阅读说明：本技术 用于杀菌滤盘的堆叠装置 (Stacking device for sterilization filter disc ) 是由 丹尼斯·哥尔兹 比安卡·罗森 伊娃·斯特雷特 蒂莫·纳特尔 于 2020-02-20 设计创作，主要内容包括：本发明涉及一种用于接纳医疗产品,优选用于杀菌的、可堆叠的滤盘(1),其具有一个滤盘底部(2)和设置在所述滤盘底部(2)上的、向上延伸的滤盘侧壁(4,6)。所述滤盘底部(2)在其下侧面上在边缘区域中具有一个环绕的凸台,所述凸台将至少两个滤盘(1)在堆叠状态中沿着滤盘(1)的长度方向和宽度方向通过如下方式相互固定,即第一滤盘(1)的凸台与第二滤盘(1)的滤盘侧壁(4,6)嵌接。(The invention relates to a stackable filter disc (1) for receiving a medical product, preferably for sterilization, having a filter disc base (2) and upwardly extending filter disc side walls (4, 6) arranged on the filter disc base (2). The filter disk base (2) has a circumferential projection on its underside in the edge region, which projection secures at least two filter disks (1) to one another in the stacked state in the longitudinal direction and in the width direction of the filter disks (1) in such a way that the projection of a first filter disk (1) engages with a filter disk side wall (4, 6) of a second filter disk (1).)

1. Filter disc (1) for receiving a medical product, preferably for sterilization, having a filter disc bottom (2) and upwardly extending filter disc side walls (4, 6) arranged on the filter disc bottom (2), characterized in that:

the filter disk base (2) has a circumferential projection or a bend (13) on its underside in the edge region, the projection or the bend (13) being provided and designed for fixing two filter disks (1) to one another in the stacked state in the longitudinal direction and in the width direction of the filter disks (1) in such a way that the projection (13) of a first filter disk (1) engages with the filter disk side walls (4, 6) of a second filter disk (1).

2. Stackable filter disc (1) according to claim 1, characterized in that: the width (B1) of the circumferential projection (13) corresponds to the thickness of the filter disk side walls (4, 6).

3. Stackable filter disc (1) according to claim 1, the filter disc (1) furthermore having at least one handle (12) pivotably articulated to the filter disc side walls (4, 6) and a filter disc cover (14) closing the filter disc (1), characterized in that: a circumferential projection (17) which is exposed in the region of the handle (12) is formed on the filter disk cover (14), wherein at least one filter disk (1), preferably the lower filter disk (1), of at least two filter disks (1) is closed by the filter disk cover (14), wherein the projection (17) secures the at least two filter disks (1) to one another in the stacked state in such a way that the projection (17) of the filter disk cover (14) engages with the projection (13) of the upper filter disk (1).

4. Stackable filter disc (1) according to claim 3, characterized in that: the filter disk cover (14) also has a circumferential, projecting edge (16) on its outer side, which edge is exposed in the region of the carrying handle (12), said edge (16) enclosing the upper edge of the filter disk side walls (4, 6) when the filter disk cover (14) is placed on the filter disk (1).

5. Stackable filter disc (1) according to claim 3, characterized in that: the filter disc cover (14) is recessed downward in the region of the handle (12) and forms a handle receiving region (18), so that the handle (12) is flush-locked with the surface of the filter disc cover (14) in the folded-up position.

6. Stackable filter disc (1) according to claim 5, characterized in that: a handle recess (20) is formed centrally in the filter disk cover (14) on the downwardly recessed handle receiving region (18).

Technical Field

The present disclosure relates to a stackable filter disc for receiving a medical product, in particular for sterilization or for encasing in a sterile container.

Background

As is known, sterilization filter discs must be placed in a preparation unit for medical products for transport or in a sterile barrier system for sterilization. In order to at the same time take up as little loading space as possible, it is necessary to be able to stack these filter discs as space-saving and safe as possible.

Sterilization filter discs, such as those requiring an additional element for stacking function, are well known. The additional element must in this case be fastened to the sterilising filter disc, for example via a clamping device. DE 102012016970 a1 discloses a filter basket which can be connected to at least one second filter basket via a flat terminal spring or clip. The clip is directed inwardly and latches into a recess formed in the wall of the filter basket. As an alternative, those sterilization filter discs are also known, in which the filter discs stacked on each other are supported by the filter disc feet. If a flexible package is used as a sterile barrier system, it may break due to the point load acting as a foot of the filter tray. If the sterilization filter discs known to date, which are stackable, are additionally closed with a cover and stacked with a cover, there are no lateral limit stops, which easily allow the upper filter disc of the stack to slide.

Disclosure of Invention

It is therefore an object of the present invention to provide a filter disc which enables safe stacking of filter discs with and without a filter disc cover.

This object is achieved by a stackable filter disc according to claim 1.

The (stackable) filter disk according to the invention for receiving a medical product, preferably for sterilization, has a filter disk bottom and a filter disk side wall arranged on the filter disk bottom and extending substantially perpendicularly thereto. On an outer/lower side of the filter disk base, in the edge region thereof, in particular integrally/materially, a circumferential projection is formed, which secures at least two filter disks to one another in the stacked state in the longitudinal and width direction of the filter disks. The encircling lug boss of the first upper filter disc is embedded with the side wall of the second lower filter disc. This integral design of the filter discs makes it possible to stack a plurality of filter discs safely without having to provide additional components on the filter discs.

According to the invention, the stackable filter disc may be configured to: the width of the circumferential projection corresponds substantially to the thickness of the side wall of the filter disk. This reduces the space requirement of the stacked filter discs and facilitates the handling of the disc stack (Schalenstapel) if the outer sides of the stacked filter discs are thus substantially flush-locked to each other by the upper surface. Furthermore, it is advantageous here if the circumferential projection is configured substantially conically. That is, the circumferential ledge extends outwardly from the bottom of the filter disc while at the same time becoming tapered such that the internal cross-sectional area defined by the circumferential ledge becomes smaller in the direction of extension of the circumferential ledge. The tapering of the circumferential projection is also advantageous in this case for the stacking of two filter discs, since the projection has an additional guiding effect during stacking and the stacked filter discs are additionally centered relative to one another.

In one embodiment of the invention, the stackable filter disk furthermore has at least one handle which is pivotably connected to a side wall of the filter disk and a filter disk cover which closes the filter disk. In this case, a substantially circumferential, however exposed/interrupted projection is formed on the filter disk cover, which projection secures at least two filter disks, at least one of which, preferably the lower filter disk, in the stacked state with the filter disk cover, to each other in such a way that the projection of the filter disk cover engages with the projection of the upper filter disk. The filter disc cover also has a circumferential, projecting edge on its outer side, which edge is exposed in the region of the handle and surrounds the upper edge of the filter disc side wall when the filter disc cover is placed on the filter disc. This has the following advantages: even in the case of using a filter disc with a filter disc cover, a safe stacking is ensured and possible mutual sliding of the filter discs can be prevented. The filter disc cover can also be prevented from sliding on the filter disc by the filter disc side walls being enclosed by the projecting edge of the filter disc cover.

In one embodiment of the invention, the filter disk cover is recessed in the region of the handle, i.e. pressed in the manner of a concave cavity, so that the handle can be lowered into the cavity in the folded-up position and thus locked essentially flush with the upper surface of the filter disk cover, which makes possible a secure stacking of the filter disk together with the handle connected thereto in a hinged manner without costly modifications to the filter disk.

In this case, a handle recess is formed centrally in the downwardly/inwardly recessed handle receiving region in the filter disk cover. The handle recesses improve handling of the filter disc, since the handle can be easily grasped in the folded-up state even with the filter disc cover placed thereon.

Drawings

FIG. 1 is a perspective view of a stackable filter tray of a preferred embodiment;

FIG. 2 is a side view of a portion of a preferred embodiment stackable filter tray;

FIG. 3 is a side view of two stackable filter discs of the preferred embodiment;

FIG. 4 is a partial section of a filter tray cover of the stackable filter tray of the preferred embodiment;

FIG. 5 is a process flow diagram of a method for making stackable filter discs;

FIG. 6 is an additional process flow diagram of a method for making stackable filter discs; and

FIG. 7 is yet another additional process flow diagram of a method for making stackable filter discs.

Detailed Description

One embodiment of the present disclosure is explained below based on the drawings.

FIG. 1 is a perspective view of a preferred embodiment of a stackable filter tray 1. The filter disc 1 has a substantially rectangular filter disc base 2 and filter disc side walls 4, 6 which extend upwards and are arranged on the filter disc base 2.

The filter disk bottom 2 is made of a (perforated) metal plate in which a large number of through-holes 10 are punched out side by side, wherein the material of the filter disk bottom 2 remains between the through-holes 10 in the form of elongated connecting strips 9. The through-opening 10 is in the preferred embodiment designed as a long hole with rounded corners, but can also have a square or rectangular cross section. Similar to the filter disk bottom 2, the filter disk side walls 4, 6 can also be formed with through-openings 10 in the form of oblong holes and connecting strips 9 remaining between them.

Alternatively, the filter disk bottom 2 and the filter disk side walls 4, 6 can also be designed in any other shape. Thus, for example, they can be designed without through-openings 10 or be produced from a grid-like or net-like structure which is formed by a plurality of wires running parallel to one another and a plurality of wires likewise running parallel to one another and perpendicular to the first wires being woven together in such a way that square or rectangular through-openings are formed between the wires.

On two opposite filter disk side walls 4, preferably two filter disk side walls 4 arranged on the short sides of the rectangular filter disk bottom 2, a handle 12 is pivotably connected in each case centrally on an upper end/end section. According to a preferred embodiment, the handle 12 is arranged on the filter disk side wall 4 in such a way that it projects on the inner side of the filter disk 1 substantially perpendicular to the filter disk side wall 4 in the folded-up state. In the unfolded state, the handle 12 again extends substantially parallel to the filter disk side wall 4 and upwards.

FIG. 2 is a side view of a portion of a preferred embodiment of a stackable filter disc 1. In the edge region of the filter disk bottom 2, a circumferential rib/frame-shaped bend 13 is formed on its underside, which rib retracts the filter disk bottom 2 downward toward its center. One width B1 of the projections/folds 13 in the region of the filter disc bottom 2 corresponds here substantially to the thickness of the filter disc side walls 4, 6, so that-as can be seen in fig. 3-the stacked filter discs 1 of the preferred embodiment can be fixed to one another in the length direction and in the width direction of the filter disc 1 in such a way that the projections 13 of the upper filter disc 1 engage with the filter disc side walls 4, 6 of the lower filter disc 1.

As can be seen in fig. 2, the projection 13 is also conical in the preferred embodiment. That is, an inner cross-sectional area defined by the boss 13 decreases in the extending direction thereof (downward in fig. 2). A width B2 at the end section of the projection 13 facing away from the filter disk bottom 2 is therefore greater than the width B1.

In fig. 2 it can also be seen that the projection 13 in side view essentially follows the shape of the undercut. That is to say, the projection 13 has a first radius of concave curvature in the region of the filter disk bottom 2 and a second radius of convex curvature at the end section of the projection 13 facing away from the filter disk bottom 2.

In other words, if at least two filter discs 1 of the preferred embodiment are stacked, the bosses 13 of the filter disc bottom 2 of the upper filter disc 1 are supported by the filter disc side walls 4, 6 of the lower filter disc 1 in such a way that the two filter discs 1 are prevented from sliding relative to each other in the stacked state. Further, the filter disk 1 of the preferred embodiment is constituted by: the filter disk side walls 4, 6 of the upper and lower filter disks 1, in the stacked state, engage each other substantially flush with the surface, as is shown in fig. 3.

In other words, the filter disk base 2 is preferably provided with a frame-like circumferential bend 13 by extrusion, so that a base plate attachment (Bodenaufsatz)/base plate extension is produced which can be pressed into a further, preferably identically constructed filter disk substantially in a precisely fitting manner with little play, so that the two filter disks are connected to one another in the manner of a game block of the known type.

Fig. 4 shows a part of a filter disc cover 14 for closing the stackable filter disc 1 of the preferred embodiment. The filter disk cover 14 here has a substantially rectangular shape, similar to the filter disk 1, and is formed with a circumferential edge/frame/flange 16 on its edge region, which extends on the outer side. The upwardly projecting edge 16 is essentially designed in the form of a circular arc/flange/rim plate. The width of the projecting edge 16 corresponds to the thickness of the filter disk side walls 4, 6, so that the projecting edge 16 surrounds the filter disk side walls 4, 6 on both sides (inside and outside) when the filter disk cover 14 is placed on the filter disk 1 and fixes the filter disk cover 14 relative to the filter disk 1 in the longitudinal direction and in the width direction of the filter disk 1.

In other words, when the filter disc 1 is closed with the filter disc cover 14, the protruding edge 16 of the filter disc cover 14 surrounds the filter disc side walls 4, 6 in a tongue-and-groove or tenon-and-groove manner, thus preventing the filter disc 1 and the filter disc cover 14 from sliding over each other.

Similar to the filter disk 1, the filter disk cover 14 is made here of a metal plate in which a multiplicity of through-holes 10 are punched out side by side, wherein the material of the filter disk cover 14 remains between the through-holes 10 in the form of elongated connecting strips 9. The through-opening 10 is in the preferred embodiment designed as a long hole with rounded corners, but can also have a square or rectangular cross section.

Alternatively, the filter disk cover 14 can also be designed in any other shape. Thus, for example, the filter disk cover can be designed without through-openings 10 or with only partial through-openings 10 or be produced from a mesh-like structure which is formed by a plurality of wires running parallel to one another and a plurality of wires likewise running parallel to one another and perpendicular to the first wires being woven together in such a way that square or rectangular through-openings are formed between the wires.

As can be seen in fig. 1 and 4, the filter disk cover 14 is not formed with through-openings 10 over its entire surface. The central surface of the filter disk cover 14 is formed as a complete surface. However, this central surface is only shown as a complete surface without through-openings for greater clarity, while the filter disk cover 14 is formed with through-openings 10 over its entire surface in the preferred embodiment, as described above.

As can be seen in fig. 4, a circumferential projection/recess 17 is also formed on the filter disk cover 14, which projection is formed by a frame-like upwardly projecting edge 16 for the center plane of the filter disk cover 14 and corresponds essentially to the cross section of the base plate extension. At least two filter discs 1 can thus be stacked even when the lower filter disc 1 is closed with the filter disc cover 14, since in this case the projections (floor extensions) 13 engage with the projections/recesses 17 of the filter disc cover 14 on the filter disc base 2 of the upper filter disc 1. The lower filter disc 1 including the filter disc cover 14 and the upper filter disc 1 can therefore be prevented from slipping relative to each other as described above.

In addition, a section of the filter disc lid 14 is displaced downward in the shape of a further lug depression centrally on the short side of the filter disc lid 14, so that when the filter disc lid 14 is placed on the filter disc 1 and the handle 12 is in the folded-up state, the handle 12 is received substantially flush on the upper surface in a handle receiving region (handle depression) 18 formed by the retraction of the filter disc lid 14 and does not project from the filter disc lid 14. The depth of the handle receiving region 18 preferably corresponds here substantially to the thickness of the handle 12.

In order to be able to easily place the filter disk cover 14 on the filter disk 1, a handle recess 20 is also formed in a region of the handle receiving region 18 which is close to the side wall of the filter disk. The width of the handle recess 20 corresponds here substantially to the depth of the hinge of the handle 12, so that the handle 12 slides easily through the handle recess 20 when the filter disc lid 14 is placed on the filter disc 1 and can then be folded.

In order to prevent the filter disk cover 14 from lifting off the filter disk 1 unintentionally, a handle locking element 22 is provided centrally on an edge region of the handle receiving region 18 which is oriented toward the center of the filter disk cover 14. This handle locking member 22 has, in the preferred embodiment, a recess which receives and holds the handle 12 in the collapsed condition and thus secures the filter disc lid 14 to the filter disc 1. Alternatively, the handle locking member 22 may be configured to: the handle 12 in the collapsed state is clamped and thus secured between the handle locking member 22 and one wall of the handle receiving area 18.

In addition, the filter tray cover 14 can be grasped and lifted on the handle lock 22 in the unfolded state of the handle 12. This additionally improves the handling of the filter disc 1 and the filter disc cover 14.

Fig. 5 shows a first possibility of a process for making the filter disc 1 in chronological order. In this case, laser cutting I, punching II (including punching undercut (Stanz-nibble n) if the part to be punched is only partially punched and partially cut), rolling III, die pressing V, bending IV and welding VI are performed in chronological order.

Fig. 6 shows a second possibility of a process in chronological order. In this case, laser cutting I, blanking II (including blanking undercuts if the part to be stamped is only partially blanked and partially severed), rolling III, bending IV, die pressing V and welding VI are carried out in chronological order.

A third possibility of a process for making the filter disc 1 is shown chronologically in fig. 7. In this case, laser cutting I, punching II (including punching undercuts if the part to be punched is only partially punched out and partially severed), rolling III, a stamping and bending step V and welding VI are carried out in chronological sequence.

To produce the filter disk, a rectangular blank of arbitrary shape and a material thickness of about 0.5mm to 2mm, preferably about 1.5mm, is cut along a cutting contour during the laser cutting I, whereby a filter disk base surface is formed. After the blanking step or the blanking undercut step II, a punched blank with the punched-out through-hole 10 is formed. The sheet material after cutting I and blanking II has in fact a certain internal stress, which causes the deformation of the original shape. Therefore, rolling III should now be carried out, which flattens the sheet material, so that a perforated flat surface is obtained.

During the embossing V, which produces the desired three-dimensional structure in a manner imitating a textile, the surrounding bosses 13 are formed.

After bending IV, a filter disc shape is obtained, which is finally fixed by welding VI. That is to say, the filter disk side walls 4, 6 are welded after they have been bent.

As can be seen from fig. 5 to 7, the process sequence of the individual process steps, in particular the bending IV and the embossing V, differs for the different production possibilities. In this way, according to the first and second possibilities, the embossing V can be carried out before or after the bending IV. Alternatively, the embossing V and the bending can also be carried out in a separate processing step (see fig. 7).