CN2193726Y

CN2193726Y - Universal fracture reposition external fixator

Info

Publication number: CN2193726Y
Application number: CN 94218921
Authority: CN
Inventors: 曾祥伟; 周铁军; 李林; 曹庆浩; 蒋卫平; 韦冰丹; 黄克; 杨晓明
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-13
Filing date: 1994-08-13
Publication date: 1995-04-05
Anticipated expiration: 2004-08-13

Abstract

The utility model provides a universal fracture reposition external fixer with a spherical surface, adopting two full thread screw rods; the upper and the lower parts are respectively movably fixed with a sliding arc and a sliding block; a steel needle fixing clamp in a groove of the sliding arc and the sliding block are used for clamping a bone needle; the middle part of the screw rod is provided with a rotatable universal adjuster with a spherical surface. The universal adjustment of the spherical surface can cause the reposition of the displaced fracture to obtain the ideal reposition; a frame is formed by the combination of double rods and fixing needles, the fixation is firm and reliable, promoting the rapid healing of fracture; the used steel needle is small, reducing the infection chance of a pinhole, reserving enough space, and being convenient for changing dressings.

Description

Universal fracture reposition external fixator

This utility model relates to a kind of medical apparatus and instruments, the universal external immobilizer for fracture restitution of especially a kind of sphere.

Fracture external fixator starts from 1840, French at that time surgeon Maqaique at first penetrates the nearly heart and the distal end of fracture of tibia with 2 pieces big nail percutaneous, the outer nail tail of skin is fixed on the metal tape, and the belt that metal tape is connected in adjustable Zhou Jing is again regulated and control the folding end displacement of bone.Rigaud in 1850 hammers into the bone eagle respectively with 2 pieces of screws and chews fracture two bone sections, draws bone stump and wire binding nail tail over to one's side with fixing fracture with fly.The Belgian orthopedist Labotte that is called as the father of system's fracture surgery, the external fixator that designed various different sizes in 1902, the different parts that is used to fracture.The Monteggia reduction fixture device of China Academy of TCM's Meng and release, the nineteen eighty-two Da Li of the army of PLA plays great professor and develops the circular groove type external fixator, and the single armed fracture external fixator of Shanghai Liu Yuan professor Yu Zhongjia development etc. has all been obtained reasonable external fixation of fracture effect.The arduous zigzag effort of a century and a half orthopedics expert makes fracture external fixator that very big development arranged, and does not come out but up to the present still there is optimal external immobilizer for fracture restitution.Wherein the most thorny issue is that nearly all external fixator is not ideal enough to resetting of fracture, most external fixators are considered fixing more, reduction is considered incomplete, the required fixed steel pin that has is big (6mm) too, and pin hole infects easily, and the motility that has is not enough, fixing not firm, fixed mount frangibility or the like still needs further exploratory development, and is in addition perfect.

The purpose of this utility model provides and a kind ofly can make resetting of displacement fracture reach ideal by the sphere universal adjustment to reset, adopt two bars to add locking pin and be coupled to framework, fixed stably reinforcing leaned on, the little minimizing pin tract infection of draw point, the universal external immobilizer for fracture restitution of sphere easy to use.

Principle of the present utility model is to adopt spherical structure, mobility is big, can the regulated at will angle, designed the structure that two balls are embraced, by regulating the reduction that this structure just can reach the reduction of the fracture, semilune draw point holder can prevent the bone rotation, two bars adopt full thread, fixation, and full thread arbitrarily tractive prolongs or compression, make the fracture end close proximity, promote the fracture pairs of bit line.Two bars interlink into permanent frame with nearly distal bone round needle, can avoid rotation, keep fracture end that certain stress is arranged, and make it to meet the growth requirement of biomechanics.

This utility model is by screw rod, formations such as the universal adjustor of sphere, sliding shoe, sliding arc, draw point fixation clamp, osseous pin.

Elaborate below in conjunction with accompanying drawing.

Fig. 1 is this utility model structural representation.

Fig. 2 is this utility model vertical view.

This utility model adopts two screw rods (3), full thread, as extending, compressing, orthopedic track, tuning joint (4) is arranged in the middle of the every bar (3), at the tuning joint the universal adjustor of rotating sphere (5) is housed, it is the two balls types of embracing, and by spherical rotation fracture is resetted.The screw rod of two correspondences (3) top and the bottom movable respectively fixedly semilune sliding arc (2) and sliding shoe (7), sliding arc (2) groove internal fixation has the draw point fixation clamp (1) that is used for clamping osseous pin (6), this folder can be worn the osseous pin angular movement position of putting by intersection, osseous pin firmly is fixed in sliding arc, but the osseous pin of draw point fixation clamp clamping 1～3.5mm; Porose in the middle of the sliding shoe (7), be used to pin the parallel osseous pin (6) that penetrates fracture end, (8) are fractured bones.

The universal external immobilizer for fracture restitution of this sphere, universal adjustment by sphere can make resetting of displacement fracture reach ideal to reset, avoid operating on open reduction to fix, reduce patient's misery, severe open fracture patient particularly, by using the fixation for treatment of external fixator, preserved limbs, avoid the hardship of amputation.Utilize two bars to add locking pin and be coupled to framework, fixed stably reinforcing leaned on, patient can descend ground movable by tape holder, promote fracture healing rapidly, this utility model adopts 1～3.5mm small steel needle 6mm draw point more commonly used to significantly reduce the chance of pin tract infection simultaneously, and leave enough spaces, conveniently change dressings.Clinical practice, effect is satisfied.

Claims

1, the universal external immobilizer for fracture restitution of a kind of sphere is made of screw rod, sliding shoe, sliding arc, draw point fixation clamp etc., it is characterized in that:

There is tuning joint (4) centre of the full thread screw rod (3) of a, two correspondences, at the tuning joint the universal adjustor of rotating sphere (5) is housed, and (5) are the two balls types of embracing;

B, screw rod (3) top and the bottom movable respectively fixedly semilune sliding arc (2) and sliding shoe (7), sliding arc (2) groove internal fixation has the draw point fixation clamp (1) that is used for clamping osseous pin (6), porose in the middle of the sliding shoe (7), be used to pin the parallel osseous pin (6) that penetrates fracture end.