Pull-clamp-type multi-fire hemostatic clip device capable of bending, rotating, and repeated opening and closing

Abstract

The present invention relates to the technical field of medical instruments. Disclosed is a pull-clamp-type multi-fire hemostatic clip device capable of bending, rotating, and repeated opening and closing, comprising a hemostatic clip assembly and an inner guide assembly that 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. A snap-fit portion is arranged at the front end of each hemostatic clip. The rear ends of the two hemostatic clips are hinged to the front end of the hemostatic clip transmission block. An engaging portion is arranged at the rear part of the hemostatic clip transmission block, the hemostatic clip transmission block passes through the hemostatic clip sleeve, and the engaging portion is snap-fitted with the snap-fit portion of the hemostatic clip adjacent to a rear side thereof. An opening and closing mechanism for opening and closing or locking the two hemostatic clips is arranged between the two hemostatic clips and the hemostatic clip sleeve. A protruding portion is arranged on an outer side of the hemostatic clip sleeve, and a reduced-diameter portion adapted to the protruding portion is arranged at the front end of the outer tube assembly. The hemostatic clip device can reduce cumbersome operation steps of a physician, save surgical time, reduce resource waste, improve surgical efficiency, and reduce surgical costs.

Description

A type of pull-type continuous-fire hemostatic clip that can bend, rotate, and be repeatedly opened and closed. Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a flexible, rotatable, and repeatedly openable puller-type continuous-fire hemostatic clip. This application claims priority to: 1. An earlier application, application number 2025103120910, entitled "A Flexible, Rotatable, and Repeatably Openable Puller-Type Continuous-Fire Hemostatic Clip," priority date 2025-03-17; 2. An earlier application, application number 2025218289768, entitled "A Flexible, Rotatable, and Repeatably Openable Endoscopic Continuous-Fire Traction Clip," priority date 2025-08-27; 3. An earlier application, application number 2025219831354, entitled "A Flexible, Rotatable, and Repeatably Openable Endoscopic Continuous-Fire Fluorescent Marking Clip," priority date 2025-09-15. Background Technology

[0002] A hemostatic clip is a medical device primarily used for: 1. providing endoscopic markings; 2. in surgical procedures such as ESD, EMR, and POEM; 3. fixing a jejunal tube to the small intestinal wall; and 4. as an adjunct treatment for closing 20mm perforations in the gastrointestinal lumen that have been treated conservatively. Hemostatic clips are mainly used in conjunction with endoscopes to control bleeding and are typically made of metal.

[0003] Currently, hemostatic clips on the market mainly come in two structural forms: 1) Split-type hemostatic clips: One guidewire body is pre-loaded with one split-head hemostatic clip, and multiple split-head hemostatic clips are also provided. After one hemostatic clip is released into the body, the guidewire needs to be withdrawn from the endoscope, a new split-head hemostatic clip needs to be loaded, and the endoscope needs to be reinserted. 2) Integrated hemostatic clips: One guidewire body is pre-loaded with one split-head hemostatic clip. It is not equipped with or can be replaced with other split-head clips. After the hemostatic clip is released into the body, the guidewire is withdrawn from the endoscope and then discarded. A new hemostatic clip is then used, and the endoscope is reinserted to repeat other operations.

[0004] Existing hemostatic clips on the market have several drawbacks: Separate hemostatic clips are inconvenient to operate; changing to separate clips is cumbersome, prolonging surgery time, posing risks during clip changes, affecting product functionality, and requiring training for doctors; repeated insertion into the endoscope during a single surgery can damage the endoscope and waste time and effort. Integrated hemostatic clips, on the other hand, release only one clip per insertion and are then discarded, resulting in significant resource waste. Reusing a new clip involves repeating many unnecessary procedures and wasting valuable surgical time.

[0005] ESD (Extramucosal Dissection) involves two steps: peripheral incision and submucosal dissection. The difficulty mainly lies in the submucosal dissection. In some cases where tangential manipulation is challenging, it is difficult to observe the submucosal layer, which can easily lead to complications such as bleeding and perforation, and these complications are quite difficult to manage.

[0006] To ensure that doctors have a good field of vision so that the dissection procedure can be performed safely and effectively, traction clips are usually required. Traction clips are mainly used in ESD surgery for gastrointestinal lesions or when precise positioning of the lesion site is required.

[0007] Taking the Japanese ZEOCLIP hemostatic clip as an example, it is used in conjunction with the S-Oclip to achieve a tissue traction effect. The specific process is as follows: 1. Install the S-Oclip: Make an incision around the lesion, and select the area to be lifted at the mucosal end of the lesion to install the S-Oclip. To avoid clamping the muscularis propria, a local injection solution can be injected into the installation site first.

[0008] 2. Insert and fix the Zeoclip: Insert a standard Zeoclip and hang it on the ring part of the S-Oclip. Then fix the Zeoclip to the digestive tract wall on the opposite side of the lesion, slightly closer to the mouth. Before fixing, mark the area to confirm the direction and distance to ensure effective traction.

[0009] 3. Tissue dissection: Under the traction of ZEOCLIP, the submucosal layer will be in a direct view, making it easier for doctors to perform dissection operations safely and easily.

[0010] 4. Instrument recovery: After the lesion is removed, cut off the ring portion of the S-Oclip and recover the ZEOCLIP together with the lesion tissue.

[0011] The existing traction clamps have the following shortcomings:

[0012] 1. Inconvenient packaging and operation: Taking the Japanese ZEOCLIP as an example, at least two clips are needed for the traction clamp. Each clip is individually packaged and requires manual installation by medical staff onto the clamp applicator. This operation is cumbersome and easily damages the S-Oclip during placement. The risk of damage is even greater during stressful surgical procedures, thus wasting valuable surgical time. After placement, the endoscope is inserted again for further clamping. Repeating this process to place the second clip requires inserting the endoscope instrument channel twice.

[0013] 2. The operation is relatively difficult and requires a certain period of training before it can be operated.

[0014] During the placement of the second clip, the clip needs to pass through the S-Oclip's ring and then be pulled to the other side. This operation is quite difficult and requires training for the operator. The surgery can only be performed after the operator has mastered the operation.

[0015] In surgical procedures (open surgery, laparoscopic surgery), determining the location of cancer often requires the assistance of endoscopic equipment (gastroscopy, colonoscopy) to confirm the location of the lesion. This involves using an endoscope to clamp a clip at the location of the cancer, and then confirming the location of the clip through palpation during surgery. This is difficult to achieve in surgical scenarios involving gastric cancer, digestive tract tumors, and other lesions that require precise localization. Summary of the Invention

[0016] This invention provides a flexible, rotatable, and repeatedly openable pull-clamp type continuous-fire hemostatic clip. This clip is easy to assemble and allows multiple clip components to operate continuously, reducing cumbersome procedures for doctors, saving surgical time, minimizing resource waste, improving surgical efficiency, and lowering surgical costs. Adjacent clip components are equipped with elastic components, allowing the front clip to hold the diseased tissue while the rear clip holds normal tissue at an appropriate position on the opposite side of the digestive tract wall, achieving traction and improving surgical efficiency. The hemostatic clip component with a fluorescent part can accurately locate the tumor, reducing surgical risks and patient discomfort, and resulting in a high surgical success rate.

[0017] The above-mentioned objective of the invention is achieved through the following technical solution:

[0018] A flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes an outer tube assembly and hemostatic clip assemblies disposed within the outer tube assembly. Multiple hemostatic clip assemblies are connected end-to-end. The outer tube assembly also includes an inner guide assembly connected to the hemostatic clip assembly at the tail end. Each hemostatic clip assembly includes two symmetrically arranged hemostatic clips, a hemostatic clip transmission block, and a hemostatic clip sleeve. The front end of each hemostatic clip has a latching portion, and the rear ends of the two hemostatic clips are respectively hinged to the front side of the hemostatic clip transmission block. The hemostatic clip transmission... The block has a locking part on its rear side. The hemostatic clamp transmission block passes through the hemostatic clamp sleeve and the locking part extends out of the rear end of the hemostatic clamp sleeve. The locking part engages with the latching part of the adjacent hemostatic clamp assembly on its rear side. An opening and closing mechanism for opening and closing or locking the two hemostatic clamps is provided between the two hemostatic clamps and the hemostatic clamp sleeve. The outer side of the hemostatic clamp sleeve has a protrusion. The front end of the outer tube assembly has a reduced diameter part for limiting the hemostatic clamp sleeve to realize the opening, closing, locking and rotation of the hemostatic clamp assembly. The reduced diameter part is adapted to the protrusion.

[0019] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes a hemostatic clip plate and a hemostatic clip tail plate fixed thereto. A hemostatic clip piece is fixed to the front end of the hemostatic clip plate. The latching part includes an engagement opening in the middle of the hemostatic clip piece. Clamping teeth are provided on the hemostatic clip pieces on both sides of the engagement opening. The clamping teeth on the two symmetrically arranged hemostatic clips mesh with each other.

[0020] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes a hemostatic clip transmission block comprising a hemostatic clip transmission block body and a hinge portion fixedly connected to its front end. The engaging portion is an engaging groove opened on the rear side of the hemostatic clip transmission block body. The hemostatic clip tail plate has a through hole near its end side, and the two hemostatic clip tail plates are rotatably connected to the hinge portion.

[0021] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes two hemostatic clip connecting plates that are fixedly connected in parallel to the front end of the hemostatic clip transmission block body. The two hemostatic clip tail plates are stacked and inserted between the two hemostatic clip connecting plates. A first hinge shaft passes through the two hemostatic clip connecting plates. The first hinge shaft passes through the through holes on the two hemostatic clip tail plates in sequence.

[0022] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes a hinged part comprising a mounting plate fixed to the front end of the hemostatic clip transmission block body. The two sides of the mounting plate are respectively vertically fixed to second hinge shafts, and the two second hinge shafts are embedded in the through holes of the corresponding hemostatic clip tail plates.

[0023] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes a hemostatic clip sleeve body. The protrusion includes a first retaining ring and a second retaining ring disposed on the rear side of the hemostatic clip sleeve body. The second retaining ring is close to the rear end of the hemostatic clip sleeve body. The front sides of the first and second retaining rings are respectively provided with inclined guide surfaces. The front part of the hemostatic clip sleeve body is provided with a pair of clearance grooves along the axial direction for the passage of the hemostatic clip tail plate.

[0024] In the aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip, 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.

[0025] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes an opening and closing mechanism comprising an opening and closing slot on the tail plate of the hemostatic clip. The opening and closing slot is located in front of the through hole and is L-shaped. The opening and closing slot includes a smoothly transitioning locking section and a free section. The locking section is located near the side of the hemostatic clip plate. The hemostatic clip transmission block is embedded in the hemostatic clip sleeve. A pin is inserted through the front side of the hemostatic clip sleeve body. The pin passes through the opening and closing slots on the two tail plates of the hemostatic clip in sequence.

[0026] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clamp includes an outer tube assembly comprising an outer tube head and a first flexible tube. The reduced-diameter portion is located at the front end of the outer tube head and is a forward-extending reduced-diameter conical ring. The reduced-diameter portion includes an outer conical surface and an inner conical surface, the front ends of which form an annular front end face. The reduced-diameter portion has multiple strip-shaped notches along its circumference, the notches extending rearward to the outer tube head. The rear inner side of the outer tube head has an inner boss, and the front end of the first flexible tube has an outer step that tightly fits with the inner boss.

[0027] In the aforementioned flexible, rotatable, and repeatedly openable pull-type continuous hemostatic clamp, the second flexible tube is tightly connected to the inner rear end of the first flexible tube.

[0028] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes an inner guide assembly comprising a snap-fit ​​part, a sleeve, and an inner guide wire. The front end of the snap-fit ​​part snaps into the snap-fit ​​groove of the tail hemostatic clip assembly, the sleeve is connected to the rear end of the snap-fit ​​part, and the inner guide wire is embedded and fixedly connected inside the sleeve.

[0029] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes an inner guide head as the locking part. The front end of the inner guide head is provided with a guide groove that engages with the locking groove of the tail hemostatic clip assembly. The rear end of the inner guide head is provided with an installation hole. The sleeve is a flexible inner catheter, and the inner guide wire is embedded in the flexible inner catheter. The front end of the flexible inner catheter and the front end of the inner guide wire are tightly fitted and embedded in the installation hole.

[0030] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes a locking part comprising a release clip and a collar. The release clip comprises two symmetrically arranged release clip bodies, with the tails of the two release clip bodies fixedly connected to a clip tail. The front ends of the two release clip bodies are respectively provided with opposing clip grooves, which engage with the locking grooves of the tail hemostatic clip assembly. The middle portions of the two release clip bodies are respectively provided with opposing clip grooves, which are adapted to the collar. The outer diameter of the collar is adapted to the inner diameter of the outer tube assembly. The tube sleeve is a connecting tube, and the clip tail is fixedly connected to the connecting tube. The other end of the connecting tube is fixedly connected to the inner guide wire.

[0031] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes an elastic component connecting adjacent hemostatic clip assemblies. The elastic component comprises a tension spring, an elastic ring, and a spring ring. One end of the elastic ring is fixedly connected to a connecting post, which has a shaft hole. The connecting post is embedded in the inner cavity of the tension spring, and the spring shaft of the tension spring is embedded in the shaft hole. The middle inner side of the hemostatic clip has a traction hole. The rear end of the engaging part is fixedly connected to a traction ring. The spring end ring at the other end of the tension spring is engaged with the traction ring of the front hemostatic clip assembly. The spring ring is engaged between the elastic ring and the traction hole of the rear hemostatic clip assembly.

[0032] The aforementioned flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip includes a fluorescent part at the front of the clip, which is a strip-shaped sheet of fluorescent material. The front of the clip has a through-hole for injecting glue. The fluorescent part is attached to the outer wall of the clip and is fixedly connected to the clip through the glue injection hole. The fluorescent part extends out of the front end of the clip to form a compression part.

[0033] In summary, the beneficial technical effects of the present invention are as follows:

[0034] This invention allows for the pre-installation of multiple hemostatic clip components within the outer tube assembly via a head-to-tail interlocking mechanism. The inner guide assembly interlocks with the hemostatic clip components at the tail end. After the outer tube assembly is inserted into the endoscope, the pre-installed hemostatic clip components can be sequentially released into the patient's body by pushing, pulling, and rotating the inner guide assembly. This reduces cumbersome operating steps for doctors, saves surgical time, reduces resource waste, improves surgical efficiency, and lowers surgical costs.

[0035] In this invention, an elastic component is provided in two adjacent hemostatic clip assemblies. After the front hemostatic clip assembly clamps the diseased tissue, the rear hemostatic clip assembly clamps normal tissue at an appropriate position on the digestive tract wall opposite the diseased tissue, thus completing traction. Multiple sets of hemostatic clip assemblies can be used in this manner as needed for the surgery.

[0036] The hemostatic clip of this invention is equipped with a fluorescent part, which can accurately locate the tumor position, making it easy to operate and greatly shortening the operation time. The continuous firing feature also greatly shortens the operation time of multiple implantation of hemostatic clip components. It eliminates the need to repeatedly pass through the endoscopic instrument channel, reducing surgical risks and patient discomfort. The operation is precise, simple and convenient. Attached Figure Description

[0037] Figure 1 is a structural schematic diagram of Embodiment 1 of the present invention;

[0038] Figure 2 is a structural schematic diagram of the outer tube assembly removed according to Embodiment 1 of the present invention;

[0039] Figure 3 is a schematic diagram of the hemostatic clip assembly according to Embodiment 1 of the present invention;

[0040] Figure 4 is an exploded structural diagram of the hemostatic clip assembly according to Embodiment 1 of the present invention;

[0041] Figure 5 is an exploded structural diagram of the outer tube assembly according to Embodiment 1 of the present invention;

[0042] Figure 6 is a schematic diagram of the structure of the outer tube head in Embodiment 1 of the present invention;

[0043] Figure 7 is a schematic diagram of the structure of the inner guide component in Embodiment 1 of the present invention;

[0044] Figure 8 is a cross-sectional structural diagram of the inner guide component according to Embodiment 1 of the present invention;

[0045] Figure 9 is an exploded structural diagram of the inner guide component according to Embodiment 2 of the present invention;

[0046] Figure 10 is an exploded structural diagram of the hemostatic clip assembly according to Embodiment 2 of the present invention;

[0047] Figure 11 is an exploded structural diagram of the elastic component of Embodiment 2 of the present invention;

[0048] Figure 12 is a cross-sectional structural diagram of Embodiment 2 of the present invention;

[0049] Figure 13 is a schematic diagram of the structure of the outer tube assembly removed in Embodiment 2 of the present invention;

[0050] Figure 14 is a schematic diagram of the dissection structure of the hemostatic clip and fluorescent part in Embodiment 3 of the present invention;

[0051] Figure 15 is an exploded structural diagram of the hemostatic clip assembly of Embodiment 3 of the present invention;

[0052] Figure 16 is a cross-sectional view of the hemostatic clip of Embodiment 1 of the present invention when it is retracted.

[0053] Figure 17 is a cross-sectional view of the inner conical surface of the reduced diameter portion of the present invention abutting against the guide surface of the first retaining ring and with the hemostatic clip open.

[0054] Figure 18 is a cross-sectional view of the structure when the first retaining ring extends out of the outer tube head and the hemostatic clamp is open according to Embodiment 1 of the present invention.

[0055] Figure 19 is a cross-sectional view of the hemostatic clip in Embodiment 1 of the present invention when it is locked.

[0056] Figure 20 is a cross-sectional view of the hemostatic clip assembly in Embodiment 1 of the present invention when the locking of the hemostatic clip assembly is released by the subsequent hemostatic clip assembly.

[0057] Figure 21 is a cross-sectional view of the tail hemostatic clip assembly after locking and releasing according to Embodiment 1 of the present invention.

[0058] Figure 22 is a cross-sectional view of the tail hemostatic clip assembly retracted into the outer tube assembly according to Embodiment 1 of the present invention.

[0059] Figure 23 is a schematic diagram of the structure of the hemostatic clip assembly of Embodiment 2 of the present invention, in which the hemostatic clip extends out of the outer tube head and opens;

[0060] Figure 24 is a schematic diagram of the structure of the first retaining ring of the hemostatic clip tube in Embodiment 2 of the present invention extending out of the outer tube head;

[0061] Figure 25 is a schematic diagram of the locking structure of the hemostatic clip assembly in Embodiment 2 of the present invention;

[0062] Figure 26 is a schematic diagram of the structure of the rear hemostatic clip assembly of Embodiment 2 of the present invention, in which the hemostatic clip extends out of the outer tube head and releases the front hemostatic clip assembly.

[0063] Figure 27 is a schematic diagram of the structure of the first retaining ring of the hemostatic clip sleeve extending out of the outer tube head in the hemostatic clip assembly of Embodiment 2 of the present invention.

[0064] Figure 28 is a schematic diagram of the traction and lifting structure in Embodiment 2 of the present invention;

[0065] Figure 29 is a schematic diagram of the structure of the hemostatic clip of the rear hemostatic clip assembly after traction and lifting in Embodiment 2 of the present invention;

[0066] Figure 30 is a schematic diagram of the hemostatic clip assembly after the release clip extends out of the outer tube head and is released according to Embodiment 2 of the present invention;

[0067] Figure 31 is a schematic diagram of the elastic ring shearing structure of the elastic component in Embodiment 2 of the present invention.

[0068] The diagram shows: 1. Outer tube assembly; 11. Outer tube head; 111. Reduced diameter section; 1111. Outer conical surface; 1112. Inner conical surface; 1113. Front end face; 112. Notch; 113. Inner boss; 12. First flexible tube; 121. Outer step; 13. Second flexible tube; 14. Soft rubber layer; 2. Hemostatic clip assembly; 21. Hemostatic clip; 211. Hemostatic clip plate; 2111. Glue injection hole; 2112. Limiting protrusion; 2 12. Hemostatic clip tail plate; 2121. Through hole; 2122. Traction hole; 213. Hemostatic clip piece; 2131. Engaging joint; 2132. Clamping teeth; 22. Hemostatic clip transmission block; 221. Hemostatic clip transmission block body; 2211. Engaging groove; 2212. Traction ring; 222. Hinge part; 2221. Hemostatic clip connecting plate; 2222. First hinge shaft; 2223. Hinge shaft hole; 2224. Mounting piece; 2225. 23. Two hinge shafts; 23. Hemostatic clip tube; 231. Hemostatic clip tube body; 2311. First retaining ring; 2312. Second retaining ring; 2313. Relief groove; 2314. Pin hole; 3. Inner guide assembly; 31. Snap-fit ​​part; 311. Inner guide head; 3111. Guide groove; 3112. Mounting hole; 312. Release clip; 3121. Release clip body; 3122. Clip groove; 3123. Snap groove; 3124. Clip tail; 3 13. Collar; 32. Tube sleeve; 321. Flexible inner guide tube; 322. Connecting tube; 33. Inner guide wire; 4. Opening and closing mechanism; 41. Opening and closing slot; 411. Locking section; 412. Free section; 42. Pin; 5. Elastic assembly; 51. Tension spring; 511. Spring shaft; 512. Spring end ring; 52. Elastic ring; 521. Connecting post; 5211. Shaft hole; 53. Spring ring; 6. Fluorescent part; 61. Extrusion part. Detailed Implementation

[0069] The present invention will be further described in detail below with reference to Figures 1-31.

[0070] Example 1:

[0071] As shown in Figures 1-8, a pull-type continuous-fire hemostatic clip that can bend, rotate, and be repeatedly opened and closed includes an outer tube assembly 1 and a hemostatic clip assembly 2 disposed inside the outer tube assembly 1. The hemostatic clip assembly 2 includes multiple components connected end to end. The outer tube assembly 1 is also provided with an inner guide assembly 3 that is connected to the hemostatic clip assembly 2 at the tail end.

[0072] As shown in Figures 3 and 4, the hemostatic clip assembly 2 includes two symmetrically arranged hemostatic clips 21, a hemostatic clip transmission block 22, and a hemostatic clip sleeve 23. The front end of the hemostatic clip 21 is provided with a latching part. The rear ends of the two hemostatic clips 21 are respectively hinged to the front side of the hemostatic clip transmission block 22. The rear side of the hemostatic clip transmission block 22 is provided with a locking part. The hemostatic clip transmission block 22 passes through the hemostatic clip sleeve 23 and the locking part extends out of the rear end of the hemostatic clip sleeve 23. The locking part engages with the latching part 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. The outer side of the hemostatic clip sleeve 23 is provided with a protrusion. The front end of the outer tube assembly 1 is provided with a reduced diameter part 111 for limiting the hemostatic clip sleeve 23 to realize the opening, closing, locking, and rotation of the hemostatic clip assembly 2. The reduced diameter part 111 is adapted to the protrusion.

[0073] The hemostatic clip 21 includes a hemostatic clip plate 211 and a hemostatic clip tail plate 212 fixed thereto. A hemostatic clip piece 213 is fixed to the front end of the hemostatic clip plate 211. The locking part includes an engagement opening 2131 in the middle of the hemostatic clip piece 213. The engagement opening 2131 is U-shaped, and clamping teeth 2132 are provided on both sides of the engagement opening 2131 on the hemostatic clip pieces 213. The clamping teeth 2132 on the two symmetrically arranged hemostatic clips 21 engage with each other. The engaging clamping teeth 2132 are used to clamp tissue and prevent the hemostatic clip assembly 2 from falling off.

[0074] The thickness of the hemostatic clip 213 is less than the width of the engagement groove 2211, so that there is a gap between the engagement opening 2131 of the hemostatic clip 211 and the engagement groove 2211, ensuring that two adjacent hemostatic clip assemblies 2 can bend along with the bending of the outer tube assembly 1.

[0075] The hemostatic clip transmission block 22 includes a hemostatic clip transmission block body 221 and a hinge portion 222 fixedly connected to its front end. The engaging portion is an engaging 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 rotatably connected to the hinge portion 222.

[0076] In Embodiment 1, as shown in Figure 4, the hinge part 222 includes two hemostatic clamp connecting plates 2221 that are fixedly connected in parallel to the front end of the hemostatic clamp transmission block body 221. Two hemostatic clamp tail plates 212 are stacked and inserted between the two hemostatic clamp connecting plates 2221. A first hinge shaft 2222 passes through the two hemostatic clamp connecting plates 2221. The first hinge shaft 2222 passes through the through holes 2121 on the two hemostatic clamp tail plates 212 in sequence. The two hemostatic clamps 21 can rotate on the first hinge shaft 2222 to realize the opening and closing action of the two hemostatic clamps 21.

[0077] In embodiments two and three, as shown in Figure 10, the hinge part 222 includes a mounting plate 2224 fixedly connected to the front end of the hemostatic clip transmission block body 221. The two sides of the mounting plate 2224 are respectively vertically fixed to the second hinge shaft 2225. The two second hinge shafts 2225 are embedded in the through holes 2121 of the corresponding hemostatic clip tail plate 212. The two hemostatic clips 21 can rotate on the second hinge shafts 2225 to realize the opening and closing action of the two hemostatic clips 21.

[0078] When the two symmetrically arranged hemostatic clips 21 are engaged, the two engagement openings 2131 engage to form a rectangular opening, and the cross-section of the engagement groove 2211 is square. The two engagement openings 2131 engage with the engagement groove 2211 of the hemostatic clip transmission block 22 in the front hemostatic clip assembly 2, forming multiple hemostatic clip assemblies 2 that are sequentially connected end to end.

[0079] The hemostatic clip 23 includes a cylindrical hemostatic clip body 231. The protrusion includes a first retaining ring 2311 and a second retaining ring 2312 disposed on the rear side of the hemostatic clip body 231. The second retaining ring 2312 is close to the rear end of the hemostatic clip body 231. The front sides of the first retaining ring 2311 and the second retaining ring 2312 are respectively provided with inclined guide surfaces. The front part of the hemostatic clip body 231 is provided with a pair of clearance grooves 2313 along the axial direction for the passage of the hemostatic clip tail plate 212.

[0080] The outer diameter of the first retaining ring 2311 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.

[0081] Assume the force that pushes the first retaining ring 2311 out of the outer tube head 11 is F1, the force that pushes the second retaining ring 2312 out of the outer tube head 11 is F2, the force that unlocks the two hemostatic clamps 21 from the free-locked state is F3, and the force that unlocks the two hemostatic clamps 21 from the locked state of clamping tissue is F4. The magnitude relationship of these four forces is F4 > F1 ≥ F2 > F3.

[0082] The opening and closing mechanism 4 includes an opening and closing slot 41 on the hemostatic clip tail plate 212. The opening and closing slot 41 is located in front of the through hole 2121. The opening and closing slot 41 is L-shaped and includes a smoothly transitioned locking section 411 and a free section 412. The locking section 411 is close to the side of the hemostatic clip 211. The hemostatic clip transmission block 22 is embedded in the hemostatic clip sleeve 23. The hemostatic clip tail plates 212 in the two hemostatic clips 21 are respectively embedded in the corresponding relief grooves 2313. A pin 42 is inserted through the front side of the hemostatic clip sleeve body 231. The pin 42 passes through the opening and closing slots 41 on the two hemostatic clip tail plates 212 in sequence.

[0083] During installation, the two hemostatic clips 21 are opened, and the pin 42 can easily pass through the free section 412 of the opening and closing slot 41 on the tail plate 212 of the two hemostatic clips. Then the two hemostatic clips 21 are locked, so that the pin 42 is located in the locking section 411 of the opening and closing slot 41 and is placed into the outer tube assembly 1.

[0084] The engagement slots 2131 on the two hemostatic clips 211 engage with the engagement grooves 2211 of the front hemostatic clip assembly 2, which can transmit pushing force, pulling force and rotational force forward, so as to realize the opening, closing, locking, forward and backward movement and rotation of the hemostatic clips 211.

[0085] When the hemostatic clip assembly 2 is assembled, the engaging groove 2211 of the front hemostatic clip assembly 2 is engaged at the engaging opening 2131 of the adjacent rear hemostatic clip 21. The two engaging openings 2131 form a closed rectangular opening when the hemostatic clip 21 is closed, and the two adjacent hemostatic clip assemblies 2 do not disengage when the hemostatic clip 21 is closed.

[0086] When the inner guide assembly 3 is pushed and pulled back and forth, if the pin 42 moves within the free section 412 of the opening and closing slot 41, the two hemostatic clips 21 can be repeatedly opened and closed.

[0087] If the pin 42 moves to the locking section 411 of the opening and closing slot 41, the two hemostatic clips 21 will be in the locked state.

[0088] As shown in Figures 5 and 6, the outer tube assembly 1 includes an outer tube head 11 and a first flexible tube 12. The reduced diameter section 111 is located at the front end of the outer tube head 11. The reduced diameter section 111 is a forward-extending reduced diameter truncated cone ring. The reduced diameter section 111 includes an outer cone surface 1111 and an inner cone surface 1112. The front ends of the outer cone surface 1111 and the inner cone surface 1112 form an annular front end face 1113. The reduced diameter section 111 is provided with a plurality of strip-shaped notches 112 along the circumference. The notches 112 extend rearward to the outer tube head 11. An inner boss 113 is provided on the inner rear side of the outer tube head 11. The front end of the first flexible tube 12 is provided with an outer step 121 that fits tightly with the inner boss 113. After the outer tube head 11 and the first flexible tube 12 are tightly fitted together, the connection between the two can be strengthened by fixing. The inner diameter of the outer tube head 11 is the same as the inner diameter of the first flexible tube 12, ensuring that the hemostatic clamp assembly 2 can move smoothly and steadily in the inner cavity of the outer tube assembly 1.

[0089] With the above design, after the hemostatic clip 21 clamps the tissue and achieves closure, when the inner guide component 3 is pushed forward again, the thrust that pushes the second retaining ring 2312 of the protrusion out of the outer tube head 11 is less than the unlocking thrust of the hemostatic clip 21 in the state of clamping the tissue, thereby realizing the release of the closure hemostatic clip 21.

[0090] The outer tube head 11 and the reduced diameter section 111 are integrally formed and made of medical-grade stainless steel. The outer tube head 11 is cylindrical, and the tapered structure of the reduced diameter section 111 facilitates insertion into the endoscope and serves as a control structure to cooperate in realizing various actions of the hemostatic clamp assembly 2.

[0091] The second flexible tube 13 is tightly connected to the inner rear end of the first flexible tube 12.

[0092] The first flexible tube 12 is a spiral-shaped flat wire spring tube with a relatively flat inner wall and several gaps, allowing for bending at a certain angle. This facilitates the movement of the hemostatic clamp assembly 2 back and forth within it. The first flexible tube 12 can deform according to the shape of the object and return to its original state after passing through. The first flexible tube 12 can also be made of other flexible materials. The second flexible tube 13 is a spiral-shaped round wire spring tube. Since the outer surface of the round wire spring tube is continuously uneven, a soft rubber layer 14 is wrapped around the outside of the round wire spring tube. The soft rubber layer 14 can effectively increase its tensile strength and reduce the coefficient of friction, thereby reducing frictional damage to the inner wall of the endoscopic forceps channel.

[0093] The inner guide assembly 3 includes a snap-fit ​​part 31, a sleeve 32, and an inner guide wire 33. The front end of the snap-fit ​​part 31 snaps into the snap-fit ​​groove 2211 of the tail hemostatic clip assembly 2. The sleeve 32 is connected to the rear end of the snap-fit ​​part 31, and the inner guide wire 33 is embedded and fixed in the sleeve 32.

[0094] As shown in Figures 7 and 8, in Embodiment 1, the snap-fit ​​part 31 is an inner guide head 311. The front end of the inner guide head 311 is provided with a guide groove 3111 that snaps into the snap-fit ​​groove 2211 of the tail hemostatic clip assembly 2. The rear end of the inner guide head 311 is provided with an installation hole 3112. The tube sleeve 32 is a flexible inner catheter 321. The inner guide wire 33 is embedded in the flexible inner catheter 321. The front end of the flexible inner catheter 321 and the front end of the inner guide wire 33 are tightly fitted and embedded in the installation hole 3112.

[0095] The outer diameter of the flexible inner conduit 321 is adapted to the inner diameter of the second flexible tube 13, ensuring the stability and smoothness of pushing the inner guide component 3 into the second flexible tube 13.

[0096] The flexible inner conduit 321 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 within the first flexible tube 12.

[0097] As shown in Figure 9, in embodiments two and three, the locking part 31 includes a release clip 312 and a collar 313. The release clip 312 includes two symmetrically arranged release clip bodies 3121. The tails of the two release clip bodies 3121 are fixedly connected to the clip tails 3124. The front ends of the two release clip bodies 3121 are respectively provided with opposite clip grooves 3122. The two clip grooves 3122 are engaged with the locking grooves 2211 of the tail hemostatic clip assembly 2. The middle parts of the two release clip bodies 3121 are respectively provided with opposite clip grooves 3123. The clip grooves 3123 are adapted to the collar 313. The outer diameter of the collar 313 is adapted to the inner diameter of the outer tube assembly 1. The tube sleeve 32 is a connecting tube 322. The clip tail 3124 is fixedly connected to the connecting tube 322. The other end of the connecting tube 322 is fixedly connected to the inner guide wire 33.

[0098] The collar 313 is fitted into the slot 3123 of the release clamp body 3121, which can keep the release clamp 312 in a closed state.

[0099] The thickness of the front end groove 3122 of the release clip body 3121 is less than the thickness of the engagement groove 2211. The groove 3122 is locked in the tail hemostatic clip assembly 2 with a gap between the engagement groove 2211 of the hemostatic clip transmission block 22. This allows the tail hemostatic clip assembly 2 and the release clip 312 to pass through bends.

[0100] Multiple notches 112 are provided on the reduced diameter section 111 and the outer tube head 11. When the inner guide assembly 3 is pushed forward, the hemostatic clip assembly 2 moves towards the front end. The inner conical surface 1112 of the reduced diameter section 111 contacts the guide surface on the front side of the first retaining ring 2311 on the outer tube head 11, causing the reduced diameter section 111 and the outer tube head 11 to expand outward, thereby pushing the first retaining ring 2311 out of the reduced diameter section 111. At this time, the reduced diameter section 111 is stuck between the first retaining ring 2311 and the second retaining ring 2312. At this time, the hemostatic clip 21 can be opened, closed, and rotated by pushing, pulling, and rotating the inner guide assembly 3. When the hemostatic clip 21 needs to clamp tissue, the inner guide assembly 3 is pulled backward, and the hemostatic clip 21 is clamped by the hemostatic clip. After the transmission block 22 exerts a large pulling force, the two hemostatic clips 21 are pulled backward, and the pin 42 moves from the free section 412 of the opening and closing slot 41 to the locking section 411 of the opening and closing slot 41, realizing the locking state of the hemostatic clips 21; then the inner guide assembly 3 is pushed forward again, and the guide surface on the front side of the second retaining ring 2312 cooperates with the inner conical surface 1112 of the reduced diameter part 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 part 111, finally making the hemostatic clip assembly 2 completely extend out of the outer tube head 11; continue to push the inner guide assembly 3, 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.

[0101] Under the push of the inner guide component 3, the hemostatic clamp assembly 2 can extend out of the outer tube head 11 of the outer tube assembly 1 in sequence. Under the action of the inner guide component 3, the hemostatic clamp assembly 2 extending out of the outer tube head 11 can rotate 360° along the front end of the outer tube head 11, thereby opening or closing the hemostatic clamp 21.

[0102] When the reduced diameter portion 111 is located between the first retaining ring 2311 and the second retaining ring 2312 of the hemostatic clip body 231, the inner guide assembly 3 can be moved back and forth or rotated to repeatedly open, close, lock and freely rotate the hemostatic clip 21.

[0103] As shown in Figures 11-13, in Embodiment 2, an elastic component 5 is connected between two adjacent hemostatic clip assemblies 2. The elastic component 5 includes a tension spring 51, an elastic ring 52, and a spring ring 53. One end of the elastic ring 52 is fixedly connected to a connecting post 521. The connecting post 521 is provided with a shaft hole 5211. The connecting post 521 is embedded in the inner cavity of the tension spring 51, and the spring shaft 511 of the tension spring 51 is embedded in the shaft hole 5211. The middle inner side of the hemostatic clip 21 is provided with a traction hole 2122. The rear end of the engaging part is fixedly connected to a traction ring 2212. The spring end ring 512 of the other end of the tension spring 51 is connected to the traction ring 2212 of the front hemostatic clip assembly 2. The spring ring 53 is connected between the elastic ring 52 and the traction hole 2122 of the rear hemostatic clip assembly 2.

[0104] The tension spring 51 and elastic ring 52 of the elastic component 5 provide elastic force. They can be in the form of non-spring elastic bodies, such as silicone wires, or non-elastic bodies, such as medical sutures.

[0105] As shown in Figures 14 and 15, in Embodiment 3, the front of the hemostatic clip 21 is provided with a fluorescent part 6, which is a strip-shaped sheet of fluorescent material. The front of the hemostatic clip 21 is provided with a through injection hole 2111. The fluorescent part 6 is attached to the outer wall of the hemostatic clip 21 and is fixedly connected to the hemostatic clip 21 through the injection hole 2111. The fluorescent part 6 extends out of the front end of the hemostatic clip 21 to form a squeezing part 61.

[0106] The hemostatic clip assembly 2 with fluorescent part 6, after the clamping teeth 2132 clamp the edge of the lesion tissue, the squeezing part 61 of fluorescent part 6 can squeeze the digestive tract mucosa at the edge of the lesion tissue to make it thinner, making it easier for fluorescent part 6 to receive excitation light and emit fluorescence, thereby accurately locating the tumor.

[0107] The front of the hemostatic clip 211 is provided with a limiting protrusion 2112, which passes through and protrudes from the fluorescent part 6, and abuts against the inner wall of the outer tube assembly 1. The limiting protrusion 2112 is constrained by the inner wall of the outer tube assembly 1, which can prevent the engagement port 2131 on the hemostatic clip 213 from disengaging from its engagement groove 2211, and ensure that the pushing force, pulling force and torque of the inner guide assembly 3 can be transmitted to the front hemostatic clip assembly 2 in sequence.

[0108] In Embodiment 1, the assembly process of the hemostatic clip assembly 2 is as follows: First, two hemostatic clip tail plates 212 are stacked between two hemostatic clip connecting plates 2221. The two hemostatic clip connecting plates 2221 are provided with coaxial hinge shaft holes 2223. The through holes 2121 on the two hemostatic clip tail plates 212 and the hinge shaft holes 2223 on the two hemostatic clip connecting plates 2221 are aligned. The first hinge shaft 2222 is passed through the two hinge shaft holes 2223 and fastened to the hemostatic clip connecting plate 2221. 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 relief groove 2313. The hemostatic clip sleeve body 231 is provided with a pin hole 2314. The pin hole 2314 is aligned with the two opening and closing slot holes 41, preferably aligned with the free section 412 of the opening and closing slot hole 41. The pin shaft 42 is inserted through and fixed into the pin hole 2314.

[0109] All the hemostatic clips 21 inside the outer tube assembly 1 are in a closed but not locked state. The hemostatic clips 21 are in a closed state but have not undergone elastic deformation. No matter how long they are stored, it will not affect the size of the opening angle of the hemostatic clips 21 when in use.

[0110] In Embodiment 1, when using a hemostatic clip, the hemostatic clip is first inserted into the mucosal tissue or blood vessel near the area requiring hemostasis through an endoscope. The hemostatic clip assembly 2 is then slowly pushed out from the outer tube head 11, so that the constricted portion 111 is positioned between the first retaining ring 2311 and the second retaining ring 2312 of the protruding portion. At this time, the hemostatic clip 21 is in the 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 adjusted to the ideal clamping position by pushing, pulling, and rotating the inner guide assembly 3 before clamping and locking, thereby ensuring the hemostatic effect.

[0111] The specific usage method of Example 1 is as follows: as shown in Figure 16-22,

[0112] As shown in Figure 16, both the hemostatic clip assembly 2 and the inner guide assembly 3 are located inside the outer tube assembly 1.

[0113] As shown in Figure 17, Step 1: Push the inner guide assembly 3 forward to slowly push the hemostatic clip assembly 2 at the front end out of the outer tube head 11. When the inner conical surface 1112 of the constricted section 111 blocks the guide surface of the first retaining ring 2311, the two hemostatic clips 21 will be opened.

[0114] As shown in Figure 18, step 2: Since there are multiple notches 112 on the reduced diameter section 111 and the outer tube head 11, the front end of the reduced diameter section 111 and the outer tube head 11 can be spread open. Continue to push the inner guide component 3 forward, and the first retaining ring 2311 of the protrusion can be pushed to the front side of the front end face 1113 of the reduced diameter section 111. At this time, the inner guide component 3 can be rotated freely, which will drive the hemostatic clip component 2 at the front to rotate freely in order to find a suitable angle.

[0115] Step 3: Pulling the inner guide component 3 backward will move the hemostatic clip component 2 backward. The front end face 1113 of the reduced diameter part 111 will block the rear end face of the first retaining ring 2311 of the hemostatic clip sleeve body 231, thus closing the two hemostatic clips 21 to perform a pre-locking action. Care should be taken to control the force of pulling the inner guide component 3 backward. Do not pull the inner guide component 3 to the locked state until the locking position is determined; the two hemostatic clips 21 can open and close freely.

[0116] Step 4: When the two hemostatic clips 21 are in a closed but not locked state, 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 second retaining ring 2312. At this time, the two hemostatic clips 21 will open to their maximum angle. Control the force of pushing the inner guide assembly 3, and do not push the second retaining ring 2312 of the protrusion out of the outer tube head 11. At this time, the inner guide assembly 3 can be rotated freely, which will drive the foremost hemostatic clip assembly 2 to rotate freely to find a suitable angle.

[0117] Repeating steps 3 and 4 allows for the repeated opening, closing, and free rotation of the hemostatic clip assembly 2. During this time, the pin 42 of the hemostatic clip assembly 2 moves back and forth within the free section 412 of the opening and closing slot 41 of the hemostatic clip tail plate 212.

[0118] Step 5: Repeat step 3.

[0119] As shown in Figure 19, step 6: After determining the position of the hemostatic clip 21, continue to pull the inner guide component 3 backward, which will drive the hemostatic clip transmission block 22 to move backward, so that the pin 42 of the opening and closing mechanism 4 enters the locking section 411 of the opening and closing slot 41, locking the two hemostatic clips 21 and performing a clamping and locking operation on the soft tissue.

[0120] As shown in Figure 20, in step 7: push the inner guide assembly 3 forward, causing 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 protrusion. At this time, the force that pushes the second retaining ring 2312 out of the outer tube head 11 is significantly less than the pushing force that unlocks the two hemostatic clips 21 clamping the tissue. Continue to push the inner guide assembly 3 forward, and the second retaining ring 2312 of the protrusion will be pushed out of the outer tube head 11. At this time, the hemostatic clip assembly 2 behind it will be slowly pushed out from inside the outer tube head 11. When the inner conical surface 1112 of the reduced diameter portion 111 on the outer tube head 11 abuts against the guide surface of the first retaining ring 2311 in the hemostatic clip assembly 2 behind it, the two hemostatic clips 21 will be opened, releasing the first hemostatic clip assembly 2.

[0121] Repeat the above steps for the subsequent hemostatic clip components 2.

[0122] As shown in Figures 21-22, after the hemostatic clamp assembly 2 at the tail releases the hemostatic clamp assembly 2 that precedes it, the hemostatic clamp assembly 2 at the tail does not perform the operation of clamping the tissue, and pulls back the inner guide assembly 3, pulling the hemostatic clamp assembly 2 at the tail back into the outer tube head 11, and is pulled out of the endoscope along with the remaining components.

[0123] As shown in Figure 23-31, the traction operation process of the hemostatic clip assembly in Example 2 is as follows:

[0124] As shown in Figure 23, step 1: pushing the inner guide component 3 forward will slowly push the hemostatic clip component 2 out from the outer tube head 11. The first retaining ring 2311 of the hemostatic clip sleeve 23 will be blocked by the inner conical surface 1112 of the constricted portion 111 of the outer tube head 11. At this time, the two hemostatic clips 21 of the hemostatic clip component 2 will be opened.

[0125] As shown in Figure 24, step 2: Since the front end of the outer tube head 11 has several notches 112, the front part of the outer tube head 11 can be opened. By continuing to push the inner guide component 3 forward, the first retaining ring 2311 of the hemostatic clip tube 23 can be pushed out to the front end of the front end face 1113 of the outer tube head 11. At this time, the inner guide component 3 can be rotated freely, causing the foremost hemostatic clip component 2 to rotate freely and find a suitable position to clamp the diseased tissue.

[0126] As shown in Figure 25, step 3: pull the inner guide component 3 backward, which will move the foremost hemostatic clip component 2 backward. The front end face 1113 of the outer tube head 11 will block the rear end of the first retaining ring 2311 of the hemostatic clip sleeve 23. The two hemostatic clips 21 will be pulled to the locked state. At this time, the foremost hemostatic clip component 2 completes the action of clamping the diseased tissue. At this time, it is necessary to pay attention to controlling the force of pulling the inner guide component 3 backward. If the clamping position is not determined, do not pull it to the locked state.

[0127] As shown in Figure 26, in step 4: Since the force required to push the second retaining ring 2312 of the hemostatic clip 23 out of the outer tube head 11 is significantly less than the force required to unlock the two hemostatic clips 21 that clamp and lock the tissue, the inner guide assembly 3 is pushed forward, causing the front hemostatic clip assembly 2 to move forward. This pushes the second retaining ring 2312 of the hemostatic clip 23 out of the outer tube head 11 until the first retaining ring 2311 of the hemostatic clip 23 in the rear hemostatic clip assembly 2 is blocked by the inner conical surface 1112 of the reduced diameter portion 111 of the outer tube head 11. At this point, the two hemostatic clips 21 in the rear hemostatic clip assembly 2 will open, releasing the front hemostatic clip assembly 2.

[0128] As shown in Figure 27, step 5: push the inner guide assembly 3 forward, and the first retaining ring 2311 of the hemostatic clip sleeve 23 in the rear hemostatic clip assembly 2 can be pushed out to the front part of the front end face 1113 of the outer tube head 11.

[0129] As shown in Figure 28, step 6: pull the diseased tissue, move the hemostatic clip assembly 2 on the rear side to the opposite side of the diseased tissue, and determine the clamping position of the normal tissue.

[0130] As shown in Figure 29, step 7: pull the inner guide assembly 3 backward, causing the hemostatic clip assembly 2 on the rear side to move backward in the outer tube assembly 1. The front end face 1113 of the outer tube head 11 will block the rear end of the first retaining ring 2311 of the hemostatic clip sleeve 23 in the rear hemostatic clip assembly 2. The two hemostatic clips 21 of the rear hemostatic clip assembly 2 will be pulled to the locked state. At this time, the rear hemostatic clip assembly 2 completes the action of clamping normal tissue. At this time, the rear hemostatic clip assembly 2 will pull the diseased tissue clamped by the front hemostatic clip assembly 2 to a higher protrusion through the elastic component 5.

[0131] As shown in Figure 30, step 8: push the inner guide assembly 3 forward, causing the hemostatic clip assembly 2 on the rear side to move forward, pushing the second retaining ring 2312 of the hemostatic clip sleeve 23 in the rear hemostatic clip assembly 2 out of the outer tube head 11. Continue to push the inner guide assembly 3 forward, and the collar 313 of the inner guide assembly 3 is blocked by the inner conical surface 1112 of the reduced diameter part 111 of the outer tube head 11 inside the outer tube head 11. The release clip body 3121 will be pushed out of the outer tube head 11 and opened, releasing the rear hemostatic clip assembly 2.

[0132] Step 9: Pull the inner guide assembly 3 backward to pull the release clamp body 3121 back into the outer tube head 11.

[0133] At this point, all operations for pulling the entire hemostatic clamp assembly 2 are complete, and the remaining components are removed from the endoscope.

[0134] As shown in Figure 31, after the removal of the diseased tissue, the elastic ring 52 of the elastic component 5 is cut off, disconnecting the connection between the elastic ring 52 and the spring ring 53. The removed diseased tissue, along with the hemostatic clip component 2 holding the front of the diseased tissue, the tension spring 51, and the elastic ring 52, are removed from the body. The hemostatic clip component 2 holding the rear of the normal tissue, along with the spring ring 53, remains in the body, awaiting normal dislodgement and expulsion.

[0135] The operation process of Example 3 is the same as that of Example 1, and will not be repeated here.

[0136] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip, comprising an outer tube assembly and a hemostatic clip assembly disposed within the outer tube assembly, characterized in that, The hemostatic clip assembly comprises multiple clips connected end-to-end. The outer tube assembly also includes an inner guide assembly connected to the hemostatic clip assembly at the tail end. Each hemostatic clip assembly includes two symmetrically arranged hemostatic clips, a hemostatic clip transmission block, and a hemostatic clip sleeve. The front end of each hemostatic clip has a latching 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 has a locking portion. The hemostatic clip transmission block passes through the hemostatic clip sleeve, and the locking portion extends beyond the rear end of the hemostatic clip sleeve. The locking portion engages with the latching portion of the adjacent hemostatic clip assembly on its rear side. An opening and closing mechanism is provided between the two hemostatic clips and the hemostatic clip sleeve for opening, closing, or locking the two hemostatic clips. The outer side of the hemostatic clip sleeve has a protrusion. The front end of the outer tube assembly has a reduced-diameter portion for limiting the hemostatic clip sleeve to achieve the opening, closing, locking, and rotational movements of the hemostatic clip assembly. The reduced-diameter portion is adapted to the protrusion.

2. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 1, characterized in that, The hemostatic clip includes a hemostatic clip plate and a hemostatic clip tail plate fixed thereto. The front end of the hemostatic clip plate is fixed to a hemostatic clip piece. The latching part includes an engagement opening in the middle of the hemostatic clip piece. The hemostatic clip pieces on both sides of the engagement opening are provided with clamping teeth, and the clamping teeth on the two symmetrically arranged hemostatic clips mesh with each other.

3. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 2, characterized in that, The hemostatic clamp transmission block includes a hemostatic clamp transmission block body and a hinge portion fixedly connected to its front end. The engaging portion is an engaging groove opened on the rear side of the hemostatic clamp transmission block body. The hemostatic clamp tail plate has a through hole near its end side. The two hemostatic clamp tail plates are rotatably connected to the hinge portion.

4. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 3, characterized in that, The hinge portion includes two hemostatic clamp connecting plates that are fixedly connected in parallel to the front end of the hemostatic clamp transmission block body. The two hemostatic clamp tail plates are stacked and inserted between the two hemostatic clamp connecting plates. A first hinge shaft passes through the two hemostatic clamp connecting plates. The first hinge shaft passes through the through holes on the two hemostatic clamp tail plates in sequence.

5. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 3, characterized in that, The hinge portion includes a mounting plate fixed to the front end of the hemostatic clamp transmission block body. The two sides of the mounting plate are respectively vertically fixed to second hinge shafts, and the two second hinge shafts are embedded in the through holes of the corresponding hemostatic clamp tail plates.

6. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 2, characterized in that, The hemostatic clip includes a hemostatic clip body. The protrusion includes a first retaining ring and a second retaining ring disposed on the rear side of the hemostatic clip body. The second retaining ring is close to the rear end of the hemostatic clip body. The front sides of the first retaining ring and the second retaining ring are respectively provided with inclined guide surfaces. The front part of the hemostatic clip body is provided with a pair of clearance grooves along the axial direction for the passage of the hemostatic clip tail plate.

7. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 6, characterized in that, 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.

8. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 3, characterized in that, The opening and closing mechanism includes an opening and closing slot on the hemostatic clip tail plate. The opening and closing slot is located in front of the through hole and is L-shaped. The opening and closing slot includes a smoothly transitioning locking section and a free section. The locking section is close to the side of the hemostatic clip. The hemostatic clip transmission block is embedded in the hemostatic clip sleeve. A pin is inserted through the front side of the hemostatic clip sleeve body. The pin passes through the opening and closing slots on the two hemostatic clip tail plates in sequence.

9. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 1, characterized in that, The outer tube assembly includes an outer tube head and a first flexible tube. The reduced diameter section is located at the front end of the outer tube head. The reduced diameter section is a forward-extending reduced diameter truncated cone ring. The reduced diameter section includes an outer cone surface and an inner cone surface. The front ends of the outer cone surface and the inner cone surface form an annular front end face. The reduced diameter section has multiple strip-shaped notches along the circumference. The notches extend rearward to the outer tube head. The inner rear side of the outer tube head has an inner boss. The front end of the first flexible tube has an outer step that fits tightly with the inner boss.

10. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 9, characterized in that, The second flexible tube is tightly connected to the inner rear end of the first flexible tube.

11. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 3, characterized in that, The inner guide assembly includes a snap-fit ​​part, a sleeve, and an inner guide wire. The front end of the snap-fit ​​part snaps into the snap-fit ​​groove of the tail hemostatic clamp assembly. The sleeve is connected to the rear end of the snap-fit ​​part, and the inner guide wire is embedded and fixed inside the sleeve.

12. The bendable, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 11, characterized in that, The snap-fit ​​part is an inner guide head. The front end of the inner guide head is provided with a guide groove that snaps into the snap-fit ​​groove of the tail hemostatic clip assembly. The rear end of the inner guide head is provided with an installation hole. The tube sleeve is a flexible inner catheter. The inner guide wire is embedded in the flexible inner catheter. The front end of the flexible inner catheter and the front end of the inner guide wire are tightly fitted and embedded in the installation hole.

13. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 11, characterized in that, The locking part includes a release clip and a collar. The release clip includes two symmetrically arranged release clip bodies. The tails of the two release clip bodies are fixedly connected to the clip tails. The front ends of the two release clip bodies are respectively provided with opposing clip grooves. The clip grooves are engaged with the locking grooves of the tail hemostatic clip assembly. The middle parts of the two release clip bodies are respectively provided with opposing clip grooves. The two clip grooves are adapted to the collar. The outer diameter of the collar is adapted to the inner diameter of the outer tube assembly. The tube sleeve is a connecting tube. The clip tails are fixedly connected to the connecting tube. The other end of the connecting tube is fixedly connected to the inner guide wire.

14. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 1, characterized in that, An elastic component is attached between two adjacent hemostatic clip assemblies. The elastic component includes a tension spring, an elastic ring, and a spring ring. One end of the elastic ring is fixedly connected to a connecting post. The connecting post has a shaft hole. The connecting post is embedded in the inner cavity of the tension spring, and the spring shaft of the tension spring is embedded in the shaft hole. A traction hole is provided on the inner side of the middle part of the hemostatic clip. The rear end of the engaging part is fixedly connected to a traction ring. The spring end ring of the other end of the tension spring is attached to the traction ring of the front hemostatic clip assembly. The spring ring is attached between the elastic ring and the traction hole of the rear hemostatic clip assembly.

15. The flexible, rotatable, and repeatedly openable pull-type continuous-fire hemostatic clip according to claim 1, characterized in that, The front of the hemostatic clip is provided with a fluorescent part, which is a strip-shaped sheet of fluorescent material. The front of the hemostatic clip is provided with a through-hole for injecting glue. The fluorescent part is attached to the outer wall of the hemostatic clip and is fixedly connected to the hemostatic clip through the glue injection hole. The fluorescent part extends out of the front end of the hemostatic clip to form a squeezing part.

Images