CN211325258U - Parallel opening pliers - Google Patents

Abstract

The utility model discloses a parallel pincers that strut, including left handle and right handle, left handle and right handle pass through the handle axle and articulate, head at the left handle rotates and is connected with left pincers piece, head at the right handle rotates and is connected with right pincers piece, left side pincers piece and the parallel symmetry setting of right pincers piece, the front end of left side pincers piece and right pincers piece is provided with the flexion of incurving, the end of flexion is provided with U type groove, the slotted hole has all been seted up to the middle part of left side pincers piece and right pincers piece, be connected with the both ends of X-shaped connecting piece through the pin rotation in the slotted hole, the head of connection at left handle and right handle is rotated at the other both ends of X-shaped connecting piece, the X-shaped connecting piece can be followed the slotted hole of left pincers piece and right pincers piece and slided from beginning to end. The utility model discloses can effectively the centre gripping block the connective bar of implant nail stick system, effectively strut corresponding centrum, make things convenient for the operation.

Description

Parallel opening pliers

Technical Field

The utility model particularly relates to a parallel opening forceps, mainly used orthopedics backbone relevant operation belongs to surgical medical instrument technical field.

Background

Degenerative disc disease, vertebral body fracture or slippage, spinal stenosis, scoliosis and the like are clinically common spinal related diseases, usually need to be treated through spinal surgery, usually need to implant internal fixation objects into pathological change parts in the surgery, generally need to perform parallel distraction operation on related vertebral bodies in the surgery process, and at the moment, parallel distraction forceps can be used; the existing strutting instruments are single in function, labor-consuming and time-consuming, have the phenomena of uncontrollable and unstable strutting effect and insecure forceps taking, and the forceps taking or the clamped objects are easy to slip, and influence the operation sight of the operation, which is not beneficial to the smooth operation.

Disclosure of Invention

Problem to prior art existence, the utility model provides a parallel distraction pincers, aim at solve to implant connective bar with hold the problem that the centrum can not steadily strut firmly.

The technical scheme of the utility model is that: the utility model provides a parallel opening pliers, including left handle and right handle, left handle and right handle pass through the handle axle and articulate, head at the left handle rotates and is connected with left pincers piece, head at the right handle rotates and is connected with right pincers piece, left side pincers piece and the parallel symmetry setting of right pincers piece, the inboard of left side pincers piece and right pincers piece is close to together, the front end of left side pincers piece and right pincers piece is provided with the flexion of incurving, the end of flexion is provided with U type groove, the slotted hole has all been seted up to the middle part of left side pincers piece and right pincers piece, be connected with the both ends of X-shaped connecting piece through the pin rotation in the slotted hole, the other both ends of X-shaped connecting piece rotate the head of connecting at left handle and right handle, the X-shaped connecting piece can be followed the slotted hole of left pincers piece and right pincers piece and slide.

Furthermore, a first arc-shaped boss is arranged in the middle of the left handle, and a handle shaft hole is formed in the first arc-shaped boss; the middle part at right handle is provided with second arc boss, is provided with the handle shaft hole on the second arc boss, and the side of second arc boss is provided with the arc wall, first arc boss embedding arc wall, the handle shaft passes the handle shaft hole of first arc boss and second arc boss.

Furthermore, the X-shaped connecting piece is formed by hinging a first connecting rod and a second connecting rod.

Furthermore, a left spring piece and a right spring piece are fixedly connected to the inner sides of the rear parts of the left handle and the right handle respectively, and the free ends of the left spring piece and the right spring piece are abutted against each other.

Furthermore, an open slot is arranged at the tail end of the left handle, and a latch is arranged in the open slot; the tail end of the right handle is provided with a clamping groove which is opened towards the inner side, a locking rack is hinged in the clamping groove, and the hinged end of the locking rack is supported by a locking tooth spring piece which is fixed on the inner side of the right handle.

Has the advantages that: the utility model compresses the tails of the left and right handles to expand the heads of the left and right handles outwards, drives the left and right clamp pieces to expand outwards in parallel through the X-shaped connecting piece which is rotationally connected with the left and right clamp pieces, and can effectively clamp and clamp the connecting rod of an implant nail rod system by utilizing the U-shaped grooves of the bent heads of the left and right clamp pieces, thereby effectively expanding the centrum of the operation part and facilitating the operation of the operation; the lock rack, the latch and the lock tooth spring piece arranged at the tail parts of the left and right handles can effectively control the opening width of the left and right forceps pieces at the front ends, so that the opening action is stably carried out.

Drawings

Fig. 1 is a plan view of the parallel distracting forceps of the present invention.

Fig. 2 is a schematic structural view of the left clamp piece (the upper view is a top view, and the lower view is a side view).

Fig. 3 is a schematic structural view of the right clamp piece (the upper view is a top view, and the lower view is a side view).

Fig. 4 is a schematic structural diagram of an X-shaped connecting piece.

Fig. 5 is a schematic view of the left handle structure (the upper view is a side view, and the lower view is a top view).

Fig. 6 is a schematic structural view of the right handle (the upper view is a side view, and the lower view is a top view).

Fig. 7 is a sectional view taken along line B-B in fig. 6.

Fig. 8 is a cross-sectional view taken along line C-C of fig. 6.

The labels in the figure are: 1 left forceps handle, 2 right forceps handle, 3 handle shafts, 4X-shaped connecting pieces, 11 left forceps piece, 12 right forceps piece, 13 left spring piece, 14 right spring piece, 15 lock tooth spring pieces, 16 lock racks, 17 first arc-shaped boss, 18 open slot, 181 tooth, 19 notch, 21 second arc-shaped boss, 22 notch, 23 clamping body, 41 first connecting rod, 42 second connecting rod, 111 bending part, 112U-shaped slot, 113 slotted hole, 114 arc hole, 121 bending part, 122U-shaped slot, 123 slotted hole, 124 arc hole, 211 arc slot, 231 clamping slot.

Detailed Description

The present invention will be described in more detail below with reference to the accompanying drawings.

As shown in fig. 1, the parallel opening forceps comprise aleft handle 1 and aright handle 2, wherein theleft handle 1 and theright handle 2 are hinged through ahandle shaft 3; in a free state, the front half parts of the left handle and the right handle are close to each other by taking the handle shaft as a dividing point, and the rear half parts of the left handle and the right handle are gradually separated to form a herringbone shape of turning leftwards. As shown in fig. 5, 6 and 8, a first arc-shaped boss 17 is arranged at the middle part of theleft handle 1, and a handle shaft hole is arranged on the first arc-shaped boss 17; the middle part ofright handle 2 is provided withsecond arc boss 21, is provided with the handle shaft hole on thesecond arc boss 21, and the side of second arc boss is provided witharc groove 211,first arc boss 17 embeddingarc groove 211,handle shaft 3 passes the handle shaft hole offirst arc boss 17 andsecond arc boss 21.

As shown in fig. 1 and 5-7, aleft spring piece 13 and aright spring piece 14 are respectively fixedly connected to the inner sides of the rear parts of the left handle and the right handle, the free ends of theleft spring piece 13 and theright spring piece 14 are abutted against each other, and the left handle and the right handle are spread when in a free state; anopen slot 18 is arranged at the tail end of theleft handle 1, and a clamping 181 tooth is arranged in theopen slot 18; the tail end of theright handle 2 is provided with aclamping body 23 which is opened towards the inner side, the side surface of theclamping body 23 is provided with aclamping groove 231, alocking rack 16 is hinged in theclamping groove 231, and the hinged end of thelocking rack 16 is supported by a lockingtooth spring piece 15 which is fixed on the inner side of the right handle.

As shown in fig. 1 and 5-6, anotch 19 is arranged at the head of theleft handle 1, aleft clamp piece 11 is inserted into thenotch 19, and theleft clamp piece 11 is rotatably connected with the head of theleft handle 1 through a pin; the head of theright handle 2 is provided with anotch 22, aright clamp piece 12 is inserted into thenotch 22, theright clamp piece 12 is rotatably connected with the head of theright handle 2 through a pin, theleft clamp piece 11 and theright clamp piece 12 are symmetrically arranged in parallel, and the inner sides of the left clamp piece and the right clamp piece are close to each other in a free state.

As shown in fig. 2-3, the front ends of theleft forceps 11 and theright forceps 12 are provided withbending portions 111 and 121 which are bent inwards, an included angle between the bending portions and the main body portion is an obtuse angle, in this example, 150 degrees, the tail ends of the bending portions are provided withU-shaped grooves 112 and 122, the bending portions are designed to facilitate surgery, the visual field of the surgery operation is not affected, and the U-shaped grooves facilitate clamping of a connecting rod in the surgery; the middle parts of the left clamp piece and the right clamp piece are both provided with slottedholes 113 and 123, two ends of anX-shaped connecting piece 4 are rotatably connected in the slotted holes through pins, and the other two ends of theX-shaped connecting piece 4 are rotatably connected to the heads of the left handle and the right handle; as shown in FIG. 4, theX-shaped connecting member 4 is formed by hinging a first connectingrod 41 and a second connectingrod 42, and the X-shaped connecting member can slide back and forth along the slotted holes of the left nipper blade and the right nipper blade.

The motion principle and the use method of the parallel opening forceps are as follows: the back half parts of the left and right handles are held by hands, the left and right spring pieces between the left and right handles are compressed, and the latch locks the lock rack; meanwhile, the front half parts of the left and right handles are outwards opened to drive the tail parts of the left and right clamp pieces to be outwards opened, and simultaneously drive the rear end of the X-shaped connecting piece to be outwards opened, and the X-shaped connecting piece slides backwards along the long slotted hole and simultaneously drives the left and right clamp pieces to be outwards opened in parallel. When the device is used, the connecting rod of the implant nail rod system can be effectively clamped by utilizing the U-shaped grooves of the bent heads of the left and right clamp pieces, the left and right handles are compressed, so that the vertebral bodies connected with the connecting rod are effectively propped open, the propping action is stably carried out, the surgical operation is facilitated, and the surgical efficiency is improved.

Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and it should be understood by those skilled in the art that: the same modifications or substitutions can be made without departing from the spirit of the technical solution of the present invention and still fall within the scope of the present invention.

Claims (5)

1. The utility model provides a parallel opening pliers, includes left handle and right handle, its characterized in that: the left handle and the right handle are hinged through a handle shaft, the head of the left handle is rotatably connected with a left clamp piece, the head of the right handle is rotatably connected with a right clamp piece, the left clamp piece and the right clamp piece are symmetrically arranged in parallel, the inner sides of the left clamp piece and the right clamp piece are close to each other, the front ends of the left clamp piece and the right clamp piece are provided with bending portions which are bent inwards, the tail ends of the bending portions are provided with U-shaped grooves, the middle portions of the left clamp piece and the right clamp piece are both provided with slotted holes, the two ends of an X-shaped connecting piece are rotatably connected in the slotted holes through pins, the other two ends of the X-shaped connecting piece are rotatably connected to the heads of the left handle and the right handle, and the X-shaped connecting piece can slide back and.

2. A parallel distracting forceps according to claim 1, wherein: a first arc-shaped boss is arranged in the middle of the left handle, and a handle shaft hole is formed in the first arc-shaped boss; the middle part at right handle is provided with second arc boss, is provided with the handle shaft hole on the second arc boss, and the side of second arc boss is provided with the arc wall, first arc boss embedding arc wall, the handle shaft passes the handle shaft hole of first arc boss and second arc boss.

3. A parallel distracting forceps according to claim 1, wherein: the X-shaped connecting piece is formed by hinging a first connecting rod and a second connecting rod.

4. A parallel distracting forceps according to claim 1, wherein: the inner sides of the rear parts of the left handle and the right handle are respectively fixedly connected with a left spring piece and a right spring piece, and the free ends of the left spring piece and the right spring piece are mutually abutted.

5. A parallel distracting forceps according to claim 1, wherein: an open slot is formed at the tail end of the left handle, and a latch is arranged in the open slot; the tail end of the right handle is provided with a clamping groove which is opened towards the inner side, a locking tooth is hinged in the clamping groove, and the hinged end of the locking tooth is supported by a locking tooth spring piece which is fixed on the inner side of the right handle.

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