CN2269834Y - Multifunctional external fixer for distal end of humerus - Google Patents

Abstract

The utility model relates to a multifunctional external fixer for the lower end of the humerus, which is composed of two side arms with the same structure. Each side arm is composed of an upper arm and a lower arm which are connected by a sliding key and a length-regulating mechanism, the upper ends of the two upper arms are provided with semicircular fixing plugs and needle holes which are mutually matched with each other, and the lower arms are provided with fixed needle holes which form an included angle of 30 DEG to 50 EEG with the lower arms. The utility model is suitable for miscellaneous fractures at the lower end of the humerus, can fix conveniently and effectively without plastering, and can adjust a fracture end in time so as to make the fracture end contact with the utility model closely. When the fracture is healed, the treatment of fracture-healing is carried out with soft tissue rehabilitation synchronously; thereby, time in hospital is shortened, and the pain of secondary operation does not need to be experienced as an inner fixing object for comminuted fracture does not need to be put in by operation.

Description

Humerus lower end multifunctional external fixation apparatus

This utility model relates to and is used for the reseting fracture limbs and makes it stationary device.

At present the Therapeutic Method to fracture of lower end of humerus is earlier fracture site to be resetted, execute plaster bandage and fix outward then, up to fracture site healing back folding except that plaster bandage.Sometimes, also because of fracture end engage inaccurate, need carry out that secondary is corrected and healing.During with plaster fixation, can not carry out the activity of soft tissue and take exercise, soft tissue rehabilitation simultaneously causes joint stiffness, and the hospital stays is long.When running into comminuted fracture, must undergo surgery, cut skin, separating blood vessel, nerve, soft tissue are put into fixture, and wound area is big, and it is slower to fully recover, and easily causes complication.Comminuted fracture will be fixed with inside-fixture, after the healing, must carry out second operation and take out, and patient is painful big.Children humeral supracondylar fracture, intraarticular, valgus deformity when tending to cause are difficult in time correct treatment.

The purpose of this utility model is to provide a kind of humerus lower end multifunctional external fixation apparatus, and this fixed mount is applicable to humerus lower end all kinds fracture (descending Y shape and various comminuted fracture on the humerus between fracture, condyle of humerus).Can be fixing effectively easily to fracture portions, and can in time be adjusted easily, fracture end is closely contacted, primary union; After using this fixed mount, can make the patient carry out functional exercise early, union of fracture and soft tissue rehabilitation are carried out synchronously, avoid joint stiffness, shorten the hospital stays; When comminuted fracture, also osculum of incision of skin need only be inserted locking pin on skeleton, can be fixed, wound is little, has avoided the damage to nervus vasculairs, generally can not produce complication, and healing is very fast; To children humeral supracondylar fracture, can rely on the regulating action of fixed mount, correct the elbow joint valgus deformity, processing ease.

This utility model humerus lower end multifunctional external fixation apparatus is achieved in that 2 essentially identical side arms of structure is set, every side arm is made of upper arm and underarm again, be connected with chute with feather key between upper arm and the underarm, and link to each other with length adjustment mechanism with leading screw or tooth bar; Article 2, the upper end of upper arm is provided with the semicircle gim peg, the diameter of semicircle gim peg and the longitudinal center line of side arm are 15 ° of-25 ° of angles, its circle centre position is provided with fixedly pin hole of near-end, and the semicircle gim peg of left and right sides side arm is provided with the interface that matches each other, and spliced gim peg is connected and fixed with screw; Be equipped with fixedly pin hole of far-end on 2 underarms, this pin hole and underarm longitudinal center line are 30 ° of-50 ° of angles, with far-end fixedly the pin hole vertical direction install fastening bolt; Said semicircle gim peg, it is shaped as the hemicycle cylinder, or the similar hexahedron of shape, half of body or cydariform from all directions with it.

The multi-functional fixed mount in this humerus lower end in use, earlier under fluoroscopic machine with the fracture site closed reduction, will suffer from limb elbow position with the rib hands and fix.Then with external fixer assembling (even the gim peg amalgamation of two side arms upper end and fix) with 2 screws, place elbow after, far-end is fixedly penetrated bone portion locking pin (being the far-end locking pin) in the pin hole, and it is gone into condyle portion with hammering.After 2 bone portion locking pins are fixing, on the skin of gim peg correspondence, mark.The gim peg of amalgamation is opened again, cut osculum according to skin marker, soft tissue reaches periosteum in the separating cut, inserts then and bores sleeve.Close up 2 semicircle gim pegs; to bore the sleeve clamping; boring under the sleeve protection; on lesion of lower segment of humerus, hole, be screwed into the near-end locking pin then, the skin osculum is sewed up; adjust the length adjustment mechanism on 2 side arms; close up upper end semicircle gim peg, near-end locking pin borehole jack is loaded on the near-end locking pin, be connected and fixed 2 semicircle gim pegs with screw.With fastening bolt stationary remote locking pin.Perspective check at last, if valgus deformity in the elbow occurs, the length available governor motion is corrected it by flexible side arm length.This fixed mount is applicable to humerus lower end all kinds fracture, fixing effectively easily by three locking pins to fracture site, 3 lines and three nail extended lines of three nails, and three pin extended lines and side arm form a plurality of trianglees, be rhizoma sparganic dimension spline structure, make the fixing-stable of skeleton, reliable, and can in time adjust.Avoided heavy plaster fixation, do not influenced blood circulation and other soft tissue vigor, made the patient can carry out functional exercise early, union of fracture and soft tissue rehabilitation are carried out synchronously, shorten the hospital stays; Also needn't undergo surgery when comminuted fracture and put into fixture, osculum of incision of skin need only be adorned locking pin on skeleton, fracture site can be fixed, wound is little, has avoided the damage to nervus vasculairs, generally complication can not take place, and healing is very fast; To children humeral supracondylar fracture, can rely on the regulating action of two side arms, correct the elbow joint valgus deformity, processing ease to the condyle of humerus syntripsis, adopts this can reach anatomical reduction, can avoid second operation to get the misery of inside-fixture.

The utility model is described in further detail below in conjunction with accompanying drawing

Fig. 1 is this utility model structural representation

Fig. 2 is this utility model fixed mount semicircle gim peg splicing sketch map

Fig. 3 is a near-end locking pin shape sketch map

Fig. 4 is external fixer and adjustable bracing piece connection diagram

This utility model humerus lower end multifunctional external fixation apparatus structure as shown in Figures 1 and 2, this external fixer is provided with 2 essentially identical side arms of structure (left arm and right arm), every side arm is made of upper arm 7,13 and underarm 2,20 again, be connected with chute 24,21 with feather key 25,16 between upper arm and the underarm, and link to each other with length adjustment mechanism with leading screw 5,15 or tooth bar; Article 2, the upper end of upper arm is provided with semicircle gim peg 8,12; The angle α of the diameter of 2 gim pegs and the longitudinal center line of side arm ₁, α ₂Be 15 °-25 °, its circle centre position is provided with fixedly pin hole 10 of near-end, and this pin hole is that 2 gim peg splicing backs form, and the semicircle gim peg of left and right sides side arm is provided with the interface 11,22 that matches each other, and spliced gim peg is connected and fixed with screw 9,23; 2 underarms are provided with fixedly pin hole 1,18 of far-end, this pin hole and underarm longitudinal center line are 30 ° of-50 ° of angles, with far-end fixedly the pin hole vertical direction install fastening bolt 1,19, as length adjustment mechanism multiple mode is arranged, the most frequently used is the mode that adopts leading screw 5,15 and axle sleeve 4,17 and screw cover 6,14 couplings, one end of leading screw is provided with inner hexagonal hole or wrench, and rotational lead screw is the length of scalable side arm; The mode of also available tooth bar coupling gear, this mechanism makes length adjustment convenient, laborsaving, is convenient to trace adjustment.As one of embodiment, make fixedly pin hole 10 semicirculars in shape of near-end, and the near-end locking pin 26 match be set, this locking pin as shown in Figure 3, its tail end 27 be half-cylindrical and near-end fixedly pin hole mate, its head 28 is taper and is provided with screw thread.The favourable locking pin of this kind structure is fixedlyed connected with pin hole, installs on human body and stablizes, and is difficult for deflection and moves.As two of embodiment, can respectively cut out one 5 °-15 ° of breach along diameter place face at 2 semicircle gim pegs, it highly is the gim peg height half, form step-like interface, left and right sides gim peg interface matches each other, and this kind form can avoid solid bolt to move along the joint face direction, and makes easily.For under the situation of comminuted fracture, Y type fracture, T type fracture between condyle of humerus, play fixation better, as three of embodiment, the bracing piece that connects 2 underarms is set, this bracing piece links to each other with the underarm bottom with the thread bush mode with bolt; For easy to use, adjustable bracing piece as shown in Figure 4 also can be set, as four of embodiment, be provided with bracing piece support 29, and the adjustable bracing piece that is made of thread bush 31, screw rod 30,32 is set in the lower inside (promptly in the 2 side arm angles) of 2 underarms.This kind structure can make the patient in functional exercise, guarantees the stability of external fixer.

Claims (5)

1, a kind of humerus lower end multifunctional external fixation apparatus, it is characterized in that: 2 essentially identical side arms of structure are set, every side arm is made of upper arm (7,13) and underarm (2,20) again, be connected with chute with feather key between upper arm and the underarm, and link to each other with length adjustment mechanism with leading screw or tooth bar; Article 2, the upper end of upper arm is provided with semicircle gim peg (8,12), the diameter of semicircle gim peg and the longitudinal center line of side arm are 15 ° of-25 ° of angles, its circle centre position is provided with fixedly pin hole of near-end, the semicircle gim peg of left and right sides side arm is provided with the interface that matches each other, and spliced gim peg is connected and fixed with screw; Article 2, be equipped with fixedly pin hole of far-end on the underarm, this pin hole and underarm longitudinal center line are 30 ° of-50 ° of angles, with far-end fixedly the pin hole vertical direction install fastening bolt; Said semicircle gim peg, it is shaped as the hemicycle cylinder, or the similar hexahedron of shape, half of body or cydariform from all directions with it.

2, humerus according to claim 1 lower end multifunctional external fixation apparatus, it is characterized in that: near-end is the pin hole semicircular in shape fixedly, and near-end locking pin tail end is half-cylindrical and semicircle fixedly pin hole and mates, and its head is taper and is provided with screw thread.

3, humerus according to claim 1 lower end multifunctional external fixation apparatus, it is characterized in that: 2 semicircle gim peg diameters respectively cut out one 5 °-15 ° of breach on the whole, it highly is the gim peg height half, forms step-like interface, and left and right sides gim peg interface matches each other.

4, humerus according to claim 1 lower end multifunctional external fixation apparatus is characterized in that: the bracing piece that connects 2 underarms is set, and this bracing piece links to each other with the underarm bottom with the thread bush mode with bolt.

5, humerus according to claim 1 lower end multifunctional external fixation apparatus, it is characterized in that: the lower inside of 2 underarms is provided with the bracing piece support, and the adjustable bracing piece that is made of thread bush 31, screw rod 30,32 is set.

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