Chuck assembly, clamping and releasing mechanism and hemostatic clip

Abstract

The utility model relates to the field of hemostatic clips, in particular to a chuck assembly, a clipping and releasing mechanism and a hemostatic clip. In order to solve the technical problem that an existing hemostatic clip has defects, according to the chuck assembly, the clamping closing and releasing mechanism and the hemostatic clip, the driving mode of the clamping pieces is improved, the clamping pieces are pushed through the push-pull rod and the connecting piece, and therefore the clamping pieces are closed and opened. Compared with a traditional steel wire rope, the combination mode of the push-pull rod and the connecting piece is higher in rigidity, and human tissue can be pushed away as much as possible when the clamping piece is blocked. In addition, when the clamping head assembly is released, foreign matter such as chippings cannot be generated, and extra trouble cannot be caused to medical workers and patients.

Description

Technical Field

[0001] This utility model relates to the field of hemostatic clips, specifically to a clip assembly, a clamping and releasing mechanism, and a hemostatic clip. Background Technology

[0002] With the development of endoscopic technology and other related technologies, endoscopic hemostasis has become the preferred treatment method for gastrointestinal bleeding. Commonly used endoscopic hemostasis methods include laser coagulation, electrocoagulation, local injection of hemostatic agents, drug spraying, and suture clipping. Among these, suture clipping has become the most effective and clinically valuable non-surgical treatment for gastrointestinal bleeding due to its minimal invasiveness, rapid hemostasis, low rebleeding rate, few complications, and definite efficacy.

[0003] Currently, hemostatic clips on the market are mainly divided into two types: sliding type and spring type. Both types of hemostatic clips consist of a clamp tube, a clamp plate, and a stop pin. The opening and closing of the clamp plate is generally achieved directly through the pushing and pulling action of a steel wire rope. However, the steel wire rope has a certain degree of flexibility. If the clamp plate is obstructed by human tissue during the opening process, the deformation of the steel wire rope itself will prevent the clamp plate from opening normally. That is, the pushing force provided by the steel wire rope is insufficient to overcome the obstruction force of the human tissue on the clamp plate, and the pushing force will only be converted into the flexible deformation of the steel wire rope itself. Understandably, the pushing and pulling action of the steel wire rope on the clamp plate is limited by the rigidity of the steel wire rope itself. The structure of the steel wire rope directly connecting the clamp plate has the defect of insufficient strength, which causes the clamp plate to fail to open normally under certain circumstances.

[0004] Furthermore, existing clamping methods require the clamp head to be detached from the rest of the clamp during operation so that the clamp head can remain in the body to maintain the clamping state on the diseased tissue. However, when releasing the clamp head, existing hemostatic clamps inevitably produce debris and other foreign objects. The generation and removal of foreign objects will cause trouble and additional workload for medical staff, while also leaving potential risks for patients. Utility Model Content

[0005] To address the technical problems of existing hemostatic clips, this invention provides a clamp assembly, a clamping and releasing mechanism, and a hemostatic clip. By improving the driving method of the clamp pieces, it utilizes a push-pull rod and a connecting plate to push the clamp pieces, thereby achieving the closing and opening of the clamp pieces. Clearly, the combination of the push-pull rod and connecting plate is more rigid than traditional steel wire ropes, enabling the clamp pieces to push away human tissue as much as possible when obstructed. Furthermore, when the clamp assembly is released, no debris or other foreign objects are generated, causing no additional inconvenience to medical staff and patients.

[0006] The technical solution provided by this utility model is as follows: a clamp assembly, including a connecting seat, a push-pull rod, two connecting pieces, and two clamping pieces; the two clamping pieces intersect and are hinged to the connecting seat, and the two clamping pieces are respectively connected to the push-pull rod through the two connecting pieces; one of the connected clamping pieces and the connecting pieces is provided with a first connecting shaft, and the other is provided with a first connecting hole, the first connecting shaft and the first connecting hole being rotatably engaged; one of the connected connecting pieces and the push-pull rod is provided with a second connecting shaft, and the other is provided with a second connecting hole, the second connecting shaft and the second connecting hole being rotatably engaged; a release groove communicating with the outside is provided on the first connecting hole or the second connecting hole, the through size of the release groove being smaller than the diameter of the corresponding first connecting shaft or the second connecting shaft.

[0007] Optionally, the clamping piece is provided with a snap-fit ​​element, and the connecting seat is provided with a locking part for restricting the movement of the snap-fit ​​element. The two locking parts corresponding to the two clamping pieces are centrally symmetrically arranged on the connecting seat. The locking part includes a guide groove and a locking groove, which are separated by a locking platform. The side of the locking platform facing the guide groove is the release side, and the side of the locking platform facing the locking groove is the locking side. The snap-fit ​​element is used to abut against the release side and the locking side.

[0008] Optionally, the width of the guide groove is not equal to the width of the locking groove.

[0009] Optionally, the latching member is a three-dimensional boss, and the three-dimensional boss is provided with a guide surface, which is used to abut against the release side of the locking platform.

[0010] Optionally, the connecting seat is provided with a guide hole, and the two clamping pieces are respectively connected to the push-pull rod through two connecting pieces passing through the guide hole; the guide hole is tapered, and the tapered guide hole gradually converges from one end near the clamping piece to the other end so that the inner wall of the guide hole forms a guide slope, and the guide slope is used to abut against the connecting piece or the push-pull rod.

[0011] Optionally, the clip includes a clamping arm, wherein the head end of the clamping arm (35) on any one of the clips (3) is inclined toward the side where the clamping arm (35) is located on the other clip (3).

[0012] Optionally, the tilt angle A of the clamping arm is 0° to 30°.

[0013] Optionally, the clip, connector, and connector are made of non-magnetic elastic material or non-magnetic absorbable material.

[0014] A clamping and releasing mechanism includes the aforementioned clamping assembly, and further includes a rotating ring seat, a first rotating ring, a second rotating ring, and a hook. The rotating ring seat is located on one side of the connecting seat, and a limiting platform is fixedly provided on the rotating ring seat. The first rotating ring is located inside the rotating ring seat, and both ends of the first rotating ring abut against the limiting platform. The outer wall of the second rotating ring is fixedly connected to the inner wall of the first rotating ring, and an extension boss is fixedly provided on the second rotating ring. A first release hole is provided on the extension boss, and a second release hole is provided on the connecting seat. A hook is fixedly provided at the end of the hook, and the hook passes through the first release hole and inserts into the second release hole.

[0015] A hemostatic clip includes the aforementioned clamping and releasing mechanism, and further includes a handle, a sliding handle, a rotating wheel, a plastic-coated spring tube, and a mandrel; the end of the handle is provided with a finger ring, and the hook is also provided with a through hole; the plastic-coated spring tube is sleeved on the outside of the mandrel, one end of the plastic-coated spring tube is fixedly connected to the end of the handle, and the other end of the plastic-coated spring tube is fixedly connected to the rotating ring seat; the sliding handle is slidably disposed on the handle; one end of the mandrel is fixedly connected to the sliding handle through a fixing tube, and the other end of the mandrel passes through the through hole and is fixedly connected to the push-pull rod; the rotating wheel is rotatably connected to the handle, and a flat part is provided inside the rotating wheel; the mandrel passes through the flat part and is engaged with the flat part through a conduit.

[0016] Beneficial effects

[0017] Compared with existing technologies, the technical solution provided by this utility model has the following advantages: Addressing the technical problems of defects in existing hemostatic clips, this utility model improves the driving method of the clip by using a push-pull rod and a connecting plate to push the clip, thereby achieving the closing and opening of the clip. Obviously, the combination of the push-pull rod and the connecting plate is more rigid than traditional steel wire ropes, enabling the clip to push away human tissue as much as possible when obstructed. Furthermore, when the clip assembly is released, no debris or other foreign objects are generated, causing no additional inconvenience to medical staff and patients. Attached Figure Description

[0018] Figure 1 This is one of the structural schematic diagrams of the clamp assembly proposed in the embodiment of this utility model.

[0019] Figure 2 This is the second structural schematic diagram of the clamp assembly proposed in this embodiment of the utility model.

[0020] Figure 3 This is the third schematic diagram of the chuck assembly proposed in the embodiment of this utility model.

[0021] Figure 4 for Figure 3Enlarged diagram of point A in the middle.

[0022] Figure 5 This is a schematic diagram of the connecting seat proposed in an embodiment of the present utility model.

[0023] Figure 6 This is a cross-sectional schematic diagram of the connector proposed in an embodiment of the present utility model.

[0024] Figure 7 This is one of the structural schematic diagrams of the clip proposed in the embodiments of this utility model.

[0025] Figure 8 This is the second schematic diagram of the clip structure proposed in the embodiment of this utility model.

[0026] Figure 9 This is the third schematic diagram of the clip structure proposed in the embodiment of this utility model.

[0027] Figure 10 for Figure 9 Enlarged diagram of point B in the middle.

[0028] Figure 11 This is one of the structural schematic diagrams of the connecting piece proposed in the embodiments of this utility model.

[0029] Figure 12 This is the second schematic diagram of the connecting piece proposed in the embodiment of this utility model.

[0030] Figure 13 This is one of the structural schematic diagrams of the push-pull rod proposed in the embodiments of this utility model.

[0031] Figure 14 This is the second schematic diagram of the push-pull rod proposed in the embodiment of this utility model.

[0032] Figure 15 This is a schematic diagram of the structure of the first rotating ring proposed in an embodiment of the present invention.

[0033] Figure 16 This is a schematic diagram of the structure of the second rotating ring proposed in an embodiment of the present invention.

[0034] Figure 17 This is a schematic diagram of the hook structure proposed in an embodiment of the present utility model.

[0035] Figure 18 This is a schematic diagram of the hemostatic clip proposed in an embodiment of the present invention.

[0036] Figure 19 This is one of the working schematic diagrams of the hemostatic clip proposed in the embodiments of this utility model.

[0037] Figure 20This is the second schematic diagram of the working of the hemostatic clip proposed in the embodiment of this utility model. Detailed Implementation

[0038] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0039] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the 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. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections 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. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.

[0040] Example 1

[0041] Combined with appendix Figure 1 To be continued Figure 14 This embodiment proposes a clamp assembly, including a connecting seat 1, a push-pull rod 2, two connecting pieces 9, and two clamping pieces 3. The two clamping pieces 3 intersect and are hinged to the connecting seat 1, and the two clamping pieces 3 are respectively connected to the push-pull rod 2 through the two connecting pieces 9.

[0042] One of the connected clips 3 and connecting pieces 9 is provided with a first connecting shaft 21, and the other is provided with a first connecting hole 31. The first connecting shaft 21 and the first connecting hole 31 are rotatably engaged. One of the connected connecting pieces 9 and push-pull rod 2 is provided with a second connecting shaft 22, and the other is provided with a second connecting hole 32. The second connecting shaft 22 and the second connecting hole 32 are rotatably engaged. The first connecting hole 31 or the second connecting hole 32 is provided with a release groove 30 that communicates with the outside. The through size of the release groove 30 is smaller than the diameter of the corresponding first connecting shaft 21 or second connecting shaft 22.

[0043] The clamp assembly of this embodiment serves as a component of a hemostatic clamp. Its connecting seat 1 and push-pull rod 2 are initially connected to the rest of the hemostatic clamp. When a medical procedure is performed using the hemostatic clamp clamping method, the connecting seat 1 and clamp 3 can detach from the rest of the hemostatic clamp. Hemostatic clamps typically control the clamp assembly through a traction mechanism composed of components such as steel wire ropes. For simplicity, this embodiment does not elaborate on the rest of the hemostatic clamp; it only describes how the push-pull rod 2, controlled by the traction mechanism in the hemostatic clamp, can move linearly along the axial direction of the connecting seat 1.

[0044] The clamp assembly of this embodiment mainly includes two working modes: one working mode is to control the opening and closing of the clamping plate 3 by the axial movement of the push-pull rod 2; the other working mode is to control the push-pull rod 2 to disengage from the clamping plate 3 by the axial movement of the push-pull rod 2.

[0045] The working principle of the opening and closing of the clamp 3 is as follows: When the push-pull rod 2 moves linearly along the axis of the connecting seat 1, the connecting piece 9 will push and pull the tail of the clamp 3. Since the two clamps 3 intersect and are hinged to the connecting seat 1, the clamp 3 will swing during the process of the connecting piece 9 pushing and pulling the clamp 3, thereby realizing the control of the opening and closing of the clamp 3.

[0046] Understandably, since the through size of the release groove 30 is smaller than the diameter of the corresponding first connecting shaft 21 or second connecting shaft 22, the push-pull rod 2, the connecting piece 9 and the clamp 3 can maintain connection during the opening and closing operation of the clamp 3.

[0047] The working principle of disengaging the push-pull rod 2 from the clamping piece 3 needs to be explained in conjunction with the specific structural form. The following is an example of a specific implementation: one of the connected clamping piece 3 and the connecting piece 9 has a first connecting shaft 21, and the other has a first connecting hole 31. It can be understood that the first connecting shaft 21 can be located on the clamping piece 3, and the first connecting hole 31 can be correspondingly located on the connecting piece 9. Similarly, the first connecting shaft 21 can also be located on the connecting piece 9, and the first connecting hole 31 can be correspondingly located on the clamping piece 3. In short, the connected clamping piece 3 and the connecting piece 9 form a movable connection, i.e., a hinge, through the engagement of the shaft and hole.

[0048] Furthermore, one of the connected connecting piece 9 and the push-pull rod 2 is provided with a second connecting shaft 22, and the other is provided with a second connecting hole 32. The second connecting shaft 22 and the second connecting hole 32 are rotatably engaged. Similar to the connection form of the clamping piece 3 and the connecting piece 9, the second connecting shaft 22 and the second connecting hole 32 can be configured to form a hinge. In this embodiment, the arrangement of the second connecting shaft 22 and the second connecting hole 32 is not unique. (Referring to the attached...) Figure 1 Taking the second connecting hole 32 as an example where it is set on the push-pull rod 2, the disengagement groove 30 has only one location. In this embodiment, it is set only on the second connecting hole 32.

[0049] Based on the above-described structure, the working principle for disengaging the push-pull rod 2 from the clamp 3 is as follows: When the push-pull rod 2 moves linearly away from the clamp 3, the clamp 3 will fully close. If the push-pull rod 2 continues its movement, the second connecting hole 32 will move relative to the second connecting shaft 22. The second connecting shaft 22 will apply a force to the second connecting hole 32. Due to the presence of the disengagement groove 30, the second connecting hole 32 will gradually deform until the second connecting shaft 22 and the second connecting hole 32 are fully disengaged. At this point, since the disengagement groove 30 is located on the push-pull rod 2, the push-pull rod 2 can be pulled out of the body along with the rest of the hemostatic clamp, while the connecting seat 1, the two connecting pieces 9, and the two clamps 3 can remain inside the body.

[0050] In addition to the structural forms described above, the release groove 30 can also be provided on the connecting piece 9, that is, the deformation of the second connecting hole 32 on the connecting piece 9 can realize the release of the second connecting shaft 22. Alternatively, in other structural forms, the release groove 30 can also be provided on the first connecting hole 31, and the first connecting hole 31 can be provided on the clamping piece 3 or the connecting piece 9. In this case, the push-pull rod 2 does not separate from the connecting piece 9, but the connecting piece 9 can separate from the clamping piece 3, and the connecting piece 9 and the push-pull rod 2 can leave the human body along with the rest of the hemostatic clamp.

[0051] Based on the structural form and working principle described above, it is clear that, addressing the technical problems of existing hemostatic clips, the clamp assembly of this embodiment improves the driving method of the clamp 3 by using the push-pull rod 2 and the connecting piece 9 to push the clamp 3, thereby realizing the closing and opening of the clamp 3. Obviously, the combination of the push-pull rod 2 and the connecting piece 9 is more rigid than the traditional steel wire rope, enabling the clamp 3 to push away human tissue as much as possible when obstructed. In addition, when the clamp assembly is released, no debris or other foreign objects are generated, and no additional trouble is caused to medical staff and patients.

[0052] Understandably, since the release groove 30 is a key structure for achieving the disengagement of the push-pull rod 2, connecting piece 9, and clamping piece 3, the dimensions of the release groove 30 are also crucial. In a preferred embodiment, the width of the release groove 30 is less than 30% of the diameter of the first connecting shaft 21 or the second connecting shaft 22. This embodiment can ensure the connection strength of the push-pull rod 2, connecting piece 9, and clamping piece 3 during normal connection, and can also smoothly achieve the disengagement of the push-pull rod 2, connecting piece 9, and clamping piece 3.

[0053] Furthermore, since the connecting piece 9, clamping piece 3, and push-pull rod 2 are connected by shaft holes in this technical solution, the positions of the first connecting shaft 21 and the first connecting hole 31 can be flexibly adjusted during actual production. Similarly, the positions of the second connecting shaft 22 and the second connecting hole 32 can also be flexibly adjusted. This allows the structural combination of the connecting piece 9, clamping piece 3, and push-pull rod 2 to have a certain degree of replaceability, providing greater flexibility in the production stage and greater tolerance for the supply chain, thereby improving production efficiency.

[0054] When using hemostatic clips for medical procedures, the clip assembly must ultimately maintain the clamping of the diseased tissue; that is, certain measures need to be taken to keep clip 3 in a clamped state. For example, in some surgical procedures, ligation or elastic band ligation can be used to keep clip 3 in a clamped state.

[0055] However, the above method is complicated to operate and has poor effect. Here, a preferred embodiment is proposed: the clamping piece 3 is provided with a snap-fit ​​member 33, and the connecting seat 1 is provided with a locking part for restricting the movement of the snap-fit ​​member 33. The two locking parts corresponding to the two clamping pieces 3 are centrally symmetrically arranged on the connecting seat 1. The locking part includes a guide groove 14 and a locking groove 13. The guide groove 14 and the locking groove 13 are separated by a locking platform 10. The side of the locking platform 10 facing the guide groove 14 is the release side 101, and the side of the locking platform 10 facing the locking groove 13 is the locking side 102. The snap-fit ​​member 33 is used to abut against the release side 101 and the locking side 102.

[0056] This implementation enables the clip 3 to be locked after closing. Its working principle is as follows: the latching member 33 swings with the clip 3. When the clip 3 has not passed the locking platform 10, its movement is stopped when the latching member 33 abuts against the release side 101 of the locking platform 10. That is, the latching member 33 on the clip 3 can freely slide into or out of the guide groove 14, and at this time, the clip 3 is not locked. When the clip 3 is fully closed, and the push-pull rod 2 is not disengaged from the clip 3, as the push-pull rod 2 continues to move away from the clip 3, the latching member 33 on the clip 3 will pass the locking platform 10 and enter the locking groove 13. At this time, the latching member 33 will be blocked by the locking side 102 on the locking platform 10 and cannot swing in the opposite direction. The inability of the clip 3 to swing in the opposite direction means that the clip 3 cannot reopen and can only remain closed. Thus, the closed state of the clip 3 is locked.

[0057] In optional embodiments, the snap-fit ​​member 33 can be various types of bosses, or spherical or hemispherical protrusions, or it can be a buckle, barb, or other structure that engages with the locking platform 10.

[0058] In a more preferred embodiment, combined with the appendix Figure 9 and attached Figure 10 The latching member 33 is a three-dimensional boss with a guide surface 120 for abutting against the locking platform 10. In this configuration, the guide surface 120 is generally curved or inclined, and it serves as a guide to facilitate the latching member 33's easier passage from the release side 101 over the locking platform 10 into the locking groove 13.

[0059] Generally, the widths of the guide groove 14 and the locking groove 13 can be equal or unequal, and can be adjusted according to the actual production process. Unequal widths of the guide groove 14 and the locking groove 13 mean that the width of the guide groove 14 can be greater than the width of the locking groove 13, or the width of the guide groove 14 can be less than the width of the locking groove 13.

[0060] In one implementation, in conjunction with the appendix Figure 6The width of the guide groove 14 is greater than the width of the locking groove 13. Based on the aforementioned principle, when the clip 3 is closed, the latching member 33 at the tail of the clip 3 moves from the outside of the guide groove 14 towards the release side 101 of the locking platform 10; when the clip 3 is open, it moves from the release side 101 of the locking platform 10 along the guide groove 14 outwards. Therefore, it is necessary to avoid interference between the inner wall of the guide groove 14 and the latching member 33, so the width of the guide groove 14 needs to be relatively wide. The locking groove 13, on the other hand, needs to restrict the movement of the latching member 33. This restriction is achieved by the inner wall of the locking groove 13 and the locking platform 10 abutting against the latching member 33. Therefore, the width of the locking groove 13 is relatively narrow, and the size of the locking groove 13 can be designed so that the latching member 33 slides in precisely without excessive sliding.

[0061] Furthermore, in a further embodiment, in conjunction with the appendix Figure 6 The connecting seat 1 is provided with a guide hole 11. Two clamping pieces 3 are respectively connected to the push-pull rod 2 through two connecting pieces 9 passing through the guide hole 11. The guide hole 11 is conical, and the conical guide hole 11 gradually converges from one end near the clamping piece 3 to the other end so that the inner wall of the guide hole 11 forms a guide slope 110. The guide slope 110 is used to abut against the connecting piece 9 or the push-pull rod 2. In this embodiment, after the connecting piece 9 and the guide rod pass through the guide hole 11 and are connected to the clamping piece 3, during the process of the connecting piece 9 driving the clamping piece 3 to move, the movement of the connecting piece 9 is a composite movement of translation and oscillation, which will inevitably come into contact with the inner wall of the guide hole 11. Therefore, in this embodiment, the guide hole 11 is set to be conical. The guide slope 110 formed by the inner wall of the conical guide hole 11 can follow the movement trend of the connecting piece 9, avoid interference, and thus ensure the opening and closing effect of the clamping piece 3. Furthermore, when the chuck assembly is released, if the connecting piece 9 leaves the chuck assembly together with the push-pull rod 2, the guide slope 110 can also guide the connecting piece 9 as it retracts with the push-pull rod 2, so that the two connecting pieces 9 naturally converge, thus allowing them to pass through the connecting seat 1 more easily and complete the retraction.

[0062] As described above, the chuck assembly needs to be delivered along the endoscope channel to the vicinity of the lesion. Obviously, if the width of the end of the chuck assembly is too large, it will be difficult to insert the chuck assembly into the endoscope channel.

[0063] Therefore, in conjunction with the appendix Figure 7 In a further embodiment, the clamp 3 includes a clamping arm 35, and for any clamp 3, the head end of the clamping arm 35 is tilted toward the side where the clamping arm 35 of the other clamp 3 is located. In this case, when the clamp 3 is in a fully closed state, the width of the end of the clamping assembly is greatly reduced, thereby facilitating insertion of the clamping assembly into the endoscope channel. In a preferred embodiment, the tilt angle A of the clamping arm 35 is 0° to 30°.

[0064] Because current clamping assemblies, such as the clamping plate 3, are mostly made of stainless steel or other metals, the clamping assembly itself may contain magnetism. This could prevent patients who have undergone endoscopic minimally invasive treatment from undergoing MRI examinations for a short period of time, and could also cause them to fail security checks when traveling. Therefore, in a preferred embodiment, the clamping plate 3, connecting seat 1, and connecting plate 9 are preferably made of non-magnetic elastic materials or non-magnetic absorbable materials. Specifically, these include pure titanium, magnesium alloy, zinc alloy, polylactic acid, polyglycolic acid, polyglycolic acid, polyglycolic acid-trimethylene carbonate, polyetheretherketone, polyamide, polyoxymethylene, ultra-high molecular weight polyethylene, and polycarbonate. In a preferred embodiment, pure titanium or polyetheretherketone can be selected as needed. This ensures that the clamping assembly remains in the body and is compatible with MRI examinations, meaning it does not affect the patient's MRI examination or security checks.

[0065] Example 2

[0066] Combined with appendix Figure 15 To be continued Figure 17 and attached Figure 19 and attached Figure 20 This embodiment proposes a clamping and releasing mechanism, including a clamping assembly as proposed in Embodiment 1, and further including a rotating ring seat 4, a first rotating ring 5, a second rotating ring 6, and a hook 7. The rotating ring seat 4 is located on one side of the connecting seat 1, and a limiting platform 40 is fixedly provided on the rotating ring seat 4. The first rotating ring 5 is located inside the rotating ring seat 4, and both ends of the first rotating ring 5 abut against the limiting platform 40. The outer wall of the second rotating ring 6 is fixedly connected to the inner wall of the first rotating ring 5. An extension boss 60 is fixedly provided on the second rotating ring 6, and a first release hole 61 is provided on the extension boss 60. A second release hole 12 is provided on the connecting seat 1. A hanging claw 71 is fixedly provided at the end of the hook 7, and the hanging claw 71 passes through the first release hole 61 and is inserted into the second release hole 12.

[0067] The clamping and releasing mechanism of this embodiment enables the connection and disengagement of the clamp assembly from the rest of the hemostatic clamp in Embodiment 1. Its principle is as follows: the rotating ring seat 4, the first rotating ring 5, the second rotating ring 6, and the hook 7 are all components of the hemostatic clamp. The rotating ring seat 4 assembles the first rotating ring 5 inside it via a limiting platform 40, while still ensuring that the first rotating ring 5 can rotate. The inner wall of the first rotating ring 5 and the outer wall of the second rotating ring 6 are fixedly connected by welding or bonding, or are integrated into one unit. The claw 71 on the hook 7 passes through both the first release hole 61 on the extending boss 60 and the second release hole 12 on the connecting seat 1, thus connecting the second rotating ring 6 to the connecting seat 1. Therefore, the connection between the rest of the hemostatic clamp and the clamping mechanism is achieved.

[0068] The release process of the clamp assembly occurs after the push-pull rod 2 disengages from the clamp piece 3. When the push-pull rod 2 disengages from the connecting piece 9, or when the push-pull rod 2 remains connected to the connecting piece 9 but the connecting piece 9 disengages from the clamp piece 3, the push-pull rod 2, or the push-pull rod 2 together with the connecting piece 9, moves axially along the connecting seat 1 until it abuts against the hook 7, exerting a force on the hook 7. This force causes the claw 71 to disengage from the second release hole 12 on the connecting seat 1. Clearly, since the clamp assembly relies solely on the cooperation of the first release hole 61 and the second release hole 12 with the claw 71 to connect with the rest of the hemostatic clamp, when the claw 71 disengages from the second release hole 12, the clamp assembly, except for the push-pull rod 2 (or except for the push-pull rod 2 and the connecting piece 9), can be released and retained in the body to clamp the lesion. Meanwhile, components such as the rotating seat 4, the first rotating ring 5, the second rotating ring 6, and the hook 7 can leave the body along with the main body of the hemostatic clamp. This allows the remaining parts of the hemostatic clamp to be separated from the clamping mechanism.

[0069] Example 3

[0070] Combined with appendix Figure 18 This embodiment proposes a hemostatic clip, including the clamping and releasing mechanism of Embodiment 2, and further including a handle 80, a sliding handle 81, a rotating wheel 82, a plastic-coated spring tube 88, and a spindle 83; the end of the handle 80 is provided with a finger ring 84, and the hook 7 is also provided with a through hole 72. The plastic-coated spring tube 88 is sleeved on the outside of the spindle 83, one end of the plastic-coated spring tube 88 is fixedly connected to the end of the handle 80, and the other end of the plastic-coated spring tube 88 is fixedly connected to the rotating ring seat 4. The sliding handle 81 is slidably disposed on the handle 80, one end of the spindle 83 is fixedly connected to the sliding handle 81 through a fixing tube 85, and the other end of the spindle 83 passes through the through hole 72 and is fixedly connected to the push-pull rod 2. The rotating wheel 82 is rotatably connected to the handle 80, and a flat part is provided inside the rotating wheel 82. The spindle 83 passes through the flat part and is engaged with the flat part through a conduit 87.

[0071] This embodiment, combined with embodiments 1 and 2, constitutes a complete hemostatic clip. The sliding handle 81 and spindle 83, along with other related structures, form a traction mechanism capable of driving the push-pull rod 2 axially. Specifically, the sliding of the sliding handle 81 relative to the handle 80 drives the push-pull rod 2 axially via the spindle 83, achieving the opening, closing, locking, and release operations of the clamp assembly. The fixed connection between the spindle 83 and the push-pull rod 2 can be achieved through various connection methods, such as interference fit between the shaft and hole, bonding, or welding.

[0072] The rotating wheel 82 can transmit its rotation to the clamp 3 through the cooperation of its internal flat part and the spindle 83, thereby controlling the rotation of the clamp 3. The finger ring 84 at the end of the handle 80 can improve the ease of operation of the hemostatic clip and can accommodate more gripping methods.

[0073] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A collet assembly comprising: It includes a connecting seat (1), a push-pull rod (2), two connecting pieces (9) and two clamping pieces (3); The two clamping pieces (3) intersect and are hinged to the connecting seat (1). The two clamping pieces (3) are respectively connected to the push-pull rod (2) through two connecting pieces (9). One of the connected clips (3) and the connecting piece (9) is provided with a first connecting shaft (21), and the other is provided with a first connecting hole (31). The first connecting shaft (21) and the first connecting hole (31) are rotatably engaged. One of the connected connecting piece (9) and the push-pull rod (2) is provided with a second connecting shaft (22), and the other is provided with a second connecting hole (32). The second connecting shaft (22) and the second connecting hole (32) are rotatably engaged. The first connecting hole (31) or the second connecting hole (32) is provided with a detachment groove (30) that communicates with the outside world. The through size of the detachment groove (30) is smaller than the diameter of the corresponding first connecting shaft (21) or second connecting shaft (22).

2. A collet assembly according to claim 1, wherein The clamp (3) is provided with a snap-fit ​​member (33), and the connecting seat (1) is provided with a locking part for restricting the movement of the snap-fit ​​member (33). The two locking parts corresponding to the two clamps (3) are centrally symmetrically arranged on the connecting seat (1). The locking part includes a guide groove (14) and a locking groove (13), which are separated by a locking platform (10). The side of the locking platform (10) facing the guide groove (14) is the release side (101), and the side of the locking platform (10) facing the locking groove (13) is the locking side (102). The snap-fit ​​member (33) is used to abut against the release side (101) and the locking side (102).

3. A collet assembly according to claim 2, wherein The width of the guide groove (14) is not equal to the width of the locking groove (13).

4. The collet assembly of claim 2, wherein, The snap-fit ​​member (33) is a three-dimensional boss, and a guide surface (120) is provided on the three-dimensional boss. The guide surface (120) is used to abut against the release side (101) of the locking platform (10).

5. A chuck assembly according to claim 1, characterized in that, The connecting seat (1) is provided with a guide hole (11), and the two clamping pieces (3) are respectively connected to the push-pull rod (2) through two connecting pieces (9) passing through the guide hole (11); the guide hole (11) is tapered, and the tapered guide hole (11) gradually converges from one end near the clamping piece (3) to the other end so that the inner wall of the guide hole (11) forms a guide slope (110), and the guide slope (110) is used to abut against the connecting piece (9) or the push-pull rod (2).

6. The collet assembly of claim 1, wherein The clip (3) includes a clip arm (35), and for any clip (3), the head end of the clip arm (35) is inclined toward the side where the clip arm (35) is located on the other clip (3).

7. A collet assembly according to claim 6, wherein The tilt angle A of the clamping arm (35) is 0° to 30°.

8. A collet assembly according to any one of claims 1 to 7 wherein, The clamp (3), connector (1) and connector (9) are made of non-magnetic elastic material or non-magnetic absorbable material.

9. A clamp release mechanism comprising a collet assembly according to any one of claims 1 to 8, wherein, It also includes a swivel base (4), a first swivel (5), a second swivel (6), and a hook (7); The rotating seat (4) is located on one side of the connecting seat (1). A limiting platform (40) is fixedly provided on the rotating seat (4). The first rotating ring (5) is located inside the rotating seat (4), and the two ends of the first rotating ring (5) abut against the limiting platform (40) respectively. The outer wall of the second rotating ring (6) is fixedly connected to the inner wall of the first rotating ring (5). An extension boss (60) is fixedly provided on the second rotating ring (6). A first release hole (61) is provided on the extension boss (60). A second release hole (12) is provided on the connecting seat (1). A hanging claw (71) is fixedly provided at the end of the hook (7). The hanging claw (71) passes through the first release hole (61) and is inserted into the second release hole (12).

10. A haemostatic clip comprising the clip closure release mechanism of claim 9, characterised in that, It also includes a handle (80), a sliding handle (81), a rotating wheel (82), a plastic-coated spring tube (88), and a spindle (83); the end of the handle (80) is provided with a finger ring (84), and the hook (7) is also provided with a through hole (72); The plastic-coated spring tube (88) is sleeved on the outside of the spindle (83). One end of the plastic-coated spring tube (88) is fixedly connected to the end of the handle (80), and the other end of the plastic-coated spring tube (88) is fixedly connected to the rotating seat (4). The sliding handle (81) is slidably disposed on the handle (80). One end of the spindle (83) is fixedly connected to the sliding handle (81) through the fixing tube (85), and the other end of the spindle (83) passes through the through hole (72) and is fixedly connected to the push-pull rod (2). The rotating wheel (82) is rotatably connected to the handle (80). A flat part is provided inside the rotating wheel (82). The spindle (83) passes through the flat part and is engaged with the flat part through a conduit (87).

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