Ligation release handle and ligation device

Abstract

The utility model provides a loop ligature release handle and a loop ligature device, and relates to the technical field of medical instruments, the loop ligature release handle provided by the utility model comprises a handle support, a reel shaft and a locking piece; the winding wheel shaft is rotationally connected to the handle bracket and is provided with a clamping position; the locking piece is installed on the handle support and detachably matched with the clamping position. The handle support is connected with a handle base, and the handle base is detachably connected with the endoscope. Combined installation of the loop ligature releasing handle and the endoscope is achieved, the reel shaft can be locked so that the loop ligature device can be prevented from being mistakenly touched and released, touch or sound can be generated when the reel shaft is rotated, and therefore a user is reminded whether the loop releasing action is completed or not. In addition, the number of loop ligature rings released by the loop ligature device can be clearly displayed, and clear information feedback is provided for operation of doctors.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a ligation release handle and a ligation device. Background Art

[0002] When releasing the ligature ring under endoscopy, a wire drive is usually used to drive the ligature ring to complete the release, and whether the release action is completed depends on endoscopic observation. However, when the endoscopic visual conditions are limited, it is easy to fail to know whether the release is complete. In addition, during the insertion process and the interval between continuous releases, if the ligature ring is accidentally released, it will cause a medical accident. Utility Model Content

[0003] The utility model aims to provide a ligation release handle and a ligation device, so as to alleviate the technical problem that the ligation release handle is easily released by mistake.

[0004] In a first aspect, the utility model provides a ligature release handle, comprising: a handle bracket, a winding wheel shaft and a locking member;

[0005] The winding wheel shaft is rotatably connected to the handle bracket, and the winding wheel shaft is provided with a clamping position;

[0006] The locking piece is installed on the handle bracket, and the locking piece can be detachably matched with the locking position;

[0007] The handle bracket is connected to the handle base, and the handle base is detachably connected to the endoscope.

[0008] In combination with the first aspect, the utility model provides a first possible implementation of the first aspect, wherein the reel shaft comprises: a roller and a shaft, the roller is mounted on the shaft, and the roller is coaxial with the shaft and positioned along the circumferential direction;

[0009] The roller and / or the shaft rod are provided with a locking position.

[0010] In combination with the first possible implementation of the first aspect, the utility model provides a second possible implementation of the first aspect, wherein the handle bracket or the winding wheel shaft is connected to a limiting member;

[0011] When the locking member is in the locked position, the locking member is engaged with the limiting member to prevent the locking member from being separated from the locked position.

[0012] In combination with the first aspect, the utility model provides a third possible implementation of the first aspect, wherein the handle bracket is provided with a clamping portion, the winding wheel shaft is provided with a plurality of circumferential positioning portions, and the plurality of circumferential positioning portions are arranged at intervals along the circumference of the winding wheel shaft;

[0013] The clamping portion is matched with the circumferential positioning portion, and at least one of them has elasticity, so that the plurality of circumferential positioning portions can be separated and engaged with the clamping portion one by one.

[0014] In combination with the third possible implementation of the first aspect, the utility model provides a fourth possible implementation of the first aspect, wherein at least one of the clamping portion and the circumferential positioning portion has a one-way limiting portion to enable the winding wheel shaft to rotate unidirectionally relative to the handle bracket to wind the pull wire around the winding wheel shaft.

[0015] In combination with the first aspect, the utility model provides a fifth possible implementation of the first aspect, wherein the handle bracket is provided with a pipe joint, the pipe joint is connected to the proximal end of the flexible pipe, and the pipe joint has a wire inlet hole and a water injection hole.

[0016] In a second aspect, the utility model provides a ligation device, comprising: an end cap, a pull line, a ligation ring and the ligation release handle described in the first aspect;

[0017] The tying ring is sleeved on the end cap, one end of the pulling wire is transmission-connected to the tying ring, and the other end of the pulling wire is connected to the winding wheel shaft.

[0018] In combination with the second aspect, the utility model provides a first possible implementation of the second aspect, wherein a flexible tube is connected between the end cap and the handle bracket, and the pull wire extends from the handle bracket through the inner cavity of the flexible tube to the end cap.

[0019] In combination with the second aspect, the utility model provides a second possible implementation of the second aspect, wherein an elastic cap is connected to the proximal end of the end cap, and the elastic cap is detachably mounted on the lens end of the endoscope.

[0020] In combination with the second aspect, the utility model provides a third possible implementation of the second aspect, wherein a plurality of tying rings are sequentially sleeved along the axial direction of the end cap, and the plurality of tying rings are respectively matched with the wire transmission.

[0021] The embodiments of the utility model bring the following beneficial effects: the winding wheel shaft is rotatably connected to the handle bracket, and the winding wheel shaft is provided with a locking position, the locking piece is installed on the handle bracket, and the locking piece is detachable and engaged with the locking position, and the winding wheel shaft can be locked by engaging the locking piece with the locking position, thereby preventing the winding wheel shaft from rotating relative to the handle bracket, thereby preventing the ligation device from being accidentally released.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A cross-sectional view of a ligation release handle provided in an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of a ligation release handle provided in an embodiment of the utility model;

[0026] Figure 3 A cross-sectional view of another ligation release handle provided by an embodiment of the utility model;

[0027] Figure 4 A schematic diagram of another ligation release handle provided in an embodiment of the utility model;

[0028] Figure 5 A schematic diagram of a ligation device provided by an embodiment of the utility model;

[0029] Figure 6 A schematic diagram of a handle bracket and a winding wheel shaft of a ligature release handle provided in an embodiment of the utility model;

[0030] Figure 7 A schematic diagram of a locking member of a ligation device provided in an embodiment of the utility model;

[0031] Figure 8 Schematic diagram of another ligation device provided in an embodiment of the utility model Figure 1 ;

[0032] Fig. 9 Schematic diagram of another ligation device provided in an embodiment of the utility model Figure 2 ;

[0033] Fig.10 This is a partially enlarged schematic diagram of the ligation device provided in an embodiment of the utility model.

[0034] Icons: 001 - end cap; 002 - pull wire; 210 - trigger section; 211 - raised portion; 003 - ligature ring; 004 - elastic cap; 005 - flexible pipe; 006 - handle bracket; 601 - clamping portion; 602 - slot; 603 - pipe joint; 007 - winding wheel shaft; 701 - clamping position; 702 - circumferential positioning portion; 710 - roller; 720 - shaft; 008 - locking piece; 801 - angled clamp block; 802 - first connector; 803 - second connector; 009 - limit piece; 010 - handle base; 011 - endoscope; 111 - proximal end of the endoscope body. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used to describe the difference in names, and cannot be understood as indicating or implying relative importance. The physical quantities in the formula, if not separately marked, should be understood as basic quantities of the basic units of the International System of Units, or derived quantities derived from the basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0037] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two components. The "proximal end" and "distal end" in the text are based on the product operator. The end located outside the body and can be held by hand is the proximal end, and the end that can be implanted in the patient's body and away from the operator is the distal end. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] like Figure 1 , Figure 2 , Figure 4 , Figure 5, Figure 8 and Fig. 9 As shown, the ligature release handle provided by the embodiment of the utility model includes: a handle bracket 006, a winding wheel shaft 007 and a locking member 008; the winding wheel shaft 007 is rotatably connected to the handle bracket 006, and the winding wheel shaft 007 is provided with a locking position 701; the locking member 008 is installed on the handle bracket 006, and the locking member 008 is detachable and matched with the locking position 701.

[0039] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 8 As shown, the handle bracket 006 is connected to the handle base 010, and the handle base 010 is detachably connected to the endoscope 011. The handle base 010 can be detachably connected to the proximal end 111 of the endoscope 011 by means of a hook, an elastic clip or a strap, so as to realize the combined use of the ligature release handle and the endoscope 011.

[0040] The proximal end of the pull wire 002 can be connected and wound on the winding wheel shaft 007. The pull wire 002 can be further wound on the winding wheel shaft 007 by twisting the winding wheel shaft 007, thereby tightening the pull wire 002. The locking member 008 can be detachably connected to the clamping position 701 through a thread, a buckle, etc. When the locking member 008 is matched with the clamping position 701, the winding wheel shaft 007 is locked relative to the handle bracket 006, thereby locking the winding wheel shaft 007. When the pull wire 002 is used to drive the release of the ligation ring 003, the ligation ring 003 is prevented from being accidentally released by locking the winding wheel shaft 007.

[0041] like Figure 1 As shown, in the embodiment of the utility model, the winding wheel shaft 007 includes: a roller 710 and a shaft rod 720, the roller 710 is installed on the shaft rod 720, and the roller 710 and the shaft rod 720 are coaxial and positioned along the circumferential direction; the roller 710 and / or the shaft rod 720 are provided with a clamping position 701.

[0042] The latching position 701 can be set on the roller 710 or the shaft 720, or the roller 710 and the shaft 720 can be provided with the latching position 701. The latching position 701 can be configured as a structure such as a convex block or a slot, and the locking member 008 is fixed relative to the handle bracket 006, and the locking member 008 is matched with the latching position 701, thereby realizing the circumferential locking of the winding wheel shaft 007.

[0043] like Figure 1 and Figure 2 As shown, the handle bracket 006 or the winding wheel shaft 007 is connected to the limiting member 009; when the locking member 008 is engaged with the locking position 701, the locking member 008 is engaged with the limiting member 009 to prevent the locking member 008 from being separated from the locking position 701.

[0044] The locking member 008 is provided with an angled clamping block 801, and the locking member 008 can pass through the handle bracket 006 and be inserted in the clamping position 701, thereby realizing the circumferential locking of the winding wheel shaft 007. In addition, during the insertion and installation of the locking member 008, the angled clamping block 801 contacts the limiting member 009 through the inclined surface. When the locking member 008 is matched with the clamping position 701, the angled clamping block 801 passes over the limiting member 009 and is restricted by the limiting member 009 to return to its original position, thereby realizing the locking of the locking member 008 and preventing the locking member 008 from being loosened.

[0045] In an optional embodiment, a buckle, a positioning pin or a threaded fastener may be used as the limiting member 009 to lock the locking member 008.

[0046] like Figure 3 and Figure 4 As shown, the handle bracket 006 is provided with a clamping portion 601, and the winding wheel shaft 007 is provided with a plurality of circumferential positioning portions 702, and the plurality of circumferential positioning portions 702 are arranged at intervals along the circumference of the winding wheel shaft 007; the clamping portion 601 is adapted to the circumferential positioning portion 702, and at least one of them has elasticity, so that the plurality of circumferential positioning portions 702 can be separated and engaged with the clamping portion 601 one by one.

[0047] Furthermore, the circumferential positioning portion 702 has a snap-in portion 703 extending radially along the winding wheel shaft 007; when the winding wheel shaft 007 rotates in the direction of tightening the pull line 002, the snap-in portion 601 cooperates with the circumferential positioning portion 702 along the snap-in portion 703 to generate a collision warning sound.

[0048] In addition, the reel shaft 007 is provided with a number corresponding to the circumferential positioning portion 702, and the handle bracket 006 is provided with an indication mark pointing to the number. Figure 3 , Figure 4 , Figure 5 and Figure 6 A plurality of numbers are evenly arranged along the circumference of the winding wheel shaft 007 to indicate the number of ligature rings released. The handle bracket 006 is provided with a marking position pointing to the winding wheel shaft 007. When the clamping portion 601 is matched with its circumferential positioning portion 702, the marking position points to the corresponding number so that the doctor can clearly know how many ligature rings have been released.

[0049] When the winding wheel shaft 007 rotates to any circumferential positioning part 702 to match the clamping part 601, the clamping part 601 slides along the snap-in part 703 to the circumferential positioning part 702 to achieve quick matching and generate a collision prompt sound, which will also make the hand operating the winding wheel shaft 007 feel frustrated, and can prompt the operator that the winding wheel shaft 007 has rotated a certain angle. The center angle corresponding to the two adjacent circumferential positioning parts 702 can be adjusted. Each time the clamping part 601 switches to match a circumferential positioning part 702, a release action is achieved, and the corresponding circumferential positioning part 702 is numbered, so that the user can know the number of releases. Through installation and debugging, the winding wheel shaft 007 can be rotated from its circumferential positioning part 702 to the next circumferential positioning part 702 to match the clamping part 601, realizing the switching of the number position corresponding to the indicator mark, and making the distance that the pull line 002 is pulled just enough to remove a ligation ring 003 from the far end of the end cap 001.

[0050] like Figure 3 , Figure 4 and Figure 6 As shown, at least one of the clamping portion 601 and the circumferential positioning portion 702 has a one-way limiting portion, so that the winding wheel shaft 007 can rotate unidirectionally relative to the handle bracket 006 to wind the pull line 002 around the winding wheel shaft 007. The one-way limiting portion can be configured as a ratchet structure, or the one-way limiting portion can be configured as an inclined surface arranged on the clamping portion 601 or the circumferential positioning portion 702, along the circumference of the winding wheel shaft 007, and deflected away from its rotation axis, which can limit the winding wheel shaft 007 to be screwed only in one direction to tighten the pull line 002.

[0051] like Figure 6 and Figure 7 As shown, in an optional embodiment, the locking member 008 may be provided with a first connector 802 and a second connector 803, the first connector 802 may be configured as a cross-shaped structure and adapted to the latch position 701, and the second connector 803 is located outside the first connector 802 and may be inserted into a slot 602 on the handle bracket 006.

[0052] Furthermore, an extension section extending toward the gripping section of the endoscope 011 may be provided at the hand-touch portion of the locking member 008 , and may be tilted and lifted outwardly so as to manually operate the locking member 008 to disengage from the winding wheel shaft 007 .

[0053] like Figure 2 and Figure 8 As shown, in an optional embodiment, the handle bracket 006 is provided with a pipe joint 603, the proximal end of the flexible pipe 005 is connected to the pipe joint 603, and the pipe joint 603 has a wire inlet hole and a water injection hole. Liquid can be infused into the flexible pipe 005 through the water injection hole of the pipe joint 603, and the liquid flows through the flexible pipe 005 to the distal end of the endoscope 011, thereby achieving tissue flushing within the field of view.

[0054] like Figure 5 , Figure 8 , Fig. 9 and Fig.10 As shown, the ligation device provided by the embodiment of the utility model includes: an end cap 001, a pull wire 002, a ligation ring 003 and the ligation release handle recorded in the above embodiment; the ligation ring 003 is sleeved on the end cap 001, one end of the pull wire 002 is transmission-connected to the ligation ring 003, and the other end of the pull wire 002 is connected to the winding wheel shaft 007.

[0055] In an optional embodiment, a plurality of ligating rings 003 are sequentially sleeved along the axial direction of the end cap 001 , and the plurality of ligating rings 003 are respectively matched with the pull wire 002 for transmission.

[0056] Specifically, the pull wire 002 passes through the inner cavity of the end cap 001 from the proximal end to the distal end, and the pull wire 002 extends from the distal end along the outer wall of the end cap 001 to the proximal end to form a trigger section 210; the trigger section 210 is pressed against the inner side of multiple ligature rings 003, and the trigger section 210 is provided with multiple protrusions 211, and the multiple protrusions 211 are arranged at intervals along the trigger section 210, so that the proximal side of each ligature ring 003 has a protrusion 211. When the proximal end of the pull wire 002 is pulled, the pull wire 002 located on the inner side of the end cap 001 slides toward the proximal end, thereby causing the trigger section 210 to slide along the outer wall of the end cap 001 toward the distal end, and the protrusion 211 can push the ligature ring 003 to fall off from the end cap 001 to achieve release and ligation. As the pull wire 002 is pulled, the plurality of ligation loops 003 can be removed one by one by the protrusions 211 , thereby achieving continuous release.

[0057] In the embodiment of the utility model, a flexible pipe 005 is connected between the end cap 001 and the handle bracket 006, and the pull wire 002 extends from the handle bracket 006 to the end cap 001 through the inner cavity of the flexible pipe 005. The flexible pipe 005 can accommodate the pull wire 002 inside, which not only does not need to occupy the endoscope forceps channel, but also can prevent the pull wire 002 from being exposed and causing damage to human tissue. In addition, the flexible pipe 005 is supported between the end cap 001 and the ligation release handle, and the pull wire 002 is pulled by the ligation release handle, and the flexible pipe 005 supports to ensure that the end cap 001 is in a stable position, and the operation is more convenient.

[0058] Furthermore, the proximal end of the end cap 001 is connected to an elastic cap 004, and the elastic cap 004 can be detachably mounted on the distal end of the endoscope 011. The elastic cap 004 can be radially deformed to be tightly mounted on the distal end of the endoscope 011. In addition, through the elastic deformation and bending of the elastic cap 004, the end cap 001 can also be slightly bent relative to the endoscope 011, thereby facilitating insertion into a narrow area.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A ligature release handle, characterized in that: include: A handle bracket (006), a winding wheel shaft (007) and a locking member (008); The winding wheel shaft (007) is rotatably connected to the handle bracket (006), and the winding wheel shaft (007) is provided with a locking position (701); The locking member (008) is mounted on the handle bracket (006), and the locking member (008) is detachably matched with the locking position (701); The handle bracket (006) is connected to a handle base (010), and the handle base (010) is detachably connected to the endoscope (011).

2. The ligation release handle according to claim 1, characterized in that: The winding wheel shaft (007) comprises: a roller (710) and a shaft (720), wherein the roller (710) is mounted on the shaft (720), and the roller (710) and the shaft (720) are coaxial and positioned in the circumferential direction; The roller (710) and / or the shaft (720) are provided with the locking position (701).

3. The ligature release handle according to claim 2, characterized in that: The handle bracket (006) or the winding wheel shaft (007) is connected to a limiting member (009); When the locking member (008) is engaged with the locking position (701), the locking member (008) is engaged with the limiting member (009) to prevent the locking member (008) from being separated from the locking position (701).

4. The ligature release handle according to claim 1, characterized in that: The handle bracket (006) is provided with a clamping portion (601), and the winding wheel shaft (007) is provided with a plurality of circumferential positioning portions (702), and the plurality of circumferential positioning portions (702) are arranged at intervals along the circumference of the winding wheel shaft (007); The clamping portion (601) is matched with the circumferential positioning portion (702), and at least one of them has elasticity, so that the plurality of circumferential positioning portions (702) can be separated and engaged with the clamping portion (601) one by one.

5. The ligature release handle according to claim 4, characterized in that: At least one of the clamping portion (601) and the circumferential positioning portion (702) has a one-way limiting portion, so that the winding wheel shaft (007) can rotate one-way relative to the handle bracket (006) to wind the pull line (002) around the winding wheel shaft (007).

6. The ligature release handle according to claim 1, characterized in that: The handle bracket (006) is provided with a pipe joint (603), the pipe joint (603) is connected to the proximal end of the flexible pipe (005), and the pipe joint (603) has a wire inlet hole and a water injection hole.

7. A ligation device, characterized in that: include: An end cap (001), a pull wire (002), a ligation ring (003), and a ligation release handle as described in any one of claims 1 to 6; The ligating ring (003) is sleeved on the end cap (001), one end of the pulling wire (002) is transmission-connected to the ligating ring (003), and the other end of the pulling wire (002) is connected to the winding wheel shaft (007).

8. The ligation device according to claim 7, characterized in that: A flexible tube (005) is connected between the end cap (001) and the handle bracket (006), and the pull wire (002) extends from the handle bracket (006) through the inner cavity of the flexible tube (005) to the end cap (001).

9. The ligation device according to claim 7, characterized in that: The proximal end of the end cap (001) is connected to an elastic cap (004), and the elastic cap (004) is detachably mounted on the distal end of the endoscope (011).

10. The ligation device according to claim 7, characterized in that: A plurality of ligation rings (003) are sequentially sleeved along the axial direction of the end cap (001), and the plurality of ligation rings (003) are respectively transmission-coordinated with the pull wire (002).

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