (vinyl alcohol), poly (methyl methacrylate), poly (vinyl acetate-co-maleic anhydride), poly (dimethylsiloxane) monomethacrylate, cyclic olefin polymers, fluorocarbon polymers, polystyrene, polypropylene, and polyethyleneimine (polyethyleneimine). Examples of the copolymer include poly (vinyl acetate-co-maleic anhydride), poly (styrene-co-maleic anhydride), poly (ethylene-co-acrylic acid), and derivatives thereof.

The cylindrical member has an adhesive layer on the surface to be bonded to the Vitrigel film dried body. As the adhesive constituting the adhesive layer, an adhesive having no cytotoxicity may be used, and may be a synthetic compound adhesive or a natural compound adhesive. Examples of the synthetic compound adhesive include a urethane adhesive, a cyanoacrylate adhesive, polymethyl methacrylate (PMMA), a calcium phosphate adhesive, and resin cement. Examples of the natural compound adhesive include fibrin paste and gelatin paste.

The adhesive layer may be formed of a double-sided tape. As the double-sided tape, a double-sided tape having no cytotoxicity can be used, and a double-sided tape used for medical use or the like is preferably used. Specific examples thereof include: the adhesive layer has a structure in which adhesive layers are laminated on both surfaces of a support, and is formed of a known adhesive of rubber, acrylic, urethane, silicon, or vinyl ether. More specifically, examples thereof include double-sided adhesive tapes for skin application (product numbers: 1510, 1504XL, 1524, etc.) manufactured by 3 MJAAN, double-sided adhesive tapes for skin application (product numbers: ST502, ST534, etc.) manufactured by Nitto electric company, double-sided adhesive tapes for Medical use (product numbers: 1088, #1022, #1010, #809SP, #414125, #1010R, #1088R, #8810R, #2110R, etc.) manufactured by Nichiban Medical Corp, double-sided adhesive tapes for thin foam base (product numbers: 84010, #84015, #84020, etc.) manufactured by DIC company, and the like.

< step 9 >

Next, the cylindrical member to which the Vitrigel film dried body was bonded was pulled out from the member a by separating the member a from the member C, thereby obtaining an apparatus to which the Vitrigel film dried body was bonded.

Embodiment 2

The method for manufacturing a device to which a Vitrigel film dried body is bonded according to the present embodiment may further include the following steps 10 to 12 in this order after step 9.

In step 10, the cylindrical member to which the Vitrigel film dried body obtained in step 9 is bonded is fitted into the 2 nd member C so as to be able to be inserted and removed so that the surface to which the Vitrigel film dried body is bonded is in contact with the bottom surface. Next, an adhesive layer was formed on the peripheral portion of the surface of the cylindrical member to which the Vitrigel film dried body was not bonded.

In step 11, first, a 2 nd Vitrigel membrane dried body is obtained by the method for producing a Vitrigel membrane dried body according to the above embodiment. Next, in a state where the obtained 2 nd Vitrigel film dried body is formed in the 2 nd member a and the 2 nd member B, the 2 nd member B is separated from the 2 nd member a. Next, the 2 nd member C obtained in step 10 is concentrically arranged so that the recess of the 2 nd member a and the recess of the 2 nd member C overlap each other. Next, the 2 nd component a is placed on the 2 nd component C so that the adhesive layer of the surface of the 2 nd component C to which the Vitrigel dry body is not bonded comes into contact with the 2 nd Vitrigel dry body formed in the 2 nd component a.

In step 12, the 2 nd member C and the 2 nd member a are separated, and the cylindrical member having the Vitrigel film dried bodies bonded to both surfaces thereof is pulled out from the 2 nd member a.

The steps up to step 8 are the same as those in embodiment 1. The following steps 10 to 12 will be described in detail as follows.

< step 10 >

The apparatus obtained in step 9, in which the Vitrigel film dried body is bonded to the cylindrical member, was fitted into the 2 nd member C so as to be able to be inserted and removed so that the surface to which the Vitrigel film dried body is bonded was in contact with the bottom surface. The 2 nd member C is the same member as the member C described above.

Next, an adhesive layer was formed on the peripheral portion of the surface of the cylindrical member to which the Vitrigel film dried body was not bonded.

Examples of the method for forming the adhesive layer include a method of applying an adhesive, a method of attaching a double-sided tape, and the like, but are not limited thereto. The adhesive and the double-sided tape are similar to those exemplified in the above step 8.

< step 11 >

Next, a 2 nd Vitrigel film dried body was produced on the 2 nd member a by using the Vitrigel film dried body production method according to the above embodiment. Next, in a state where the obtained 2 nd Vitrigel film dried body is formed in the 2 nd member a and the 2 nd member B, the 2 nd member B is separated from the 2 nd member a. The 2 nd members a and 2 nd members B are the same as the members a and B.

Next, the 2 nd component A is placed on the 2 nd component C. At this time, the 2 nd member C is fitted in the cylindrical member so as to be able to be inserted and removed. The cylindrical member has an adhesive layer in the peripheral portion of the surface to which the Vitrigel film dried body is not bonded. Further, a Vitrigel film dried body is provided on the surface of the cylindrical member opposite to the surface having the adhesive layer. The recess of the 2 nd member a and the recess of the 2 nd member C are concentrically arranged so as to overlap each other. Since the recessed portion of the 2 nd member C overlaps the recessed portion of the 2 nd member a, the Vitrigel film dried body can be bonded to the cylindrical member via the adhesive layer without being deviated. The time and environment for bonding the Vitrigel film dried body and the cylindrical member are appropriately selected depending on the composition of the adhesive layer.

< step 12 >

Next, the 2 nd member C was separated from the 2 nd member a, and the cylindrical member having the Vitrigel film dried bodies bonded to both surfaces thereof was pulled out from the 2 nd member a, whereby a device having the Vitrigel film dried bodies bonded to both surfaces thereof was obtained.

Vitrogel film dried body manufacturing apparatus

The Vitrigel film dried body manufacturing apparatus of the present embodiment includes a member a and a member B.

The member a has 1 or more recesses. The bottom surface of the recess is composed of a 1 st material having a low adsorbability to the hydrogel in the center portion and a 2 nd material having a high adsorbability to the hydrogel in the peripheral portion.

The member B has 1 or more through-holes. The cross section of this through hole is approximately the same size as the cross section of the recess of the member a.

When the member a and the member B are concentrically arranged, the recess and the through-hole are arranged so as to overlap each other.

According to the Vitrigel film dried body manufacturing apparatus of the present embodiment, a Vitrigel film dried body having a smooth surface without wrinkles can be easily manufactured.

Fig. 1A is a plan view showing an example of a manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment. Fig. 1B is a front view showing an example of a manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment. Fig. 1C is a perspective view showing an example of a manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment.

In fig. 1A to 1C, the Vitrigel film dried body manufacturing apparatus (10) includes a member a (1) and a member B (2).

The member A (1) has 1 or more recessed portions (1 c). Further, the center of the bottom surface of the recess (1c) is formed of a 1 st material (1a) having low adsorption to the hydrogel. Further, the bottom surface and the peripheral portion of the recess (1c) are formed of a 2 nd material (1b) having high adsorbability to hydrogel.

The shape of the recess in the member a, and the details of the 1 st material and the 2 nd material, etc. are as described in the method for producing the Vitrigel film dried body.

The 1 st material (1a) may be detachably attached to the bottom surface of the recess (1 c). In this case, the 1 st material (1a) is preferably bonded to the material of the bottom surface of the recess (1c) of the component member a (1) with a weak force to such an extent that the material can be easily detached by physical peeling. Specifically, for example, as shown in the production example described later, the 1 st material (1a) can be bonded to the material of the bottom surface of the recess (1c) of the component a (1) via a salt such as PBS with a weak force of such a degree that the material can be easily attached and detached by physical peeling with tweezers or the like. Alternatively, the 1 st material (1a) may be bonded to the material constituting the bottom surface of the recess (1c) of the member a (1) via a release agent layer containing a release agent such as silicon, with a weak force of such a degree that the material can be easily detached by physical peeling with tweezers or the like.

In this case, the bottom surface of the recess (1c) of the component member a (1) existing below the 1 st material (1a) may be made of the same material as the 2 nd material.

The member A (1) may also have a positioning pin (4), and the positioning pin (4) is used for concentrically arranging the member A (1) and the member B (2) in a manner that the recess (1c) of the member A (1) and the through hole (2a) of the member B (2) are overlapped. The positioning pin (4) is provided, so that the member A (1) and the member B (2) can be arranged concentrically so that the recess (1c) and the through hole (2a) overlap each other.

The member B (2) has 1 or more through-holes (2 a). The cross section of the through-hole (2a) is substantially the same size as the cross section of the recess (1 c). Specifically, the cross-sectional area of the through-hole (2a) is preferably 1 to 1.5 times, more preferably 1 to 1.3 times, still more preferably 1 to 1.25 times, and particularly preferably 1.21 times the cross-sectional area of the recess (1c) of the member a (1).

The shape of the through-hole in the member B, the material of the member B, and the like are described in detail in the "Vitrigel film dried body manufacturing method" described above.

The member B (2) may have a receiving-side hole (2B) for a positioning pin for concentrically arranging the member A (1) and the member B (2) so that the recess (1c) of the member A (1) and the through hole (2a) of the member B (2) overlap each other. Since the receiving-side hole (2B) for the positioning pin is provided, the member A (1) and the member B (2) can be arranged concentrically so that the recess (1c) and the through-hole (2a) overlap each other.

The Vitrigel membrane dry body manufacturing apparatus of the present embodiment is not limited to the apparatus shown in fig. 1A to 1C, and a part of the apparatus shown in fig. 1A to 1C may be modified or deleted and/or another configuration may be added to the manufacturing apparatus described so far, within a range that does not impair the effects of the Vitrigel membrane dry body manufacturing apparatus of the present embodiment.

For example, although fig. 1A to 1C illustrate a manufacturing apparatus in which the cross section of the recess of the member a and the cross section of the through hole of the member B are circular, the manufacturing apparatus is not limited thereto, and may have other shapes. As the shape of the cross section, the same shapes as exemplified in the above-mentioned method for producing a Vitrigel film dried body can be cited.

For example, although the manufacturing apparatus in which the number of the recesses of the member a and the number of the through holes of the member B are 6 is illustrated in fig. 1A to 1C, the manufacturing apparatus is not limited to this, and other numbers such as 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, and 20 may be used.

For example, although fig. 1A to 1C illustrate a manufacturing apparatus in which the members a and B have a cylindrical shape, the manufacturing apparatus is not limited to this, and may have other shapes such as a truncated cone, a truncated pyramid, a polyhedron (for example, a tetrahedron, a pentahedron, a hexahedron (including a cube), an octahedron, a dodecahedron, an icosahedron, and an icosahedron.

< other constitutions >

The Vitrigel membrane dried body manufacturing apparatus according to the present embodiment may further include a member D having 1 or more cylindrical scrapers. The number of the cylindrical scrapers may be the number corresponding to the number of the concave portions of the member a.

In the case of disposing the member a and the member D concentrically with respect to the member D, the cylindrical doctor blade is disposed so that the concave portion of the member a overlaps the cylindrical doctor blade. By using this member D, the Vitrigel film dried body produced in the concave portion of the member a can be easily cut off.

Manufacturing apparatus for device to which Virgigel film dried body is bonded

Embodiment 1

The manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment includes the manufacturing apparatus of the Vitrigel film dried body according to the above embodiment and the member C. The member C has 1 or more concave portions. The cross-section of this recess is approximately the same size as the cross-section of the recess of component a. The recessed portion of the member C is fitted with a cylindrical member, which is a main body of the apparatus to which the Vitrigel film dried body is bonded, so as to be able to be inserted and removed. In the manufacturing apparatus of the device to which the Vitrigel film dry body is bonded according to the present embodiment, when the member a and the member C are concentrically arranged, the recess of the member a and the recess of the member C are arranged so as to overlap each other.

According to the apparatus for manufacturing a Vitrigel film dry body-bonded device of the present embodiment, the Vitrigel film dry body-bonded device can be continuously manufactured by the apparatus for manufacturing a Vitrigel film dry body-bonded device.

Fig. 1A is a plan view showing an example of a manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment. Fig. 1B is a front view showing an example of a manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment. Fig. 1C is a perspective view showing an example of a manufacturing apparatus of the device to which the Vitrigel film dried body is bonded according to the present embodiment.

In fig. 1A to 1C, the apparatus (100) for manufacturing a device to which a Vitrigel film dried body is bonded includes a Vitrigel film dried body manufacturing apparatus (10) and a member C (3). The Vitrigel film dried body manufacturing apparatus (10) is as described in the above "Vitrigel film dried body manufacturing apparatus".

The member C (3) has 1 or more recessed portions (3 a). The cross section of the recess (3a) is substantially the same size as the cross section of the recess (1c) of the member A (1). Specifically, the area of the cross section of the recess (3a) is preferably 1.0 times or less, more preferably 0.9 times or less, still more preferably 0.8 times or less, and particularly preferably 0.75 times the area of the cross section of the recess (1 c).

The details of the shape of the recess in the member C, the material of the member C, and the like are as described in the method for manufacturing the device to which the Vitrigel film dried body is bonded.

The member C (3) may have a receiving-side hole (3b) for a positioning pin for concentrically arranging the member a (1) and the member C (3) so that the recess (1C) of the member a (1) and the recess (3a) of the member C (3) overlap each other. Since the receiving-side hole (3b) for the positioning pin is provided, the member A (1) and the member C (3) can be arranged concentrically so that the recess (1C) and the recess (3a) overlap each other.

A cylindrical member (5) is removably and insertably fitted into the recess (3a) of the member C (3), and the cylindrical member (5) is a main body of a device to which a Virgigel film dried body is bonded. Thus, the manufactured dried Vitrigel film-bonded device can be easily taken out.

The details of the shape, material, and the like of the cylindrical member are as described in the above "method for manufacturing a device to which a Vitrigel film dry body is bonded".

Embodiment 2

The apparatus for manufacturing a device to which a Vitrigel film dried body is bonded according to the present embodiment may include 2 or more apparatus for manufacturing Vitrigel film dried bodies according to the above embodiments.

The manufacturing apparatus of the device to which the Vitrigel film dry body is bonded according to the present embodiment is the same as the manufacturing apparatus of the device to which the Vitrigel film dry body is bonded according to embodiment 1, except that the manufacturing apparatus of the Vitrigel film dry body includes 2 or more pieces.

By providing a manufacturing apparatus for Virgigel film dried bodies with 2 or more, a device having Virgigel film dried bodies bonded to both surfaces thereof can be manufactured easily.

The number of the devices for producing Vitrigel film dried bodies is not limited to 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, and the like. Among them, the number of the devices for manufacturing the Vitrigel film dried bodies is preferably an even number in view of being able to manufacture 2Vitrigel film dried bodies simultaneously.