CN2407723Y

CN2407723Y - Geometric shape bone external fixer

Info

Publication number: CN2407723Y
Application number: CN 00213185
Authority: CN
Inventors: 杨建安
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-17
Filing date: 2000-01-17
Publication date: 2000-11-29
Anticipated expiration: 2010-01-17

Abstract

The utility model relates to a geometric shape bone external fixer. The end parts of an aluminum body 1 of a bracket and a telescopic body 15 are provided with a fastening core 8, and the spherical end of a connecting rod 10 of the bracket can rotate in the fastening core 8 which is fixed by a connecting nut cap 9; fixing frames I11 and II 18 which are fastened by fixed screw bolts 12 are sheathed on the connecting rod 10 of the bracket, the fixing frames I11 and II 18 can rotate and move around the connecting rod 10, and top threads 13 are arranged on the fixing frames I11 and II 18.

Description

A kind of geometric form bone external fixator

This utility model relates to a kind of geometric form bone external fixator technical field.

The major defect that the one-sided bone external fixator that uses at present exists is: stability is bad, complicated operating process, and project organization does not meet the biomechanics anatomical features, makes the fracture site rehabilitation be subjected to very big influence owing to reinforcing not according to the skeleton physiology camber line.

The purpose of this utility model is a kind of geometric form bone external fixator of design, is made up of support body, rack rod formula gimbal suspension and fixed mount etc., and structural design meets the biomechanics anatomical features, according to skeleton physiology camber line reinforce fractured position, makes the rapid rehabilitation of patient.

This utility model is achieved in that extrusome 15 inserts bracket aluminum body 1, in extrusome 15 and bracket aluminum body 1, stud with eccentric bushing 6, fixed bar 18 and motion bar 17 insert respectively in the eccentric bushing 6, jackscrew 14 on having gathering sill 16 on the extrusome 15 and being fixed on bracket aluminum body 1 cooperates, regulate the connecting rod 5 terminal fixed bars 2 that insert, regulating in the connecting rod 5 has clamp nut 4 to cooperate with adjusting screw(rod) 7, in the adjusting connecting rod 5 that motion bar 17 inserts between clamp nut 4 and adjusting screw(rod) 7 medicated caps, it is characterized in that: be provided with tightening core 8 at bracket aluminum body 1 and extrusome 15 ends, rack rod 10 pommels can be rotated in tightening core 8, by the fixing tightening core 8 of attaching nut's medicated cap 9, be with fixed mount I11 and fixed mount II18 on the rack rod 10 and can rotate around it and move and fastening, on fixed mount I11 and the fixed mount II18 jackscrew 13 is arranged by set bolt 12.

The utility model has the advantages that: project organization is simple, can dismounting make up, and adapts to all kinds of long bone shaft fractures, can comply with body mechanics's anatomical features; Simple to operate, can finish fixing half an hour; This holder and spiral shell pin and skeleton three be combined into the solid geometry of an anti-stress state, have good anti-rotation and anti-lateral displacement, this holder is brought up to the three-dimensional fixed conception of geometric form with bone external fixation technology, meets fixedly characteristics of biomechanics and skeleton physiology camber line.

Below in conjunction with accompanying drawing, this utility model is described further with embodiment:

This accompanying drawing is this utility model structural representation.

In the accompanying drawing: 1, bracket aluminum body, 2, fixed bar, 3, regulating sleeve, 4, clamp nut, 5, regulate connecting rod, 6, eccentric bushing, 7, adjusting screw(rod), 8, tightening core, 9, attaching nut's medicated cap, 10, rack rod, 11, fixed mount I, 12, set bolt, 13, jackscrew, 14, jackscrew, 15, extrusome, 16, gathering sill, 17, motion bar, 18, fixed mount II.

X line or direct-view be the reduction fracture down, be first to thread a needle a little from fracture end 4-5cm place, cut skin with sharp knife, separate subcutaneous tissue, locating cone and locating sleeve are sent to bone surface through otch, make it vertical with the key longitudinal axis, light retaining ring pipe makes it fixing and bone surface, take out fixed cone, drill bit drills through both sides cortex, measures depth of needle, is screwed into the spiral shell pin, be as the criterion to pass two screw threads of offside cortex, second piece of spiral shell pin in kind is installed, is connected and fixed device, first and second pieces of spiral shell pins insert fixed mount I11 simply reset fixing after, positioning collet is installed, locating sleeve and locating cone after the boring, install the 3rd, four pieces of spiral shell pins, third and fourth piece of spiral shell pin inserted fixed mount II18 again and tighten by jackscrew 13, regulate rack rod 10 and fixed mount II18 and make and meet the requirement of skeleton physiology camber line fully, and with fracture stress inverse state, tighten set bolt 12 subsequently, attaching nut's medicated cap 9 and jackscrew 14, this moment, fracture site had good stability, and reached the side instability without spin.

Claims

1, a kind of geometric form bone external fixator, extrusome (15) inserts bracket aluminum body (1), in extrusome (15) and bracket aluminum body (1), stud with eccentric bushing (6), fixed bar (18) and motion bar (17) insert respectively in the eccentric bushing (6), jackscrew (14) on having gathering sill (16) on the extrusome (15) and being fixed on bracket aluminum body (1) cooperates, regulate the terminal fixed bar (2) that inserts of connecting rod (5), regulating in the connecting rod (5) has clamp nut (4) to cooperate with adjusting screw(rod) (7), in the adjusting connecting rod (5) between motion bar (17) insertion clamp nut (4) and adjusting screw(rod) (7) medicated cap, it is characterized in that: be provided with tightening core (8) at bracket aluminum body (1) and extrusome (15) end, rack rod (10) pommel can be rotated in tightening core (8), by the fixing tightening core (8) of attaching nut's medicated cap (9), be with fixed mount I (11) and fixed mount II (18) on the rack rod (10) and can rotate around it and move and fastening, on fixed mount I (11) and the fixed mount II (18) jackscrew (13) is arranged by set bolt (12).