Bendable hemostatic clip

Abstract

The utility model relates to the technical field of medical instruments, and discloses a bendable hemostatic clip which comprises a handle, the handle is provided with a containing cavity, a hand ring capable of sliding in the axial direction of the handle is arranged on the handle, and a part of the hand ring is arranged in the containing cavity; the outer sheath tube is connected to one end of the handle; one end of the inner sheathing canal is arranged in the outer sheathing canal in a penetrating manner, the other end of the inner sheathing canal extends out of the outer sheathing canal, the inner sheathing canal can rotate relative to the outer sheathing canal, and the other end of the inner sheathing canal can be bent; the pull rod sequentially penetrates through the containing cavity and the inner sheath tube, one end of the pull rod is fixedly connected to the portion, located in the containing cavity, of the bracelet, the other end of the pull rod is connected with a detachable clamp, and the pull rod can be driven by the bracelet to stretch out and draw back relative to the inner sheath tube so as to open or clamp the clamp. The driving assembly is installed on the outer sheath tube and used for driving the inner sheath tube to rotate and bend, and then the clamp is driven to bend in different directions. The hemostatic clip can be bent towards target positions in different directions, and is simple and easy to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a bendable hemostatic clamp. BACKGROUND

[0002] With the development of endoscopic technology and other related technologies, endoscopic hemostasis has become the preferred treatment method for the treatment of gastrointestinal bleeding. The commonly used endoscopic hemostasis methods at present include laser coagulation, electrocoagulation, local injection drug hemostasis, drug spraying and hemostatic clamp clipping, etc. Among them, the hemostatic clamp clipping method has become the most effective and most clinically valuable method for non-surgical treatment of gastrointestinal bleeding due to its small trauma, fast hemostasis speed, low rebleeding rate, few complications and definite effect. In addition, after the resection of early cancer of the digestive tract and submucosal tumors under the digestive endoscope, partial or complete closure of the surgical wound is often required, and the hemostatic clamp becomes the preferred method for closing the wound.

[0003] Since the front end of the hemostatic clamp on the market is straight, it cannot be bent. When the wound is located opposite the front end of the endoscope during treatment under the endoscope, the hemostatic clamp can easily close the wound. However, when the wound is in a poor position, such as a tangential position of the front end of the endoscope, it is difficult for the hemostatic clamp to close the wound. Comprehensive measures such as adjusting the amount of gas in the digestive tract lumen, rotating and bending the front end of the endoscope, and changing the patient's body position need to be taken to place the hemostatic clamp in the ideal position and achieve effective wound closure. Especially when the front end of the endoscope is located in the curved part of the digestive tract lumen, such as the duodenal bulb, the descending duodenum, the sigmoid colon, and the ileocecal region, it is difficult to keep the front end of the endoscope stable. It is difficult to place the hemostatic clamp in the ideal angle by rotating and bending the front end of the endoscope, which is not convenient for clinical use. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above technical problems, the present application provides a bendable hemostatic clamp, which can bend the hemostatic clamp without rotating and bending the endoscope, is simple and easy to operate, and can ensure that the clamp is placed in the ideal position to effectively close the wound.

[0005] The present application provides a bendable hemostatic clamp, comprising:

[0006] a handle provided with a containing cavity, the handle being provided with a hand ring slidable along the axial direction thereof, the hand ring being partially accommodated in the containing cavity, the handle being further provided with a rotation driving member rotatable about the axis thereof;

[0007] an outer sheath tube connected to one end of the handle;

[0008] an inner sheath tube, one end of which is provided in the outer sheath tube and the other end of which extends out of the outer sheath tube, the inner sheath tube being rotatable relative to the outer sheath tube, and the other end of the inner sheath tube being bendable;

[0009] A pull rod is sequentially arranged in the accommodating cavity and the inner sheath tube, one end of the pull rod is fixedly connected to the part of the bracelet located in the accommodating cavity, the other end of the pull rod is connected with a detachable clamp, the pull rod can be stretched and contracted relative to the inner sheath tube to open or clamp the clamp under the driving of the bracelet, the other end of the pull rod can be bent with the inner sheath tube, and the part of the pull rod located in the accommodating cavity is connected to the rotary driving member and driven to rotate by the rotary driving member.

[0010] A driving assembly is installed in the outer sheath tube, and the driving assembly is used to drive the inner sheath tube to rotate and bend.

[0011] As a preferred technical solution, the inner sheath tube comprises a support tube and a serpentine tube connected to the support tube, the support tube can be driven to rotate by the driving assembly, the serpentine tube can be driven to bend by the driving assembly, and the other end of the pull rod is arranged in the serpentine tube and can be bent with the serpentine tube.

[0012] As a preferred technical solution, the driving assembly comprises a rotating shaft, a chain wheel and a chain, the rotating shaft is arranged in the outer sheath tube along the radial direction of the outer sheath tube and can rotate relative to the outer sheath tube, the chain wheel is fixedly arranged on one end of the rotating shaft located in the outer sheath tube, and the chain is drivingly connected to the chain wheel.

[0013] Two rows of wire passing holes are arranged on the outer peripheral wall of the serpentine tube, and two free ends of the chain are fixedly connected to the end edges of the serpentine tube by respectively passing through the two rows of wire passing holes.

[0014] As a preferred technical solution, the outer sheath tube is provided with an arc-shaped hole in the circumferential direction, the rotating shaft is arranged in the arc-shaped hole and can rotate along the arc-shaped hole.

[0015] A rotating sleeve is fixedly arranged on the rotating shaft, two connecting members fixedly connected to the rotating sleeve are symmetrically arranged on the end of the inner sheath tube, and the rotating shaft can drive the inner sheath tube to rotate through the rotating sleeve and the connecting members when the rotating shaft rotates along the arc-shaped hole.

[0016] As a preferred technical solution, a first magnetic attraction member is fixedly arranged on the rotating shaft, a second magnetic attraction member is arranged on the inner wall of the outer sheath tube located on both sides of the arc-shaped hole, the first magnetic attraction member is configured to be attracted to the second magnetic attraction member to fix the position of the rotating shaft, and / or the inner walls on both sides of the arc-shaped hole are provided with a plurality of grooves arranged in a sawtooth shape, the rotating shaft arranged in the arc-shaped hole on both sides is provided with a mounting groove, the mounting groove is provided with a spring and a clamping portion connected to one end of the spring, and the clamping portion is clamped in any one of the grooves.

[0017] As a preferred technical solution, a wire passing groove is arranged on the outer wall of the support tube along the axial direction of the support tube for the chain to pass through.

[0018] As a preferred technical solution, a rotating handle is fixedly connected to one end of the rotating shaft outside the outer sheath.

[0019] As a preferred technical solution, a disengaging assembly is arranged between the other end of the pull rod and the clamp, and the disengaging assembly is configured to disengage the clamp from the pull rod.

[0020] As a preferred technical solution, the pull rod is provided with a connecting frame and an inner sleeve, the connecting frame is rotatably connected to the clamp through a shaft, one end of the connecting frame is provided with an opening, and the other end of the connecting frame is fixedly connected to the inner sleeve.

[0021] The disengaging assembly includes a first clamping sleeve and a second clamping sleeve, the clamp is rotatably connected to a connecting pipe sleeved outside the clamp through a pin shaft, the connecting pipe is fixedly connected to the first clamping sleeve, the first clamping sleeve is sleeved outside the second clamping sleeve, one end of the first clamping sleeve is provided with a first clamping piece, both ends of the second clamping sleeve are respectively provided with a first clamping part and a second clamping part, the first clamping part is clamped to the first clamping piece, the second clamping part is clamped to a second clamping piece at the end of the inner sheath, and the inner sleeve is arranged in the connecting pipe and the second clamping sleeve.

[0022] When the pull rod is pulled, the connecting frame is disengaged from the clamp through the opening, at the same time, the inner sleeve pushes the second clamping sleeve to move away from the clamp, so that the first clamping part is disengaged from the first clamping piece, and the clamp is disengaged from the pull rod.

[0023] The technical scheme provided by the embodiment of the present application has the following advantages compared with the prior art: the pull rod of the present application can be stretched and contracted relative to the inner sheath under the driving of the bracelet, thereby realizing the opening and clamping of the clamp, and through the bending of the inner sheath, the other end of the pull rod and the clamp can be bent synchronously with the inner sheath, that is, the closure of the two opposite wound surfaces at the front end of the endoscope can be realized; in addition, by moving the rotating shaft to different positions in the arc-shaped hole, the inner sheath is synchronously rotated, and in combination with the bending of the inner sheath under the driving of the driving assembly, the bending of the clamp in multiple directions can be realized, thereby improving the application range of the present application. Moreover, the present application is simple and easy to operate, can ensure that the clamp is placed in an ideal position, and effectively closes the wound surface. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings are only for the purpose of illustrating the embodiments of the present application and the prior art, and the person of ordinary skill in the art can obtain other drawings based on these drawings without any creative effort.

[0026] Figure 1 A perspective view of the flexible hemostat clip of the embodiment of the present application;

[0027] Figure 2 A sectional view of the driving assembly of the embodiment of the present application;

[0028] Figure 3 A sectional view of the driving assembly of the embodiment of the present application in the first working state;

[0029] Figure 4 A sectional view of the driving assembly of the embodiment of the present application in the second working state;

[0030] Figure 5 A perspective view of the driving assembly of the embodiment of the present application;

[0031] Figure 6 A perspective view of the driving assembly, the inner sheath and the releasing assembly of the embodiment of the present application;

[0032] Figure 7 A perspective view of the driving assembly, the inner sheath and the releasing assembly of the embodiment of the present application;

[0033] Figure 8 A perspective view of the releasing assembly of the embodiment of the present application;

[0034] Figure 9 A perspective view of the releasing assembly of the embodiment of the present application;

[0035] Figure 10 A perspective view of the snake tube of the embodiment of the present application;

[0036] Figure 11 A perspective view of the arc-shaped hole of the embodiment of the present application;

[0037] Figure 12 A sectional view of the flexible hemostat clip of the embodiment of the present application;

[0038] Figure 13 A perspective view of the clip of the embodiment of the present application;

[0039] Figure 14 A perspective view of the releasing assembly of the embodiment of the present application.

[0040] Wherein, 1, handle; 11a, hand ring; 12a, rotary driving part; 2, outer sheath tube; 21, arc-shaped hole; 211, groove; 3, inner sheath tube; 31, support tube; 311, threading groove; 32, snake tube; 321, threading hole; 33, second clamp; 4, pull rod; 41, connecting frame; 42, inner sleeve; 5, driving assembly; 51, rotating shaft; 511, clamping part; 512, spring; 513, first magnetic attraction part; 52, sprocket; 53, connecting part; 54, rotating sleeve; 55, chain; 6, rotating handle; 7, clamp; 71 clamping arm; 72, sliding groove; 73, sliding shaft; 8, disengaging assembly; 81, first clamping sleeve; 811, first clamp; 82, second clamping sleeve; 821, first clamping part; 822, second clamping part; 9, connecting tube; 91, connecting shaft; 92, connecting port. DETAILED DESCRIPTION

[0041] In order to enable a more clear understanding of the above-mentioned objects, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0042] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other manners different from those described herein; obviously, the embodiments described in the specification are only a part of the embodiments of the present application, and not all the embodiments.

[0043] In view of the technical problem that the front end of the hemostatic clamp on the market is linear and cannot be bent, when the wound position is not good and the two opposite positions of the front end of the endoscope are encountered during endoscopic treatment, it is difficult to close the wound by the hemostatic clamp, it is difficult to rotate and bend the front end of the endoscope to place the hemostatic clamp at an ideal angle, and the clinical use is inconvenient, the embodiments of the present application provide a bendable hemostatic clamp. Figures 1 to 5 The bendable hemostatic clamp of the embodiments of the present application comprises a handle 1, an outer sheath tube 2, an inner sheath tube 3, a pull rod 4 and a driving assembly 5, the handle 1 is provided with a containing cavity, the handle 1 is provided with a hand ring 11a which is slidable along the axial direction thereof, the hand ring 11a is partially arranged in the containing cavity and slides along the axial direction of the handle 1, one end of the pull rod 4 is fixedly connected to the hand ring 11a, so that the pull rod 4 can be stretched and contracted when the hand ring 11a slides along the handle 1, and the stretching and contraction of the pull rod 4 can drive the clamp 7 to open or clamp. The pull rod 4 is sequentially arranged in the containing cavity and the inner sheath tube 3, one end of the pull rod 4 is fixedly connected to the part of the hand ring 11a located in the containing cavity, the other end of the pull rod 4 is connected to the clamp 7 which can be separated, the pull rod 4 can be stretched and contracted relative to the inner sheath tube 3 to open or clamp the clamp 7 under the driving of the hand ring 11a, the other end of the pull rod 4 can bend with the inner sheath tube 3, and the part of the pull rod 4 located in the containing cavity is connected to the rotary driving part 12a and is driven to rotate by the rotary driving part 12a.

[0044] Wherein, the outer sheath 2 is connected to one end of the handle 1, one end of the inner sheath 3 is arranged in the outer sheath 2, the other end extends out of the outer sheath 2, the pull rod 4 is arranged in the handle 1 and the inner sheath 3 in sequence, and the end of the pull rod 4 is installed with the detachable clip 7, the above-mentioned driving assembly 5 is installed on the outer sheath 2 and can drive the inner sheath 3 to rotate and bend, and further drive the end of the pull rod 4 installed with the clip 7 to rotate and bend, so as to realize the multidirectional bending of the clip 7, ensure that the clip 7 can be bent towards each direction, effectively seal the wound, and overcome the effect of affecting the sealing of the wound due to the insufficient bending angle of the front end of the endoscope. In addition, the handle 1 is further provided with the rotary driving member 12a which rotates around the axis thereof, the rotary driving member 12a is rotated to drive the pull rod 4 to rotate, and further drive the clip 7 to rotate around the long axis of the sheath 360°, change the angle of the plane where the two clamping arms 71 of the clip 7 are located, and further change the angle of the clamping arms 71 to clamp the lesion.

[0045] In other embodiments, with reference to Figure 6 、 Figure 7 and Figure 12 , the inner sheath 3 includes the support tube 31 and the snake tube 32 connected to the support tube 31, the support tube 31 can be driven to rotate by the driving assembly 5, the snake tube 32 can be driven to bend by the driving assembly 5, and the other end of the pull rod 4 is arranged in the snake tube 32 and can bend with the snake tube 32.

[0046] The driving assembly 5 comprises a rotating shaft 51, a sprocket 52 and a chain 55. The rotating shaft 51 is radially arranged in the outer sheath 2 and rotatable relative to the outer sheath 2. The sprocket 52 is fixedly arranged on one end of the rotating shaft 51 inside the outer sheath 2. The chain 55 is drivingly connected to the sprocket 52. The sprocket 52 is arranged eccentrically to prevent interference with the pull rod 4 during movement. The outer wall of the support tube 31 is provided with two symmetrical wire passing grooves 311 along the axial direction thereof for the chain 55 to pass through. The part of the chain 55 in contact with the sprocket 52 is in a string bead structure, and the remaining part is in a linear structure with good flexibility. The rotating shaft 51 is rotated around its own axis to rotate the sprocket 52 and drive the chain 55 to rotate around the sprocket 52. Specifically, the one end of the snake tube 32 away from the inner sheath 3 is suspended. Two rows of wire passing holes 321 are oppositely arranged on the outer peripheral wall of the snake tube 32 and connected to the edge of the suspended one end of the snake tube 32. The two free ends of the chain 55 are respectively fixedly connected to the edge of the end of the snake tube 32 by passing through the two rows of wire passing holes 321. The two connection positions are symmetrical to each other. Therefore, when the chain 55 rotates around the sprocket 52, the two free ends of the chain 55 can generate a traction force on the end of the snake tube 32 to bend the snake tube 32. That is, when the handle 6 is rotated clockwise, the sprocket 52 is rotated by the transmission of the rotating shaft 51, so that the snake tube 32 connected to the chain 55 bends in one direction. When the rotating shaft 51 rotates in the counterclockwise direction, the snake tube 32 bends in the opposite direction.

[0047] Meanwhile, the outer sheath 2 is provided with an arc-shaped hole 21 in the circumferential direction. The rotating shaft 51 is arranged in the arc-shaped hole 21 and rotatable along the arc-shaped hole 21. The rotating shaft 51 is fixedly provided with a rotating sleeve 54. The end of the inner sheath 3 is symmetrically provided with two connecting pieces 53 fixedly connected to the rotating sleeve 54. When the rotating shaft 51 rotates along the arc-shaped hole 21, the inner sheath 3 can be driven to rotate by the rotating sleeve 54 and the connecting pieces 53.

[0048] Specifically, the extension direction of the arc-shaped hole 21 is perpendicular to the extension direction of the outer sheath 2. Since the rotating shaft 51 is connected to the inner sheath 3 through the rotating sleeve 54 and the connecting pieces 53, the arc-shaped hole 21 can occupy 1 / 2 of the circumference of the inner sheath 3, corresponding to an angle of 180°. Therefore, when the rotating shaft 51 slides in the arc-shaped hole 21, the inner sheath 3 can be driven to rotate in the circumferential direction. Since the snake tube 32 can bend in two directions, when the snake tube 32 can rotate by 180°, the snake tube 32 can bend in any direction within 360°. Figure 10 Since the snake tube 32 can bend in two directions, when the snake tube 32 can rotate by 180°, the snake tube 32 can bend in any direction within 360°. Thus, the clip 7 can bend in any direction within 360°.

[0049] In other embodiments, the arc-shaped hole 21 can also be more than 1 / 2 of the inner sheath tube 3, but less than the whole of the inner sheath tube 3, and the corresponding angle of the arc-shaped hole 21 is 181° to 330°. When the rotating shaft 51 slides in the arc-shaped hole 21, it can drive the inner sheath tube 3 to rotate in the circumferential direction. Therefore, only bending the snake tube 32 in one direction can realize bending the snake tube 32 in each direction within the range of 0° to 330°.

[0050] The snake tube 32 can be made of insulating non-metallic material or metallic material coated with insulating material, and can be repeatedly bent without breaking or damaging the surrounding tissue. The snake tube 32 is relatively common in the mechanical field, and is a prior art. When it does not rotate in the circumferential direction, one end of the snake tube 32 will bend relative to the other end under the action of the chain, and the bending direction has only two and is opposite, that is, it can bend to the right relative to the left, and if it can bend forward relative to the rear, it can also bend to the rear relative to the front, thereby ensuring the controllability of the bending of the snake tube 32.

[0051] In other embodiments, as shown in Figure 7 The rotating shaft 51 is fixed with a first magnetic attraction member 513, and the inner wall on both sides of the arc-shaped hole 21 where the outer sheath tube 2 is located is provided with a second magnetic attraction member (not marked in the figure). The first magnetic attraction member 513 is configured to be adsorbed to the second magnetic attraction member to fix the position of the rotating shaft 51.

[0052] The rotating shaft 51 can slide in the arc-shaped hole 21. After confirming the position of the inner sheath tube 3 and fixing it, the first magnetic attraction member 513 is adsorbed to the second magnetic attraction member to fix the position of the rotating shaft 51, so as to prevent the use angle of the clip 7 from being changed due to the movement of the rotating shaft 51 during use.

[0053] Of course, in other embodiments, referring to Figure 11 The inner wall on both sides of the arc-shaped hole 21 is provided with a plurality of recesses 211 connected in sequence, and the rotating shaft 51 provided with a mounting groove on both sides in the arc-shaped hole 21 is provided with a spring 512 and a clamping portion 511 connected with one end of the spring 512, and the clamping portion 511 is clamped in any one of the recesses 211.

[0054] Specifically, when the clamping portion 511 slides in the arc-shaped hole 21, since a plurality of recesses 211 connected in sequence are provided on the inner wall on both sides of the arc-shaped hole 21, the clamping portion 511 can be clamped at any position and will not move. At the same time, by using the extensible nature of the spring 512, when the clamping portion 511 slides in the arc-shaped hole 21, the extension and contraction of the spring 512 facilitates the movement of the clamping portion 511 in the plurality of recesses 211.

[0055] In another embodiment, referring to Figure 6 and Figure 7The rotating shaft 51 is fixedly connected with a rotating handle 6 at one end outside the outer sheath 2. The rotating handle 6 can drive the rotating shaft 51 to rotate, which is convenient for personnel operation.

[0056] In other embodiments, as shown in Figure 8 、 Figure 9 and Figure 14 , the other end of the pull rod 4 is provided with a disengaging assembly 8 between the pull rod 4 and the clip 7, and the disengaging assembly 8 is configured to disengage the clip 7 from the pull rod 4. The pull rod 4 is provided with a connecting frame 41 and an inner sleeve 42, the connecting frame 41 is rotatably connected with the clip 7 through a shaft, and the connecting frame 41 is provided with an opening at one end and is fixedly connected with the inner sleeve 42 at the other end; the disengaging assembly 8 includes a first clamping sleeve 81 and a second clamping sleeve 82, the clip 7 is rotatably connected with a connecting pipe 9 sleeved outside the clip 7 through a pin shaft, the connecting pipe 9 is fixedly connected with the first clamping sleeve 81, the first clamping sleeve 81 is sleeved outside the second clamping sleeve 82, and the first clamping sleeve 81 is provided with a first clamping piece 811 at one end, the second clamping sleeve 82 is provided with a first clamping portion 821 and a second clamping portion 822 at both ends, respectively, the first clamping portion 821 is clamped on the first clamping piece 811, the second clamping portion 822 is clamped on the second clamping piece 33 at the end of the inner sheath 3, and the inner sleeve 42 is arranged in the connecting pipe 9 and the second clamping sleeve 82; when the pull rod 4 is pulled, the connecting frame 41 is disengaged from the clip 7 through the opening, and at the same time, the inner sleeve 42 pushes the second clamping sleeve 82 to move away from the clip 7, so that the first clamping portion 821 is disengaged from the first clamping piece 811, the connecting pipe 9 is disengaged from the snake pipe 32, and thus the connecting pipe 9 is fixed at the target position together with the clip 7.

[0057] Specifically, referring to Figure 13 , the clip 7 includes a clamping arm 71, a sliding groove 72 and a sliding shaft 73, when the pull rod 4 is stretched, the sliding shaft 73 can slide in the sliding groove 72, so as to drive the two clamping arms 71 to hold each other; when the pull rod 4 is further pulled, the connecting shaft 91 can be disengaged from the connecting port 92 due to external force, so that the clip 7 remains in a firm clamping state and cannot be opened again.

[0058] Referring to Figure 14The first clamping sleeve 81 is provided with a first clamping piece 811 at one end, the second clamping sleeve 82 is provided with a first clamping part 821 and a second clamping part 822 at two ends respectively, the first clamping part 821 is clamped on the first clamping piece 811, and the second clamping part 822 is clamped on the second clamping piece 33 at the end of the inner sheath 3. Due to the limiting action of the first clamping part 821 and the second clamping part 822, the first clamping piece 811 and the second clamping piece 33 are limited between the first clamping part 821 and the second clamping part 822. When the hand ring 11a is slid in the axial direction, the pull rod 4 moves with the connecting frame 41, so that the clamp 7 is clamped, and further pulling the pull rod 4, the connecting frame 41 is separated from the clamp 7 through the opening, at the same time, the inner sleeve 42 pushes the second clamping sleeve 82 to move away from the clamp 7, the first clamping part 821 and the first clamping piece 811 are extruded and deformed, so that the first clamping part 821 is separated from the first clamping piece 811, so as to realize the tripping. So that the first clamping part 821 is separated from the first clamping piece 811, the connecting pipe 9 is separated from the snake pipe 32, so that the connecting pipe 9 is fixed at the target position together with the clamp 7.

[0059] It is worth noting that when the rotating shaft 51 moves in the arc-shaped hole 21, it can drive the inner sheath 3 and the snake pipe 32 to rotate in the circumferential direction, but it will not make the pull rod 4 and the clamp 7 rotate. It needs to rotate the rotating driving part 12a to drive the pull rod 4 to rotate. Specifically, referring to Figure 14 Because the first clamping sleeve 81 and the inner sheath 3 are rotationally connected, that is, in the process of the rotating shaft 51 moving in the arc-shaped hole 21 and driving the inner sheath 3 to rotate in the circumferential direction, the first clamping sleeve 81 will not rotate with it; in addition, one end of the pull rod 4 is fixedly connected to the hand ring 11a, the other end of the pull rod 4 is connected with the clamp 7 which can be separated, and there is no connection relationship with the rotating shaft 51, so when the rotating shaft 51 drives the snake pipe 32 to rotate in the circumferential direction, the pull rod 4 and the clamp 7 will not rotate with it. The pull rod 4 is driven to rotate by the driving part 12a, and then the clamp 7 is driven to rotate.

[0060] It should be noted that in this document, relational terms such as“first” and“second”, and the like, are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms“comprises”,“comprising”, or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by“comprises... a” does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0061] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications to the description will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other implementations without departing from the spirit or scope of the application. Accordingly, the application is not intended to be limited to the embodiments described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible hemostatic clip, characterized in that, The utility model provides a kind of medical device, including: Handle (1), the handle (1) is provided with accommodating cavity, and the handle (1) is equipped with the ring (11a) slidable along its axial direction, the ring (11a) part is placed in the accommodating cavity, and the handle (1) is further equipped with the rotary drive (12a) rotating around its axis line; Outer sheath (2), connected to one end of the handle (1); Inner sheath (3), one end is provided in the outer sheath (2), the other end extends to the outside of the outer sheath (2), the inner sheath (3) is rotatable relative to the outer sheath (2), and the other end of the inner sheath (3) is bendable; Pull rod (4), sequentially provided in the accommodating cavity and inner sheath (3), one end of the pull rod (4) is fixedly connected to the part of the ring (11a) in the accommodating cavity, the other end of the pull rod (4) is connected with the detachable clip (7), the pull rod (4) can be stretched and contracted relative to the inner sheath (3) to open or clamp the clip (7) under the driving of the ring (11a), the other end of the pull rod (4) can be bent with the inner sheath (3), and the part of the pull rod (4) in the accommodating cavity is connected to the rotary drive (12a) and driven to rotate by the rotary drive (12a); Drive assembly (5), installed on the outer sheath (2), the drive assembly (5) is used to drive the inner sheath (3) to rotate and bend.

2. The bendable hemostatic clip of claim 1, wherein, The inner sheath (3) includes a support tube (31) and a serpentine tube (32) connected to the support tube (31), the support tube (31) can be driven to rotate by the drive assembly (5), the serpentine tube (32) can be driven to bend by the drive assembly (5), and the other end of the pull rod (4) is provided in the serpentine tube (32) and can be bent with the serpentine tube (32).

3. The bendable hemostatic clip of claim 2, wherein, The drive assembly (5) includes a rotating shaft (51), a sprocket (52) and a chain (55), the rotating shaft (51) is provided in the outer sheath (2) along the radial direction and is rotatable relative to the outer sheath (2), the sprocket (52) is fixedly provided on one end of the rotating shaft (51) in the outer sheath (2), and the chain (55) is drivingly connected to the sprocket (52); Two rows of wire holes (321) are provided on the outer peripheral wall of the serpentine tube (32), and the two free ends of the chain (55) are fixedly connected to the end edges of the serpentine tube (32) by corresponding to the two rows of wire holes (321).

4. The bendable hemostatic clip of claim 3, wherein, The outer sheath (2) is provided with an arc-shaped hole (21) in the circumferential direction, the rotating shaft (51) is provided in the arc-shaped hole (21) and can rotate along the arc-shaped hole (21); The rotating shaft (51) is fixedly provided with a rotating sleeve (54), and the end of the inner sheath (3) is symmetrically provided with two connecting pieces (53) fixedly connected to the rotating sleeve (54), and the rotating shaft (51) can drive the inner sheath (3) to rotate by the rotating sleeve (54) and the connecting pieces (53) when rotating along the arc-shaped hole (21).

5. The bendable hemostatic clip of claim 4, wherein, The rotating shaft (51) is fixed with a first magnetic member (513), the inner wall of the outer sheath (2) on both sides of the arc-shaped hole (21) is provided with a second magnetic member, the first magnetic member (513) is configured to be adsorbed to the second magnetic member to fix the position of the rotating shaft (51), and / or, The inner wall of both sides of the arc-shaped hole (21) is provided with a plurality of grooves (211) connected in sequence, and the rotating shaft (51) is provided with a mounting groove on both sides of the arc-shaped hole (21), the mounting groove is provided with a spring (512) and a clamping portion (511) connected with one end of the spring (512), and the clamping portion (511) is clamped in any one of the grooves (211).

6. The bendable hemostatic clip of claim 3, wherein, The outer wall of the support pipe (31) is provided with a threading groove (311) along the axial direction thereof, so that the chain (55) can pass through.

7. The flexible hemostatic clip of any of claims 3-6, wherein the first and second arms are configured to be bent at the first and second arm joints to form the first and second arm portions. The rotating shaft (51) is fixedly connected with a rotating handle (6) at one end outside the outer sheath (2).

8. The flexible hemostatic clip of any one of claims 1-6, wherein, The other end of the pull rod (4) and the clip (7) are provided with a disengagement assembly (8), and the disengagement assembly (8) is configured to make the clip (7) disengage from the pull rod (4).

9. The bendable hemostat of claim 8, wherein, The pull rod (4) is provided with a connecting frame (41) and an inner sleeve (42), the connecting frame (41) is rotatably connected with the clip (7) through a shaft, one end of the connecting frame (41) is provided with an opening, and the other end is fixedly connected with the inner sleeve (42); The disengagement assembly (8) includes a first clamping sleeve (81) and a second clamping sleeve (82), the clip (7) is rotatably connected with a connecting pipe (9) sleeved outside the clip (7) through a pin shaft, the connecting pipe (9) is fixedly connected with the first clamping sleeve (81), the first clamping sleeve (81) is sleeved outside the second clamping sleeve (82), one end of the first clamping sleeve (81) is provided with a first clamping piece (811), both ends of the second clamping sleeve (82) are respectively provided with a first clamping portion (821) and a second clamping portion (822), the first clamping portion (821) is clamped on the first clamping piece (811), the second clamping portion (822) is clamped on a second clamping piece (33) at the end of the inner sheath (3), and the inner sleeve (42) is arranged in the connecting pipe (9) and the second clamping sleeve (82); Pulling the pull rod (4), the connecting frame (41) is disengaged from the clip (7) through the opening, at the same time, the inner sleeve (42) pushes the second clamping sleeve (82) to move away from the clip (7), so that the first clamping portion (821) is disengaged from the first clamping piece (811), and the clip (7) is disengaged from the pull rod (4).

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