CN2368469Y

CN2368469Y - Detacher for bone fracture plate

Info

Publication number: CN2368469Y
Application number: CN 99210155
Authority: CN
Inventors: 宁少伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-13
Filing date: 1999-05-13
Publication date: 2000-03-15
Anticipated expiration: 2009-05-13

Abstract

The utility model discloses a special tool for disassembling a bone connecting plate in an orthopaedic operation. Thread holes matched with a left and a right thread sections 31, 32 on a screw rod 30 are arranged on a left and a right clamping push rods 10, 20 which are matched with a guide rod 40. If the screw rod 30 is rotated, the left and the right clamping push rods 10, 20 are oppositely gathered or separated within the limit of the guide rod 40. Cuneal conical heads 11, 21 which are pointed each other on a big body arranged on the lower ends of the left and the right clamping push rods 10, 20 extend to a gap between the bone connecting plate and a skeleton surface. In addition, the cuneal conical heads are gradually supported in a clamping and pushing mode and are finally disengaged from a skeleton. The utility model has the advantages of convenient operation, and rapid and reliable disassembly.

Description

Folder top formula orthopaedics blade plate puller

This utility model discloses the apparatus that a kind of surgery is used, and specifically is a kind of device that is used to dismantle the orthopaedics blade plate.

In orthopaedics was clinical, for can be in time with the knochenbruch fix in position, blade plate be a kind of synthetism member commonly used, treat the knochenbruch healing after, by the method for operation it is taken out again.Because a variety of causes, blade plate takes out sometimes and is not easy, and causes to get wrench art overlong time, has so just increased misery to patient.At present, the taking-up of blade plate does not have assorted petty good method, and employed is the general utility tool of pliers, screwdriver and so on.

The purpose of this utility model is to design a kind of taking-up utensil of blade plate, to make things convenient for, promptly blade plate to be taken off.

For achieving the above object, the technical solution adopted in the utility model is: a kind of folder top formula orthopaedics blade plate puller, left and right folder push rod are provided with screwed hole and cooperate with left and right hand thread section on the screw rod, have pilot hole to cooperate with guide post on the left and right folder push rod; There is the conehead of the wedge-like of pointing to the other side substantially the lower end of described left and right folder push rod.

During rotating screw bolt, set left and right hand thread section drives left and right folder push rod respectively and does close or isolated movement on it, when mobile, guide post will limit left and right folder push rod and move in same plane, when two folder push rods near the time its lower end conehead will be gradually near and extend in the slit between blade plate and the bone surface, the conehead position will force blade plate and bone surface to break away from when both further close up, and at last its dismounting be taken off.

This utility model has reduced the operating time of dismounting blade plate greatly for the clinical middle blade plate that takes out of orthopaedics provides a kind of convenient and reliable taking-up instrument, has reduced patient's misery effectively.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A--A cutaway view among Fig. 1;

Fig. 3 is the B--B cutaway view among Fig. 1;

Fig. 4 is to use state reference map;

Fig. 5 is the A--A cutaway view among Fig. 4.

The utility model is described in further detail below in conjunction with drawings and Examples.

As shown in Figure 1, this utility model comprises left and right two

folder push rods

10,20, being respectively equipped with left and right

hand thread section

31,32 set on the left and right both sides shaft on screwed hole and the screw rod 30 on it cooperates, there is pilot hole to cooperate on the left and right

folder push rod

10,20 with guide post 40, as shown in Figure 2, there is the conehead 11,21 that points to the other side substantially the lower end of left and right

folder push rod

10,20, and the biasing that misplaces each other of the awl point 111,211 of conehead 11,21 is referring to Fig. 1,2,3.

As shown in Figure 1, the screwed hole that cooperates with left and right

hand thread section

31,32 set on the described screw rod 30 is arranged on the middle part of left and right

folder push rod

10,20, the top of left and right

folder push rod

10,20 is offered quadrate pilot hole and is cooperated with guide post 40, screw rod 30 is parallel with guide post 40, under the effect of screw rod 30 and guide post 40, left and right

folder push rod

10,20 moves in same plane.Referring to Fig. 1,2,3,

folder push rod

10,20 lower end coneheads 11,21 are substantially from the end taper and carry out the transition to the wedge shape that root section increases gradually, both are basic identical and be slick curved surface for the height of its bottom surface 112,212, and two awl points 111,211 lay respectively at the both sides, plane at above-mentioned guide post 40 and place, screw rod 30 center.

As seen, the termination that screw rod 30 is positioned at

folder push rod

10,20 outsides is connected with handle 33 in Fig. 1, and the middle part of guide post 40 upwards is connected with a handgrip 41.

Referring to Fig. 1,2,3, the cross sectional shape of the conehead 11,21 of

folder push rod

10,20 bottoms can be multiple geometric cross section, as circular, oval, camber line tetragon, comparatively ideal shape is the wedge shape that is substantially tetrapyamid shape, and its awl point 111,211 positions are inserted in the thin narrow slit; Have suitable intensity again, also help pressing from both sides the apical grafting hone lamella and it is lifted from bone surface.

Manipulate method below in conjunction with the description of drawings utility model.

Each component sets is dressed up form shown in Figure 1, should adjust a left side before using, right two folder and

bars

10,20 conehead 11, distance between 21 makes it be slightly larger than the width of blade plate B, referring to Fig. 4,5, handle 33 on the turn screw rod 30, make a left side, right

folder push rod

10,20 is close to each other and close up gradually, its awl point 111,211 stretch into the place, slit between blade plate B and the skeleton A surface gradually, when further turn handle 33, two awl points 111,211 further, blade plate B is then at conehead 11,21 upper face 113, be lifted gradually under 213 the guiding, because two coneheads 11, the 21st, the design of dislocation offset, both remain suitable locus to each other in closing up process, not only can guarantee a left side, right two coneheads 11,21 fully close up so that blade plate B lifts enough height, simultaneously can dodge the screw C that is used to install blade plate B again, at last screw C and blade plate B be disassembled.

Claims

1. folder top formula orthopaedics blade plate puller is characterized in that: left and right folder push rod (10), (20) are provided with screwed hole and cooperate with left and right hand thread section (31), (32) on the screw rod (30); There is pilot hole to cooperate on left and right folder push rod (10), (20) with guide post (40); There are conehead (11), (21) of the wedge-like of pointing to the other side substantially the lower end of described left and right folder push rod (10), (20).

2. folder according to claim 1 top formula orthopaedics blade plate puller, it is characterized in that: go up the middle part that set left and right hand thread section (31), screwed hole that (32) cooperate are arranged on left and right folder push rod (10), (20) with described screw rod (30), the top of left and right folder push rod (10), (20) is offered quadrate pilot hole and is cooperated with guide post (40), screw rod (30) is parallel with guide post (40), conehead (11), (21) biasing that misplaces each other.

3. folder according to claim 1 and 2 top formula orthopaedics blade plate puller, it is characterized in that: described folder push rod (10), (20) lower end conehead (11), (21) are substantially from the end taper and carry out the transition to the wedge shape that root section increases gradually, its bottom surface (112), (212) are slick curved surface, and two awl points (111), (211) lay respectively at the planar both sides of above-mentioned guide post (40) and screw rod (30) place, center.

4. folder according to claim 1 and 2 top formula orthopaedics blade plate puller, it is characterized in that: the termination that screw rod (30) is positioned at folder push rod (10), (20) outside is connected with handle (33), the middle part of guide post (40) upwards is connected with a handgrip (41), and described conehead (11), (21) are substantially the wedge shape of tetrapyamid shape.