JP6958971B2 - Medical clip - Google Patents

Description

The present invention relates to a medical clip that holds a tubular medical device.

Conventionally, a flexible medical clip having a tubular shape and being configured to hold a tubular medical device on its inner peripheral surface has been known (see Patent Document 1). As an example of such a medical clip (hereinafter, also simply referred to as “clip”), the clip 610 shown in FIG. 14 can be mentioned. The clip 610 is provided with an opening 614 that is open along the axial direction from one end to the other end in the axial direction (y-axis direction) in a part of the circumferential direction. The length of the opening 614 in the width direction (x-axis direction) is shorter than the maximum value in the width direction of the inner peripheral surface of the clip 610.

Japanese Unexamined Patent Publication No. 2016-112201

The portion of the medical device that will be held by the clip 610 usually has an outer diameter that is greater than the widthwise length of the opening 614 of the clip 610. When fitting the medical device into the clip 610, the medical device is arranged in the opening 614 of the clip 610 so that the axial direction of the medical device substantially coincides with the axial direction of the opening 614, and the medical device is arranged from the opening 614 to the clip 610. An inward force (a force in the −z axis in FIG. 14) is applied to the medical device. As a result, the clip 610 bends and the medical device is fitted into the clip 610.

On the other hand, when removing the medical device from the clip 610, hold the clip 610 with one hand and use the other hand to force the clip 610 outward from the opening 614 (force in the + z-axis direction in FIG. 14). To the medical device. This force is usually applied to a portion of the medical device located near the opening 614. This causes the clip 610 to bend and the medical device to be removed from the clip 610. As described above, the outer diameter of the portion of the medical device held by the clip 610 is larger than the widthwise length of the opening 614 of the clip 610. Therefore, when the medical device is removed from the clip 610, a resistance force is generated at the contact portion between the opening 614 and the medical device. Therefore, in order to remove the medical device from the clip 610 by applying a force to the portion of the medical device located near the opening 614, it is necessary to apply a force exceeding this resistance force to the medical device. In this case, if the resistance is relatively large, the medical device cannot be easily removed from the clip 610. In addition, excessive force may be applied to the medical device during removal, which may deform the medical device.

The present invention has been made to address the above-mentioned problems. That is, one of the objects of the present invention is to provide a medical clip in which a tubular medical device can be easily removed from the medical clip.

In one aspect of the medical clip of the invention,
A flexible first holding portion (18) having a tubular shape and configured to hold a tubular medical device (40) on its inner peripheral surface, and the first holding portion (18). A fulcrum portion (20) having a contact portion (P3) capable of contacting the held medical device (40) is provided.
The first holding portion (18) has an opening (14) that is open along the axial direction from one end (E1) to the other end (E2) in the axial direction in a part thereof in the circumferential direction. The width direction length (D1) of the opening (14) is shorter than the maximum width direction length (D2) of the inner peripheral surface of the first holding portion (18).
At least a part (P3) of the contact portion of the fulcrum portion (20) goes from the other end (E2) of the first holding portion (18) toward the one end (E1) along the axial direction. The position is separated by a predetermined first distance (d1) in the direction opposite to the direction (+ y-axis direction), and the central axis (Y1) is separated from the central axis (Y1) of the first holding portion (18). ) To the center of the opening (14) in the width direction, which is the direction opposite to the first direction (+ z-axis direction), and a predetermined second distance (-z-axis direction). It is located at a position separated by d2).

The medical clip of the present invention includes a fulcrum portion having a contact portion capable of contacting a medical device held by the first holding portion. This contact portion is located at a position separated by the first distance from the other end of the first holding portion in the direction opposite to the direction toward one end along the axial direction, and is second from the central axis of the first holding portion. It is located at a position separated by a second distance in the direction (the direction opposite to the first direction, which is the direction from the central axis of the first holding portion toward the center in the width direction of the opening). Therefore, when a force in the first direction is applied to the portion of the medical device opposite to the side where the fulcrum is located with respect to the first holding portion, the side of the medical device where the fulcrum is located with respect to the first holding portion is applied. Part moves in the second direction and comes into contact with the contact portion of the fulcrum portion. When further force is applied, the contact part functions as a fulcrum, the position where the force is applied functions as a force point, and the contact part between the opening and the medical device functions as an action point. Compared with the case where the medical device is removed from the first holding portion by applying a force to the portion located near the point of action, the medical device can be removed from the first holding portion with a remarkably small force. Therefore, according to the configuration of the present invention, the medical device can be easily removed from the medical clip with a slight force. Further, since it is suppressed that an excessive force is applied to the medical device, the possibility that the medical device is deformed at the time of removal can be significantly reduced. In the following, "applying a force in the first direction to the portion of the medical device opposite to the side where the fulcrum is located with respect to the first holding portion" simply means "applying a force to a predetermined position of the medical device". "Add" may be described.

Here, the "contact portion capable of contacting the medical device held in the first holding portion" is only "a configuration in which the medical device comes into contact with the contact portion in the process of removing the medical device from the first holding portion". However, it also includes "a configuration in which the medical device is in contact with the contact portion while the medical device is held by the first holding portion". In the latter configuration, when a force in the first direction is applied to the portion of the medical device opposite to the side where the fulcrum is located with respect to the first holding portion, the force is applied with the contact portion as the fulcrum at that time. The designated position functions as a point of effort, and the contact portion between the opening and the medical device functions as a point of action.

Further, in this configuration, the contact portion is located on the second direction side with respect to the central axis of the first holding portion. Here, if the contact portion is located on the first direction side of the central axis of the first holding portion, the medical instrument comes into contact with the contact portion while the medical instrument is held by the first holding portion. , The inclination is relatively large in the second direction from the contact portion toward the first holding portion. If a force is applied to a predetermined position of the medical device in order to remove the medical device from the first holding portion in this state, a relatively large bending stress is applied to the medical device at the fulcrum, and the medical device is deformed. there is a possibility. On the other hand, according to the configuration of the present invention, when the medical device is held by the first holding portion, it is possible to prevent the medical device from tilting in the second direction from the contact portion toward the first holding portion. (Because even if it is tilted in the second direction, it can be suppressed to a slight tilt), the possibility that the medical device is deformed when the medical device is removed from the first holding portion can be further reduced.

In one aspect of the medical clip of the invention,
The fulcrum portion (20) has a base portion (19) and a protruding portion (16) protruding from the base portion (19) in the first direction (+ z-axis direction).
The contact portion (P3) is located at the end of the protrusion (16) on the first direction side (+ z axis direction side).
The end portion is located on the second direction side (-z axis direction side) of the first holding portion (18) with respect to the central axis (Y1).

In this configuration, the fulcrum portion has a protruding portion, and the contact portion is located at the end portion on the first direction side of the protruding portion (hereinafter, also simply referred to as “the end portion of the protruding portion”). Therefore, when the medical device is held by the first holding portion and the medical device is not in contact with the end of the protruding portion (there is a clearance between the medical device and the end), the fulcrum is used. Compared to the configuration in which the portion does not have a protruding portion, when a force is applied to a predetermined position of the medical device, the moving distance (rotation angle) until the medical device comes into contact with the contact portion becomes shorter (smaller). .. Therefore, the bending stress acting on the medical device at the fulcrum can be reduced, and the load applied to the medical device when the medical device is removed from the first holding portion can be further reduced. In addition, the removal operation when removing the medical device from the first holding portion can be further simplified, and as a result, the medical device can be more easily removed from the first holding portion.

One aspect of the medical clip of the present invention is
Further, a connecting portion (22) for connecting the first holding portion (18) and the fulcrum portion (20) is provided.

According to this configuration, the rigidity of the fulcrum portion is improved. In other words, a force is applied to a predetermined position of the medical device, and the part of the medical device on the side where the fulcrum portion is located with respect to the first holding portion contacts the contact portion of the fulcrum portion and is in the second direction to the fulcrum portion. When a force is applied, the possibility that the fulcrum portion is elastically deformed in the second direction can be reduced. Therefore, the function as a fulcrum is improved, and as a result, the medical device can be removed from the first holding portion with a smaller force.

In one aspect of the medical clip of the invention,
The connecting portion (22) extends along the axial direction of the first holding portion (18).

According to this configuration, the same effect as the above effect (that is, the effect of improving the rigidity of the fulcrum portion) can be obtained. In addition, according to this configuration, when the medical device is held by the first holding portion, a part of the peripheral direction of the medical device faces the connecting portion in the axial direction. As a result, in the portion of the medical device facing the connecting portion, the connecting portion can protect the medical device from an external impact. That is, the connection can act as a cover that protects the medical device.

One aspect of the medical clip of the present invention is
Further, a second holding portion having a cylindrical shape and an arm portion connecting the first holding portion and the second holding portion are provided.
The medical device has a tubular connector portion and a main body portion that is connected to one end of the connector portion and can be stored in a storage device having a lumen.
The first holding portion is configured to hold the connector portion of the medical device on its inner peripheral surface.
The second holding portion is configured to hold the storage device in which the main body portion of the medical device is housed on its inner peripheral surface.

According to this configuration, the medical clip can hold the medical device and the storage device stored in the storage device. Further, when the position of the second holding portion is fixed while the second holding portion holds a specific portion of the storage tool, the position of the first holding portion is also fixed. Therefore, the displacement of the first holding portion can be prevented. Therefore, the medical device (connector portion) can be stably held. Further, when the medical device and the storage device are held by the medical clip in the wound state, the medical device and the storage device are held as compared with the configuration in which the medical device and the storage device are held in the unwound state. Can be held more compactly.

In the above description, in order to help the understanding of the invention, the reference numerals used in the embodiments are attached in parentheses to the constituent elements of the invention corresponding to the embodiment. It is not limited to the embodiment defined by.

The medical clip according to the embodiment of the present invention shows a state in which the catheter and the holder housed in the holder are held in a wound state. The schematic diagram of the catheter is shown. The perspective view of the medical clip is shown. The plan view of the medical clip is shown. The front view when the connector holding part of the medical clip is seen from the holding part side is shown. The side sectional view of the connector holding part of the medical clip is shown. Place the medical clip on one side in the axial direction of the holder holding part of the medical clip (when the medical clip is placed so that the lower surface of the holder holding part is located downward, the connector holding part is on the right side of the holder holding part. The front view is shown when viewed from the direction (direction such as located in). The figure explaining the method of removing the protector part of the connector part of a catheter from the connector holding part of a medical clip is shown. The perspective view of the connector holding part of the medical clip which concerns on the modification 1 of this invention is shown. The perspective view of the connector holding part of the medical clip which concerns on modification 2 of this invention is shown. The perspective view of the connector holding part of the medical clip which concerns on modification 3 of this invention is shown. The perspective view of the connector holding part of the medical clip which concerns on the modification 4 of this invention is shown. The plan view of the medical clip which concerns on the modification 5 of this invention is shown. A perspective view of a conventional medical clip is shown.

(Embodiment)
Hereinafter, the medical clip (hereinafter, also simply referred to as “clip”) 10 according to the embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the catheter 40 is wound together with the holder 60 in a state where a part of the catheter 40 is housed in the holder 60. The clip 10 is used to hold the catheter 40 and the holder 60 housed in the holder 60 in a state in which the catheter 40 and the holder 60 are wound (hereinafter, the state is also referred to as a "wound state"). .. Therefore, first, the catheter 40 and the holder 60, which are the holding targets of the clip 10, will be described, and then the clip 10 will be described.

A catheter is a known flexible medical device, which is inserted into a lumen such as a blood vessel, a digestive tract, and a urinary tract, and an internal tissue such as a thoracic cavity and an abdominal cavity, and a stent, an embolizing coil, or the like is used as a lesion of a blood vessel. It is used for the purpose of transporting to a part, injecting a drug solution or a contrast medium, or draining a body fluid. The catheter 40 of the present embodiment is a catheter for inserting a blood vessel. As shown in FIG. 2, the catheter 40 includes a shaft portion 42, a connector portion 44 connected to the proximal end of the shaft portion 42, and a tip portion 50 connected to the distal end of the shaft portion 42. ..

The shaft portion 42 is a long member provided with a lumen. The connector portion 44 is composed of a hub portion 46 and a protector portion 48 located at the distal end of the hub portion 46, and the inside of the hub portion 46 and the protector portion 48 communicates with the lumen of the shaft portion 42. A hole is provided. The hub portion 46 is a connecting member that connects various devices (for example, a three-way stopcock, a Y connector, etc.) to the shaft portion 42 via the protector portion 48. The protector portion 48 is a protective member that protects and reinforces the connection portion between the hub portion 46 and the shaft portion 42. The protector portion 48 has a first portion 48a whose outer diameter is constant in the axial direction, and a second portion 48b located at the distal end of the first portion 48a and whose diameter is reduced in the distal direction. .. The tip portion 50 is a member that improves the flexibility of the distal end portion of the catheter 40. Inside the tip portion 50, a communication hole that communicates with the lumen of the shaft portion 42 is provided. Although the catheter 40 for inserting a blood vessel is illustrated in this embodiment, the use of the catheter is not limited to this, and any catheter having a connector portion corresponding to the connector portion 44 may be used.

The holder is a known storage tool that has flexibility and is used for storing catheters. The holder 60 of the present embodiment is provided with a lumen having an inner diameter larger than the outer diameter of the shaft portion 42 and the tip portion 50 of the catheter 40, and the axial length thereof is the shaft portion 42 of the catheter 40 and the tip portion 50. It is longer than the axial length of the tip portion 50. While the shaft portion 42 and the tip portion 50 (not shown in FIG. 1) of the catheter 40 are housed in the holder 60, the connector part 44 is not housed and is arranged outside the holder 60 (see FIG. 1). The holder 60 protects the shaft portion 42 and the tip portion 50 of the catheter 40 from external impact. The shaft portion 42 and the tip portion 50 correspond to an example of the “main body portion of the medical device”.

As shown in FIGS. 3 and 4, the clip 10 includes a connector holding portion 12, a holder holding portion 24, and an arm portion 30 that connects the connector holding portion 12 and the holder holding portion 24. As shown in FIG. 1, the connector holding portion 12 is configured to hold the connector portion 44 of the wound catheter 40, and the holder holding portion 24 is configured to hold the wound holder 60.

First, the connector holding portion 12 will be described with reference to FIGS. 3 to 6. As shown in FIGS. 3 and 4, the connector holding portion 12 has a portion A to which the arm portion 30 is connected and has flexibility, and a portion B connected to the portion A. The portion A has a substantially cylindrical shape, and an opening 14 that opens upward (in the + z-axis direction) is formed in a part in the circumferential direction thereof. As shown in FIG. 4, the opening 14 is opened along the axial direction from one end E1 to the other end E2 in the axial direction (y-axis direction) of the portion A, and has a length in the width direction (x-axis direction) thereof. The length is constant over the axial direction. The opening 14 is formed so as to be line-symmetrical with respect to the axial direction when the connector holding portion 12 is viewed in a plan view. Further, as shown in FIG. 5, the length D1 in the width direction of the opening 14 is shorter than the maximum value D2 (that is, the diameter of the inner peripheral surface) of the length in the width direction of the inner peripheral surface of the portion A. In addition, the + z-axis direction is, in other words, a direction from the central axis Y1 (see FIG. 5) of the portion A toward the center in the width direction of the opening 14, and corresponds to an example of the “first direction”.

As shown in FIG. 4, the portion B is connected to the other end E2 (end face on the + y-axis direction side) of the portion A. As shown in FIGS. 3, 4 and 6, the portion B has a shape in which a part of the portion A in the circumferential direction extends in the + y-axis direction and is partially processed (described later). Therefore, the central axis of the portion B coincides with the central axis Y1 of the portion A (see FIG. 5). As shown in FIG. 4, the portion B is formed so as to be line-symmetrical with respect to the axial direction when the connector holding portion 12 is viewed in a plan view.

As shown in FIGS. 4 and 6, the portion B has a base 19 and a protrusion 16. The base portion 19 is a portion corresponding to the end portion of the portion B in the + y-axis direction. The protruding portion 16 is formed on the inner peripheral surface of the base portion 19. The protruding portion 16 is separated from the other end E2 of the portion A by a distance d1 in the + y-axis direction (in other words, the direction opposite to the direction from the other end E2 toward one end E1 along the axial direction) (FIG. 4) is formed along the circumferential direction of the inner peripheral surface (see FIG. 5). The protruding portion 16 is line-symmetrical with respect to the axial direction when the connector holding portion 12 is viewed in a plan view, and the length in the axial direction is constant over the circumferential direction (see FIG. 4). As shown in FIG. 5, the protruding portion 16 projects radially inward toward the central axis Y1 of the portion B, and its height (length in the radial direction) is equal over the circumferential direction. Further, among the upper ends of the protruding portion 16, the upper end located at the center in the width direction is located below the central axis Y1 of the portion B (in the −z axis direction) and at a position separated by a distance d2. The distance d1 corresponds to an example of the "first distance". Further, the −z axis direction corresponds to an example of the “second direction”, and the distance d2 corresponds to an example of the “second distance”. Further, the upper end surface of the protruding portion 16 corresponds to an example of the "contact portion".

As shown in FIG. 6, the height (length in the z-axis direction) of the portion B in the lateral cross-sectional view of the connector holding portion 12 is constant from the other end E2 of the portion A to the vicinity of the protruding portion 16 and protrudes. The height gradually decreases from the vicinity of the portion 16 to the tip of the portion B (the end face in the + y-axis direction), and at the tip of the portion B, the thickness (length in the radial direction) of the portion B is substantially equal to that of the portion B. Further, as shown in FIG. 4, the outer shape of the portion B when the connector holding portion 12 is viewed in a plan view gradually becomes thinner from the other end E2 of the portion A to the position where the protruding portion 16 is formed, and the protruding portion From the position where 16 is formed to the tip of the portion B, there is an arc shape.

As will be described in detail later, the portion A holds the connector portion 44 of the catheter 40 on its inner peripheral surface (see FIG. 1). Further, as shown in FIG. 4, the portion of the protruding portion 16 from the end surface 16a in the −y axis direction to the tip of the portion B includes the base portion 19 and the protruding portion 16, and the protruding portion 16 is a portion. It functions as a fulcrum when removing the catheter 40 from A. Therefore, in the following, the portion A will be referred to as a "holding portion 18", and the portion of the portion B from the end surface 16a of the protruding portion 16 to the tip of the portion B will be referred to as a "fulcrum portion 20". That is, the fulcrum portion 20 has a base portion 19 and a protruding portion 16. Further, the remaining portion of the portion B (that is, the portion of the portion B from the other end E2 of the portion A to the end surface 16a of the protruding portion 16) connects the holding portion 18 and the fulcrum portion 20. Therefore, in the following, the remaining portion of the portion B will be referred to as a “connection portion 22”. The holding portion 18 corresponds to an example of the “first holding portion”.

Next, the holder holding portion 24 will be described with reference to FIGS. 3, 4, and 7. The holder holding portion 24 has two cylindrical portions 26 and 28. These cylindrical portions 26, 28 have substantially the same shape, and are arranged side by side in a direction orthogonal to the axial direction of each of the cylindrical portions 26, 28. The central axis of the cylindrical portion 26, the central axis of the cylindrical portion 28, and the central axis Y1 of the connector holding portion 12 (see FIG. 5) are located on the same plane. However, the central axes of the cylindrical portions 26 and 28 are tilted by a predetermined angle with respect to the central axis Y1 of the connector holding portion 12. Specifically, in the central axis of each of the cylindrical portions 26 and 28, the intersection (not shown) between the central axis Y1 of the connector holding portion 12 and the central axis of each of the cylindrical portions 26 and 28 is + y more than that of the connector holding portion 12. It is tilted so that it exists on the axial side. Hereinafter, the axial direction of the cylindrical portions 26 and 28 will be referred to as a “second axial direction” in order to distinguish it from the axial direction of the connector holding portion 12. Further, in order to distinguish it from the width direction of the connector holding portion 12, the width direction of the cylindrical portions 26 and 28 (that is, the direction orthogonal to the second axial direction) is referred to as a "second width direction". The holder holding portion 24 corresponds to an example of the "second holding portion".

Openings 26a and 28a that are open upward (in the + z-axis direction) are formed in a part of the cylindrical portions 26 and 28 in the circumferential direction, respectively. As shown in FIGS. 3 and 4, each of the openings 26a and 28a opens along the second axial direction from one end E3 to the other end E4 of each of the cylindrical portions 26 and 28 in the second axial direction. The length in the biwidth direction is constant over the second axial direction. The openings 26a and 28a are formed so as to be line-symmetrical with respect to the second axial direction when the holder holding portion 24 is viewed in a plan view. As shown in FIG. 7, the length D3 in the width direction of each of the openings 26a and 28a is the maximum value D4 (that is, the diameter of the inner peripheral surface) of the length in the width direction of the inner peripheral surfaces of the cylindrical portions 26 and 28. ) Is shorter. Further, as shown in FIG. 4, the length of each of the cylindrical portions 26 and 28 in the second axial direction is longer than the axial length of the holding portion 18 of the connector holding portion 12. The diameter D4 of the inner peripheral surface of each of the cylindrical portions 26 and 28 is larger than the diameter D2 of the inner peripheral surface of the holding portion 18 of the connector holding portion 12 (see FIG. 5). In the present embodiment, the holder holding portion 24 has two cylindrical portions 26 and 28, but the number of cylindrical portions is not limited to this. The number of cylindrical portions can be appropriately determined according to the number of turns of the holder 60.

Subsequently, the arm portion 30 will be described with reference to FIGS. 3, 4, and 7. The arm portion 30 connects a part of the outer peripheral surface of the holding portion 18 of the connector holding portion 12 and a part of the outer peripheral surface of the cylindrical portion 26 of the holder holding portion 24. As shown in FIG. 7, the lower surface 24a of the holder holding portion 24 is flat, and the lower end 12a of the connector holding portion 12 is located above the lower surface 24a.

When holding the catheter 40 housed in the holder 60 with the clip 10, first, the wound holder 60 is fitted into the cylindrical portions 26 and 28 of the holder holding portion 24. The outer diameter of the holder 60 is substantially equal to the diameter D4 of the inner peripheral surfaces of the cylindrical portions 26 and 28, respectively. As mentioned above, the holder 60 is flexible. Therefore, the holder 60 is arranged in each of the openings 26a and 28a so that the axial direction thereof substantially coincides with the axial direction of the openings 26a and 28a of the cylindrical portions 26 and 28, and a force is applied to the holder 60 from above. As a result, the holder 60 is deformed and fitted into the cylindrical portions 26 and 28, respectively.

Next, the connector portion 44 of the catheter 40 (strictly speaking, the first portion 48a of the protector portion 48 (see FIG. 2)) is fitted into the holding portion 18 of the connector holding portion 12. The outer diameter of the first portion 48a of the protector portion 48 of the connector portion 44 is slightly larger than the diameter D2 of the inner peripheral surface of the holding portion 18. As mentioned above, the holding portion 18 has flexibility. Therefore, the axial direction of the first part 48a of the protector portion 48 of the connector portion 44 (hereinafter, also simply referred to as “protector portion 48”) is substantially the same as the axial direction of the opening 14 of the holding portion 18. When the protector portion 48 is placed in the opening 14 and a force is applied to the protector portion 48 from above, the holding portion 18 bends and the protector portion 48 is fitted into the holding portion 18. The protector portion 48 is held (sandwiched) by the connector holding portion 12 by the elastic force of the holding portion 18.

As a result, the wound catheter 40 and the holder 60 (strictly speaking, the connector portion 44 of the catheter 40 and the holder 60 in which the shaft portion 42 and the tip portion 50 of the catheter 40 are housed) can be held by the clip 10. can.

On the other hand, when removing the holder 60 and the catheter 40 housed in the holder 60 from the clip 10, the holder 60 is removed from the holder holding portion 24, and the connector portion 44 of the catheter 40 (strictly speaking, the protector portion 48 is the first. Part 48a) is removed from the holding portion 18 of the connector holding portion 12. The holder 60 can be removed by deforming the holder 60 to such an extent that it can pass through the openings 26a and 28a of the cylindrical portions 26 and 28, respectively. On the other hand, a method of removing the protector portion 48 from the holding portion 18 will be described with reference to FIG. FIG. 8 shows a state in which the protector portion 48 is held by the holding portion 18. In FIG. 8, in order to clarify the state inside the connector holding portion 12, only the connector holding portion 12 is shown as a cross-sectional view when cut in the yz plane passing through the central axis thereof. Further, the connector holding portion 12 located behind the protector portion 48 (in the −x axis direction) is shown by a broken line. Further, in order to make the figure easier to see, the members other than the connector holding portion 12 of the clip 10 are not shown.

As shown in FIG. 8, in a state where the protector portion 48 is held by the holding portion 18, the second portion 48b of the protector portion 48 is an upper end portion of the protruding portion 16 of the fulcrum portion 20 of the connector holding portion 12. Is in linear contact with. In this state, when a force in the + z-axis direction is applied to the lower end P1 of the hub portion 46 of the connector portion 44 of the catheter 40 (that is, the side opposite to the protruding portion 16 side with respect to the holding portion 18), the lower end P1 serves as a force point and the protector portion. The contact point P2 between the 48 and the holding portion 18 (strictly speaking, the entire range in which resistance is generated when the protector portion 48 is removed from the holding portion 18) is the point of action, and the protruding portion 16 comes into contact with the protector portion 48. Each of the contact points P3 (strictly speaking, the entire range in which the protruding portion 16 is in contact with the protector portion 48) functions as a fulcrum, and the protector portion 48 is removed from the holding portion 18 by the principle of the lever. The portion where the upper portion of the protruding portion 16 is in contact with the protector portion 48 while the protector portion 48 is held by the holding portion 18 corresponds to an example of the “contact portion”. Hereinafter, this portion will be referred to as a "contact portion of the protruding portion 16" or a "contact portion".

According to the configuration of the clip 10 of the present embodiment, since the connector holding portion 12 of the clip 10 has the fulcrum portion 20, the protector portion 48 can be removed from the holding portion 18 by utilizing the principle of the lever. Therefore, the protector portion 48 is removed from the holding portion 18 with a remarkably small force as compared with the case where the protector portion 48 is removed from the holding portion 18 by applying a force to the portion of the protector portion 48 located near the contact point P2. be able to. More specifically, assuming that the length from the contact point P2 to the contact point P3 is L1 and the length from the lower end P1 to the contact point P3 is L2 (> L1), the protector portion 48 is removed from the holding portion 18. The force applied to the lower end P1 may be L1 / L2 times (<1) the force applied in the vicinity of the contact point P2. Therefore, according to the configuration of the clip 10 according to the present embodiment, the catheter 40 can be easily removed from the connector holding portion 12 of the clip 10. Further, since it is suppressed that an excessive force is applied to the catheter 40, the possibility that the catheter 40 is deformed at the time of removal can be significantly reduced.

Further, in the present embodiment, the contact portion (contact point P3) is located below the central axis Y1 of the connector holding portion 12 (on the side in the −z axis direction). Here, if the contact portion is located above the central axis Y1 (+ z-axis direction side), when the holding portion 18 holds the protector portion 48, the second portion 48b of the protector portion 48 becomes the contact portion. Since the connector portion 44 comes into contact with the central axis Y1 above the central axis Y1, the connector portion 44 inclines relatively significantly downward toward the −y axis direction. If a force is applied to the lower end P1 of the hub portion 46 in order to remove the protector portion 48 from the holding portion 18 in this state, a relatively large bending stress acts on the protector portion 48 at the contact portion, and the protector portion 48 It may be deformed. On the other hand, in the present embodiment, when the protector portion 48 is held by the holding portion 18, the central axis of the protector portion 48 is located on the same plane as the central axis of the holder 60, and further, the protector portion 48 of the protector portion 48. The second part 48b is in contact with the contact part. Therefore, the possibility that the protector portion 48 is deformed when the protector portion 48 is removed from the holding portion 18 can be further reduced, and the contact portion immediately functions as a fulcrum when a force is applied to the lower end P1 of the hub portion 46. Therefore, the removal operation can be further simplified, and as a result, the protector portion 48 can be more easily removed from the holding portion 18.

Further, in the present embodiment, the fulcrum portion 20 has a protruding portion 16, and the contact portion (contact point P3) is located at the upper end portion of the protruding portion 16. Therefore, as compared with the configuration without the protruding portion 16, when a force is applied to the lower end P1 of the hub portion 46 of the catheter 40, the protector portion 48 moves until it comes into contact with the contact portion of the protruding portion 16. The distance (rotation angle) becomes shorter (smaller). Therefore, the bending stress acting on the protector portion 48 at the contact portion of the protruding portion 16 can be reduced, and the load applied to the protector portion 48 when the protector portion 48 is removed from the holding portion 18 can be further reduced.

Further, in the present embodiment, the connector holding portion 12 includes a connecting portion 22 that connects the holding portion 18 and the fulcrum portion 20. According to this configuration, since the rigidity of the fulcrum portion 20 is improved, the function as a fulcrum portion of the fulcrum portion 20 (strictly speaking, the contact portion of the protruding portion 16 of the fulcrum portion 20) is improved, and as a result, the fulcrum portion 20 is even smaller. The protector portion 48 can be removed from the holding portion 18 by force.

Further, in the present embodiment, the connecting portion 22 extends along the axial direction (y-axis direction) of the holding portion 18. Therefore, when the protector portion 48 is held by the holding portion 18, a part of the protector portion 48 in the circumferential direction faces the connecting portion 22 in the axial direction. As a result, in the portion of the protector portion 48 facing the connecting portion 22, the connecting portion 22 can protect the protector portion 48 from an external impact. That is, the connecting portion 22 can serve as a cover that protects the protector portion 48.

Further, in the present embodiment, the clip 10 includes a connector holding portion 12, a holder holding portion 24, and an arm portion 30, and holds the catheter 40 and the holder 60 in a wound state. Therefore, the catheter 40 and the holder 60 can be held compactly. Further, when the position of the holder holding portion 24 is fixed, the position of the connector holding portion 12 is also fixed. Therefore, in this case, the position of the connector holding portion 12 can be prevented from shifting, and the connector portion 44 of the catheter 40 can be stably held.

Further, in the conventional clip 610 shown in FIG. 14, the force applied to the catheter to remove the catheter held by the clip 610 from the clip 610 is relatively large, so that one hand holds the clip 610 and the other. It is necessary to apply force to the catheter by hand. That is, it is necessary to use both hands to remove the catheter from the clip 610. On the other hand, as described above, in the clip 10 of the present embodiment, the force applied to the catheter 40 to remove the catheter 40 from the clip 10 is significantly reduced, so that the catheter 40 can be removed from the clip 10 with only one hand. Becomes possible. Therefore, the removal operation can be further simplified.

(Modification example 1)
Next, the clip according to the first modification of the present invention will be described with reference to FIG. The clip according to the first modification differs from the clip 10 according to the embodiment only in the configuration of the connector holding portion 112. Therefore, in the following, the illustration and description of the holder holding portion and the arm portion will be omitted, and the connector holding portion 112 will be described. Further, members having the same configuration as the clip 10 according to the embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. The same applies to the modified examples 2 to 5.

The fulcrum portion 20 and the connecting portion 22 of the connector holding portion 12 of the embodiment have a shape in which a part of the holding portion 18 in the circumferential direction extends in the + y-axis direction, and the inner peripheral surface thereof is the holding portion 18. It is continuous with the inner peripheral surface of. On the other hand, the fulcrum portion 120 and the connecting portion 122 of the connector holding portion 112 of the modified example 1 have a flat plate shape, and the surface in the + z-axis direction thereof is not continuous with the inner peripheral surface of the holding portion 18. In that respect, it differs from the connector holding portion 12 of the embodiment. The length of the connecting portion 122 in the width direction is constant over the axial direction. A clip having this configuration can also have the same effect as the clip 10 of the embodiment.

(Modification 2)
Next, the connector holding portion 212 of the clip according to the second modification of the present invention will be described with reference to FIG. In the second modification, the shape of the connecting portion 222 of the connector holding portion 212 is different from the shape of the connecting portion 22 of the connector holding portion 12 of the embodiment. Specifically, the connecting portion 222 has a shape in which the central portion of the connecting portion 22 of the connector holding portion 12 of the embodiment in the circumferential direction is hollowed out along the axial direction. In other words, the connecting portion 222 is composed of a portion 222a and a portion 222b extending in the axial direction, and the holding portion 18 and the fulcrum portion 20 are connected by these portions 222a and 222b. A clip having this configuration can also have the same effect as the clip 10 of the embodiment. In addition, according to this configuration, since the holding portion 18 and the fulcrum portion 20 are connected by the two portions 222a and 222b, the connector holding portion is suppressed while suppressing the decrease in the rigidity of the fulcrum portion 20. The weight of 212 can be reduced.

(Modification example 3)
Next, the connector holding portion 312 of the clip according to the third modification of the present invention will be described with reference to FIG. In the third modification, the connecting portion 322 is composed of a portion 322a and a portion 322b that intersect with each other, and the holding portion 18 and the fulcrum portion 20 are connected by these portions 322a and 322b. A clip having this configuration can also have the same effect as the clip 10 of the embodiment. In addition, according to this configuration, since the holding portion 18 and the fulcrum portion 20 are connected by two portions 322a and the portion 322b that intersect each other, the rigidity of the fulcrum portion 20 is suppressed from being lowered, while suppressing the decrease in the rigidity of the fulcrum portion 20. The weight of the connector holding portion 212 can be reduced.

(Modification example 4)
Next, the connector holding portion 412 of the clip according to the modified example 4 of the present invention will be described with reference to FIG. The connector holding portion 412 of the modified example 4 has a shape in which the reinforcing portion 423 is connected to the lower surface of the connector holding portion 112 of the modified example 1 along the axial direction. The reinforcing portion 423 is located at the center of each of the holding portion 18, the fulcrum portion 120, and the connecting portion 122 in the width direction. A clip having this configuration can also have the same effect as the clip 10 of the embodiment. In addition, according to this configuration, the rigidity of the fulcrum portion 120 can be further improved. The length of the reinforcing portion 423 in the width direction is constant over the axial direction, but the configuration is not limited to this, and a configuration that changes along the axial direction may be used. Further, the reinforcing portion 423 may be applied to the connector holding portions of the embodiment, the modified example 2 and the modified example 3.

(Modification 5)
Next, the clip 510 according to the fifth modification of the present invention will be described with reference to FIG. The clip 510 of the modified example 5 has a point that the connector holding portion 512 does not have a connecting portion for connecting the holding portion 18 and the fulcrum portion 520, and the other end of the cylindrical portion 28 of the fulcrum portion 520 and the holder holding portion 24. It differs from the clip 10 of the embodiment in that it is connected to the E4 by the connecting portion 525. Even with this configuration, it is possible to obtain the same effect as that of the clip 10 of the embodiment.

Although the medical clip according to the present embodiment and the modified example has been described above, the present invention is not limited to the above-described embodiment and the modified example, and various modifications can be made as long as the object of the present invention is not deviated. be.

For example, in the present embodiment, the clip 10 includes the connector holding portion 12, the holder holding portion 24, and the arm portion 30, but the clip 10 may have only the connector holding portion 12. In this case, the clip 10 may have only the holding portion 18 and the fulcrum portion 20 and may not have the connecting portion 22. For example, the clip 10 has a configuration including a member M1 having a holding portion 18 and a member M2 having a fulcrum portion 20 (a member different from the member M1) (that is, the holding portion 18 and the fulcrum portion 20 are separate members. It may have a certain configuration).

Further, in the present embodiment, the holding portion 18 of the connector holding portion 12 sandwiches and fixes the protector portion 48 of the connector portion 44 of the catheter 40 by an elastic force, but the present invention is not limited to this configuration. For example, the diameter D2 of the inner peripheral surface of the holding portion 18 may be substantially the same as the outer diameter of the protector portion 48. In this case, when the protector portion 48 is held on the inner peripheral surface of the holding portion 18, a frictional force is generated at the contact portion between the two. The protector portion 48 may be held by the holding portion 18 by this frictional force. Alternatively, the diameter D2 of the inner peripheral surface of the holding portion 18 may be slightly larger than the outer diameter of the protector portion 48. In this case, the connector holding portion 12 may be provided with a stopper mechanism for suppressing the protector portion 48 from moving in the axial direction when the protector portion 48 is held on the inner peripheral surface of the holding portion 18.

Further, in the present embodiment, when the protector portion 48 of the catheter 40 is held by the holding portion 18 of the connector holding portion 12, the protector portion 48 is in contact with the contact portion (contact point P3) of the protruding portion 16. , Not limited to this configuration. For example, in a state where the protector portion 48 is held by the holding portion 18, a clearance may be provided between the protector portion 48 and the contact portion of the protruding portion 16.

Further, in the present embodiment, the protruding portion 16 has a rectangular shape in a plan view, but the shape of the protruding portion 16 is not limited to this, and may be, for example, a circle, an ellipse, a polygon, or the like. In addition, a plurality of projecting portions 16 may be provided on the base portion 19.

Further, in the present embodiment, the fulcrum portion 20 of the connector holding portion 12 has the protruding portion 16, but the fulcrum portion 20 does not have to have the protruding portion 16. In this case, the portion of the fulcrum portion 20 that the catheter 40 comes into contact with when the catheter 40 is removed from the connector holding portion 12 corresponds to an example of the “contact portion”. Even with this configuration, the catheter 40 can be easily removed from the connector holding portion 12 by the principle of the lever.

Claims (4)

A flexible first holding portion having a tubular shape and configured to hold a tubular medical device on its inner peripheral surface can be contacted with the medical device held by the first holding portion. With a fulcrum part having a contact part,
Wherein the first holding portion, in a part of the circumferential direction of the said cylindrical shape has an opening which is open along the axial direction toward the other end from the one axial end of the tubular shape ,
The fulcrum portion has a base portion arranged on the other end side of the first holding portion, and a protruding portion having the contact portion on the upper end surface, which protrudes from the surface of the base portion toward the axis. And
The contact portion of the fulcrum portion is located at a position separated from the other end of the first holding portion along the axial direction in a direction opposite to the direction toward the one end.
Medical clip. In the medical clip according to claim 1,
Further, a connecting portion for connecting the first holding portion and the fulcrum portion is provided.
Medical clip. In the medical clip according to claim 2.
The connection portion is a medical clip extending along the axial direction of the first holding portion. In the medical clip according to any one of claims 1 to 3.
Further, a second holding portion having a cylindrical shape and an arm portion connecting the first holding portion and the second holding portion are provided.
The medical device has a tubular connector portion and a main body portion that is connected to one end of the connector portion and can be stored in a storage device having a lumen.
The first holding portion is configured to hold the connector portion of the medical device on its inner peripheral surface.
The second holding portion is configured to hold the storage device in which the main body portion of the medical device is housed on its inner peripheral surface.
Medical clip.

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