A serially delivered hemostatic clip device

Abstract

The application relates to a continuous hemostatic clip device which comprises an outer tube, a connecting tube sleeved in the inner part of the outer tube and a pull rod sleeved in the inner part of the connecting tube, the continuous hemostatic clip device further comprises a first hemostatic clip and a plurality of hemostatic clip assemblies accommodated in the outer tube, each hemostatic clip assembly comprises a second hemostatic clip and a clip seat, one end of the pull rod is provided with a clamping part, the second hemostatic clip comprises two transition parts, two connecting parts and two clamping pieces, a first clamping hole is formed between the two transition parts, the diameter of the first clamping hole is smaller than the diameter of the clamping part, the arc part of the connecting part is outwardly protruded to form a clamping convex, the front end part of the clamping piece is provided with a clamping edge, an axial hole is formed in the axial direction of the clip seat, a diameter expansion hole which is in communication with the axial hole is formed in one end of the clip seat, and a clip seat groove which is in communication with the axial hole is formed in the radial direction of the side surface of the clip seat. The continuous hemostatic clip device provided by the scheme is provided with a plurality of hemostatic clip assemblies, can continuously release the hemostatic clip, is simple to operate and convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a continuous-fire hemostatic clip device. Background Technology

[0002] Hemostasis using clips is a commonly used method of hemostasis under endoscopy. It is not only effective but also allows for observation of the specific condition of the lesion. The principle is to use the mechanical force of the clip to clamp the tissue wound or blood vessel, closing the vessel and stopping the bleeding. After several days, the wound heals, and the clip falls off and is excreted through the digestive tract. Endoscopic hemostasis with clips causes minimal damage to the surrounding mucosa and can directly clamp visible bleeding vessels and lesions, making it particularly suitable for ruptured small arteries.

[0003] However, most hemostatic clip devices currently on the market are single-shot structures, containing only one clip assembly. Once this assembly is used up, the entire device must be removed and replaced with a new clip for hemostasis, making the process cumbersome and inconvenient. Therefore, existing technologies still have shortcomings and deficiencies. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous-fire hemostatic clip device, which solves the problems of existing hemostatic clip devices being mostly single-fire structures, cumbersome operation, and inconvenient use.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows:

[0006] A series of hemostatic clips includes an outer tube, a connecting tube sleeved inside the outer tube, and a pull rod sleeved inside the connecting tube. The series of hemostatic clips further includes a first hemostatic clip housed within the outer tube and multiple hemostatic clip assemblies. Each hemostatic clip assembly includes a second hemostatic clip and a clip base. The first hemostatic clip and the multiple hemostatic clip assemblies are sequentially sleeved on the pull rod. The first hemostatic clip is fixedly connected to the connecting tube. One end of the pull rod is provided with a locking portion. The second hemostatic clip includes two transition portions, two connecting portions, and two clips. One end of the two connecting portions is connected through the two transition portions. The two clips... The clips are respectively disposed at the ends of the two connecting parts away from the transition parts. A first clamping hole is formed between the two transition parts. The diameter of the first clamping hole is smaller than the diameter of the engaging part. The arc-shaped part of the connecting part protrudes outward to form a clamping protrusion. A second clamping hole is formed at the connection between the connecting part and the two transition parts. The diameter of the second clamping hole is larger than the diameter of the engaging part. The front end of each clip is provided with a clamping edge. The middle part of each clamping edge is provided with a semi-circular arc-shaped recess. A third clamping hole is provided at the connection between the connecting part and the clip. The clamp seat has an axial hole. One end of the clamp seat has an enlarged diameter hole communicating with the axial hole. The side of the clamp seat has a clamp seat groove communicating with the axial hole along the radial direction.

[0007] Furthermore, a pull ring is fixedly connected to the end of the pull rod away from the engaging part.

[0008] Furthermore, it also includes a first handle and a second handle, the first handle being fixedly connected to the outer tube, and the second handle being fixedly connected to the connecting tube.

[0009] Furthermore, the clamping edge is also provided with clamping teeth, and the clamping teeth on the two clamping edges mesh with each other.

[0010] Furthermore, the hemostatic clip is integrally molded from an elastic material.

[0011] Furthermore, both the pull rod and the locking part are made of stainless steel.

[0012] Furthermore, the connecting pipe is a flat spring pipe or a plastic pipe with good toughness.

[0013] The beneficial effects of the present invention by adopting the above technical solution are as follows:

[0014] The continuous-fire hemostatic clip device provided by the present invention includes an outer tube, a connecting tube sleeved inside the outer tube, and a pull rod sleeved inside the connecting tube. The outer tube houses multiple hemostatic clip assemblies. Each hemostatic clip assembly includes a second hemostatic clip and a clip seat. Each second hemostatic clip includes two transition parts, two connecting parts, and two clip plates. The side of the clip seat has a clip seat groove communicating with the shaft hole along the radial direction. The hemostatic clip and clip seat have a special structure. Through the cooperation of the hemostatic clip and the clip seat, the hemostatic clip assembly can be continuously released when stopping bleeding in tissue wounds or blood vessels. The operation is simple and convenient. Attached Figure Description

[0015] Figure 1 This is a cross-sectional schematic diagram of a portion of the continuous-fire hemostatic clip device.

[0016] Figure 2 This is a schematic diagram of another part of the continuous-fire hemostatic clip device.

[0017] Figure 3 A schematic diagram of the hemostasis clip assembly.

[0018] Figure 4 A schematic diagram of the hemostatic clamp in its open state.

[0019] Figure 5 One of the schematic diagrams of the hemostatic clip in its closed state.

[0020] Figure 6 The second schematic diagram of the structure in the closed state of the hemostatic clamp.

[0021] Figure 7 This is one of the structural schematic diagrams of the clamp.

[0022] Figure 8 This is the second schematic diagram of the clamp.

[0023] Figure 9 This is a schematic diagram showing the state of the second hemostatic clip in the continuous-fire hemostatic clip device when it is deployed.

[0024] Figure 10 This is a schematic diagram showing the state when the second hemostatic clamp in the continuous-fire hemostatic clamp device begins to tighten.

[0025] Figure 11 This is a schematic diagram showing the state of the second hemostatic clamp in the continuous-fire hemostatic clamp device when it is fully tightened.

[0026] Figure 12 This is a schematic diagram showing the state of the second hemostatic clip in the continuous-fire hemostatic clip device when it is disengaged.

[0027] Reference numerals: 1. Pull rod; 2. Outer tube; 3. Connecting tube; 4. Hemostatic clip assembly; 5. Engaging part; 6. Pull ring; 7. Second hemostatic clip; 71. Transition part; 711. First clip hole; 72. Connecting part; 721. Clip protrusion; 722. Second clip hole; 73. Clip piece; 74. Clip edge; 741. Recess; 742. Clip tooth; 75. Third clip hole; 8. Clip seat; 81. Inner hole; 82. Expanded diameter hole; 83. Clip seat groove; 9. First handle; 10. Second handle; 11. First hemostatic clip. Detailed Implementation

[0028] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, the present invention provides a rapid-fire hemostatic clip device, including an outer tube 2, a connecting tube 3 sleeved inside the outer tube 2, and a pull rod 1 sleeved inside the connecting tube 3. The rapid-fire hemostatic clip device also includes a first hemostatic clip 11 housed within the outer tube 2 and multiple hemostatic clip assemblies 4, each hemostatic clip assembly 4 including a second hemostatic clip 7 and a clip seat 8. The first hemostatic clip 11 and the second hemostatic clip 7 have the same structure.

[0030] The outer tube 2 is a spring tube. For example... Figure 1 and Figure 2 As shown, one end of the pull rod 1 is fixedly connected to a spherical engaging portion 5, and the other end of the pull rod 1 is fixedly connected to a pull ring 6. Both the pull rod 1 and the engaging portion 5 are made of stainless steel. The pull rod 1 is slidably connected to the connecting pipe 3. In this embodiment, one first hemostatic clip 117 and three hemostatic clip assemblies 4 are sequentially fitted onto the pull rod 1. It can be understood that in other embodiments, the number of hemostatic clip assemblies 4 fitted onto the pull rod 1 can be two, four, or more.

[0031] The connecting tube 3 is a flat spring tube or a plastic tube with good toughness. The connecting tube 3 is slidably connected to the outer tube 2, and is sleeved on the outside of the pull rod 1 and fixedly connected to the first hemostatic clamp 11. The other three hemostatic clamp assemblies 4 are sequentially abutted and sleeved on the pull rod 1. In this embodiment, the first hemostatic clamp 11 plays a pushing role. By pushing the connecting tube 3, the first hemostatic clamp 11 drives the hemostatic clamp assembly 4 to move. It can be understood that in other embodiments, the first hemostatic clamp 11 can be replaced with other things with the same function, such as a push rod, push block, etc.

[0032] like Figures 4 to 6 As shown, each of the second hemostatic clips 7 is approximately symmetrically "V"-shaped and integrally molded from an elastic material. Each second hemostatic clip 7 includes two transition portions 71, two connecting portions 72, and two clips 73. One end of each connecting portion 72 is connected to the two transition portions 71, and the two clips 73 are respectively disposed at the ends of the two connecting portions 72 away from the transition portions 71. The transition portions 71 are approximately "U"-shaped, and a first clamping hole 711 is formed between the two transition portions 71. The diameter of the first clamping hole 711 is smaller than the diameter of the engaging portion 5. The connecting portions 72 are arc-shaped, and the arc-shaped portion of the connecting portion 72 protrudes outward to form a clamping protrusion 721. A second clamping hole 722 is formed at the connection point between the connecting portion 72 and the two transition portions 71. The diameter of the second clamping hole 722 is larger than the diameter of the engaging portion 5. Each clamping piece 73 has a clamping edge 74 at its front end, and a semi-circular recess 741 in the middle of each clamping edge 74. The clamping edge 74 also has clamping teeth 742, and the clamping teeth 742 on the two clamping edges 74 mesh with each other. A third clamping hole 75 is provided at the connection between the connecting part 72 and the clamping piece 73.

[0033] like Figure 7 and Figure 8 As shown, the clamp 8 is generally cylindrical with openings at both ends. The clamp 8 has an axial shaft hole 81, and one end of the clamp 8 has an enlarged diameter hole 82 communicating with the shaft hole 81. The diameter of the enlarged diameter hole 82 is larger than the diameter of the shaft hole 81. A clamp groove 83 communicating with the shaft hole 81 is radially formed on the side of the clamp 8.

[0034] like Figure 2 As shown, the continuous-fire hemostatic clip device of the present invention also includes a first handle 9 and a second handle 10. The first handle 9 is fixedly connected to the outer tube 2, and the second handle 10 is fixedly connected to the connecting tube 3. This arrangement facilitates the operation of the hemostatic clip device. When in use, hold the first handle 9 still, and when it is necessary to push the connecting tube 3 for operation, push the second handle 10 to move it; when it is necessary to pull the lever 1 for operation, hold the first handle 9 still, and pull the pull ring 6 to move it backward.

[0035] like Figures 9 to 12 As shown, the process of using the continuous-fire hemostatic clip device of the present invention is as follows: First, the hemostatic clip device of the present invention is inserted into the mucous membrane tissue or blood vessel near the body where hemostasis is required. The connecting tube 3 is pushed forward by the second handle 10. The connecting tube 3 pushes the hemostatic clip assembly 4 forward along the pull rod 1. The second hemostatic clip 7 in the hemostatic clip assembly 4 at the foremost end of the outer tube 2 gradually detaches from the restriction of the outer tube 2. Since the second hemostatic clip 7 is integrally formed from elastic material, the two clips 73 of the second hemostatic clip 7 gradually unfold under its own elastic force. When the connection between the connecting part 72 and the clip 73 on the second hemostatic clip 7 passes the locking part 5 at the end of the pull rod 6, the locking part 5 can pass through the position due to the setting of the third clamping hole 75. The second hemostatic clip 7 can pass smoothly under the action of the pushing force. Continue pushing the second handle 10, causing the second hemostatic clip 7 to continue moving forward. Since the diameter of the first clamping hole 711 is smaller than the diameter of the locking part 5 at the end of the pull rod 6, the locking part 5 at the end of the pull rod 6 is locked in the first clamping hole 711. Although the diameter of the second clamping hole 722 is larger than the diameter of the locking part 5 at the end of the pull rod 6, under the action of the thrust, the clamping protrusion 721 on the second hemostatic clip 7 is locked at the front end of the clamp seat 8. Therefore, the locking part 5 at the end of the pull rod 6 cannot disengage from the second clamping hole 722.

[0036] After the second hemostatic clip 7 clamps the tissue wound or blood vessel, pulling the pull ring 6 moves it backward. Under the action of force, the second hemostatic clip 7 gradually enters the clamp seat 8 from the shaft hole 81. The clamping protrusion 721 then enters the clamp seat groove 83. Since the distance between the two clamping protrusions 721 of the second hemostatic clip 7 is greater than the diameter of the shaft hole 81 of the clamp seat 8, the second hemostatic clip 7 will no longer continue to enter the clamp seat 8. However, since the second hemostatic clip 7 itself is made of elastic material, it can deform. If the pull ring 6 is pulled, the clamping protrusion 721 deforms under the action of force, and the front end of the second hemostatic clip 7 is pulled into the enlarged diameter hole 82 of the clamp seat 8. Because the diameter of the second clamping hole 722 is larger than the diameter of the engaging part 5, the engaging part 5 at the end of the pull rod 6 can disengage from the second clamping hole 722. When the pull ring 6 is stopped, the engaging part 5 at the end of the pull rod 6 is no longer locked in the first clamping hole 711, and can then disengage from the second clamping hole 722. After the engaging part 5 disengages from the second clamping hole 722, the hemostatic clip assembly 4 can be released. Furthermore, due to the absence of external force, the clamping protrusion 721 returns to its original shape under its own elasticity and engages in the clamping seat groove 83. The second hemostatic clip 7 is in a closed state, thus achieving the fixation of the hemostatic clip device on the tissue wound or blood vessel, achieving a hemostatic effect. Moreover, through this engaging structure, the second hemostatic clip 7 is not easily released during hemostasis, resulting in better performance.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A continuously firing hemostatic clip device, characterized in that: The device includes an outer tube, a connecting tube sleeved inside the outer tube, and a pull rod sleeved inside the connecting tube. The continuously firing hemostatic clamp device further includes a first hemostatic clamp housed within the outer tube and multiple hemostatic clamp assemblies. Each hemostatic clamp assembly includes a second hemostatic clamp and a clamp seat. The first hemostatic clamp and the multiple hemostatic clamp assemblies are sequentially sleeved on the pull rod. The first hemostatic clamp is fixedly connected to the connecting tube. The distal end of the connecting tube can abut against the proximal end face of an adjacent clamp seat via the first hemostatic clamp. The first hemostatic clamp acts as a pusher, moving the hemostatic clamp assembly by pushing the connecting tube. One end of the pull rod is provided with a locking portion. The second hemostatic clamp includes two transition portions, two connecting portions, and two clamping pieces. One end of each of the two connecting portions is connected through the two transition portions. The two clamping pieces are respectively disposed on the two connecting portions away from the transition portions. At one end of the first part, a first clamping hole is formed between the two transition parts. The diameter of the first clamping hole is smaller than the diameter of the engaging part. The arc-shaped part of the connecting part protrudes outward to form a locking protrusion. A second clamping hole is formed at the connection between the connecting part and the two transition parts. The diameter of the second clamping hole is larger than the diameter of the engaging part. The front end of the clamping piece is provided with a clamping edge. The middle part of the clamping edge is provided with a semi-circular arc-shaped recess. A third clamping hole is provided at the connection between the connecting part and the clamping piece. The clamp seat has an axial hole. One end of the clamp seat has an enlarged diameter hole communicating with the axial hole. The side of the clamp seat has a clamp seat groove communicating with the axial hole along the radial direction. The locking protrusion of the second hemostatic clamp abuts against the distal end face of the clamp seat. The body of the second hemostatic clamp is located outside the axial hole of the clamp seat. When the pull rod is pulled towards the proximal end, the engaging part can drive the second hemostatic clamp to move into the axial hole of the clamp seat, and the locking protrusion can be engaged into the clamp seat groove.

2. The repeating hemostatic clip device according to claim 1, characterized in that: A pull ring is fixedly connected to the end of the pull rod away from the engaging part.

3. The repeating hemostatic clip device according to claim 1, characterized in that: It also includes a first handle and a second handle, the first handle being fixedly connected to the outer tube, and the second handle being fixedly connected to the connecting tube.

4. The repeating hemostatic clip device according to claim 1, characterized in that: The clamping edge is also provided with clamping teeth, and the clamping teeth on the two clamping edges mesh with each other.

5. The repeating hemostatic clip device according to claim 1, characterized in that: The hemostatic clip is integrally molded from an elastic material.

6. The repeating hemostatic clip device according to claim 1, characterized in that: Both the pull rod and the locking part are made of stainless steel.

7. The repeating hemostatic clip device according to claim 1, characterized in that: The connecting pipe is a flat spring pipe or a plastic pipe with good toughness.

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