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)的保护盖(43)。保护盖(43)具有使自导管(31)出射的激光(L)透过的透过窗部(43c)。(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 protective cover (43) provided to the hoop (36). The protective cover (43) has a transmission window (43c) through which the laser light (L) emitted from the catheter (31) is transmitted.)

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 closing part provided at an end of the hoop,

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

2. The catheter kit of claim 1,

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.

3. The catheter kit of claim 1 or 2,

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

4. The catheter kit of claim 1 or 2,

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

5. The catheter kit of any of claims 1-4,

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.

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

the catheter receiving member further has a position adjusting portion provided to the ferrule,

the ferrule includes a ferrule distal end portion as the end portion and a ferrule proximal end portion on the opposite side of the distal end portion,

the position adjusting unit changes a position of a catheter distal end portion from which the light transmitted through the optical fiber is emitted, with respect to the ferrule distal end portion.

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, treatment, and the like 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 closing part provided at an end of the hoop, the closing part having a transmission window part through which light emitted from the guide tube is transmitted.

The conduit set closes the end of the hoop housing the conduit by the closing section. Thus, the leading end of the catheter can be protected. Furthermore, a transparent window is provided in the sealing part. Therefore, the light provided by the optical fiber can be obtained in a state where the catheter is accommodated in the ferrule without taking out the catheter from the ferrule. Therefore, the light intensity can be easily checked while maintaining the cleanliness of the catheter.

The end of the ferrule may have an opening, the end of the ferrule may be provided with a distal end of a guide tube from which light transmitted through the optical fiber is emitted, and the transmission window may close the opening and transmit the light. With this configuration, the light intensity can be measured with the catheter housed in the ferrule. Therefore, the light intensity can be easily checked while maintaining the cleanliness of the catheter.

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. Therefore, the distal end portion of the catheter can be 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.

The catheter housing may further include a position adjusting portion provided to the ferrule, the ferrule including a ferrule distal end portion as an end portion and a ferrule proximal end portion opposite to the distal end portion, the position adjusting portion changing a position of the catheter distal end portion with respect to the ferrule distal end portion, the position of the catheter distal end portion being emitted with light transmitted through the optical fiber. According to this configuration, the position of the distal end of the catheter can be changed during storage and measurement. 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.

ADVANTAGEOUS EFFECTS OF INVENTION

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

Drawings

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

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 embodiment 1.

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 diagram showing a configuration of a light measurement device according to embodiment 2.

Fig. 9 is a flowchart showing the main steps of the light measurement method according to embodiment 2.

Fig. 10 is a diagram for explaining the main steps shown in fig. 9.

Fig. 11 is a diagram for explaining main steps subsequent to the steps shown in fig. 10.

Fig. 12 is a diagram for explaining main steps subsequent to the steps shown in fig. 11.

Fig. 13 is a perspective view showing a cross section of the catheter set according to the modification 1, 2, 3.

Fig. 14 is a side view showing a cross section of a catheter set according to modification 4.

Fig. 15 is a plan view showing a catheter set according to modification 5.

Fig. 16 is a side view showing a cross section of the catheter set according to the modification examples 6, 7, and 8.

Fig. 17 is a perspective view showing a cross section of a catheter set according to modification 9.

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.

< embodiment 1>

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 (closing section, cover member), 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 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.

In the light measurement device 1 according to embodiment 1, the mounting portion 7 defines the position of the collar 36 with respect to the light receiving portion 6. As a result, it is not necessary to remove the catheter 31 from the loop 36 in order to measure the intensity of the laser light L. Then, the intensity of the laser beam L can be measured in a state where the catheter 31 is accommodated in the ferrule 36. As a result, the cleanliness of the duct 31 can be maintained. Again, there is no need to remove catheter 31 from hoop 36. As a result, the process required for measuring the laser beam L can be simplified. Therefore, according to the light measurement device 1, the light intensity can be easily checked while maintaining the cleanliness of the catheter 31.

The catheter set 30 according to embodiment 1 holds the position of the catheter 31 with respect to the hoop 36 by the holding plug 37. With this configuration, when the intensity of the laser beam L is measured, variation in the distance from the catheter distal end portion 31a to the light receiving unit 6 can be suppressed.

Further, the catheter set 30 includes: and a position adjusting mechanism 47 provided at the hoop base end 36b for changing the position of the catheter tip 31a relative to the hoop tip 36a in the extending direction of the hoop 36. With this configuration, the position of the catheter distal end portion 31a during storage and the position of the catheter distal end portion 31a during measurement can be switched. That is, the catheter distal end portion 31a can be disposed on the back side of the hoop distal end portion 36a during storage. As a result, the catheter distal end portion 31a can be protected. Further, the positions of the catheter distal end portion 31a and the hoop distal end portion 36a can be matched at the time of measurement. As a result, variation in the distance from the catheter distal end portion 31a to the light receiving unit 6 can be suppressed.

The holding plug 37 of the catheter set 30 holds the position of the catheter 31 relative to the hoop 36 so that the catheter tip 31a and the hoop tip 36a coincide with each other in the extending direction of the hoop 36. With this structure, the position of the hoop tip 36a is specified. As a result, the position of the catheter distal end portion 31a is specified. Therefore, the variation in the distance from the catheter distal end portion 31a to the light receiving unit 6 can be further suppressed.

The catheter set 30 further includes: and a protective cover 43 attached to the hoop tip end portion 36a and closing the tip opening 36c of the hoop tip end portion 36 a. With this structure, the catheter distal end portion 31a can be protected.

More specifically, the catheter set 30 further includes: a protective cover 43 attached to the hoop 36; and the adapter 3 in which the ferrule 36 to which the protective cover 43 is attached is disposed on the attachment portion 7. The ferrule 36 has a ferrule distal end portion 36a provided with the catheter distal end portion 31a and including a distal end opening 36 c. The protective cover 43 is attached to the hoop front end portion 36 a. The protective cover 43 has: and a cover tip portion 43a including a transmission window portion 43c that closes the tip opening 36c and transmits the laser light L emitted from the optical fiber 33. The adapter 3 has an abutting portion 3c against which the cover front end portion 43a abuts. According to this configuration, the protective cover 43 having the transmission window 43c is disposed between the catheter distal end portion 31a and the light receiving unit 6. The transparent window 43c closes the distal end opening 36c of the ferrule distal end portion 36 a. Therefore, the catheter tip portion 31a can be protected.

In the light measurement method according to embodiment 1, in step S12 of disposing the collar 36 on the mounting portion 7, the position of the collar 36 with respect to the light receiving portion 6 is defined. As a result, it is not necessary to remove the catheter 31 from the loop 36 in order to measure the intensity of the laser light L. Then, in the step S14 of obtaining the intensity of the laser beam L, the intensity of the laser beam L may be measured in a state where the catheter 31 is housed in the ferrule 36. Therefore, the cleanliness of the guide duct 31 can be maintained. Again, there is no need to remove catheter 31 from hoop 36. As a result, the process required for measuring the laser beam L can be simplified. Therefore, according to the light measurement method, the light intensity can be easily checked while maintaining the cleanliness of the catheter 31.

< embodiment 2 >

A light measurement device and a catheter set according to embodiment 2 will be described. As shown in fig. 8, the catheter set 30A according to embodiment 2 is different from the catheter set 30 according to embodiment 1 in that the position adjustment mechanism 47 is not provided. On the other hand, the light measurement device 1 according to embodiment 2 has the same configuration as the light measurement device 1 according to embodiment 1. A light measurement method using the catheter set 30A without the position adjustment mechanism 47 shown in the flowchart of fig. 9 will be described below.

Step S2A (fig. 10 (a)) is performed. First, the protective cover 43 is attached to the hoop 36. In step S2A, the protective cover 43 is not completely covered with the hoop 36. Specifically, the front end surface of the ferrule front end portion 36a does not abut against the inner surface of the cover front end wall 43 d. That is, a predetermined distance D3 is provided between the inner surface of the cover front end wall 43D and the front end surface of the ferrule front end portion 36 a.

Step S4A is performed (see fig. 10 (b)). In step S4A, catheter 31 is housed in hoop 36. In step S2A, the protective cover 43 is attached to the hoop 36 so that a predetermined distance D3 is provided between the protective cover 43 and the hoop 36. Then, in step S4A, the catheter distal end portion 31a is disposed so as to coincide with the hoop distal end portion 36 a. Then, a predetermined distance D3 is also formed between the duct distal end portion 31a and the cover distal end wall 43D. Therefore, the conduit distal end portion 31a is not in contact with the inner surface of the cover distal end wall 43d, and therefore the conduit distal end portion 31a can be protected. The sequence of performing step S2A and step S4A may be performed after step S2A by performing step S4A as described above. Further, step S2A may be performed after step S4A.

Step S6 is performed (see section (c) of fig. 10). The specific step is the same as step S6 in embodiment 1. Next, step S8 is performed (see section (a) of fig. 11). The specific step is the same as step S8 in embodiment 1.

Step S9 is performed (see section (b) of fig. 11). In step S9, the protective cover 43 is press-fitted to the ferrule 36 side. As a result, the inner surface of the cover front end wall 43d abuts against the front end surface of the ferrule front end portion 36 a. In step S9, the position of the catheter distal end portion 31a coincides with the position of the hoop distal end portion 36 a.

The subsequent specific steps are substantially the same as steps S12, S14, S16, and S18 in embodiment 1. In other words, in step S12 (see fig. 12 (a)), the adapter 3 is screwed into the mounting portion 7. Then, the distal end portion of the catheter bundle 30A is inserted into the adapter 3. Next, in step S14 (see section (a) of fig. 12), the light source 101 is operated. As a result, the laser beam L is generated. The intensity of the laser beam L was confirmed. Next, in step S16 (see part (b) of fig. 12), the catheter set 30A is extracted from the adapter 3. Thereafter, catheter 31 is withdrawn from hoop 36. Then, in step S18 (not shown), a predetermined treatment or examination is performed using catheter 31.

The light measurement method according to embodiment 2 can easily perform the light intensity checking operation while maintaining the cleanliness of the catheter 31, as in the light measurement method according to embodiment 1.

The present invention has been described in detail based on the embodiments thereof. However, the present invention is not limited to the above embodiments. The present invention can be variously modified within a range not departing from the gist thereof. For example, the catheter set is not limited to the configurations shown in the above embodiments. The catheter assembly may take on a variety of configurations.

The catheter sets 30 and 30A according to embodiments 1 and 2 have a structure (protective cover 43) for closing the distal end opening 36c of the hoop distal end portion 36 a. The structure for closing the distal end opening 36c may be the structure shown in the following modifications 1, 2, and 3.

< modification 1>

As shown in part (a) of fig. 13, a catheter set 30C according to modification 1 includes a protective cover 48. The protective cap 48 may also be provided to be removable with respect to the collar 36. The protective cover 48 may be fixed to the hoop 36 with an adhesive or the like so as not to be detached from the hoop 36. The protective cover 48 is formed of a material transparent to the laser light L. The protective cover 48 has a cover main body portion 48a and a flange portion 48 b. The cap body 48a has a cylindrical shape. The cover body portion 48a is fitted to the ferrule distal end portion 36 a. The flange portion 48b is provided on the front end side of the lid main body portion 48 a. The flange portion 48b has a disc shape. The flange portion 48b has a diameter substantially equal to the diameter of the outer peripheral surface of the collar 36. That is, the diameter of the flange portion 48b is larger than the inner diameter of the distal end opening 36 c. According to this structure. The base end surface of the flange portion 48b abuts against the tip end surface of the ferrule tip portion 36 a. As a result, the insertion depth of the protective cover 48 can be specified.

The protective cover 48 has a catheter arrangement portion 48c that defines the position of the catheter tip portion 31 a. Catheter placement portion 48c has a central axis A31 of catheter 31 along central axis A36 of collar 36. In other words, the catheter arranging portion 48c defines the position of the catheter distal end portion 31a in the diametrical direction of the ferrule 36. The conduit arrangement portion 48c also defines the direction of the conduit 31 (i.e., the emission direction of the laser light L) as a predetermined direction. With such a catheter arrangement portion 48c, the position and posture of the catheter tip portion 31a with respect to the light receiving unit 6 can be accurately defined. Therefore, a light intensity value with good accuracy can be obtained. In addition, the variation of light intensity per measurement can be suppressed.

The conduit arrangement portion 48c is a tapered hole and extends from the base end surface of the cap main body portion 48a toward the flange portion 48 b. The diameter of the conduit arrangement portion 48c gradually decreases toward the flange portion 48 b. The conduit arrangement portion 48c has a base end opening 48d provided in the base end surface and a bottom portion 48e provided on the flange portion 48b side. The base end opening 48d has an inner diameter larger than the outer diameter of the guide tube 31. Again, the inner diameter of base end opening 48d is slightly smaller than the inner diameter of collar 36. The diameter of the bottom portion 48e is smaller than the outer diameter of the guide tube 31. Therefore, the front end surface of the pipe front end portion 31a does not contact the bottom portion 48 e. According to such a catheter arrangement portion 48c, when the catheter 31 is inserted into the ferrule 36 from the proximal end side to the distal end side, the catheter distal end portion 31a can be appropriately guided to the catheter arrangement portion 48 c. In the case of using the protective cover 48, the distal end surface of the catheter distal end portion 31a does not protrude from the distal end surface of the ferrule distal end portion 36 a. Therefore, the position of the catheter distal end portion 31a in the emission direction of the laser light L is specified.

According to the protective cover 48, the laser light L passes through the cover main body portion 48a and the flange portion 48b and enters the light receiving portion 6. Specifically, the catheter arrangement portion 48c may be shaped such that the optical axis of the laser beam L intersects the tapered surface of the catheter arrangement portion 48c (see arrow W1). The shape of the conduit-disposing part 48c may be such that the optical axis of the laser beam L does not intersect the tapered surface. That is, the shape of the conduit-disposing part 48c may be such that the optical axis of the laser beam L intersects the bottom part 48e (see arrow W2).

< modification 2 >

As shown in part (b) of fig. 13, the catheter set 30D according to modification 2 may restrict the position of the catheter distal end portion 31a as in the catheter set 30C of modification 1.

The catheter kit 30D has a protective cover 49. The protective cap 49 may be provided to be detachable from the hoop 36. The protective cap 49 may also be fixed relative to the collar 36 in a non-removable manner, by an adhesive or the like. The protective cover 49 has a main body tube portion 49a and a tapered tube portion 49 b. The main body tube portion 49a is a tubular member covering the hoop tip end portion 36 a. The inner diameter of the body tube portion 49a is substantially the same as the outer diameter of the hoop 36 or slightly smaller than the outer diameter of the hoop 36. The tapered tube portion 49b is provided on the distal end side of the main body tube portion 49 a. The tapered tube portion 49b has a tapered ladder shape. The tapered tube portion 49b has an outer diameter gradually decreasing from a portion continuous with the main tube portion 49a toward the distal end side. The tapered tube portion 49b has a tapered hole. The inner diameter of the tapered hole becomes gradually smaller toward the front end. The tapered hole is a conduit-disposing portion 49 c.

The conduit-disposing part 49c is a tapered hole. A tapered hole extends from the boundary between the main body tube portion 49a and the tapered tube portion 49b to the front end. The diameter of the conduit-disposing part 49c becomes gradually smaller toward the front end. The conduit arrangement portion 49c has a base end opening 49d and a tip end bottom portion 49 e. The inner diameter of the base end opening 49d is substantially the same as the outer diameter of the hoop 36. The diameter of the leading end bottom 49e is smaller than the outer diameter of the guide tube 31. Therefore, the tip end surface of the conduit tip portion 31a does not contact the tip end bottom portion 49 e. According to such a catheter arrangement portion 49c, when the catheter 31 is inserted into the ferrule 36 from the proximal end side to the distal end side, the catheter distal end portion 31a can be appropriately guided to the catheter arrangement portion 49 c. In the case of using the protective cover 49, the distal end surface of the catheter distal end portion 31a protrudes from the distal end surface of the ferrule distal end portion 36 a. With this configuration, the catheter distal end portion 31a can be brought close to the light receiving unit 6 while protecting the catheter distal end portion 31 a.

According to the protective cover 49, the laser light L passes through the tapered tube portion 49b and is incident on the light receiving unit 6. Specifically, the catheter arrangement portion 49c has a shape in which the optical axis of the laser beam L intersects the distal end bottom portion 49e without intersecting the tapered surface (see arrow W3). The shape of the conduit-disposing part 49c may be such that the optical axis of the laser beam L intersects with the tapered surface.

< modification 3 >

As shown in part (c) of fig. 13, the catheter set 30E according to modification 3 includes a protective cover 51. The protective cover 51 has a disc shape. The protective cover 51 has an outer peripheral surface 51a, a distal end surface 51b, and a proximal end surface 51 c. The outer diameter of the protective cover 51 is substantially equal to the inner diameter of the collar 36. The protective cover 51 is fitted into the front end opening 36c of the ferrule front end 36 a. The front end surface 51b of the protective cover 51 is exposed to the outside. The proximal end surface 51c of the protective cover 51 faces the inside of the collar 36. That is, the catheter distal end portion 31a faces the proximal end surface 51 c. The laser light L emitted from the catheter distal end portion 31a passes through the protective cover 51 and then enters the light receiving unit 6. Therefore, the protective cover 51 is formed of a material transparent to the laser light L.

The protective cover 51 is fixed to the ferrule 36 by an adhesive or the like so as not to be detached. That is, the protective cover 51 is integrated with the ferrule 36. Specifically, the outer peripheral surface 51a of the protective cover 51 is fixed to the inner peripheral surface of the ferrule 36 with an adhesive or the like. With this structure, the protective cover 51 is not detached from the ferrule 36. Therefore, the catheter distal end portion 31a can be reliably protected.

The catheter set 30 according to embodiment 1 includes a position adjustment mechanism 47 for switching the position of the catheter 31 with respect to the hoop 36. The specific configuration of the position adjustment mechanism may be as shown in modifications 4 and 5 below.

< modification 4>

As shown in fig. 14, a catheter set 30J according to modification 4 includes a position adjustment mechanism 59 having a configuration different from that of embodiment 3. The position adjustment mechanism 59 is a tube 59a formed of silicone rubber or the like. The tube 59a is disposed between the collar 36 and the retaining pin 61. The tube 59a maintains and changes the interval between the ferrule base end portion 36b and the retaining plug distal end surface 61 a.

The hoop base end portion 36b is inserted into the tube tip end portion 59 b. The press-fitting portion 61b of the holding pin 61 is inserted into the tube proximal end portion 59 c. In other words, the position adjusting mechanism 59 has a double-layer structure formed by the tube 59a and the collar 36. Here, the tube base end portion 59c is fixed with respect to the holding peg 61. On the other hand, the tube distal end portion 59b is slidable with respect to the hoop base end portion 36 b. Such a configuration can be realized by setting the inner diameter of the tube distal end portion 59b and the outer diameter of the hoop proximal end portion 36b to predetermined dimension values.

As shown in fig. 14 (a), when the catheter kit 30J and the like are stored, the tube 59a maintains a predetermined interval between the hoop proximal end portion 36b and the retaining plug distal end surface 61 a. At this time, the catheter distal end portion 31a is disposed on the proximal end side (position 1) with a space from the hoop distal end portion 36 a. That is, the catheter distal end portion 31a is protected by the hoop 36.

As shown in fig. 14 (b), when the laser light L is measured using the catheter kit 30J, the holding plug 61 is pushed toward the distal end side. Then, a slide is generated between the tube tip portion 59b and the hoop base end portion 36 b. As a result, the tube 59a and the holding pin 61 move toward the distal end side as a unit. That is, the distance between the ferrule base end portion 36b and the holding plug distal end surface 61a is reduced. Then, the retaining pin distal end surface 61a finally comes into contact with the ferrule base end portion 36 b. At this time, the position of the catheter distal end portion 31a coincides with the position of the hoop distal end portion 36 a. That is, the catheter distal end portion 31a is disposed at a position (position 2) suitable for measuring the intensity of light.

< modification 5>

As shown in fig. 15, the catheter set 30K according to modification 5 may further include a position adjustment mechanism 62 having another configuration. The position adjustment mechanism 62 is constituted by a guide pin 62a and a guide groove 62 b. The guide pin 62a and the guide groove 62b reliably switch between a state in which the guide tube tip portion 31a is protected and a state in which the laser light L is measured using the guide tube nest 30K. Further, the position adjustment mechanisms 62 can reliably maintain their respective states. The catheter kit 30K has a tube 63. The pipe 63 is disposed between the collar 64 and the holding pin 65. That is, the position adjustment mechanism 62 according to modification 5 has a so-called double-layer structure, as with the position adjustment mechanism 62 according to modification 4.

For example, the guide groove 62b is provided on the outer peripheral surface of the hoop base end portion 64 a. The guide groove 62b may also extend through the side wall of the collar 64. In addition, the guide groove 62b may have a bottom shape. The guide groove 62b includes a 1 st regulating portion 62c and a 2 nd regulating portion 62d extending in the circumferential direction, and a coupling groove portion 62e extending in the axial direction. One end of the 1 st regulating portion 62c and one end of the 2 nd regulating portion 62d are coupled by a coupling groove portion 62 e. The coupling groove portion 62e extends in the axial direction of the ferrule 64. The 1 st restriction portion 62c is provided on the hoop proximal end surface side. The 2 nd limiting portion 62d is provided on the tip side of the 1 st limiting portion 62 c. The distance from the 1 st restriction part 62c to the 2 nd restriction part 62d corresponds to the moving distance of the guide pipe 31. The guide pin 62a is provided on the inner peripheral surface of the tube 63. The guide pin 62a is a cylindrical protrusion. The guide pin 62a extends from the inner peripheral surface in the radial direction of the pipe 63. The guide pin 62a has a diameter substantially the same as the guide groove 62b or slightly smaller than the guide groove 62 b.

As shown in part (a) of fig. 15, when storing the catheter sheath set 30K, the guide pin 62a is fitted into the 1 st restriction part 62 c. When the guide pin 62a is fitted into the 1 st restriction part 62c, the catheter tip portion 31a is in a protected state disposed on the back side (the 1 st position) of the ferrule 64. The 1 st restriction portion 62c extends in the circumferential direction. As a result, the guide pin 62a does not move in the axial direction. Therefore, since the catheter distal end portion 31a is disposed on the back side of the hoop 64, the protected state can be reliably maintained.

Next, the switching operation will be described. As shown in fig. 15 (b), first, the tube 63 is rotated in the direction in which the 1 st regulating portion 62c extends. Then, the guide pin 62a moves to the base end portion of the coupling groove portion 62 e. Then, the guide pin 62a is moved along the coupling groove portion 62 e. That is, the tube 63 and the holding pin 65 are moved toward the distal end side. By this movement, the catheter distal end portion 31a coincides with the hoop distal end portion 36 a. Then, the guide pin 62a is moved to the front end of the coupling groove portion 62e, and then the pipe 63 is rotated in the circumferential direction. Then, the guide pin 62a is fitted into the 2 nd restriction portion 62 d. When the guide pin 62a is fitted into the 2 nd restriction portion 62d, the catheter tip portion 31a is in a measurement state in which it coincides with the ferrule tip portion 36a (2 nd position). The 2 nd regulating portion 62d extends in the circumferential direction, like the 1 st regulating portion 62 c. As a result, the guide pin 62a does not move in the axial direction. Therefore, the state in which the catheter distal end portion 31a is disposed at the hoop distal end portion 36a can be reliably maintained.

The catheter set 30 according to embodiment 1 includes a mechanism for holding the position of the catheter 31 with respect to the hoop 36. The specific configuration of this mechanism may be as shown in modifications 6, 7, and 8 below.

< modification 6>

As shown in part (a) of fig. 16, the catheter set 30L according to modification 6 may include a jig 66 as a mechanism for holding the position of the catheter 31. The jig 66 is attached to the hoop base end portion 36 b. The clamp 66 generates a force that radially compresses the hoop 36. When the hoop 36 is pressed in the radial direction, the inner circumferential surface of the hoop 36 is pressed against the outer circumferential surface of the pipe 31. The clamp 66 is mounted in a manner to clamp the collar 36 from the radial direction. Thus, the side wall of the hoop 36, which is pressed by the clamp 66, holds the conduit 31. With this configuration, the position of catheter 31 relative to hoop 36 is maintained. When moving the hoop 36, the jig 66 is removed. The holding mechanism using the jig 66 can easily switch between a state in which the catheter 31 is held and a state in which the catheter can be moved.

< modification 7>

As shown in part (b) of fig. 16, the catheter set 30P according to modification 7 may include a tube 67 as a holding mechanism. This structure is similar to that of modification 4. I.e. a two-layer construction. The structure of modification 4 is different in that the tube distal end portion 67a is configured to be less likely to slide relative to the hoop proximal end portion 36 b. In modification 7, the inner diameter of the pipe 63 is smaller than the outer diameter of the hoop 36. As a result, the ferrule 36 is inserted into the tube 36, and is pressed into the state.

< modification 8>

As shown in part (c) of fig. 16, the catheter set 30Q according to modification 8 may include a holder 68 as a holding mechanism. The clamp 68 is a U-shaped member to which the catheter proximal end portion 31b can be attached and detached. The clamp 68 includes a fixing portion 69 fixed to the outer peripheral surface of the hoop 36. The catheter base end portion 31b is inserted from the opening of the jig 68 in the radial direction. As a result, the catheter proximal end portion 31b is fixed to the jig 68. Then, the clamp 68 is fixed to the hoop 36 by the fixing portion 69. Thus, catheter 31 is retained relative to hoop 36.

The catheter set 30 according to embodiment 1 includes a protective cover 48 attached to the hoop tip 36a during storage. The structure of the protective catheter tip portion 31a arranged to coincide with the hoop tip portion 36a may be the structure shown in modification 9 below.

< modification 9>

As shown in fig. 17 (a) and (b), the catheter set 30S according to modification 9 has a protective cover 72. The protective cover 72 has a structure similar to that of the protective cover 72 of modification 2. The difference from the protective cover 49 of modification 2 is that the protective cover 72 of modification 12 is movable relative to the hoop 36.

As shown in fig. 17 (a), when the catheter kit 30S is stored, the protective cover 72 can be shallow covered on the hoop tip 36 a. According to this structure, a gap is provided between the cover distal end portion 72a of the protective cover 72 and the catheter distal end portion 31 a. Therefore, the catheter distal end portion 31a can be suitably protected.

On the other hand, as shown in part (b) of fig. 17, when the measurement is performed by the laser light L using the catheter set 30S, the protective cover 72 is inserted to the hoop 36 side. By this insertion, the gap between the cover distal end portion 72a and the catheter distal end portion 31a is reduced. When the protective cover 72 and the hoop 36 are regarded as one hoop member, the relative position of the catheter distal end portion 31a and the hoop member is changed by the protective cover 72. Therefore, the protective cover 72 can also be defined as a position adjustment mechanism in a broad sense. Further, the catheter distal end portion 31a is guided along the tapered inner peripheral surface of the protective cover 72. As a result of this guidance, the central axis a31 of catheter 31 is along the central axis a36 of hoop 36. Therefore, variations in the position and posture of the catheter tip portion 31a from which the laser light L is emitted are suppressed. As a result, the light intensity can be measured with high accuracy.

Further, the catheter set may be freely combined with modifications 1, 2, 3, and 9 relating to the tip shape, modifications 4 and 5 relating to the position adjusting mechanism, and modifications 6, 7, and 8 relating to the holding mechanism, according to the conditions required for the catheter set.

Description of the symbols

1 … light measurement device, 2 … power meter, 3 … adapter, 3B … adapter base end face, 3H … ferrule arrangement portion, 3Hb … base end opening, 4 … housing, 6 … light receiving portion, 7 … mounting portion, 7a … rising tube portion, 7B … mounting end face, 7H … adapter arrangement portion, 7Ha … tip end opening, 7Hb … base end opening, 8 … processing device, 9 … adapter main body, 11 … adapter flange, 30A, 30B, 30C, 30D, 30E, 30J, 30K, 30L, 30P, 30Q, 30S … catheter set, 31 … catheter, 31a … catheter tip portion, 31B … catheter base end portion, 32 … catheter housing, 33 … optical fiber, 33a … optical fiber tip portion, 33B … optical fiber, 3634 base end portion, … constituent, ferrule …, 36a …, 36B …, 36C ferrule …, … tip end opening, …, and 7B … mounting end face, 36d base end opening, 36e gas introduction hole, 37 holding plug, 38 conduit arrangement part, 39 press-fitting part, 41 flange part, 43 protection cover, 43a cover tip part, 43b cover base end part, 43d cover tip wall, 43c transmission window part, 43H hoop arrangement part, 43Hb base end opening, 46 bellows, 46a bellows tip part, 46b bellows base end part, 47 position adjustment mechanism, 48 protection cover, 48a cover body part, 48b flange part, 48c conduit arrangement part, 48d base end opening, 48e bottom part, 49 protection cover, 49a main body tube part, 49b cone part, 49c conduit arrangement part, 49d base end opening, 49e tip bottom part, 51 protection cover part, 51a outer peripheral surface, 51b tip surface, 51c base surface, 59 position adjustment mechanism, 59a … tube, 59b … tube tip, 59c … tube base, 61 … holding pin, 61a … holding pin tip, 61b … press-in portion, 62 … position adjusting mechanism, 62a … guide pin, 62b … guide groove, 62c … 1 st regulating portion, 62d … 2 nd regulating portion, 62e … coupling groove, 63 … tube, 64 … hoop, 64a … hoop base, 65 … holding pin, 66 … clamp, 67 … tube, 67a … tube tip, 68 … clamp, 69 … fixing portion, 72 … protective cover, 72a … cover tip, 102 … sterilization bag, 101 … light source, L … laser, G … sterilization gas.