Releasable continuous hemostatic clip

Abstract

The application relates to a repeatedly openable and closable continuous hemostatic clip, which comprises an outer tube, a pull rod sleeved in the inner part of the outer tube and a plurality of hemostatic clip assemblies accommodated in the outer tube, a plurality of limiting openings are symmetrically arranged on the side surface of the outer tube, the number of the limiting openings corresponds to the number of the hemostatic clip assemblies, the plurality of limiting openings are arranged along the axial direction of the outer tube, a slot is arranged between two adjacent limiting openings, the two ends of the slot are respectively communicated with the two adjacent limiting openings, one end of the pull rod is fixedly connected with a clamping part, the plurality of hemostatic clip assemblies are sequentially sleeved on the pull rod, each hemostatic clip assembly comprises a fixing seat, a fixing pad, a clip seat and two hemostatic clip subassemblies arranged on the clip seat, two protrusions are symmetrically arranged on the outer surface of the fixing seat, the hemostatic clip assemblies can be continuously released from the outer tube by pulling and pushing the pull rod, and the hemostatic clip subassemblies can be repeatedly opened and closed under the action of the pull rod, so that the hemostasis effect can be ensured.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a repeatable hemostatic clip. 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, existing hemostatic clip devices capable of continuous operation cannot repeatedly open and close the clips during use. When the clips are not positioned ideally for the wound or blood vessel during hemostasis, they cannot be opened and closed to maintain the clips in the correct position, resulting in poor hemostasis. Therefore, existing technologies still have shortcomings and deficiencies. Summary of the Invention

[0004] The purpose of this invention is to provide a repeatable hemostatic clip that can be opened and closed repeatedly, solving the problem that existing hemostatic clip devices cannot be repeatedly opened and closed during use to keep the hemostatic clip in the ideal position, resulting in poor hemostatic effect.

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

[0006] A reusable, repeatedly opening and closing hemostatic clip includes an outer tube, a pull rod sleeved inside the outer tube, and multiple hemostatic clip assemblies housed within the outer tube. The outer tube has multiple symmetrically arranged limiting ports on its side, the number of which corresponds to the number of hemostatic clip assemblies. The multiple limiting ports are arranged along the axial direction of the outer tube, and a slot is provided between two adjacent limiting ports. The two ends of the slot communicate with the two adjacent limiting ports respectively. One end of the pull rod is fixedly connected to a locking part. Multiple hemostatic clip assemblies are sequentially sleeved on the pull rod. Each hemostatic clip assembly includes a fixing seat, a fixing pad, a clip base, and two hemostatic clips disposed on the clip base. Two protrusions are symmetrically arranged on the outer surface of the fixing seat.

[0007] Furthermore, the hemostatic clip includes a clip, a connecting part, and a transition part. The two ends of the transition part are respectively connected to the connecting part and the clip. The connecting part is provided with a mounting hole, and the end of the clip away from the transition part is provided with a clamping edge.

[0008] Furthermore, each of the clamping edges has a recess in the middle, and clamping teeth are also provided on the clamping edges, with the clamping teeth on the two hemostatic clamps in the same hemostatic clamp assembly meshing with each other.

[0009] Furthermore, one end of the fixing seat is open, and the other end of the fixing seat is provided with a seat hole. The open end of the fixing seat is provided with two locking protrusions, which are symmetrically arranged. The fixing seat is also provided with two locking grooves along the radial direction of the fixing seat.

[0010] Furthermore, the protrusion includes a first end face and a second end face, wherein the first end face is an inclined surface and the second end face is a vertical surface.

[0011] Furthermore, the fixing pad is provided with a through hole, and two first slots are symmetrically arranged on the edge of the fixing pad. A fixing pad boss is provided in the first slot, and two second slots are also symmetrically arranged on the fixing pad.

[0012] Furthermore, the clamp is provided with a clamp hole, and clamp protrusions are provided on the upper and lower sides of the clamp. The clamp protrusions are engaged with the mounting hole. Two engaging members are symmetrically provided on the end of the clamp away from the clamp protrusions. Each of the two engaging members has a supporting part on its opposite side. Two deformable parts are symmetrically provided inside the clamp.

[0013] Furthermore, it also includes a handle assembly, which 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 pull rod.

[0014] The beneficial effects of the present invention by adopting the above technical solution are as follows:

[0015] The reusable, continuously firing hemostatic clip provided by this invention includes an outer tube, a pull rod sleeved inside the outer tube, and multiple hemostatic clip assemblies housed within the outer tube. Multiple limiting ports are symmetrically arranged on the side of the outer tube, the number of which corresponds to the number of hemostatic clip assemblies. These limiting ports are arranged along the axial direction of the outer tube, and a groove is provided between two adjacent limiting ports, with both ends of the groove communicating with the two adjacent limiting ports. One end of the pull rod is fixedly connected to a locking part. Multiple hemostatic clip assemblies are sequentially sleeved on the pull rod. Each hemostatic clip assembly includes a fixing seat, a fixing pad, a clamping seat, and two hemostatic clips disposed on the clamping seat. By pulling and pushing the pull rod, the hemostatic clip assemblies can be continuously released from the outer tube, thereby achieving continuous firing of the hemostatic clip assemblies. During use, the hemostatic clips can be repeatedly opened and closed to ensure they are clamped at the ideal position in the tissue wound or blood vessel, thus improving the hemostatic effect. Furthermore, the hemostatic clips have a simple molding process and are easy to manufacture. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the repeatedly opening and closing hemostatic clip portion of the present invention.

[0017] Figure 2 This is a schematic diagram of another part of the repeatable hemostatic clip in this invention.

[0018] Figure 3 This is a schematic diagram of the structure of the outer tube in this invention.

[0019] Figure 4 for Figure 3 The cross-sectional view of the outer tube shown.

[0020] Figure 5 This is one of the structural diagrams of the hemostasis clip assembly.

[0021] Figure 6 The second schematic diagram of the hemostasis clip assembly.

[0022] Figure 7 A cross-sectional view of the hemostasis clip assembly (open state).

[0023] Figure 8 A cross-sectional view of the hemostasis clip assembly (closed state).

[0024] Figure 9 This is one of the structural diagrams of the hemostatic clip assembly.

[0025] Figure 10 The second schematic diagram of the hemostatic clip assembly.

[0026] Figure 11 Schematic diagram of the hemostatic clip assembly (Part 3)

[0027] Figure 12 This is one of the structural diagrams of the fixing seat in the hemostasis clip assembly.

[0028] Figure 13 This is the second schematic diagram of the fixing seat in the hemostasis clip assembly.

[0029] Figure 14 This is one of the cross-sectional views of the fixing seat in the hemostasis clip assembly.

[0030] Figure 15 This is the second sectional view of the fixing seat in the hemostasis clip assembly.

[0031] Figure 16 This is one of the structural diagrams of the fixing pad in the hemostasis clip assembly.

[0032] Figure 17 This is the second schematic diagram of the fixing pad in the hemostasis clip assembly.

[0033] Figure 18This is one of the structural diagrams of the clamp seat in the hemostasis clamp assembly.

[0034] Figure 19 This is the second schematic diagram of the clamp seat in the hemostasis clamp assembly.

[0035] Figure 20 for Figure 19 The cross-sectional view of the clamp shown.

[0036] Figure 21 This is a schematic diagram showing the unfolded state of a repeatable hemostatic clip.

[0037] Figure 22 This is a schematic diagram showing the state of a repeatedly opening and closing hemostatic clip when it is fully tightened.

[0038] Figure 23 This is a schematic diagram showing the state of the hemostatic clip component when it is disengaged in a repeatable hemostatic clip.

[0039] Reference numerals: 10, outer tube; 11, limiting port; 12, groove; 20, pull rod; 21, engaging part; 30, hemostatic clip assembly; 31, hemostatic clip; 311, clip; 312, connecting part; 3121, mounting hole; 313, transition part; 314, clamping edge; 3141, recess; 3142, clamping teeth; 32, fixing seat; 321, seat hole; 322, locking protrusion; 323, protrusion; 3 231. First end face; 3232. Second end face; 324. Slot; 33. Fixing pad; 331. Through hole; 332. First slot; 333. Fixing pad boss; 334. Second slot; 34. Clamp; 341. Clamp hole; 342. Clamping protrusion; 343. Engaging part; 3431. Supporting part; 344. Deformation part; 40. Handle assembly; 41. First handle; 42. Second handle. Detailed Implementation

[0040] To make the technical problem to be solved, the technical solution, and the beneficial effects of this invention clearer, the invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the invention, and therefore only shows the components relevant to the invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0041] like Figure 1 As shown, the present invention provides a repeatable opening and closing hemostatic clip, including an outer tube 10, a pull rod 20 sleeved inside the outer tube 10, and a plurality of hemostatic clip assemblies 30 housed inside the outer tube 10.

[0042] like Figure 3 and Figure 4 As shown, the outer tube 10 is generally cylindrical. Multiple limiting ports 11 are symmetrically arranged on the side of the outer tube 10. The number of limiting ports 11 corresponds to the number of hemostatic clip assemblies 30. The multiple limiting ports 11 are evenly spaced along the axial direction of the outer tube 10. A groove 12 is provided between two adjacent limiting ports 11, with both ends of the groove 12 communicating with the two adjacent limiting ports 11. The groove 12 is arranged along the axial direction of the outer tube 10, and its size is relatively small. Specifically, in this embodiment, the outer tube 10 can be composed of a circular tubular component made of metal or plastic at the front end and a circular spring tube at the rear end, but the material and shape of the outer tube 10 are not limited to these and are not specifically restricted.

[0043] like Figure 1 As shown, one end of the pull rod 20 is fixedly connected to a spherical engaging portion 21. Multiple hemostatic clip assemblies 30 are sequentially sleeved on the pull rod 20. In this embodiment, three hemostatic clip assemblies 30 are sequentially sleeved on the pull rod 20. It is understood that in other embodiments, the number of hemostatic clip assemblies 30 sleeved on the pull rod 20 can be two, four, or more. When the number of hemostatic clip assemblies 30 changes, the number of limiting ports 11 on the outer tube 10 should be adjusted accordingly.

[0044] like Figures 5 to 8 As shown, each hemostatic clip assembly 30 includes a fixing seat 32, a fixing pad 33, a clip seat 34, and two hemostatic clips 31 disposed on the clip seat 34.

[0045] like Figures 9 to 11 As shown, the hemostatic clip 31 is integrally molded from an elastic material. The hemostatic clip 31 includes a clip 311, a connecting portion 312, and a transition portion 313. Both ends of the transition portion 313 are connected to the connecting portion 312 and the clip 311, respectively. The connecting portion 312 has mounting holes 3121. The transition portion 313 is generally arc-shaped. The end of the clip 311 away from the transition portion 313 has a clamping edge 314. Each clamping edge 314 has a semi-circular recess 3141 in its middle, and clamping teeth 3142 are also provided on the clamping edge 314. The clamping teeth 3142 on two hemostatic clips 31 in the same hemostatic clip assembly 30 engage with each other. The hemostatic clip 31 provided in this embodiment has a simple manufacturing process and is easier to mold.

[0046] like Figures 18 to 20As shown, the clamp base 34 is provided with a clamp base hole 341, and clamp protrusions 342 are symmetrically arranged on the upper and lower sides of the clamp base 34. The size and shape of the clamp protrusions 342 are adapted to the size and shape of the mounting hole 3121 on the connecting part 312 of the hemostatic clamp 31. The clamp protrusions 342 are engaged with the mounting hole 3121, and the two hemostatic clamps 31 are installed on the clamp base 34 by snap-fitting. Two engaging members 343 are symmetrically arranged on the end of the clamp base 34 away from the clamp protrusions 342. The distance between the two engaging members 343 is smaller than the size of the engaging part 21 at the end of the pull rod 20. Each of the two engaging members 343 has a supporting part 3431 on its opposite side. Two deformable parts 344 are symmetrically arranged inside the clamp base 34.

[0047] like Figures 12 to 15 As shown, the fixing base 32 is generally cylindrical, with one end open and the other end having a seat hole 321. Two locking protrusions 322 are symmetrically arranged at the open end of the fixing base 32. Two protrusions 323 are symmetrically arranged on the outer surface of the fixing base 32, each protrusion including a first end face 3231 and a second end face 3232. The first end face 3231 is an inclined surface, and the second end face 3232 is a vertical surface. Two slots 324 are also symmetrically arranged along the radial direction of the fixing base 32, and these slots 324 are located near the seat hole 321.

[0048] like Figure 16 and Figure 17 As shown, the fixing pad 33 has a through hole 331 in the middle, and two first slots 332 are symmetrically arranged on the edge of the fixing pad 33. A fixing pad boss 333 is provided in the first slot 332, and a second slot 334 is also symmetrically arranged on the fixing pad 33. The width of the clip 311 in the hemostatic clip 31 is greater than the width of the first slot 332. When the hemostatic clip 31 reaches the fixing pad 33, the front end of the fixing pad 33 is engaged with the rear end of the clip 311 because the clip 311 is wider.

[0049] Each hemostatic clip assembly 30 includes a fixing base 32, a fixing pad 33, a clip base 34, and two hemostatic clips 31 disposed on the clip base 34. The clip protrusion 342 engages with the mounting hole 3121. The two hemostatic clips 31 are mounted on the clip base 34 through the engagement between the clip protrusion 342 and the mounting hole 3121. When the fixing base 32 and the fixing pad 33 are assembled together, the clip protrusion 322 on the fixing base 32 engages with the second clip groove 334 on the fixing pad 33 in a one-to-one correspondence.

[0050] like Figure 2As shown, the continuous-fire hemostatic clip device of the present invention also includes a handle assembly 40, which can release the hemostatic clip assembly 30 by operating the handle assembly 40. The handle assembly 40 includes a first handle 41 and a second handle 42. The first handle 41 is fixedly connected to the outer tube 10, and the second handle 42 is fixedly connected to the connecting rod 20. In use, the first handle 41 is held still, and the second handle 42 is moved when it is necessary to push or pull the connecting rod 20 for operation, which is convenient to use.

[0051] The process of using the repeating hemostatic clip in this invention is as follows: Please refer to... Figure 1 , Figures 21 to 23 First, the continuous-fire hemostatic clip device of this invention is inserted into the mucous membrane tissue or near the blood vessel in the human body where hemostasis is required. The pull rod 20 is pushed forward. The engaging portion 21 at the end of the pull rod 20 abuts against the deformable portion 344 on the clamp seat 34 in the hemostatic clip assembly 30. The engaging portion 21 at the end of the pull rod 20 pushes the clamp seat 34 forward. Since the clamp seat 34, the fixing pad 33, and the fixing seat 32 are assembled together, pushing the pull rod 20 can drive the entire hemostatic clip assembly 30 forward. As the hemostatic clip assembly 30 moves forward... As the hemostatic clip 31 in the foremost hemostatic clip assembly 30 gradually detaches from the outer tube 10, the clip 311 of the hemostatic clip 31 gradually unfolds under its own elastic force, thus opening the two hemostatic clips 31 in the hemostatic clip assembly 30. At this time, the boss of the fixing seat 32 on the fixing seat 32 is stuck at the front limiting port 11. Due to the restriction of the slot 12, pulling the lever 20 backward will not cause the fixing seat 32 to move backward.

[0052] After the two hemostatic clips 31 clamp the tissue wound or blood vessel, pull the lever 20 to move backward. Since the boss of the fixing seat 32 on the fixing seat 32 is stuck at the limiting port 11, pulling the lever 20 backward will not drive the fixing seat 32 to move backward. When the lever 20 is pulled, the lever 20 drives the hemostatic clip 31 to move backward inside the fixing seat 32 until the clip 311 of the hemostatic clip 31 is stuck at the fixing pad 33. Since the clip 311 is wider, the rear end of the clip 311 is stuck on the front end of the fixing pad 33. Under the action of the inner wall of the fixing seat 32, the hemostatic clip 31 gradually tightens, so that the hemostatic clip assembly 30 is in a closed state. Continue pulling the lever 20. The engaging part 21 at the end of the lever 20 applies a force to the engaging member 343, causing the engaging member 343 to deform and move outward. This, in turn, moves the supporting part 3431 on the engaging member 343 outward, and the engaging member 343 is locked in the slot 324 of the fixing seat 32. The hemostatic clip 31 is in a closed state and will not open again. Move the outer tube 10 backward, and the hemostatic clip assembly 30 at the foremost end can be disengaged from the outer tube 10, completing the release of the hemostatic clip assembly 30. This achieves the fixation of the hemostatic clip device on the patient's tissue wound or blood vessel, thereby achieving the hemostatic effect. After the hemostatic clip assembly 30 at the foremost position is released, the lever 20 is pulled further. The engaging part 21 at the end of the lever 20 passes through the through hole 331 on the fixing pad 33 and the clamping hole 341 on the clamping seat 34 in the next hemostatic clip assembly 30, and then passes between the two deformable parts 344 to reach the engaging part 343, pushing the lever 20 forward. Driven by the lever 20, the fixing seat 32 moves forward. When it passes through the slot 12 on the outer tube 10, the fixing seat 32 can pass smoothly. When the clamping piece 311 in the hemostatic clip 31 gradually unfolds, the hemostatic clip assembly 30 can be released according to the above operation, thereby realizing the continuous firing of the hemostatic clip assembly 30, which is convenient to use. Understandably, before the engagement member 343 deforms and the holding part 3431 is locked in the slot 324 of the fixing seat 32, the two hemostatic clips 31 can be repeatedly opened and closed under the action of the pull rod 20. During use, when the clamping position of the hemostatic clip 31 on the tissue wound or blood vessel is not ideal, the hemostatic clip 31 can be adjusted to the ideal clamping position by opening and closing the hemostatic clip 31, thereby ensuring the hemostatic effect.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0055] The above description, based on the preferred embodiments of the present invention, provides guidance. Those skilled in the art can make various changes and modifications without departing from the scope of the invention. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A reusable, repeatedly opening and closing, continuously firing hemostatic clip, characterized in that: The device includes an outer tube, a pull rod fitted inside the outer tube, and multiple hemostatic clip assemblies housed within the outer tube. The outer tube has multiple symmetrically arranged limiting ports on its side, the number of which corresponds to the number of hemostatic clip assemblies. These limiting ports are arranged along the axial direction of the outer tube, and a slot is formed between adjacent limiting ports, with each end of the slot communicating with the adjacent two limiting ports. One end of the pull rod is fixedly connected to a locking part. Multiple hemostatic clip assemblies are sequentially fitted onto the pull rod. Each hemostatic clip assembly includes a fixing seat, a fixing pad, a clip seat, and two hemostatic clips disposed on the clip seat. The fixing pad has a through hole, and its edge has two symmetrically arranged first locking grooves, each containing a fixing pad protrusion. The fixing pad is also symmetrically provided with two second slots; the clamp is provided with a clamp hole, the hemostatic clamp includes a clamp piece, a connecting part and a transition part, the connecting part is provided with a mounting hole, the upper and lower sides of the clamp are provided with clamp protrusions, the clamp protrusions are engaged with the mounting hole, the end of the clamp away from the clamp protrusion is symmetrically provided with two biting parts, the two biting parts are provided with abutting parts on opposite sides, the clamp is symmetrically provided with two deformable parts inside, the outer surface of the fixing seat is symmetrically provided with two protrusions, one end of the fixing seat is open, the other end of the fixing seat is provided with a seat hole, the open end of the fixing seat is provided with two locking protrusions, the two locking protrusions are symmetrically provided, and the fixing seat is also provided with two slots along the radial direction of the fixing seat.

2. The repeatedly opening and closing repeating hemostatic clip according to claim 1, characterized in that: The two ends of the transition portion are respectively connected to the connecting portion and the clamping piece, and the end of the clamping piece away from the transition portion is provided with a clamping edge.

3. The repeatedly opening and closing repeating hemostatic clip according to claim 2, characterized in that: The middle part of each clamping edge is provided with a recess, and clamping teeth are also provided on the clamping edge. The clamping teeth on two hemostatic clamps in the same hemostatic clamp assembly mesh with each other.

4. The repeatedly opening and closing repeating hemostatic clip according to claim 1, characterized in that: The protrusion includes a first end face and a second end face, wherein the first end face is an inclined surface and the second end face is a vertical surface.

5. A reusable, repeatedly opening and closing hemostatic clip according to claim 1, characterized in that: It also includes a handle assembly, which 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 pull rod.

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