CN219166539U

CN219166539U - Vertebral lamina rongeur

Info

Publication number: CN219166539U
Application number: CN202222315155.7U
Authority: CN
Inventors: 卢科军
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-06-13
Anticipated expiration: 2032-08-30

Abstract

The utility model belongs to the field of medical auxiliary instruments, and particularly relates to a vertebral lamina rongeur, which comprises a forceps handle, a forceps rod assembly, a push rod and a connecting rod, wherein the connecting rod is rotationally connected with the push rod and moves along with the push rod; the side of the forceps handle is provided with a bar-shaped hole, and the handle penetrates through the bar-shaped hole to be connected with the push rod. After the clamp jaws are clamped, the handles are pulled to enable the movable clamp rod to retract or enable the clamp jaw area and clamped bones to loosen, the clamping state is relieved, the bottoms of the limiting pieces extend into the annular grooves under the extrusion of the inner walls of the sleeves, the clamp rod assembly can rotate, meanwhile, the limiting is carried out in the axial direction, the sleeves are pulled, the limiting blocks lose limiting, at the moment, the clamp rod assembly can be directly loosened from the clamp handles, and the clamp rod assembly is convenient and quick to detach and install.

Description

Vertebral lamina rongeur

Technical Field

The utility model belongs to the field of medical auxiliary instruments, and particularly relates to a vertebral lamina rongeur.

Background

The laminar rongeur is mainly applied to clinical operations such as neurosurgery or spinal surgery, particularly operations on lumbar vertebrae, thoracic vertebrae or cervical vertebrae, and often requires separation and cutting of angular bones or irregular ligaments, and a surgeon usually uses the laminar rongeur to perform rongeur treatment on the skull or vertebrae. The vertebral plate rongeur generally comprises a forceps handle, a static forceps rod and a movable forceps rod, wherein the forceps handle is held when in use, and the movable forceps rod is pushed to move so as to perform corresponding operation.

The jaw direction of the traditional rongeur is fixed, so that the operator can not adjust the jaw direction, and can only rotate the position of the whole rongeur by rotating the arm, thereby achieving the purpose of changing the jaw direction, and the operator needs to frequently change the position of the arm, so that inconvenient operation is caused. In the use process, the jaw of the rongeur is easy to be blocked due to the fact that the jaw is blocked into a bone, so that the movable clamp rod cannot be automatically reset under the action of the spring, and after the jaw is blocked, the jaw is required to be pried open by a special instrument for disassembling the pliers, so that the time and the labor are wasted, the operation is troublesome, and the instrument is easy to damage. For this reason, patent number CN201821450517.0 discloses a vertebral plate rongeur, which realizes the adjustment of jaw direction by rotationally connecting a forceps rod with forceps handles, and sleeves a stirring piece on a push rod, pulls the stirring piece when the jaws are stuck, and resets the forceps rod through the push rod to release the stuck.

In the patent, the poking part can move on the push rod along the moving direction of the push rod, namely, the poking part is arranged on the push rod in a linear sliding way, and can only drive the push rod to move backwards but can not drive the push rod to move forwards, so that the poking part can only apply force backwards to pull the push rod to retract forcibly, and the jaw area and the clamped bone can not be loosened by moving the push rod forwards and backwards through the poking part, so that certain inconvenience exists in operation. Secondly, although the patent describes that each component of the clamp lever device, the clamp main body device and the clamp handle device adopts a detachable design, the static clamp lever is fixedly connected with the rotating piece, the outer diameter of the rotating piece, which is close to the push rod part, is larger, and is used for limiting the position of the rotating piece so as to prevent the rotating piece from moving out of the front end of the clamp body sleeve, and the structure can lead to the clamp lever assembly not to be conveniently detached and installed, so that the overall structure of the rongeur needs to be optimized.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the vertebral plate rongeur with adjustable jaw direction, capability of relieving jaw clamping and convenient assembly and disassembly of a clamp rod assembly.

The utility model relates to a pair of pliers, which comprises a pliers handle, a pliers rod assembly, a push rod, a sleeve, a handle and a spring I, wherein the spring I is used for driving the push rod to reset; the side of the forceps handle is provided with a strip-shaped hole, and one end of the handle penetrates through the strip-shaped hole to be connected with the push rod.

Furthermore, the push rod is connected with the connecting rod through a pin shaft, one end of the pin shaft is fixedly connected with the connecting rod, and the other end of the pin shaft is rotationally connected with the push rod.

Furthermore, a first accommodating groove is formed in the inner wall of the sleeve, and when the sleeve is slid to enable the first accommodating groove to face the limiting block, the limiting block can move towards the first accommodating groove so that the limiting block can withdraw from the annular groove.

Still further, be provided with the elasticity card pearl on the sleeve, set up the opening that supplies the elasticity card pearl to pass on the pincers handle, be provided with on the lateral wall of axle sleeve two be used for with elasticity card pearl complex draw-in groove, the draw-in groove is provided with the several, and several draw-in groove circumference sets up on axle sleeve two.

Still further, still offer holding tank two on the telescopic inner wall, be provided with round boss on the pincers handle, the cover is equipped with spring two on the pincers handle, spring two is located between holding tank two and the boss.

Furthermore, the static clamp rod is a hollow rod, and the movable clamp rod is arranged in the static clamp rod in a penetrating way.

Still further, still include the cleaning joint, cleaning joint cover is established on quiet clamp lever and is in communication with quiet clamp lever inside.

Still further, the clamp rod assembly further comprises a clamp mouth, the clamp mouth comprises two clamp heads which are matched for use, one clamp head is detachably connected with the other end of the movable clamp rod, and the other clamp head is detachably connected with the static clamp rod.

Furthermore, the detachable connection is threaded connection, one end of a clamp head connected with the static clamp rod is provided with a connecting sleeve through which the movable clamp rod can pass, and the clamp head is in threaded connection with the static clamp rod through the connecting sleeve.

Still further, the pincers handle includes pincers handle body and sets up the axle sleeve one in pincers handle body one end, the through-hole is seted up on axle sleeve one, quiet pincers pole is provided with axle sleeve two towards the one end of pincers handle, the annular groove sets up on axle sleeve two.

The jaw clamping device has the beneficial effects that the connecting rod is rotationally connected with the push rod, the connecting rod moves along with the push rod, the handle cannot interfere due to the rotation of the jaw rod assembly, when the jaw is clamped and the movable jaw rod cannot reset by the force of the first spring, the movable jaw rod can be moved by pulling the push rod back and forth through the handle so as to be separated from the clamping.

When the clamp rod assembly is arranged in the clamp handle in a penetrating way, the limiting block is stressed and pressed into the annular groove on the side face of the clamp rod assembly through the action of the inner wall of the sleeve, so that the clamp rod assembly is mounted, and the clamp rod assembly can rotate relative to the clamp handle and limit the axis direction of the clamp rod assembly. When the clamp rod assembly is required to be detached, the sleeve is pulled, the limiting block loses the limit of the inner wall of the sleeve, at the moment, the clamp rod assembly can be directly loosened from the clamp handle, the disassembly and the installation are convenient and quick, the assembly time is saved, the comprehensive disinfection and cleaning of all parts after operation are facilitated, and meanwhile the replacement between the parts is facilitated.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is an enlarged view of the utility model at a in fig. 1.

Fig. 3 is a side view of the present utility model.

Fig. 4 is a schematic structural view of a pincer nozzle according to the present utility model.

In the figure, 1-clamp handle; 11-a fixed handle; 12-a movable handle; 2-clamp bar assembly; 21-static clamp bar; 211-a second shaft sleeve; 22-moving clamp bars; 3-clamp mouth; 31-clamp heads; 311-connecting sleeve; 4-ejector rods; 41-push rod; 42-connecting rods; 43-pin shaft; 5-spring one; 6-a first shaft sleeve; 61-limiting blocks; 62-opening; 7-a sleeve; 71-elastic clamping beads; 72-accommodating groove I; 73-spring two; 8-cleaning the joint; 9-handle.

Detailed Description

As shown in fig. 1-4, the pliers comprise pliers handles 1, pliers rod assemblies 2, ejector rods 4, sleeves 7, handles 9 and a first spring 5 for driving the ejector rods 4 to reset, the ejector rods 4 comprise push rods 41 and connecting rods 42, the connecting rods 42 are rotationally connected with the push rods 41, the connecting rods 42 move along with the push rods 41, the pliers rod assemblies 2 comprise static pliers rods 21 and movable pliers rods 22, the movable pliers rods 22 are fixedly connected with the connecting rods 42, and when the connecting rods 42 move, the movable pliers rods 22 move along with the connecting rods 42, meanwhile, the push rods 41 also move along with the connecting rods 42, but do not rotate along with the connecting rods 42. Wherein, in the utility model, the clamp handle 1 comprises a clamp handle body and a shaft sleeve I6, the clamp handle body comprises a fixed handle 11 and a movable handle 12, the movable handle 12 is hinged with the fixed handle 11, a cavity is arranged on the fixed handle 11, the ejector rod 4 is arranged in the cavity and can move along the cavity under the external force, the shaft sleeve I6 is fixedly arranged at one end of the fixed handle 11, the fixed handle 11 and the movable handle 12 are held and apply force to the movable handle 12, the movable handle 12 deflects around a hinge shaft, thereby pushing the ejector rod 4 to move,

the first shaft sleeve 6 is provided with a through hole, a limiting block 61 is movably arranged in the through hole, the limiting block 61 can move along the depth direction of the through hole (namely the axial direction of the through hole) under the action of external force, one end of the static clamp rod 21 is provided with a second shaft sleeve 211, the movable clamp rod 22 is arranged in the second shaft sleeve 211 in a penetrating mode, the side surface of the second shaft sleeve 211 is provided with an annular groove, the second shaft sleeve 211 is arranged in the first shaft sleeve 6 in a penetrating mode, the first shaft sleeve 6 is sleeved with the sleeve 7 and can slide along the first shaft sleeve 6, the limiting block 61 is extruded by the inner wall of the first shaft sleeve 7 to move downwards, the bottom of the limiting block 61 stretches into the annular groove to limit, the annular groove is arranged, the clamp rod assembly 2 can be limited in the axial direction of the clamp rod assembly 2, the clamp rod assembly 2 is prevented from sliding out, the limiting block 61 can move circumferentially around the annular groove when the clamp rod assembly 2 rotates, preferably serves as a steel ball, the limiting block 61 rotates circumferentially and is smaller than the diameter of the steel ball, the diameter of the through hole is smaller than the diameter of the steel ball, and the diameter of the through hole can not move out of the steel ball. In the utility model, the connecting rod 42 is T-shaped, the first spring 5 is sleeved on the connecting rod 42 and is positioned between the end part of the connecting rod 42 and the second shaft sleeve 211, when the ejector rod 4 drives the movable clamp rod 22 to move, the first spring 5 is in a compressed state, and after the movable handle 12 is released, the first spring 5 drives the ejector rod 4 to drive the movable clamp rod 22 to reset.

The side of the fixed handle 11 is provided with a bar hole, the length direction of the bar hole is in the same direction as the moving direction of the ejector rod 4, namely in the same direction as the axial direction of the clamp rod assembly 2, one end of the handle 9 penetrates through the bar hole to be connected with the push rod 41, the handle 9 and the bar hole are arranged to be used as guide pieces when the ejector rod 4 moves, and when the jaws are blocked, the ejector rod 4 is pulled back and forth by the handle 9 to move the clamp rod 22, so that the clamp rod is separated from the jaws. Of these, the handle 9 is preferably detachably connected, in particular screwed, to the push rod 41.

According to the rongeur provided by the utility model, as the connecting rod 42 is rotationally connected with the push rod 41, the connecting rod 42 moves along with the push rod 41, the handle 9 cannot generate circumferential interference due to the rotation of the clamp rod assembly 2, when the jaw is clamped and the movable clamp rod 22 cannot reset by the force of the spring I5, the movable clamp rod 22 can be moved by pulling the push rod 4 back and forth through the handle 9, so that the clamp rod 22 is separated from clamping, and compared with a mode of directly sleeving a stirring piece on the push rod, the rongeur provided by the utility model has the advantages that the handle 9 can bear force back and forth, the handle 9 can be pulled back after the jaw is clamped, the jaw area and the clamped bone can be loosened by pushing the handle 9 back and forth when the clamp is clamped tightly, and the clamp jaw clamping state is relieved, so that the rongeur is more convenient and reliable to use.

When the clamp rod assembly 2 connected with the ejector rod 4 is penetrated in the clamp handle 1, the limiting block 61 is stressed and pressed into the annular groove on the side surface of the second shaft sleeve 211 under the action of the inner wall of the sleeve 7, so that the clamp rod assembly 2 and the ejector rod 4 are mounted, and the clamp rod assembly 2 can rotate relative to the clamp handle 1 and simultaneously limit the axis direction of the clamp rod assembly 2. When the clamp rod assembly 2 and the ejector rod 4 need to be detached, the sleeve 7 is pulled, the limiting block 61 loses the limit of the inner wall of the sleeve 7, at the moment, the clamp rod assembly 2 and the ejector rod 4 can be directly loosened from the clamp handle 1, the disassembly and the installation are convenient and quick, the assembly time is saved, the comprehensive disinfection and cleaning of all parts after operation are facilitated, and meanwhile, the replacement between the parts is convenient. Wherein, during the installation and the disassembly, the handle 9 and the ejector rod 4 are in a separated state, and the handle 9 is connected with the ejector rod 41 through the strip-shaped hole after being installed.

In the present utility model, as shown in fig. 1, the push rod 41 is connected to the connecting rod 42 through a pin 43, one end of the pin 43 is fixedly connected to the connecting rod 42, and the other end is rotatably connected to the push rod 41. Specifically, one end of the pin shaft 43 is provided with a tip, the diameter of the tip is larger than the diameter of the rod body of the pin shaft 43, the pin shaft 43 is of a T shape as a whole, a T-shaped hole groove is formed in the push rod 41, one end of the pin shaft 43 with the tip is arranged in the T-shaped hole groove on the push rod 41 and can rotate in the T-shaped hole groove, the pin shaft 43 cannot deviate from the push rod 41 under the limit of the tip, and the other end of the pin shaft 43 is fixedly connected with the connecting rod 42.

As shown in fig. 2, the inner wall of the sleeve 7 is provided with a first receiving groove 73, when the sleeve 7 slides rightwards, the first receiving groove 73 moves rightwards to be located above the limiting block 61, the first receiving groove 73 faces the limiting block 61, at this time, the limiting block 61 loses the limitation of the inner wall of the sleeve 7, and the limiting block 61 can move towards the first receiving groove 73, so that the limiting block 61 withdraws from the annular groove, and the clamp rod assembly 2 is separated. As shown in fig. 2, the side wall of the first accommodation groove 73 is preferably a slope, and when the sleeve 7 moves to the left for resetting, the slope gradually presses the stopper 61 to move the stopper 61 downward.

The sleeve 7 is provided with an elastic clamping bead 71, the first shaft sleeve 6 is provided with an opening for the elastic clamping bead 71 to pass through, the outer side wall of the second shaft sleeve 211 is provided with clamping grooves matched with the elastic clamping bead 71, the clamping grooves are provided with a plurality of clamping grooves, and the plurality of clamping grooves are circumferentially arranged on the second shaft sleeve 211. Specifically, the elastic clamping bead 71 includes a compression spring and a clamping bead, one end of the compression spring is fixed on the sleeve 7, and the clamping bead is fixed on one end of the compression spring. The clamping beads are clamped into the nearest clamping grooves in the second shaft sleeve 211 under the force of the pressure springs, when a certain force is applied to rotate the clamp rod assembly 2, the clamping beads are stressed, the pressure springs are compressed, and when the clamp rod assembly 2 rotates to a proper position, the clamping beads are clamped into the nearest clamping grooves, and the clamp rod assembly 2 is limited. Wherein, the width of the opening is larger than the width of the elastic clamping bead 71, and the elastic clamping bead 71 can move along the opening when the sleeve 7 is moved.

As shown in fig. 2, the inner wall of the sleeve 7 is further provided with a second accommodating groove, the clamp handle 1 is provided with a circle of boss, the clamp handle 1 is sleeved with a second spring 72, one end of the second spring 72 is connected with the second accommodating groove, the other end of the second spring is connected with the boss, and the second spring 72 is located between the second accommodating groove and the boss. When the sleeve 7 is pulled to move rightwards, the second spring 72 is in a compressed state, and after the second spring 72 is released, the sleeve 7 is reset.

In the utility model, the clamp rod assembly 2 further comprises a clamp mouth 3, the clamp mouth 3 comprises two clamp heads 31 which are matched for use, one clamp head 31 is detachably connected with the other end of the movable clamp rod 22, the other clamp head 31 is detachably connected with the static clamp rod 21, the movable clamp rod 22 and the static clamp rod 21 are long due to the size requirement, the movable clamp rod 22 and the static clamp rod 21 are detachably connected with the corresponding clamp heads 31, the clamp heads 31 can be conveniently cleaned better, and when the clamp heads 31 are worn, only the clamp heads 31 can be replaced without replacing the whole rongeur, so that the use cost is saved.

The static clamp rod 21 is a hollow rod, the movable clamp rod 22 is arranged in the static clamp rod 21 in a penetrating manner, the static clamp rod 21 can play a role in guiding and transversely limiting the movable clamp rod 22, the movable clamp rod 22 is prevented from being transversely deflected due to the fact that the clamp heads 31 are stressed in the use process, the effective alignment between the two clamp heads 31 is ensured, the problem of clamp mouth dislocation is not easy to occur, and the use is more reliable. Wherein, the detachable connection is a threaded connection, one end of the clamp head 31 connected with the static clamp rod 21 is provided with a connecting sleeve 311 through which the movable clamp rod 22 can pass, and the clamp head 31 is in threaded connection with the static clamp rod 21 through the connecting sleeve 311.

As shown in fig. 1, the utility model further comprises a cleaning joint 8, wherein the cleaning joint 8 is sleeved on the static clamp rod 21 and is communicated with the inside of the static clamp rod 21. The cleaning joint 8 is used for being connected with an external cleaning pipe, and sprays cleaning liquid into the static clamp rod 21, so that the inside of the static clamp rod 21 is conveniently cleaned.

Claims

1. The vertebral plate rongeur is characterized by comprising a clamp handle (1), a clamp rod assembly (2) and a push rod (4), and further comprising a sleeve (7), a handle (9) and a first spring (5) for driving the push rod (4) to reset, wherein the push rod (4) comprises a push rod (41) and a connecting rod (42), the connecting rod (42) is rotationally connected with the push rod (41) and moves along with the push rod (41), the clamp rod assembly (2) comprises a static clamp rod (21) and a movable clamp rod (22), the movable clamp rod (22) is fixedly connected with the connecting rod (42), a through hole is formed in the clamp handle (1), a limiting block (61) is movably arranged in the through hole, an annular groove is formed in one end side face of the static clamp rod (21), the end of the static clamp rod (21) provided with the annular groove is penetrated in the clamp handle (1), and the sleeve (7) is sleeved on the clamp handle (1) and can slide along the clamp handle (1), and the limiting block (61) is extruded by the inner wall of the sleeve (7) to extend into the annular groove; a strip-shaped hole is formed in the side face of the clamp handle (1), and one end of the handle (9) penetrates through the strip-shaped hole to be connected with the push rod (41).

2. The laminar rongeur according to claim 1, characterized in that the push rod (41) is connected to the connecting rod (42) by means of a pin (43), one end of the pin (43) being fixedly connected to the connecting rod (42) and the other end being rotatably connected to the push rod (41).

3. The laminar rongeur according to claim 1, characterized in that the inner wall of the sleeve (7) is provided with a first receiving groove (73), and when the sleeve (7) slides to enable the first receiving groove (73) to face the limiting block (61), the limiting block (61) can move towards the first receiving groove (73) so as to enable the limiting block (61) to exit from the annular groove.

4. The vertebral plate rongeur according to claim 3, wherein the sleeve (7) is provided with an elastic clamping bead (71), the forceps handle (1) is provided with an opening for the elastic clamping bead (71) to pass through, the outer side wall of the second shaft sleeve (211) is provided with clamping grooves matched with the elastic clamping bead (71), the clamping grooves are provided with a plurality of clamping grooves, and the clamping grooves are circumferentially arranged on the second shaft sleeve (211).

5. The vertebral lamina rongeur according to any of claims 1 to 4, wherein a second receiving groove is further formed in the inner wall of the sleeve (7), a circle of boss is arranged on the forceps handle (1), a second spring (72) is sleeved on the forceps handle (1), and the second spring (72) is located between the second receiving groove and the boss.

6. The laminar rongeur according to any one of claims 1 to 4, characterized in that said static jaw (21) is a hollow rod, said dynamic jaw (22) being threaded inside said static jaw (21).

7. The laminar rongeur according to claim 6, further comprising a cleaning joint (8), said cleaning joint (8) being fitted over the static rod (21) and communicating with the interior of the static rod (21).

8. The laminar rongeur according to claim 6, characterized in that the rod assembly (2) further comprises a jaw (3), the jaw (3) comprising two jaws (31) for co-operation, one jaw (31) being removably connected to the other end of the movable rod (22) and the other jaw (31) being removably connected to the static rod (21).

9. The vertebral plate rongeur according to claim 8, wherein said detachable connection is a threaded connection, and a connecting sleeve (311) through which the movable jaw (22) passes is provided at one end of a jaw (31) connected to the static jaw (21), said jaw (31) being threaded with the static jaw (21) via the connecting sleeve (311).

10. The vertebral lamina rongeur according to any of claims 1 to 4, 7 to 9, wherein said forceps handle (1) includes a forceps handle body and a first sleeve (6) disposed at one end of the forceps handle body, said through hole is formed in the first sleeve (6), a second sleeve (211) is disposed at an end of said static forceps rod (21) facing the forceps handle (1), and said annular groove is disposed in the second sleeve (211).