Reintroducer wire sleeve

Abstract

This utility model discloses a guidewire retraction sleeve, including a retraction body, a retraction head, and a retraction part. The retraction head and the retraction part are respectively connected to the front end and rear end of the retraction body. An auxiliary pressing area is also provided on the retraction body located between the retraction head and the retraction part. An auxiliary protrusion for supporting the guidewire is connected to the auxiliary pressing area. The top of the auxiliary protrusion has a limiting groove for limiting guidewire movement. The retraction part has a catheter placement groove for placing the catheter body and a retraction opening communicating with the catheter placement groove. The retraction opening is located near the auxiliary pressing area. The retraction head and auxiliary protrusion assist in the retraction and positioning of the guidewire, and the limiting groove further limits guidewire movement, thus facilitating the insertion of the guidewire into the retraction opening.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary equipment technology, and in particular to a guide wire retraction sleeve. Background Technology

[0002] Guidewires are a broad category of medical devices, including microguidewires, guidewires, renal artery guidewires, and angiography guidewires. Based on function, they can be further divided into working guidewires and guidewires for chronic total occlusion (CTO) lesions. Guidewires are one of the fundamental instruments in coronary intervention, used to enter or traverse tortuous, calcified, stenotic, and collateral circulations to reach the target area; to establish a pathway for delivering balloons, stents, and microcatheters; to perform guidewire upgrades or downgrades to open coronary artery occlusions; and to pre-enter coronary artery branches for protection and landmark functions.

[0003] When the catheter reaches the required depth, the guidewire needs to be retracted. Because the guidewire is relatively long and contains blood, it is usually retracted back into its original container. However, due to the narrow opening of the original container, retracting the guidewire can be difficult.

[0004] To address the aforementioned technical problems, a novel deep vein puncture guidewire retrieval device is disclosed in patent document CN201821150218.5. This device comprises a guidewire sheath, a funnel-shaped retrieval end, and a sheath fixing clip. The catheter sheath is a malleable hollow tube, which can be fixed by the clip after shaping. The guidewire can be accommodated within the sheath, and its entry and exit from the sheath occur through the funnel-shaped retrieval end. The deep vein puncture guidewire retrieval device provided by this technical solution increases the contact area for guidewire retrieval by incorporating a funnel-shaped retrieval end into the guidewire sheath, making guidewire retrieval simpler, faster, and more efficient, thereby further improving the efficiency of rescuing critically ill patients.

[0005] However, some problems still exist in actual use. Although the presence of the funnel recovery end increases the diameter of the return port on the return section, the guide wire is thin and long, which causes the tail to sway and is not easy to fix and pass into the return port. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a guide wire retraction sleeve, which can reduce the swaying of the guide wire tail, thereby facilitating the threading of the guide wire into the retraction port.

[0007] According to a first aspect of the present invention, a guidewire retraction sleeve includes a retraction device body, a retraction head, and a retraction part. The retraction head and the retraction part are respectively connected to the front end and the rear end of the retraction device body. An auxiliary pressing area is also provided on the retraction device body located between the retraction head and the retraction part. An auxiliary protrusion for supporting the guidewire is connected to the auxiliary pressing area. The top of the auxiliary protrusion has a limiting groove for limiting the swaying of the guidewire. The retraction part has a catheter placement groove for placing the catheter body and a retraction port communicating with the catheter placement groove. The retraction port is located near the auxiliary pressing area.

[0008] The guide wire retraction sleeve according to the present utility model embodiment has at least the following beneficial effects: the guide wire retraction and positioning are assisted by the retraction head and the auxiliary protrusion, and the guide wire shaking is restricted by the limiting groove, so as to facilitate the guide wire being threaded into the retraction opening.

[0009] According to some embodiments of the present invention, a snap-fit ​​protrusion is connected to the auxiliary pressing area along the length direction of the auxiliary pressing area, and a snap-fit ​​groove adapted to the bottom of the auxiliary protrusion is provided to the snap-fit ​​protrusion, and the auxiliary protrusion snaps into the auxiliary pressing area.

[0010] According to some embodiments of the present invention, when the auxiliary protrusion engages with the auxiliary pressing area, the engaging groove and the engaging protrusion are connected with a clearance fit, and the auxiliary protrusion and the auxiliary pressing area are slidably connected.

[0011] According to some embodiments of the present invention, an auxiliary pressing block is rotatably connected to the upper part of the auxiliary protrusion.

[0012] According to some embodiments of the present invention, a rotating seat is connected to the top of one end of the auxiliary protrusion near the retraction part, and a through hole is opened in the horizontal direction perpendicular to the length direction of the auxiliary pressing area of ​​the auxiliary pressing block. A rotating shaft is connected to the through hole through a torsion spring, and the two ends of the rotating shaft are connected to the rotating seat.

[0013] According to some embodiments of this utility model, the end of the auxiliary pressing block near the retracting part is a rotating end, and the through hole is disposed near the rotating end.

[0014] According to some embodiments of the present invention, the other end of the auxiliary pressing block away from the auxiliary protrusion is a free end, and the bottom of the free end of the auxiliary pressing block is connected to a limiting protrusion that matches the limiting groove.

[0015] According to some embodiments of this utility model, the limiting protrusion is wrapped with a sponge.

[0016] According to some embodiments of the present invention, the retraction part includes a fixed base and an elastic clamping member. The fixed base is connected to the rear end of the retraction device body. One end of the elastic clamping member is connected to one side of the fixed base, and the other end of the elastic clamping member is a free end. It has a conduit inlet and outlet for the conduit to enter and exit between the elastic clamping member and the fixed base. The elastic clamping member and the fixed base together form the conduit placement groove and the retraction port. The inner diameter of the conduit placement groove is adapted to the outer diameter of the conduit body, and the conduit body is inserted into the conduit placement groove.

[0017] According to some embodiments of this utility model, the side of the retraction port near the auxiliary pressing area has a flared structure.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a schematic diagram illustrating the usage scenario of the retractable guide wire sleeve according to an embodiment of this utility model.

[0021] Figure 2 This is a partial structural schematic diagram of the retraction guide wire sleeve according to an embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the auxiliary protrusion of the guide wire sleeve in an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the auxiliary pressing block of the guide wire sleeve according to an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the retraction part of the retraction guide wire sleeve according to an embodiment of the present utility model.

[0025] Figure 6 This is a cross-sectional structural diagram of the retraction part of the retraction guide wire sleeve according to an embodiment of the present utility model.

[0026] 100. Retractor body; 110. Auxiliary pressing area; 111. Snap-fit ​​protrusion; 120. Auxiliary protrusion; 121. Limiting groove; 122. Snap-fit ​​groove; 123. Rotating seat; 130. Auxiliary pressing block; 131. Limiting protrusion; 132. Through hole; 133. Rotating shaft; 134. Sponge; 200. Retractor head; 300. Retractor part; 310. Fixing seat; 311. Arc-shaped protrusion; 320. Elastic clamping element; 330. Retractor opening; 340. Guide tube placement groove; 400. Guide tube body. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, the guide wire retraction sleeve according to an embodiment of the present utility model includes a retraction body 100, a retraction head 200, and a retraction part 300. The retraction head 200 and the retraction part 300 are respectively connected to the front end and the rear end of the retraction body 100. An auxiliary pressing area 110 is also provided on the retraction body 100 located between the retraction head 200 and the retraction part 300. An auxiliary protrusion 120 for supporting the guide wire is connected to the auxiliary pressing area 110. The top of the auxiliary protrusion 120 has a limiting groove 121 for limiting the swaying of the guide wire. The retraction part 300 has a catheter placement groove 340 for placing the catheter body 400 and a retraction port 330 communicating with the catheter placement groove 340. The retraction port 330 is located near the auxiliary pressing area 110.

[0032] In actual use, the guide wire is retracted and positioned by the retraction head 200 and the auxiliary protrusion 120, and then the guide wire is restricted from shaking by the limiting groove 121, so as to facilitate the guide wire being threaded into the retraction port 330.

[0033] In some specific embodiments of this utility model, it may also have the following additional technical features: a snap-fit ​​protrusion 111 is connected on the auxiliary pressing area 110 along the length direction of the auxiliary pressing area 110, and a snap-fit ​​groove 122 adapted to the bottom of the auxiliary protrusion 120 is provided to the snap-fit ​​protrusion 111, and the auxiliary protrusion 120 snaps into the auxiliary pressing area 110.

[0034] In some specific embodiments of this utility model, it may also have the following additional technical features: when the auxiliary protrusion 120 is engaged with the auxiliary pressing area 110, the engaging groove 122 and the engaging protrusion 111 are connected by a clearance fit, and the auxiliary protrusion 120 and the auxiliary pressing area 110 are slidably connected.

[0035] Specifically, when the auxiliary protrusion 120 is connected to the auxiliary pressing area 110, an external force is applied to the auxiliary protrusion 120 to connect the locking groove 122 and the locking protrusion 111, thereby making the auxiliary protrusion 120 and the auxiliary pressing area 110 engage. At the same time, since the locking groove 122 and the locking protrusion 111 are connected with a clearance fit, there is a sliding gap between the auxiliary protrusion 120 and the auxiliary pressing area 110, which allows them to slide. The position of the auxiliary protrusion 120 can be adjusted according to the user's personal needs, making it more convenient and effortless to use.

[0036] In some specific embodiments of this utility model, it may also have the following additional technical features: an auxiliary pressing block 130 is rotatably connected to the upper part of the auxiliary protrusion 120.

[0037] In some specific embodiments of this utility model, it may also have the following additional technical features: a rotating seat 123 is connected to the top of one end of the auxiliary protrusion 120 near the retraction part 300; a through hole 132 is opened in the horizontal direction perpendicular to the length direction of the auxiliary pressing area 110 of the auxiliary pressing block 130; a rotating shaft 133 is connected to the through hole 132 through a torsion spring (not shown in the figure); and both ends of the rotating shaft 133 are connected to the rotating seat 123.

[0038] In some specific embodiments of this utility model, it may also have the following additional technical features: the end of the auxiliary pressing block 130 near the retraction part 300 is a rotating end, and the through hole 132 is provided near the rotating end.

[0039] In some specific embodiments of this utility model, it may also have the following additional technical features: the other end of the auxiliary pressing block 130 away from the auxiliary protrusion 120 is a free end, and the bottom of the free end of the auxiliary pressing block 130 is connected to a limiting protrusion 131 that is adapted to the limiting groove 121.

[0040] With the above design, in the initial state, i.e., when no external force is applied to the auxiliary pressing block 130, the free end of the auxiliary pressing block 130 is raised to form a larger opening for easy insertion of the guide wire, while the rotating end of the auxiliary pressing block 130 abuts against the auxiliary protrusion 120. After the guide wire is inserted, by applying external force to the free end of the auxiliary pressing block 130 to press it against the spring force of the torsion spring, the free end of the auxiliary pressing block 130 moves towards the auxiliary protrusion 120, causing the opening to narrow. The rotating end of the auxiliary pressing block 130 will lift up and move away from the auxiliary protrusion 120, thereby forming a gap that allows the guide wire to pass through. The presence of the limiting protrusion 131 forces the guide wire to move towards the position of the limiting groove 121 until the guide wire is clamped by the limiting protrusion 131 and the limiting groove 121. At this time, by applying external force... Applying force by sliding the auxiliary protrusion 120 with a finger causes the guidewire to move towards the retraction section 300. After moving a certain distance, the applied force is reduced. At this time, due to the elasticity of the torsion spring, the auxiliary pressing block 130 is slightly reset. At this time, there are gaps between the two ends of the auxiliary pressing block 130 and the two ends of the auxiliary protrusion 120, allowing the guidewire to pass through. Then, using a finger, the auxiliary protrusion 120 is moved closer to the retraction head 200, so that the guidewire passes through the gap between the rotating end of the auxiliary pressing block 130 and the auxiliary protrusion 120. Then, the above operation is repeated until the guidewire enters the catheter body 400 in the retraction section 300 to complete the retraction. At this time, due to the presence of the auxiliary pressing block 130 and the auxiliary protrusion 120, the guidewire can be further restricted, so that the retraction can be completed more conveniently and quickly.

[0041] In some specific embodiments of this utility model, it may also have the following additional technical features: a sponge 134 is wrapped and connected to the limiting protrusion 131. Specifically, the sponge 134 is a disposable medical sponge 134. By setting the sponge 134 in conjunction with the smaller limiting protrusion 131, the sponge 134 itself has a certain elasticity and a relatively rough surface, thus having good friction performance. This allows it to adapt to more types and sizes of guidewires. At the same time, the good friction performance of the sponge 134 can further limit the swaying of the guidewire. During the movement, the sponge 134 can also absorb dirt on the guidewire, resulting in a very good performance.

[0042] In some specific embodiments of this utility model, it may also have the following additional technical features: the retraction part 300 includes a fixed base 310 and an elastic clamping member 320. The fixed base 310 is connected to the rear end of the retraction device body 100. One end of the elastic clamping member 320 is connected to one side of the fixed base 310. The other end of the elastic clamping member 320 is a free end and has a conduit inlet and outlet for the conduit to enter and exit between it and the other side of the fixed base 310. The elastic clamping member 320 and the fixed base 310 enclose each other to form a conduit placement groove 340 and a retraction port 330. The inner diameter of the conduit placement groove 340 is adapted to the outer diameter of the conduit body 400, and the conduit body 400 is inserted into the conduit placement groove 340.

[0043] Specifically, the elastic clamping member 320 is an arc-shaped elastic clamping arm. There is a gap between the elastic clamping arm and the side of the fixing seat 310 to form a catheter inlet / outlet for the catheter body 400 to enter and exit. The fixing seat 310 has an arc-shaped protrusion 311 on the catheter inlet / outlet side of the elastic clamping member 320. The outer side of the arc-shaped protrusion 311 has an arc-shaped edge facing the catheter placement groove 340. The highest point of the arc-shaped protrusion 311 is set close to the catheter placement groove 340. The existence of the arc-shaped edge can further reduce the difficulty of inserting the catheter body 400. On the other hand, since the highest point of the arc-shaped protrusion 311 is set close to the placement groove, when the catheter body 400 wants to get out of the placement groove, it must first pass over the highest point of the arc-shaped protrusion 311 to get out, which also increases the difficulty of getting out, that is, improves the overall firmness.

[0044] In some specific embodiments of this utility model, it may also have the following additional technical features: the side of the retraction port 330 near the auxiliary pressing area 110 is a flared structure.

[0045] The flared mouth structure has a larger inlet diameter, making guidewire retraction simpler, faster, and more efficient.

[0046] Work process:

[0047] In the initial state, i.e., when no external force is applied to the auxiliary pressing block 130, the free end of the auxiliary pressing block 130 is raised to form a larger opening for easy insertion of the guide wire, while the rotating end of the auxiliary pressing block 130 abuts against the auxiliary protrusion 120. After the guide wire is inserted, by applying external force to the free end of the auxiliary pressing block 130 to press it against the spring force of the torsion spring, the free end of the auxiliary pressing block 130 moves towards the auxiliary protrusion 120, causing the opening to narrow. The rotating end of the auxiliary pressing block 130 will lift up and move away from the auxiliary protrusion 120, thereby forming a gap that allows the guide wire to pass through. The presence of the limiting protrusion 131 forces the guide wire to move towards the limiting groove 121 until the guide wire is clamped by the limiting protrusion 131 and the limiting groove 121. At this time, by applying force... Slide your finger on the auxiliary protrusion 120 to move the guidewire toward the retraction section 300. After moving a certain distance, reduce the applied force. At this time, the spring force of the torsion spring causes the auxiliary pressing block 130 to slightly reset. At this time, there are gaps between the two ends of the auxiliary pressing block 130 and the two ends of the auxiliary protrusion 120 to allow the guidewire to pass through. Then, use your finger to move the auxiliary protrusion 120 toward the retraction head 200 so that the guidewire passes through the gap between the rotating end of the auxiliary pressing block 130 and the auxiliary protrusion 120. Then, repeat the above operation until the guidewire enters the catheter body 400 in the retraction section 300 to complete the retraction. At this time, due to the presence of the auxiliary pressing block 130 and the auxiliary protrusion 120, the guidewire can be further restricted, so that the retraction can be completed more conveniently and quickly.

[0048] The above structure is suitable for novice users with little experience in guidewire retraction. For experienced users with extensive experience in guidewire retraction, an auxiliary protrusion 120 with a limiting groove 121 structure but without the auxiliary pressing block 130 can be used in conjunction, which is more convenient and intuitive.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A retraction guide wire sleeve, characterized in that, The device includes a retractor body (100), a retractor head (200), and a retractor section (300). The retractor head (200) and the retractor section (300) are respectively connected to the front end and the rear end of the retractor body (100). An auxiliary pressing area (110) is also provided on the retractor body (100) located between the retractor head (200) and the retractor section (300). An auxiliary protrusion (120) for supporting the guidewire is connected to the auxiliary pressing area (110). The top of the auxiliary protrusion (120) has a limiting groove (121) for limiting the swaying of the guidewire. The retractor section (300) has a catheter placement groove (340) for placing the catheter body (400) and a retractor port (330) communicating with the catheter placement groove (340). The retractor port (330) is located close to the auxiliary pressing area (110).

2. The guide wire retraction sleeve according to claim 1, characterized in that, The auxiliary pressing area (110) is connected with a snap-fit ​​protrusion (111) along the length direction of the auxiliary pressing area (110), and the bottom of the auxiliary protrusion (120) is adapted to have a snap-fit ​​groove (122) adapted to the snap-fit ​​protrusion (111), and the auxiliary protrusion (120) snaps into the auxiliary pressing area (110).

3. The guide wire retraction sleeve according to claim 2, characterized in that, When the auxiliary protrusion (120) engages with the auxiliary pressing area (110), the engaging groove (122) and the engaging protrusion (111) are connected with a clearance fit, and the auxiliary protrusion (120) and the auxiliary pressing area (110) are slidably connected.

4. The guide wire retraction sleeve according to claim 3, characterized in that, An auxiliary pressing block (130) is also rotatably connected to the auxiliary protrusion (120).

5. The guide wire retraction sleeve according to claim 4, characterized in that, The auxiliary protrusion (120) is connected to a rotating seat (123) at the top of one end near the retracting part (300). The auxiliary pressing block (130) has a through hole (132) in the horizontal direction perpendicular to the length direction of the auxiliary pressing area (110). A rotating shaft (133) is connected to the through hole (132) through a torsion spring. Both ends of the rotating shaft (133) are connected to the rotating seat (123).

6. The guide wire retraction sleeve according to claim 5, characterized in that, The auxiliary pressing block (130) has a rotating end near the retracting part (300), and the through hole (132) is located near the rotating end.

7. The guide wire retraction sleeve according to claim 6, characterized in that, The other end of the auxiliary pressing block (130) away from the auxiliary protrusion (120) is a free end, and the bottom of the free end of the auxiliary pressing block (130) is connected to a limiting protrusion (131) that is adapted to the limiting groove (121).

8. The guide wire retraction sleeve according to claim 7, characterized in that, The limiting protrusion (131) is wrapped with a sponge (134).

9. The guide wire retraction sleeve according to claim 1, characterized in that, The retraction part (300) includes a fixed base (310) and an elastic clamping member (320). The fixed base (310) is connected to the rear end of the retraction device body (100). One end of the elastic clamping member (320) is connected to one side of the fixed base (310). The other end of the elastic clamping member (320) is a free end and has a conduit inlet and outlet for conduit entry and exit between it and the other side of the fixed base (310). The elastic clamping member (320) and the fixed base (310) enclose and form the conduit placement groove (340) and the retraction port (330). The inner diameter of the conduit placement groove (340) is adapted to the outer diameter of the conduit body (400). The conduit body (400) is inserted into the conduit placement groove (340).

10. The guide wire retraction sleeve according to claim 9, characterized in that, The side of the retraction port (330) near the auxiliary pressing area (110) has a flared structure.

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