Bending forceps type running-firing hemostatic clip capable of turning, rotating and repeatedly opening and closing

Abstract

The invention relates to the technical field of medical instruments, and discloses a pulling forceps type continuous-shooting hemostatic clip capable of turning, rotating and repeatedly opening and closing, the pulling forceps type continuous-shooting hemostatic clip comprises a hemostatic clip assembly and an inner guide assembly which are sequentially connected in an outer tube assembly, the hemostatic clip assembly comprises two hemostatic clips, a hemostatic clip transmission block and a hemostatic clip sleeve, and the front end of each hemostatic clip is provided with a buckling part; the rear ends of the two hemostatic clips are hinged to the front end of a hemostatic clip transmission block, a clamping part is arranged on the rear portion of the hemostatic clip transmission block, the hemostatic clip transmission block penetrates through the hemostatic clip sleeve, and the clamping part is connected with the buckling part of the adjacent hemostatic clip on the rear side in a clamped mode. An opening and closing mechanism for opening or closing the two hemostatic clips is arranged between the two hemostatic clips and the hemostatic clip sleeve; a protruding part is arranged on the outer side of the hemostatic clip sleeve, and a reducing part matched with the protruding part is arranged at the front end of the outer tube assembly. According to the hemostatic clip, tedious operation steps of a doctor can be reduced, operation time is saved, resource waste is reduced, operation efficiency is improved, and operation cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a pliers-type continuous hemostatic clamp which can be bent, rotated and repeatedly opened and closed. Background Art

[0002] Hemostatic clips are medical devices that are mainly used for 1. providing endoscopic markings; 2. being used in surgical ESD, EMR POEM, etc.; 3. fixing the jejunal tube to the small intestinal wall; 4. as an auxiliary treatment option, closing 20mm gastrointestinal tract perforations that are conservatively treated, etc. Hemostatic clips are mainly used in conjunction with endoscopes, usually to control bleeding, and are usually made of metal.

[0003] The main structures of hemostatic clips currently on the market are divided into two forms: 1) Split hemostatic clips, a guide wire body is pre-installed with a split hemostatic clip and equipped with multiple split hemostatic clips. When one of the hemostatic clips is released into the human body, the guide wire needs to be pulled out of the endoscope, loaded with a new split hemostatic clip, and then reinserted into the endoscope. 2) Integrated hemostatic clips, a guide wire body has a pre-installed split hemostatic clip, and no other splits can be replaced. When the hemostatic clip is released into the human body, the guide wire is pulled out of the endoscope and then discarded, replaced with another new hemostatic clip, and reinserted into the endoscope to repeat other operations.

[0004] The existing hemostatic clip structures on the market have the following problems: the split hemostatic clip is inconvenient to operate, the steps of replacing the split hemostatic clip are cumbersome, the operation time is prolonged, there are risks when replacing the clip, the product function needs to be trained for doctors; inserting the clip into the endoscope multiple times during an operation can easily damage the endoscope and waste time and energy. The integrated hemostatic clip can only release one clip when inserted into the endoscope once, and then it is discarded, resulting in a serious waste of resources. The new hemostatic clip needs to be used again, and many useless operations need to be repeated, wasting precious operation time. Summary of the invention

[0005] The present invention provides a pliers-type continuous hemostatic clamp that can be bent, rotated, and repeatedly opened and closed. The hemostatic clamp is easy to assemble and can realize the continuous operation of multiple hemostatic clip assemblies. The hemostatic clip assemblies have high positioning efficiency, which reduces the doctor's cumbersome operating steps, saves operation time, reduces resource waste, improves operation efficiency, and reduces operation costs.

[0006] The above-mentioned object of the invention is achieved through the following technical solutions:

[0007] A pliers-type continuous hemostatic clamp that can be bent, rotated, and repeatedly opened and closed comprises an outer tube assembly and a hemostatic clamp assembly arranged in the outer tube assembly, wherein the hemostatic clamp assembly comprises a plurality of hemostatic clamp assemblies connected end to end in sequence, wherein the outer tube assembly is further provided with an inner guide assembly connected to the tail hemostatic clamp assembly, wherein the hemostatic clamp assembly comprises two symmetrically arranged hemostatic clamps, a hemostatic clamp transmission block, and a hemostatic clamp sleeve, wherein a buckle portion is provided at the front end of the hemostatic clamp, and the rear ends of the two hemostatic clamps are respectively hinged to the front side of the hemostatic clamp transmission block, and the hemostatic clamp transmission block is provided with a buckle portion. A clamping part is provided on the rear side of the block, and the hemostatic clip transmission block passes through the hemostatic clip sleeve and the clamping part extends out of the rear end of the hemostatic clip sleeve, and the clamping part is clamped with the buckle part of the adjacent hemostatic clip assembly on its rear side; an opening and closing mechanism for opening and closing or locking the two hemostatic clips is provided between the two hemostatic clips and the hemostatic clip sleeve, a protrusion is provided on the outside of the hemostatic clip sleeve, and a reduced diameter part is provided at the front end of the outer tube assembly for limiting the hemostatic clip sleeve to realize the opening, closing, locking and rotating actions of the hemostatic clip assembly, and the reduced diameter part is adapted to the protrusion.

[0008] The above-mentioned bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp, wherein the hemostatic clamp includes a hemostatic splint and a hemostatic clamp tail plate fixedly connected thereto, a hemostatic clip fixedly connected to the front end of the hemostatic splint, and the buckle portion includes a bite opening opened in the middle of the hemostatic clip, and the hemostatic clips on both sides of the bite opening are provided with clamping teeth, and the clamping teeth on the two symmetrically arranged hemostatic clips are meshed with each other.

[0009] The above-mentioned pliers-type continuous hemostatic clamp that can be bent, rotated and repeatedly opened and closed, wherein the hemostatic clamp transmission block includes a hemostatic clamp transmission block body and a hemostatic clamp connecting plate, the hemostatic clamp connecting plate includes two front ends that are parallel and fixedly connected to the hemostatic clamp transmission block body, the clamping portion is a clamping groove opened on the rear side of the hemostatic clamp transmission block body, the hemostatic clamp tail plate is provided with a through hole near the end side, the two hemostatic clamp tail plates are stacked and inserted between the two hemostatic clamp connecting plates, a twist shaft is passed through the two hemostatic clamp tail plates, and the twist shaft passes through the through holes on the two hemostatic clamp tail plates in sequence.

[0010] The above-mentioned bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp, wherein the hemostatic clamp sleeve includes a hemostatic clamp sleeve body, the raised portion includes a first baffle ring and a second baffle ring arranged on the rear side of the hemostatic clamp sleeve body, the second baffle ring is close to the rear end of the hemostatic clamp sleeve body, the front sides of the first baffle ring and the second baffle ring are respectively provided with inclined guide surfaces, and the front part of the hemostatic clamp sleeve body is axially provided with a pair of makeshift grooves for the hemostatic clamp tail plate to pass through.

[0011] In the above-mentioned bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp, the outer diameter of the first retaining ring is adapted to the inner diameter of the outer tube assembly, and the outer diameter of the first retaining ring is not less than the outer diameter of the second retaining ring.

[0012] The above-mentioned pliers-type continuous hemostatic clamp that can be bent, rotated, and repeatedly opened and closed, wherein the opening and closing mechanism includes an opening and closing slot hole opened on the tail plate of the hemostatic clamp, the opening and closing slot hole is located on the front side of the through hole, the opening and closing slot hole is L-shaped, and the opening and closing slot hole includes a locking section and a free section with a smooth transition, the locking section is close to one side of the hemostatic clamp, the hemostatic clamp transmission block is embedded in the hemostatic clamp sleeve, and the hemostatic clamp tail plates are respectively embedded in the corresponding give-way grooves, and a pin is penetrated on the front side of the hemostatic clamp sleeve body, and the pin passes through the free sections of the opening and closing slot holes on the two hemostatic clamp tail plates in sequence.

[0013] The above-mentioned bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp, wherein the outer tube assembly includes an outer tube head and a first flexible tube, the reduced diameter portion is located at the front end of the outer tube head, the reduced diameter portion is in the form of a reduced diameter frustum ring extending forward, the reduced diameter portion includes an outer conical surface and an inner conical surface, the front ends of the outer conical surface and the inner conical surface form an annular front end surface; the reduced diameter portion is provided with a plurality of strip-shaped notches along the circumferential direction, the notches extend backward to the outer tube head, an inner boss is provided on the inner side of the rear portion of the outer tube head, and an outer step is provided at the front end of the first flexible tube that is tightly matched with the inner boss.

[0014] In the above-mentioned bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp, the inner side of the rear end of the first flexible tube is tightly fitted and connected to the second flexible tube.

[0015] The above-mentioned bending, rotating and repeatedly opening and closing pull-type continuous hemostatic clamp, wherein the release clamp assembly comprises two symmetrically arranged release clamps, a release clamp transmission block and a release clamp sleeve;

[0016] The release clip comprises a release clamp plate and a release clamp tail plate fixedly connected thereto, a release clamp sheet is provided at the front end of the release clip, a clamping notch is provided in the center of the release clamp sheet for clamping with the clamping part of the tail hemostatic clamp assembly, an opening and closing slide groove is provided on the side of the release clamp tail plate close to the release clamp plate, and a through hole is provided on the side of the release clamp tail plate away from the release clamp plate;

[0017] The release clamp transmission block comprises a release clamp transmission block body and a mounting plate, wherein the mounting plate comprises two and parallel fixedly connected to the front end of the release clamp transmission block body, a card slot is arranged at the rear of the release clamp transmission block body, two release clamp tail plates are stacked and inserted between the two mounting plates, a rotating shaft is arranged between the two mounting plates, and the rotating shaft is arranged through the through holes on the two release clamp tail plates in sequence;

[0018] The release clamp sleeve tube comprises a release clamp sleeve tube body, the outer rear part of the release clamp sleeve tube body is provided with a convex ring adapted to the inner wall of the outer tube assembly, the front side of the convex ring is provided with an inclined guide surface, the front part of the release clamp sleeve tube body is axially provided with a pair of clamp grooves for the release clamp tail plate to pass through, the release clamp transmission block passes through the release clamp sleeve tube and the clamp groove extends out of the rear end of the release clamp sleeve tube, the two release clamp tail plates are respectively embedded in the corresponding clamp grooves, the clamp grooves are clamped with the guide grooves, the front side of the release clamp sleeve tube body passes through a fixed connecting rod, and the connecting rod passes through the opening and closing sliding grooves on the two release clamp tail plates in sequence.

[0019] The above-mentioned bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp, wherein the inner guide assembly includes an inner guide head, a flexible inner catheter and an inner guide wire, the front end of the inner guide head is provided with a guide groove plugged into the card slot, the rear end of the inner guide head is provided with a mounting hole, the inner guide wire is embedded in the flexible inner catheter, and the front ends of the flexible inner catheter and the inner guide wire are tightly fitted and embedded in the mounting hole.

[0020] In summary, the beneficial technical effects of the present invention are:

[0021] The present invention can pre-install multiple hemostatic clip assemblies in the outer tube assembly by means of head-to-tail biting, and the inner guide assembly is bitten with the hemostatic clip assembly at the tail. After the outer tube assembly is inserted into the endoscope, the pre-installed multiple hemostatic clip assemblies can be released into the patient's body in sequence according to the number of hemostatic clips required for the operation by pushing, pulling and rotating the inner guide assembly. The hemostatic clip assembly has high positioning efficiency, thereby reducing the doctor's tedious operating steps, saving operation time, reducing resource waste, improving operation efficiency, and reducing operation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the present invention without the outer tube assembly;

[0024] Figure 3 It is a structural schematic diagram of the hemostatic clip assembly of the present invention;

[0025] Figure 4 It is a schematic diagram of the exploded structure of the hemostatic clip assembly of the present invention;

[0026] Figure 5 It is a schematic diagram of the exploded structure of the outer tube assembly of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the outer pipe head of the present invention;

[0028] Figure 7 is a schematic structural diagram of a release clip assembly of the present invention;

[0029] Figure 8 is a schematic diagram of the exploded structure of the release clip assembly of the present invention;

[0030] Fig. 9 It is a schematic structural diagram of the inner guide assembly of the present invention;

[0031] Fig.10 is a cross-sectional view of the inner guide assembly of the present invention;

[0032] Fig.11 is a cross-sectional view of the hemostatic clip of the present invention when it is retracted;

[0033] Fig.12 This is a diagram of the use state of the hemostatic clip of the present invention when it is opened;

[0034] Fig.13 This is a diagram of the use state of the hemostatic clip of the present invention when it is locked;

[0035] Fig.14 This is a diagram of the use state of the hemostatic clip assembly of the present invention after being locked and released;

[0036] Fig.15 This is a diagram showing the use state of the tail hemostatic clip assembly after the hemostatic clip assembly of the present invention is locked and released;

[0037] Fig.16 This is a diagram showing the use state of the tail hemostatic clip assembly of the present invention being retracted into the outer tube assembly;

[0038] Fig.17 is a schematic diagram of the structure of the present invention using a release clamp assembly and excluding an outer tube assembly;

[0039] Fig.18 This is a diagram of the use state of the hemostatic clip being opened when the release clip assembly of the present invention is used;

[0040] Fig.19 This is a diagram of the use state of the hemostatic clip when the release clip assembly of the present invention is used and locked;

[0041] Fig. 20 This is a diagram showing the use state of the hemostatic clip assembly after being locked and released when the release clip assembly is used in the present invention;

[0042] Fig.21 is a diagram of the use state of the release clamp assembly when the release clamp assembly is used in the present invention;

[0043] Fig. 22 This is a diagram of the use state of the release clamp assembly when the release clamp assembly is used in the present invention and is retracted into the outer tube assembly.

[0044] As shown in the figure, 1. outer tube assembly; 11. outer tube head; 111. reduced diameter portion; 1111. outer cone surface; 1112. inner cone surface; 1113. front end surface; 112. notch; 113. inner boss; 12. first flexible tube; 121. outer step; 2. hemostatic clip assembly; 21. hemostatic clip; 211. hemostatic splint; 212. hemostatic clip tail plate; 2121. through hole; 213. hemostatic clip piece; 21 31. Engagement mouth; 2132. Clamping teeth; 22. Hemostatic clip transmission block; 221. Hemostatic clip transmission block body; 2211. Engagement groove; 222. Hemostatic clip connecting plate; 2221. Twisting shaft hole; 2222. Twisting shaft; 23. Hemostatic clip sleeve; 231. Hemostatic clip sleeve body; 2311. First retaining ring; 2312. Second retaining ring; 2313. Displacement groove; 2314. Pin shaft hole; 3. Inner guide group Components; 31, inner guide head; 311, guide groove; 312, mounting hole; 32, inner guide tube; 33, inner guide wire; 4, opening and closing mechanism; 41, opening and closing slot hole; 411, locking section; 412, free section; 42, pin shaft; 5, release clamp assembly; 51, release clamp; 511, release clamp plate; 512, release clamp tail plate; 5121, opening and closing slide groove; 5122, through hole; 513, release clamp; 5131, bayonet; 52, release clamp transmission block; 521, release clamp transmission block body; 5211, slot; 522, mounting plate; 5221, shaft hole; 5222, shaft; 53, release clamp sleeve; 531, release clamp sleeve body; 5311, convex ring; 5312, slot; 5313, connecting rod hole; 5314, connecting rod; 6, limiting protrusion; 7, second flexible tube; 8, soft rubber layer. DETAILED DESCRIPTION

[0045] The following is combined with Figure 1-22 The present invention is described in further detail.

[0046] like Figure 1 , 2 As shown, a pliers-type continuous hemostatic clamp that can be bent, rotated, and repeatedly opened and closed includes an outer tube component 1 and a hemostatic clip component 2 arranged in the outer tube component 1. The hemostatic clip component 2 includes a plurality of components that are connected end to end in sequence. The outer tube component 1 is also provided with an inner guide component 3 that is connected to the tail of the hemostatic clip component 2.

[0047] like Figure 3 , 4As shown, the hemostatic clip assembly 2 includes two symmetrically arranged hemostatic clips 21, a hemostatic clip transmission block 22 and a hemostatic clip sleeve 23, a front end of the hemostatic clip 21 is provided with a snap-fit ​​portion, the rear ends of the two hemostatic clips 21 are respectively hinged to the front side of the hemostatic clip transmission block 22, a clamping portion is provided on the rear side of the hemostatic clip transmission block 22, the hemostatic clip transmission block 22 passes through the hemostatic clip sleeve 23 and the clamping portion extends out of the rear end of the hemostatic clip sleeve 23, and the clamping portion is clamped with the snap-fit ​​portion of the adjacent hemostatic clip assembly 2 on its rear side; an opening and closing mechanism 4 for opening, closing or locking the two hemostatic clips 21 is provided between the two hemostatic clips 21 and the hemostatic clip sleeve 23, a protrusion is provided on the outer side of the hemostatic clip sleeve 23, and a reduced diameter portion 111 is provided at the front end of the outer tube assembly 1 for limiting the hemostatic clip sleeve 23 to realize the opening, closing, locking and rotating actions of the hemostatic clip assembly 2, and the reduced diameter portion 111 is adapted to the protrusion.

[0048] like Figure 3 , 4 As shown, the hemostatic clip 21 of this embodiment includes a hemostatic splint 211 and a hemostatic clip tail plate 212 fixed thereto, a hemostatic clip 213 fixed to the front end of the hemostatic splint 211, the hemostatic clip 213 is perpendicular to the hemostatic clip 21, and the buckle portion includes a bite opening 2131 opened in the middle of the hemostatic clip 213, the bite opening 2131 is U-shaped, and the hemostatic clips 213 on both sides of the bite opening 2131 are provided with clamping teeth 2132, and the clamping teeth 2132 on the two symmetrically arranged hemostatic clips 21 are meshed with each other, and the mutually meshing clamping teeth 2132 can prevent falling off when clamping tissue.

[0049] like Figure 3 , 4 As shown, the hemostatic clip transmission block 22 of this embodiment includes a hemostatic clip transmission block body 221 and a hemostatic clip connecting plate 222. The hemostatic clip connecting plate 222 includes two and parallel fixed front ends of the hemostatic clip transmission block body 221. The clamping portion is a clamping groove 2211 opened on the rear side of the hemostatic clip transmission block body 221. The hemostatic clip tail plate 212 is provided with a through hole 2121 near the end side. The two hemostatic clip tail plates 212 are stacked and inserted between the two hemostatic clip connecting plates 222. A twisting shaft 2222 is passed through the two hemostatic clip connecting plates 222. The twisting shaft 2222 passes through the through holes 2121 on the two hemostatic clip tail plates 212 in sequence. The two hemostatic clips 21 can rotate on the twisting shaft 2222 to realize the opening and closing action of the two hemostatic clips 21.

[0050] like Figure 2 As shown, when the two symmetrically arranged hemostatic clips 21 are matched, the two bite openings 2131 are matched to form a rectangular opening, the cross-section of the snap-in groove 2211 is square, and the two bite openings 2131 are engaged with the snap-in groove 2211 of the front hemostatic clip assembly 2, forming a plurality of hemostatic clip assemblies 2 that are snap-connected end to end.

[0051] The thickness of the hemostatic clip 213 is smaller than the width of the engaging groove 2211 , so that a gap is left between the engaging opening 2131 of the hemostatic clip 211 and the engaging groove 2211 , ensuring that two adjacent hemostatic clip assemblies 2 can bend with the outer tube assembly 1 .

[0052] like Figure 3 , 4 As shown, the hemostatic clip sleeve 23 of this embodiment includes a cylindrical hemostatic clip sleeve body 231, and the raised portion includes a first baffle ring 2311 and a second baffle ring 2312 arranged on the rear side of the hemostatic clip sleeve body 231, the first baffle ring 2311 and the second baffle ring 2312 are arranged at an interval, the second baffle ring 2312 is close to the rear end of the hemostatic clip sleeve body 231, and the front sides of the first baffle ring 2311 and the second baffle ring 2312 are respectively provided with inclined guiding surfaces, and the front part of the hemostatic clip sleeve body 231 is axially provided with a pair of make way grooves 2313 for the hemostatic clip tail plate 212 to pass through.

[0053] like Figure 3 , 4 As shown, the opening and closing mechanism 4 of this embodiment includes an opening and closing slot 41 formed on the hemostatic clamp tail plate 212, the opening and closing slot 41 is located on the front side of the through hole 2121, the opening and closing slot 41 is L-shaped, and the opening and closing slot 41 includes a locking section 411 and a free section 412 with a smooth transition, the locking section 411 is close to one side of the hemostatic clamp 211, the hemostatic clamp transmission block 22 passes through the hemostatic clamp sleeve 23 and the locking groove 2211 extends out of the rear end of the hemostatic clamp sleeve 23, the two hemostatic clamp tail plates 212 are embedded in the corresponding yield grooves 2313, and a pin shaft 42 is penetrated on the front side of the hemostatic clamp sleeve body 231, and the pin shaft 42 passes through the free sections 412 of the two opening and closing slots 41 in sequence.

[0054] The engagement openings 2131 on the two hemostatic splints 211 engage with the engagement grooves 2211 of the front hemostatic clip assembly 2 , and can transmit thrust, pulling and rotational forces forward, thereby realizing the opening and closing, locking, forward and backward movement and rotation of the hemostatic splints 211 .

[0055] like Fig.12 As shown, when the inner guide assembly 3 is pushed and pulled forward and backward, if the pin 42 moves in the free section 412 of the opening and closing slot 41, the two hemostatic clips 21 can be repeatedly opened and closed;

[0056] like Fig.13 As shown, if the pin shaft 42 moves to the locking section 411 of the opening and closing slot 41, the two hemostatic clips 21 are in a locked state.

[0057] like Figure 5 , 6As shown, the outer tube assembly 1 includes an outer tube head 11 and a first flexible tube 12, the reduced diameter portion 111 is located at the front end of the outer tube head 11, the reduced diameter portion 111 is a reduced diameter frustum ring extending forward, the reduced diameter portion 111 includes an outer conical surface 1111 and an inner conical surface 1112, and the front ends of the outer conical surface 1111 and the inner conical surface 1112 form an annular front end surface 1113; the reduced diameter portion 111 is provided with a plurality of strip-shaped notches 112 along the circumferential direction, the notches 112 extend backward to the outer tube head 11, an inner boss 113 is provided on the inner side of the rear portion of the outer tube head 11, and an outer step 121 tightly matched with the inner boss 113 is provided at the front end of the first flexible tube 12.

[0058] The outer tube head 11 and the reduced diameter portion 111 of this embodiment are integrally formed and made of medical stainless steel. The outer tube head 11 is cylindrical, and the conical surface structure of the reduced diameter portion 111 facilitates the entry of the endoscope and serves as a control structure to achieve various actions of the hemostatic clip assembly 2.

[0059] The outer diameter of the first retaining ring 2311 of this embodiment is adapted to the inner diameter of the outer tube assembly 1, and the outer diameter of the first retaining ring 2311 is not less than the outer diameter of the second retaining ring 2312. Through the above design, after the hemostatic clip 21 clamps the tissue to achieve locking, when the inner guide assembly 3 is pushed forward again, the thrust of the second retaining ring 2312 of the protruding portion to push out of the outer tube head 11 is less than the unlocking thrust of the clamped tissue state of the locked hemostatic clip 21, thereby achieving the release of the locked hemostatic clip 21.

[0060] The outer diameter and inner diameter of the outer tube head 11 are respectively the same as the outer diameter and inner diameter of the first flexible tube 12 , ensuring that the hemostatic clip assembly 2 can move stably and smoothly in the inner cavity of the outer tube assembly 1 .

[0061] The first flexible tube 12 of this embodiment is a spiral flat wire spring tube, the inner wall of which is relatively flat and has a plurality of gaps, which can achieve a certain angle of bending, so that the hemostatic clip assembly 2 can move back and forth more easily inside it, and the first flexible tube 12 can be deformed according to the shape of an object and return to its original state after passing through. The first flexible tube 12 can also be made of other flexible materials.

[0062] like Figure 1 , 2 As shown, in another embodiment, the inner side of the rear end of the first flexible tube 12 is tightly fitted and connected to the second flexible tube 7 .

[0063] The second flexible tube 7 of this embodiment adopts a spiral round wire spring tube. Since the outer surface of the round wire spring tube is continuously concave and convex, a soft rubber layer 8 is coated on the outer side of the round wire spring tube. The provision of the soft rubber layer can effectively increase its tensile strength and reduce the friction coefficient, thereby reducing the friction damage to the inner wall of the endoscope channel tube.

[0064] like Fig. 9 , 10As shown, the inner guide assembly 3 includes an inner guide head 31, a flexible inner catheter 32 and an inner guide wire 33. The front end of the inner guide head 31 is provided with a guide groove 311 which is engaged with the engagement groove 2211 of the tail hemostatic clip assembly 2, and the rear end of the inner guide head 31 is provided with a mounting hole 312. The inner guide wire 33 is embedded in the flexible inner catheter 32. The front ends of the flexible inner catheter 32 and the inner guide wire 33 are tightly fitted and embedded in the mounting hole 312.

[0065] The outer diameter of the flexible inner conduit 32 is adapted to the inner diameter of the second flexible tube 7 , ensuring that the inner guide assembly 3 can be pushed stably and smoothly in the second flexible tube 7 .

[0066] The flexible inner conduit 32 improves the structural strength of the inner guide assembly 3 without affecting its bending ability, and can prevent the inner guide assembly 3 from bending due to thrust in the first flexible tube 12 .

[0067] When the hemostatic clip assembly 2 is assembled, the engagement groove 2211 of the front hemostatic clip assembly 2 is engaged with the engagement opening 2131 of the adjacent rear hemostatic clip 21, and the two engagement openings 2131 form a closed rectangular opening when the hemostatic clip 21 is closed, so that the two adjacent hemostatic clip assemblies 2 do not disengage when the hemostatic clip 21 is closed.

[0068] like Figure 7 , 8 As shown in Figures 17 and 17 , in another embodiment, a release clip assembly 5 is connected between the tail hemostatic clip assembly 2 and the inner guide assembly 3 , and the release clip assembly 5 includes two symmetrically arranged release clips 51 , a release clip transmission block 52 , and a release clip sleeve 53 .

[0069] The release clamp 51 includes a release clamp plate 511 and a release clamp tail plate 512 fixedly connected thereto, a release clip 513 is provided at the front end of the release clamp 51, the release clip 513 is perpendicular to the release clamp plate 511, a snap-in notch 5131 is provided in the center of the release clip 513 for snapping into the snap-in groove 2211 of the tail hemostatic clamp assembly 2, a strip-shaped opening and closing groove 5121 is provided on the side of the release clamp tail plate 512 close to the release clamp plate 511, and a through hole 5122 is provided on the side of the release clamp tail plate 512 away from the release clamp plate 511.

[0070] The release clamp transmission block 52 includes a release clamp transmission block body 521 and a mounting plate 522. The mounting plate 522 includes two front ends that are parallel and fixedly connected to the release clamp transmission block body 521. A card slot 5211 is provided at the rear of the release clamp transmission block body 521. Two release clamp tail plates 512 are stacked and inserted between the two mounting plates 522. A rotating shaft 5222 is passed through the two mounting plates 522. The rotating shaft 5222 passes through the through holes 5122 on the two release clamp tail plates 512 in sequence.

[0071] The release clamp tube 53 includes a release clamp tube body 531, and a convex ring 5311 adapted to the inner wall of the outer tube assembly 1 is provided at the outer rear part of the release clamp tube body 531, and an inclined guide surface is provided on the front side of the convex ring 5311. A pair of clamp grooves 5312 for the release clamp tail plate 512 to pass through are axially provided at the front part of the release clamp tube body 531. The release clamp transmission block 52 passes through the release clamp tube 53 and the clamping groove 5211 extends out of the rear end of the release clamp tube 53. The clamping groove 5211 is clamped with the guide groove 311, and the two release clamp tail plates 512 are respectively embedded in the corresponding clamping grooves 5312. A penetrating connecting rod 5314 is provided on the front side of the release clamp tube body 531. The connecting rod 5314 is perpendicular to the axis of the release clamp tube 53, and the connecting rod 5314 is sequentially penetrated through the opening and closing sliding grooves 5121 on the two release clamp tail plates 512.

[0072] The cross-section of the slot 5211 of this embodiment is the same size and shape as the cross-section of the engaging slot 2211, both of which are square; the thickness of the release clip 513 is less than the thickness of the engaging slot 2211, so that a gap is left between the bayonet 5131 of the release clip 51 and the engaging slot 2211 of the tail hemostatic clip assembly 2, which facilitates the tail hemostatic clip assembly 2 and the release clip assembly 5 to make turns.

[0073] The reduced diameter portion 111 and the outer tube head 11 are provided with a plurality of notches 112. When the inner guide assembly 3 is pushed forward, the hemostatic clip assembly 2 moves toward the front end, and the inner conical surface 1112 of the reduced diameter portion 111 contacts the guide surface on the front side of the first retaining ring 2311 of the raised portion, so that the reduced diameter portion 111 and the outer tube head 11 expand outward, so that the first retaining ring 2311 passes smoothly through the reduced diameter portion 111. At this time, the reduced diameter portion 111 is stuck between the first retaining ring 2311 and the second retaining ring 2312. When the hemostatic clip 21 is required to be in a hemostatic state, the inner guide assembly 3 is pulled backward. After the hemostatic clip 21 is subjected to a large pulling force from the hemostatic clip transmission block 22, the two hemostatic clips 21 are pulled backward, and the pin shaft 42 moves from the free section 412 of the opening and closing slot hole 41 to the locking section 411 of the opening and closing slot hole 41. At this time, the hemostatic clip 21 The inner guide assembly 3 is in a locked state; the inner guide assembly 3 is then pushed forward again, and the guiding surface on the front side of the second retaining ring 2312 cooperates with the inner conical surface 1112 of the reduced diameter portion 111 until the second retaining ring 2312 expands the outer tube head 11 outward, and the second retaining ring 2312 is pushed out of the reduced diameter portion 111, and finally the hemostatic clip assembly 2 is completely extended out of the outer tube head 11; the inner guide assembly 3 is continued to be pushed so that the hemostatic clip 21 on its rear side extends out of the outer tube head 11 and opens, thereby completely releasing the hemostatic clip assembly 2 on its front side, and the inner guide assembly 3 is continued to be pushed again, so that the first retaining ring 2311 on the hemostatic clip assembly 2 can be pushed out of the outer tube head 11, so that the reduced diameter portion 111 is stuck between the first retaining ring 2311 and the second retaining ring 2312, and at this time, the opening, closing and rotation of the hemostatic clip 21 can be achieved by pushing, pulling and rotating the inner guide assembly 3.

[0074] Under the push of the inner guide component 3, the hemostatic clip component 2 can be extended out of the outer tube head 11 of the outer tube component 1 in sequence. The hemostatic clip component 2 extended out of the outer tube head 11 can make a 360° rotation along the front end of the outer tube head 11 under the action of the inner guide component 3, and realize the opening or closing of the hemostatic clip 21.

[0075] When the inner guide assembly 3 is pushed forward, the guiding surface on the front side of the first baffle ring 2311 on the hemostatic clip sleeve body 231, the guiding surface on the front side of the second baffle ring 2312 and the guiding surface on the front side of the convex ring 5311 on the release clip sleeve body 531 are respectively subjected to the resistance of the inner conical surface 1112 of the reduced diameter portion 111, and then the hemostatic clip 21 and the release clip 51 will both open.

[0076] When the reduced diameter portion 111 is located between the first retaining ring 2311 and the second retaining ring 2312 of the hemostatic clip sleeve body 231, the inner guide assembly 3 is moved forward and backward or rotated to repeatedly open, close, lock and freely rotate the hemostatic clip 21.

[0077] like Figure 2 As shown, in one embodiment, the outer front end of the hemostatic clip 21 and the outer front end of the release clip 51 are both provided with a limiting protrusion 6 , and the limiting protrusion 6 abuts against the inner wall of the outer tube assembly 1 .

[0078] Specifically, a spherical crown-shaped limiting protrusion 6 is provided on the outer front end of the hemostatic splint 211 and the outer front end of the release splint 511; the limiting protrusion 6 is constrained by the first flexible tube 12, which can prevent the bite opening 2131 of the hemostatic clip 21 and the bayonet 5131 of the release clip 51 from opening in the first flexible tube 12, thereby ensuring that the thrust, tension and torque of the inner guide component 3 can be transmitted to the head hemostatic clip component 2 in sequence.

[0079] like Figure 3 , 4 As shown, the assembly process of the hemostatic clip assembly 2 is as follows: first, the two hemostatic clip tail plates 212 are stacked between the two hemostatic clip connecting plates 222, the two hemostatic clip connecting plates 222 are provided with coaxial twist shaft holes 2221, the through holes 2121 on the two hemostatic clip tail plates 212 and the twist shaft holes 2221 on the two hemostatic clip connecting plates 222 are aligned, the twist shaft 2222 passes through the two twist shaft holes 2221 and is fastened to the hemostatic clip connecting plates 222; then, the hemostatic clip transmission block 22 is inserted from the front end of the hemostatic clip sleeve 23, the hemostatic clip tail plate 212 is placed in the yield groove 2313, the hemostatic clip sleeve body 231 is provided with a pin shaft hole 2314, the pin shaft hole 2314 is aligned with the free sections 412 of the two opening and closing slots 41, the pin shaft 42 is inserted through the pin shaft hole 2314 and fastened.

[0080] like Figure 7 , 8As shown, the assembly process of the release clamp assembly 5 is as follows: first, the two release clamp tail plates 512 are stacked between the two mounting plates 522, the two mounting plates 522 are provided with coaxial shaft holes 5221, the through holes 5122 on the two release clamp tail plates 512 are aligned with the shaft holes 5221 on the two mounting plates 522, the shaft 5222 passes through the shaft hole 5221 and is fastened to the mounting plates 522; then, the release clamp transmission block 52 is inserted from the front end of the release clamp sleeve tube 53, the release clamp tail plate 512 is placed in the clamp groove 5312, the release clamp sleeve tube body 531 is provided with a coaxial connecting rod hole 5313, the opening and closing sliding grooves 5121 on the two release clamp tail plates 512 are aligned with the connecting rod hole 5313, and the connecting rod 5314 passes through the two connecting rod holes 5313 and is fastened to the release clamp sleeve tube body 531.

[0081] In the first flexible tube 12, the bayonet 5131 of the release clip assembly 5 will bite the engagement groove 2211 on the hemostatic clip transmission block 22 of the hemostatic clip assembly 2 in front thereof, leaving a gap at the engagement position to facilitate turning.

[0082] All the hemostatic clips 21 in the outer tube assembly 1 are in a closed but not locked state, and the release clips 51 are in a closed state, and no elastic deformation occurs. No matter how long they are stored, it will not affect the size of the opening angles of the hemostatic clips 21 and the release clips 51 during use.

[0083] When using the hemostatic clip, first extend the hemostatic clip into the vicinity of the mucosal tissue or blood vessels of the human body that need hemostasis, and slowly push the hemostatic clip assembly 2 out of the outer tube head 11 so that the reduced diameter portion 111 is between the first baffle ring 2311 and the second baffle ring 2312 of the raised portion. At this time, the hemostatic clip 21 is in an open state. When the clamping position of the hemostatic clip 21 on the tissue wound or blood vessel is not ideal, the hemostatic clip 21 is driven to adjust to the ideal clamping position by pushing, pulling and rotating the inner guide assembly 3, and then the clamping and locking action is performed, thereby ensuring the hemostatic effect.

[0084] like Figure 11-14 As shown, the operation process of the hemostatic clip assembly 2 is:

[0085] Step 1: Push the inner guide assembly 3 forward and slowly push the frontmost hemostatic clip assembly 2 out of the outer tube head 11. When the reduced diameter portion 111 presses against the outer side of the hemostatic clip tail plate 212, the two hemostatic clips 21 will open at a small angle.

[0086] Step 2: Continue to push the inner guide assembly 3 forward, the inner conical surface 1112 of the reduced diameter portion 111 will block the guide surface of the first retaining ring 2311, and the two hemostatic clips 21 will open to the maximum angle.

[0087] Step 3: Since a plurality of notches 112 are provided on the reduced diameter portion 111 and the outer tube head 11, the front ends of the reduced diameter portion 111 and the outer tube head 11 can be stretched open, and the inner guide assembly 3 is continuously pushed forward, so that the first retaining ring 2311 of the raised portion can be pushed to the front side of the front end surface 1113 of the reduced diameter portion 111. At this time, the inner guide assembly 3 can be freely rotated, driving the frontmost hemostatic clip assembly 2 to rotate freely, so as to find a suitable angle.

[0088] Step 4: Pulling the inner guide assembly 3 backward will drive the hemostatic clip assembly 2 to move backward, and the front end surface 1113 of the reduced diameter portion 111 will block the rear end surface of the first retaining ring 2311 of the hemostatic clip sleeve body 231, so that the two hemostatic clips 21 are closed for pre-locking. Pay attention to controlling the force of pulling the inner guide assembly 3 backward, and do not pull the inner guide assembly 3 backward to the locked state without determining the locking position.

[0089] Step 5: When the two hemostatic clips 21 are in a closed but not locked state, push the inner guide assembly 3 forward, and the inner conical surface 1112 of the reduced diameter portion 111 will block the guide surface of the second retaining ring 2312. At this time, the two hemostatic clips 21 will open to the maximum angle. Control the force of pushing the inner guide assembly 3, and do not push the second retaining ring 2312 of the raised portion out of the outer tube head 11. At this time, the inner guide assembly 3 can be rotated freely, driving the frontmost hemostatic clip assembly 2 to rotate freely and find a suitable angle.

[0090] Repeating steps 3 to 5 can realize repeated opening and closing and free rotation of the hemostatic clip assembly 2. At this time, the pin 42 of the hemostatic clip assembly 2 moves back and forth in the free section 412 of the opening and closing slot 41 of the hemostatic clip tail plate 212.

[0091] Step 6: Repeat step 4.

[0092] Step 7: After determining the position of the hemostatic clip 21, continue to pull the inner guide assembly 3 backward to drive the hemostatic clip transmission block 22 to move backward, so that the pin shaft 42 of the opening and closing mechanism 4 enters the locking section 411 of the opening and closing slot 41, locks the two hemostatic clips 21, and performs a locking operation on the soft tissue.

[0093] Step 8: Push the inner guide assembly 3 forward to drive the hemostatic clip assembly 2 to move forward. The inner conical surface 1112 of the reduced diameter portion 111 will block the front side of the guide surface of the second retaining ring 2312 of the raised portion. At this time, the force that pushes the second retaining ring 2312 out of the outer tube head 11 is significantly smaller than the thrust that unlocks the two hemostatic clips 21.

[0094] Step 9: Continue to push the inner guide assembly 3 forward to push the second retaining ring 2312 of the protrusion out of the outer tube head 11. At this time, the hemostatic clip assembly 2 on the rear side will be slowly pushed out from the outer tube head 11. When the reduced diameter portion 111 of the outer tube head 11 presses against the outer side of the hemostatic clip tail plate 212 behind it, the two hemostatic clips 21 will open at a small angle to completely release the previous hemostatic clip assembly 2.

[0095] The following multiple hemostatic clip assemblies 2 can be operated repeatedly according to the above steps.

[0096] like Fig.15 , 16 As shown, when the hemostatic clip assembly 2 at the tail end of the outer tube assembly 1 releases the hemostatic clip assembly 2 before it, the hemostatic clip assembly 2 at the tail end does not perform the operation of clamping tissue, and pulls back the inner guide assembly 3 to pull the hemostatic clip assembly 2 at the tail end back into the outer tube head 11 and is pulled out of the endoscope along with the remaining components.

[0097] like Fig.17 It is a schematic structural diagram of the hemostatic clip assembly 2 excluding the outer tube assembly 1 and the inner guide assembly 3 when they are connected via the release clip assembly 5 .

[0098] like Figure 17-20 Shown is the operation process of the hemostatic clip with the release clip assembly 5:

[0099] Step 1: After the last hemostatic clip assembly 2 in the outer tube assembly 1 completes the locking action, continue to push the inner guide assembly 3 forward to push the release clip assembly 5 out of the outer tube head 11. When the inner conical surface 1112 of the reduced diameter portion 111 presses onto the outer side surface of the release clip tail plate 512, the two release clips 51 will open at a small angle to release the last hemostatic clip assembly 2.

[0100] Step 2: If the last hemostatic clip assembly 2 is not released in the previous step, continue to push the inner guide assembly 3 forward, the inner conical surface 1112 of the reduced diameter portion 111 will block the guide surface of the convex ring 5311 of the release clip sleeve body 531, and the two release clips 51 will open to the maximum angle to release the last hemostatic clip assembly 2. Control the force of pushing the inner guide assembly 3 forward and do not push the release clip sleeve 53 out of the outer tube head 11.

[0101] Step 3: Pulling the inner guide assembly 3 backward will drive the release clamp assembly 5 to move backward, and the reduced diameter portion 111 will gradually reduce the opening angle of the two release clamps 51 .

[0102] Step 4: Continue to pull the inner guide assembly 3 backwards, which will drive the release clamp assembly 5 to be completely pulled into the outer pipe head 11.

[0103] At this point, the locking and releasing actions of the entire set of hemostatic clips are completed, and the remaining components are pulled out of the endoscope.

[0104] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pliers-type continuous hemostatic clip that can be bent, rotated, and repeatedly opened and closed, comprising an outer tube assembly and a hemostatic clip assembly disposed in the outer tube assembly, characterized in that: The hemostatic clip assembly comprises a plurality of parts which are connected end to end in sequence, the outer tube assembly also comprises an inner guide assembly connected to the tail hemostatic clip assembly, the hemostatic clip assembly comprises two symmetrically arranged hemostatic clips, a hemostatic clip transmission block and a hemostatic clip sleeve, the front end of the hemostatic clip is provided with a snapping portion, the rear ends of the two hemostatic clips are respectively hinged to the front side of the hemostatic clip transmission block, the rear side of the hemostatic clip transmission block is provided with a snapping portion, the hemostatic clip transmission block passes through the hemostatic clip sleeve and the snapping portion extends out of the rear end of the hemostatic clip sleeve, the snapping portion is snapped with the snapping portion of the adjacent hemostatic clip assembly on its rear side; an opening and closing mechanism for opening and closing or locking the two hemostatic clips is provided between the two hemostatic clips and the hemostatic clip sleeve, a protruding portion is provided on the outside of the hemostatic clip sleeve, and a reduced diameter portion is provided at the front end of the outer tube assembly for limiting the hemostatic clip sleeve to realize the opening, closing, locking and rotating actions of the hemostatic clip assembly, and the reduced diameter portion is adapted to the protruding portion.

2. The bendable, rotatable and repeatedly openable and closed pull-type continuous hemostatic clamp according to claim 1, characterized in that: The hemostatic clip comprises a hemostatic splint and a hemostatic clip tail plate fixed thereto, a hemostatic clip piece fixed to the front end of the hemostatic splint, the buckle portion comprises a bite opening opened in the middle of the hemostatic clip piece, the hemostatic clip pieces on both sides of the bite opening are provided with clamping teeth, and the clamping teeth on the two symmetrically arranged hemostatic clips are meshed with each other.

3. The bendable, rotatable and repeatedly openable and closed pull-type continuous hemostatic clamp according to claim 2, characterized in that: The hemostatic clamp transmission block includes a hemostatic clamp transmission block body and a hemostatic clamp connecting plate, the hemostatic clamp connecting plate includes two and parallel fixedly connected to the front end of the hemostatic clamp transmission block body, the clamping portion is a clamping groove opened on the rear side of the hemostatic clamp transmission block body, the hemostatic clamp tail plate is provided with a through hole near the end side, the two hemostatic clamp tail plates are stacked and inserted between the two hemostatic clamp connecting plates, a twist shaft is passed through the two hemostatic clamp connecting plates, and the twist shaft passes through the through holes on the two hemostatic clamp tail plates in sequence.

4. The bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp according to claim 2, characterized in that: The hemostatic clip sleeve comprises a hemostatic clip sleeve body, the raised portion comprises a first baffle ring and a second baffle ring arranged on the rear side of the hemostatic clip sleeve body, the second baffle ring is close to the rear end of the hemostatic clip sleeve body, the front sides of the first baffle ring and the second baffle ring are respectively provided with inclined guide surfaces, and the front part of the hemostatic clip sleeve body is axially provided with a pair of clearance grooves for the hemostatic clip tail plate to pass through.

5. The bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp according to claim 4, characterized in that: The outer diameter of the first retaining ring is matched with the inner diameter of the outer tube assembly, and the outer diameter of the first retaining ring is not less than the outer diameter of the second retaining ring.

6. The bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp according to claim 3, characterized in that: The opening and closing mechanism includes an opening and closing slot hole formed on the tail plate of the hemostatic clamp, the opening and closing slot hole is located on the front side of the through hole, the opening and closing slot hole is L-shaped, and the opening and closing slot hole includes a locking section and a free section with a smooth transition, the locking section is close to one side of the hemostatic clamp, the hemostatic clamp transmission block is embedded in the hemostatic clamp sleeve, the hemostatic clamp tail plates are respectively embedded in the corresponding yield grooves, a pin is arranged on the front side of the hemostatic clamp sleeve body, and the pin passes through the free sections of the opening and closing slot holes on the two hemostatic clamp tail plates in sequence.

7. The bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp according to claim 1, characterized in that: The outer tube assembly includes an outer tube head and a first flexible tube, the reduced diameter portion is located at the front end of the outer tube head, the reduced diameter portion is in the form of a reduced diameter frustum ring extending forward, the reduced diameter portion includes an outer conical surface and an inner conical surface, the front ends of the outer conical surface and the inner conical surface form an annular front end surface; the reduced diameter portion is provided with a plurality of strip-shaped notches along the circumferential direction, the notches extend backward to the outer tube head, an inner boss is provided on the inner side of the rear portion of the outer tube head, and an outer step tightly matched with the inner boss is provided at the front end of the first flexible tube.

8. The bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp according to claim 7, characterized in that: The inner side of the rear end of the first flexible tube is tightly fitted and connected to the second flexible tube.

9. The bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp according to claim 3, characterized in that: The inner guide assembly includes an inner guide head, a flexible inner catheter and an inner guide wire. The front end of the inner guide head is provided with a guide groove that is engaged with the engagement groove of the tail hemostatic clip assembly. The rear end of the inner guide head is provided with a mounting hole. The inner guide wire is embedded in the flexible inner catheter. The front ends of the flexible inner catheter and the inner guide wire are tightly fitted and embedded in the mounting hole.

10. The bendable, rotatable and repeatedly openable and closed pliers-type continuous hemostatic clamp according to claim 9, characterized in that: A release clip assembly is connected between the hemostatic clip assembly and the inner guide assembly at the tail, and the release clip assembly includes two symmetrically arranged release clips, a release clip transmission block and a release clip sleeve; The release clip comprises a release clamp plate and a release clamp tail plate fixedly connected thereto, a release clamp sheet is provided at the front end of the release clip, a snap-in slot is provided in the center of the release clamp sheet for snapping with the snap-in slot of the tail hemostatic clamp assembly, an opening and closing slide groove is provided on the side of the release clamp tail plate close to the release clamp plate, and a through hole is provided on the side of the release clamp tail plate away from the release clamp plate; The release clamp transmission block comprises a release clamp transmission block body and a mounting plate, wherein the mounting plate comprises two and parallel fixedly connected to the front end of the release clamp transmission block body, a card slot is arranged at the rear of the release clamp transmission block body, two release clamp tail plates are stacked and inserted between the two mounting plates, a rotating shaft is arranged between the two mounting plates, and the rotating shaft is arranged through the through holes on the two release clamp tail plates in sequence; The release clamp sleeve tube comprises a release clamp sleeve tube body, the outer rear part of the release clamp sleeve tube body is provided with a convex ring adapted to the inner wall of the outer tube assembly, the front side of the convex ring is provided with an inclined guide surface, the front part of the release clamp sleeve tube body is axially provided with a pair of clamp grooves for the release clamp tail plate to pass through, the release clamp transmission block passes through the release clamp sleeve tube and the clamp groove extends out of the rear end of the release clamp sleeve tube, the two release clamp tail plates are respectively embedded in the corresponding clamp grooves, the clamp grooves are clamped with the guide grooves, the front side of the release clamp sleeve tube body passes through a fixed connecting rod, and the connecting rod passes through the opening and closing sliding grooves on the two release clamp tail plates in sequence.

Images