A reloadable connection mechanism, chuck, and clamping device

Abstract

This utility model relates to the field of medical device technology, specifically to a reloadable connecting mechanism, a clamp, and a clamping device, including a clamp tube, a fixed seat, a rotating ring seat, an embedded rotating ring, and a connecting shaft. The clamp tube is located on one side of the rotating ring seat, and the fixed seat is slidably disposed inside the clamp tube. A padlock step is provided inside the clamp tube near the rotating ring seat. The rotating ring seat is sleeved on the outside of the embedded rotating ring, and an elastic piece is provided circumferentially on the embedded rotating ring. The elastic piece is recessed into the interior of the embedded rotating ring, and a hook is provided at the end of the elastic piece. The connecting shaft passes through the embedded rotating ring and is detachably connected to the fixed seat. The connecting shaft abuts tightly against the elastic piece to allow the elastic piece to expand outward, and the padlock step is used to engage with the hook. This utility model achieves effective transmission of axial movement and circumferential rotation between the operating mechanism and the clamp on the clamping device. Moreover, this connecting mechanism enables rapid and efficient reloading, reduces the probability of assembly failure, and effectively ensures the stability of the clamp after reloading.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a reloadable connection mechanism, clamp, and clamping device. Background Technology

[0002] With the development of endoscopic technology and other related technologies, gastrointestinal bleeding is often treated using hemostatic clips. In practice, the hemostatic clip method involves inserting the clip's application mechanism into the patient's digestive tract through the endoscope's working channel. Once the clip reaches the pre-operative position within the patient's body, the handle is operated to generate clamping force, thereby stopping bleeding or closing the surgical wound.

[0003] Existing clamping mechanisms are generally connected to the handle operating unit via a conveying mechanism consisting of tubing and wire. Based on the different connection methods between the clamping mechanism and the conveying mechanism, they can be divided into two categories: integrated clamping devices and separate clamping devices. In integrated devices, both the clamping unit and the conveying mechanism are designed for single use, while in separate devices, only the clamping mechanism is a non-reusable component; its conveying mechanism can be reused repeatedly. Therefore, the clamping mechanism can be replaced, i.e., a new clamping mechanism can be loaded after the previous one is released.

[0004] For existing integrated instruments, the clamping mechanism cannot be repeatedly loaded, and the replacement of the clamping mechanism during surgery requires the entire integrated instrument to be replaced.

[0005] Existing detachable instruments suffer from drawbacks such as time-consuming and inefficient reloading of the clamping mechanism, as well as poor assembly stability. Investigations have shown that the complex interface between the existing clamping and delivery mechanisms significantly increases assembly time. Furthermore, the reloading process for the clamping mechanism of detachable instruments must be completed in real-time during surgery, and this time cost directly impacts surgical efficiency (prolonging surgical time) and may even increase the risk of tissue exposure due to operational delays.

[0006] Furthermore, due to the complexity and precision of the parts and their small size, as well as the cumbersome and complicated interface between the parts, assembly failure is likely to occur, which may lead to functional abnormalities of the device after assembly. Utility Model Content

[0007] To address the technical problems of existing hemostatic clip devices, this utility model provides a reloadable connecting mechanism, a clamp, and a clamping device. It achieves effective transmission of axial movement and circumferential rotation between the operating mechanism and the clamp on the clamping device through a combination of an embedded rotating ring, a fixed seat, a clamp tube, a rotating ring seat, and an embedded rotating ring. The connecting mechanism enables rapid and efficient reloading, reduces the probability of assembly failure, and effectively ensures the stability of the clamp after reloading.

[0008] The technical solution provided by this utility model is as follows: a reloadable connection mechanism, including a clamp tube, a fixed seat, a rotating ring seat, an embedded rotating ring, and a connecting shaft; the clamp tube is located on one side of the rotating ring seat, the fixed seat is slidably disposed inside the clamp tube, and a padlock step is provided inside the clamp tube near the rotating ring seat; the rotating ring seat is sleeved on the outside of the embedded rotating ring, and a plurality of elastic pieces are provided on the circumferentially arranged on the embedded rotating ring, the elastic pieces are recessed into the interior of the embedded rotating ring, and the ends of the elastic pieces are provided with hooks; the connecting shaft passes through the embedded rotating ring and is detachably connected to the fixed seat, the connecting shaft abuts tightly against the elastic pieces to make the elastic pieces expand outward, and the padlock step is used to engage with the hooks.

[0009] Optionally, a flexible pad is provided inside the clamp tube near the padlock step. When the elastic sheet expands outward, the claw is embedded in the flexible pad, or the claw is embedded between the flexible pad and the padlock step.

[0010] Optionally, a limiting platform is provided on one side of the padlock step inside the clamp tube, and there is a locking gap between the limiting platform and the padlock step, which is used to engage with the hook claw.

[0011] Optionally, at least two inwardly protruding limiting portions are evenly provided on the clamp tube along the circumference, and the limiting portions abut against the outer wall of the fixing seat.

[0012] Optionally, the fixing seat is provided with a through groove on the side near the embedded rotating ring, and the through groove extends away from the side of the embedded rotating ring, so that part of the fixing seat is divided into a first elastic segment and a second elastic segment; a first type groove is provided on the first elastic segment, and a second type groove is provided on the second elastic segment, and the first type groove and the second type groove are correspondingly spliced ​​to form a backstop groove; a backstop boss is provided at the end of the connecting shaft, and the backstop groove and the backstop boss form a backstop connection.

[0013] Optionally, the radial dimension of the fixing seat gradually converges from one end away from the connecting shaft to the other end.

[0014] Optionally, a rotating connecting section is provided on the connecting shaft near the anti-reverse boss;

[0015] The first elastic segment is provided with a first mating groove, and the second elastic segment is provided with a second mating groove. The first mating groove and the second mating groove are combined to form a rotating connection groove, and the rotating connection groove is coupled with the rotating connection segment.

[0016] A chuck includes the aforementioned reloadable connection mechanism, and further includes a clamping plate and a pin. The fixing base is provided with a hook, and the pin passes through a through hole in the clamping plate and is hooked onto the hook.

[0017] Optionally, the tail of the clamp is provided with a hanging platform, and the inner wall of the clamp tube is provided with a positioning part. When the positioning part is engaged with the hanging platform, the positioning part is used to restrict the clamp from moving towards its head end.

[0018] A clamping device includes a clamp as described above, and further includes an operating component and a connecting component; the operating component includes a handle body, a push-pull block slidably disposed on the handle body, and a roller rotatably disposed on the handle body; the connecting component includes a flexible tube and a mandrel, the flexible tube is sleeved on the outside of the mandrel, both ends of the flexible tube are fixedly connected to the handle body and a rotating ring seat respectively, one end of the mandrel is fixedly connected to the connecting shaft, the mandrel passes through the roller and is fixedly connected to the roller, and the other end of the mandrel is fixedly connected to the push-pull block.

[0019] Beneficial effects

[0020] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: In view of the technical problems of defects in existing hemostatic clamp instruments, the reloadable connection mechanism proposed by this utility model realizes the effective transmission of axial movement and circumferential rotation between the operating mechanism and the clamp on the clamping instrument through the combination connection of the embedded rotating ring, the fixed seat, the clamp tube, the rotating ring seat and the embedded rotating ring. Moreover, this connection mechanism can realize rapid and efficient reloading, reduce the probability of assembly failure, and effectively ensure the stability of the clamp after reloading. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the reloadable connection mechanism proposed in an embodiment of the present invention.

[0022] Figure 2 This is one of the structural schematic diagrams of the embedded rotating ring proposed in the embodiments of this utility model.

[0023] Figure 3 This is the second schematic diagram of the embedded rotating ring structure proposed in this embodiment of the utility model.

[0024] Figure 4 This is a partial schematic diagram of the reloadable connection mechanism proposed in an embodiment of the present invention.

[0025] Figure 5 This is a partial cross-sectional schematic diagram of the reloadable connection mechanism proposed in an embodiment of the present invention.

[0026] Figure 6 This is one of the structural schematic diagrams of the connecting shaft proposed in the embodiment of this utility model.

[0027] Figure 7 This is a partial perspective view of the reloadable connection mechanism proposed in an embodiment of the present invention.

[0028] Figure 8 This is one of the structural schematic diagrams of the fixing base proposed in the embodiment of this utility model.

[0029] Figure 9 This is the second structural schematic diagram of the fixing base proposed in the embodiment of this utility model.

[0030] Figure 10 This is one of the structural schematic diagrams of the clamp tube proposed in the embodiment of this utility model.

[0031] Figure 11 This is the second schematic diagram of the clamp tube proposed in the embodiment of this utility model.

[0032] Figure 12 This is the second structural schematic diagram of the connecting shaft proposed in the embodiment of this utility model.

[0033] Figure 13 This is the third structural schematic diagram of the fixing base proposed in the embodiment of this utility model.

[0034] Figure 14 This is one of the schematic diagrams of the release process proposed in the embodiments of this utility model.

[0035] Figure 15 This is the second schematic diagram of the release process proposed in this embodiment of the utility model.

[0036] Figure 16 This is a schematic diagram of the clamping device proposed in an embodiment of the present invention. Detailed Implementation

[0037] 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.

[0038] 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.

[0039] Example 1

[0040] Combined with appendix Figure 1 To be continued Figure 13 This embodiment proposes a reloadable connection mechanism, including a clamp tube 1, a fixed base 3, a swivel base 82, an embedded swivel 83, and a connecting shaft 4.

[0041] The clamp tube 1 is located on one side of the swivel seat 82. The clamp tube 1 can be made of metal, such as stainless steel. The fixing seat 3 is slidably disposed inside the clamp tube 1. The fixing seat 3 is used to assemble the clamping piece 2. The fixing seat 3 is generally made of engineering plastic with a certain elastic strength, such as PC. When the fixing seat 3 moves axially along the inside of the clamp tube 1, the clamping piece 2 will be retracted into the clamp tube 1 or pushed out of the clamp tube 1. When the clamping piece 2 is partially or completely retracted into the clamp tube 1, the clamping piece 2 will be constricted by the constraint of the clamp tube 1; when the clamping piece 2 is pushed out of the clamp tube 1, the clamping piece 2 will naturally open.

[0042] Furthermore, in this embodiment, the rotating ring seat 82 is sleeved on the outside of the embedded rotating ring 83, in conjunction with the attached... Figure 2 and attached Figure 3 The inner rotating ring 83 is provided with a number of elastic pieces 830 along its circumferential direction. The elastic pieces 830 are recessed into the inner rotating ring 83, and the ends of the elastic pieces 830 are provided with hooks 831.

[0043] In this embodiment, the rotating seat 82 serves both as a structure for housing the embedded rotating ring 83 and as a structure for connecting to the clamping device. Generally, the operating components of the clamping device, such as the handle, are connected to the connection mechanism of this embodiment via a flexible tube (such as a sheath). One specific connection method is that the rotating seat 82 is fixedly connected to the flexible tube.

[0044] In this example, the connecting shaft 4 is generally connected to the conveying mechanism of the clamping device to directly transmit the operating action of the handle. In one specific way, the handle can manipulate the movement of the metal wire, rotate the metal wire or push and pull the metal wire. The connecting shaft 4 is connected to the metal wire. The operation of the handle on the metal wire can be transmitted to the connecting shaft 4 to realize its axial movement and rotation.

[0045] In actual use, the reloadable connecting mechanism of this embodiment requires the connecting shaft 4 to pass through the inner rotating ring 83 and be detachably connected to the fixing seat 3 located inside the clamp tube 1. When the connecting shaft 4 passes through the inner rotating ring 83, the elastic sheet 830 is recessed into the inner rotating ring 83, so the connecting shaft 4 abuts against the elastic sheet 830 and applies a radial force to the elastic sheet 830, causing the circumferentially evenly distributed elastic sheet 830 to expand outward. The outwardly expanding elastic sheet 830 will drive the hook 831 at its end to move towards the inner wall of the clamp tube 1 until it abuts against the inner wall of the clamp tube 1.

[0046] Understandably, when the elastic plate 830 expands outward sufficiently, the friction generated by the contact between the claw 831 and the inner wall of the clamp tube 1 is sufficient to ensure the connection between the embedded rotating ring 83 and the clamp tube 1. When this connection is achieved, the circumferential rotation of the connecting shaft 4 can also be transmitted to the embedded rotating ring 83, and then from the embedded rotating ring 83 to the clamp tube 1, thereby driving the rotational movement of the clamping plate 2.

[0047] In this embodiment, a padlock step 103 is further provided inside the clamp tube 1 near the swivel seat 82. The padlock step 103 can abut against the hook 831, thereby restricting the axial movement of the hook 831 and thus restricting the axial separation between the swivel seat 82 and the clamp tube 1.

[0048] Combined with appendix Figure 11In a further embodiment, a flexible pad 104 is provided inside the clamp tube 1 near the padlock step 103. When the elastic sheet 830 expands outward, the hook 831 is embedded in the flexible pad 104, or the hook 831 is embedded between the flexible pad 104 and the padlock step 103. The flexible pad 104 is generally made of a polymer material, such as silicone or TPE. When the hook 831 moves towards the inner wall of the clamp tube 1 as the elastic sheet 830 expands, the hook 831 can be embedded in the flexible pad 104, or the hook 831 can be embedded in the gap between the flexible pad 104 and the padlock step 103. At this time, the hook 831 achieves connection with the clamp tube 1 through embedding. This embedding also increases the force between the hook 831 and the clamp tube 1, making the axial connection and rotational transmission between the embedded rotating ring 83 and the clamp tube 1 more reliable.

[0049] Combined with appendix Figure 3 In another embodiment, a limiting platform 105 is provided on one side of the padlock step 103 inside the clamp tube 1. A locking gap exists between the limiting platform 105 and the padlock step 103, which is used to engage with the hook 831. In this embodiment, when the hook 831 engages within the locking gap, axial movement of the hook 831 is restricted, thereby restricting axial disengagement between the swivel seat 82 and the clamp tube 1. It is conceivable that the locking gap can be adjusted by the position or axial dimension of the limiting platform 105, thereby changing the degree of engagement tightness of the hook 831 in actual use.

[0050] In this embodiment, the detachable connection between the connecting shaft 4 and the fixed seat 3 can take many forms. A magnetic connection can be formed between the two. When the connecting shaft 4 and the fixed seat 3 are attracted together, the movement and rotation of the connecting shaft 4 can drive the fixed seat 3 to move and rotate. When the force applied by the operator to separate the two is greater than the magnetic attraction between them, the two can be separated, which means that the fixed seat 3 at the head of the connecting shaft 4 is removed.

[0051] In other embodiments, the connecting shaft 4 and the fixed seat 3 can be connected by a snap-fit ​​mechanism. When they are engaged, they are locked together by various snap-fit ​​mechanisms. The movement and rotation of the connecting shaft 4 can drive the fixed seat 3 to move and rotate. When the operator needs to separate the connecting shaft 4 and the fixed seat 3, the snap-fit ​​mechanism can be operated to separate them.

[0052] In a preferred embodiment, the connecting shaft 4 and the fixed base 3 are connected by a plug-in joint to form a detachable anti-reverse connection. This embodiment is specifically manifested as follows: [The text abruptly ends here, likely due to an incomplete translation or missing information.] Figure 8 and attached Figure 9A through groove 300 is provided on the side of the fixing seat 3 near the embedded rotating ring 83. The through groove 300 extends away from the embedded rotating ring 83, so that part of the fixing seat 3 is divided into a first elastic segment 301 and a second elastic segment 302. A first type groove is provided on the first elastic segment 301, and a second type groove is provided on the second elastic segment 302. The first type groove and the second type groove are correspondingly spliced ​​to form a backstop groove 303. And in conjunction with the attached... Figure 6 The end of the connecting shaft 4 is provided with a backstop boss 400, and the backstop groove 303 and the backstop boss 400 form a backstop connection.

[0053] The first elastic segment 301 and the second elastic segment 302 formed after the through groove 300 is provided on the fixed seat 3 can have good elasticity. When the anti-retraction boss 400 at the head of the connecting shaft 4 is gradually inserted into the anti-retraction groove 303 on the fixed seat 3, the first elastic segment 301 and the second elastic segment 302 will move away from each other due to the force, providing space for the insertion of the anti-retraction boss 400.

[0054] After the anti-reverse boss 400 is fully inserted into the anti-reverse groove 303, the first elastic segment 301 and the second elastic segment 302 will restore their elastic deformation. At this time, the fixed seat 3 will cooperate with the connecting shaft 4. When the connecting shaft 4 moves axially, the fixed seat 3 will move axially accordingly, and the clamp 2 will open and close accordingly.

[0055] In a typical configuration, the anti-reverse groove 303 and the anti-reverse boss 400 form an interference fit. That is, after resetting, the first elastic segment 301 and the second elastic segment 302 will clamp the anti-reverse boss 400 of the connecting shaft 4. At this time, when the connecting shaft 4 rotates circumferentially, it can drive the fixed seat 3 to rotate circumferentially. When the fixed seat 3 is provided with a clamping piece 2, the clamping piece 2 will also rotate with the rotation of the fixed seat 3.

[0056] To achieve a locking connection, the structural profile of the locking boss 400 is generally designed such that it is relatively easy to insert into the locking groove 303, but more difficult to remove from the locking groove 303, and the locking groove 303 must also be matched accordingly. (See attached diagram) Figure 6 As shown, the anti-reverse boss 400 can be n conical or frustum-shaped structures (n is a positive integer) arranged continuously along the axial direction. The pointed part of the conical or frustum-shaped structure faces the side where the clamping piece 2 is located, and the bottom of the conical or frustum-shaped structure faces the side where the rotating ring seat 82 is located. This ensures that when the connecting shaft 4 moves towards the fixed seat 3, the anti-reverse boss 400 can be easily inserted into the anti-reverse groove 303, and when the connecting shaft 4 moves away from the fixed seat 3, the anti-reverse boss 400 and the anti-reverse groove 303 are difficult to disengage.

[0057] In some preferred embodiments, n is greater than 1, for example, n is 2. In this case, the presence of multiple conical or frustum-shaped structures further enhances the stability of the connection between the connecting shaft 4 and the fixed seat 3, which can prevent the clamping piece 2 from being released prematurely, while ensuring the clamping force of the product.

[0058] Alternatively, the anti-reverse boss 400 can also be configured as a mechanism similar to ratchet or barbs, so that when the anti-reverse boss 400 is inserted, the anti-reverse groove 303 undergoes elastic deformation, allowing the anti-reverse boss 400 to pass through; when the anti-reverse boss 400 is fully inserted, the anti-reverse groove 303 returns to its original state, and a mechanical block is formed between the anti-reverse groove 303 and the anti-reverse boss 400 to prevent reverse disengagement.

[0059] Understandably, the radial dimension of the fixed seat 3 must be smaller than the inner diameter of the clamp tube 1 so that the fixed seat 3 can move freely within the clamp tube 1, causing the clamping piece 2 to retract or extend into the clamp tube 1. In conjunction with the aforementioned embodiments, the radial dimension of the fixed seat 3 must be smaller than the inner diameter of the clamp tube 1 to ensure that the first elastic segment 301 and the second elastic segment 302 have sufficient deformation space. However, if the radial dimension of the fixed seat 3 is generally very small, it will increase the difficulty of manufacturing and assembly, and an excessively small fixed seat 3 will wobble within the clamp tube 1, causing the fixed seat 3 to become eccentric, thereby further affecting the assembly connection between the fixed seat 3 and the connecting shaft 4.

[0060] Therefore, combined with the appendix Figure 11 In one embodiment, at least two inwardly protruding limiting portions 100 are evenly provided on the clamp tube 1 along the circumference, and the limiting portions 100 abut against the outer wall of the fixing seat 3.

[0061] In this embodiment, the limiting part 100 can be a protruding structure formed by the inward recess of the wall surface of the clamp tube 1. The limiting part 100 abuts against the fixed seat 3 to limit the fixed seat 3, thereby improving the situation of the fixed seat 3 shaking and eccentricity in the clamp tube 1, so as to ensure that the fixed seat 3 and the connecting shaft 4 are more accurate and reliable when assembled and connected.

[0062] In another embodiment, based on the first elastic segment 301 and the second elastic segment 302 provided in the fixing seat 3, the radial dimension of the fixing seat 3 gradually converges from one end away from the connecting shaft 4 to the other end. This design allows for a relatively larger gap between the end of the fixing seat 3 near the connecting shaft 4 and the clamp tube 1, thus ensuring that the first elastic segment 301 and the second elastic segment 302 have sufficient deformation space. At the same time, a relatively small gap is maintained between the other end of the fixing seat 3 and the clamp tube 1. This arrangement also prevents the average gap between the main body of the fixing seat 3 and the clamp tube 1 from being too small, thereby reducing the difficulty of processing and assembly. Furthermore, due to the control of the gap, the wobble and eccentricity of the fixing seat 3 within the clamp tube 1 are improved to some extent.

[0063] As explained above, after the connecting shaft 4 and the fixed base 3 are detachably connected, the rotation of the connecting shaft 4 can drive the rotation of the fixed base 3. When the connecting shaft 4 and the fixed base 3 are connected by magnetic attraction, the frictional force generated by the magnetic attraction is a necessary condition for the transmission of rotation between them. Based on the aforementioned embodiments, when the anti-reverse groove 303 and the anti-reverse boss 400 form an anti-reverse connection, the anti-reverse boss 400 on the connecting shaft 4 can be firmly clamped by the anti-reverse groove 303, so that there is sufficient friction between the connecting shaft 4 and the fixed base 3, so that the fixed base 3 can be rotated when the connecting shaft 4 rotates.

[0064] In a preferred embodiment, in conjunction with the appendix Figure 5 and attached Figure 6 A rotating connecting section 401 is provided on the connecting shaft 4 near the anti-reverse boss 400; a first mating groove is provided on the first elastic segment 301, and a second mating groove is provided on the second elastic segment 302. The first mating groove and the second mating groove are combined to form a rotating connecting groove 304, which is coupled with the rotating connecting section 401.

[0065] Specifically, the rotating connecting section 401 can be a flat square, and the inner wall contour of the rotating connecting groove 304 is a flat hole that matches the flat square. The cooperation between the flat square and the flat hole can further ensure the transmission of rotational motion.

[0066] Similarly, the coupling between the rotating connecting section 401 and the rotating connecting groove 304 can also be a spline-like fit, that is, the rotating connecting section 401 is provided with a protrusion, and the rotating connecting groove 304 is provided with a corresponding groove, and the rotation is transmitted through the fit of the protrusion and the groove.

[0067] And as attached Figure 12 and attached Figure 13 In the embodiment shown, the main body of the rotating connecting section 401 is cylindrical, but at least one anti-slip surface 4011 is provided on it. The main body of the rotating connecting groove 304 is a cylindrical hole, but at least one mating surface 3041 is provided on the inner wall of the cylindrical hole. When the rotating connecting section 401 and the rotating connecting groove 304 are mated, the anti-slip surface 4011 and the mating surface 3041 abut to form a surface contact for transmitting force, thereby realizing the transmission of rotational motion between the connecting shaft 4 and the fixed seat 3.

[0068] For the reloadable connection mechanism of this embodiment, one assembly method is as follows: Initially, the embedded rotating ring 83 is loaded into the rotating ring seat 82 and forms a whole, and the fixed seat 3 is loaded into the clamp tube 1 and forms a whole. Keeping the clamp tube 1 and the rotating ring seat 82 side by side and maintaining internal communication between the two wholes, the connecting shaft 4 is passed through the embedded rotating ring 83. During the process of the connecting shaft 4 passing through the embedded rotating ring 83, the elastic plate 830 on the embedded rotating ring 83 is squeezed open, and the elastic plate 830 expands outward. The hook 831 at the end of the elastic plate 830 can then move towards the inner wall of the clamp tube 1. After the circumferentially evenly arranged elastic plate 830 is stretched open, it forms tension on the inner wall of the clamp tube 1, so that the embedded rotating ring 83 can be tightly connected with the clamp tube 1. As the connecting shaft 4 continues to move towards the clamp tube 1, the connecting shaft 4 connects with the fixed seat 3, for example, through a magnetic connection, a snap-fit ​​connection as described in the previous embodiment, or a locking connection formed by the insertion of the locking boss 400 into the locking groove 303. Thus, the clamp tube 1, fixed seat 3, swivel seat 82, embedded swivel 83, and connecting shaft 4 are assembled into a whole, wherein the rotation and axial movement of the connecting shaft 4 can at least drive the rotation and axial movement of the fixed seat 3.

[0069] In actual implementation, the fixed seat 3 is equipped with a clamping piece 2. Therefore, when the connecting mechanism needs to be disengaged, it is actually the clamp tube 1 and the clamping piece 2 that are disengaged from the rest of the parts. This embodiment mainly focuses on the disengagement of the clamp tube 1 from the rest of the parts. During the surgical operation, the clamp tube 1 (including the clamping piece 2) is left on the affected area. The connecting shaft 4 is pulled, causing the clamping piece 2 to be disengaged from the fixed seat 3 (meaning that the connection structure between the clamping piece 2 and the fixed seat 3 is broken or deformed). The fixed seat 3 moves together with the connecting shaft 4 towards the rotating seat 82. When the connecting shaft 4 and the fixed seat 3 are pulled away from the embedded rotating ring 83, the elastic piece 830 on the embedded rotating ring 83 loses its support and springs back to its original position. The hook 831 retracts towards the center of the embedded rotating ring 83. The hook 831 disengages from the contact with the inner wall of the clamp tube 1 and will not contact the padlock step 103. The fixed seat 3, the embedded rotating ring 83, and the connecting shaft 4 can then be disengaged from the connection with the clamp tube 1. Furthermore, in practical operation, the rotating seat 82 is generally fixedly connected to the hose on the clamping device, so the rotating seat 82 can also leave the clamp tube 1 as the hose is pulled out.

[0070] Subsequently, when the connecting mechanism of the clamp tube 1 is released and the fixed seat 3 with the clamp 2 needs to be reloaded, the operator only needs to remove the fixed seat 3 fixed to the connecting shaft 4 and replace it with a new fixed seat 3 with the clamp 2.

[0071] Example 2

[0072] Combined with appendix Figure 1-15This embodiment proposes a clamp that includes the reloadable connection mechanism described in the technical solution of embodiment 1, and also includes a clamping piece 2 and a pin 5. A hook 305 is provided on the fixing base 3, and the pin 5 passes through the through hole on the clamping piece 2 and is hooked on the hook 305.

[0073] The clip 2 can be made of stainless steel and has outward elasticity. The end where clip 2 is located is defined as the distal end (i.e., the attached end). Figure 1 The upper side), the other end is the proximal end (i.e., the appendix). Figure 1 (Lower side) When the fixed seat 3 moves axially within the clamp tube 1, if the fixed seat 3 moves to the distal end, the clamp 2 will open accordingly; if the fixed seat 3 moves to the proximal end, the clamp 2 will close due to the constraint of the clamp tube 1.

[0074] In one embodiment, baffles 102 are symmetrically arranged on the clamp tube 1. The bent baffles 102 form a gap with the edge of the clamp tube 1. The clamp 2 passes through the gap, thereby restricting the clamp 2 from falling out of the cavity of the clamp tube 1. The gap can also form a rotation space between the clamp 2 and the clamp tube 1.

[0075] In a further embodiment, in conjunction with the appendix Figure 10 and attached Figure 11 The baffle 102 is also provided with a support lug. The size and position of the support lug can adjust the size of the aforementioned gap. Thus, by selecting clamp tubes 1 of different specifications of support lug or baffle 102, the space for the clamp 2 to rotate can be changed, thereby further changing the restriction on the rotation of the clamp 2.

[0076] The release process of clip 2 is shown in the attached figure. Figure 14 and attached Figure 15 As shown, in this embodiment, when the clamp 2 is not released, the clamp 2 needs to be fixedly connected to the fixed base 3. When the clamp needs to be released, the clamp 2 and the fixed base 3 can be released by breaking the connection.

[0077] In this embodiment, a hook 305 is provided on the fixing base 3, and a pin 5 passes through the tail of the clamp 2 and is hooked onto the hook 305. In this implementation, the clamp 2 can be detached from the fixing base 3 by deformation or breakage of the hook 305. After detachment, the clamp 2 is constrained by the clamp tube 1 to maintain the clamping of the diseased tissue, and the fixing base 3 detaches from the clamp tube 1 together with the connecting shaft 4.

[0078] In actual operation, after the previous clamp 2 and clamp tube 1 are released, the connecting shaft 4 and the fixed seat 3 are simultaneously removed from the human body. Then, medical staff can manually remove the fixed seat 3 that is connected to the connecting shaft 4 to prevent it from retracting, and then reload a modular clamp consisting of clamp tube 1, clamp 2 and fixed seat 3. The reloading process only requires inserting the connecting shaft 4 into the new fixed seat 3, thereby realizing the reloading of clamp 2.

[0079] After being released, the clamp 2 remains clamped by the clamp tube 1. Due to the lever effect, the tail of the clamp 2 will tilt upwards. In a preferred embodiment, a hanging platform 200 is provided at the tail of the clamp 2, and a positioning part 101 is provided on the inner wall of the clamp tube 1. The positioning part 101 is a stepped structure or a slot. In this embodiment, the tilting of the tail of the clamp 2 can be cleverly utilized to allow the hanging platform 200 to engage with the positioning part 101, thereby fixing the open tail of the clamp 2 and preventing the clamp 2 from detaching from the clamp tube 1 at the distal end.

[0080] In a further embodiment, the fixing base 3 is provided with a plug-in section 306, and the plug-in section 306 is provided with a slot 307 with an opening. The tail of the clip 2 is inserted into the slot 307, and the opening is used to accommodate the mounting platform 200. In this embodiment, the clip 2 can be inserted into the slot 307 first. The opening of the slot 307 is used to avoid interference with the mounting platform 200. At the same time, the cooperation between the clip 2 and the slot 307, as well as the cooperation between the mounting platform 200 and the opening, achieves effective positioning between the clip 2 and the fixing base 3. Then, the connection between the clip 2 and the fixing base 3 is achieved by the pin 5, thereby further improving the convenience of assembly between the clip 2 and the fixing base 3.

[0081] Furthermore, a sleeve 6 can be fitted onto the outer side of the insertion section 306, thereby sealing the opening of the slot 307 through the sleeve 6, thus further preventing the clip 2 from loosening from the fixing seat 3 and strengthening the stability of the connection between the clip 2 and the fixing seat 3.

[0082] Example 3

[0083] Combined with appendix Figure 16 This embodiment proposes a clamping device, which includes the clamp described in the technical solution of the embodiment, and also includes an operating component and a connecting component.

[0084] The operating components include a handle body 70, a push-pull block 71 slidably mounted on the handle body 70, and a roller 72 rotatably mounted on the handle body 70. The connecting components include a flexible tube 80 and a spindle 81. The flexible tube 80 is sleeved on the outside of the spindle 81, and both ends of the flexible tube 80 are fixedly connected to the handle body 70 and the rotating ring seat 82, respectively. One end of the spindle 81 is fixedly connected to the connecting shaft 4, and the spindle 81 passes through the roller 72 and is fixedly connected to the roller 72. At the same time, the other end of the spindle 81 is fixedly connected to the push-pull block 71.

[0085] The working principle of the clamping device in this embodiment is as follows: The operator holds the operating component, and the connecting component passes through the endoscope working channel to insert the clamp into the vicinity of the affected area. The push-pull block 71 can control the pulling movement of the spindle 81, thereby controlling the axial movement of the fixing seat 3 through the connecting shaft 4, so that the clamp 2 opens or closes. At the same time, the rotation of the roller 72 drives the spindle 81 to rotate, thereby driving the fixing seat 3 and the clamp 2 to rotate synchronously through the connecting shaft 4, so as to adjust the position and angle of the clamp 2.

[0086] After the clip 2 clamps the affected area, continue pulling the push-pull block 71 to fully retract the clip 2 into the clamp tube 1, and break the connection between the fixing seat 3 and the clip 2, so that the clip 2 is disengaged from the fixing seat 3. At the same time, pull the entire connecting assembly to disengage the rotating seat 82 from the clamp tube 1, thereby completely releasing the clip 2.

[0087] The connecting assembly is then removed from the endoscope working channel, and the retaining seat 3 of the previous clamp left on the connecting shaft 4 is removed. The new clamp is then removed, and the connecting shaft 4 is connected to the new retaining seat 3 to achieve reloading and subsequent surgical operations.

[0088] 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 to this. 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 reloadable connection mechanism, characterized in that, It includes a clamp tube (1), a fixed seat (3), a swivel seat (82), an embedded swivel (83), and a connecting shaft (4); The clamp tube (1) is located on one side of the rotating seat (82), the fixed seat (3) is slidably disposed in the clamp tube (1), and a padlock step (103) is provided in the clamp tube (1) near the rotating seat (82). The rotating seat (82) is sleeved on the outside of the embedded rotating ring (83). The embedded rotating ring (83) is provided with a plurality of elastic pieces (830) along the circumferential direction. The elastic pieces (830) are recessed into the interior of the embedded rotating ring (83). The ends of the elastic pieces (830) are provided with hooks (831). The connecting shaft (4) passes through the embedded rotating ring (83) and is detachably connected to the fixed seat (3). The connecting shaft (4) abuts tightly against the elastic piece (830) to make the elastic piece (830) expand outward. The padlock step (103) is used to hook with the hook (831).

2. A reloadable attachment mechanism according to claim 1, wherein, A flexible pad (104) is provided inside the clamp tube (1) near the padlock step (103). When the elastic sheet (830) expands outward, the claw (831) is embedded in the flexible pad (104), or the claw (831) is embedded between the flexible pad (104) and the padlock step (103).

3. A reloadable attachment mechanism according to claim 1, wherein, A limiting platform (105) is provided on one side of the padlock step (103) inside the clamp tube (1). There is a snap-fit ​​gap between the limiting platform (105) and the padlock step (103), and the snap-fit ​​gap is used to engage with the hook (831).

4. A reloadable attachment mechanism according to claim 1, wherein, At least two inwardly protruding limiting parts (100) are evenly arranged along the circumference of the clamp tube (1), and the limiting parts (100) abut against the outer wall of the fixing seat (3).

5. A reloadable attachment mechanism according to claim 1, wherein, The fixing seat (3) is provided with a through groove (300) on the side near the embedded rotating ring (83). The through groove (300) extends away from the side of the embedded rotating ring (83) so that part of the fixing seat (3) is divided into a first elastic segment (301) and a second elastic segment (302). The first elastic segment (301) is provided with a first groove, and the second elastic segment (302) is provided with a second groove. The first groove and the second groove are respectively spliced ​​together to form a backstop groove (303). The end of the connecting shaft (4) is provided with a backstop boss (400), and the backstop groove (303) and the backstop boss (400) form a backstop connection.

6. A reloadable attachment mechanism according to claim 5, wherein, The radial dimension of the fixed seat (3) gradually converges from one end away from the connecting shaft (4) to the other end.

7. A reloadable attachment mechanism according to claim 5, wherein, A rotating connecting section (401) is provided on the connecting shaft (4) near the anti-reverse boss (400). The first elastic segment (301) is provided with a first mating groove, and the second elastic segment (302) is provided with a second mating groove. The first mating groove and the second mating groove are combined to form a rotating connecting groove (304), and the rotating connecting groove (304) is coupled with the rotating connecting section (401).

8. A collet comprising a reloadable connection mechanism according to any one of claims 1 to 7, characterized in that It also includes a clip (2) and a pin (5). The fixing base (3) is provided with a hook (305). The pin (5) passes through the through hole on the clip (2) and is hooked on the hook (305).

9. A collet according to claim 8, wherein, The tail of the clamp (2) is provided with a hanging platform (200), and the inner wall of the clamp tube (1) is provided with a positioning part (101). When the positioning part (101) is engaged with the hanging platform (200), the positioning part (101) is used to restrict the clamp (2) from moving towards its head end.

10. A clipping instrument comprising a collet according to claim 9, characterized in that It also includes operation components and connection components; The operating component includes a handle body (70), a push-pull block (71) is slidably disposed on the handle body (70), and a roller (72) is rotatably disposed on the handle body (70). The connecting assembly includes a flexible tube (80) and a spindle (81). The flexible tube (80) is sleeved on the outside of the spindle (81). Both ends of the flexible tube (80) are fixedly connected to the handle body (70) and the rotating seat (82) respectively. One end of the spindle (81) is fixedly connected to the connecting shaft (4). The spindle (81) passes through the roller (72) and is fixedly connected to the roller (72). At the same time, the other end of the spindle (81) is fixedly connected to the push-pull block (71).

Images