A reloadable attachment mechanism, collet and clamping device

Abstract

This utility model relates to the field of medical device technology, specifically to a reusable connecting mechanism, clamp, and clamping device. The clamp tube and rotating ring seat are adjacent, a fixed seat is located inside the clamp tube, and a padlock protrusion is provided inside the clamp tube. A retaining element is fixed inside the clamp tube and includes an elastic baffle. An embedded rotating ring is movably disposed within the rotating ring seat, and elastic hooks are evenly distributed on the embedded rotating ring, with the elastic hooks inclined towards the axial center line of the embedded rotating ring. The elastic hooks pass through the retaining element, and the elastic baffle abuts against the elastic hooks. A connecting shaft passes through the embedded rotating ring and is detachably connected to the fixed seat. When the elastic hooks expand outward, they abut against the inner wall of the clamp tube and / or the padlock protrusion. This utility model enables rapid and efficient reloading of the clamping device and reduces the probability of assembly failure. The retaining element constrains the embedded rotating ring, ensuring that after multiple assemblies, the embedded rotating ring can still be retracted under the action of the retaining element, ensuring the detachment of the elastic hooks from the clamp tube.

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, endoscopic hemostasis using hemostatic clips has become the preferred treatment method for gastrointestinal bleeding. Hemostatic clip closure requires the use of clamping instruments such as hemostatic clips. A typical clamping instrument consists of an operating mechanism, a clamping mechanism, and a delivery mechanism. In practical applications, the clamping and delivery parts are inserted into the patient's digestive tract through the endoscope's working channel. When the clamping site reaches the pre-operative position within the patient's body, the operating part is activated to apply clamping force, thereby stopping bleeding or closing the surgical wound.

[0003] Currently, clamp instruments used in clinical practice can be divided into two categories: integrated clamp instruments and separate clamp instruments. Among them, the clamping mechanism and the delivery mechanism of integrated instruments are designed for single use, while only the clamping mechanism of separate instruments is a non-reusable part, and its delivery mechanism can be reused. Therefore, the clamping mechanism can be replaced, that is, a new clamping mechanism can be loaded after the previous clamping mechanism is released.

[0004] However, existing clamp instruments still have certain drawbacks. For integrated clamp instruments, the clamping mechanism cannot be reloaded, and changing the clamping mechanism during surgery requires replacing the entire integrated instrument. Existing separate clamp instruments, on the other hand, suffer from drawbacks such as long reloading time for the clamping mechanism, low efficiency, and poor assembly stability.

[0005] The complex interface between the existing clamping mechanism and the conveying mechanism results in long reassembly time and low efficiency of the clamping mechanism. Furthermore, due to the complexity, precision and small size of the parts, assembly failure is likely, which in turn leads to functional abnormalities of the instrument after assembly.

[0006] In addition, although a new clamping mechanism can be reassembled on the conveying mechanism, the interface is prone to material fatigue due to repeated assembly, which greatly affects the service life and results in a very limited number of reassemblies, greatly reducing its practicality. Utility Model Content

[0007] To address the technical problems of existing clamping devices, this utility model provides a reloadable connecting mechanism, clamp, and clamping device. Through the combined arrangement of a clamp tube, a fixed base, a rotating ring base, an embedded rotating ring, and a connecting shaft, it enables rapid and efficient reloading between the clamping mechanism and the conveying mechanism, reducing the probability of assembly failure. Furthermore, a constricting component ensures the constraint of the embedded rotating ring. Even after repeated assembly, if the material of the embedded rotating ring itself fatigues, the constricting component ensures that the elastic hook can still disengage from the clamp tube.

[0008] The technical solution provided by this utility model is as follows: a reusable connection mechanism, including a clamp tube, a fixed seat, a rotating seat, an embedded rotating ring, a retaining member, and a connecting shaft; the clamp tube and the rotating seat are adjacent to each other, the fixed seat is movably disposed within the clamp tube, and a padlock boss is provided within the clamp tube; the retaining member is fixed within the clamp tube, the retaining member is located on the side of the padlock boss near the rotating seat, and the retaining member includes elastic baffles, the elastic baffles are evenly distributed circumferentially, and the ends of the elastic baffles all point towards the retaining member. The axial centerline of the component; the embedded rotating ring is movably disposed within the rotating ring seat, and elastic hooks are evenly distributed on the embedded rotating ring, with the ends of the elastic hooks facing outwards and the elastic hooks inclined towards the axial centerline of the embedded rotating ring; the elastic hooks pass through the constricting component, and the elastic baffle abuts against the elastic hooks; the connecting shaft passes through the embedded rotating ring and is detachably connected to the fixed seat, while the connecting shaft abuts against the elastic hooks, so that the elastic hooks expand outwards and abut against the inner wall of the clamp tube and / or the padlock boss.

[0009] Optionally, the width of the elastic baffle gradually decreases from the root to the end.

[0010] Optionally, it also includes a retaining ring, which is embedded in the tail of the clamp tube to form the padlock boss, and the retractor is fixed to the inner wall of the retaining ring.

[0011] Optionally, the arrangement density of the elastic baffle is greater than or equal to the arrangement density of the elastic hook.

[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, 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.

[0014] Optionally, a rotating connecting section is provided on the connecting shaft near the anti-reverse boss; a first mating groove is provided on the first elastic segment, and a second mating groove is provided on the second elastic segment. The first mating groove and the second mating groove are combined to form a rotating connecting groove, and the rotating connecting groove is coupled with the rotating connecting section.

[0015] A chuck includes the aforementioned reloadable connecting mechanism, and further includes a clamping plate and a pin. A connecting portion is provided on the fixed base, and the tail of the clamping plate is connected to the connecting portion via the pin. A hanging platform is provided at the tail of the clamping plate, and a positioning portion is provided on the inner wall of the clamp tube, the positioning portion being used to engage with the hanging platform.

[0016] Optionally, the fixing base is provided with a plug-in section, the plug-in section is provided with a slot with an opening, the tail of the clamp is inserted into the slot, and the opening is used to accommodate the hanging platform; a sleeve is sleeved on the outside of the plug-in section, and the sleeve is used to close the opening.

[0017] 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 being sleeved on the outside of the mandrel, and both ends of the flexible tube being 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, while the other end of the mandrel is fixedly connected to the push-pull block.

[0018] Beneficial effects

[0019] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: Addressing the technical problems of defects in existing clamping devices, this utility model, through the combined arrangement of clamp tube, fixed seat, rotating ring seat, embedded rotating ring, and connecting shaft, enables rapid and efficient repeated loading between the clamping mechanism and the conveying mechanism, and reduces the probability of assembly failure; furthermore, the constricting component ensures the constraint effect on the embedded rotating ring, and even after repeated assembly, even if the material of the embedded rotating ring itself fatigues, the constricting component can still ensure the elastic hook disengages from the clamp tube. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the reloadable connection mechanism proposed in an embodiment of the present invention.

[0021] Figure 2 This is a cross-sectional view of the reloadable connection mechanism proposed in an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the embedded rotating ring structure proposed in an embodiment of the present utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the retractor proposed in an embodiment of the present utility model.

[0024] Figure 5 This is a partial cross-sectional view of the reloadable connection mechanism proposed in an embodiment of the present invention.

[0025] Figure 6 This is one of the structural schematic diagrams of the connecting shaft proposed in the embodiment of this utility model.

[0026] Figure 7 This is a partial three-dimensional structural schematic diagram of the reloadable connection mechanism proposed in an embodiment of the present utility model.

[0027] Figure 8 This is one of the structural schematic diagrams of the fixing base proposed in the embodiment of this utility model.

[0028] Figure 9 This is the second structural schematic diagram of the fixing base proposed in the embodiment of this utility model.

[0029] Figure 10 This is one of the structural schematic diagrams of the clamp tube proposed in the embodiment of this utility model.

[0030] Figure 11 This is the second schematic diagram of the clamp tube proposed in the embodiment of this utility model.

[0031] Figure 12 This is the second structural schematic diagram of the connecting shaft proposed in the embodiment of this utility model.

[0032] Figure 13 This is the second structural schematic diagram of the fixing base proposed in the embodiment of this utility model.

[0033] Figure 14 This is one of the schematic diagrams of the clip release process proposed in the embodiments of this utility model.

[0034] Figure 15 This is the second schematic diagram of the clip release process proposed in the embodiment of this utility model.

[0035] Figure 16 This is a schematic diagram of the clamping device proposed in an embodiment of the present invention. Detailed Implementation

[0036] 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.

[0037] 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.

[0038] Example 1

[0039] Combined with appendix Figure 1 To be continued Figure 13 This embodiment proposes a reloadable connection mechanism, including a clamp tube 1, a fixed seat 3, a swivel seat 82, an embedded swivel 83, a gathering member 9, and a connecting shaft 4.

[0040] Combined with appendix Figure 2The clamp tube 1 and the swivel seat 82 are adjacent. The clamp tube 1 is generally made of stainless steel or other metal materials, and a padlock protrusion 103 is provided inside the clamp tube 1. The fixing seat 3 is movably disposed inside the clamp tube 1, that is, the fixing seat 3 can rotate or slide inside the clamp tube 1. The fixing seat 3 is generally provided with an elastic clamping piece 2. 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 close due to 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 open naturally.

[0041] Combined with appendix Figure 4 In this embodiment, the retaining member 9 is fixed inside the clamp tube 1. The retaining member 9 is located on the side of the padlock boss 103 near the rotating seat 82. The retaining member 9 includes elastic baffles 90, which are evenly distributed circumferentially, and the ends of the elastic baffles 90 all point to the axial center line of the retaining member 9. (See attached diagram.) Figure 3 An embedded rotating ring 83 is movably disposed within a rotating ring seat 82. Elastic hooks 830 are evenly disposed on the embedded rotating ring 83. The ends of the elastic hooks 830 face outward and are inclined toward the axial center line of the embedded rotating ring 83.

[0042] Combined with appendix Figure 16 The reloadable connecting mechanism of this embodiment is used in clamping devices. Clamping devices generally include an operating component and a connecting component. The operating component controls the rotation or axial movement of the spindle 81 in the connecting component. The connecting shaft 4 is connected to the spindle 81 and can be driven by the spindle 81 to achieve rotation or axial movement. The connecting component also includes a flexible tube 80 sleeved outside the spindle 81. The flexible tube 80 generally serves as an outer sleeve for the spindle 81, providing isolation and protection. The rotating ring seat 82 is generally fixedly disposed at the end of the flexible tube 80. That is, in this embodiment, the connecting shaft 4 is used to transmit the action of the operating component; the rotating ring seat 82 in this embodiment serves both as a structure for housing the embedded rotating ring 83 and as a structure for forming a connection base with the rest of the clamping device.

[0043] Based on the above structure, combined with the appendix Figure 1 and attached Figure 2The reloadable connection mechanism of this embodiment is assembled as follows: Initially, the ends of the clamp tube 1 and the swivel seat 82 abut against each other, and the elastic hook 830 of the embedded swivel 83 is in a retracted state. The retracted elastic hook 830 is passed through the constricting member 9 to form a preliminary connection. Subsequently, the control connecting shaft 4 is inserted into the swivel seat 82. During the insertion process, the connecting shaft 4 will simultaneously pass through the embedded swivel 83 and apply a radial force to the elastic hook 830. This force will push the elastic hook 830 towards the inner wall of the clamp tube 1 (the elastic baffle 90 will also be pushed open at the same time), so that the elastic hook 830 has an outward expansion tendency. This outward expansion tendency causes the end of the elastic hook 830 to abut against the inner wall of the clamp tube 1. This abutment can also make the embedded swivel 83 and the inner wall of the clamp tube 1 form a tension fit, thereby connecting the embedded swivel 83 and the clamp tube 1.

[0044] Understandably, when the elastic hook 830 extends outward sufficiently, the friction generated by the elastic hook 830 and the inner wall of the clamp tube 1 due to their mutual contact is sufficient to ensure that the rotating seat 82 transmits its rotation to the clamp tube 1. That is, the circumferential rotation of the connecting shaft 4 can 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.

[0045] Furthermore, due to the presence of the padlock boss 103, when there is a tendency for the embedded rotating ring 83 and the clamp tube 1 to move axially away from each other, the padlock boss 103 will axially limit the elastic hook 830 in the expanded state, thereby ensuring the axial connection between the embedded rotating ring 83 and the clamp tube 1.

[0046] When the connecting shaft 4 passes through the embedded rotating ring 83 and the converging member 9 and enters the clamp tube 1, the connecting shaft 4 and the fixed base 3 can form a detachable connection. Generally, the detachable connection can be formed by magnetic attraction or by snap-fit.

[0047] When the above assembly is completed, the elastic hook 830 on the embedded swivel 83 always tends to recover its deformation due to its own elastic deformation. Therefore, when the connecting shaft 4 is pulled away from the embedded swivel 83, the end of the elastic hook 830 will converge towards the axial center line of the embedded swivel 83, thereby releasing the engagement with the clamp tube 1. At this time, the clamp tube 1 can be disconnected from the embedded swivel 83.

[0048] The removal of the connecting shaft 4 and the disengagement of the clamp tube 1 from the embedded rotating ring 83 generally occur after the release of the clamp 2. The release of the clamp 2 means that after the clamp 2 is clamped at the site of the diseased tissue, the clamp 2 and the clamp tube 1 remain at the site of the diseased tissue, while the remaining structures leave the site of the diseased tissue.

[0049] In this embodiment, after the clamp 2 is released, the end of the connecting shaft 4 is still connected to the fixing seat 3. At this time, it is only necessary to remove the fixing seat 3, take a new module consisting of the clamp tube 1 and the fixing seat 3 (including the clamp 2), and repeat the above assembly steps to achieve repeated loading.

[0050] When the number of repeated loading cycles is high, the elastic hook 830 on the embedded rotating ring 83 will gradually fatigue and lose its ability to retract and reset towards the axial centerline of the embedded rotating ring 83. However, in this embodiment, the connecting shaft 4 passes through the embedded rotating ring 83 and also passes through the retracting member 9. The elastic baffle 90 on the retracting member 9 that is pushed open also has a reset tendency.

[0051] Therefore, it can be understood that when the elastic baffle 90 and the elastic hook 830 come into contact, the resetting tendency of the elastic baffle 90 will drive the resetting of the elastic hook 830. Thus, even if the elastic hook 830 on the embedded swivel 83 gradually fatigues and loses its resetting ability, the elastic baffle 90 will still ensure the resetting of the elastic hook 830. Moreover, even when the elastic hook 830 is not significantly fatigued, the elastic baffle 90 will still provide the aforementioned force to the elastic hook 830, assisting in the resetting of the elastic hook 830. This assistance can also delay the fatigue of the elastic hook 830. In summary, the design of the constricting member 9 extends the service life of the elastic hook 830, thereby increasing the number of times the connecting mechanism can be repeatedly loaded to a certain extent.

[0052] Furthermore, since the retractor 9 is fixed inside the clamp tube 1, and the connecting shaft 4 needs to pass through the retractor 9, there is also friction between the connecting shaft 4 and the retractor 9. This friction also helps to transmit movement between the clamp tube 1 and the connecting shaft 4. In addition, the elastic hook 830 needs to pass through the elastic baffle 90, and the two also achieve a detachable connection. This connection also helps to strengthen the connection between the clamp tube 1 and the embedded swivel 83.

[0053] Combined with appendix Figure 4 In a preferred embodiment, the width of the elastic baffle 90 gradually decreases from the root to the end. This design makes the elastic baffle 90 have a non-linear stiffness design, giving it better elasticity and a longer service life.

[0054] Furthermore, in a preferred embodiment, the arrangement density of the elastic baffle 90 is greater than or equal to the arrangement density of the elastic hook 830. In this case, the elastic baffle 90 has better rebound capability and better lifespan, and can more evenly abut against the elastic hook 830 to ensure the uniform reset of the elastic hook 830.

[0055] As can be seen from the foregoing embodiments, the padlock boss 103 can limit the elastic hook 830 to prevent axial disengagement of the clamp tube 1 and the embedded swivel 83. The padlock boss 103 can take various forms, as detailed in the appendix. Figure 2 and attached Figure 5 In one embodiment, a retaining ring 104 is embedded in the tail of the clamp tube 1. The step formed by the retaining ring 104 and the inner wall of the clamp tube 1 constitutes a padlock boss 103, and the retaining member 9 is further fixed to the inner wall of the retaining ring 104. In another embodiment, the outer diameter of the retaining member 9 has a certain thickness, which can form a step with the inner wall of the clamp tube 1, thereby constituting the padlock boss 103.

[0056] In this embodiment, the detachable connection between the connecting shaft 4 and the fixed base 3 can take various forms, combined with the attached... Figure 8 and attached Figure 9 In a preferred embodiment, a 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. A backstop boss 400 is provided at the end of the connecting shaft 4, and the backstop groove 303 and the backstop boss 400 form a backstop connection.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] To achieve a non-retractable connection, the structural profile of the non-retractable boss 400 is generally designed so that it is relatively easy to insert into the non-retractable groove 303, but more difficult to remove from it, and the non-retractable groove 303 must also match it. The non-retractable boss 400 can be n conical or frustum-shaped structures (n is a positive integer) arranged continuously along the axial direction, with the pointed part of the conical or frustum-shaped structure facing the side where the clamp 2 is located, and the bottom of the conical or frustum-shaped structure facing the side where the swivel seat 82 is located. This ensures that when the connecting shaft 4 moves towards the fixed seat 3, the non-retractable boss 400 can be easily inserted into the non-retractable groove 303, while when the connecting shaft 4 moves away from the fixed seat 3, the non-retractable boss 400 and the non-retractable groove 303 are difficult to disengage.

[0061] 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, and ensures the clamping force of the clamping piece 2.

[0062] 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.

[0063] 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.

[0064] Therefore, in conjunction 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.

[0065] 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.

[0066] 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.

[0067] In a preferred embodiment, a rotating connecting section 401 is provided on the connecting shaft 4 near the anti-retraction 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] Example 2

[0072] Combined with appendix Figure 1 To be continued Figure 15This embodiment proposes a clamp, including the reusable connection mechanism described in the technical solution of embodiment 1, and also includes a clamping piece 2 and a pin 5. A connecting part 305 is provided on the fixing base 3, and the tail of the clamping piece 2 is connected to the connecting part 305 through the pin 5. A hanging platform 200 is provided at the tail of the clamping piece 2, and a positioning part 101 is provided on the inner wall of the clamping tube 1. The positioning part 101 is used to engage with the hanging platform 200.

[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 a preferred embodiment, the connecting part 305 is a hook, the fixing base 3 is provided with a hook, and the pin 5 passes through the through hole on the clip 2 and is hooked on the hook to realize the assembly of the clip 2.

[0075] 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.

[0076] In this embodiment, a hook 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. In this implementation, the clamp 2 can be detached from the fixing base 3 by deformation or breakage of the hook. 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.

[0077] In actual operation, after the previous clamp 2 and clamp tube 1 are released, the connecting shaft 4 and the fixing seat 3 are simultaneously removed from the human body. Then, medical staff can manually remove the fixing seat 3 connected to the connecting shaft 4 and reload a modular component consisting of clamp tube 1, clamp 2 and fixing seat 3. The reloading process only requires inserting the connecting shaft 4 into the new fixing seat 3 and repeating the reloading steps in embodiment 1.

[0078] After being released, the clamping piece 2 remains clamped by the clamping tube 1. Due to the lever effect, the tail of the clamping piece 2 will tilt upwards. In this embodiment, a hanging platform 200 is provided at the tail of the clamping piece 2, and a positioning part 101 is provided on the inner wall of the clamping tube 1. The positioning part 101 is a stepped structure or a slot. In this embodiment, the tilting of the tail of the clamping piece 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 clamping piece 2 and preventing the clamping piece 2 from detaching from the clamping tube 1 at the distal end.

[0079] 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.

[0080] 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.

[0081] Example 3

[0082] Combined with appendix Figure 16 This embodiment proposes a clamping device, including the clamp described in the technical solution of Embodiment 1, and also includes an operating component and a connecting component.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] The connecting assembly is then removed from the endoscope working channel, and the retaining seat 3 of the previous clamp is removed from the connecting shaft 4. A new module consisting of clamp tube 1, clamp 2 and retaining seat 3 is taken out, and the connecting shaft 4 is connected to the new retaining seat 3 to achieve reloading and subsequent surgical operations.

[0087] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A releasable connection mechanism, characterized in that It includes a clamp tube (1), a fixed base (3), a swivel base (82), an embedded swivel (83), a gathering member (9), and a connecting shaft (4); The clamp tube (1) and the rotating seat (82) are adjacent to each other. The fixed seat (3) is movably disposed inside the clamp tube (1). A padlock boss (103) is provided inside the clamp tube (1). The gathering member (9) is fixed inside the clamp tube (1). The gathering member (9) is located on the side of the padlock boss (103) near the rotating seat (82). The gathering member (9) includes elastic baffles (90). The elastic baffles (90) are evenly distributed in the circumferential direction, and the ends of the elastic baffles (90) all point to the axial center line of the gathering member (9). The embedded rotating ring (83) is movably disposed within the rotating ring seat (82). Elastic hooks (830) are evenly disposed on the embedded rotating ring (83). The ends of the elastic hooks (830) face outward, and the elastic hooks (830) are inclined toward the axial center line of the embedded rotating ring (83). The elastic hook (830) passes through the gathering member (9), and the elastic baffle (90) abuts against the elastic hook (830). The connecting shaft (4) passes through the embedded swivel (83) and is detachably connected to the fixing seat (3). At the same time, the connecting shaft (4) abuts against the elastic hook (830) so that the elastic hook (830) expands outward and abuts against the inner wall of the clamp tube (1) and / or the padlock boss (103).

2. A releasable attachment mechanism according to claim 1, wherein, The width of the elastic baffle (90) gradually decreases from the root to the end.

3. A releasable attachment mechanism according to claim 1, wherein, It also includes a retaining ring (104), which is embedded in the tail of the clamp tube (1) to form the padlock boss (103), and the fastening member (9) is fixed to the inner wall of the retaining ring (104).

4. The reusable connection mechanism according to claim 1, characterized in that, The arrangement density of the elastic baffle (90) is greater than or equal to the arrangement density of the elastic hook (830).

5. A releasable 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 releasable attachment mechanism according to claim 5, 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).

7. A releasable 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 repeatable loadable 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 connecting part (305). The tail of the clip (2) is connected to the connecting part (305) by the pin (5). 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), which is used to engage with the hanging platform (200).

9. A collet according to claim 8, wherein, The fixed base (3) is provided with a plug section (306), and the plug 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 hanging platform (200). A sleeve (6) is sleeved on the outside of the plug section (306), and the sleeve (6) is used to close the opening.

10. A clipping instrument comprising a clip according to claim 8 or 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), and the two ends of the flexible tube (80) are fixedly connected to the handle body (70) and the swivel seat (82) respectively. One end of the mandrel (81) is fixedly connected to the connecting shaft (4), the mandrel (81) passes through the roller (72) and is fixedly connected to the roller (72), while the other end of the mandrel (81) is fixedly connected to the push-pull block (71).

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