CN2388925Y

CN2388925Y - Semicircular fracture reduction fixator

Info

Publication number: CN2388925Y
Application number: CN 99246159
Authority: CN
Inventors: 张德清; 应有荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-10-09
Filing date: 1999-10-09
Publication date: 2000-07-26
Anticipated expiration: 2009-10-09

Abstract

The utility model relates to a semicircular fracture restoration fixator which carries out improvement to the original meng type semicircular external fixation frame for fracture restoration. The original middle slide rail and the original press cushion are changed into a sliding chute type middle semi ring and a double screw nail of which the thickness is 6 mm, and the utility model is directly fixed to the upper and the lower ends of a fracture. The sliding chute type middle semi ring and two full thread connection rods are mutually connected by combination blocks to forms a stable three-dimensional spatial structure, and thus, the strength of bending resistance and the strength of twisting resistance of the meng type semicircular external fixation frame for fracture restoration are enhanced. The utility model has the advantages of reliable curative effects, convenient wound treatment, easy forepart movement, fast fracture coalescence, good functional rehabilitation, etc.

Description

Semi-circular fracture reduction fixator

Fixed a kind of brandreth in addition after this utility model relates to fracture of tibia and fibula and resets.

The semi-circular reduction of the fracture external fixer of formula in the Meng, adopt up and down Kirschner wire and up and down semi-ring link to each other, make longitudinal traction by the flexible nut of adjusting support bar, the correction broken ends of fractured bone overlapping utilizes fixedly fracture end rotation displacement of pressure pad.This fixed mount apply to clinical after, little with its surgical injury face, union of fracture is fast etc., and advantage is widely used.But in long-term clinical application, we find that this fixed mount exists fixedly the fracture end rotation displacement and owes reliably, and the pressure pad time one is long, and skin is easily weighed wounded, sometimes can't use pressure pad after serious soft tissue injury and the open reduction operation, injured limb can not lie against on the bed.

The purpose of this utility model is that a kind of improved semi-circular fracture reduction fixator will be provided, and it can prevent effectively that the fracture end back that resets from producing rotation displacement phenomenon and operation back skin and weigh wounded with soft tissue injury and take place.

The purpose of this utility model is achieved in that and adds the middle semi-ring of two chute-types on the basis of original semi-ring up and down, former half bar whorl brace rod is made into the full thread connecting rod, replace pressure pad with the two drive screws of 6mm diameter, two drive screws and nut, combined block and middle semi-ring are connected, when two drive screws inboard being threaded into from fracture end 2cm before the tibia penetrates offside cortex and end, utilize combined block in the groove of middle semi-ring, to change again, correct the rotation displacement of fracture end, thereby guarantee not cause overlapping, the twisted displacement of fracture end after the operation.

This utility model can reach because only need do the transformation of the way slightly on the semi-circular reduction of the fracture external fixer of formula in the Meng, there is not the special facture requirement, because the plane that the end bone garden pin at plane that two drive screws and middle semi-ring constitute and holder two ends is formed constitutes stable 3-D solid structure.It is fixation not only, and counter-bending power is stronger, and the fixing hypozygal of going up can make patient's functional exercise of leaving the bed in early days, has promoted union of fracture and has hindered the limb joint function early recovery.

The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the plane graph according to the semi-circular fracture reduction fixator that the utility model proposes.

Fig. 1---a is the plane graph that semi-circular bone is torn the middle semi-ring of chute-type in the reduction fixture device open.

Fig. 1---b is the plane graph of two-end-point semi-ring in the semi-circular fracture reduction fixator.

Describe in detail according to detail and the working condition that the utility model proposes below in conjunction with Fig. 1.

This utility model comprises 9, two pieces of two drive screws 5 of the middle semi-ring of 4, two chute-types of 2, two end points semi-rings of two full thread connecting rods, 1, two butt osseous pin, and Fig. 1---the two drive screws 5 among a are in installment state.

With reference to Fig. 1, respectively there is a full thread connecting rod 1 on these holder both sides, two end points semi-rings 4 and two middle semi-rings 9 of chute-type are arranged respectively on full thread connecting rod 1, make them constitute a semicolumn bodily form, and according to the position needs, with setscrew nut 8 four semi-rings are fixed, then two combined blocks 3 of device on end points semi-ring 4 are fixed on the combined block 3 (as Fig. 1---shown in the b) with holding screw 7 after end osseous pin 2 passes tibia.Then, in the middle of chute-type, on the semi-ring 9 combined block 3 is set also, two drive screws 5 inboard being threaded into from fracture end 2cm before the tibia penetrates the offside cortical bone and ends, and be fastened on the combined block 3 with two drive screw adjusting nuts 6, pass through the change of combined block 3 in chute again, determine desired location, and fixed (as Fig. 1---shown in a) with setscrew nut 8.At this moment, if two drive screw 5 deflects tiltedly, just can be positioned on the middle semi-ring of chute-type (not drawing among the figure) as long as on combined block 3, install a combined block 3 again additional.So this holder is quite easy at rotation displacement fixing and the correction fracture end to the tibiofibula folding, each joint all adopts nut, screw to fix, and closes the internode mutual restriction, even single joint mobilization is arranged, also can not cause the fracture end displacement.

Claims

1, it is overlapping to correct the fracture of tibia and fibula end, particularly control a kind of semi-circular fracture reduction fixator of fracture end rotation displacement, this holder is by full thread connecting rod (1), end osseous pin (2), combined block (3), end points semi-ring (4), semi-ring (9) and two drive screw (5) are formed in the middle of the chute-type, it is characterized in that there is the middle semi-ring (9) of two chute-types in the holder stage casing, be fixed on two full thread connecting rods (1) with setscrew nut (8), two drive screws (5) are set on the semi-ring (9) in the middle of chute-type, two drive screws (5) front end penetrates tibia offside cortex to be ended, the rear end is connected with full thread connecting rod (1) with the middle semi-ring of chute-type (9) by combined block (3), has constituted a stable 3-D solid structure.

2, semi-circular fracture reduction fixator according to claim 1, the front end that it is characterized in that two drive screws (5) enter bone inside and are divided into and eat bone thread, and rear end part is general screw thread.