阅读说明：本技术 导管套组 (Catheter set ) 是由 高田洋平 清水良幸 小杉壮 冈田裕之 于 2018-05-15 设计创作，主要内容包括：导管套组(30)具备：导管(31),其具有光纤(33)；及导管收纳件(32),其收纳导管(31)。导管收纳件(32)具有管状的环箍(36)及设置于环箍(36)的位置调整机构(47)。环箍(36)具有：环箍前端部(36a),其配置有在光纤(33)传递的激光(L)被出射的导管前端部(31a)；及与环箍前端部(36a)相反侧的环箍基端部(36b)。位置调整机构(47)设置于环箍基端部(36b)且变更导管前端部(31a)相对于环箍前端部(36a)的位置。(A catheter set (30) is provided with: a catheter (31) having an optical fiber (33); and a catheter housing (32) which houses the catheter (31). The catheter housing (32) has a tubular hoop (36) and a position adjustment mechanism (47) provided to the hoop (36). The hoop (36) has: a ferrule distal end portion (36a) at which a catheter distal end portion (31a) from which the laser light (L) transmitted by the optical fiber (33) is emitted is disposed; and a hoop base end section (36b) on the opposite side of the hoop tip end section (36 a). The position adjustment mechanism (47) is provided on the hoop base end section (36b) and changes the position of the catheter tip section (31a) relative to the hoop tip section (36 a).)

1. A catheter set is characterized in that,

the disclosed device is provided with:

a catheter having an optical fiber; and

a catheter receiving member for receiving the catheter,

the catheter receiver includes:

a tubular hoop; and

a position adjusting part arranged on the hoop,

the ferrule comprises: a ferrule distal end portion provided with a catheter distal end portion from which light transmitted by the optical fiber is emitted; and a hoop base end portion on the opposite side of the hoop tip end portion;

the position adjusting unit changes the position of the catheter tip with respect to the hoop tip.

2. The catheter kit of claim 1,

the catheter receiver also has a closure disposed at an end of the ferrule,

the closing portion includes a transmission window portion through which the light emitted from the catheter is transmitted.

3. The catheter kit of claim 2,

the end of the hoop has an opening therein,

a catheter tip portion for emitting light transmitted through the optical fiber is disposed at an end portion of the ferrule,

the light-transmitting window portion closes the opening and transmits the light.

4. The catheter kit of claim 2 or 3,

the closing portion is a cover member that is detachable with respect to the hoop.

5. The catheter kit of any of claims 2-4,

the closing portion is a part of the hoop, and is a lid portion integrated with the hoop.

6. The catheter kit of any of claims 1-5,

the hoop has: and a through hole extending in a direction intersecting the longitudinal direction of the hoop and extending from the outer peripheral surface to the inner peripheral surface.

Technical Field

The present invention relates to a catheter set for housing a catheter with an optical fiber built therein.

Background

Catheters with built-in optical fibers are used for diagnosis and treatment of patients. For example, patent document 1 discloses a thrombolytic therapy. When the catheter is used for thrombolytic therapy, first, the catheter is inserted into the body of a patient. Thereafter, the affected part is irradiated with laser light via the catheter.

Disclosure of Invention

Problems to be solved by the invention

The catheter is inserted into the body in use. Therefore, sufficient sterilization is required for insertion into the body. Therefore, the catheter is stored in a tubular storage member called a hoop for keeping cleanliness during storage and transportation. Therefore, in order to maintain the cleanliness of the catheter, it is preferable to store the catheter in advance in the hoop immediately before use.

In the method disclosed in patent document 1, the affected part is preferably irradiated with a laser beam having a predetermined intensity. Therefore, as disclosed in patent documents 2 and 3, the light intensity is checked immediately before the start of treatment.

Accordingly, an object of the present invention is to provide a catheter set that can maintain the cleanliness of the catheter and facilitate the confirmation of the light intensity.

Means for solving the problems

A catheter set according to an aspect of the present invention includes: a catheter having an optical fiber; and a catheter housing member for housing the catheter, the catheter housing member including: a tubular hoop; and a position adjustment part provided to the hoop, the hoop having: a ferrule distal end portion provided with a catheter distal end portion from which light transmitted through the optical fiber is emitted; and a hoop base end portion on the opposite side of the hoop tip end portion, wherein the position adjusting portion changes the position of the catheter tip portion with respect to the hoop tip portion.

According to the catheter set, the light intensity can be measured in a state where the catheter is accommodated in the ferrule. Therefore, the light intensity can be easily checked while maintaining the cleanliness of the catheter. Further, according to the catheter set, the position of the catheter tip during storage and the position of the catheter tip during measurement can be changed from each other. That is, the catheter tip portion can be disposed on the back side of the hoop tip portion during storage. As a result, the tip of the catheter can be protected. Further, the positions of the tip portion of the catheter and the tip portion of the ferrule can be matched in the measurement. As a result, the variation in the distance from the tip of the guide tube to the light receiving section can be suppressed.

The catheter housing may further include a closing portion provided at an end portion of the hoop, and the closing portion may include a transmission window portion through which light emitted from the catheter passes. According to this configuration, the distal end portion of the catheter can be reliably protected and the light intensity can be measured.

The end of the ferrule may have an opening, and a distal end portion of a guide tube from which light transmitted through the optical fiber is emitted may be disposed at the end of the ferrule, and the light may be transmitted through the transmission window while closing the opening. With this configuration, the distal end portion of the catheter can be reliably protected and the light intensity can be measured.

The closing portion may be a cover member that is detachable from the hoop. According to this configuration, the configuration of the hoop end can be selected according to the measurement mode of the light intensity. That is, a mode in which measurement is performed while protecting the end of the emitted light and a mode in which measurement is performed while directly allowing light to enter the measurement device can be selected.

The closing portion may be a part of the hoop and may be a lid portion integrated with the hoop. According to this structure, the lid portion does not fall off from the collar. As a result, the distal end portion of the catheter is reliably protected.

The hoop may have: and a through hole extending in a direction intersecting the longitudinal direction of the ferrule and extending from the outer peripheral surface to the inner peripheral surface. According to this configuration, the sterilizing gas can be appropriately supplied to the pipe housed in the ferrule.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a catheter set capable of maintaining the cleanliness of the catheter and facilitating the confirmation of the light intensity can be provided.

Drawings

Fig. 1 is a diagram showing a configuration of a light measurement device according to an embodiment.

Fig. 2 is an enlarged cross-sectional view of the adapter and catheter set shown in fig. 1.

Fig. 3 is a sectional view for explaining the operation of the position adjustment mechanism.

Fig. 4 is a flowchart showing main steps of the light measurement method according to the embodiment.

Fig. 5 is a diagram for explaining the main steps shown in fig. 4.

Fig. 6 is a diagram for explaining main steps subsequent to the steps shown in fig. 5.

Fig. 7 is a diagram for explaining main steps subsequent to the steps shown in fig. 6.

Fig. 8 is a perspective view showing a cross section of the catheter set according to the modification examples 1, 2, and 3.

Fig. 9 is a perspective view showing a cross section of the catheter set according to the modification examples 4, 5, and 6.

Fig. 10 is a side view showing a cross section of a catheter set according to modification 7.

Fig. 11 is a plan view showing a catheter set according to modification 8.

Fig. 12 is a side view showing a cross section of the catheter set according to the modification 9, 10, 11.

Fig. 13 is a perspective view showing a cross section of a catheter set according to modifications 12 and 13.

Detailed Description

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

As shown in fig. 1, the light measuring device 1 measures the intensity of the laser light L. The laser light L is supplied from the light source 101 to the catheter kit 30. Then, the laser light L is emitted from the guide pipe sleeve group 30. The light measuring device 1 includes a power meter 2 and a connector 3 (2 nd connector). In the following description, the side of each component from which light is emitted is referred to as the "tip". The opposite side of the "tip" is referred to as the "base end". For example, in the catheter set 30, the end from which the laser light L is emitted is the "tip end". The end portion receiving the laser light L is a "base end portion".

The power meter 2 includes a case 4, a light receiving unit 6, a mounting unit 7, and a processing device 8.

The housing 4 maintains the relative positional relationship between the light receiving unit 6 and the mounting unit 7. The housing 4 is made of an opaque material. The housing 4 constitutes a closed space together with the adapter 3. The light receiving unit 6 is disposed inside the sealed space. With this configuration, stray light can be prevented from being incident on the light receiving unit 6.

The light receiving unit 6 receives the laser light L output from the conduit set 30. Light receiving section 6 includes, for example, a light absorber. Light receiving section 6 converts the absorbed light into heat. Then, the light receiving unit 6 outputs the change in heat as a change in an electrical signal. Examples of the light absorber include 3A-P available from Ophir. The electric signal output from the light receiving unit 6 is transmitted to the processing device 8 via a signal cable. The processing device 8 determines the intensity of the light received by the light receiving unit 6 based on the electric signal. The processing means 8 then displays the intensity value.

The mounting portion 7 is provided at a position facing the light receiving portion 6. The mounting portion 7 may also be part of the housing 4. The mounting portion 7 defines the position of the conduit set 30 with respect to the light receiving unit 6. The position of the conduit set 30 with respect to the light receiving unit 6 includes the distance from the tip of the conduit set 30 to the light receiving unit 6 in the traveling direction of the laser light L emitted from the conduit set 30. This position includes the position of the tip of the catheter kit 30 relative to the light receiving unit 6 in the plane orthogonal to the direction of travel of the laser beam L. The mounting portion 7 has an upright tube portion 7a protruding from the housing 4. The rising cylinder portion 7a has an adapter arrangement portion 7H as a through hole. The catheter set 30 is disposed in the adapter disposition portion 7H via the adapter 3. The front end of the adapter arrangement portion 7H is a front end opening 7Ha provided in the inner wall of the housing 4. The proximal end of the adapter arrangement portion 7H is a proximal end opening 7Hb provided at the end of the mounting portion 7.

As shown in fig. 2, the adapter 3 attaches the conduit set 30 to the power meter 2. The adapter 3 may also be formed by polyacetal, for example. The adapter 3 has an adapter body 9 and an adapter flange 11. The adapter body 9 is formed integrally with the adapter flange 11. The adapter main body 9 is disposed in the adapter disposing portion 7H. The adapter body 9 has an adapter front end surface 3 a. An external thread may be provided on the outer peripheral surface of the adapter body 9. The adapter flange 11 is provided on the base end side. The adaptor flange 11 has an adaptor base end face 3 b. The outer diameter of the adapter flange 11 is larger than the inner diameter of the adapter arrangement portion 7H. The adapter flange 11 may also touch the mounting end surface 7b of the mounting portion 7.

The adapter 3 has a hoop arrangement portion 3H that holds the tip of the catheter bundle 30. The hoop arrangement portion 3H is a hole extending from the adaptor base end surface 3b to the adaptor distal end surface 3 a. The proximal end side of the hoop arrangement portion 3H is a proximal end opening 3Hb provided in the adapter proximal end surface 3 b. Further, a chamfer (tapered shape) may be provided in the base end opening 3 Hb. On the tip end side of the hoop arrangement portion 3H, an adapter tip wall 3d is provided. When the conduit set 30 is disposed at the hoop disposition portion 3H, the tip of the conduit set 30 contacts the adapter tip wall 3 d. More specifically, the front end surface of the protective cover 43 described below is in contact with the adapter front end wall 3 d. Therefore, the adapter front end wall 3d defines the insertion depth of the conduit set 30 with respect to the adapter 3. The adapter front end wall 3d is provided with a light passing portion 3e as a through hole. The light passage section 3e guides the laser light L emitted from the catheter assembly 30 to the light receiving section 6. Therefore, the abutment portion 3c (2 nd touching portion) is constituted by the adapter front end wall 3d and the light passing portion 3 e.

Next, the catheter set 30 will be described in detail. The catheter set 30 includes a catheter 31 and a catheter receiver 32. The catheter 31 houses an optical fiber 33. The catheter 31 may have other components 34 necessary for treatment and examination in addition to the optical fiber 33. The optical fiber 33 has a fiber tip portion 33a and a fiber base portion 33 b. The fiber tip 33a is inserted into the body. The fiber tip 33a emits laser light L. The light source 101 (see fig. 1) is connected to the fiber base end portion 33 b. Then, the laser light L is supplied to the fiber base end portion 33 b.

The catheter receiver 32 receives the catheter 31. The catheter receiver 32 includes: a hoop 36, a holding plug 37 (catheter holding section), a protective cover 43, and an extension tube 46 (see fig. 1).

The hoop 36 is in the shape of a tubular tube. The hoop 36 in the present embodiment is a hoop used in a medical field. The ferrule 36 is a resin tube into which the catheter 31 is inserted. Further, the presence or absence of flexibility is not required for the hoop 36. Hoop 36 may or may not be flexible. The ferrule 36 has a ferrule distal end portion 36a on which the catheter distal end portion 31a is disposed, and a ferrule proximal end portion 36b on which the catheter proximal end portion 31b is disposed. The ferrule distal end portion 36a is provided with a distal end opening 36 c. That is, the hoop tip end 36a is not closed. In other words, the ferrule distal end portion 36a is opened. The hoop base end portion 36b also has a base end opening 36 d. That is, the hoop base end portion 36b is also not closed. In other words, the hoop base end 36b is opened. The collar 36 is provided with a gas introduction hole 36 e. The gas introduction hole 36e is provided in the side wall of the collar 36. Then, the gas introduction hole 36e penetrates from the outer peripheral surface to the inner peripheral surface.

Here, the relationship between the inner diameter (f) and the outer diameter (d) of the ferrule 36 and the inner diameter (e) of the light passing portion 3e of the adapter 3 is f < e < d. This dimensional relationship can prevent the catheter distal end portion 31a from coming into contact with an unsterilized portion.

The holding plug 37 is arranged on the side of the hoop base end 36b so as to be press-fitted into the base end opening 36 d. The holding plug 37 has a pipe arrangement portion 38, a press-fitting portion 39 for press-fitting the ferrule 36, and a flange portion 41. The conduit arrangement part 38 is a through hole for holding the conduit 31. The position of the catheter 31 relative to the hoop 36 is maintained when the retaining pin 37 is inserted into the hoop 36. That is, the holding pin 37 is fixed with respect to the hoop 36. Thus, the holding plug 37 holds the guide tube 31. Thus, the holding pin 37 inserted into the collar 36 holds the position of the catheter 31 with respect to the collar 36.

The catheter arrangement portion 38 is arranged on the catheter base end portion 31b side. The inner diameter of the conduit arrangement 38 is slightly smaller than the outer diameter of the conduit 31. According to this structure, the inner peripheral surface of the conduit arrangement part 38 is pressed against the outer peripheral surface of the conduit 31. As a result, the position of the guide tube 31 with respect to the holding plug 37 is held. The press-fitting portion 39 is press-fitted into the ferrule 36 from the proximal end opening 36d of the ferrule proximal end portion 36 b. The press-in portion 39 has an outer diameter slightly larger than the inner diameter of the collar 36. With this configuration, the outer peripheral surface of the press-fitting portion 39 is pressed against the inner peripheral surface of the ferrule 36. As a result, the position of the holding pin 37 with respect to the ferrule 36 is maintained. The flange 41 is provided on the proximal end side of the press-fitting portion 39. The outer diameter of the flange portion 41 is larger than the inner diameter of the collar 36.

The protective cap 43 is mounted to the collar 36. The protective cover 43 has a cylindrical shape with one end closed and the other end opened. The protective cover 43 may be formed of, for example, acrylic. The protective cover 43 closes the front end opening 36c of the hoop front end 36 a. According to this structure, the catheter distal end portion 31a is protected. The protective cover 43 transmits the laser light L emitted from the catheter tip portion 31 a. The protective cover 43 has a cover front end portion 43a and a cover base end portion 43 b. The cover tip portion 43a has a transmission window portion 43 c. The transparent window 43c closes the distal end opening 36 c. The transmission window 43c transmits the laser beam L. The cap base end portion 43b has a base end opening 43Hb into which the hoop arrangement portion 43H of the hoop 36 can be inserted.

The bellows 46 is disposed between the collar 36 and the retaining pin 37. The bellows 46, which is a so-called bellows, is extendable and retractable in the axial direction thereof. The bellows 46 has elasticity to maintain a predetermined length in a state where no external force is applied. For example, when the bellows 46 is pressed in the axial direction, the length of the bellows 46 is contracted. On the other hand, when the pressing is stopped, the length of the bellows 46 returns to the length before the pressing.

The bellows 46 has a bellows tip portion 46a and a bellows base portion 46 b. The bellows tip portion 46a abuts the collar base end portion 36 b. The bellows base end portion 46b abuts the flange portion 41 of the holding plug 37. With this structure, the distance between the base end surface of the hoop base end portion 36b and the tip end surface of the flange portion 41 of the holding plug 37 is maintained constant (see the distance D1 in part (a) of fig. 3). On the other hand, when the holding plug 37 is press-fitted into the ferrule 36, the press-fitting portion 39 of the holding plug 37 is press-fitted into the ferrule 36. In this case, the restoring force of the bellows 46 is also generated. However, the restoring force is smaller than the frictional force between the press-fitting portion 39 and the inner circumferential surface of the ferrule 36. Therefore, the state in which the holding pin 37 is pushed in is maintained (see the interval D2 in part (b) of fig. 3). The bellows 46 may be a tube that does not generate restoring force. In this case, the bellows 46 can maintain the extended state (i.e., the state of the portion (a) of fig. 3) and the contracted state (the state of the portion (b) of fig. 3) without requiring other components, respectively.

That is, the position of the catheter 31 relative to the collar 36 can be switched to the 1 st position or the 2 nd position by the bellows 46 and the holding pin 37. Therefore, the bellows 46 and the holding pin 37 constitute a position adjustment mechanism 47 (position adjustment portion). First, in a state where the holding pin 37 is not pressed into the collar 36, the catheter 31 is held at the 1 st position. In the 1 st position, the catheter distal end portion 31a is disposed on the proximal end side with respect to the hoop distal end portion 36a (see fig. 3 (a)). Here, the distance between the distal end surface of the ferrule distal end portion 36a and the distal end surface of the catheter distal end portion 31a is D3. The interval D3 is obtained by subtracting the interval D2 from the interval D1 (D3 — D1-D2). On the other hand, when the holding pin 37 is pressed into the collar 36, the catheter 31 is held at the 2 nd position. In the 2 nd position, the positions of the hoop tip 36a and the catheter tip 31a coincide with each other (see fig. 3 (b)).

Next, a light intensity measurement method using the light measurement device 1 will be described with reference to a flowchart shown in fig. 4. First, a process of preparing the catheter set 30 will be described.

Step S2 is performed (see section (a) of fig. 5). First, the protective cover 43 (closing part, cover member) is attached to the hoop 36. In step S2, the protective cover 43 is completely covered on the hoop 36. In other words, the front end surface of the ferrule front end portion 36a is brought into contact with the inner surface of the cover front end portion 43 a. In step S2, a gap may be provided between the end surface of the ferrule end portion 36a and the inner surface of the cover end portion 43 a.

Next, step S4 is performed (see section (b) of fig. 5). In step S4, the catheter 31 is housed in the hoop 36. In step S4, the catheter distal end portion 31a and the hoop distal end portion 36a are not aligned with each other. That is, the bellows 46 is disposed between the collar 36 and the holding pin 37. That is, the pipe 31 is housed in the hoop 36 so that the pipe 31 is at the 1 st position. Specifically, the holding pin 37 is attached to the bellows base end portion 46 b. Further, the bellows tip portion 46a is attached to the base end surface of the collar base end portion 36 b. Here, the bellows 46 has a predetermined length in the axial direction thereof. The predetermined length corresponds to, for example, the distance from the distal end surface of the hoop distal end portion 36a to the distal end surface of the catheter distal end portion 31a in the storage state. The sequence of performing step S2 and step S4 may be performed after step S2 to perform step S4 as described above. Further, step S2 may be performed after step S4.

Next, step S6 is performed (see section (c) of fig. 5). In step S6, the catheter set 30 is sterilized. Specifically, first, the catheter set 30 is placed into the sterilization bag 102. The sterilization bag 102 is then sealed. Next, the catheter kit 30 and the sterilization bag 102 are disposed inside a chamber (not shown). Next, the interior of the chamber is degassed. Next, the sterilizing gas G is supplied into the chamber. The sterilization bag 102 is made of vinyl on one surface and is made of nonwoven fabric on the opposite surface. Therefore, even in a state where the sterilization bag 102 is sealed, the sterilization gas G is filled in the bag. As the sterilizing gas G, ethylene oxide gas (EoG) may be mentioned. Then, the conduit set 30 is sterilized by the sterilizing gas G.

However, the conduit 31 is housed within the collar 36. The hoop front end 36a is closed by a protective cover 43. The hoop base end 36b is closed by a holding pin 37 and a bellows 46. Here, the collar 36 has a gas introduction hole 36 e. The sterilizing gas G is introduced into the collar 36 through the gas inlet hole 36 e. Therefore, the conduit 31 housed in the collar 36 can be reliably sterilized through the gas introduction hole 36 e. After filling the chamber with the sterilization gas G, the sterilization gas G is degassed from the chamber.

Through the above steps S2, S4, and S6, the sterilized catheter set 30 is prepared.

Next, a procedure of measuring the catheter set 30 will be described.

First, step S8 is performed (see section (a) of fig. 6). Specifically, the catheter set 30 is removed from the sterilization bag 102. Then, the light source 101 is connected to the fiber base end portion 33b of the optical fiber 33.

Next, step S10 is performed (see section (b) of fig. 6). In step S10, the holding pin 37 is press-fitted into the ferrule 36. That is, the position of the catheter distal end portion 31a is matched with the position of the hoop distal end portion 36 a.

Next, step S12 is performed (see section (a) of fig. 7). First, the conduit set 30 is attached to the power meter 2. More specifically, the adapter 3 is screwed into the mounting portion 7 of the power meter 2. Then, the distal end side (the protective cover 43 side) of the catheter set 30 is inserted into the adapter 3.

Next, step S14 is performed (see section (a) of fig. 7). Specifically, the light source 101 is operated. As a result, the laser beam L is generated. The laser light L passes through the optical fiber 33 and exits from the catheter distal end portion 31 a. The emitted laser light L is incident on the light receiving unit 6. The light receiving unit 6 outputs an electric signal corresponding to the incident laser beam L. The content of the signal is displayed on the processing means 8. Based on the displayed signal content, it is confirmed that the predetermined intensity of the laser light L is obtained.

Next, step S16 is performed (see section (b) of fig. 7). Specifically, the catheter set 30 is extracted from the adapter 3. Next, the holding pin 37 is withdrawn from the ring band 36. As a result, the catheter 31 is removed from the loop 36. Then, in step S18 (not shown), a predetermined treatment or examination is performed using catheter 31.