CN2130509Y

CN2130509Y - Steel plate fixator for fracture at automatic pressor body

Info

Publication number: CN2130509Y
Application number: CN 92227784
Authority: CN
Inventors: 谢志军; 阎德强
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-13
Filing date: 1992-07-13
Publication date: 1993-04-28
Anticipated expiration: 2002-07-13

Abstract

The utility model relates to an external automatically-pressurizing steel-plate fixture for fracture, composed of thereof screws, a steel-plate, screw caps and a three-purpose spanner. The fixture can be used for the external fixation for fracture which can not cause stress blocking and compressive osteonecrosis, and has firm fixation and little foreign-body reaction. The utility model is favorable to the bone-healing and can be dismantled outside the human body, and the internal-fixation device can be fetched out without another surgery for the patient.

Description

Steel plate fixator for fracture at automatic pressor body

This utility model belongs to the medical surgical instrument category, more precisely is the improvement that belongs to fracture fixation operating theater instruments technology, and its name is called the outer steel plate holder of the automatic press body of fracture.

In the prior art, the steel plate internal fixation operation all is that steel plate tightly is posted on the cortical bone traditionally, is screwed.For fixation, need screw-driving certainly will be subjected to oppression by fracture like this.This fixing to fracture generation stress concentration, cause stress to stop and repressive osteonecrosis or formation steel plate source property osteoporosis.The periosteum of steel plate fixed position is intercepted, and also can influence fracture blood fortune, is unfavorable for union of fracture.The early stage fraction necrosis that takes place of fracture site makes fracture gap broadening, and stopping of steel plate screw arranged, and bone stump can not close up automatically, and healing time is prolonged.Steel plate belongs to foreign body in vivo in fact to stimulate, and cell reaction, infection, bone does not connect complication can take place, even the generation steel plate that has fracture, causes operative failure.The steel plate internal fixation finally still needs second operation to cut taking-up, and patient stands once painful once more.

Deficiency on the above-mentioned steel plate internal fixation device, the ad hoc outer steel plate holder of the automatic press body of a kind of fracture of having counted.It is the principle of being association of activity and inertia according to China's traditional Chinese medical science plintlet treatment fracture, makes in conjunction with modern biomechanical principle research.The outer steel plate fixer structure of the automatic press body of designed fracture is simple, easy to manufacture, easy for installation.Most critical be steel plate in external fixedly fracture, the screw percutaneous is fixed on the skeleton, the outer part of skin adds fixed by nut with steel plate.After the reduction of the fracture is fixing, under the elasticity of screw, utilizes muscular strength from body, muscular tension, on fracture face, produce pressurization automatically and produce stress stimulation, fracture non-stress shielding, promotion union of fracture from the conduction of gravity.Not only steel plate screw can be in external dismounting after the union of fracture, and has avoided the hardship of patient's second operation.

This utility model adopts following measure to realize in order to achieve the above object: the outer steel plate holder of the automatic press body of fracturing is made up of screw, nut, steel plate, three usefulness spanners.It is characterized in that screw one end is a unskilled labor system screw thread, is furnished with nut, clamped steel plate between its two nut, the top, the side of being, top of its nail, the other end is the orthopaedics retaining thread, and the centre of screw is cylindrical, because the screw material therefor is that titanium is made, it has good consistency and elasticity, and pressurization automatically helps fracturing.

This utility model can be realized by following measure: steel plate is rectangular pancake, be shaped on elliptical aperture on the plate, plate hole is used to adjust the fixed position of screw, by distance between the screw of adjusting the fracture two ends, borrow the elastic force of screw that fracture two broken ends of fractured bone correspondences are closed up, realize the purpose of pressurization automatically.

This utility model can also be realized by following measure: three usefulness spanners are " fourth " shape, the wrench body lower end is 4 jiaos of square holes, be used to be screwed into or removable screw, the handle left end is single port 2 dihedrals, nut under the steel plate is tightened in special use, the handle right-hand member is 6 jiaos of holes, and the interior depths in hole is hollow for circle, is used for the loading and unloading of steel plate upper cap nut.

Below in conjunction with drawings and Examples utility model is further specified.

Fig. 1 is an example structure sketch map of the outer steel plate holder of the automatic press body of fracture.

Fig. 2 is this utility model operation technique apparatus three spanner structure sketch map.

Fig. 3 is 10 TV structure sketch maps of Fig. 2.

In Fig. 1, expression screw one end 7 has been fixed on the skeleton 8, and centre is cylindrical 5, and the other end is made screw thread 6 for the worker, and push up between 2, two nuts 3 and accompanies steel plate the side of being, top, and steel plate 4 is rectangular pancake, is shaped on elliptical aperture 1 in the plate.

In Fig. 2, handle left end 9 is 2 jiaos of single port, nut coupling under its degree of lip-rounding and the steel plate, handle right-hand member 10 be 6 jiaos of holes 11 with steel plate on the square nut coupling, the depths is for round hollow 12 in the hole in, wrench body lower end 13 is 4 jiaos of square holes.

Fig. 3 looks sketch map for 10 faces of Fig. 2.

The enforcement of steel plate fixator for fracture at automatic pressor body, it is a big technological improvement for the treatment of fracture inner fixation surgical instrument, this apparatus structure is simple, and is easy to manufacture, installs and fixes conveniently, it not only can keep fracture stabilization, and can make self muscular strength, flesh tension force, make the fracture face Self-pressurizing agri, accelerating union of bone fracture, the generation that reduces and levy from the gravity conduction, the advantage such as avoid again performing the operation is so it can be used widely in fracture fixation.

Claims

1, the outer steel plate holder of the automatic press body of a kind of fracture is made up of screw, steel plate, nut, three usefulness spanners, it is characterized in that: steel plate is clamped with two nuts in the screw upper end in steel plate hole, the screw lower end is fixed on the skeleton, the special-purpose loading and unloading of three usefulness spanners.

2, the outer steel plate holder of the automatic press body of fracture according to claim 1, it is characterized in that: the screw material therefor is made of titanium, and the upper end is shaped on unskilled labor system screw thread lower end and is shaped on the orthopaedics retaining thread, and the centre is cylindrical, the top, the side of being, top of its screw.

3, the outer steel plate holder of the automatic press body of fracture according to claim 1 is characterized in that: be shaped on elliptical aperture on the steel plate of strip.

4, the outer steel plate holder of the automatic press body of fracture according to claim 1, it is characterized in that: there are 4 jiaos of square holes three usefulness spanner lower ends, and the handle left end is 2 jiaos of single port, and the handle right-hand member is 6 jiaos of holes.