Reinforced tong head and clip applier applying same
By strengthening the spine and centering structure in the clamp head design of the clamping forceps, the problem of unstable closure of the ligation clip was solved, achieving stable and efficient clamping of the ligation clip and ensuring the safety of the surgical procedure.
Patent Information
- Application Number
- CN202422791412.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-15
AI Technical Summary
Existing clamping forceps have problems with unstable closure, partial closure, or no closure when used with ligation clips, which may lead to medical accidents caused by clip detachment and affect the safety and progress of surgical procedures.
A reinforced clamp head is designed by providing a reinforcing ridge at the bottom of the receiving groove and setting a centering structure between the inner sides of the clamp head arms, ensuring that the clamp arms of the ligation clamp can close easily, stably, accurately, and efficiently, preventing misalignment.
It effectively solves the problems of unstable, incomplete, or non-closed ligation clip closure, eliminates the risk of clip detachment, and ensures the safety and progress of the surgical procedure.
Smart Images
Figure CN223529490U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a reinforced forceps head and a clamping forceps using the same. Background Technology
[0002] In surgical procedures, to fully expose the surgical field and facilitate the operation of medical personnel, it is necessary to ligate ruptured blood vessels within the incision to stop bleeding. Currently, commonly used vascular closure instruments include ligation clips and hemostatic forceps. Among them, ligation clips are widely used in surgical procedures due to their advantages such as small size, ease of use, and good hemostatic effect. When using ligation clips, they need to be used in conjunction with clipping forceps. First, the clipping forceps hold the ligation clip in place and extend it from the surgical incision to the surgical site where the clamping operation needs to be performed. Then, the clipping forceps are used to operate and control the ligation clip so that the two clamping arms of the ligation clip clamp and close the blood vessel or tissue.
[0003] Existing clamping forceps typically have grooves on opposite sides of the two forceps arms to accommodate the clamping arms of a ligation clip, and corresponding slots on the side walls of these grooves to engage with the protruding ends of the limiting posts on the ligation clip, thus achieving limiting and clamping of the ligation clip. However, existing clamping forceps suffer from problems such as unstable closure, partial closure, or incomplete closure when used with ligation clips. This necessitates repeated clamping during surgery, and unstable closure can even lead to clip dislodgement, causing medical accidents and seriously affecting the surgical process and safety. Therefore, this invention proposes a reinforced forceps head and clamping forceps using it to solve the aforementioned technical problems. Summary of the Invention
[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a reinforced clamp head and a clamping forceps using the same. By providing a reinforcing ridge at the bottom of the receiving groove, corresponding to the lugs on both sides, when the reinforced clamp head clamps the two arms of the ligation clip to close and tighten the vascular tissue, the reinforcing ridge applies pressure and strengthens the corresponding position of the clamp arm on the ligation clip and the limiting post. Simultaneously, a matching centering structure is provided between a set of facing inner surfaces of the two clamp arms. When the reinforced clamp head clamps the two arms of the ligation clip to close and tighten the vascular tissue, the centering structure provides alignment, effectively preventing misalignment between the two clamp arms. This ensures that the two arms of the ligation clip can close easily, stably, accurately, and efficiently, solving the problems of unstable ligation clip closure, partial closure, or incomplete closure, and the need for repeated clamping. It also eliminates the potential medical accident risk of ligation clip detachment due to poor clamping, ensuring the progress and safety of the surgical procedure.
[0005] One objective of this invention is to design a reinforced clamp head adapted to a ligation clip, comprising two movably hinged clamp arms. A set of facing inner surfaces of the two clamp arms has a receiving groove extending along its length, the receiving groove accommodating the clamp arm of the ligation clip. Lugs are located on the groove walls near the front opening of the receiving grooves on both sides, each lug having a corresponding slot, which is adapted to a limiting post at the front opening of the clamp arm of the ligation clip. The invention is characterized by a reinforcing ridge at the bottom of the receiving groove corresponding to the lugs on both sides; and a matching centering structure between the facing inner surfaces of the two clamp arms.
[0006] This invention discloses a reinforced clamp head. A reinforcing ridge is provided at the bottom of the receiving groove, corresponding to the lugs on both sides. When the reinforced clamp head clamps the two arms of the ligation clip to close and tighten the vascular tissue, the reinforcing ridge applies pressure to the corresponding position of the clamp arm and the limiting post on the ligation clip. Simultaneously, a matching centering structure is provided between a set of facing inner surfaces of the two clamp arms. When the reinforced clamp head clamps the two arms of the ligation clip to close and tighten the vascular tissue, the centering structure provides alignment, effectively preventing misalignment between the two clamp arms. This ensures that the two arms of the ligation clip can close easily, stably, accurately, and efficiently, solving the problems of unstable ligation clip closure, partial closure, or incomplete closure, and the need for repeated clamping. It also eliminates the potential medical malpractice risk of ligation clip detachment due to poor clamping, ensuring the progress and safety of the surgical procedure.
[0007] The preferred technical solution is that the centering structure includes a matching centering boss and a centering groove. The centering boss is located on one of the two clamp arms, and the centering groove is located on the other of the two clamp arms. The centering structure has an ingenious and reasonable structural design, high feasibility in manufacturing and implementation, and ensures the stability and efficiency of the reinforced clamp head when closing and clamping the ligation clip.
[0008] A further preferred technical solution is that the rear ends of the two clamp arms are widened to one side, and the centering boss and centering groove are located at the widened position of the corresponding clamp arm's rear end; the centering boss is one of a circular frustum, a polygonal frustum, or a hemispherical boss, and the smaller end of the centering boss faces away from the side of its clamp arm. The widening of the rear ends of the clamp arms ensures sufficient strength at the rear ends, and the centering structure, located at the widened position of the clamp arms, further ensures that when the reinforced clamp clamp is closed, the centering boss and centering groove can quickly, stably, and efficiently engage together.
[0009] A preferred technical solution is that the reinforcing ridge is located between the two slots, and when the reinforced clamp head holds the ligation clip, the reinforcing ridge is in line contact with the outer surface of the corresponding clamp arm. When the reinforced clamp head closes the ligation clip, the reinforcing ridge located between the two slots can exert greater pressure on the outer surface of the corresponding clamp arm on the ligation clip, corresponding to the position of the limiting post, thereby ensuring that the clamping forceps close the ligation clip more easily, stably, and efficiently.
[0010] A further preferred technical solution is that the cross-section of the reinforcing ridge is one of a rectangular, trapezoidal, or arc-shaped convex surface, with the smaller end face of the trapezoid facing away from the side of the clamp arm. The reinforcing ridge structure has diverse designs, and all upper surfaces are convex. When the clamping forceps close the ligation clip, the upper end face of the reinforcing ridge can quickly form a stable line contact with the corresponding outer surface of the clamp arm on the ligation clip, thereby further ensuring the high efficiency of the clamping forceps when closing the ligation clip.
[0011] A further preferred technical solution is that the slot is an arc-shaped slot, with its opening inclined towards the front end of the clamp arm, and the central angle corresponding to the arc-shaped inner wall of the slot is set as α, where the value of α ranges from 180 to 240°. The slot is an arc-shaped slot with its opening inclined towards the front end of the clamp arm, and the central angle of the arc-shaped inner wall of the slot is 180 to 240°. This ensures that when the reinforced clamp head grasps the ligation clip, the limiting posts on both sides of the ligation clip can quickly and stably engage in the corresponding slots, guaranteeing the high efficiency of the reinforced clamp head in grasping and installing the ligation clip. Simultaneously, when the ligation clip is closed and the reinforced clamp head opens and retracts, the limiting posts on the ligation clip can smoothly disengage from the corresponding slots.
[0012] A further preferred technical solution is that the upper end face of the reinforcing ridge is designed as a concave arc-shaped structure with a lower front and a higher rear. When the reinforced clamp head holds the ligation clip, the front side of the upper end face of the reinforcing ridge can form a linear contact position one with the outer side of the corresponding clamp arm, and / or the rear side of the upper end face of the reinforcing ridge can form a linear contact position two with the outer side of the corresponding clamp arm. When both linear contact position one and linear contact position two are in contact, the height difference between linear contact position two and linear contact position one is set as d, and the value of d ranges from 0.1 to 0.5 mm. The upper end face of the reinforcing ridge is designed as a concave arc-shaped structure with a lower front and a higher rear, so that when the clamping forceps close the ligation clip, the upper end face of the reinforcing ridge can quickly form a stable linear contact position one and / or linear contact position two with the outer side of the corresponding clamp arm on the ligation clip, further ensuring the efficiency and stability of the clamping forceps when closing the ligation clip.
[0013] Further preferred technical solutions include: a guide surface is provided on the side of the reinforcing ridge facing the front end of the pliers head opening; the guide surface is either an arc-shaped transition surface or an inclined surface; both ends of the slot are provided with an arc-shaped rounded corner structure; and the inner wall surface of the slot is provided with a continuous or discontinuous toothed structure. When the clamping forceps close the ligation clip, the guide surface on the reinforced ridge guides the limiting post on the ligation clip, and both ends of the slot are designed with rounded corners to ensure that the limiting post can slide quickly and stably into the corresponding slot, thus ensuring the efficiency of the clamping forceps when grasping the ligation clip. The guide surface also provides a clearance function for the hook-shaped buckle structure at the ends of the two clamping arms on the ligation clip, allowing the two clamping arms of the ligation clip to slide quickly into the corresponding receiving slots on the clamping head when the clamping forceps grasp the ligation clip, which helps to improve the efficiency of the clamping forceps when grasping the ligation clip. The inner wall surface of the slot is designed with a continuous or intermittent toothed structure, which helps to improve the clamping stability of the slot on the upper limiting post of the ligation clip, thereby effectively preventing the ligation clip from slipping off the clamping head and ensuring the stability and safety of the clamping forceps when closing the ligation clip.
[0014] A further preferred technical solution is that the left and right ends of the reinforcing ridge have intermittent grooves between them and the corresponding groove walls. During the clamping process of the clamping forceps, the intermittent grooves can avoid the chamfered transition surface at the connection between the upper limit post of the clamping arm and the clamping arm, further ensuring that the two clamping arms of the clamping clip can be smoothly and quickly slid into the corresponding receiving grooves on the clamping head arm without displacement or tilting.
[0015] The second objective of this utility model is to provide a clamping pliers, including the aforementioned reinforced pliers head.
[0016] This utility model discloses a clamping forceps that uses the aforementioned reinforced forceps head. When the two clamping arms of the ligation clip close and tighten the vascular tissue, the centering structure plays an aligning role, effectively preventing misalignment between the two clamping arms. This ensures that the two clamping arms of the ligation clip can close easily, stably, accurately, and efficiently, solving the problems of unstable ligation clip closure, partial closure, or incomplete closure, as well as the need for repeated clamping. At the same time, it eliminates the potential medical accident risk of ligation clip detachment due to poor clamping, ensuring the progress and safety of the surgical procedure.
[0017] The advantages and beneficial effects of this utility model are as follows:
[0018] 1. This utility model discloses a reinforced clamp head. A reinforcing ridge is provided at the bottom of the receiving groove, corresponding to the two protruding blocks on both sides. When the reinforced clamp head clamps the two arms of the ligation clip to close and tighten the vascular tissue, the reinforcing ridge applies pressure to the corresponding position of the clamp arm on the ligation clip and the limiting post. Simultaneously, a matching centering structure is provided between a set of facing inner surfaces of the two clamp arms. When the reinforced clamp head clamps the two arms of the ligation clip to close and tighten the vascular tissue, the centering structure provides alignment, effectively preventing misalignment between the two clamp arms. This ensures that the two arms of the ligation clip can close easily, stably, accurately, and efficiently, solving the problems of unstable ligation clip closure, partial closure, or incomplete closure, and the need for repeated clamping. It also eliminates the potential medical malpractice risk of ligation clip detachment due to poor clamping, ensuring the progress and safety of the surgical procedure.
[0019] 2. The ingenious and reasonable structural design of the centering structure and the high feasibility of its fabrication and implementation ensure the stability and efficiency of the reinforced clamp head when closing and clamping the ligation clamp.
[0020] 3. The rear end of the pliers arm is widened to one side to ensure that the rear end of the pliers arm has sufficient strength, and the centering structure is set at the widened position of the pliers arm to further ensure that when the reinforced pliers clamp the ligation clamp closed, the centering boss and the centering groove can be quickly, stably and efficiently inserted together.
[0021] 4. The reinforcing ridge is located between the two slots. When the reinforced clamp head holds the ligation clip, the reinforcing ridge is in line contact with the outer surface of the corresponding clamp arm. When the reinforced clamp head closes the ligation clip, the reinforcing ridge located between the two slots can exert greater pressure on the outer surface of the corresponding clamp arm on the ligation clip, corresponding to the position of the limiting post, thereby ensuring that the clamping clamp closes the ligation clip more easily, stably, and efficiently.
[0022] 5. The reinforcing ridge has a cross-section that is rectangular, trapezoidal, or convex, with the smaller end face of the trapezoid facing away from the clamp arm. The reinforcing ridge has a variety of structural designs, and all its upper surfaces are convex. When the clamping forceps close the ligation clip, the upper surface of the reinforcing ridge can quickly form a stable line contact with the corresponding outer side of the clamp arm on the ligation clip, thereby further ensuring the high efficiency of the clamping forceps when closing the ligation clip.
[0023] 6. The slot is designed as an arc-shaped slot with the opening tilted towards the front end of the clamp head arm, and the central angle of the arc-shaped inner wall of the slot is 180-240°. This allows the limiting posts on both sides of the ligation clip to quickly and stably engage in the corresponding slot when the reinforced clamp head grips the ligation clip, ensuring the high efficiency of the reinforced clamp head when gripping and installing the ligation clip. At the same time, when the ligation clip is closed and the reinforced clamp head opens and retracts, the limiting posts on the ligation clip can smoothly disengage from the corresponding slot.
[0024] 7. The upper end face of the reinforced spine is designed as an arc-shaped concave structure with a lower front and a higher back. This allows the upper end face of the reinforced spine to quickly form a stable linear contact position one and / or a linear contact position two with the corresponding outer side of the clamp arm on the ligation clip when the clamp is applied. This further ensures the efficiency and stability of the clamp when the clamp is applied.
[0025] 8. When the clamping forceps close the ligation clip, the guide surface on the reinforced ridge guides the limiting post on the ligation clip, and both ends of the slot are designed with rounded corners to ensure that the limiting post can slide quickly and stably into the corresponding slot, ensuring the efficiency of the clamping forceps when grasping the ligation clip. The guide surface also provides a clearance function for the hook-shaped buckle structure at the ends of the two clamping arms on the ligation clip, allowing the two clamping arms of the ligation clip to slide quickly into the corresponding receiving slots on the clamping head arm when the clamping forceps grasp the ligation clip, which helps to improve the efficiency of the clamping forceps when grasping the ligation clip. The inner wall surface of the slot is designed with a continuous or intermittent toothed structure, which helps to improve the locking stability of the slot to the upper limiting post of the ligation clip, thereby effectively preventing the ligation clip from slipping off the clamping head and ensuring the stability and safety of the clamping forceps when closing the ligation clip.
[0026] 9. Intermittent grooves are left between the left and right ends of the reinforcing ridge and the corresponding groove walls. During the clamping process of the clamping forceps, the intermittent grooves can avoid the chamfered transition surface at the connection between the upper limit post of the clamping arm and the clamping arm, further ensuring that the two clamping arms of the clamping forceps can be smoothly and quickly slid into the corresponding receiving grooves on the clamping head arm without displacement or tilting.
[0027] 10. The clamp of this utility model adopts the above-mentioned reinforced clamp head. When the two clamp arms of the ligation clamp close and tighten the blood vessel tissue, the centering structure plays an aligning role, effectively preventing misalignment between the two clamp arms. This ensures that the two clamp arms of the ligation clamp can close easily, stably, accurately, and efficiently. It solves the problems of unstable ligation clamp closure, partial closure, or incomplete closure, as well as the need for repeated clamping. At the same time, it eliminates the medical accident risk of ligation clamp detachment caused by poor clamping, ensuring the progress and safety of the surgical operation. Attached Figure Description
[0028] Figure 1This is a three-dimensional structural diagram of the jaw arm of a reinforced pliers head in Embodiment 1;
[0029] Figure 2 This is a three-dimensional structural diagram of the jaw arm of a reinforced pliers head in Embodiment 2;
[0030] Figure 3 This is a three-dimensional structural diagram of the jaw arm of a reinforced pliers head in Embodiment 3;
[0031] Figure 4 This is a three-dimensional structural diagram of the jaw arm of a reinforced pliers head in Embodiment 4;
[0032] Figure 5 This is a longitudinal cross-sectional view of the jaw arm of a reinforced jaw in Embodiment 1;
[0033] Figure 6 yes Figure 5 A magnified view of a section at point H in the middle;
[0034] Figure 7 This is a longitudinal cross-sectional view of the front end of the pliers arm in Embodiment 5.
[0035] Figure 8 This is a longitudinal cross-sectional view of the front end of the pliers arm of a reinforced pliers head in Embodiment 6;
[0036] Figure 9 This is a longitudinal cross-sectional view of the front end of the pliers arm of a reinforced pliers head in Embodiment 7;
[0037] Figure 10 This is a longitudinal cross-sectional view of the front end of the pliers arm of a reinforced pliers head in Embodiment 8;
[0038] Figure 11 This is a longitudinal cross-sectional view of the front end of the pliers arm in Embodiment 9.
[0039] Figure 12 This is a longitudinal cross-sectional view of the front end of the pliers arm of a reinforced pliers head in Embodiment 10;
[0040] Figure 13 This is a longitudinal cross-sectional view of the front end of the pliers arm in Embodiment 11.
[0041] Figure 14 This is a top view of the jaw arm of a reinforced pliers head in Embodiment 12;
[0042] Figure 15 yes Figure 14 A magnified view of a section at point S in the middle;
[0043] Figure 16 This is a longitudinal sectional view of a reinforced pliers head in use, as shown in Embodiment 1.
[0044] Figure 17 This is a longitudinal sectional view of a reinforced pliers head in use, as shown in Embodiment 7.
[0045] Figure 18 This is a schematic diagram of the structure of a clamp in Example 13.
[0046] In the diagram: 100, clamp arm; 200, clamp bar; 300, rotating wheel; 400, handle; 500, trigger; 600, ligation clamp; 101, receiving groove; 102, groove wall; 103, lug block; 104, slot; 105, guide surface; 106, linear contact position one; 107, linear contact position two; 108, reinforcing ridge; 109, centering boss; 110, interrupted groove; 601, clamp arm; 602, limiting post. Detailed Implementation
[0047] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.
[0048] Example 1
[0049] like Figure 1 , 5 As shown in Figure 6, this utility model is a reinforced clamp head adapted to a ligation clip 600. It includes two clamp head arms 100 that are movably hinged together. A set of inner surfaces of the two clamp head arms 100 facing each other are provided with a receiving groove 101 extending along the length direction. The receiving groove 101 is used to receive the clamp arm 601 of the ligation clip 600. The groove walls 102 on both sides of the receiving groove 101 are provided with lugs 103 near the front end of the opening. The lugs 103 are provided with slots 104. The slots 104 on the lugs 103 on both sides correspond to each other and are adapted to the limiting post 602 at the front end of the opening of the clamp arm 601 of the ligation clip 600. The bottom of the receiving groove 101 is provided with a reinforcing ridge 108 corresponding to the lugs 103 on both sides. A matching centering structure is provided between the set of inner surfaces of the two clamp head arms 100 facing each other.
[0050] Preferably, the centering structure includes a matching centering boss 109 and a centering groove, wherein the centering boss 109 is located on one of the two jaw arms 100, and the centering groove is located on the other of the two jaw arms 100.
[0051] More preferably, the rear ends of the two jaw arms 100 are widened to one side, and the centering boss 109 and the centering groove are located at the widened position of the rear end of the corresponding jaw arm 100; the centering boss 109 is a circular cone, and the smaller end of the centering boss 109 faces away from the side of the jaw arm 100; the centering groove is a circular cone groove structure adapted to the centering boss 109.
[0052] Preferably, the reinforcing ridge 108 is located between the two slots 104 on both sides, and when the reinforced clamp head holds the ligation clip 600, the reinforcing ridge 108 is in line contact with the outer side of the corresponding clamp arm 601.
[0053] More preferably, the cross-section of the reinforcing ridge 108 is rectangular.
[0054] More preferably, the slot 104 is an arc-shaped slot, with its opening inclined toward the front end of the clamp arm 100, and the central angle corresponding to the arc-shaped inner wall surface of the slot 104 is set as α, then the value range of α is 180 to 240°.
[0055] More preferably, the upper surface of the reinforcing ridge 108 is a concave arc-shaped structure that is lower in the front and higher in the back. When the reinforcing clamp head holds the ligation clip 600, the front side of the upper surface of the reinforcing ridge 108 and the outer side of the corresponding clamping arm 601 can form a linear contact position 106, and / or the rear side of the upper surface of the reinforcing ridge 108 and the outer side of the corresponding clamping arm 601 can form a linear contact position 107. When both the linear contact position 106 and the linear contact position 107 are in contact, the height difference between the linear contact position 107 and the linear contact position 106 is set as d, and the value range of d is 0.1 to 0.5 mm.
[0056] More preferably, the reinforcing ridge 108 has a guide surface 105 on the side facing the front end of the pliers head opening, and the guide surface 105 is an arc-shaped transition surface; both ends of the slot 104 are provided with an arc-shaped rounded corner structure.
[0057] More preferably, the two clamp arms 100 are arranged in a mirror symmetrical manner, and the rear ends of the two clamp arms 100 are provided with staggered hinge mounting parts, the hinge mounting parts being provided with positioning shaft holes and sliding pin holes.
[0058] Example 2
[0059] like Figure 2 As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that the centering boss 109 is a hemispherical boss, and the centering groove is a semi-circular groove structure that matches the centering boss 109.
[0060] Example 3
[0061] like Figure 3 As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that the centering boss 109 is a frustum structure with a triangular cross-section, and the centering groove is a groove structure with a triangular cross-section that is adapted to the centering boss 109.
[0062] Example 4
[0063] like Figure 4 As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that the centering boss 109 is a truncated cone structure with a quadrilateral cross section, and the centering groove is a groove structure with a quadrilateral cross section that is adapted to the centering boss 109.
[0064] Example 5
[0065] like Figure 7 As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that the cross-section of the reinforcing ridge 108 is trapezoidal, and the small end face of the trapezoid faces away from the pliers head arm 100.
[0066] Preferably, the reinforcing ridge 108 has a guide surface 105 on the side facing the front end of the pliers opening, and the guide surface 105 is an inclined surface.
[0067] Example 6
[0068] like Figure 8 As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that the cross-section of the reinforcing ridge 108 is an arc-shaped convex structure.
[0069] Example 7
[0070] like Figure 9 As shown, this utility model is a reinforced pliers head, and the reinforcing ridge 108 is an arc-shaped transition convex surface structure formed by the upward curving of the bottom front end of the receiving groove 101.
[0071] Example 8
[0072] like Figure 10 As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that the inner wall surface of the slot 104 is set as an intermittent tooth-like structure surface, which is formed by several intermittent trapezoidal teeth connected end to end.
[0073] Example 9
[0074] like Figure 11As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that the inner wall surface of the slot 104 is set as an intermittent tooth-like structure surface, which is formed by several intermittent arc-shaped protrusions connected end to end.
[0075] Example 10
[0076] like Figure 12 As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that the inner wall surface of the slot 104 is set as a continuous toothed structure surface, which is formed by several continuous trapezoidal teeth connected end to end.
[0077] Example 11
[0078] like Figure 13 As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that the inner wall surface of the slot 104 is set as a continuous toothed structure surface, which is formed by several continuous arc-shaped protrusions connected end to end.
[0079] Example 12
[0080] like Figure 14 and 15 As shown, this utility model is a reinforced pliers head. The difference between it and the pliers head in Embodiment 1 is that there are intermittent grooves 110 between the left and right ends of the reinforcing ridge 108 and the corresponding groove wall 102.
[0081] Example 13
[0082] like Figure 18 As shown, this utility model is a clamp, including a clamp bar 200. The front end of the clamp bar 200 is equipped with the reinforced clamp head described in embodiments 1 to 12 above, and the rear end of the clamp bar 200 is equipped with a rotating wheel 300, a handle 400 and a trigger 500.
[0083] In use, the reinforced pliers head and the clamping pliers thereof of this utility model are first used to clamp the ligation clip 600, that is, the two clamping arms 601 of the ligation clip 600 are installed in the corresponding receiving grooves 101 of the two pliers head arms 100. The limiting post 602 slides into the corresponding slot 104 after being guided by the guide surface 105 on the reinforcing ridge 108. The trigger 500 is pulled by hand to drive the two clamping arms 100 to close the two clamping arms 601. The reinforcing ridge 108 and the corresponding outer surface of the clamping arm 601 on one side are in line contact with the limiting post 602 (see Appendix). Figure 16Or 17), thereby ensuring that the two clamping arms 601 of the ligation clip 600 can close together easily, stably, accurately and efficiently; after the two clamping arms 601 of the ligation clip 600 are closed and clamped, the trigger 500 is released, and the reset mechanism inside the clamp bar 200 drives the two clamping arms 100 to open and retract, and the limiting post 602 on the ligation clip 600 can smoothly disengage from the corresponding slot 104, completing the clamping operation of the ligation clip 600.
[0084] This invention relates to a reinforced clamp head and a clamping device using the same. A reinforcing ridge is provided at the bottom of the receiving groove, corresponding to the lugs on both sides. When the reinforced clamp head clamps the two arms of the ligation clip and closes to clamp the vascular tissue, the reinforcing ridge applies pressure to the corresponding arms of the ligation clip and the corresponding positioning post. Simultaneously, a matching centering structure is provided between a set of facing inner surfaces of the two clamp arms. When the reinforced clamp head clamps the two arms of the ligation clip and closes to clamp the vascular tissue, the centering structure provides alignment, effectively preventing misalignment between the two clamp arms. This ensures that the two arms of the ligation clip can close easily, stably, accurately, and efficiently, solving the problems of unstable ligation clip closure, partial closure, or incomplete closure, and the need for repeated clamping. It also eliminates the potential medical malpractice risk of ligation clip detachment due to poor clamping, ensuring the smooth progress and safety of the surgical procedure.
[0085] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A reinforced clamp head, adapted to a ligation clip (600), comprising two clamp head arms (100) movably hinged together, wherein a set of facing inner surfaces of the two clamp head arms (100) are provided with receiving grooves (101) extending along the length direction, the receiving grooves (101) being used to receive the clamp arms (601) of the ligation clip (600); the groove walls (102) on both sides of the receiving grooves (101) are provided with lugs (103) near the front end of the opening, the lugs (103) being provided with slots (104), the slots (104) on the lugs (103) on both sides corresponding to each other and adapted to the limiting post (602) at the front end of the opening of the clamp arm (601) of the ligation clip (600), characterized in that, The bottom of the receiving groove (101) is provided with a reinforcing ridge (108) corresponding to the lugs (103) on both sides; a matching centering structure is provided between a set of facing inner sides of the two clamp arms (100).
2. The reinforced pliers head as described in claim 1, characterized in that, The centering structure includes a matching centering boss (109) and a centering groove, wherein the centering boss (109) is located on one of the two jaw arms (100) and the centering groove is located on the other of the two jaw arms (100).
3. The reinforced pliers head as described in claim 2, characterized in that, The rear ends of the two jaw arms (100) are widened to one side, and the centering boss (109) and centering groove are located at the widened position of the rear end of the corresponding jaw arm (100); the centering boss (109) is one of a circular frustum, a polygonal frustum, or a hemispherical boss, and the small end of the centering boss (109) faces away from the side of the jaw arm (100).
4. The reinforced pliers head as described in claim 1, characterized in that, The reinforcing ridge (108) is located between the two slots (104). When the reinforced clamp head holds the ligation clip (600), the reinforcing ridge (108) is in line contact with the outer side of the corresponding clamp arm (601).
5. The reinforced pliers head as described in claim 4, characterized in that, The cross-section of the reinforcing ridge (108) is one of a rectangle, trapezoid, or arc convex surface, and the small end face of the trapezoid faces away from the side of the clamp arm (100).
6. The reinforced pliers head as described in claim 1, characterized in that, The slot (104) is an arc-shaped slot with its opening inclined toward the front end of the clamp arm (100). The central angle corresponding to the arc-shaped inner wall of the slot (104) is set as α, and the value range of α is 180 to 240°.
7. The reinforced pliers head as described in claim 4, characterized in that, The upper surface of the reinforcing ridge (108) is designed as an arc-shaped concave structure with a lower front and a higher rear. When the reinforcing clamp head holds the ligation clamp (600), the front side of the upper surface of the reinforcing ridge (108) and the outer side of the corresponding clamp arm (601) can form a linear contact position one (106), and / or the rear side of the upper surface of the reinforcing ridge (108) and the outer side of the corresponding clamp arm (601) can form a linear contact position two (107). When both the linear contact position one (106) and the linear contact position two (107) are in contact, the height difference between the linear contact position two (107) and the linear contact position one (106) is set as d, and the value range of d is 0.1 to 0.5 mm.
8. The reinforced pliers head as described in claim 1, characterized in that, The reinforcing ridge (108) has a guide surface (105) on the side facing the front end of the pliers head opening. The guide surface (105) is either an arc-shaped transition surface or an inclined surface. Both ends of the slot (104) are provided with an arc-shaped rounded corner structure. The inner wall surface of the slot (104) is provided with a continuous or discontinuous toothed structure surface.
9. The reinforced pliers head as described in any one of claims 1 to 8, characterized in that, Intermittent grooves (110) are left between the left and right ends of the reinforcing ridge (108) and the corresponding groove wall (102).
10. A clamping pliers, characterized in that, Includes the reinforced pliers head as described in any one of claims 1 to 9.