Hemostatic clamp
By setting the protrusion on the clamp arm of the hemostasis clip to contact the inner wall of the outer tube, the existing hemostasis clips have been solved by increasing the difficulty of opening and closing due to friction, achieving smoother clamp arm sliding and reducing wear.
Patent Information
- Application Number
- CN202421422448.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-06-20
AI Technical Summary
The existing hemostasis clamps increase the difficulty of opening and closing during sliding of the clamp arm and the outer tube due to friction and cause wear of the clamp arm.
During the sliding process of the clamp arm and the outer tube, by providing a protrusion on the outer side wall of the clamp arm to contact the inner wall of the outer tube, the contact area is reduced to reduce friction, and the sliding smoothness is further optimized through the arc-shaped protrusion.
The friction between the clamp arm and the outer tube is reduced, the smoothness of the clamp arm opening and closing is improved, and the wear of the clamp arm is reduced.
Smart Images
Figure CN223041571U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical devices, and particularly to a hemostatic clip. Background Art
[0002] A hemostatic clip is a medical device that uses mechanical clamping action to clamp a wound to achieve hemostasis, and has the characteristics of minimally invasive, rapid hemostasis, low probability of rebleeding and complications. The existing hemostatic clip generally includes an outer tube, two clip arms slidably inserted into the outer tube, and a driving rod for driving the sliding of the clip arms. By pushing and pulling the two clip arms with the driving rod, the two clip arms are received in the outer tube and relatively clamped during the sliding process, or separated from the outer tube and relatively opened.
[0003] However, for the existing hemostatic clip, the outer side walls of the two clip arms continuously contact and rub against the outer tube during the sliding process, which not only increases the difficulty of opening and closing the two clip arms, but also easily causes wear of the clip arms. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, this application provides a hemostatic clip that can reduce the friction between the clip arms and the outer tube.
[0005] A hemostatic clip provided by this application adopts the following technical solutions:
[0006] A hemostatic clip includes an outer tube, a clamping assembly and a driving assembly. The clamping assembly includes two clip arms that can be relatively opened or closed and are arranged at the end of the outer tube. The driving assembly is used to drive the two clip arms to move. One end of each clip arm is inserted into the outer tube and is slidably connected to the outer tube. Raised portions are respectively provided on the relatively remote sides of the two clip arms, and the raised portions are in contact with the inner wall of the outer tube.
[0007] By adopting the above technical solutions, during the relative sliding process of the clip arms and the outer tube, the outer side walls of the clip arms can contact the inner wall of the outer tube through the raised portions, reducing the contact area between the clip arms and the outer tube, thereby reducing the friction between the clip arms and the outer tube. This not only makes the opening and closing of the two clip arms smoother, but also reduces the wear of the clip arms.
[0008] In a specific feasible embodiment, the raised portion extends along the length direction of the clip arm, and the cross-section of the raised portion in the width direction is arc-shaped.
[0009] By adopting the above technical solutions, the clip arms can contact the inner wall of the outer tube through the raised portions throughout their entire sliding stroke, and the arc-shaped raised portions can further reduce the contact area between the clip arms and the outer tube.
[0010] In a specific feasible implementation, the clamping arms include a sliding part slidably inserted into the outer tube and a clamping part provided at one end of the sliding part away from the outer tube. On the relatively far - away sides of the two sliding parts, there are sliding surfaces respectively, and the convex part is provided on the sliding surface.
[0011] By adopting the above - mentioned technical solution, the sliding surface can contact the inner wall of the outer tube through the convex part, reducing the contact area between the sliding surface and the outer tube. Thus, the friction between the sliding surface and the outer tube can be reduced, not only making the sliding of the sliding part smoother, but also reducing the wear of the sliding part.
[0012] In a specific feasible implementation, the convex part is provided in the middle of the sliding surface and its width is less than the width of the sliding surface.
[0013] By adopting the above - mentioned technical solution, not only can the contact area between the sliding surface and the outer tube be further reduced, but also setting the convex part in the middle of the sliding surface can effectively ensure the balance of the two side parts of the sliding surface, avoiding the two side parts of the sliding surface from shifting and contacting the inner wall of the outer tube during the sliding process.
[0014] In a specific feasible implementation, on the relatively far - away sides of the two clamping parts, there are extension parts respectively, and the extension parts are integrally formed with the convex part.
[0015] By adopting the above - mentioned technical solution, it can be avoided that the clamping part contacts the inner wall of the outer tube during the sliding of the sliding part and causes wear.
[0016] In a specific feasible implementation, the two sliding parts are respectively curved and the bending directions of the two are opposite, and the convex part extends along the bending direction of the sliding part.
[0017] By adopting the above - mentioned technical solution, the two sliding parts can slide along their respective bending directions and open or close relatively, and the convex part can continuously contact the inner wall of the outer tube during the sliding of the sliding part and ensure the smooth sliding of the sliding part.
[0018] In a specific feasible implementation, the outer tube includes a receiving part and a handheld part. The two clamping arms are provided at one end of the receiving part away from the handheld part. The driving assembly includes a driving rod slidably penetrating through the handheld part, and one end of the driving rod penetrates into the receiving part and is connected to the two clamping arms.
[0019] By adopting the above - mentioned technical solution, a doctor can hold the handheld part and operate the two clamping arms on the receiving part through the driving rod.
[0020] In a specific feasible implementation, two connecting hooks are provided at the end of the driving rod, a connecting shaft is inserted through the ends of the two clamping arms, and the two connecting hooks are respectively hooked on both ends of the connecting shaft.
[0021] By adopting the above technical solution, the driving rod can synchronously drive the two clamping arms through the two connecting hooks, improving the clamping effect of the two clamping arms.
[0022] In a specific feasible implementation, the connecting hooks are deformably arranged, a connecting cylinder is provided at one end of the accommodating part close to the handheld part, and the connecting cylinder is inserted into the handheld part and detachably connected to the handheld part.
[0023] By adopting the above technical solution, both between the connecting hook and the connecting shaft and between the handheld part and the accommodating part can be conveniently separated, facilitating the doctor to leave the two clamping arms and the accommodating part in the patient's body after clamping.
[0024] In a specific feasible implementation, the hemostatic clip further includes a disassembling part and a sliding cylinder arranged in the handheld part. The disassembling part includes two V-shaped connected disassembling rods, the ends of the two disassembling rods are respectively connected to the inner wall of the handheld part, the sliding cylinder is sleeved on the driving rod and there is a gap between them, and one of the disassembling rods is slidably inserted through the gap.
[0025] By adopting the above technical solution, the disassembling part can pull the handheld part under the pressing of the sliding cylinder, facilitating the quick separation of the handheld part and the accommodating part.
[0026] In summary, the present application includes at least one of the following beneficial technical effects:
[0027] For the hemostatic clip of the present application, during the relative sliding of the clamping arms with the outer tube, the outer side wall of the clamping arms can contact the inner wall of the outer tube through the convex part, reducing the contact area between the clamping arms and the outer tube, thereby reducing the friction between the clamping arms and the outer tube. This not only enables the opening and closing of the two clamping arms to be smoother but also reduces the wear of the clamping arms. Description of the Drawings
[0028] Figure 1 is a schematic structural view of the hemostatic clip of the embodiment of the present application.
[0029] Figure 2 is Figure 1 an enlarged view of part A in
[0030] Figure 3 is Figure 1 a side view of
[0031] Figure 4 is Figure 3 an enlarged view of part B in
[0032] Figure 5 is Figure 3 The schematic C-C cross-sectional view in
[0033] Figure 6 is Figure 1 The schematic D-D cross-sectional view in
[0034] Figure 7 is Figure 6 The enlarged schematic view at position E in
[0035] Description of the reference numerals:
[0036] 1. Outer tube; 11. Receiving part; 12. Hand-held part; 13. Connecting cylinder; 2. Clamping assembly; 21. Clamping arm; 211. Sliding part; 2111. Sliding surface; 212. Clamping part; 3. Driving assembly; 31. Driving rod; 32. Connecting hook; 33. Connecting shaft; 4. Protrusion; 5. Extension part; 6. Dismantling part; 61. Dismantling rod; 7. Sliding cylinder. Detailed implementation manners
[0037] The present application will be further described in detail below with reference to the accompanying drawings.
[0038] Referring to Figures 1 - 7 as shown, there is shown a hemostatic clip including an outer tube 1, a clamping assembly 2 and a driving assembly 3. The clamping assembly 2 includes two clamping arms 21 that can be relatively opened or closed and are provided at the end of the outer tube 1. The driving assembly 3 is used to drive the two clamping arms 21 to move. One end of each clamping arm 21 is inserted into the outer tube 1 and is slidably connected to the outer tube 1. Protrusions 4 are respectively provided on the relatively remote sides of the two clamping arms 21, and the protrusions 4 are in contact with the inner wall of the outer tube 1.
[0039] When the above-mentioned hemostatic clip is in use, the two clamping arms 21 are driven to slide by the driving assembly 3. The two clamping arms 21 can be received in the outer tube 1 and relatively closed to clamp the wound of the patient, or separated from the outer tube 1 and relatively opened to loosen the wound. During the relative sliding of the clamping arms 21 and the outer tube 1, their outer side walls can contact the inner wall of the outer tube 1 through the protrusions 4, reducing the contact area between the clamping arms 21 and the outer tube 1, thereby reducing the friction between the clamping arms 21 and the outer tube 1. This not only enables the opening and closing of the two clamping arms 21 to be smoother, but also reduces the wear of the clamping arms 21.
[0040] In this embodiment, as shown in Figure 2 and Figure 4 the protrusions 4 extend along the length direction of the clamping arms 21, and the cross-section of the protrusions 4 in the width direction is arc-shaped. The clamping arms 21 can contact the inner wall of the outer tube 1 through the protrusions 4 throughout their entire sliding stroke, and the arc-shaped protrusions 4 can further reduce the contact area between the clamping arms 21 and the outer tube 1.
[0041] In this embodiment, the clamping arm 21 includes a sliding portion 211 slidably inserted into the outer tube 1, and a clamping portion 212 provided at one end of the sliding portion 211 away from the outer tube 1. On opposite sides of the two sliding portions 211 away from each other, there are respectively sliding surfaces 2111. The convex portion 4 is provided on the sliding surface 2111. The convex portion 4 is provided in the middle of the sliding surface 2111 and its width is smaller than the width of the sliding surface 2111.
[0042] The sliding surface 2111 can contact the inner wall of the outer tube 1 through the convex portion 4, reducing the contact area between the sliding surface 2111 and the outer tube 1. Thus, the friction between the sliding surface 2111 and the outer tube 1 can be reduced, not only making the sliding of the sliding portion 211 smoother, but also reducing the wear of the sliding portion 211. At the same time, the narrower convex portion 4 can further reduce the contact area between the sliding surface 2111 and the outer tube 1, and arranging the convex portion 4 in the middle of the sliding surface 2111 can effectively ensure the balance of both sides of the sliding surface 2111, preventing both sides of the sliding surface 2111 from shifting and contacting the inner wall of the outer tube 1 during the sliding process.
[0043] In this embodiment, on opposite sides of the two clamping portions 212 away from each other, there are respectively provided extension portions 5, and the extension portions 5 are integrally formed with the convex portion 4. When the clamping portion 212 reaches the end of the outer tube 1, the extension portion 5 can abut against the inner wall of the outer tube 1, preventing the clamping portion 212 from contacting the inner wall of the outer tube 1 and causing wear during the sliding of the sliding portion 211.
[0044] In this embodiment, as Figure 1 shown, the two sliding portions 211 are respectively bent, and the bending directions of the two are opposite. The convex portion 4 extends along the bending direction of the sliding portion 211. The two sliding portions 211 can slide along their respective bending directions and open or close relative to each other, and the convex portion 4 can continuously contact the inner wall of the outer tube 1 during the sliding of the sliding portion 211 and ensure smooth sliding of the sliding portion 211.
[0045] In this embodiment, as Figure 5 shown, the outer tube 1 includes a receiving portion 11 and a hand-held portion 12 arranged coaxially. The two clamping arms 21 are provided at one end of the receiving portion 11 away from the hand-held portion 12. The driving assembly 3 includes a driving rod 31 slidable along its own axial direction and inserted into the hand-held portion 12. One end of the driving rod 31 penetrates into the receiving portion 11 and is connected to the two clamping arms 21.
[0046] At the end of the driving rod 31, there are two connecting hooks 32. The ends of the two clamping arms 21 are provided with a connecting shaft 33, and the two connecting hooks 32 are respectively hooked on both ends of the connecting shaft 33.
[0047] When in use, the driving rod 31 can synchronously drive the two clamping arms 21 through the two connecting hooks 32, improving the clamping effect of the two clamping arms 21.
[0048] In this embodiment, as Figures 6 - 7 shown, the connecting hook 32 is deformably arranged. One end of the accommodating part 11 close to the handheld part 12 is provided with a connecting cylinder 13. The connecting cylinder 13 is inserted into the handheld part 12 and is detachably connected to the handheld part 12. The connecting cylinder 13 and the handheld part 12 are in interference fit. The hemostatic clip further includes a disassembling part 6 and a sliding cylinder 7 arranged in the handheld part 12. The disassembling part 6 includes two disassembling rods 61 connected in a V shape. The end parts of the two disassembling rods 61 are respectively connected to the inner wall of the handheld part 12. The sliding cylinder 7 is sleeved on the driving rod 31 and there is a gap between them. One of the disassembling rods 61 is slidably inserted through the gap.
[0049] After the two clamping arms 21 are clamped, the connecting hook 32 and the connecting shaft 33, as well as the handheld part 12 and the accommodating part 11, can be easily separated, facilitating the doctor to leave the two clamping arms 21 and the accommodating part 11 in the patient's body; and the disassembling part 6 can pull the handheld part 12 under the pressing of the sliding cylinder 7, facilitating the quick separation of the handheld part 12 and the connecting cylinder 13.
[0050] The implementation principle of a hemostatic clip according to an embodiment of the present application is as follows:
[0051] Insert the outer tube 1 into the patient's body, and then push the driving rod 31. The two sliding parts 211 penetrate out of the outer tube 1 and drive the two clamping parts 212 to open relatively. During the process of the two sliding parts 211 penetrating out of the outer tube 1, the convex part 4 continuously abuts against the inner wall of the outer tube 1;
[0052] Align the two clamping parts 212 with the wound in the patient's body, and then pull the driving rod 31. The two sliding parts 211 are accommodated in the outer tube 1 and drive the two clamping parts 212 to close relatively, realizing the clamping of the wound;
[0053] Then continue to pull the driving rod 31. The connecting hook 32 deforms under the pulling of the driving rod 31 and disengages from the connecting shaft 33;
[0054] Then continue to pull the driving rod 31. The sliding cylinder 7 slides along with the driving rod 31 and reaches the bottom of the disassembling rod 61 and presses the disassembling rod 61. The disassembling rod 61 pulls the handheld part 12 under the pressing of the sliding cylinder 7. The handheld part 12 is separated from the accommodating part 11 under the pulling of the disassembling rod 61;
[0055] Then take out the handheld part 12, and the accommodating part 11 and the two clamping arms 21 are left in the patient's body.
[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A hemostatic clip, comprising an outer tube (1), a clamping assembly (2) and a driving assembly (3), wherein the clamping assembly (2) comprises two clamping arms (21) which can be relatively opened or closed and are arranged at the ends of the outer tube (1), and the driving assembly (3) is used to drive the two clamping arms (21) to move, characterized in that: One end of the clamp arm (21) is inserted into the outer tube (1) and is slidably connected to the outer tube (1), and a protrusion (4) is provided on one side of the two clamp arms (21) that is relatively far away from each other, and the protrusion (4) is in contact with the inner wall of the outer tube (1).
2. A hemostatic clip according to claim 1, characterized in that: The raised portion (4) extends along the length direction of the clamp arm (21), and the cross section of the raised portion (4) in the width direction is in the shape of an arc.
3. A hemostatic clip according to claim 1 or 2, characterized in that: The clamp arm (21) comprises a sliding portion (211) slidably inserted into the outer tube (1), and a clamping portion (212) arranged at one end of the sliding portion (211) away from the outer tube (1), and the two side portions of the sliding portions (211) that are relatively far away from each other respectively have sliding surfaces (2111), and the protrusion (4) is arranged on the sliding surface (2111).
4. A hemostatic clip according to claim 3, characterized in that: The protrusion (4) is arranged in the middle of the sliding surface (2111) and its width is smaller than the width of the sliding surface (2111).
5. A hemostatic clip according to claim 3, characterized in that: An extension portion (5) is provided on one side of the two clamping portions (212) which is relatively far away from each other, respectively. The extension portion (5) is integrally formed with the protruding portion (4).
6. A hemostatic clip according to claim 3, characterized in that: The two sliding parts (211) are respectively curved and have opposite curvature directions, and the protruding part (4) extends along the curvature direction of the sliding parts (211).
7. A hemostatic clip according to claim 1 or 2, characterized in that: The outer tube (1) comprises a receiving portion (11) and a hand-held portion (12); the two clamping arms (21) are arranged at one end of the receiving portion (11) away from the hand-held portion (12); the driving assembly (3) comprises a driving rod (31) slidably inserted into the hand-held portion (12); one end of the driving rod (31) penetrates into the receiving portion (11) and is connected to the two clamping arms (21).
8. A hemostatic clip according to claim 7, characterized in that: Two connecting hooks (32) are provided at the end of the driving rod (31), and connecting shafts (33) are passed through the ends of the two clamping arms (21), and the two connecting hooks (32) are respectively hooked on the two ends of the connecting shaft (33).
9. A hemostatic clip according to claim 8, characterized in that: The connecting hook (32) is deformably arranged, and a connecting tube (13) is arranged at one end of the receiving portion (11) close to the hand-held portion (12); the connecting tube (13) is inserted into the hand-held portion (12) and is detachably connected to the hand-held portion (12).
10. The hemostatic clip according to claim 9, characterized in that: The hemostatic clamp also includes a disassembly component (6) and a slide tube (7) disposed in the hand-held portion (12); the disassembly component (6) includes two V-shaped disassembly rods (61); the ends of the two disassembly rods (61) are respectively connected to the inner wall of the hand-held portion (12); the slide tube (7) is sleeved on the driving rod (31) with a gap therebetween, and one of the disassembly rods (61) can be slidably inserted into the gap.