A bendable and repeatedly openable and closable continuous hemostatic clip

Abstract

This invention relates to the field of medical device technology, specifically to a flexible, repeatedly opening and closing hemostatic clip. It includes an outer tube assembly and a pull rod assembly fitted inside the outer tube assembly to house multiple hemostatic clip assemblies within the outer tube assembly. The outer tube assembly includes a bending portion, a limiting opening at the front end of the outer tube assembly, and a limiting groove on one side of the limiting opening. The pull rod assembly includes a rod body and an end head at one end of the rod body. The end head is shaped like multiple consecutive frustum-shaped steps, with the diameter of the largest cross-section of the frustum-shaped step increasing sequentially near the end head. Each hemostatic clip assembly includes a fixing seat, a fixing pad, a clip seat, and two hemostatic clips mounted on the clip seat. This invention features a bending portion on the outer tube, enabling the front end of the hemostatic clips to bend, solving the problem of limited usage position, and allowing for repeated opening and closing, thus improving the product's adaptability.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a continuous-fire hemostatic clip that can be bent and repeatedly opened and closed. Background Technology

[0002] Currently, hemostasis using hemostatic clips is a commonly used method for endoscopic hemostasis. 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 clips 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 hemostatic clips causes minimal damage to the surrounding mucosa and can directly clamp visible bleeding vessels and lesions, making it particularly suitable for endoscopic marking and hemostasis of digestive tract tissues.

[0003] However, existing hemostatic clips capable of continuous operation cannot be bent during use. Therefore, in some complex hemostatic situations, the hemostatic clips are not easy to operate, which can easily limit their application and result in poor hemostatic effect.

[0004] Therefore, it is necessary to provide a type of continuous hemostatic clip that can bend and be opened and closed repeatedly. Summary of the Invention

[0005] Based on the above-mentioned problems existing in the prior art, the purpose of this invention is to provide a flexible, repeatedly opening and closing hemostatic clip with a bending portion on the outer tube, which enables the front end of the flexible hemostatic clip to bend, thus solving the problem of limited usage position. Furthermore, the hemostatic clip assembly can be repeatedly opened and closed, improving the adaptability of the product.

[0006] 3. The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention discloses a flexible, repeatedly opening and closing hemostatic clip, including an outer tube assembly, a pull rod assembly sleeved inside the outer tube assembly, and multiple hemostatic clip assemblies housed inside the outer tube assembly. The outer tube assembly includes a bending portion, a limiting port opened at the front end of the outer tube assembly, and a limiting groove opened on one side of the limiting port. The pull rod assembly includes a rod body and an end head provided at one end of the rod body. The end head is in the shape of multiple continuous frustum-shaped steps, and the diameter of the largest cross section of the frustum near the end head increases sequentially. Each hemostatic clip assembly includes a fixing seat, a fixing pad, a clip seat, and two hemostatic clips provided on the clip seat. The clip seat includes a clip seat hole opened on the clip seat and a mating step provided on one side of the inner wall of the clip seat hole.

[0007] Furthermore, the outer tube assembly also includes a placement groove formed on the outer side wall of the middle portion of the outer tube assembly and an interface groove formed at the rear end of the outer tube assembly.

[0008] Furthermore, the tie rod assembly includes a rod body and an end head disposed at one end of the rod body. The end head is in the form of multiple consecutive frustum-shaped steps, and the diameter of the largest cross section of the frustum-shaped step near the end head increases sequentially.

[0009] 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.

[0010] 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.

[0011] Furthermore, the clamp also includes two stepped grooves formed on both sides of the mating step, clamping protrusions symmetrically arranged on the outer side of the clamp and clamping bosses arranged on the clamping protrusions.

[0012] Furthermore, the fixing seat is generally cylindrical, with one end of the fixing seat being open. The fixing seat includes a seat hole at the bottom of the fixing seat, a fixing boss on the outer side of the fixing seat, symmetrical slots on both sides of the fixing boss, a clearance groove on the fixing seat, two symmetrical protrusions at the open end of the fixing seat, and a protrusion groove at the protrusion.

[0013] Furthermore, the fixed boss includes a first end face, a second end face, and boss grooves formed on both sides of the fixed boss, wherein the first end face is an inclined surface and the second end face is a vertical surface.

[0014] 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.

[0015] Furthermore, the bendable and repeatedly openable continuous-fire hemostatic clip also includes a handle assembly, which includes a first handle and a second handle. The first handle is fixedly connected to the outer tube, and the second handle is fixedly connected to the pull rod assembly.

[0016] The beneficial effects of this invention are as follows: The bendable and repeatedly openable hemostatic clip of this invention includes an outer tube assembly, a pull rod assembly sleeved inside the outer tube assembly, and multiple hemostatic clip assemblies housed inside the outer tube assembly. The outer tube assembly includes a bending portion, a limiting opening at the front end of the outer tube assembly, and a limiting groove on one side of the limiting opening. The pull rod assembly includes a rod body and an end head at one end of the rod body. The end head is in the shape of multiple consecutive frustum-shaped steps, with the diameter of the largest cross-section of the frustum-shaped step near the end head increasing sequentially. Each hemostatic clip assembly includes a fixing seat, a fixing pad, a clip seat, and two hemostatic clips disposed on the clip seat. The clip seat includes a clip seat hole and a mating step on one side of the inner wall of the clip seat hole. The bendable and repeatedly openable hemostatic clip of this invention has a bending portion on the outer tube, enabling the front end of the hemostatic clip to bend, solving the problem of limited usage position, and allowing the hemostatic clip assembly to be repeatedly opened and closed, improving the adaptability of the product. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a partial structural diagram of the bendable and repeatedly openable hemostatic clip of the present invention.

[0019] Figure 2 This is a partial cross-sectional view of the bendable and repeatedly openable hemostatic clip of the present invention.

[0020] Figure 3 This is a schematic diagram of another part of the structure of the bendable and repeatedly openable hemostatic clip of the present invention.

[0021] Figure 4 This is a schematic diagram of the outer tube assembly of the present invention;

[0022] Figure 5 This is a schematic diagram of the outer tube assembly of the present invention when it is bent;

[0023] Figure 6 This is a schematic diagram of the structure of the pull rod assembly of the present invention;

[0024] Figure 7 This is a cross-sectional view of the tie rod assembly of the present invention;

[0025] Figure 8 This is a schematic diagram of the hemostatic clip assembly of the present invention;

[0026] Figure 9 This is a schematic diagram of the hemostatic clip assembly of the present invention from another perspective;

[0027] Figure 10This is a cross-sectional view of the hemostatic clip assembly of the present invention;

[0028] Figure 11 This is one of the structural schematic diagrams of the hemostatic clip in the hemostatic clip assembly of the present invention;

[0029] Figure 12 This is the second schematic diagram of the hemostatic clip in the hemostatic clip assembly of the present invention;

[0030] Figure 13 This is the third schematic diagram of the hemostatic clip in the hemostatic clip assembly of the present invention;

[0031] Figure 14 This is a schematic diagram of the structure of the fixing seat in the hemostatic clip assembly of the present invention;

[0032] Figure 15 This is a schematic diagram of the fixing seat in the hemostatic clip assembly of the present invention from another perspective;

[0033] Figure 16 This is a schematic diagram of the fixing pad in the hemostatic clip assembly of the present invention;

[0034] Figure 17 This is a schematic diagram of the fixing pad in the hemostatic clip assembly of the present invention from another perspective;

[0035] Figure 18 This is a schematic diagram of the clamp seat in the hemostatic clamp assembly of the present invention;

[0036] Figure 19 This is a schematic diagram of the clamp seat in the hemostatic clamp assembly of the present invention from another perspective;

[0037] Figure 20 This is a cross-sectional view of the clamp seat in the hemostatic clamp assembly of the present invention;

[0038] Figure 21 This is a schematic diagram of the hemostatic clip in the continuously firing hemostatic clip of the present invention when it is unfolded, which can bend and be opened and closed repeatedly.

[0039] Figure 22 This is a schematic diagram of the state when the hemostatic clip of the present invention is fully tightened, as the hemostatic clip can be bent and repeatedly opened and closed.

[0040] Figure 23 This is a schematic diagram of the state when the hemostatic clip of the present invention is fully locked, as the hemostatic clip can bend and be opened and closed repeatedly.

[0041] Figure 24 This is a schematic diagram showing the state of the front hemostatic clip component in a repeatedly opening and closing hemostatic clip when it is detached.

[0042] The component names and their numbers in the diagram are as follows:

[0043] Outer tube assembly 1, bending part 11, placement groove 12, limiting port 13, limiting groove 14, groove 15, interface groove 16;

[0044] Pull rod assembly 2, rod body 21, end head 22;

[0045] Hemostatic clip assembly 3, hemostatic clip 31, clip 31, connecting part 312, mounting hole 3121, transition part 313, clamping edge 314, arc-shaped recess 3141, clamping teeth 3142;

[0046] Fixed base 32, base hole 321, fixed boss 322, first end face 3221, second end face 3222, boss groove 3223, slot 323, first slot part 3231, second slot part 3232, slot limiting part 3233, clearance groove 324, locking protrusion 325, locking protrusion groove 326;

[0047] Fixing pad 33, through hole 331, first slot 332, fixing pad boss 333, second slot 334, clamping boss 345;

[0048] Clamp 34, clamp hole 341, mating step 342, step groove 343, clamping protrusion 344, clamping boss 345;

[0049] Handle assembly 4, first handle 41, second handle 42. Detailed Implementation

[0050] 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.

[0051] like Figure 1 , Figure 2 As shown, the present invention provides a flexible, repeatedly opening and closing hemostatic clip 100, which includes an outer tube assembly 1 and a pull rod assembly 2 sleeved inside the outer tube assembly 1 to accommodate multiple hemostatic clip assemblies 3 inside the outer tube assembly 1.

[0052] In some of these embodiments, such as Figure 3 , Figure 4As shown, the outer tube assembly 1 is generally cylindrical and includes a bending section 11, a placement groove 12 on the outer wall of the middle portion of the outer tube assembly 1, a limiting port 13 at the front end of the outer tube assembly 1, a limiting groove 14 on one side of the limiting port 13, a slot 15 on the outer side of the outer tube assembly 1, and an interface groove 16 at the rear end of the outer tube assembly 1. The outer tube assembly 1 has bending sections 11 spaced apart on its side wall, the number of which corresponds to the number of hemostatic clip assemblies 3. The bending sections 11 are laser-cut, forming a serpentine region capable of omnidirectional bending, and have a staggered structure with gaps. The placement groove 12 is located on the outer wall of the middle portion of the outer tube assembly 1, and is opened along the axial direction of the outer tube assembly 1, facilitating the movement of the hemostatic clip assemblies 3 during use. A limiting port 13 is located at the front end of the outer tube assembly 1. The hemostatic clip assembly 3 at the front end serves as a limiting point during use, preventing displacement during opening and closing. A limiting groove 14 is located on the side of the limiting port 13 away from the front end of the outer tube and communicates with the limiting port 13. The limiting groove 14 is small in size, facilitating displacement of the hemostatic clip assembly 3 within the outer tube assembly 1 under external force. Multiple slots 15 are evenly spaced. The slots 15 are small in size and arranged along the axis of the outer tube assembly 1. When the hemostatic clip assembly 3 is pushed, the outer tube assembly 1 experiences force, causing a certain deformation of the slots 15, facilitating the movement and removal of the hemostatic clip assembly 3. An interface groove 16 is located at the rear end of the outer tube assembly 1, suitable for connection with the handle operating part (not shown in the figure). In this embodiment, the outer tube assembly 1 is a circular tubular part made of laser-cut metal material. Other outer tube assemblies 1 are made of polymer tube material. However, the material and shape of the outer tube assembly 1 are not limited to these.

[0053] In some of these embodiments, such as Figure 6 , Figure 7 As shown, the pull rod assembly 2 includes a rod body 21 and an end head 22 disposed at one end of the rod body 21. The end head 22 is in the shape of multiple consecutive frustum-shaped steps, and the diameter of the largest cross-section of the frustum near the end head increases sequentially. Multiple hemostatic clip assemblies 3 are sequentially sleeved on the rod body 21, and are located in the inner cavity of the hemostatic clip assembly 3 and engage with the end head 22. In this embodiment, three hemostatic clip assemblies 3 are sequentially sleeved on the pull rod assembly 2. It can be understood that in other embodiments, the number of hemostatic clip assemblies 3 sleeved on the pull rod assembly 2 can be two, four or more.

[0054] In some of these embodiments, such as Figure 8-10 As shown, each hemostatic clip assembly 3 includes a fixing seat 32, a fixing pad 33, a clip seat 34, and two hemostatic clips 31 disposed on the clip seat 34.

[0055] In some of these embodiments, such as Figure 11-13 As shown, the hemostatic clip 31 is integrally molded from an elastic material. The two hemostatic clips 31 have a symmetrical structure. Each hemostatic clip 31 includes a clip 311, a connecting portion 312, and a transition portion 313. The two 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 the 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.

[0056] In some of these embodiments, such as Figures 19-20 As shown, the clamp 34 includes a clamping hole 341 formed on the clamp 34, a mating step 342 provided on one side of the inner wall of the clamping hole 341, two step grooves 343 formed on both sides of the mating step 342, clamping protrusions 344 symmetrically arranged on the outer side of the clamp 34, and clamping bosses 345 provided on the clamping protrusions 344. The clamping hole 341 is formed through both ends of the clamp 34, and the clamping hole 341 can pass through the pull rod assembly 2. The mating step 342 matches the shape of the end head 22 of the pull rod assembly 2, which is suitable for multiple consecutive frustum-shaped step-shaped end heads 22 to be engaged at the mating step 342. Due to the step-shaped engagement, the end heads 22 are prevented from moving forward and causing clamping failure during the pulling of the pull rod assembly 2. The step grooves 343 are formed on both sides of the mating step 342, which facilitates the removal of the end heads 22 of the pull rod assembly 2 from the mating step 342 in subsequent operations. The clamping protrusions 344 are provided on the two sides adjacent to the mating steps 342. The size and shape of the clamping protrusions 344 are adapted to the size and shape of the mounting holes 3121 on the connecting part 312 of the hemostatic clip 31. The clamping protrusions 344 are engaged with the mounting holes 3121, and the two hemostatic clips 31 are respectively mounted on the clip base 34 through the engagement of the mounting holes 3121. Two clamping bosses 345 are provided, located on the clamping protrusions 344 respectively. The clamping bosses 345 are cylindrical and are suitable for mating with the fixing base 32.

[0057] In some of these embodiments, such as Figure 14 , Figure 15As shown, the fixing seat 32 is generally cylindrical, and the interior of the cylindrical fixing seat 32 is suitable for assembling the clamping seat 34. One end of the fixing seat 32 is open. The fixing seat 32 includes a seat hole 321 formed at the bottom of the fixing seat 32, a fixing boss 322 formed on the outer side of the fixing seat 32, a slot 323 symmetrically formed on both sides of the fixing boss 322, a clearance groove 324 formed on the fixing seat 32, two symmetrical locking protrusions 325 formed at the open end of the fixing seat 32, and a locking protrusion groove 326 formed at the locking protrusions 325. The seat hole 321 is a circular hole, and the size of the seat hole 321 is able to pass through the end head 22 of the pull rod assembly 2. The fixing boss 322 is provided on the outer side of the fixing seat 32. The size of the fixing boss 322 matches the limiting port 13 of the outer tube assembly 1. The fixing boss 322 includes a first end face 3221, a second end face 3222, and boss grooves 3223 opened on both sides of the fixing boss 322. The first end face 3221 is an inclined surface, and the second end face 3222 is a vertical surface. Since the fixing seat 32 is sleeved and assembled inside the outer tube assembly 1, when the fixing seat 32 is located in the outer tube assembly 1, under the restriction of the inner wall of the outer tube assembly 1, the fixing boss 322 deforms under the action of the boss groove 3223. The fixing boss 322 can shrink inward, thereby realizing the assembly of the fixing seat 32 in the outer tube assembly 1. When the hemostatic clip assembly 3 is located at the front end of the outer tube assembly 1, the corresponding fixing seat 32 also moves to the front end of the outer tube assembly 1. The fixing boss 322 engages in the limiting port 13 of the outer tube assembly 1. Since the second end face 3222 is a vertical surface, the fixing boss 322 engaging in the limiting port 13 of the outer tube assembly 1 prevents the fixing seat 32 from moving backward with the pull rod assembly 2 when the pull rod assembly 2 is pulled, thus playing a limiting role. Two slots 323 are symmetrically provided and are located on both sides of the fixing boss 322. The slots 323 include a first slot part 3231, a second slot part 3232, and a slot limiting part 3233. The second slot 3232 is not close to the bottom of the fixed base 32. The length of the first slot portion 3231 is greater than that of the second slot portion 3232, and the width of the first slot portion 3231 is greater than that of the second slot portion 3232. The slot limiting portion 3233 is located between the first slot portion 3231 and the second slot portion 3232, and the slot limiting portion 3233 is inwardly contracted, with a width smaller than that of the second slot portion 3232. The clearance groove 324 and the fixing boss 322 are on the same axis. When the clamp 34 is assembled into the fixed base 32, the clamping boss 345 on the clamp 34 is located in the first slot portion 3231. At this time, the end head 22 of the pull rod assembly 2 is engaged in the mating step 342 of the clamp 34. By moving the pull rod assembly 2, the clamp 34 can be moved in the first slot portion 3231, thereby realizing the opening and closing of the two hemostatic clamps 31.When it is necessary to remove the hemostatic clamp assembly 3 located at the front end from the outer tube assembly 1, the pull rod assembly 2 is pulled further so that the clamping boss 345 passes through the slot limiting part 3233 and enters the second slot part 3232. At this time, the mating step 342 of the clamp seat 34 enters the clearance groove 324. Since there are two step grooves 343 on both sides of the mating step 342, the mating step 342 is deformed to the outside of the clearance groove 324 by the pressure of the end head 22 of the pull rod assembly 2. At this time, the internal space of the mating step 342 becomes larger, and the end head 22 of the pull rod assembly 2 can pass smoothly and then pass through the clamping hole 341 and the seat hole 321 at the bottom of the fixing seat 32 in sequence, so that the pull rod assembly 2 is separated from the hemostatic clamp assembly 3 located at the front end. The locking protrusions 325 are symmetrically opened on both sides of the fixed protrusion 322. One of the locking protrusions 325 is on the same axis as the fixed protrusion 322. Two locking grooves 326 are respectively provided and are on the same axis as the fixed seat 32. Since the clamping seat 34 needs to be assembled into the fixed seat 32, the distance between the two clamping protrusions 345 is greater than the inner diameter of the fixed seat 32. By pressing the locking grooves 326, the open end of the fixed seat 32 is deformed, so that the clamping protrusions 345 on the clamping seat 34 enter the locking groove 323 through the open end of the fixed seat 32.

[0058] In some of these embodiments, such as Figure 16 , Figure 17 As shown, the fixing pad 33 includes a through hole 331 in the middle, first slots 332 symmetrically formed on the edges of the fixing pad 33, fixing pad bosses 333 disposed in the first slots 332, and second slots 334 symmetrically formed on the edges of 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, due to the wider width of the clip 311, the front end of the fixing pad 33 is engaged with the rear end of the clip 311.

[0059] In some embodiments, the 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 connection 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 325 on the fixing base 32 engages with the second clip groove 334 on the fixing pad 33 in a one-to-one correspondence.

[0060] In some embodiments, the bendable and repeatedly openable hemostatic clip 100 of the present invention further includes a handle assembly 4, which releases the hemostatic clip assembly 33 by operating the handle assembly 4. The handle assembly 4 includes a first handle 41 and a second handle 42. The first handle 41 is fixedly connected to the outer tube assembly 1, and the second handle 42 is fixedly connected to the railing assembly 2. During use, the first handle 41 is held still, and the second handle 42 is moved when the lever 20 needs to be pushed or pulled for operation, making it convenient to use.

[0061] The usage process of the flexible, repeatedly opening and closing hemostatic clip 100 of this invention is as follows: Figure 21-24 As shown, the continuous-fire hemostatic clip of this invention is first inserted into the mucous membrane or near the blood vessel in the human body where hemostasis is required. The pull rod assembly 2 is then pushed forward. The end 22 of the pull rod assembly 2 abuts against the mating step 342 on the clamp seat 34 in the hemostatic clip assembly 3. The end 22 of the pull rod assembly 2 pushes the clamp seat 34. Since the clamp seat 34, the fixing pad 33, and the fixing seat 32 are assembled together, pushing the pull rod assembly 2 can drive the entire hemostatic clip assembly 3 forward. As the hemostatic clip assembly 3 moves forward, the foremost part... As the hemostatic clip 31 in the hemostatic clip assembly 30 gradually detaches from the outer tube assembly 1, 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 fixing boss 322 on the fixing seat 32 is locked at the front limiting port 13. Since the second end face 3222 is a vertical surface, pulling the pull rod assembly 2 backward will not cause the fixing seat 32 to move backward.

[0062] After the two hemostatic clips 31 clamp the tissue wound or blood vessel, pulling the lever assembly 2 backward will not cause the fixed seat 32 to move backward because the fixed protrusion 322 on the fixed seat 32 is locked at the limiting port 11. Pulling the lever assembly 2 backward will cause the hemostatic clip 31 to move backward inside the fixed seat 32 until the clip 311 of the hemostatic clip 31 is locked at the fixed pad 33. Because the clip 311 is wide, the rear end of the clip 311 is locked at the front end of the fixed pad 33. The hemostatic clip 31 gradually tightens under the action of the inner wall of the fixed seat 32, so that the hemostatic clip assembly 30 is in a closed state. At this time, when the lever assembly 2 is pulled back and forth, the end head 22 is locked in the mating step 342 of the clip seat 34. By moving the lever assembly 2, the clip seat 34 can be moved in the first slot 3231, and the two hemostatic clips 31 can be operated to open and close repeatedly. Continue pulling the lever assembly 2 so that the clamping boss 345 passes through the slot limiting part 3233 and enters the second slot part 3232. At this time, the mating step 342 of the clamping seat 34 enters the clearance groove 324. Since there are two step grooves 343 on both sides of the mating step 342, the mating step 342 is deformed outward of the clearance groove 324 by the pressure of the end head 22 of the lever assembly 2. At this time, the internal space of the mating step 342 increases, and the end head 22 of the lever assembly 2 can pass smoothly and then pass through the clamping seat hole 341 and the seat hole 321 at the bottom of the fixing seat 32. This causes the lever assembly 2 to detach from the hemostatic clamp assembly 3 at the front end, and the hemostatic clamp 31 is in a closed state and will not open again. Move the outer tube assembly 1 backward, and the hemostatic clamp assembly 3 at the front end can detach from the outer tube assembly 1, completing the release of the hemostatic clamp assembly 3, thereby realizing the fixation of the hemostatic clamp device on the patient's tissue wound or blood vessel, achieving the hemostatic effect. After the hemostatic clip assembly 3 at the foremost position is released, the pull rod assembly 2 is pulled further. The end 22 of the pull rod assembly 2 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. Then, from the entry mating step 342, the pull rod assembly 2 is pushed forward. Driven by the pull rod assembly 2, the fixing seat 32 moves forward. When it passes through the slot 15 on the outer tube assembly 1, the fixing seat 32 can pass smoothly. When the clamping piece 311 in the hemostatic clip 31 gradually unfolds, the hemostatic clip assembly 3 can be released according to the above operation, thereby realizing the continuous firing of the hemostatic clip assembly 3, which is convenient to use. Understandably, when the clamping protrusion 345 on the clamping seat 34 is located in the first slot 3231, the two hemostatic clamps 31 can be repeatedly opened and closed under the action of the pull rod assembly 2. During use, when the clamping position of the hemostatic clamp 31 on the tissue wound or blood vessel is not ideal, the hemostatic clamp 31 can be adjusted to the ideal clamping position by opening and closing the hemostatic clamp 31, thereby ensuring the hemostatic effect.

[0063] 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.

[0064] 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.

[0065] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of the present invention. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A type of repeatable hemostatic clip that can bend and be opened and closed repeatedly, characterized in that, The device includes an outer tube assembly, a pull rod assembly fitted inside the outer tube assembly, and multiple hemostatic clip assemblies housed inside the outer tube assembly. The outer tube assembly includes a bent portion, a placement groove on the outer wall of the middle portion of the outer tube assembly, a limiting opening at the front end of the outer tube assembly, and a limiting groove on one side of the limiting opening. The pull rod assembly includes a rod body and an end head at one end of the rod body. The end head is shaped like multiple consecutive frustum-shaped steps, with the diameter of the largest cross-section of the frustum-shaped step near the end head increasing sequentially. Each hemostatic clip assembly includes a fixing seat, a fixing pad, a clip seat, and two hemostatic clips mounted on the clip seat. The clip seat includes a clip seat hole and a mating step on one side of the inner wall of the clip seat hole. The mating step matches the shape of the end head of the pull rod assembly. The fixing seat is suitable for multiple consecutive frustum-shaped stepped ends to be engaged at the mating steps. The fixing seat is generally cylindrical, with one end open. The fixing seat includes a seat hole at the bottom of the fixing seat, a fixing boss on the outer side of the fixing seat, symmetrical slots on both sides of the fixing boss, a clearance groove on the fixing seat, two symmetrical locking protrusions at the open end of the fixing seat, and locking protrusion grooves at the locking protrusions. The fixing boss includes a first end face, a second end face, and boss grooves on both sides of the fixing boss. The first end face is an inclined surface, and the second end face is a vertical surface. The size of the seat hole of the fixing seat can pass through the end of the pull rod assembly. The fixing boss is located on the outer side of the fixing seat, and the size of the fixing boss matches the limiting port of the outer tube assembly.

2. The bendable and repeatedly openable hemostatic clip according to claim 1, characterized in that, The outer tube assembly also includes a placement groove formed on the outer side wall of the middle part of the outer tube assembly and an interface groove formed at the rear end of the outer tube assembly.

3. The bendable and repeatedly openable hemostatic clip according to claim 1, characterized in that, The hemostatic clip includes a clip, a connecting part, and a transition part. The two ends of the transition part are connected to the connecting part and the clip, respectively. 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.

4. The bendable and repeatedly openable hemostatic clip according to claim 3, 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.

5. The bendable and repeatedly openable hemostatic clip according to claim 1, characterized in that, The clamp also includes two stepped grooves formed on both sides of the mating step, clamping protrusions symmetrically arranged on the outer side of the clamp and clamping bosses arranged on the clamping protrusions.

6. The bendable and repeatedly openable hemostatic clip according to claim 1, characterized in that, The fixing pad has 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.

7. The bendable and repeatedly openable hemostatic clip according to claim 1, characterized in that, The bendable and repeatedly openable continuous hemostatic clip also includes a handle assembly, which includes a first handle and a second handle. The first handle is fixedly connected to the outer tube, and the second handle is fixedly connected to the pull rod assembly.

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