CN108618839B

CN108618839B - Fracture reduction fixer

Info

Publication number: CN108618839B
Application number: CN201810529148.2A
Authority: CN
Inventors: 于大鹏; 于建林; 赵锦阳
Original assignee: WENDENG OSTEOPATH HOSPITAL
Current assignee: WENDENG OSTEOPATH HOSPITAL
Priority date: 2018-05-29
Filing date: 2018-05-29
Publication date: 2023-09-22
Anticipated expiration: 2038-05-29
Also published as: CN108618839A

Abstract

The invention discloses a fracture reduction fixator which comprises a clamping part and a handle, wherein the clamping part comprises a lower bone holding claw and an upper bone holding claw, a clamping opening for a bone to pass through is formed between the lower bone holding claw and the upper bone holding claw, the handle comprises a first handle and a second handle, the lower bone holding claw is connected with the first handle, the upper bone holding claw is connected with the second handle, the first handle and the second handle are rotationally connected for adjusting the size of the clamping opening, and the fracture reduction fixator is characterized in that the upper bone holding claw and the lower bone holding claw are of a C-shaped tubular structure, the C-shaped tubular structure comprises a frame and a net wire, the frame consists of a proximal side, a distal side and two C-shaped clamping sides connected with the proximal side and the distal side, the proximal side is fixed with the handle, the distal side is opened and closed to form the clamping opening, the net wire is fixed on the frame in a staggered manner, and the net wire forms a grid. The bone holder has the advantages that the clamping surface is long tube-shaped, the long tube-shaped can play roles in resetting and fixing broken ends, the fixing effect is good, and the operation is free from shielding and saves time and labor.

Description

Fracture reduction fixer

Technical Field

The invention relates to the field of medical appliances, in particular to a fracture reduction fixator.

Background

Bone holders are commonly used instruments in orthopedic surgery to reduce and hold fractures for internal fixation. The existing bone holder has a very narrow clamping surface, two bone holders are required to hold the distal end and the proximal end of the fracture for clamping respectively, two hands are required to operate, an assistant is required to hold the bone holder for resetting after resetting, and an operator finishes the internal fixation operation. The bone holder can only play a clamping role and cannot be reset, and various methods such as two-hand rotation, lifting and pushing are needed during reset, and because limbs are heavy, the reset operation is very laborious, once an operator is tired, the operator easily loses control position, and the damage and the operation time are increased by resetting again. In addition, the optimal needle penetration or screw fixation position may be blocked by the bone holder, and the needle may not be penetrated.

Disclosure of Invention

The invention aims to overcome the technical defects and provide a fracture reduction fixator which can perform multiple functions of reduction, fixation and clamping and can be operated by one hand.

The fracture reduction fixer comprises a clamping part and a handle, wherein the clamping part comprises a lower bone holding claw and an upper bone holding claw, a clamping opening for a bone to pass through is formed between the lower bone holding claw and the upper bone holding claw, the handle comprises a first handle and a second handle, the lower bone holding claw is connected with the first handle, the upper bone holding claw is connected with the second handle, the first handle and the second handle are rotationally connected for adjusting the size of the clamping opening, the fracture reduction fixer is characterized in that the upper bone holding claw and the lower bone holding claw are of a C-shaped tubular structure, the C-shaped tubular structure comprises a frame and a net wire, the frame is composed of a proximal side, a distal side and two C-shaped clamping sides connected with the proximal side and the distal side, the proximal side is fixed with the handle, the distal side is opened and closed to form the clamping opening, the net wire is fixed on the frame in a staggered manner, and a grid is formed between the net wires.

The C-shaped clamping edge is provided with a steel plate placing groove at one side of the near end edge.

And a locking mechanism is arranged between the first handle and the second handle and used for keeping the opening and closing distance of the first handle and the second handle, so as to ensure the opening sizes of the lower bone holding claw and the upper bone holding claw.

The locking mechanism comprises a locking rack fixed with the first handle or the second handle and a buckle fixed with the second handle or the first handle, and the buckle is clamped with teeth on the locking rack.

The locking mechanism comprises a fixing seat, a screw rod and a locking nut, wherein the fixing seat is arranged on the second handle, one end of the screw rod is connected with the fixing seat, the other end of the screw rod penetrates through a through hole in the first handle, and the locking nut is arranged on the screw rod outside the through hole.

The upper bone holding claw and the lower bone holding claw of the bone holder adopt C-shaped tubular structures, the formed clamping surface is long tubular, the long tubular structure can play roles in resetting and fixing broken ends, the length of the fixing part is long, the broken ends cannot be tilted, and the fixing effect is good; the mesh structure on the C-shaped tubular structure can lighten the weight of the instrument, simultaneously increases the friction area, increases the holding force, disperses the local pressure intensity, reduces the stimulation to periosteum, has no observation dead angle, can be operated from the mesh by threading and screw fixation, and is convenient to operate. After fixation, the steel plate is implanted along the steel plate chute, the steel plate is fixed on the bone surface without additional hands, and then screws are screwed, so that the operation is time-saving and labor-saving.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 shows a first embodiment of the present invention.

Fig. 3 is a second embodiment of the present invention.

Reference numerals illustrate: the clamping part 1, the lower bone holding claw 11, the upper bone holding claw 12, the 13 net wires, the 14 grid, the 15 frame, the 15a proximal side, the 15b, the 15dC clamping side, the 15c distal side, the 16 steel plate placing groove, the 17 clamping opening, the 2 locking part 21 buckle, the 22 locking rack, the 23 screw rod, the 24 locking nut, the 25 fixing seat, the 3 handle, the 31 first handle, the 32 second handle, the 33 annular handle and the 34 handle.

Detailed Description

As shown in fig. 1, the fracture reduction fixator comprises a clamping part 1 and a handle 3, wherein the clamping part 1 comprises a lower bone holding claw 11 and an upper bone holding claw 12, a clamping opening 17 for a bone to pass through is formed between the lower bone holding claw 11 and the upper bone holding claw 12, the handle 3 comprises a first handle 31 and a second handle 32, the lower bone holding claw 11 is connected with the first handle 31, the upper bone holding claw 12 is connected with the second handle 32, the first handle 31 and the second handle 32 are connected with each other through a pin shaft in a rotating way to adjust the size of the clamping opening 17, the upper bone holding claw 12 and the lower bone holding claw 11 are of a C-shaped tubular structure, the C-shaped tubular structure comprises a frame 15 and a net wire 13, the frame 15 consists of a proximal end edge 15a, a distal end edge 15C and two C-shaped clamping edges 15b and 15d which are connected with the proximal end edge 15a and the distal end edge 15C, the proximal end edge 15a is fixed with the handle 3, the distal end edge 15C is opened and closed to form the clamping opening 17, the net wire 13 is distributed and fixed on the frame 15 in a staggered way, and the net wire 13 forms a net wire 14 structure. Bone spicules and screws can be implanted into bone from the grid 14 without shielding the operative site.

In order to maintain the position of the lower jaw 11 and the upper jaw 12 fixed during the bone holding process and to ensure the clamping effect, a locking mechanism is provided between the first handle 31 and the second handle 32, and the locking mechanism may be provided in different manners. As shown in fig. 2, the locking mechanism includes a locking rack 22 and a buckle 21, the locking rack 22 is fixed with a second handle 32, the buckle 21 is fixed with a first handle 31, different teeth on the locking rack 22 are buckled with the buckle 21 in the opening and closing process of the first handle 31 and the second handle 32, the distances between the first handle 31 and the second handle 32 are different, and then the sizes of the clamping openings 17 between the lower bone holding claw 11 and the upper bone holding claw 12 are different, and the sizes of the clamping openings 17 can be maintained, so that the purpose of clamping and fixing is realized. For ease of handling, an annular handle 33 is provided at the end of the first handle 31 and a handle 34 is formed at the end of the second handle 32. As shown in fig. 3, the locking mechanism may also adopt another mode, where the locking mechanism includes a fixing base 25, a screw 23 and a locking nut 24, the fixing base 25 is disposed on the second handle 32, one end of the screw 23 is connected with the fixing base 25, the other end passes through a through hole (not shown in the drawing) on the first handle 31, and the locking nut 24 is disposed on the screw 23 outside the through hole. The lock nut 24 limits the position of the first handle 31 to keep the size of the nip 17 stable.

The C-shaped clamping edges 15b and 15d are provided with a steel plate placing groove 16 on one side of the proximal edge 15a, the steel plates can be placed in the steel plate placing groove 16, the bone holder can fix the steel plates on the bone surface without fixing the steel plates by hands, the steel plates are fixed firmly, and meanwhile, the operation surface is not blocked, so that the operation is affected.

The bone holder is of a net-shaped tubular clamp structure, compared with the traditional bone holder, the clamping area of the bone holder is large, the fixed tubular structure surrounds a broken bone, the bone holder is reliable in fixation and can be reset, the bone holder can be held by a left hand and a right hand through a needle after being clamped, and the bone holder can be operated by one person, so that the labor is saved.

Claims

1. The fracture reduction fixator comprises a clamping part and a handle, wherein the clamping part comprises a lower bone holding claw and an upper bone holding claw, a clamping opening for a bone to pass through is formed between the lower bone holding claw and the upper bone holding claw, the handle comprises a first handle and a second handle, the lower bone holding claw is connected with the first handle, the upper bone holding claw is connected with the second handle, the first handle and the second handle are rotationally connected for adjusting the size of the clamping opening, the fracture reduction fixator is characterized in that the upper bone holding claw and the lower bone holding claw are of a C-shaped tubular structure, the formed clamping surface is of a long tubular structure and comprises a frame and a net wire, the frame consists of a proximal side, a distal side and two C-shaped clamping sides connected with the proximal side and the distal side, the proximal side and the handle are fixed, the distal side is opened and closed to form the clamping opening, the net wire is fixed on the frame in a staggered manner, and the net wire forms a grid between the net wires; the C-shaped clamping edge is provided with a steel plate placing groove at one side of the near end edge.

2. The fracture reduction fixator of claim 1 wherein a locking mechanism is disposed between the first and second handles.

3. The fracture reduction fixator of claim 2 wherein the locking mechanism comprises a locking rack secured to the first handle or the second handle and a catch secured to the second handle or the first handle, the catch engaging a tooth on the locking rack.

4. The fracture reduction fixator according to claim 2, wherein the locking mechanism comprises a fixing base, a screw rod and a locking nut, the fixing base is arranged on the second handle, one end of the screw rod is connected with the fixing base, the other end of the screw rod passes through a through hole on the first handle, and the locking nut is arranged on the screw rod outside the through hole.