Holder for long medical components

Abstract

To provide a holding tool for a medical long member holding a medical long member while suppressing damage thereon.SOLUTION: A holding tool 10 includes: a first member 20; a second member 40 rotatable relative to the first member 20; and an elastic friction member 50 partly fixed to the first member 20 and the second member 40 and made of elastic material. The elastic friction member 50 is twisted by rotating the second member 40 relative to the first member 20, so that an intermediate part 55 between a part fixed to the first member 20 and a part fixed to the second member 40 holds a medical long member 1 so as to be tightly attached to the outer periphery thereof, and has a rotation stop part restricting the rotation of the second member 40 relative to the first member 20 in a direction loosening twist thereof while letting the second member rotate relative to the first member.SELECTED DRAWING: Figure 7

Description

[[Technical Field]]

[0001] The present invention relates to a holder for a long medical member that holds a long medical member. [[Background Art]]

[0002] Conventionally, shunt surgery has been performed to facilitate securing the extracorporeal circulation blood flow volume required for hemodialysis (artificial dialysis) by anastomosing an artery and a vein subcutaneously, allowing arterial blood to directly flow into the vein to engorge easily accessible vein blood vessels, or anastomosing a graft (artificial blood vessel) between the artery and the vein. However, continuous hemodialysis treatment as described above sometimes causes occlusion or stenosis around the shunt portion. Therefore, when performing treatment to dilate such occluded or stenosed portions (shunt PTA), long medical members such as balloon catheters are used, for example.

[0003] By the way, when a long medical member such as a balloon catheter is used during dilation treatment (shunt PTA) for an occluded portion or a stenosed portion around the shunt as described above, it is necessary to hold the long medical member to prevent it from moving for a certain period of time. In this case, the long medical member may be held against the human body via tape or the like, or the long medical member may be held using a separate holder.

[0004] As for the latter type, for example, Patent Document 1 below describes a fixing device for fixing a medical catheter. This fixing device includes a stopper portion that controls movement of the catheter in the lengthwise direction by frictional force with the catheter, and a fixing portion formed in a ring shape, a leg shape, or a plate shape and contacting the skin. A lumen fitted into the outer circumference of the catheter in the stopper portion is formed of a first lumen portion having the same central axis as that of the stopper portion, and a second lumen portion connected to the first lumen portion in an inclined manner at a slight angle relative to the central axis of the first lumen portion, whereby frictional resistance between the lumen and the outer peripheral surface of the catheter is increased to make the catheter less prone to slipping. [[Prior Art Literature]] [[Patent Documents]]

[0005] [Patent Document 1] Japanese Patent Publication No. 2006-305025 [Overview of the project] [Problems that the invention aims to solve]

[0006] In the case of the fixing device described in Patent Document 1, the inside of the stopper portion is such that the second lumen is inclined relative to the first lumen. Therefore, when a medical catheter is inserted into the stopper portion, the medical catheter is held in a bent position (see Figure 2 of Patent Document 1). In this case, there is a risk of damaging the medical catheter.

[0007] Therefore, the object of the present invention is to provide a holder for long medical components that can hold long medical components while suppressing damage to the components. [Means for solving the problem]

[0008] To achieve the above objective, the holder for a long medical member according to the present invention comprises a first member disposed on the outer circumference of the long medical member, a second member disposed on the outer circumference of the long medical member and rotatable relative to the first member, and an elastic friction member made of an elastic material disposed on the outer circumference of the long medical member and partially fixed to the first member and the second member, wherein the elastic friction member twists when the second member is rotated relative to the first member, and the intermediate portion between the fixed portion to the first member and the fixed portion to the second member comes into close contact with the outer circumference of the long medical member, thereby holding the long medical member, and has an anti-rotation portion that restricts the rotation of the second member relative to the first member in the direction in which the twist returns to its original state when the two members are rotated relative to each other. [Effects of the Invention]

[0009] According to the present invention, by rotating the second member relative to the first member, the stretchable friction member made of a stretchable material twists, and its intermediate portion comes into close contact with the outer circumference of the medical-grade long member, thereby holding the medical-grade long member. This allows for holding the medical-grade long member while suppressing damage to it. [Brief explanation of the drawing]

[0010] [Figure 1] This is an exploded perspective view showing a first embodiment of a holder for a long medical member according to the present invention. [Figure 2] This is a perspective view of the holder. [Figure 3] This diagram illustrates the process of holding long medical components with the same holder, and is a perspective view of the first step. [Figure 4] The first step in holding a long medical component with the holder is shown as follows: (a) is a longitudinal section view, and (b) is a cross-sectional view taken along the line of arrow AA in (a). [Figure 5] (a) is a cross-sectional view taken from the line of arrow BB in Figure 4(a), (b) is an enlarged explanatory diagram of the anti-rotation part before the second member is rotated relative to the first member, and (c) is an enlarged explanatory diagram of the anti-rotation part after the second member has been rotated relative to the first member. [Figure 6] The second step in holding a long medical component with the holder is shown in (a) as a longitudinal section and (b) as a transverse section. [Figure 7] The third step in holding a long medical component with the holder, where (a) is a longitudinal cross-sectional view and (b) is a transverse cross-sectional view. [Figure 8] This is a cross-sectional diagram illustrating the usage of the holder. [Figure 9] This is a perspective view showing a second embodiment of a holder for a long medical member according to the present invention. [Figure 10] This shows a third embodiment of a holder for long medical members according to the present invention, where (a) is a front view and (b) is a cross-sectional view thereof. [Figure 11]It is the first step when holding an elongated medical member with the holder, wherein (a) is a longitudinal sectional view, (b) is a sectional view taken along line D-D of (a), and (c) is a transverse sectional view. [Figure 12] It is the second step when holding an elongated medical member with the holder, wherein (a) is a longitudinal sectional view and (b) is a transverse sectional view. [Figure 13] It is a perspective view showing a fourth embodiment of the holder for an elongated medical member according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] (First Embodiment of Elongated Member Holder) Hereinafter, a first embodiment of the holder for an elongated medical member according to the present invention will be described with reference to Figures 1 to 8.

[0012] As shown in Figure 1, the holder 10 for an elongated medical member (hereinafter, also simply referred to as "holder 10") in this embodiment is configured to hold an elongated medical member 1 (see Figure 3, hereinafter also simply referred to as "elongated member 1").

[0013] Referring also to Figure 4, the holder 10 includes: a first member 20 disposed on the outer periphery of the elongated member 1; a second member 40 disposed on the outer periphery of the elongated member 1 and capable of relative rotation with respect to the first member 20; and an elastic friction member 50 made of an elastic material (hereinafter, also simply referred to as "friction member 50") disposed on the outer periphery of the elongated member 1, with a part thereof fixed to the first member 20 and the second member 40.

[0014] In this embodiment, one end 51, which is a part of the friction member 50, is fixed to the inner surface of the first member 20, and the other end 53, which is also a part of the friction member 50, is fixed to the second member 40 (see Figure 4(a)). Note that the one end 51 of the friction member 50 constitutes the "fixed portion to the first member" in the present invention, and the other end 53 of the friction member 50 constitutes the "fixed portion to the second member" in the present invention.

[0015] Further, the friction member 50 is twisted by rotating the second member 40 relative to the first member 20, and as shown in Fig. 7, an intermediate portion 55 between a fixed portion to the first member 20 (herein, one end 51 of the friction member 50) and a fixed portion to the second member 40 (herein, the other end 53 of the friction member 50) is in close contact with the outer periphery of the elongated member 1 to hold the elongated member 1.

[0016] Further, in a state where the second member 40 is rotated relative to the first member 20, there is provided a rotation stopper that restricts rotation of the second member 40 relative to the first member 20 in a direction in which the twist is untwisted (herein, this refers to the first rotation stopping protrusion 33 and the second rotation stopping protrusion 45 shown in Figs. 5(b) and 5(c), which will be described later).

[0017] As shown in Fig. 8, in this embodiment, the elongated member 1 held by the holder 10 is a cylindrical balloon catheter.

[0018] Further, the elongated member 1 configured as a balloon catheter is adapted to be inserted through a sheath 2 formed in a sheath shape extending with a predetermined length (see Fig. 8). The sheath 2 is adapted to be inserted into a tubular organ 9 such as a blood vessel through the skin 8 via a puncture needle or the like not shown. A connector 3 is attached to the proximal end side in the extending direction of the sheath 2. The holder 10 holds the elongated member 1 and is fixed to the connector 3. The aforementioned sheath 2 constitutes "the member through which a medical elongated member is inserted" in the present invention, and the proximal opening of the connector 3 constitutes "the insertion portion" in the present invention.

[0019] Further, a fluid injection tube 4 for injecting a fluid such as physiological saline or a medical solution into the sheath 2 is connected to a predetermined position on the outer periphery of the connector 3. Further, a film body 5 allowing the elongated member 1 to be inserted therethrough is retained at the proximal opening of the connector 3 via a cap 6 so as to prevent the film body 5 from slipping out. A pair of protrusions 7, 7 for fixing to the holder 10 are protruded from the outer periphery of the proximal end of the connector 3.

[0020] In the following explanation, "one end" refers to the end of the medical long member holder that is furthest from the user's hand (distal end), while "the other end" refers to the end opposite to the above-mentioned one end (proximal end that is closer to the user's hand). However, this excludes the stretchable friction member 50B of the third embodiment shown in Figures 10-12.

[0021] In this embodiment, the first member 20 has a main body 21 that is substantially cylindrical in shape and extends for a predetermined length.

[0022] Furthermore, an annular flange portion 23 protrudes radially outward from the outer circumference of one end of the main body 21 in the extending direction, and an enlarged diameter portion 25, which is larger in diameter than the main body 21, is provided via this flange portion 23.

[0023] As shown in Figures 4 and 5(a), the inner circumference of the enlarged diameter portion 25 is provided with a pair of axial grooves 27, 27 formed along the axial direction of the first member 20, and a pair of circumferential grooves 29, 29 formed along the circumferential direction of the first member 20 and communicating with the axial grooves 27, 27 at the other axial end of the axial grooves 27, 27.

[0024] Then, by aligning the pair of axial grooves 27, 27 of the first member 20 with the pair of protrusions 7, 7 of the connector 3, and pushing the first member 20 into the connector 3, the first member 20 is rotated in a predetermined direction relative to the connector 3, so that the pair of protrusions 7, 7 engage with the pair of circumferential grooves 29, 29, and the first member 20 is fixed to the base end side of the connector 3 in an anti-dislodgement manner, as shown in Figure 8.

[0025] Furthermore, an annular projection 31, which has a smaller diameter than the outer diameter of the main body 21 and is an annular convex shape, protrudes from the other end face in the extending direction of the main body 21. As shown in Figures 5(b) and (c), a first anti-rotation projection 33, which has a convex curved surface (approximately semicircular shape) on its outer circumference, is provided protruding from a predetermined location on the outer circumference of the annular projection 31.

[0026] On the other hand, the second member 40 is cylindrical and is arranged coaxially with respect to the first member 20 (see Figure 2).

[0027] Specifically, the second member 40 of this embodiment has a body 41 that is substantially cylindrical and extends for a predetermined length. This body 41 is formed with an outer diameter and inner diameter that match the body 21 of the first member 20 (see Figure 4). Furthermore, one end of the body 41 in the direction of extension is positioned opposite the other end of the first member 20 in the direction of extension (see Figure 2). In addition, an annular recess 43 is formed on the inner circumference of one end of the body 41, into which the annular projection 31 of the first member 20 fits.

[0028] Furthermore, as shown in Figures 5(b) and (c), a second anti-rotation projection 45, having a convex curved outer surface (approximately semicircular), protrudes from the inner circumferential surface of the annular recess 43, and an over-rotation prevention stopper 47, having an approximately square outer surface, protrudes from a position a predetermined length away from the second anti-rotation projection 45. The circumferential distance between the second anti-rotation projection 45 and the over-rotation prevention stopper 47 is such that the first anti-rotation projection 33 can fit inside.

[0029] Figure 5(b) shows the state of the first member 20 and the second member 40 before relative rotation. In this state, the over-rotation prevention stopper 47 is located slightly away from one side in the circumferential direction of the first anti-rotation projection 33.

[0030] From the above state, for example, if the first member 20 is gripped and fixed, and the second member 40 is rotated in the R1 direction shown in Figures 3 and 5(b), the intermediate portion 55 of the friction member 50 is twisted (see Figures 6(b) and 7(b)), and as shown in Figure 5(c), the second anti-rotation projection 45 overcomes the first anti-rotation projection 33, causing the first anti-rotation projection 33 to fit between the second anti-rotation projection 45 and the over-rotation prevention stopper 47. At this time, even if the second member 40 is to be rotated further in the R1 direction, the over-rotation prevention stopper 47 comes into contact with the first anti-rotation projection 33, thus preventing over-rotation of the second member 40.

[0031] Then, when the rotational movement on the first member 20 is completed and the hand is released from the second member 40, the friction member 50, whose intermediate portion 55 has been twisted, rotates in the direction that reverses the twist due to its restoring force, causing the second member 40 to attempt to rotate relative to the first member 20 in the direction shown by R2 in Figure 5(c). At this time, the second anti-rotation projection 45 comes into contact with the first anti-rotation projection 33, thereby restricting the rotation of the second member 40 in the R2 direction.

[0032] Furthermore, if the first member 20 and the second member 40 are moved axially apart from the state shown in Figure 5(c), the first anti-rotation projection 33 and the second anti-rotation projection 45 will shift axially, and the second anti-rotation projection 45 will no longer be in contact with the first anti-rotation projection 33. As a result, the restriction on the rotation of the second member 40 in the R2 direction will be released, and it will be possible to return to the state before relative rotation.

[0033] As described above, in this embodiment, the first anti-rotation projection 33 provided on the first member 20 side and the second anti-rotation projection 45 provided on the second member 40 side constitute the "anti-rotation portion" in the present invention.

[0034] Next, we will explain the friction member 50.

[0035] This friction member 50 is made of a material that is elastic and can exert frictional force against the outer circumference of the long member 1, such as rubber, elastic elastomer, stretchable fiber, or synthetic resin.

[0036] As shown in Figure 1, the friction member 50 in this embodiment is substantially cylindrical in shape and extends for a predetermined length, and is made of the above material. Furthermore, the friction member 50 is formed to a size that allows it to be inserted inside (in the internal space) of the first member 20 and the second member 40.

[0037] As shown in Figure 4, the friction member 50 is attached to the first member 20 with one end in the extending direction inserted into the first member 20, and the outer circumference of one end 51, which is part of the friction member 50, is fixed to the inner circumference of one end of the first member 20 via adhesive or the like. The other end in the extending direction is attached to the second member 40, and the outer circumference of the other end 53, which is part of the friction member 50, is fixed to the inner circumference of the other end of the second member 40 via adhesive or the like. As a result, the friction member 50 is attached to the first member 20 and the second member 40. In other words, the first member 20 and the second member 40 are integrated via the friction member 50 so that they can rotate relative to each other, thereby forming the holder 10.

[0038] Furthermore, the intermediate portion 55 of the friction member 50, located between one end 51 which is fixed to the first member 20 and the other end 53 which is fixed to the second member 40, is free from the first member 20 and the second member 40 (not fixed to the first member 20 and the second member 40), and twists when the second member 40 rotates relative to the first member 20, allowing it to come into close contact with the outer circumference of the long member 1.

[0039] Furthermore, as shown in Figure 4, when the first member 20 and the second member 40 are integrated via the friction member 50 to form the holder 10, the intermediate portion 55 of the friction member 50 is spaced a certain distance radially from the outer circumference of the long member 1 (and also spaced apart from the inner circumferences of the first member 20 and the second member 40).

[0040] Furthermore, the intermediate portion 55 has a tapered portion 57 between it and one end 51 that gradually widens in diameter toward one end face of the friction member 50, and a tapered portion 57 between it and the other end 53 that gradually widens in diameter toward the other end face of the friction member 50.

[0041] To hold the long member 1 with the holder 10, for example, the following can be done:

[0042] First, as shown in Figures 3 and 4, the elongated member 1 is inserted through one opening on either end of the holder 10 and then inserted through the other opening on either end of the holder 10, so that the elongated member 1 is passed inside the first member 20, the second member 40, and the friction member 50, and the holder 10 is positioned on the outer circumference of the elongated member 1. Then, the first member 20 is gripped and fixed, and the second member 40 is rotated (twisted) in the R1 direction shown in Figures 3 and 5(b).

[0043] As a result, the other end 53 of the friction member 50 rotates with the rotation of the second member 40 relative to the one end 51 fixed to the first member 20, causing the middle portion 55 of the friction member 50 to twist. As shown in Figure 6(b), the middle portion 55 deforms so that spiral folds and wrinkles are formed in the tapered portion 57, and as shown in Figure 6(a), a predetermined portion of the middle portion 55 wraps around the outer circumference of the long member 1 and becomes tightly attached.

[0044] As the second member 40 is further rotated in the R1 direction relative to the first member 20, the intermediate portion 55 of the friction member 50 is twisted further, and as shown in Figure 7(b), the intermediate portion 55 deforms further so that the spiral folds and wrinkles of the tapered portion 57 increase. Also, as shown in Figure 7(a), the intermediate portion 55 wraps further around the outer circumference of the long member 1, increasing the amount of contact between the intermediate portion 55 of the friction member 50 and the outer circumference of the long member 1. As a result, the holder 10 holds the long member 1.

[0045] (modified version) The shape, structure, and layout of the medical long member holder, the first member, the second member, the stretchable friction member, etc., that constitute the holder in the embodiments described above are not limited to the above-described embodiments.

[0046] Furthermore, the long medical component may be anything other than a balloon catheter, such as a guidewire, sheath, medical tube, or tube stent.

[0047] Furthermore, in this embodiment, the "member for inserting the long medical member" in the present invention is the sheath 2, but the member for inserting the long medical member may be, for example, a tube that constitutes an endoscope (a tube having multiple lumens), a catheter, a medical tube, etc.

[0048] Furthermore, in this embodiment, the "insertion portion" in the present invention is the base end opening of the connector 3, but the insertion portion may be, for example, the base end openings of multiple lumens of the tube constituting the endoscope.

[0049] In this embodiment, the first member, the second member, and the stretchable friction member are substantially cylindrical in shape so as to surround the entire outer circumference of the medical-grade elongated member, but the embodiment is not limited to this, and any member that can be arranged on the outer circumference of the medical-grade elongated member is acceptable. For example, the first member and the second member may be rectangular, C-shaped, U-shaped, or the like.

[0050] Furthermore, in this embodiment, the elastic friction member 50 has one end 51 fixed to the first member 20 and the other end 53 fixed to the second member 40. However, the fixing portion to the first member 20 and the second member 40 does not have to be one end 51 or the other end 53. In other words, the elastic friction member can be configured such that a part of it is fixed to the first member and the second member, and when the second member is rotated relative to the first member, it twists so that the intermediate part is in close contact with the outer circumference of the long medical member. For example, it may be in a shape that extends in a strip.

[0051] Furthermore, in this embodiment, when the retainer is positioned on the outer circumference of the medical-grade elongated member, the medical-grade elongated member is inserted through openings located at both ends of the retainer in the extending direction. However, for example, axially extending slits may be formed on the outer circumference of the first member or the second member, and the medical-grade elongated member may be inserted into the retainer through these slits (this will be explained in the second embodiment).

[0052] Furthermore, in this embodiment, the first and second members are cylindrical and arranged coaxially, but for example, one of the first or second members may be cylindrical, and the other member may be a frame-like shape that can rotate relative to the other member (this will be explained in the third embodiment).

[0053] Furthermore, in the case of the holder 10 of this embodiment, it holds the long member 1 and is fixed to the base end side of the connector 3 attached to the sheath 2 to prevent it from coming off. However, as a holder for a long medical member, any holder capable of holding a long medical member is acceptable.

[0054] Furthermore, in this embodiment, the "anti-rotation portion" in the present invention consists of a first anti-rotation projection 33 provided on the first member 20 side and a second anti-rotation projection 45 provided on the second member 40 side (a structure consisting of projections), but the anti-rotation portion is not particularly limited; for example, a convex portion may be provided on one member and a recess in the other member into which the convex portion fits.

[0055] (Effects and Benefits) Next, the effects and benefits of the holder 10 having the above structure will be explained.

[0056] In this embodiment, the retainer 10 can be used, for example, to hold a long medical member 1 such as a balloon catheter when performing treatment to dilate an obstructed or narrowed area (shunt PTA) when obstruction or narrowing occurs around the shunt due to continued hemodialysis treatment. The long medical member is not particularly limited and may be used for various tubular organs such as the bile duct, pancreatic duct, blood vessels, ureters, trachea, or when placing stents in predetermined locations in human tissue such as body cavities. Furthermore, the type of long medical member held by the retainer and the location where the retainer is used are not particularly limited.

[0057] In this embodiment, the long member 1 is inserted into the base end opening of the connector 3 attached to the sheath 2, as shown in Figure 8.

[0058] When holding the elongated member 1 with the holder 10, the elongated member 1 is inserted through the opening at one end of the holder 10, that is, the opening at one end of the first member 20 (the opening on the side of the enlarged diameter portion 25), passed through the inside of the friction member 50, and then inserted out through the opening at the other end of the holder 10 (the opening at the other end of the second member 40 or the friction member 50), thereby positioning the holder 10 around the outer circumference of the elongated member 1.

[0059] Subsequently, the pair of axial grooves 27, 27 of the first member 20 are aligned with the pair of protrusions 7, 7 of the connector 3, and the first member 20 is pushed into the connector 3. Then, the first member 20 is rotated in a predetermined direction relative to the connector 3 to securely fix the first member 20 to the base end side of the connector 3.

[0060] Then, by gripping and fixing the first member 20 and rotating the second member 40 in the R1 direction shown in Figures 3 and 5(b), the tapered portion 57 of the intermediate portion 55 of the friction member 50 deforms spirally (see Figure 6(b)), and the intermediate portion 55 comes into close contact with the outer circumference of the long member 1 (see Figure 6(a)). Subsequently, the tapered portion 57 deforms spirally further (see Figure 7(b)), and the intermediate portion 55 wraps more around the outer circumference of the long member 1, increasing the amount of contact (see Figure 7(a)), allowing the holder 10 to hold the long member 1.

[0061] In this embodiment, the first member 20 is gripped and fixed while the second member 40 is rotated. However, the second member 40 may be gripped and fixed while the first member 20 is rotated, or the second member 40 may be rotated relative to the first member 20.

[0062] Furthermore, as the second member 40 rotates relative to the first member 20, the second anti-rotation projection 45 moves over the first anti-rotation projection 33, causing the first anti-rotation projection 33 to move between the second anti-rotation projection 45 and the over-rotation prevention stopper 47 (see Figure 5(c)). Therefore, even if the second member 40 attempts to rotate in the direction that untwists the intermediate portion 55 of the friction member 50 (rotation in the R2 direction) due to the restoring force of the friction member 50 whose intermediate portion 55 is twisted, the second anti-rotation projection 45 comes into contact with the first anti-rotation projection 33, thus restricting rotation in the direction that untwists.

[0063] As described above, in this holder 10, after positioning the holder 10 on the outer circumference of the long member 1, when the second member 40 is rotated relative to the first member 20, the intermediate portion 55 of the friction member 50 comes into close contact with the outer circumference of the long member 1, holding the long member 1. Furthermore, when rotated relative to the first member 20, the rotation-preventing portions (first rotation-preventing projection 33 and second rotation-preventing projection 45) restrict the rotation of the second member 40 relative to the first member 20 in the direction that would reverse the twist of the friction member 50, thus allowing the long member 1 to be firmly held by the holder 10.

[0064] Furthermore, in this holder 10, by rotating the second member 40 relative to the first member 20, the friction member 50 made of an expandable material twists, and its intermediate portion 55 comes into close contact with the outer circumference of the long member 1, thereby holding the long member 1. This allows for holding the long member 1 while suppressing damage to it.

[0065] Furthermore, by increasing the amount of torsion during the relative rotation of the second member 40 with respect to the first member 20, the intermediate portion 55 of the friction member 50 can be brought into close contact with the outer circumference of the long member 1 even when the long member 1 has a small diameter. This allows for flexible adaptation to changes in the outer diameter of the long member 1, thereby increasing its versatility.

[0066] In addition to the effects described above, the holding force of the holder 10 on the long member 1 can be easily adjusted by the amount of twisting of the friction member 50. Specifically, if the amount of relative rotation of the second member 40 relative to the first member 20 is reduced, the amount of twisting of the friction member 50 is reduced, and the holding force of the holder 10 on the long member 1 can be kept low. On the other hand, if the amount of relative rotation of the second member 40 relative to the first member 20 is increased, the amount of twisting of the friction member 50 is increased, and the holding force of the holder 10 on the long member 1 can be increased.

[0067] Furthermore, to release the holding state of the long member 1 by the holder 10, the following procedure is followed. Specifically, from the state in which the first anti-rotation projection 33 and the second anti-rotation projection 45 are in contact, as shown in Figure 5(c), the first member 20 and the second member 40 are moved to separate in the axial direction. As a result, the contact state between the second anti-rotation projection 45 and the first anti-rotation projection 33 is released, the rotation restriction of the second member 40 in the R2 direction is released, and it can be returned to the state before relative rotation, and the holding state of the long member 1 by the holder 10 can be released.

[0068] Furthermore, in this embodiment, the first member 20 is cylindrical, and the second member 40 is cylindrical and is arranged coaxially with respect to the first member 20.

[0069] According to the above embodiment, since both the first member 20 and the second member 40 are cylindrical, their rigidity can be increased. As a result, when the second member 40 is rotated relative to the first member 20 to twist the intermediate portion 55 of the friction member 50, it becomes easier to grip both members 20 and 40 and to rotate both members 20 and 40.

[0070] Furthermore, since both the first member 20 and the second member 40 are cylindrical, they are easy to manufacture. Moreover, because both the first member 20 and the second member 40 are cylindrical, it becomes easier to accommodate operations such as rotating the second member 40 by more than 360° relative to the first member 20 to twist the friction member 50, and the long member 1 can be held more securely by the holder 10.

[0071] Furthermore, in this embodiment, the holder 10 can be fixed to the insertion portion (base end opening of the connector 3) of the member (sheath 2) through which the long member 1 is inserted.

[0072] According to the above embodiment, as shown in Figure 8, the holder 10 can be fixed to the insertion portion of the member through which the long member 1 is inserted, so that the insertion position of the long member 1 can be fixed with respect to the insertion portion.

[0073] (Second embodiment of a holder for long members) Figure 9 shows a second embodiment of the holder for a long member according to the present invention. Parts substantially identical to those in the previous embodiment are denoted by the same reference numerals, and their descriptions are omitted.

[0074] In this embodiment, the holder 10A for the long member (hereinafter simply referred to as "holder 10A") has slits 35, 49, and 59 formed in the first member 20A, the second member 40A, and the stretchable friction member 50A (hereinafter also simply referred to as "friction member 50A"), extending from one end to the other along the entire length in the axial direction.

[0075] In other words, the first member 20A, the second member 40A, and the friction member 50A each have slits 35, 49, and 59 formed at predetermined locations in their circumferential direction, extending from one end to the other in the extending direction of each member 20A, 40A, and 50A, along their entire axial length.

[0076] Furthermore, each of the slits 35, 49, and 59 is configured to align with each other and allow the long member 1 to be inserted when the second member 40A is rotated relative to the first member 20A.

[0077] According to this embodiment, by aligning the slits 35, 49, and 59 provided in the first member 20A, the second member 40A, and the friction member 50A, the elongated member 1 can be inserted through these slits 35, 49, and 59. Therefore, the holder 10A can be positioned on the outer circumference of the elongated member 1 from the radial side (lateral side) of the elongated member 1, improving workability and convenience when holding the holder 10A to the elongated member 1.

[0078] (Third embodiment of a holder for long members) Figures 10-12 show a third embodiment of the holder for long members according to the present invention. Parts substantially identical to those in the previous embodiments are denoted by the same reference numerals, and their descriptions are omitted.

[0079] The holder 10B for the long member in this embodiment (hereinafter simply referred to as "holder 10B") comprises a first member 20B, a second member 40B, and an expandable friction member 50B (hereinafter also simply referred to as "friction member 50B").

[0080] As shown in Figure 10(a), the first member 20B has a long member insertion slit 37 formed at a predetermined location in its circumferential direction, extending from one end in the extending direction to the other, along the entire length in the axial direction. The long member 1 can be inserted into the first member 20 through this long member insertion slit 37.

[0081] Furthermore, a slit 39 for rotating the second member is formed on one end of the first member 20B, along the circumferential direction of the first member 20B. This slit 39 for rotating the second member is formed on the first member 20 It is formed on one end side of B, in a range extending from a position close to one side along the longitudinal direction of the elongated member insertion slit 37 to a position close to the other side along the longitudinal direction of the elongated member insertion slit 37 (see Figures 10(a) and 11(b)).

[0082] On the other hand, as shown in Figure 10(b), the second member 40B has a main body 41B that is roughly C-shaped and an operating lever 42 that is a projection that protrudes from the outer circumference of one end of the main body 41B in the circumferential direction. The main body 41B of the second member 40B is rotatably positioned on the inner circumference of one end of the first member 20B. The operating lever 42 of the second member 40B is inserted through the internal opening of the second member rotation slit 39 of the first member 20B and inserted out through the external opening of the second member rotation slit 39 (see Figure 11(b)). As a result, the second member 40B can be rotated along the circumferential direction of the first member 20B via the operating lever 42.

[0083] Furthermore, the friction member 50B, like the friction member 50A in the second embodiment, has a slit 59 formed therein (see Figure 10(b)), and as shown in Figure 11(a), one end 51 is fixed to the inner circumference of the other end of the first member 20B, and the other end 53 is fixed to the inner circumference of the main body 41B of the second member 40B.

[0084] In this embodiment, when the first member 20B is gripped and fixed, and the second member 40B is rotated as shown in Figure 11(b), the intermediate portion 55 of the friction member 50B deforms so that spiral folds are formed in the tapered portion 57 (see Figure 11(c)), and the intermediate portion 55 adheres tightly to the outer circumference of the long member 1 (see Figure 11(a)). Further rotation of the second member 40B causes the intermediate portion 55 to deform further so that the folds in the tapered portion 57 increase (see Figure 12(b)), and the intermediate portion 55 wraps more tightly around the outer circumference of the long member 1, increasing the amount of contact (see Figure 12(a)), allowing the holder 10B to hold the long member 1.

[0085] (Fourth embodiment of a holder for long members) Figure 13 shows a fourth embodiment of the holder for a long member according to the present invention. Parts substantially identical to those in the previous embodiments are denoted by the same reference numerals, and their descriptions are omitted.

[0086] The holder 10C for the long member in this embodiment (hereinafter simply referred to as "holder 10C") is used as a torque device for the long medical member 1.

[0087] This holder 10C has basically the same structure as the holder 10A of the second embodiment (with slits 35, 49, and 59 provided in each member 20A, 40A, and 50A), and furthermore, a gripping portion 48 extends from the other end of the second member 40A. In addition, a slit 48a is formed in this gripping portion 48, similar to the second member 40A.

[0088] In this embodiment, the slits 35, 49, 59, and 48a provided in the first member 20A, the second member 40A, the friction member 50A, and the gripping portion 48 are aligned, and after inserting the long member 1 through these slits 35, 49, 59, and 48a, the second member 40A is rotated relative to the first member 20A, thereby allowing the long member 1 to be held by the holder 10C via the friction member 50A.

[0089] In this case, since the gripping portion 48 is positioned on the outer circumference of the long member 1, gripping the gripping portion 48 makes it easier to grip the entire holder 10C, and the holder 10A can be used as a torque device.

[0090] It should be noted that the present invention is not limited to the embodiments described above, and various modified embodiments are possible within the scope of the gist of the present invention, and such embodiments are also included in the scope of the present invention. [Explanation of Symbols]

[0091] 1. Medical-grade long components (long components) 10, 10A, 10B, 10C Medical-grade long component holder (holding device) 20, 20A, 20B First Member 33. First anti-rotation projection (anti-rotation part) 35 slits 40, 40A, 40B Second Member 45. Second anti-rotation projection (anti-rotation part) 48 Gripping part 49 Slits 50, 50A, 50B Stretchable friction member (friction member) 51 one end 53 Other end 55 Middle section 59 Slits

Claims

1. A first member is positioned on the outer circumference of a long medical component, A second member is positioned on the outer circumference of the aforementioned long medical member and is rotatable relative to the first member, The long medical member has an elastic friction member made of an elastic material, which is positioned on the outer circumference of the long medical member and is partially fixed to the first member and the second member. The stretchable friction member twists when the second member is rotated relative to the first member, and the intermediate portion between the fixing portion for the first member and the fixing portion for the second member comes into close contact with the outer circumference of the medical elongated member, holding the medical elongated member. In the state of relative rotation, it has a rotation-preventing portion that restricts the rotation of the second member relative to the first member in the direction that untwists it. The first member, the second member, and the stretchable friction member each have a slit that extends from one end to the other along their entire axial length. A holder for a long medical member, characterized in that each slit is configured to align with each other in the state before the second member is rotated relative to the first member, allowing the long medical member to be inserted.

2. The first member described above is cylindrical in shape, The holder for a long medical member according to claim 1, wherein the second member is cylindrical and is arranged coaxially with respect to the first member.

3. The holder for the long medical member according to claim 1 or 2, wherein the holder for the long medical member is fixable to the insertion portion of the member through which the long medical member is inserted.

4. The holder for the long medical member is used as a torque device for the long medical member, and the first member or the second member is provided with a gripping portion, as described in claim 1 or 2.

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