Holding member

Abstract

To smoothly insert and remove a long body into and from a holding member.SOLUTION: A holding member holds, in a wound state, a long body for medical use stored in a tubular member. The holding member comprises a first holding part for holding the tubular member, and a second holding part for holding the long body projecting from the tubular member. In an axial direction of the long body, the length of the second holding part is shorter than the length of the first holding part. Therefore, as compared with a configuration in which the length of the second holding part is the same as the length of the first holding part, for example, a contact resistance when inserting and removing the long body into and from the second holding part is small.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The technology disclosed in this specification relates to a holding member for holding, in a wound state, an elongated medical object housed in a tubular member. [Background technology]

[0002] A holding member that holds a guidewire housed in a tubular member in a wound state has been known (see, for example, Patent Document 1 below). This holding member has a first recess that holds the tubular member in a wound state, and a second recess that holds the guidewire protruding from the tubular member. The length of the second recess is the same as the length of the first recess. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Pat. No. 1,103,3711 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-described conventional holding member has a problem in that, since there is a large resistance when inserting and withdrawing the guidewire from the second recess, the guidewire cannot be smoothly inserted and withdrawn from the holding member.

[0005] It should be noted that this problem is not limited to guidewires, but is a common problem with holding members that hold long objects such as catheters in a wound state.

[0006] This specification discloses a technique that can solve the above-mentioned problems. [Means for solving the problem]

[0007] The technology disclosed in this specification can be realized, for example, in the following forms.

[0008] (1) The holding member disclosed in the present specification is a holding member that holds a medical elongated body stored in a tubular member in a wound state, and includes a first holding portion that holds the tubular member and a second holding portion that holds the elongated body protruding from the tubular member, and the length of the second holding portion is shorter than the length of the first holding portion.

[0009] In this holding member, the length of the second holding portion is shorter than the length of the first holding portion. Therefore, compared to a configuration in which the length of the second holding portion is the same as the length of the first holding portion, for example, the contact resistance when inserting and removing the elongated body from the second holding portion is smaller. As a result, this holding member allows the elongated body to be smoothly inserted and removed from the holding member.

[0010] (2) In the above-mentioned holding member, the holding member may further have a support surface, the second holding portion may be a protruding portion protruding from the support surface and having a recess formed therein for holding the elongated body, and the support surface may be located on at least one side of the protruding portion in a direction along the recess. In this holding member, the protruding portion of the elongated body protruding from the recess is supported by the support surface. Therefore, according to this holding member, compared to a configuration not having a support surface, for example, it is possible to suppress bending of the protruding portion of the elongated body starting from the end of the recess.

[0011] (3) In the above-mentioned holding member, the width of the recess of the second holding portion may be 0.05 mm or more and 0.25 mm or less. This holding member prevents the elongated body from coming off the recess, compared to a configuration in which the width of the recess is less than 0.05 mm, and allows the elongated body to be inserted and removed from the recess more smoothly, compared to a configuration in which the width of the recess is greater than 0.25 mm.

[0012] (4) In the above-mentioned holding member, at least one of a portion constituting the surface on which the first holding portion is formed and a portion constituting the surface on which the second holding portion is formed may be configured to be chamfered along the entire circumference. This holding member can suppress damage to a storage bag that contains the holding member, compared to a configuration in which, for example, at least a portion of the portion constituting the surface on which the first holding portion is formed or the portion constituting the surface on which the second holding portion is formed is not chamfered.

[0013] (5) In the above-mentioned holding member, the material of the holding member may be ethylene vinyl acetate. In this holding member, the holding member is flexible because it is formed from ethylene vinyl acetate. Therefore, according to this holding member, the long object can be more smoothly inserted and removed from the holding member. In addition, damage to the storage bag that stores the holding member can be more effectively prevented.

[0014] The technology disclosed in this specification can be realized in various forms, for example, a medical equipment set including a holding member, a tubular member in which an elongated body is housed, and the holding member. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is an illustration showing a guidewire 12 and a holder tube 14 with multiple clips 100, 200. [Diagram 2] FIG. 1 is a perspective view showing an overall configuration of a first clip 100; [Diagram 3] FIG. 1 is an explanatory diagram showing a top view of a first clip 100; [Figure 4] FIG. 4 is an explanatory diagram showing a cross-sectional configuration of the first clip 100 taken along the line IV-IV in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] A. Embodiment: Fig. 1 is an explanatory diagram showing a guidewire 12, a holder tube 14, and a plurality of clips 100, 200. In Fig. 1, the guidewire 12 and the holder tube 14 are in a wound state. The plurality of clips 100, 200 are attached to respective portions of the guidewire 12 and the holder tube 14 to hold the guidewire 12 and the holder tube 14 in the wound state. Fig. 1 also shows a tag 20 held by a first clip 100.

[0017] A-1. Configuration of the guidewire 12 and holder tube 14: 1 shows a tip tube 16 in addition to the guidewire 12 and holder tube 14. Note that the guidewire 12 is an example of a long body in the claims, and the holder tube 14 and tip tube 16 are an example of a tubular member in the claims.

[0018] The guidewire 12 is a long medical device that is inserted into a blood vessel, etc., to guide a catheter to a lesion (a narrowed or blocked area) in the blood vessel, etc. The total length of the guidewire 12 is, for example, about 1500 mm or more and 3000 mm or less, and the outer diameter of the guidewire 12 is, for example, about 0.15 mm or more and 0.5 mm or less.

[0019] The holder tube 14 and the tip tube 16 are both tubular components in which the guidewire 12 is housed. The holder tube 14 and the tip tube 16 are formed from a flexible material such as resin. The holder tube 14 covers most of the guidewire 12 except for one end portion. The length of the tip tube 16 is shorter than the length of the holder tube 14. The tip tube 16 covers the tip portion of the one end portion of the guidewire 12.

[0020] The holder tube 14 and the tip tube 16 are arranged so as to be spaced apart from each other in the axial direction of the guidewire 12 in a wound state (hereinafter sometimes simply referred to as the "tube axial direction"). Therefore, there are non-exposed portions of the guidewire 12 covered by the holder tube 14 and the tip tube 16, and exposed portions of the guidewire 12. The tube axial direction is an example of a direction along the recess in the claims.

[0021] A-2. Configuration of the first clip 100: Fig. 2 is a perspective view showing the overall configuration of the first clip 100, Fig. 3 is an explanatory diagram showing the configuration of the upper surface (holding surface 101 described below) of the first clip 100, and Fig. 4 is an explanatory diagram showing the cross-sectional configuration of the first clip 100 at the position IV-IV in Fig. 1. The first clip 100 is an example of a holding member in the claims.

[0022] As shown in Figures 2 and 3, the first clip 100 is a generally box-shaped member that is long in one direction (the left-right direction on the paper of Figures 2 to 4) as a whole. The first clip 100 is made of ethylene vinyl acetate. The first clip 100 includes a tube holding portion 110 and a wire holding portion 120. The tube holding portion 110 is an example of a first holding portion in the claims.

[0023] (Tube holding portion 110): The tube holding portion 110 has two tube grooves 114. The tube grooves 114 are formed to a size capable of holding the holder tube 14. Each tube groove 114 extends linearly along the short-side direction of the first clip 100 (the vertical direction of the paper surface of FIG. 3). The tube groove 114 is a groove that extends continuously over the entire length of the tube groove 114, and the inner wall surface that constitutes the tube groove 114 (particularly the insertion space 114B described later) contacts and holds the holder tube 14 over the entire length. For this reason, the length L1 (see FIG. 3) of the tube groove 114 is an example of the first length in the claims. In this embodiment, each tube groove 114 extends over the entire length of the first clip 100 (see L1 in FIG. 3) in the short-side direction of the first clip 100.

[0024] Each tube groove 114 has a storage space 114A and an insertion space 114B (see FIG. 4). The storage space 114A is a space for storing the guide wire 12. The cross-sectional shape of the storage space 114A in the tube axial direction is substantially circular. The insertion space 114B is located between the storage space 114A and a surface of the first clip 100 where the tube groove 114 opens (hereinafter referred to as the "holding surface 101"). In the first clip 100, a surface located on the opposite side to the holding surface 101 is referred to as the base surface 102 (see FIGS. 2 and 4).

[0025] An opening width D1 of the accommodation space 114A is wider than a thickness D2 (outer diameter) of the holder tube 14, and an opening width D3 of the insertion space 114B is narrower than the thickness D2 of the holder tube 14. This prevents the holder tube 14 accommodated in the accommodation space 114A from slipping out of the tube groove 114. In this specification, "the recess holds the elongated body" does not necessarily mean that the recess always clamps the elongated body, but also includes the recess accommodating the elongated body with a clearance and preventing it from slipping out (see FIG. 4).

[0026] The two tube grooves 114 are parallel to each other and arranged to line up in the longitudinal direction of the first clip 100 (see FIG. 3). Therefore, the tube holding portion 110 can hold each of the multiple linear portions lined up in the radial direction of the holder tube 14 in a wound state.

[0027] (Wire holding portion 120): The wire holding portion 120 is disposed on one side of the first clip 100 in the short-side direction (the up-down direction on the paper surface of FIG. 3) relative to the tube holding portion 110. The wire holding portion 120 has one wire groove 124. The wire groove 124 is formed to a size capable of holding the guide wire 12. In other words, the width of the wire groove 124 is narrower than the width of the tube groove 114 (see FIG. 4). The wire groove 124 is an example of a recess in the claims. Note that the wire groove 124 is formed to open to the holding surface 101, similar to the tube groove 114.

[0028] Wire groove 124 extends linearly along the short-side direction of first clip 100 (the vertical direction on the paper surface of FIG. 3). Wire groove 124 is a groove that extends continuously over the entire length of wire groove 124, and the inner wall surface that constitutes wire groove 124 contacts and holds guide wire 12 over the entire length. For this reason, length L2 of wire groove 124 is an example of the second length in the claims.

[0029] The wire holding portion 120 has a pair of support surfaces 121 and a protruding portion 122. Each support surface 121 is located on the base surface 102 side relative to the holding surface 101 (see FIG. 2). The protruding portion 122 is disposed between the pair of support surfaces 121 in the tube axial direction. The protruding portion 122 is formed so as to protrude toward the holding surface 101 side relative to each support surface 121. In the tube axial direction, the length of the protruding portion 122 (the same as the length L2 of the wire groove 124) is shorter than the length L1 of the tube holding portion 110. The protruding portion 122 is an example of a second holding portion in the claims.

[0030] The wire groove 124 is formed in the protruding portion 122, and is not formed in the support surface 121. Therefore, in the tube axial direction, the length L2 of the wire groove 124 is shorter than the length L1 of the tube groove 114. The ratio of the length L2 of the wire groove 124 to the length L1 of the tube groove 114 is, for example, 2 / 3 or less, or 1 / 2 or more. Specifically, the length L2 of the wire groove 124 is, for example, 3.5 mm or more and 4.5 mm or less.

[0031] It is preferable that the bottom surface of wire groove 124 is flush with support surface 121. With such a configuration, unlike a configuration in which a step exists between the bottom surface of wire groove 124 and support surface 121, for example, it is possible to suppress concentration of stress originating from the step on guide wire 12 held in wire groove 124.

[0032] In the tube holding part 110, a portion constituting the surface (holding surface 101) in which the tube groove 114 is formed is chamfered all around. Specifically, as shown in Fig. 2, a portion constituting the surface located between the two tube grooves 114 is chamfered all around to form a first tapered surface C1. Portions constituting the surfaces located on both sides of the two tube grooves 114 are chamfered all around to form second tapered surfaces C2.

[0033] Of the wire holding portion 120, a portion constituting the surface on which the wire groove 124 is formed (the upper surface of the protruding portion 122) is chamfered over the entire circumference. Specifically, the upper surface portion of the protruding portion 122 is chamfered over the entire circumference to form a third tapered surface C3. Furthermore, a portion constituting the support surface 121 is chamfered over the entire circumference to form a fourth tapered surface C4. Furthermore, a corner between the upper surface of the protruding portion 122 and the wire groove 124 is chamfered over the entire circumference to form a fifth tapered surface C5. Note that, in this embodiment, of the first clip 100, a portion constituting the base surface 102 is chamfered over the entire circumference to form a sixth tapered surface C6.

[0034] The first clip 100 can hold the tag 20. The tag 20 is an identification tag on which, for example, identification information of the guidewire 12 is displayed. The tag 20 is in the form of a rectangular plate, and an insertion hole 22 is formed on one end 24 side (see FIG. 4). The one end 24 of the tag 20 is inserted into the tube groove 114, and the holder tube 14 is inserted from above the one end 24. As a result, the one end 24 of the tag 20 is sandwiched between the inner wall surface constituting the tube groove 114 of the first clip 100 and the holder tube 14. This makes it possible to effectively prevent the tag 20 from coming off during, for example, the transport of the guidewire 12.

[0035] A-3. Configuration of the second clip 200: The second clip 200 is a generally box-shaped member that is long in one direction as a whole, similar to the first clip 100. The second clip 200 differs from the first clip 100 in that it does not have a wire holding portion 120 and has three tube grooves 114. In other words, the second clip 200 is used to hold the holder tube 14 and the tip tube 16.

[0036] A-4. Advantages of the first embodiment: As described above, in the first clip 100 of this embodiment, the length L2 of the wire groove 124 is shorter than the length L1 of the tube groove 114 in the tube axial direction (see FIG. 3). Therefore, compared to a configuration in which the length L2 of the wire groove 124 is the same as the length L1 of the tube groove 114, for example, the contact resistance is smaller when the guidewire 12 is inserted and removed from the wire holding portion 120. As a result, according to this embodiment, the guidewire 12 can be smoothly inserted and removed from the first clip 100.

[0037] In this embodiment, the wire holding portion 120 has a support surface 121 along the tube axial direction, and a protruding portion 122 that protrudes from the support surface 121 and has a wire groove 124 formed therein (see FIG. 2). Therefore, the protruding portion of the guide wire 12 that protrudes from the wire groove 124 (protruding portion 122) is supported by the support surface 121. Therefore, according to this embodiment, compared to a configuration that does not have the support surface 121, for example, it is possible to prevent the protruding portion of the guide wire 12 from bending starting from the end of the wire groove 124.

[0038] In this embodiment, the width of the wire groove 124 (opening width D3 in FIG. 4) is, for example, not less than 0.05 mm and not more than 0.25 mm. According to this embodiment, the guidewire 12 is prevented from coming off the wire groove 124, compared to a configuration in which the width of the wire groove 124 is less than 0.05 mm. Also, the guidewire 12 can be inserted and removed from the wire groove 124 more smoothly, compared to a configuration in which the width of the wire groove 124 is greater than 0.25 mm.

[0039] In this embodiment, the portion of the tube holding portion 110 constituting the surface (holding surface 101) on which the tube groove 114 is formed is chamfered over the entire circumference. Also, the portion of the wire holding portion 120 constituting the surface (upper surface of the protruding portion 122) on which the wire groove 124 is formed is chamfered over the entire circumference (see FIG. 2). According to this embodiment, compared to a configuration in which at least a portion of the portion constituting the holding surface 101 or the portion constituting the upper surface of the protruding portion 122 is not chamfered, it is possible to suppress damage to a storage bag (not shown) that contains the first clip 100 caused by the corners of the first clip 100. Note that in this embodiment, other surfaces (such as the base surface 102) constituting the outer shape of the first clip 100 are also chamfered over the entire circumference, so that damage to the storage bag can be more effectively suppressed.

[0040] The first clip 100 is made of ethylene vinyl acetate. Therefore, according to the present embodiment, the first clip 100 has flexibility, so that the guide wire 12, the holder tube 14, etc. can be inserted and removed more smoothly. Also, damage to the storage bag can be more effectively prevented.

[0041] B. Variations: The configuration of the catheter set in the above embodiment is merely an example and can be modified in various ways. For example, the form of each member in the above embodiment is merely an example and can be modified in various ways. For example, in the above embodiment, the number of tube grooves 114 provided in the tube holding portion 110 may be one, or three or more. The number of wire grooves 124 provided in the wire holding portion 120 may be two or more.

[0042] In the above embodiment, the first holding portion is exemplified as the tube groove 114 extending continuously in a straight line, but the first holding portion may be a form in which a plurality of unit recesses are arranged at a distance in the tube axial direction. In this form, the "length of the first holding portion" in the claims is the total length of the plurality of unit recesses. Also, in the above embodiment, the second holding portion is exemplified as the wire groove 124 extending continuously in a straight line, but the second holding portion may be a form in which a plurality of unit recesses are arranged at a distance in the tube axial direction. In this form, the "length of the second holding portion" in the claims is the total length of the plurality of unit recesses.

[0043] In the above embodiment, the wire holding portion 120 (wire groove 124) is formed on the same holding surface 101 as the tube holding portion 110 (tube groove 114) of the first clip 100, but it may be formed on a surface other than the holding surface 101 (for example, the base surface 102 or a side surface connecting the holding surface 101 and the base surface 102). Also, in the above embodiment, the first clip 100 may be configured not to have at least one of the pair of support surfaces 121.

[0044] In the above embodiment, the length L2 of the wire groove 124 may be less than 0.05 mm or may be greater than 0.25 mm. The first clip 100 may be configured without at least a part of the first tapered surface C1 to the sixth tapered surface C6.

[0045] In the above embodiment, the elongated body to be held by the first clip 100 is not limited to the guidewire 12, and may be, for example, a catheter, etc. Also, in the above embodiment, the configuration may not include the tip tube 16.

[0046] The materials of the members in the above embodiment are merely examples and may be modified in various ways. For example, the material of the first clip 100 is ethylene vinyl acetate in the above embodiment, but is not limited thereto, and may be various resin materials such as polyethylene, polypropylene, polyolefin of ethylene-propylene copolymer, polyvinyl chloride, polystyrene, polyamide, polycarbonate, acrylic resin, etc. [Explanation of symbols]

[0047] 12: Guide wire 14: Holder tube 16: Tip tube 20: Tag 22: Insertion hole 24: One end 100: First clip 101: Holding surface 102: Base surface 110: Tube holding portion 114: Tube groove 114A: Storage space 114B: Insertion space 120: Wire holding portion 121: Support surface 122: Protruding portion 124: Wire groove 200: Second clip C1: First tapered surface C2: Second tapered surface C3: Third tapered surface C4: Fourth tapered surface C5: Fifth tapered surface C6: Sixth tapered surface

Claims

1. A holding member that holds a medical elongated body housed in a tubular member in a wound state, a first holding portion that holds the tubular member; a second holding portion that holds the elongated body protruding from the tubular member, The length of the second holding portion is shorter than the length of the first holding portion. Holding member.

2. The holding member according to claim 1, The holding member further has a support surface; the second holding portion is a protruding portion that protrudes from the support surface and has a recess formed therein to hold the elongated body, The support surface is located on at least one side of the protrusion in a direction along the recess. Holding member.

3. The holding member according to claim 2, The width of the recess of the second holding portion is 0.05 mm or more and 0.25 mm or less. Holding member.

4. The holding member according to any one of claims 1 to 3, At least one of a portion constituting the surface on which the first holding portion is formed and a portion constituting the surface on which the second holding portion is formed is chamfered over the entire periphery. Holding member.

5. The holding member according to any one of claims 1 to 3, The material of the retaining member is ethylene vinyl acetate. Holding member.

Images