CN218960819U - Knotting pliers - Google Patents

Abstract

The application relates to a pair of knotting pliers, belongs to the technical field of medical appliances, and adopts the scheme that: the clamp comprises two clamp heads and two clamp handles, wherein the two clamp heads are connected in a rotating way, the two clamp handles are respectively connected with the clamp heads, an occlusion forming mechanism is arranged between the clamp heads, and the occlusion forming mechanism comprises a convex tooth forming part and a groove forming part; the second clamp head is provided with a convex tooth, and the convex tooth forming part is arranged on the convex tooth; the first clamp head is provided with a groove forming part at a position corresponding to the convex tooth forming part; when the clamp heads are closed, the convex tooth forming parts are meshed with the groove forming parts, so that the closed nails positioned between the two clamp heads are extruded, the closed nails are deformed, and the suture lines in the closed nails are clamped. The problem that whether the position of the closed nail before being extruded is proper or not is difficult to judge and adjust is solved in the process that the closed nail is extruded by the existing knotted product of the apparatus.

Description

Knotting pliers

Technical Field

The application relates to the technical field of medical instruments, in particular to a knotting clamp.

Background

Currently, two methods of manually knotting and instrument knotting are used clinically, wherein the instrument knotting can be rapidly completed by a suture line with a narrow space and a deep wound, the operation difficulty is reduced, the operation time is effectively shortened, and the suture line is increasingly favored by clinicians. Patent nos. CN202892020U and CN106073836B disclose two instrument knotting systems comprising a knotter and a guidewire assembly, wherein the structure of the guidewire assembly is shown in fig. 1, the guidewire assembly comprising a guidewire 11, a closure nail 12 and a guidewire frame 13, and a traction hook 14. The structure of the closure nail 12 is shown in fig. 2 and includes a boss 121 and a channel 122. When knotting, the traction hook 14 and the guide wire 11 sequentially draw the closing nail 12 and the suture 15 to the target position, and finally the closing nail channel 122 is deformed by the knotter, so that the suture 15 is clamped, and a suture knot is formed. The knotter comprises a sleeve, a punching shear wedge, a transmission rod and the like, wherein the tail end of the punching shear wedge is fixed at the front end of the sleeve, and the two blades of the punching shear wedge are extruded by the transmission rod to bite and extrude the closing nail 12 so as to ligate the suture, thereby completing knotting.

The punching shear wedge of the prior instrument knotting product extruded closing nail 12 is sealed in the sleeve, the knotting process is invisible, and whether the position of the closing nail 12 before being extruded is proper or not is not easy to judge and adjust.

Disclosure of Invention

The main aim of the application is to provide a knotting pliers, which solves the problems that whether the position of a closed nail is suitable before extrusion or not is difficult to judge and adjust in the prior art.

In order to achieve the above-mentioned purpose, the application provides a pincers of knoing, including binding clip and pincers handle, the binding clip is including rotating first binding clip and the second binding clip of connecting, pincers handle is two, two pincers handle respectively with first binding clip with second binding clip is connected, its characterized in that: the device also comprises an occlusion forming mechanism positioned between the first clamp head and the second clamp head; the occlusion forming mechanism comprises a convex tooth forming part and a groove forming part; the second clamp head is provided with a convex tooth protruding towards the first clamp head, and the convex tooth is provided with a convex tooth forming part; the groove forming part is arranged at the position, corresponding to the convex tooth forming part, on the first clamp head; when the first clamp head and the second clamp head are closed, the convex tooth forming part and the groove forming part are meshed together, so that a closed nail between the first clamp head and the second clamp head is extruded, the closed nail is deformed, and a suture line in the closed nail is clamped.

Further, the tooth forming part comprises a plurality of forming teeth arranged on the tooth; the groove forming part comprises a plurality of forming grooves arranged on the first clamp head, and the forming grooves are correspondingly arranged with the forming teeth.

Further, a guiding groove is formed in the first clamp head located at the proximal end of the groove forming part, and the guiding groove is communicated with the distal end of the groove forming part; the distal end of the first clamp head is provided with a positioning piece, the positioning piece is a sheet-shaped plate body, and a hole for the closed nail to pass through is formed in the positioning piece; the included angle between the proximal end surface of the positioning piece and the distal end surface of the convex tooth is an acute angle; the proximal end surface of the positioning piece is provided with a concave-convex surface matched with the distal end surface of the convex tooth; the first clamp head is positioned on the proximal end side of the groove forming part, or the second clamp head is positioned on the proximal end side of the convex tooth forming part, and a threading hole is vertically arranged and penetrates through the first clamp head or the second clamp head.

Further, a radial groove is formed in the positioning piece, one end of the radial groove is communicated with the hole, and the other end of the radial groove penetrates through the positioning piece along the radial direction of the hole; the first binding clip or the second binding clip where the threading hole is located is provided with a radial groove used for the suture line to pass through, one end of the radial groove is communicated with the threading hole, and the other end of the radial groove penetrates through the first binding clip or the second binding clip along the radial direction of the threading hole.

Further, the device further comprises a shearing component, wherein the shearing component is arranged between the first clamp head and the second clamp head and is positioned at the proximal end side of the occlusion forming mechanism.

Further, the shearing component comprises a cutting edge and a containing groove, the cutting edge is arranged on the second jaw positioned on the proximal end side of the convex tooth forming part, the containing groove is arranged on the first jaw positioned on the proximal end side of the groove forming part, and the cutting edge is arranged corresponding to the containing groove; the cutting edge is provided with a cutting edge seat, the cutting edge seat is detachably fixed in a cutting edge mounting groove positioned on the second clamp head through interference fit, and the geometric shapes of the cutting edge seat and the cutting edge mounting groove are matched with each other.

Further, the shearing part comprises two blades which are oppositely arranged, wherein one blade is arranged on the second jaw positioned at the proximal end side of the convex tooth forming part, and the other blade is arranged on the first jaw positioned at the proximal end side of the groove forming part; two all be equipped with the cutting edge seat on the cutting edge, one of them the cutting edge seat is through interference fit detachable be fixed in be located the cutting edge mounting groove of second binding clip, another the cutting edge seat is through interference fit detachable be fixed in be located the cutting edge mounting groove of first binding clip, two the cutting edge seat with the geometry of corresponding cutting edge mounting groove mutually support.

Further, a limiting structure is arranged between the two forceps handles; the limiting structure is a limiting protrusion, and the limiting protrusion is connected with any one of the forceps handles; and a ratchet structure which is meshed with each other is further arranged between the two forceps handles.

Further, a limiting structure is arranged between the two clamp handles, the limiting structure comprises a limiting adjusting groove and a limiting rod, the limiting adjusting groove is arranged on one of the clamp handles, and the limiting rod is arranged in the limiting adjusting groove in a sliding mode; the limiting adjusting groove comprises a plurality of limiting clamping grooves and limiting rod sliding channels, and the limiting rod sliding channels are used for communicating the plurality of limiting clamping grooves; the limiting clamping grooves are the same in size; the limiting clamping grooves are distributed equidistantly along the length direction of the corresponding clamp handle; the surface of the clamp handle provided with the limit adjusting groove is provided with scale marks for marking the position of the limit clamping groove.

Further, the first binding clip and/or the proximal end head of the second binding clip is provided with a detachable fastening structure, the fastening structure comprises a fastening groove and a fastening rod, the fastening rod is provided with a fastening protrusion, and the corresponding fastening groove side wall is provided with a fixing hole for fixing the corresponding fastening protrusion.

Further, the first binding clip and the second binding clip part which are detachably connected with the corresponding binding clip are connected through a rigid sheet, one end of the rigid sheet is fixedly connected with the side wall of the proximal end of the first binding clip or is in sliding connection with the side wall of the proximal end of the second binding clip, the other end of the rigid sheet is connected with the side wall of the proximal end of the second binding clip through a sliding piece, the sliding piece is fixedly arranged on the side wall of the proximal end of the second binding clip, and a track for sliding the sliding piece is arranged on the rigid sheet.

Further, the first clamp head and the second clamp head are arranged at an included angle with the corresponding clamp handles, and the included angle is 90-180 degrees.

The beneficial effects of this application lie in, through the design of the pincers that tie a knot that has interlock forming mechanism, provide a structure and easy operation for the user, the visual adjustable instrument of tying a knot of the preceding closure nail state, promote the quality of tying a knot, avoid because the closure nail clamp suture dynamics that the unsuitable cause of closure nail position is not enough to lead to taking off the nail's problem, provide very big convenience for the user.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a prior art guidewire assembly

FIG. 2 is a schematic view of a prior art closure nail

FIG. 3 is a schematic structural view of embodiment 1 of the present application

FIG. 4 is a schematic view of the structure of FIG. 3A with a partially enlarged position

FIG. 5a is a schematic view showing a partial enlarged structure of the position of FIG. 3A when knotting is performed by using example 1 of the present application

FIG. 5b is a schematic view showing a partial enlargement of the position of FIG. 3A when knotting is completed using example 1 of the present application

FIG. 5c is a schematic diagram of the structure after knotting using example 1 of the present application

FIG. 6 is a perspective view of a binding clip portion according to embodiment 2 of the present application

FIG. 7 is a front view of a head portion of embodiment 2 of the present application

FIG. 8 is a perspective view of a binding clip portion according to embodiment 3 of the present application

FIG. 9 is a front view of a binding clip portion according to embodiment 3 of the present application

FIG. 10a is a schematic view of the structure of the binding clip immediately before knotting in example 2 of the present application

FIG. 10b is a schematic view of the structure of the binding clip of example 2 of the present application when knotting is completed

FIG. 10C is a schematic view of the structure of embodiment 2 of the present application using a guidewire assembly

FIG. 11 is a schematic view showing the structure of a head portion of embodiment 4 of the present application

FIG. 12 is a schematic view showing the structure of a portion of a binding clip according to embodiment 4 of the present application after the blade is removed

FIG. 13 is a schematic view showing the structure of a head portion of embodiment 5 of the present application

FIG. 14 is a schematic view showing the structure of a portion of a binding clip according to embodiment 5 of the present application after the blade is removed

FIG. 15 is a perspective view of one of the limit structures of the present application

FIG. 16a is a perspective view of the stop structure of FIG. 15 without a stop lever attached thereto

FIG. 16b is a front view of the graduation marks of the spacing structure of FIG. 15

FIG. 16c is a cross-sectional view of FIG. 16b A-A

FIG. 16d is a cross-sectional view of FIG. 16B B-B

FIG. 16e is a cross-sectional view of FIG. 16b C-C

FIG. 17a is a perspective view of the stop lever of the stop structure of FIG. 15

FIG. 17b is a front view of the stop lever of the stop structure of FIG. 15

FIG. 18a is a perspective view of a ratchet structure before knotting

FIG. 18b is a perspective view of the ratchet structure in the pre-clamping state before knotting

FIG. 18C is a perspective view of the ratchet structure when knotted

FIG. 19 is a perspective view of example 6 of the present application

FIG. 20 is a perspective view of a detachable binding clip portion according to embodiment 6 of the present application

FIG. 21 is a perspective view of another detachable binding clip portion of embodiment 6 of the present application

FIG. 22 is a perspective view of embodiment 6 of the present application with the removable binding clip portion removed

FIG. 23 is a partially enlarged perspective view of the FIG. 22A position

FIG. 24 is a perspective view of example 7 of the present application

FIG. 25 is a perspective view of embodiment 7 of the present application with the removable binding clip portion removed

FIG. 26a is an enlarged partial view of the location of FIG. 25A

FIG. 26b is a front view of FIG. 26a

Reference numerals:

11. guide wires 12, closure nails 13, guide wire frames 14, traction hooks 15, suture lines 121, bosses 122 and channels;

21. the clamp head, 22, clamp handle, 23, snap forming mechanism, 24, snap groove, 25, snap rod, 26, slider, 27, rail, 28, rigid piece, 29, cam, 211, first clamp head, 212, second clamp head, 221, first clamp handle, 222, second clamp handle, 223, limit protrusion, 224, limit clamping groove, 225, limit rod, 226, limit rod sliding channel, 227, scale mark, 228, ratchet structure, 231, groove forming portion, 232, cam forming portion, 241, fixing hole, 251, snap protrusion, 261, sliding portion, 262, snap fixing portion, 2251, stopper, 2252, sliding block, 2253, clamping block, 2311, forming groove, 2312, guiding groove, 2313, positioning piece, 2314, hole, 2316, threading hole, 2315, 2317, radial groove, 2318, receiving groove 2321, forming tooth, 2322, blade, 2323, blade seat, 2324, blade mounting groove.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein.

The words used for expressing the position and the direction are all words used for referring to an operator of an instrument, wherein one end close to the operator is a proximal end, one end far away from the operator is a distal end, the direction from the proximal end to the distal end is an axial direction, and the direction perpendicular to the axial direction is a radial direction.

The application provides a knotting clamp, which comprises clamp heads 21 and clamp handles 22, wherein the clamp heads 21 comprise a first clamp head 211 and a second clamp head 212 which are connected in a rotating way, the number of the clamp handles 22 is two, the two clamp handles 22 are respectively connected with the first clamp head 211 and the second clamp head 212, and an occlusion forming mechanism 23 is arranged between the first clamp head 211 and the second clamp head 212; the engagement forming mechanism 23 includes a tooth forming portion 232 and a groove forming portion 231; the second clamp head 212 is provided with a convex tooth 29 protruding towards the first clamp head 211, and the convex tooth 29 is provided with a convex tooth forming part 232; the first clamp head 211 is provided with the groove forming part 231 at a position corresponding to the convex tooth forming part 232; when the first binding clip 211 and the second binding clip 212 are closed, the tooth forming portion 232 and the groove forming portion 231 are engaged together, so as to squeeze the closure nail 12 between the first binding clip 211 and the second binding clip 212, so that the closure nail 12 is deformed, and the suture thread 15 in the closure nail 12 is clamped.

Specifically, as shown in fig. 3-4, in embodiment 1 of the present application, the protrusion tooth forming portion 232 of the engagement forming mechanism 23 is engaged with the groove forming portion 231 disposed corresponding to the protrusion tooth forming portion by closing the clamp head 21, so as to complete extrusion deformation of the closure nail 12, and the operator can observe and adjust the position of the closure nail 12 before extrusion deformation at any time during the knotting process, thereby ensuring that the closure nail 12 is located in the most suitable area of the engagement forming mechanism 23, and further ensuring that the closure nail 12 is effectively deformed to provide sufficient clamping force for the suture line, and effectively knotted. The operation process of the embodiment is the same as the principle of the existing scissors and pliers, and the operability is higher and more convenient. The closure staple 12 may be any staple known in the art that is capable of plastic deformation and contains a channel-like structure. In addition, the occlusion forming mechanism 23 is of a split structure, and a user can change the opening size of the occlusion forming mechanism 23 to adapt to closed nails of different specifications by operating the forceps handle 22, so that the application range is wider.

As shown in fig. 4, the tooth forming portion 232 is disposed on the tooth 29, so as to provide a larger deformation space for the extrusion deformation of the closure nail 12, and when the extrusion deformation occurs, the deformation amount of the closure nail 12 can be made larger, so as to provide a larger suture thread holding force and prevent the suture thread from slipping. In addition, the operator can press the closure nail 12 with lower force, and the operability is better.

The specific procedure for knotting using this example is shown in figures 5a-5 b. In use, the suture 15 is first passed through the staple channel 122 and the positioning boss 121 of the staple 12 is secured to the end of the suture 15 in the tissue. The user opens the knotting pliers by controlling one hand, pulls the free end of the suture 15 by the other hand, and positions the closed staple channel 122 having penetrated the suture 15 between the tooth forming portion 232 and the groove forming portion 231, at which time the proximal end surface of the positioning boss 121 contacts the distal end surface of the binding clip 21. After the positioning is completed, the binding clip 21 is closed, so that the occlusion forming mechanism 23 is clamped, the closed nails 12 positioned between the convex tooth forming parts 232 and the groove forming parts 231 are extruded, deformation is caused, the suture 15 is clamped, and knotting is completed. The appearance of the knot is shown in fig. 5 c. After knotting, the user can select to keep the free end of the knotted suture 15 for subsequent other treatment or to cut off the free end of the suture 15 by using scissors, thereby providing great convenience for the user.

In this embodiment, the engagement forming mechanism 23 is integrally designed with the binding clip 21, and in addition, the engagement forming mechanism 23 separately designed with the binding clip 21 may be fixedly connected with the binding clip 21 by a common fixing manner such as welding, sleeving, fastening, threading, and hinging.

Further, the tooth forming portion 232 includes a plurality of forming teeth 2321 disposed on the teeth 29; the groove forming portion 231 includes a plurality of forming grooves 2311 formed in the first clamp head 211, and the forming grooves 2311 are disposed corresponding to the forming teeth 2321. Specifically, as shown in fig. 4, the tooth forming portion 232 includes 2 forming teeth 2321; the number of the molding grooves 2311 disposed opposite to the molding teeth 2321 is 2. More than 2 forming teeth 2321 and forming grooves 2311 can be arranged according to the requirements of the length of the closing nail channel 122 of the closing nail 12, the size of the suture 15 and the like, so that the holding force on the suture 15 is improved, and the knotting is prevented from being unstable. The number of the forming teeth 2321 may be equal to or different from the number of the forming grooves 2311.

Further, a guiding groove 2312 is provided on the first clamp head 211 located at the proximal end of the groove forming portion 231, and the guiding groove 2312 is disposed in communication with the distal end of the groove forming portion 231; a positioning piece 2313 is arranged at the distal end of the first clamp head 211, the positioning piece 2313 is a sheet-shaped plate body, and a hole 2314 for the closed nail 12 to pass through is formed in the positioning piece 2313; the angle between the proximal end surface of the positioning member 2313 and the distal end surface of the tooth 29 is an acute angle; a concave-convex surface matched with the distal end surface of the convex tooth 29 is arranged on the proximal end surface of the positioning piece 2313; the first binding clip 211 located at the proximal end side of the groove forming portion 231, or the second binding clip 212 located at the proximal end side of the tooth forming portion 232, is provided with a threading hole 2316, and the threading hole 2316 is vertically disposed and penetrates through the first binding clip 211 or the second binding clip 212.

Specifically, as shown in fig. 6-7, in embodiment 2 of the present application, the guiding groove 2312 extends from the distal end of the groove forming part 231 to the proximal end, and the guiding groove 2312 can guide the installation of the closure nail 12 during use and can keep the installed closure nail 12 stably fixed in the knotting area.

The positioning piece 2313 is a metal sheet plate body, and can protect human tissues at the fixed end of the suture line 15 in the knotting process and prevent damage in the knotting process. In this embodiment, the positioning member 2313 is integrally formed with the first clamp head 211, and the positioning member 2313 may be separately designed with the first clamp head 211 and fixedly connected by welding, sleeving, fastening, threading, hinge and other common fixing methods. The aperture 2314 of the positioning member 2313 enables the passage of the closure nail 12 through the passage 122 of the suture 15, and serves as a navigation and positioning function during installation of the closure nail 12 into a knotted area. The hole 2314 does not allow the closing pin boss 121 to pass therethrough, thereby making the closing pin 12 positioned more stably, improving knotting quality and convenience of operation of the instrument.

As shown in fig. 7, the angle between the proximal end surface of the positioning member 2313 and the distal end surface of the cam 29 is acute. The setting of this included angle can prevent the proximal end face of the positioning member 2313 from rubbing against the distal end face of the cam 29 when knotting, thereby affecting the knotting effect. The proximal end surface of the positioning member 2313 is provided with a concave-convex surface which is matched with the distal end surface of the convex tooth 29. The design of the end surface of the concave-convex surface can increase the thickness of the positioning piece 2313 while not affecting the closing of the clamp head 21, so that the strength of the positioning piece 2313 is improved, the positioning piece 2313 is not easy to deform in the use process, and the closed nails 12 are better positioned. Meanwhile, the concave-convex surface has a concave-convex structure design, which reduces the gap between the positioning piece 2313 and the distal end face of the convex tooth 29, and prevents damage to surrounding tissues caused by overlarge gap between the positioning piece 2313 and the convex tooth 29 in the clamping process.

As shown in fig. 6-7, the first binding clip 211 is provided with a threading aperture 2316 at the proximal end of the bite formation mechanism 23. In this embodiment, the threading hole 2316 is a rectangular through hole located at the proximal end of the recess forming portion 231. The direction of the opening of the threading hole 2316 is vertical and is consistent with the closing direction of the knotting forceps. When knotting, the user can pass the free end of the suture thread 15 in the closure nail 12 through the threading hole 2316 and pull the free end of the suture thread 15, so that the free end of the suture thread 15 is prevented from being clamped by the knotting forceps during the knotting process, and the knotting process is prevented from being influenced. The threading hole 2316 may be formed at the proximal end of the tooth forming portion 232, and the threading hole 2316 may be formed as a through hole having a circular shape, a square shape, an oval shape, or any other shape, so long as the free end of the suture 15 to be knotted can be passed through.

In the first method of knotting using the present embodiment, as shown in fig. 10a to 10b, the suture 15 may be first passed through the closed staple channel 122, the closed staple protrusion 121 is directed to the end of the suture 15 that is fixed in the tissue, and then the free end of the suture 15 is sequentially passed through the hole 2314 and the threading hole 2316, and before knotting, the user grasps the free end of the suture 15 passing through the threading hole 2316 with one hand. In this process, the closed pin channel 122 passes through the hole 2314 and is fixed between the forming teeth 2321 and the forming groove 2311 through the guiding groove 2312, and the boss 121 of the closed pin 12 is clamped on the distal end face of the positioning member 2313, so as to complete positioning. Then, by closing the binding head 21, the occlusion forming mechanism 23 is clamped, so that the forming teeth 2321 squeeze the closed nail channel 122 and deform it, and clamp the suture 15, thereby completing knotting. The second method, shown in fig. 10c, may be accomplished using a guidewire assembly to complete the positioning of the closure staple 12 and the deployment of the suture 15. Specifically, the pulling hook 14 sequentially passes through the hole 2314 and the threading hole 2316, the closing pin 12 is positioned between the forming tooth 2321 and the forming groove 2311, the closing pin boss 121 is clamped on the distal end face of the positioning piece 2313, then the wire guide frame 13 is removed, the free end of the suture thread 15 is led in from the hole 2314 by the wire guide 11, and then led out from the threading hole 2316 through the closing pin channel 122.

Further, the positioning member 2313 is further provided with a radial slot 2315, one end of the radial slot 2315 is communicated with the hole 2314, and the other end of the radial slot 2315 penetrates through the positioning member 2313 along the radial direction of the hole 2314; the first binding clip 211 or the second binding clip 212 where the threading hole 2316 is located is provided with a radial groove 2317 for the suture 15 to pass through, one end of the radial groove 2317 is communicated with the threading hole 2316, and the other end of the radial groove 2317 penetrates through the first binding clip 211 or the second binding clip 212 along the radial direction of the threading hole 2316.

As shown in fig. 8-9, the radial slot 2315 and the radial slot 2317 in embodiment 3 of the present application are disposed perpendicular to the surface of the first clamp head 211. Before knotting, when the closure nail 12 with the suture 15 penetrating through the hole 2314 is penetrated, the suture 15 can be firstly and directly penetrated through the hole 2314 through the radial groove 2315, so that the method is more convenient, in addition, the free end of the suture 15 can also be penetrated out of the hole 2314 through the radial groove 2315 after knotting, and the problem that the suture 15 is pulled out of the hole 2314 in the process of removing the suture 15 due to overlong free end of the suture 15, so that the tissue is damaged is avoided. Meanwhile, during the knotting process, the radial groove 2317 may enable the suture 15 to be knotted to pass through, so that the suture 15 is more convenient to pass through the threading hole 2316, and the problem of tissue damage caused by the fact that the suture 15 is pulled in the process of removing the suture 15 from the threading hole 2316 due to overlong free ends of the suture 15 can be avoided.

Further, a shearing member is provided between the first jaw 211 and the second jaw 212, and the shearing member is located on the proximal end side of the bite forming mechanism 23. The shearing member includes a blade 2322 and a receiving groove 2318, the blade 2322 is disposed on the second binding clip 212 located on the proximal end side of the tooth forming portion 232, the receiving groove 2318 is disposed on the first binding clip 211 located on the proximal end side of the groove forming portion 231, and the blade 2322 is disposed corresponding to the receiving groove 2318; the blade 2322 is provided with a blade holder 2323, the blade holder 2323 is detachably fixed to a blade mounting groove 2324 located on the second clamp head 212 through interference fit, and the blade holder 2323 is matched with the geometry of the blade mounting groove 2324.

Specifically, as shown in fig. 11-12, in embodiment 4 of the present application, the blade 2322 is a wedge-shaped blade disposed on the surface of the second clamp head 212, and the accommodating groove 2318 is a strip-shaped through groove disposed on the surface of the first clamp head 211 opposite to the blade 2322. The blade holder 2323 and the blade mounting groove 2324 are trapezoidal, the blade 2322 and the blade holder 2323 are integrally formed, and the materials are all metal materials. In addition, the accommodating groove 2318 may be a through groove or a closed groove, and the shapes of the blade seat 2323 and the blade mounting groove 2324 may be regular or irregular shapes such as a cylinder, a diamond, etc., and only the appearance shapes of the two may be matched with each other. The blade 2322 and the blade holder 2323 may be made of the same or different materials, including metallic materials and non-metallic materials. The fixed connection manner of the blade 2322 and the blade holder 2323 may be a common fixed connection manner such as bonding, welding, sleeving bolt, buckle, thread, hinge and the like. When knotting, a user can install or remove the blade 2322 fixed on the blade holder 2323 according to the operation requirement, so as to complete synchronous operations of knotting and thread cutting or step-by-step operations. The user may choose to install the blade 2322 with a suitable size, so that the blade 2322 and the surface of the corresponding first binding clip 211 have a gap to allow the free end of the knotted suture thread 15 to pass through and be located above the accommodating groove 2318 before the closed nail 12 is fixedly pressed and deformed, and when the knotting is completed, the blade 2322 reaches the accommodating groove 2318 at the same time, and the thread cutting operation of the suture thread 15 can be completed, thereby realizing the synchronous operations of knotting and thread cutting. When the step operation is needed, the user operates the free end of the suture thread 15 to be far away from the upper side of the blade 2322, and after the knotting is completed, the user places the free end of the suture thread 15 above the accommodating groove 2318 to clamp the clamp head 21, so as to complete the thread cutting. In the thread cutting process, the accommodating groove 2318 provides an accommodating space for the blade 2322, so that the problem that the suture 15 cannot be effectively cut due to insufficient pulling strength of the free end of the suture 15 or insufficient sharpness of the blade 2322 is solved, and the thread cutting process is smoother and more convenient.

Alternatively, the shearing portion includes two cutting edges 2322 disposed opposite to each other, wherein one cutting edge 2322 is disposed on the second jaw 212 located on the proximal side of the tooth forming portion 232, and the other cutting edge 2322 is disposed on the first jaw 211 located on the proximal side of the groove forming portion 231; two blade holders 2323 are respectively disposed on the two blade holders 2322, one blade holder 2323 is detachably fixed in a blade mounting groove 2324 located on the second clamp head 212 through interference fit, the other blade holder 2323 is detachably fixed in a blade mounting groove 2324 located on the first clamp head 211 through interference fit, and the two blade holders 2323 are mutually matched with the corresponding geometric shapes of the blade mounting grooves 2324.

As shown in fig. 13-14, embodiment 5 of the present application is different from the above embodiments in the number of the cutting edges 2322 and the cutting edge holders 2323. The user can choose not to install blade 2322 is used for only knotting the demand as required, also can choose to install single sword or double-bladed of suitable size, cuts the line or knottes and cuts the line and go on simultaneously after realizing knotting, and the operation is more convenient. The use process of not installing the blade or installing the single blade is consistent with the foregoing, and is not repeated herein, when the knotting and thread cutting are synchronously performed by using the double blade, a gap is formed between the two blades 2322 before the closed nail 12 is extruded and deformed to allow the suture thread 15 to pass through, and when the closed nail channel 122 is extruded and deformed, the cutting edge lines of the two blades 2322 are intersected to form a "scissors blade", so that a user can cut the free end of the suture thread 15 more easily.

Further, a limiting structure is arranged between the two forceps handles 22, the limiting structure is a limiting protrusion 223, and the limiting protrusion 223 is connected with any forceps handle 22; an interengaged ratchet arrangement 228 is also provided between the two handles 22.

Specifically, as shown in fig. 3, in embodiment 1 of the present application, the limiting protrusion 223 is a columnar protrusion disposed on the surface of the first grip 221. The columnar protrusions can limit the clamping angle of the clamp handle 22 when the knotting clamp is clamped, so that the problems of cracking and the like caused by excessive deformation of the closed nail channel 122 due to excessive force applied by a user during knotting are prevented. In addition, the limiting protrusion 223 may be disposed on the surface of the second grip 222, and the appearance of the limiting protrusion 223 may be a regular or irregular appearance structure such as a column shape, a drop shape, a peak shape, etc. The limiting protrusion 223 may be integrally formed with the clamp handle 22 or detachably arranged on the surface of the clamp handle 22 by conventional fixing methods such as bonding, welding, sleeving, fastening, etc. As shown in fig. 3 and 18a-18c, the ratchet tooth structure 228 in this embodiment has a ratchet tooth count of 2, aligned in the closing direction of the handles. In the use process, as shown in fig. 18b, a user can realize pre-clamping of the closed nail channel 122 by closing the first pair of ratchets, so as to prevent the closed nail 12 from falling off from the knotting pliers, and at the moment, the position of the closed nail 12 and the position of the suture thread 15 can be adjusted, so that the knotting quality is improved. As shown in FIG. 18c, when the user closes the second pair of ratchet teeth, the closed staple channel 122 clamps the suture and wire 15, holding the second pair of ratchet teeth closed provides a continuous clamping force for the closed deformation of the closed staple channel 122, and after 2-3 seconds, the closed staple channel 122 is fully deformed and clamps the suture 15, completing the knot tying.

Further, the ratchet tooth structure 228 may have a 1 number of ratchet teeth, which when 1 may be used to pre-grip or provide a continuous gripping force. When the number of the ratchet teeth of the ratchet structure 228 is greater than 2, a user can select the ratchet teeth for pre-clamping and/or providing continuous clamping force according to different sizes of the closed nails or habits of the user, so that the user can operate the ratchet structure conveniently, and knotting quality is improved.

Optionally, a limiting structure is arranged between the two forceps handles 22, the limiting structure comprises a limiting adjusting groove and a limiting rod 225, the limiting adjusting groove is arranged on one of the forceps handles 22, and the limiting rod 225 is slidably arranged in the limiting adjusting groove; the limiting adjustment groove comprises a plurality of limiting clamping grooves 224 and limiting rod sliding channels 226, and the limiting rod sliding channels 226 are used for communicating the plurality of limiting clamping grooves 224; the plurality of limit clamping grooves 224 have the same size; the plurality of limit clamping grooves 224 are equidistantly distributed along the length direction of the corresponding clamp handle 22; the surface of the clamp handle 22 provided with the limit adjusting groove is provided with graduation marks 227 for marking the position of the limit clamping groove 224.

Specifically, as shown in fig. 15 and 16a, in this embodiment, the limit clamping grooves 224 of the limit adjusting groove are 3 rectangular grooves with the same size, which are flush up and down, and are axially equidistantly distributed on the side surface of the first clamp handle 221; as shown in fig. 17a-17b, the stop lever 225 in this embodiment includes a stop block 2251 that is movable on the surface of the first jaw handle 221, and a slide block 2252 and a stop block 2253 that are movable within the stop lever slide channel 226; as shown in fig. 16a and 16d-16e, the stop lever sliding channel 226 is a "t" shaped slot provided on the surface of the first grip 221; as shown in fig. 16a-16b, the graduation marks 227 are 3 wire grooves formed on the upper surface of the first grip 221. Specifically, the user can fix the stopper rod 225 to different stopper clamping grooves 224 by sliding the stopper rod 225 in the stopper rod sliding channel 226 according to the size of the closure nail 12 or the user's situation. In the above process, the user may quickly find the position of the target limiting slot 224 according to the scale mark 227, so as to quickly slide the limiting rod 225 to the target position, thereby completing the limiting setting. The use of the stop lever 225 after being in the target stop slot 224 is the same as the use of the stop protrusion 223, so that the problem of knotting failure caused by excessive deformation of the closed nail channel 122 due to excessive force of a user can be effectively prevented.

In addition, the number of the limiting clamping grooves may be 2 or more than 3, and the sizes and shapes of the limiting clamping grooves 224 may be different, and only the limiting clamping grooves need to be arranged in a non-completely overlapping manner along the length direction of the surface of the clamp handle. The stop bar sliding channel 226 may also be a + or + slot. Other forms of indicia may also be used for the graduation marks, including etched, glued, welded indicia, and the like.

Further, the proximal end of the first clamp head 211 and/or the second clamp head 212 is provided with a detachable fastening structure, the fastening structure includes a fastening groove 24 and a fastening rod 25, the fastening rod 25 is provided with a fastening protrusion 251, and a fixing hole 241 for fixing the fastening protrusion 251 is provided on the corresponding side wall of the fastening groove 24.

Specifically, as shown in fig. 19-20 and fig. 22-23, in embodiment 6 of the present application, detachable fastening structures are disposed on the first clamp head 211 and the second clamp head 212, the first clamp head 211 and the second clamp head 212 away from the clamp handle 22 are provided with fastening grooves 24, the first clamp head 211 and the second clamp head 212 close to the clamp handle 22 are provided with fastening rods 25, and the side walls of the fastening grooves 24 are provided with fixing holes 241 for fixing the fastening protrusions 251. In the use process, a user can select different parts of the clamp head 21 to install according to different knotting requirements. If simultaneous knotting and trimming is desired, the portion of the first binding head 211 and/or the second binding head 212 with the blade 2322 may be optionally attached to the clasp shaft 25; if only knotting is required, the first and second binding heads 211, 212 without the blade 2322 may optionally be partially attached to the clasp shaft 25. Operators can select different knotting tools according to specific requirements of the operation, so that the operation is convenient, and the medical cost is reduced. The latch lever 25 may be provided at a portion remote from the first jaw 211 and the second jaw 212 of the grip 22, and the latch groove 24 may be provided at a portion corresponding to the first jaw 211 and the second jaw 212 of the grip 22, and the number of the latch protrusions 251 and the latch grooves 24 may be plural.

In assembly, the user can insert the snap rod 25 into the snap groove 24, and the assembly can be completed when the snap protrusion 251 is fixed to the fixing hole 241. When the pliers are disassembled, a user can press the buckling protrusion 251 forcefully to enable the buckling protrusion 251 to be separated from the fixing hole 241, and the pliers handle 22 is pulled to complete the disassembly. In addition, the fastening protrusion 251 may penetrate the fixing hole 241, so that a user can press the fastening protrusion 251 to detach the clamp head 21. The material of the snap projection 251 may be metal or nonmetal, and may be integrally formed with the snap rod 25 or be separately designed and then connected by a common fixing manner such as bonding, welding, sleeving, fastening, threading, and hinge.

In addition, one of the binding clip 21 is provided with the cutting edge 2322 and is provided with a detachable fastening structure, and the other binding clip which is not provided with the cutting edge 2322 is fixedly connected with the corresponding forceps handle 22, so that the requirement of only knotting or knotting and wire cutting synchronous operation can be met by replacing one binding clip in the use process. The specific use process is the same as above, and will not be repeated here.

Further, the first binding clip 211 and the second binding clip 212 that are detachably connected to the corresponding binding clip 21 are connected through a rigid sheet 28, one end of the rigid sheet 28 is fixedly connected or slidingly connected with a side wall of the proximal end of the first binding clip 211, the other end of the rigid sheet 28 is connected with a side wall of the proximal end of the second binding clip 212 through a sliding member 26, the sliding member 26 is fixedly arranged on the side wall of the proximal end of the second binding clip 212, and a track for sliding the sliding member 26 is arranged on the rigid sheet 28.

Specifically, as shown in fig. 19-20, the upper and lower surfaces of the detachable first binding clip 211 and the detachable second binding clip 212 are respectively connected by the rigid sheets 28, and the rigid sheets 28 are waist-shaped metal sheets, and the number of the rigid sheets is 2. The slider 26 is a pin fixed to the proximal end of the second binding clip 212, and the slider includes a sliding portion 261, and the sliding portion 261 is a pin. One ends of the two metal sheets are fixed on the upper and lower surfaces of the proximal end of the first clamp head 211, the other ends of the two metal sheets are provided with the rails 27, the rails 27 are waist-shaped through holes, and the sliding parts 261 can slide in the waist-shaped through holes to respectively slidingly connect the other ends of the metal sheets with the upper and lower surfaces of the second clamp head 212. In the opening/closing process of the binding clip 21 from the pre-knotting state to the post-knotting state, the sliding portion 261 slides in the waist-shaped hole, so that the movement direction of the first binding clip 211 and the second binding clip 212 is limited only in the opening/closing direction of the binding clip 21, and the knotting quality is improved.

Alternatively, the appearance of the sliding portion 261 may be a geometric structure with a certain height, such as a column, a block, etc., and the fixing manner between the sliding member 26 and the clamp head 21 and between the sliding portion 261 and the sliding member 26 may be an integrally formed manner or a separate design, and then a common fixing manner such as welding, fastening, threading, and hinge may be adopted. The appearance of the through hole and the positional relationship between the fixed end of the rigid plate 28 and the sliding portion 261 of the sliding member 26 located on the same surface of the clamp head 21 are not particularly limited, and the through hole range only needs to include the movement track of the sliding portion 261 before and after the clamp head 21 is opened and closed. The rigid plate 28 may be made of metal or nonmetal, and the fixing manner of the fixed end of the rigid plate 28 may be fixed on the surface of the clamp head 21 by welding, fastening, threading, hinge, or other common fixing manners after being integrally formed or separately designed.

Alternatively, as shown in fig. 21, the sliding member 26 further includes a fixing portion 262, one end of the rigid plate 28 may be fixedly connected to the surface of the clamp head 21 through the through hole and the fixing portion 262, and the other end is fixedly connected to the surface of the other clamp head 21, and the sliding portion 261 (not shown) may move along the through hole during the opening and closing process of the clamp head 21. The difference from the above embodiment is that the number of the sliding members 26 and the rigid plates 28 is 1, and the sliding members and the rigid plates are located on the upper surface of the clamp head 21; the slider 26 includes a clamping portion 262, and the clamping portion 262 is a pin cap that clamps the rigid plate 28 with the waist-shaped through hole to the surface of the second clamp head 212.

Alternatively, the track 27 may be an inverted "L" or "T" shaped elongated slot provided in the rigid plate 28, and the pin cap may be the sliding portion 261, and during the opening and closing of the clamp head 21, the pin cap slides along the slot, and the pin cap is also the fastening portion 262 due to the geometric relationship, so as to fasten the rigid plate 28 to the surface of the clamp head 21 through the slot. The slide 26 may be selected from bolts, rivets, etc.

Alternatively, the fixed end of the rigid plate 28 in the above embodiment may be fixedly connected to the surface of the clamp head 21 through the through hole or the long groove rail and the fastening portion 262 of the sliding member 26.

Further, the first binding clip 211 and the second binding clip 212 are disposed at an angle with respect to the grip 22, and the angle is 90 ° -180 °.

Specifically, as shown in fig. 3 and 19, in embodiments 1 and 6 of the present application, the first clamp head 211 and the second clamp head 212 are connected to the clamp handle 22 by an included angle of 180 °, that is, the clamp head 21 is horizontally connected to the clamp handle 22. As shown in fig. 24-25 and 26a-26b, in embodiment 7 of the present application, the clip lever 25 forms an included angle greater than 90 ° and less than 180 ° and is disposed at one end of the first binding clip 211 and the second binding clip 212 near the handle 22, so that the first binding clip 211 and the second binding clip 212 form an obtuse angle with the handle 22, that is, the occlusion forming mechanism 23 and the handle 22 are not on the same horizontal line, and at this time, the knotting end of the knotting clip forms an included angle with the operating end. Because different operations in the operation process need knotted position and incision position often different, so when end and the operation end of knoing form the contained angle, the operator can be to the tissue of waiting to tie that does not correspond with incision position tie, can solve the operation in-process, because incision position reason, makes the process of knoing sight limited, influences the problem of quality of knoing, and convenient operation.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (12)

1. The utility model provides a pincers of knoing, includes binding clip and pincers handle, the binding clip is including rotating first binding clip and the second binding clip of connecting, pincers handle is two, two pincers handle respectively with first binding clip with second binding clip is connected, its characterized in that: the device also comprises an occlusion forming mechanism positioned between the first clamp head and the second clamp head;

the occlusion forming mechanism comprises a convex tooth forming part and a groove forming part;

the second clamp head is provided with a convex tooth protruding towards the first clamp head, and the convex tooth is provided with a convex tooth forming part;

the groove forming part is arranged at the position, corresponding to the convex tooth forming part, on the first clamp head;

When the first clamp head and the second clamp head are closed, the convex tooth forming part and the groove forming part are meshed together, so that a closed nail between the first clamp head and the second clamp head is extruded, the closed nail is deformed, and a suture line in the closed nail is clamped.

2. The knotting pliers of claim 1, wherein: the convex tooth forming part comprises a plurality of forming teeth arranged on the convex tooth; the groove forming part comprises a plurality of forming grooves arranged on the first clamp head, and the forming grooves are correspondingly arranged with the forming teeth.

3. The knotting pliers of claim 1, wherein: the first clamp head positioned at the proximal end of the groove forming part is provided with a guide groove which is communicated with the distal end of the groove forming part;

the distal end of the first clamp head is provided with a positioning piece, the positioning piece is a sheet-shaped plate body, and a hole for the closed nail to pass through is formed in the positioning piece;

the included angle between the proximal end surface of the positioning piece and the distal end surface of the convex tooth is an acute angle;

the proximal end surface of the positioning piece is provided with a concave-convex surface matched with the distal end surface of the convex tooth;

The first clamp head is positioned on the proximal end side of the groove forming part, or the second clamp head is positioned on the proximal end side of the convex tooth forming part, and a threading hole is vertically arranged and penetrates through the first clamp head or the second clamp head.

4. The knotting pliers of claim 3, wherein: the positioning piece is provided with a radial groove, one end of the radial groove is communicated with the hole, and the other end of the radial groove penetrates through the positioning piece along the radial direction of the hole; the first binding clip or the second binding clip where the threading hole is located is provided with a radial groove used for the suture line to pass through, one end of the radial groove is communicated with the threading hole, and the other end of the radial groove penetrates through the first binding clip or the second binding clip along the radial direction of the threading hole.

5. The knotting pliers of claim 1, wherein: the cutting component is arranged between the first clamp head and the second clamp head and is positioned on the proximal end side of the occlusion forming mechanism.

6. The knotting pliers of claim 5, wherein: the shearing component comprises a cutting edge and a containing groove, the cutting edge is arranged on the second jaw positioned at the proximal end side of the convex tooth forming part, the containing groove is arranged on the first jaw positioned at the proximal end side of the groove forming part, and the cutting edge is correspondingly arranged with the containing groove;

The cutting edge is provided with a cutting edge seat, the cutting edge seat is detachably fixed in a cutting edge mounting groove positioned on the second clamp head through interference fit, and the geometric shapes of the cutting edge seat and the cutting edge mounting groove are matched with each other.

7. The knotting pliers of claim 5, wherein: the shearing part comprises two blades which are oppositely arranged, one blade is arranged on the second jaw which is positioned at the proximal end side of the convex tooth forming part, and the other blade is arranged on the first jaw which is positioned at the proximal end side of the groove forming part;

two all be equipped with the cutting edge seat on the cutting edge, one of them the cutting edge seat is through interference fit detachable be fixed in be located the cutting edge mounting groove of second binding clip, another the cutting edge seat is through interference fit detachable be fixed in be located the cutting edge mounting groove of first binding clip, two the cutting edge seat with the geometry of corresponding cutting edge mounting groove mutually support.

8. The knotting pliers of claim 1, wherein: a limiting structure is arranged between the two forceps handles; the limiting structure is a limiting protrusion, and the limiting protrusion is connected with any one of the forceps handles; and a ratchet structure which is meshed with each other is further arranged between the two forceps handles.

9. The knotting pliers of claim 1, wherein: a limiting structure is arranged between the two clamp handles, the limiting structure comprises a limiting adjusting groove and a limiting rod, the limiting adjusting groove is arranged on one of the clamp handles, and the limiting rod is arranged in the limiting adjusting groove in a sliding manner;

the limiting adjusting groove comprises a plurality of limiting clamping grooves and limiting rod sliding channels, and the limiting rod sliding channels are used for communicating the plurality of limiting clamping grooves;

the limiting clamping grooves are the same in size; the limiting clamping grooves are distributed equidistantly along the length direction of the corresponding clamp handle;

the surface of the clamp handle provided with the limit adjusting groove is provided with scale marks for marking the position of the limit clamping groove.

10. The knotting pliers of any one of claims 1-9, wherein: the novel clamp comprises a first clamp head and a second clamp head, wherein a detachable clamping structure is arranged at the proximal end head of the first clamp head and/or the proximal end head of the second clamp head, the clamping structure comprises a clamping groove and a clamping rod, clamping protrusions are arranged on the clamping rod, and fixing holes for fixing the corresponding clamping protrusions are arranged on the side walls of the clamping groove.

11. The knotting pliers of claim 10, wherein: the first clamp head and the second clamp head are detachably connected with the corresponding clamp heads through rigid plates, one ends of the rigid plates are fixedly connected with the side wall of the proximal end of the first clamp head or are in sliding connection with the side wall of the proximal end of the second clamp head, the other ends of the rigid plates are connected with the side wall of the proximal end of the second clamp head through sliding pieces, the sliding pieces are fixedly arranged on the side wall of the proximal end of the second clamp head, and rails for sliding of the sliding pieces are arranged on the rigid plates.

12. The knotting pliers of claim 10, wherein: the first clamp head and the second clamp head are arranged at an included angle with the corresponding clamp handles, and the included angle is 90-180 degrees.

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