Interventional therapy device for gastrointestinal hemorrhage

Abstract

The invention is applicable to the technical field of medical instruments, and provides an interventional therapy device for alimentary canal hemorrhage, which comprises an outer sleeve and a guide wire arranged in the outer sleeve, and further comprises a plurality of hemostatic clips, each hemostatic clip comprises a cylindrical body, a ball head is fixed at one end of each cylindrical body, and the other end of each cylindrical body is rotatably connected with two clamping jaws; a guide cavity is formed in the cylindrical body in the length direction, a guide block is slidably connected into the guide cavity, a tension spring is fixed to the end, close to the ball head, of the guide block, and the tail end of the tension spring is fixed into the guide cavity; when a plurality of hemostatic clips are sequentially connected end to end, the two clamping jaws on one hemostatic clip clamp the ball head on the adjacent hemostatic clip, so that the two adjacent hemostatic clips are in ball joint. A plurality of hemostatic clips can be placed in the outer sleeve at a time, a plurality of hemostatic clips can be used in sequence, the outer sleeve and the guide wire do not need to be repeatedly pulled out from a biopsy duct of an endoscope during use, then the surgical efficiency is improved, and surgical operation steps are simplified.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to an interventional treatment device for gastrointestinal bleeding. Background Art

[0002] When there is gastrointestinal bleeding, in order to quickly stop bleeding, hemostatic clips (titanium clips) can be used to mechanically clamp the bleeding site, clamp the vascular stump or surrounding tissues to block blood flow.

[0003] During specific operation, the endoscope is used to explore the bleeding site. One end of the titanium clip inserter is installed with a hemostatic clip (titanium clip). The titanium clip inserter and the hemostatic clip are inserted into the biopsy channel of the endoscope and sent into the digestive tract together. Then the hemostatic clip is clamped on the bleeding site, and then the vascular stump or surrounding tissues are clamped to block blood flow.

[0004] When the wound in the digestive tract is relatively large, multiple hemostatic clips are required to completely clamp the vascular stump or surrounding tissues to block blood flow. At this time, the titanium clip inserter needs to be withdrawn from the biopsy channel of the endoscope multiple times to facilitate the installation of hemostatic clips on the titanium clip inserter multiple times. Withdrawing and inserting the titanium clip inserter from the biopsy channel of the endoscope multiple times is time-consuming and laborious, prolongs the operation time, increases the anesthetic risk of the patient and the burden of postoperative recovery. Moreover, repeatedly withdrawing and inserting the titanium clip inserter may accelerate the wear of the inner wall of the biopsy channel, increase the risk of instrument jamming or sealing failure, and affect the safety of subsequent diagnosis and treatment operations. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide an interventional treatment device for gastrointestinal bleeding, aiming to solve the problem that when multiple titanium clips are required for the affected part of the digestive tract, the titanium clip inserter needs to be withdrawn from the biopsy channel of the endoscope multiple times, and the existing titanium clip inserter cannot install multiple hemostatic clips at one time.

[0006] The present invention is implemented as follows. An interventional treatment device for gastrointestinal bleeding includes an outer sheath and a guide wire disposed inside the outer sheath. It further includes: a plurality of hemostatic clips, each hemostatic clip including a columnar body with a ball head fixed at one end and two clamping jaws rotatably connected at the other end; a guiding cavity is provided along the length direction inside the columnar body, and a guiding block is slidably connected inside the guiding cavity. A tension spring is fixed at one end of the guiding block close to the ball head, and the end of the tension spring is fixed inside the guiding cavity; when a plurality of the hemostatic clips are connected end to end in sequence, the two clamping jaws on one hemostatic clip clamp the ball head on the adjacent hemostatic clip, causing the adjacent two hemostatic clips to be ball-connected; the outer contour diameter of the columnar body is smaller than the inner contour diameter of the outer sheath, and the end of the outer sheath for releasing the hemostatic clip is provided with a necking, so that the inner diameter of the end of the outer sheath for releasing the hemostatic clip is the same as the side wall diameter of the columnar body; a transmission assembly is provided on the guiding block, and when the guiding block moves inside the guiding cavity, the transmission assembly controls the opening and closing of the two clamping jaws; a connecting assembly is provided at one end of the guide wire, and one end of the guide wire is connected to the guiding block of one of the hemostatic clips through the connecting assembly; a one-way moving assembly is provided inside the outer sheath, and the one-way moving assembly controls that the plurality of hemostatic clips can only move towards the release end of the outer sheath; a positioning mechanism is provided at the release end of the outer sheath, and the positioning mechanism fixes the hemostatic clip located at the release end of the outer sheath to restrict the movement of the hemostatic clip.

[0007] In a further technical solution, the transmission assembly includes two racks embedded and installed on the side wall of the guiding block. A plurality of teeth are provided at the rotating ends of the two clamping jaws, and the clamping jaws are meshed with the racks through the plurality of teeth.

[0008] In a further technical solution, the one-way moving assembly includes a plurality of annular limiting grooves uniformly provided on the inner wall of the outer sheath. One end of the annular limiting groove is chamfered. A sinking groove is provided on the side wall of the columnar body, and an elastic piece is obliquely fixed inside the sinking groove. The elastic piece cooperates with the annular limiting groove.

[0009] In a further technical solution, the positioning mechanism includes a sliding groove one provided perpendicular to the length direction of the columnar body inside the columnar body. A sliding block is slidably connected inside the sliding groove one. One end of the sliding block is fixed with a connecting head, and the connecting head extends out of the columnar body. The other end of the sliding block is fixed with a compression spring one, and the end of the compression spring one is fixed inside the sliding groove one. An annular connecting groove is provided inside the necking of the outer sheath for releasing the hemostatic clip, and the connecting head cooperates with the annular connecting groove. A releasing assembly is provided on the columnar body, and the releasing assembly is used to drive the sliding block to move.

[0010] Further technical solution: The release component includes a transmission groove provided on the sliding block. An inclined surface is provided in the transmission groove. One end of the columnar body is slidably connected with a transmission rod along the length direction of the columnar body. One end of the transmission rod extends out of the columnar body from the end of the columnar body close to the ball head. The other end of the transmission rod is provided with a driving inclined surface that cooperates with the transmission groove.

[0011] Further technical solution: The connection component includes a connecting piece fixed to one end of the guide wire. A plurality of expansion parts are evenly arranged in a ring on the connecting piece. A connecting groove matching with the plurality of expansion parts is provided in the columnar body. Through holes I are provided at both ends of the columnar body where the connecting groove is located. The through hole I is smaller than the cross-sectional contour of the connecting groove. A through hole II is provided through the columnar body and the ball head. The through hole II is larger than the cross-sectional contour of the connecting groove.

[0012] Further technical solution: A ratchet rack is embedded and installed on the inner wall of the columnar body along the length direction of the columnar body. A sliding groove II is provided in the columnar body perpendicular to the length direction of the columnar body. A mouth-shaped slider is slidably connected in the sliding groove II. The connecting groove is located in the mouth-shaped slider. A transmission part is provided on the inner wall of the mouth-shaped slider and extends into the connecting groove. A compression spring II is fixed on the inner wall of the mouth-shaped slider far from the transmission part and is fixed in the sliding groove II. One end of the mouth-shaped slider is fixed with a meshing tooth, and the meshing tooth cooperates with the ratchet rack.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. Multiple hemostatic clips can be placed in the outer sleeve at one time in the present invention, and multiple hemostatic clips can be used in sequence. During use, there is no need to repeatedly draw out the outer sleeve and the guide wire from the biopsy channel of the endoscope, thereby improving the efficiency of the operation and simplifying the operation steps of the operation;

[0015] 2. The meshing tooth meshes with the ratchet rack, which can limit the opening of the two clamping jaws, stably clamp the affected tissue of the clamping jaws, and can also prevent the two clamping jaws on the hemostatic clip from loosening the ball head when transporting multiple hemostatic clips in the outer sleeve, so that multiple hemostatic clips are stably transported in the outer sleeve and prevent the disconnection between adjacent two hemostatic clips. Description of the drawings

[0016] Figure 1 is a schematic structural diagram of an interventional treatment device for digestive tract bleeding provided by the present invention;

[0017] Figure 2 is provided by the present invention Figure 1 is a schematic internal structure diagram of the release end of the outer sleeve in the present invention;

[0018] Figure 3 is provided by the present invention Figure 2 is an enlarged structural diagram of A in the present invention;

[0019] Figure 4 Provided by the present invention Figure 3 Schematic diagram of the state where multiple hemostatic clips in the outer sleeve are connected end to end

[0020] Figure 5 Provided by the present invention Figure 4 Schematic diagram of the internal structure of the columnar body

[0021] Figure 6 Provided by the present invention Figure 5 Schematic diagram of the internal structure of the guide block

[0022] Figure 7 Provided by the present invention Figure 6 Schematic diagram of the structure of the guide block

[0023] Figure 8 Provided by the present invention Figure 5 Enlarged schematic diagram of B

[0024] Figure 9 Provided by the present invention Figure 8 Schematic diagram of the internal structure of the sliding block

[0025] Figure 10 Provided by the present invention Figure 6 Schematic diagram of the expansion part and the mouth-shaped slider structure

[0026] In the drawings: 101. Outer sleeve; 102. Columnar body; 103. Claw; 104. Guide cavity; 105. Guide block; 106. Ball head; 107. Guide wire; 108. Tension spring

[0027] 2. Transmission assembly; 201. Rack; 202. Teeth

[0028] 3. Connection assembly; 301. Connector; 302. Connection groove; 303. Expansion part

[0029] 4. One-way movement assembly; 401. Elastic piece; 402. Annular limiting groove

[0030] 5. Positioning mechanism; 501. First sliding groove; 502. Sliding block; 503. First compression spring; 504. Connection head; 505. Annular connection groove

[0031] 6. Release assembly; 601. Transmission groove; 602. Transmission rod; 603. Driving inclined plane; 701. Ratchet rack; 702. Second sliding groove; 703. Mouth-shaped slider; 704. Second compression spring; 705. Meshing teeth; 706. Transmission part Detailed implementation manners

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0034] As Figures 1-6 shown, an interventional treatment device for gastrointestinal bleeding provided by an embodiment of the present invention includes an outer sheath 101 and a guide wire 107 disposed inside the outer sheath 101, and further includes: a plurality of hemostatic clips, each hemostatic clip including a columnar body 102, one end of the columnar body 102 being fixed with a ball head 106, and the other end of the columnar body 102 being rotatably connected with two clamping claws 103; a guiding cavity 104 is arranged along the length direction inside the columnar body 102, a guiding block 105 is slidably connected inside the guiding cavity 104, a tension spring 108 is fixed at one end of the guiding block 105 close to the ball head 106, and the end of the tension spring 108 is fixed inside the guiding cavity 104; when a plurality of the hemostatic clips are connected end to end in sequence, the two clamping claws 103 on one hemostatic clip clamp the ball head 106 on the adjacent hemostatic clip, causing the adjacent two hemostatic clips to be ball-connected; the outer contour diameter of the columnar body 102 is smaller than the inner contour diameter of the outer sheath 101, and the end of the outer sheath 101 for releasing the hemostatic clip is provided with a reduced opening, so that the inner diameter of the end of the outer sheath 101 for releasing the hemostatic clip is the same as the side wall diameter of the columnar body 102; a transmission assembly 2 is arranged on the guiding block 105, and when the guiding block 105 moves inside the guiding cavity 104, the transmission assembly 2 controls the opening and closing of the two clamping claws 103; one end of the guide wire 107 is provided with a connecting assembly 3, and one end of the guide wire 107 is connected to the guiding block 105 of one of the hemostatic clips through the connecting assembly 3; a one-way moving assembly 4 is arranged inside the outer sheath 101, and the one-way moving assembly 4 controls that the plurality of hemostatic clips can only move towards the release end of the outer sheath 101; a positioning mechanism 5 is arranged at the release end of the outer sheath 101, and the positioning mechanism 5 fixes the hemostatic clip located at the release end of the outer sheath 101 to restrict the movement of the hemostatic clip.

[0035] In the embodiment of the present invention, in the treatment state, the tension spring 108 pulls the guiding block 105, and the tension spring 108 generates a pulling force on the guiding block 105, and the guiding block 105 controls the two clamping claws 103 to close through the transmission assembly 2;

[0036] First, a plurality of hemostatic clips are connected end to end in sequence. Two jaws 103 on one hemostatic clip grip the ball head 106 on the adjacent hemostatic clip, causing the adjacent two hemostatic clips to be ball-connected. Furthermore, a plurality of hemostatic clips are ball-connected end to end in sequence. One end of the guide wire 107 is connected to the guide block 105 on the hemostatic clip near the release port of the outer sheath 101 through the connecting component 3. The plurality of hemostatic clips and the guide wire 107 are placed into the outer sheath 101. The outer contour diameter of the columnar body 102 is smaller than the inner contour diameter of the outer sheath 101, facilitating the movement of the columnar body 102 within the outer sheath 101. When the outer sheath 101 bends slightly, the inner wall of the outer sheath 101 will not clamp the columnar body 102, leaving a gap between the inner wall of the outer sheath 101 and the columnar body 102, and the adjacent hemostatic clips can move in multiple angles synchronously;

[0037] Push the guide wire 107. The guide wire 107 drives a plurality of hemostatic clips to move towards the release end of the outer sheath 101 until the columnar body 102 of one hemostatic clip is located at the constricted end of the outer sheath 101. Through the design of the constricted end at the release end of the outer sheath 101, the hemostatic clip in the use state can be in close contact with the outer sheath 101, avoiding the shaking of the hemostatic clip relative to the outer sheath 101. The unidirectional movement component 4 controls the plurality of hemostatic clips to only move towards the release end of the outer sheath 101, and the positioning mechanism 5 fixes the hemostatic clip located at the release end of the outer sheath 101, restricting the movement of the hemostatic clip;

[0038] At this time, the terminal hemostatic clip (columnar body 102) is in the working position. Then, continue to push the guide wire 107. The guide wire 107 overcomes the elastic force of the tension spring 108 and drives the guide block 105 to move. The guide block 105 drives the two jaws 103 to open through the transmission component 2, so that the affected tissue to be hemostatic is located between the two jaws 103. Then, pull the guide wire 107. The guide wire 107 and the tension spring 108 pull the guide block 105 to move in the reverse direction. The guide block 105 drives the two jaws 103 to close and clamp the affected tissue, thereby playing a role in hemostasis for the affected area;

[0039] Then, continue to pull the guide wire 107 so that the guide wire 107 is connected to the guide block 105 on the next hemostatic clip through the connecting component 3. The positioning mechanism 5 releases the hemostatic clip located at the release end of the outer sheath 101, and then releases the used hemostatic clip from the release end of the outer sheath 101. Push the guide wire 107. The guide wire 107 drives the columnar body 102 of the next hemostatic clip to be located at the constricted end of the outer sheath 101. The positioning mechanism 5 fixes the hemostatic clip located at the release end of the outer sheath 101, so that the next hemostatic clip is in the working position. Repeat the above operations to use a plurality of hemostatic clips in sequence. The present invention can place a plurality of hemostatic clips into the outer sheath 101 at one time and can use a plurality of hemostatic clips in sequence. During the use, it is not necessary to repeatedly draw out the outer sheath 101 and the guide wire 107 from the biopsy channel of the endoscope, thereby improving the surgical efficiency and simplifying the surgical operation steps.

[0040] As Figure 4 and Figure 5 shown, as a preferred embodiment of the present invention, the transmission assembly 2 includes two racks 201 embedded and installed on the side wall of the guide block 105. A plurality of teeth 202 are provided at the rotating ends of the two jaws 103. The jaws 103 are engaged with the racks 201 through the plurality of teeth 202.

[0041] In the embodiment of the present invention, the guide block 105 drives the two racks 201 to move. Both of the two racks 201 drive the two jaws 103 to rotate through the plurality of teeth 202, so as to open and close the two jaws 103.

[0042] As Figure 3 , Figure 4 and Figure 5 shown, as a preferred embodiment of the present invention, the one-way moving assembly 4 includes a plurality of annular limiting grooves 402 uniformly arranged on the inner wall of the outer sleeve 101. One end of the annular limiting groove 402 is chamfered. A sunk groove is provided on the side wall of the columnar body 102. An elastic piece 401 is obliquely fixed in the sunk groove. The elastic piece 401 cooperates with the annular limiting groove 402.

[0043] In the embodiment of the present invention, the elastic piece 401 obliquely extends out of the columnar body 102 through its own elastic force, so that the elastic piece 401 is inserted into the annular limiting groove 402. Since one end of the annular limiting groove 402 is chamfered, when the columnar body 102 moves towards the release end of the outer sleeve 101, the chamfer of the annular limiting groove 402 can push the elastic piece 401 into the sunk groove until the elastic piece 401 is located in the next annular limiting groove 402. The elastic piece 401 is inserted into the next annular limiting groove 402 through its own elastic force. Through the cooperation of the elastic piece 401 and the annular limiting groove 402, the columnar body 102 can only move towards the release end of the outer sleeve 101.

[0044] As Figure 3 , Figure 5 , Figure 8 and Figure 9As shown in the figure, as a preferred embodiment of the present invention, the positioning mechanism 5 includes a first sliding groove 501 disposed perpendicular to the length direction of the columnar body 102 within the columnar body 102. A sliding block 502 is slidably connected within the first sliding groove 501. One end of the sliding block 502 is fixed with a connecting head 504, and the connecting head 504 extends out of the columnar body 102. The other end of the sliding block 502 is fixed with a first compression spring 503, and the end of the first compression spring 503 is fixed within the first sliding groove 501. An annular connecting groove 505 is provided within the constriction of the outer sleeve 101 for releasing the hemostatic clip, and the connecting head 504 cooperates with the annular connecting groove 505. A release assembly 6 is provided on the columnar body 102, and the release assembly 6 is used to drive the sliding block 502 to move; the release assembly 6 includes a transmission groove 601 provided on the sliding block 502, and an inclined surface is provided within the transmission groove 601. One end of the columnar body 102 is slidably connected with a transmission rod 602 along the length direction of the columnar body 102. One end of the transmission rod 602 extends out of the columnar body 102 from the end of the columnar body 102 close to the ball head 106, and the other end of the transmission rod 602 is provided with a driving inclined surface 603 that cooperates with the transmission groove 601.

[0045] In the embodiment of the present invention, the chamfer is provided at the connection between the constriction of the release end of the outer sleeve 101 and the outer sleeve 101, and the transition is through an inclined surface;

[0046] In the initial state, the first compression spring 503 pushes the sliding block 502. When the columnar body 102 drives the connecting head 504 to coincide with the annular connecting groove 505, the columnar body 102 is inserted into the annular connecting groove 505, thereby restricting the movement of the columnar body 102;

[0047] When the guide wire 107 pushes the next hemostatic clip (the hemostatic clip adjacent to the hemostatic clip within the release end of the outer sleeve 101) to move, the jaws 103 on one hemostatic clip push the transmission rod 602 to move. The transmission rod 602 pushes the inclined surface on the transmission groove 601 through the driving inclined surface 603, thereby enabling the sliding block 502 to overcome the elastic force of the first compression spring 503 and move in the reverse direction. The sliding block 502 drives the connecting head 504 to retract into the columnar body 102, causing the connecting head 504 to disengage from the annular connecting groove 505, thereby releasing the movement restriction of the hemostatic clip within the release end of the outer sleeve 101, and thus pushing out the hemostatic clip within the release end of the outer sleeve 101;

[0048] Until the next hemostatic clip is located within the release end of the outer sleeve 101, the first compression spring 503 pushes the sliding block 502. When the columnar body 102 drives the connecting head 504 to coincide with the annular connecting groove 505, the columnar body 102 is inserted into the annular connecting groove 505, thereby restricting the movement of the columnar body 102. When releasing multiple hemostatic clips, the above operation can be repeated.

[0049] Such as Figure 4 、 Figure 5 and Figure 6As shown, as a preferred embodiment of the present invention, the connecting component 3 includes a connecting piece 301 fixed to one end of a guide wire 107. A plurality of expansion parts 303 are annularly and evenly arranged on the connecting piece 301. A connecting groove 302 matching the plurality of expansion parts 303 is arranged in the columnar body 102. Through holes one are arranged at both ends of the connecting groove 302 on the columnar body 102, and the through holes one are smaller than the cross-sectional contour of the connecting groove 302. A through hole two is penetrated through the columnar body 102 and the ball head 106, and the through hole two is larger than the cross-sectional contour of the connecting groove 302.

[0050] In the embodiment of the present invention, when using the device, a plurality of hemostatic clips are sequentially threaded on the guide wire 107, and the plurality of hemostatic clips are connected end to end in sequence. Two clamping jaws 103 on one hemostatic clip clamp the ball head 106 on the adjacent hemostatic clip, causing the adjacent two hemostatic clips to be ball-jointed, and further enabling the plurality of hemostatic clips to be ball-jointed end to end in sequence;

[0051] When the plurality of expansion parts 303 on the connecting piece 301 are squeezed, their volume shrinks. The expansion parts 303 are made of an elastic material and are similar to arc-shaped spring pieces, so that the plurality of expansion parts 303 are located in the connecting groove 302 on the hemostatic clip near the release port of the outer sleeve 101, and the plurality of expansion parts 303 naturally expand, and then the connecting piece 301 is fixed on the guiding block 105 of the hemostatic clip near the release port of the outer sleeve 101; when the guide wire 107 is pulled, the guide wire 107 drives the guiding block 105 to move through the connecting piece 301 and the expansion parts 303, and the guiding block 105 drives the columnar body 102 to move through the tension spring 108. Then, when the guide wire 107 is pushed, the hemostatic clip moves towards the release end of the outer sleeve 101;

[0052] When the hemostatic clip (columnar body 102) is fixed at the release end of the outer sleeve 101, the guide wire 107 is pulled, and the guide wire 107 drives the guiding block 105 to move relative to the columnar body 102;

[0053] When the hemostatic clip in the release end of the outer sleeve 101 is used up, the guide wire 107 is twitched, and the guide wire 107 pulls the connecting piece 301 and the expansion parts 303 to move. The plurality of expansion parts 303 are squeezed by the connecting groove 302 and their volume decreases, so that the connecting piece 301 and the expansion parts 303 are separated from the guiding block 105 until the connecting piece 301 and the expansion parts 303 move into the connecting groove 302 of the next hemostatic clip. Then, the guide wire 107 is connected to the guiding block 105 of the next hemostatic clip. When using the hemostatic clip in sequence, repeating the above operation can enable the guide wire 107 to be connected to the guiding blocks 105 of a plurality of hemostatic clips in sequence.

[0054] Such as Figure 5 、 Figure 6 and Figure 10As shown in the figure, as a preferred embodiment of the present invention, a ratchet rack 701 is embedded on the inner wall of the columnar body 102 along the length direction of the columnar body 102. A second sliding groove 702 is arranged in the columnar body 102 perpendicular to the length direction of the columnar body 102. An L-shaped slider 703 is slidably connected in the second sliding groove 702. The connecting groove 302 is located in the L-shaped slider 703, and a transmission part 706 is arranged on the inner wall of the L-shaped slider 703. The transmission part 706 extends into the connecting groove 302. A second compression spring 704 is fixed on the inner wall of the L-shaped slider 703 away from the transmission part 706. The second compression spring 704 is fixed in the second sliding groove 702. One end of the L-shaped slider 703 is fixed with a meshing tooth 705, and the meshing tooth 705 cooperates with the ratchet rack 701.

[0055] In the embodiment of the present invention, in the initial state, the second compression spring 704 pushes the L-shaped slider 703 to move. The L-shaped slider 703 drives the meshing tooth 705 to mesh with the ratchet rack 701. Through the meshing of the meshing tooth 705 and the ratchet rack 701 on the columnar body 102, the guide block 105 can be restricted from moving away from the ball head 106, that is, the stretching of the tension spring 108 can be restricted, the opening of the two clamping jaws 103 can be restricted, the affected tissue of the clamping jaws 103 can be stably clamped, and when multiple hemostatic clips are conveyed in the outer sleeve 101, the two clamping jaws 103 on the hemostatic clip can be prevented from loosening the ball head 106, so that multiple hemostatic clips are stably conveyed in the outer sleeve 101, and the disconnection between adjacent two hemostatic clips can be avoided;

[0056] When multiple expansion parts 303 are inside the connecting groove 302, multiple expansion parts 303 naturally expand. Multiple expansion parts 303 push the transmission part 706 to move in the reverse direction. The transmission part 706 overcomes the elastic force of the second compression spring 704 and drives the L-shaped slider 703 to move in the reverse direction. The L-shaped slider 703 drives the meshing tooth 705 not to mesh with the ratchet rack 701, releasing the movement restriction of the clamping jaws 103, so that the hemostatic clip located at the release end of the outer sleeve 101 can control the opening and closing of the clamping jaws 103.

[0057] In the above embodiment of the present invention, an interventional treatment device for gastrointestinal bleeding is provided. When in use, multiple hemostatic clips are sequentially threaded on the guide wire 107, and multiple hemostatic clips are connected end to end in sequence. The two clamping jaws 103 on one hemostatic clip clamp the ball head 106 on the adjacent hemostatic clip, causing the adjacent two hemostatic clips to be ball-connected, and further enabling multiple hemostatic clips to be ball-connected end to end in sequence, so that multiple expansion parts 303 are located in the connecting groove 302 of the hemostatic clip close to the release port of the outer sleeve 101. Multiple expansion parts 303 naturally expand, and then the connecting piece 301 is fixed on the guide block 105 of the hemostatic clip close to the release port of the outer sleeve 101, and then multiple hemostatic clips are sequentially placed into the outer sleeve 101;

[0058] Push the guide wire 107. The guide wire 107 drives the hemostatic clip near the release end of the outer sleeve 101 to move towards the release end of the outer sleeve 101. Since multiple hemostatic clips are ball-connected end to end in sequence, multiple hemostatic clips move synchronously towards the release end of the outer sleeve 101 until the columnar body 102 of one of the hemostatic clips is located at the reduced diameter end of the outer sleeve 101. The compression spring I 503 on this hemostatic clip pushes the sliding block 502. When the columnar body 102 drives the connecting head 504 to coincide with the annular connecting groove 505, the columnar body 102 is inserted into the annular connecting groove 505, thereby restricting the movement of the columnar body 102. Through the cooperation of the elastic piece 401 and the annular limiting groove 402, the hemostatic clip can only move towards the release end of the outer sleeve 101;

[0059] At this time, the hemostatic clip at the end (columnar body 102) is in the working position. Then continue to push the guide wire 107. The guide wire 107 overcomes the elastic force of the tension spring 108 and drives the guide block 105 to move. The guide block 105 drives the two jaws 103 to open through the rack 201 and the teeth 202, so that the affected tissue to be hemostatic is located between the two jaws 103. Then pull the guide wire 107. The guide wire 107 and the tension spring 108 pull the guide block 105 to move in the reverse direction. The guide block 105 drives the two jaws 103 to close and clamp the affected tissue, thereby playing a role in hemostasis for the affected area;

[0060] Then continue to pull the guide wire 107. The guide wire 107 pulls the connecting piece 301 and the expansion part 303 to move. Multiple expansion parts 303 are squeezed by the connecting groove 302 and their volume decreases, so that the connecting piece 301 and the expansion part 303 are separated from the guide block 105 until the connecting piece 301 and the expansion part 303 move into the connecting groove 302 of the next hemostatic clip, thereby connecting the guide wire 107 with the guide block 105 of the next hemostatic clip. When using the hemostatic clips in sequence, repeat the above operations. The guide wire 107 can be connected with the guide blocks 105 of multiple hemostatic clips in sequence. By repeating the above operations, multiple hemostatic clips can be used in sequence. The present invention can place multiple hemostatic devices in the outer sleeve 101 at one time and can use multiple hemostatic clips in sequence. During use, it is not necessary to repeatedly draw out the outer sleeve 101 and the guide wire 107 from the biopsy channel of the endoscope, thereby improving the efficiency of the operation and simplifying the operation steps of the operation.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An interventional treatment device for gastrointestinal bleeding, comprising an outer catheter and a guide wire disposed within the outer catheter, characterized in that, Further included are: A plurality of hemostatic clips, each hemostatic clip including a columnar body, with a spherical head fixed at one end of the columnar body, and two clamping jaws rotatably connected to the other end of the columnar body; A guiding cavity is arranged along the length direction inside the columnar body, a guiding block is slidably connected inside the guiding cavity, a tension spring is fixed at one end of the guiding block close to the spherical head, and the end of the tension spring is fixed inside the guiding cavity; When a plurality of hemostatic clips are connected end to end in sequence, the two clamping jaws on one hemostatic clip clamp the spherical head on the adjacent hemostatic clip, causing the adjacent two hemostatic clips to be ball-jointed; The outer contour diameter of the columnar body is smaller than the inner contour diameter of the outer sleeve, and the end of the outer sleeve for releasing the hemostatic clip is provided with a necking, so that the inner diameter of the end of the outer sleeve for releasing the hemostatic clip is the same as the side wall diameter of the columnar body; A transmission component is arranged on the guiding block. When the guiding block moves inside the guiding cavity, the transmission component controls the opening and closing of the two clamping jaws; One end of the guide wire is provided with a connecting component, and one end of the guide wire is connected to the guiding block of one of the hemostatic clips through the connecting component; A one-way movement component is arranged inside the outer sleeve, and the one-way movement component controls that a plurality of hemostatic clips can only move towards the release end of the outer sleeve; A positioning mechanism is arranged at the release end of the outer sleeve, and the positioning mechanism fixes the hemostatic clip located at the release end of the outer sleeve to restrict the movement of the hemostatic clip.

2. The interventional treatment device for gastrointestinal bleeding according to claim 1, wherein The transmission component includes two racks embedded and installed on the side wall of the guiding block, and a plurality of teeth are arranged at the rotating ends of the two clamping jaws. The clamping jaws are meshed with the racks through the plurality of teeth.

3. The interventional treatment device for gastrointestinal bleeding according to claim 1, wherein The one-way movement component includes a plurality of annular limiting grooves uniformly arranged on the inner wall of the outer sleeve, one end of the annular limiting groove is chamfered, a sunk groove is arranged on the side wall of the columnar body, and an elastic piece is obliquely fixed inside the sunk groove. The elastic piece cooperates with the annular limiting groove.

4. The interventional treatment device for gastrointestinal bleeding according to claim 1, wherein The positioning mechanism includes a sliding groove one arranged perpendicular to the length direction of the columnar body inside the columnar body, a sliding block is slidably connected inside the sliding groove one, a connecting head is fixed at one end of the sliding block, the connecting head extends out of the columnar body, a compression spring one is fixed at the other end of the sliding block, and the end of the compression spring one is fixed inside the sliding groove one. An annular connecting groove is arranged inside the necking of the outer sleeve for releasing the hemostatic clip. The connecting head cooperates with the annular connecting groove. A releasing component is arranged on the columnar body, and the releasing component is used to drive the sliding block to move.

5. The interventional treatment device for gastrointestinal bleeding according to claim 4, characterized in that, The releasing component includes a transmission groove arranged on the sliding block, an inclined surface is arranged inside the transmission groove, one end of the columnar body is slidably connected with a transmission rod along the length direction of the columnar body, one end of the transmission rod extends out of the columnar body from the end of the columnar body close to the spherical head, and the other end of the transmission rod is provided with a driving inclined surface that cooperates with the transmission groove.

6. The interventional treatment device for gastrointestinal bleeding according to claim 1, wherein, The connecting component includes a connecting piece fixed at one end of the guide wire, a plurality of expansion parts are annularly and uniformly arranged on the connecting piece, a connecting groove matching with the plurality of expansion parts is arranged inside the columnar body, through holes one are arranged at both ends of the columnar body where the connecting groove is located, the through holes one are smaller than the cross-sectional contour of the connecting groove, and through holes two are arranged through the columnar body and the spherical head, and the through holes two are larger than the cross-sectional contour of the connecting groove.

7. The interventional treatment device for digestive tract bleeding according to claim 6, wherein, A ratchet rack is embedded and installed along the length direction of the columnar body on the inner wall of the columnar body. A second sliding groove is arranged perpendicular to the length direction of the columnar body in the columnar body. An L-shaped slider is slidably connected in the second sliding groove. A connecting groove is located in the L-shaped slider. A transmission part is arranged on the inner wall of the L-shaped slider and extends into the connecting groove. A second compression spring is fixed on the inner wall of the L-shaped slider away from the transmission part, and the second compression spring is fixed in the second sliding groove. A meshing tooth is fixed at one end of the L-shaped slider, and the meshing tooth cooperates with the ratchet rack.

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