Medical instrument wire wheel, wire control handle and ligation device

Abstract

The utility model provides a kind of medical instrument line wheel, line control handle and ligation device, it is related to medical instrument technical field.The medical instrument line wheel is equipped with wire slot and multiple clamping positions;Wire slot extends along the circumference of medical instrument line wheel;Multiple clamping positions are spaced apart along the circumference of medical instrument line wheel and are separated from wire slot.Not only can the pull wire be restricted in wire slot, avoid the axial deviation of pull wire relative to medical instrument line wheel, but also can avoid the deviation of pull wire to the position of clamping position, further avoid the rotation of medical instrument line wheel to be blocked.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a medical device thread reel, thread control handle and ligation device. Background Technology

[0002] To extend the control transmission path, medical devices typically employ a cable structure extending from the handle end to the actuator end for power transmission. To ensure control precision, the selected cable needs to have low elongation. However, this characteristic reduces the cable's flexibility, making it difficult to achieve a tight fit with the circumferential surface of the reel. This can lead to axial misalignment of the cable relative to the reel during winding. Such situations directly affect control precision and may cause technical malfunctions such as reel rotational stagnation. Utility Model Content

[0003] The purpose of this invention is to provide a medical device thread reel, thread control handle, and ligation device to alleviate the technical problem in the prior art where the thread of a medical device is easily misaligned relative to the thread reel.

[0004] Firstly, the medical device thread reel provided by this utility model has a thread groove and multiple locking positions; The groove extends circumferentially along the medical device reel; The multiple slots are spaced apart circumferentially along the medical device reel and separated from the groove.

[0005] In conjunction with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the inner circumferential surface of the groove is provided with a first hole and a second hole; The first hole and the second hole are spaced apart and connected by a wire hole.

[0006] In conjunction with the first possible implementation of the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the inner circumferential surface of the wire groove is provided with a notch groove extending from the first hole to the second hole and communicating with the wire hole.

[0007] In conjunction with the first possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein at least one of the first hole and the second hole is configured as a countersunk hole.

[0008] In conjunction with the first aspect, this utility model provides a fourth possible implementation of the first aspect, wherein the locking position includes a limiting groove disposed on the circumferential surface of the medical device reel.

[0009] In conjunction with the fourth possible implementation of the first aspect, this utility model provides a fifth possible implementation of the first aspect, wherein, along the circumferential direction of the medical device thread wheel, the limiting groove is located between the first wall surface and the second wall surface; The first wall surface is inclined from the inside out in the radial direction of the medical device reel, away from the second wall surface.

[0010] In conjunction with the first aspect, this utility model provides a sixth possible implementation of the first aspect, wherein the medical device reel is coaxially provided with a shaft hole, and the sidewall of the shaft hole is provided with a circumferential limiting part.

[0011] Secondly, the wired control handle provided by this utility model includes: a handle holder, a pull wire, and the medical device wire reel described in the first aspect; The medical device reel is rotatably connected to the handle frame, and the pull wire is wound inside the wire groove.

[0012] In conjunction with the second aspect, the draw wire includes a metal wire.

[0013] Thirdly, the ligator provided by this utility model is equipped with the medical device thread reel described in the first aspect, or the ligator is equipped with the wire control handle described in the second aspect.

[0014] The present invention provides the following beneficial effects: the medical device thread reel is equipped with a thread groove and multiple locking positions. The thread groove extends circumferentially along the medical device thread reel, and the multiple locking positions are spaced apart circumferentially along the medical device thread reel and separated from the thread groove. This not only confines the pull wire within the thread groove, preventing the pull wire from shifting axially relative to the medical device thread reel, but also prevents the shifted pull wire from moving to the location of the locking positions or the outer area of ​​the thread reel, thereby preventing the medical device thread reel from experiencing rotational obstruction or stopping of rotation.

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the medical device thread reel provided in the embodiments of this utility model. Figure 1 ; Figure 2A cross-sectional view of a medical device thread reel provided in an embodiment of this utility model; Figure 3 A schematic diagram of the medical device thread reel provided in the embodiments of this utility model. Figure 2 ; Figure 4 A schematic diagram of a wired control handle provided for an embodiment of this utility model; Figure 5 This is a schematic diagram of another wired handle provided in an embodiment of the present utility model.

[0018] Icons: 100-Medical instrument thread reel; 101-Thread groove; 102-Card slot; 103-First hole; 104-Second hole; 105-Thread hole; 106-Notch groove; 107-Shaft hole; 108-Circumferential limiting part; 121-Limiting groove; 122-First wall surface; 123-Second wall surface; 200-Handle holder; 300-Pull cable. Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are only used to describe differences in name and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the medical device thread reel 100 provided in this embodiment of the present invention is provided with a thread groove 101 and a plurality of locking positions 102; the thread groove 101 extends circumferentially along the medical device thread reel 100; the plurality of locking positions 102 are spaced apart circumferentially along the medical device thread reel 100 and are separated from the thread groove 101.

[0023] The medical device thread reel 100 is rotatably connected to the handle holder 200. The handle holder 200 can be equipped with a limiting member adapted to the locking position 102, thereby locking and limiting the rotation of the medical device thread reel 100. Alternatively, the limiting member can be configured as an elastic device. When the external force rotating the medical device thread reel 100 overcomes the elastic force of the elastic device, the elastic device can disengage from one of its locking positions 102. As the medical device thread reel 100 continues to rotate, the elastic device will re-engage with the other locking position 102.

[0024] In an optional implementation, the limiting member can be engaged with each locking position 102 to perform a corresponding action at the working end of the instrument. For example, when the limiting member engages with one locking position 102 from another locking position 102, the medical instrument thread reel 100, by winding a pull wire 300, uses the pull wire 300 to drive the release of one ligature. Furthermore, a numerical indicator corresponding to the number of ligatures can be added to the medical instrument thread reel 100.

[0025] It should be noted that the pull cable 300 is confined within the cable groove 101, which prevents excessive axial wobble of the pull cable 300 wound on the medical device spool 100. When the medical device spool 100 rotates a certain angle (with the limiting member engaging with the other locking position from one of its locking positions 102), the medical device spool 100 pulls the pull cable 300 a certain distance, ensuring more precise pulling distance of the pull cable 300, thereby improving the accuracy of control over the working end of the device.

[0026] See Figure 1 , Figure 2 , Figure 4 and Figure 5 In this embodiment of the utility model, the inner circumferential surface of the wire groove 101 is provided with a first hole 103 and a second hole 104; the first hole 103 and the second hole 104 are spaced apart and connected through the wire hole 105.

[0027] The pull wire 300 can be inserted through either the first hole 103 or the second hole 104, pass through the wire hole 105, and then exit through the other of the first hole 103 and the second hole 104. A protrusion with a diameter larger than that of the wire hole 105 is provided at the end of the pull wire 300 to prevent the pull wire 300 from loosening and falling off relative to the medical device thread wheel 100.

[0028] Furthermore, a notch 106 is provided on the inner circumferential surface of the wire groove 101, extending from the first hole 103 to the second hole 104 and communicating with the wire hole 105. The diameter of the pull wire 300 is close to the width of the notch 106, allowing the pull wire 300 to be inserted into the wire hole 105 through the notch 106. When the medical device spool 100 is rotated and the pull wire 300 is tensioned, the protrusion at the end of the pull wire 300 is pulled and secured at the first hole 103, while the pull wire 300 extending through the second hole 104 winds around the inner circumferential surface of the wire groove 101 as the medical device spool 100 rotates.

[0029] Furthermore, at least one of the first hole 103 and the second hole 104 is configured as a countersunk hole, which can be configured as a tapered structure. The protrusion at the end of the pull wire 300 can fit into the countersunk hole at the first hole 103, thereby preventing the pull wire 300 wound around the inner circumferential surface of the wire groove 101 from undulating radially on the medical device reel 100. Alternatively, the second hole 104 can also be configured as a countersunk hole. The pull wire 300, which extends from the wire hole 105 through the second hole 104, is wound around the inner circumferential surface of the wire groove 101 through the countersunk hole. The extension of the pull wire 300 from the second hole 104 to the inner circumferential surface of the wire groove 101 is smoother, and the pull wire 300 fits more tightly with the inner circumferential surface of the wire groove 101.

[0030] In an optional embodiment, the inner ring of the medical device thread reel 100 may be provided with a bearing to ensure its smooth rotation, and a one-way bearing or other device may also be provided to restrict the rotation direction of the medical device thread reel 100, so that the medical device thread reel 100 can only rotate in the direction of winding and tightening the pull line 300.

[0031] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in an optional embodiment, the locking position 102 includes a limiting groove 121 disposed on the circumferential surface of the medical device thread reel 100. The limiting member mounted on the handle holder 200 can be a spring clip or a spring plunger, etc., which, by being inserted into the limiting groove 121, restricts the rotation of the medical device thread reel 100. When the external force rotating the medical device thread reel 100 is sufficient to overcome the elastic force of the limiting member, the limiting member will disengage from the limiting groove 121. If the medical device thread reel 100 continues to rotate, the limiting member will again engage with another limiting groove 121, thereby locking the medical device thread reel 100 again.

[0032] Furthermore, along the circumferential direction of the medical device thread wheel 100, the limiting groove 121 is located between the first wall surface 122 and the second wall surface 123; the first wall surface 122 is inclined from the inside out in the radial direction of the medical device thread wheel 100 toward the direction away from the second wall surface 123.

[0033] See Figure 3 When the medical device spool 100 is driven to rotate and the limiting member is pressed against the first wall surface 122, the first wall surface 122 will press the limiting member away from the axis of the medical device spool 100, thereby causing the limiting member to disengage from the limiting groove 121; conversely, if the medical device spool 100 is driven to rotate in the opposite direction, the limiting member will abut against the second wall surface 123, thereby preventing the medical device spool 100 from rotating, thus achieving unidirectional rotational limiting of the medical device spool 100.

[0034] like Figure 3 , Figure 4 and Figure 5 The medical device thread reel 100 is coaxially provided with a shaft hole 107, and a circumferential limiting part 108 is provided on the side wall of the shaft hole 107. A shaft rod can be connected to the shaft hole 107 of the medical device thread reel 100, and a knob is fixedly connected to the end of the shaft rod. The circumferential limiting part 108 can be configured as a flat key, spline, or other structure to circumferentially limit the medical device thread reel 100 relative to the shaft rod. Manually turning the knob can drive the medical device thread reel 100 to rotate, thereby winding the pull wire 300 around the medical device thread reel 100 to achieve the tightening operation of the pull wire 300.

[0035] like Figure 1 , Figure 4 and Figure 5 As shown, the wired handle provided in this embodiment of the present invention includes: a handle frame 200, a pull cable 300, and a medical device reel described in the above embodiment; the medical device reel 100 is rotatably connected to the handle frame 200, and the pull cable 300 is wound in the cable groove 101.

[0036] With the pull wire 300 confined within the groove 101, it can be ensured that the pull wire 300 is tightly fitted to the inner circumferential surface of the groove 101, reducing the magnitude of the pull wire 300's axial displacement on the medical device spool 100. This is especially suitable for pull wires 300 with low elongation and containing metal wires, which can improve the accuracy of controlling the pull wire 300. Furthermore, it can prevent the pull wire 300 from shifting to the locking position 102, causing the rotation of the medical device spool 100 to be hindered.

[0037] The ligation device in this embodiment is equipped with the medical device thread reel 100 or the thread control handle provided in the above embodiment, and has the technical effects of the medical device thread reel 100 and the thread control handle, which will not be described in detail here.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A medical device thread reel, characterized in that, The medical device reel (100) is provided with a thread groove (101) and multiple locking positions (102); The groove (101) extends circumferentially along the medical device reel (100); Multiple slots (102) are arranged circumferentially along the medical device reel (100) and separated from the groove (101).

2. The medical device thread reel according to claim 1, characterized in that, The inner circumferential surface of the groove (101) is provided with a first hole (103) and a second hole (104). The first hole (103) and the second hole (104) are spaced apart and connected by a wire hole (105).

3. The medical device thread reel according to claim 2, characterized in that, The inner circumferential surface of the groove (101) is provided with a notch (106) extending from the first hole (103) to the second hole (104) and communicating with the wire hole (105).

4. The medical device thread reel according to claim 2, characterized in that, At least one of the first hole (103) and the second hole (104) is configured as a countersunk hole.

5. The medical device thread reel according to claim 1, characterized in that, The locking position (102) includes a limiting groove (121) disposed on the circumferential surface of the medical device reel (100).

6. The medical device thread reel according to claim 5, characterized in that, Along the circumferential direction of the medical device reel (100), the limiting groove (121) is located between the first wall surface (122) and the second wall surface (123); The first wall surface (122) is inclined from the inside out in the radial direction of the medical device reel (100) away from the second wall surface (123).

7. The medical device thread reel according to claim 1, characterized in that, The medical device reel (100) is coaxially provided with a shaft hole (107), and the side wall of the shaft hole (107) is provided with a circumferential limiting part (108).

8. A wired control handle, characterized in that, include: Handle holder (200), pull cable (300), and medical device reel as described in any one of claims 1-7; The medical device reel (100) is rotatably connected to the handle frame (200), and the pull wire (300) is wound in the wire groove (101).

9. The remote control handle according to claim 8, characterized in that, The draw wire (300) comprises a metal wire.

10. A ligation device, characterized in that, The ligator is equipped with a medical device thread reel as described in any one of claims 1 to 7, or the ligator includes a wire-controlled handle as described in claim 8 or 9.

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