A clamping mechanism and a hemostatic clamp

Abstract

This invention relates to the field of hemostatic clip technology, specifically to a clamping mechanism and a hemostatic clip. Addressing the technical problems of existing hemostatic clips, this invention provides a clamping mechanism and hemostatic clip that, by providing a protrusion at the tail of the clip and a locking platform along the movement path of the protrusion, locks the clip in the closed state through the limiting effect of the locking platform on the protrusion. This method is simple to operate, provides good clamping effect, does not generate additional foreign objects, and does not cause inconvenience to patients and medical staff.

Description

Technical Field

[0001] This invention relates to the field of hemostatic clip technology, specifically to a clip 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, the hemostatic clips available 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. When performing surgical procedures using the clamping method, it is necessary to ensure that the clamp head remains clamped to the diseased tissue. That is, certain measures need to be taken to lock the clamp head to keep it in a clamped state, and then the clamp head is detached from the rest of the parts so that the clamp head can remain in the body to continue to clamp the diseased tissue and achieve hemostasis.

[0004] However, existing hemostatic clips have different locking methods, which may result in defects such as insecure locking or inconvenient locking operation, leading to poor clamping effect or difficulty in locking the clip.

[0005] Furthermore, existing hemostatic clips inevitably produce debris and other foreign objects when releasing the clip. The generation and removal of these foreign objects can cause trouble and additional workload for medical staff, while also posing potential risks to patients. Summary of the Invention

[0006] To address the technical problems of existing hemostatic clips, this invention provides a clamping mechanism and a hemostatic clip. It features a protrusion at the tail of the clip and a locking platform along the protrusion's movement path. The locking platform limits the protrusion's position, thus locking the clip in the closed state. This method is simple to operate, provides excellent clamping effect, does not generate foreign objects, and does not cause inconvenience to patients or medical staff.

[0007] The technical solution provided by this invention is as follows: a clamping mechanism, 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 at the intersection; the push-pull rod is detachably connected to the two clamping pieces respectively through the two connecting pieces; each clamping piece includes a clamping arm, a clamping tooth is fixedly provided on the clamping arm, a clamping boss is fixedly provided at the end of the clamping arm, and the clamping arm is inclined towards the side where the clamping tooth is located; a snap-fit ​​element is provided on the clamping piece, and a locking part for restricting the movement of the snap-fit ​​element is provided on the connecting seat; 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 snap-fit ​​component is a three-dimensional boss, and the three-dimensional boss is provided with a guide surface, which is used to abut against the locking platform.

[0009] Optionally, the width of the guide groove is not equal to the width of the locking groove.

[0010] Optionally, one of the connected clips and the connecting piece is provided with a first connecting shaft, and the other is provided with a first connecting hole, the first connecting shaft being rotatably engaged with the first connecting hole; one of the connected connecting piece 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 being rotatably engaged with the second connecting hole; a disengagement groove communicating with the outside is provided on the first connecting hole or the second connecting hole, the through size of the disengagement groove being smaller than the diameter of the corresponding first connecting shaft or the second connecting shaft.

[0011] 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 the side near the clamping piece to the other side to form a guide slope, and the guide slope is used to abut against the connecting piece or the push-pull rod.

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

[0013] Optionally, the clamping bosses located on the two clamping arms are staggered.

[0014] Optionally, the clip, connector, and connector are made of non-magnetic elastic material or non-magnetic absorbable material.

[0015] A hemostatic clip includes the aforementioned clamping mechanism, and further includes a rotating base, a first rotating ring, a second rotating ring, and a hook. The rotating base is located on one side of the connecting base, and a limiting platform is fixedly provided on the rotating base. The first rotating ring is located inside the rotating base, 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 base. 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.

[0016] Optionally, it also includes a handle, a sliding handle, a rotating wheel, a plastic-coated spring tube, and a spindle; 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 spindle, 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 spindle is fixedly connected to the sliding handle through a fixing tube, and the other end of the spindle 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 spindle passes through the flat part and is engaged with the flat part through a guide tube.

[0017] Beneficial effects

[0018] Compared with existing technologies, the technical solution provided by this invention has the following advantages: Addressing the technical problems of defects in existing hemostatic clips, this invention provides a protrusion at the tail of the clip and a locking platform along the movement path of the protrusion. The locking platform's limiting effect on the protrusion locks the clip in the closed state. This method is simple to operate, provides good clamping effect, does not generate additional foreign objects, and does not cause inconvenience to patients and medical staff. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of the clamping mechanism proposed in the embodiments of the present invention.

[0020] Figure 2 This is the second schematic diagram of the chuck mechanism proposed in the embodiment of the present invention.

[0021] Figure 3 This is the third schematic diagram of the chuck mechanism proposed in the embodiment of the present invention.

[0022] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.

[0023] Figure 5 This is a schematic diagram of the connector structure proposed in an embodiment of the present invention.

[0024] Figure 6 This is a cross-sectional schematic diagram of the connector proposed in an embodiment of the present invention.

[0025] Figure 7 This is one of the structural schematic diagrams of the clip proposed in an embodiment of the present invention.

[0026] Figure 8 This is the second schematic diagram of the clip structure proposed in the embodiment of the present invention.

[0027] Figure 9 This is the third schematic diagram of the clip structure proposed in the embodiment of the present invention.

[0028] Figure 10 for Figure 9 Enlarged diagram of point B in the middle.

[0029] Figure 11 This is one of the structural schematic diagrams of the connecting piece proposed in the embodiments of the present invention.

[0030] Figure 12 This is the second schematic diagram of the connecting piece proposed in the embodiment of the present invention.

[0031] Figure 13 This is one of the structural schematic diagrams of the push-pull rod proposed in the embodiments of the present invention.

[0032] Figure 14 This is the second schematic diagram of the push-pull rod proposed in the embodiment of the present invention.

[0033] Figure 15 This is one of the schematic diagrams of clip engagement proposed in the embodiments of the present invention.

[0034] Figure 16 This is the second schematic diagram of the clamp engagement proposed in the embodiment of the present invention.

[0035] Figure 17 This is a schematic diagram of the structure of the first rotating ring proposed in an embodiment of the present invention.

[0036] Figure 18 This is a schematic diagram of the structure of the second rotating ring proposed in an embodiment of the present invention.

[0037] Figure 19 This is a schematic diagram of the hook structure proposed in an embodiment of the present invention.

[0038] Figure 20 This is a schematic diagram of the hemostatic clip proposed in an embodiment of the present invention.

[0039] Figure 21 This is one of the schematic diagrams illustrating the operation of the hemostatic clip proposed in the embodiments of the present invention.

[0040] Figure 22This is the second schematic diagram of the hemostatic clip proposed in the embodiment of the present invention. Detailed Implementation

[0041] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0042] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. The terms "first," "second," etc., used in this invention are for the convenience of describing the technical solutions of the invention and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solutions of the invention. 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 invention, 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 invention and simplifying the description, not to 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 of the invention. 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention 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 invention.

[0043] Example 1

[0044] Combined with appendix Figure 1 To be continued Figure 14 This embodiment proposes a clamping mechanism, 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 at the intersection. The push-pull rod 2 is detachably connected to the two clamping pieces 3 through the two connecting pieces 9 respectively. The clamping piece 3 includes a clamping arm 35, on which a clamping tooth 36 is fixedly provided. A clamping boss 37 is fixedly provided at the end of the clamping arm 35, and the clamping arm 35 is inclined towards the side where the clamping tooth 36 is located.

[0045] The clamping piece 3 is provided with a snap-fit ​​element 33, and the connecting seat 1 is provided with a locking part for restricting the movement of the snap-fit ​​element 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, 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 ​​element 33 is used to abut against the release side 101 and the locking side 102.

[0046] The clamping mechanism in this embodiment is part of the hemostatic clamp assembly. It is connected to the push-pull rod 2 by a traction mechanism composed of components such as steel wire rope in the hemostatic clamp. The push-pull rod 2 is detachably connected to the clamping plate 3 through two connecting pieces 9. When the push-pull rod 2 is pushed or pulled, it can drive the clamping plate 3 to swing, thereby realizing the clamping and opening of the clamping plate 3.

[0047] After the clamping mechanism completes the clamping of the lesion, it needs to maintain the clamped state, that is, it needs to lock the clamping mechanism in the clamped state. The specific working principle is as follows: the locking member 33 swings with the swing of the clamping piece 3. When the clamping piece 3 has not passed the locking platform 10, its movement stroke ends when the locking member 33 abuts against the release side 101 of the locking platform 10. That is, the locking member 33 on the clamping piece 3 can freely slide into the guide groove 14 or freely slide out of the guide groove 14. At this time, the clamping piece 3 is not locked.

[0048] When clip 3 is fully closed and needs to be locked, as push-pull rod 2 continues to move away from clip 3, the latching member 33 on clip 3 will pass over locking platform 10 and enter locking groove 13. At this time, the latching member 33 will be blocked by locking side 102 on locking platform 10 and cannot swing back. The inability of clip 3 to swing back means that clip 3 cannot be reopened and can only remain closed, thus achieving the locking of clip 3 in the closed state.

[0049] In optional embodiments, the snap-fit ​​member 33 can be various types of boss structures, or spherical or hemispherical protrusions, or it can be a snap-fit, barb, or other structure that engages with the locking platform 10.

[0050] To address the shortcomings of existing hemostatic clips, the clamping mechanism proposed in this embodiment features a protrusion at the tail of the clamping piece 3, with a locking platform 10 positioned along the movement path of the protrusion. The locking platform 10 limits the protrusion's position, thus locking the clamping piece 3 in the clamped state. This method is simple to operate, provides excellent clamping effect, and avoids the generation of foreign objects, thus minimizing inconvenience to patients and medical staff.

[0051] Combined with appendix Figure 9 and attached Figure 10In a preferred embodiment, 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 inclined or curved, 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.

[0052] Generally speaking, the widths of the guide groove 14 and the locking groove 13 can be equal or unequal. When the widths of the guide groove 14 and the locking groove 13 are unequal, it means that the guide groove 14 is larger than the locking groove 13 or smaller than the locking groove 13. The widths of the guide groove 14 and the locking groove 13 will affect the length of the locking platform 10, and thus affect the fit between the locking platform 10 and the snap-fit ​​part 33. The widths of the guide groove 14 and the locking groove 13 should be designed according to actual needs.

[0053] Combined with appendix Figure 6 In one embodiment, the 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.

[0054] In this embodiment, the clamping teeth 36 and clamping protrusions 37 on the clamping arm 35 can further improve the clamping effect of the clamping mechanism on the lesion, that is, the occlusion effect on the wound is better. At the same time, this design can also make the clamping mechanism have a better gripping effect.

[0055] Furthermore, during the hemostatic clip closure procedure, the clip mechanism needs to be advanced along the endoscopic forceps channel to the vicinity of the lesion, combined with the attached... Figure 15 If the clamping teeth 36 and clamping boss 37 are present, the width of the end of the clamping mechanism may still be too large even when the clamping piece 3 is fully closed, making it inconvenient to insert into the endoscope channel. Therefore, in conjunction with the attached... Figure 7 and attached Figure 16In this embodiment, the clamping arm 35 is tilted towards the side where the clamping teeth 36 are located. At this time, when the clamping plate 3 is in a fully closed state, the width of the end of the clamping mechanism is greatly reduced, thus facilitating insertion of the clamping mechanism into the endoscope channel. In a preferred embodiment, the tilt angle A of the clamping arm 35 is 0° to 30°.

[0056] In addition, combined with the appendix Figure 8 Appendix Figure 9 and attached Figure 16 In another improved embodiment, the clamping bosses 37 on the two clamping plates 3 are staggered. Compared to the situation where the clamping bosses 37 on the two clamping plates 3 directly abut each other, which would hinder closure, in this embodiment, when the clamping plates 3 are closed, the width dimension of the end of the clamping mechanism does not increase much because the clamping bosses 37 are staggered, thus making it easier for the clamping mechanism to be inserted into the endoscope channel.

[0057] According to the operation procedure of the clamping method, after the hemostatic clamp has clamped the lesion, only the clamp head should be retained, that is, the clamp head mechanism needs to be detached from the rest of the hemostatic clamp. In this embodiment, the push-pull rod 2 and the clamping piece 3 must first be detached. That is, the push-pull rod 2 is detachably connected to the two clamping pieces 3 through two connecting pieces 9 respectively.

[0058] Therefore, combined with the appendix Figure 2 and appendix Figure 11 To be continued Figure 14 In a preferred embodiment, 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, with the first connecting shaft 21 rotatably engaged with the first connecting hole 31; 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, with the second connecting shaft 22 rotatably engaged with the second connecting hole 32; a disengagement groove 30 communicating with the outside is provided on the first connecting hole 31 or the second connecting hole 32, and the through size of the disengagement groove 30 is smaller than the diameter of the corresponding first connecting shaft 21 or second connecting shaft 22.

[0059] This implementation method can combine the linear motion of the push-pull rod 2 to disengage the push-pull rod 2 from the clamping plate 3 after the clamping mechanism completes the clamping and locking. The working principle of this disengagement mechanism needs to be explained in conjunction with the specific structural form.

[0060] The following is a specific embodiment: one of the connected clamping piece 3 and connecting piece 9 is provided with a first connecting shaft 21, and the other is provided with a first connecting hole 31. It can be understood that the first connecting shaft 21 can be disposed on the clamping piece 3, and the first connecting hole 31 can be correspondingly disposed on the connecting piece 9. Similarly, the first connecting shaft 21 can also be disposed on the connecting piece 9, and the first connecting hole 31 can be correspondingly disposed on the clamping piece 3. In short, the connected clamping piece 3 and connecting piece 9 form a movable connection, i.e., a hinge, through the engagement of the shaft and hole.

[0061] 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; taking the second connecting hole 32 being provided on the push-pull rod 2 as an example, there is only one disengagement slot 30. In this embodiment, it is taken as being provided only on the second connecting hole 32.

[0062] Understandably, in this structural form, when the release groove 30 is not deformed under force, since the through size of the release groove 30 is smaller than the diameter of the second connecting shaft 22, the connecting piece 9 and the push-pull rod 2 can be connected to each other in a hinged manner.

[0063] Furthermore, based on the structural form described above, 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 and lock. The locking process is described above. After locking, the clamp 3 continues to maintain the movement trend of the push-pull rod 2. The second connecting hole 32 will move relative to the second connecting shaft 22, and 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.

[0064] 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.

[0065] Based on the structural form and working principle described above, it can be seen that the clamping mechanism of this embodiment improves the driving method of the clamping plate 3 by using the push-pull rod 2 and the connecting plate 9 to push the clamping plate 3, thereby realizing the closing and opening of the clamping plate 3. Obviously, the combination of the push-pull rod 2 and the connecting plate 9 is more rigid than the traditional steel wire rope, enabling the clamping plate 3 to push away human tissue as much as possible when obstructed. In addition, when the clamping mechanism is released, no debris or other foreign objects are generated, and no additional trouble is caused to medical staff and patients.

[0066] 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.

[0067] 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.

[0068] In addition, combined with the appendix Figure 6In a further embodiment, the connecting seat 1 is provided with a guide hole 11. 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 conical, and the conical guide hole 11 gradually converges from the side near the clamping piece 3 to the other side to form 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 mechanism is released, if the connecting piece 9 leaves the chuck mechanism 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.

[0069] Because current clamping mechanisms, such as the clamping plate 3, are mostly made of stainless steel or other metals, the clamping mechanism itself may contain magnetism. This could prevent patients who have undergone endoscopic minimally invasive treatment from undergoing MRI scans 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 mechanism remains in the body and is compatible with MRI scans, meaning it does not affect the patient's MRI examination or security checks.

[0070] Example 2

[0071] Combined with appendix Figure 17 To be continued Figure 20This embodiment proposes a hemostatic clip, including a clamping mechanism as described in Embodiment 1, and further including a rotating base 4, a first rotating ring 5, a second rotating ring 6, and a hook 7. The rotating base 4 is located on one side of the connecting base 1, and a limiting platform 40 is fixedly provided on the rotating base 4. The first rotating ring 5 is located inside the rotating base 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, and 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, and a second release hole 12 is provided on the connecting base 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 inserts into the second release hole 12.

[0072] The clamping mechanism proposed in Example 1 enables the connection and disengagement between the clamping plate 3 and the push-pull rod 2. However, to disengage the clamping mechanism from the rest of the hemostatic clamp, it is also necessary to disengage the connecting seat 1 from the rest of the hemostatic clamp. This embodiment enables the connection and release of the clamping mechanism from the rest of the hemostatic clamp.

[0073] The working principle of this embodiment for connecting and releasing the clamping mechanism with the rest of the hemostatic clamp 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 through the limiting platform 40, but still ensures 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 integrally formed. The claw 71 on the hook 7 passes through the first release hole 61 on the extension boss 60 and the second release hole 12 on the connecting seat 1, realizing the connection between the second rotating ring 6 and the connecting seat 1. Thus, the connection between the rest of the hemostatic clamp and the clamping mechanism is realized.

[0074] The release process of the clamp mechanism occurs after the push-pull rod 2 disengages from the clamping 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 clamping 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 mechanism 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 mechanism, 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.

[0075] In a further embodiment, the hemostatic clip 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 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. A flat section is provided inside the rotating wheel 82, and the spindle 83 passes through the flat section and is engaged with the flat section through a conduit 87.

[0076] In this embodiment, the sliding handle 81 and the spindle 83, along with other related structures, constitute a pulling mechanism capable of driving the push-pull rod 2 to move axially. Specifically, the sliding of the sliding handle 81 relative to the handle 80 drives the push-pull rod 2 to move axially via the spindle 83, thus realizing the opening, closing, locking, and releasing operations of the clamp mechanism. 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.

[0077] 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.

[0078] 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 spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A chuck mechanism, characterized in that, 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 the intersection is hinged to the connecting seat (1). The push-pull rod (2) is detachably connected to the two clamping pieces (3) respectively through the two connecting pieces (9). The clamp (3) includes a clamp arm (35), a clamping tooth (36) is fixedly provided on the clamp arm (35), a clamping boss (37) is fixedly provided at the end of the clamp arm (35), and the clamp arm (35) is inclined to the side where the clamping tooth (36) is located. 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).

2. The chuck mechanism according to claim 1, characterized in that, 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 locking platform (10).

3. The chuck mechanism according to claim 1, characterized in that, The width of the guide groove (14) is not equal to the width of the locking groove (13).

4. A chuck mechanism according to claim 1, characterized in that, 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) is rotatably engaged with the first connecting hole (31). 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) is rotatably engaged with the second connecting hole (32). The first connecting hole (31) or the second connecting hole (32) is provided with a disengagement groove (30) communicating with the outside. The through size of the disengagement groove (30) is smaller than the diameter of the corresponding first connecting shaft (21) or second connecting shaft (22).

5. A chuck mechanism according to claim 4, 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 the side near the clamping piece (3) to the other side to form 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. A chuck mechanism according to claim 1, characterized in that, The tilt angle A of the clamping arm (35) is 0° to 30°.

7. A chuck mechanism according to claim 1, characterized in that, The clamping bosses (37) located on the two clamping arms (35) are staggered.

8. A chuck mechanism according to any one of claims 1-7, characterized in that, The clamp (3), connector (1) and connector (9) are made of non-magnetic elastic material or non-magnetic absorbable material.

9. A hemostatic clip, comprising a clamping mechanism as described in any one of claims 1-8, characterized in that, It also includes a swivel seat (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 hemostatic clip according to claim 9, characterized 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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