CN2560311Y

CN2560311Y - Bridge-opening broadened bone arc board for internal fixation operation for orthopedics

Info

Publication number: CN2560311Y
Application number: CN 02237642
Authority: CN
Inventors: 张力; 邢更彦; 苏峰; 张海鹏; 孙荣玺; 朱金如; 李树军; 李玮; 苏立伟; 王艳鹏
Original assignee: 张力
Priority date: 2002-06-21
Filing date: 2002-06-21
Publication date: 2003-07-16
Anticipated expiration: 2012-06-21

Abstract

The utility model pertains to the field of medical devices, which is applicable to the orthopedic internal fixation surgery. The inner surface of the utility model is distributed with arch-shaped grooves, the parts on the outer surfaces corresponding to the grooves are provided with convex uplifts, the width of a bone lamella is about one third of the perimeter of the affected bone, and nail holes are two rows. The utility model can not only strengthen the strength and stability of the fixation, but also create conditions for the repair of the periosteum under the bone lamella and callus growth, furthermore, the utility model can also avoid the postoperative fracture (bending) of the bone lamella and the second fracture after the removal of the bone lamella.

Description

The orthopaedics internal fixation operation widened bone arc board of bridge-opening

This utility model belongs to medical instruments field, is used for the orthopaedics internal fixation operation.

The hone lamella (mainly be steel plate) of fracture behind (particularly fracture of shaft of femur) internal fixation operation fracture (or bending) and get steel plate after refracture, clinical much, this both brought unlimited misery to the patient, brought civil disputation for again hospital and apparatus Producer.Although the reason that fractures of postoperative steel plate is complicated, but before the growth of spur broken ends of fractured bone heals into to a certain degree, armor plate strength can not bear suffers from limb functional exercise (being difficult to the grasp appropriateness) process lever principle to the opplied moment that hone lamella forms, and then is main cause wherein.As simple increasing hone lamella width,, further increased the weight of scope and the degree of hone lamella to the growth of spur influence though can improve the intensity of hone lamella drag.In view of above-mentioned contradiction, we have designed the widened bone arc board of bridge-opening.

This utility model is made by rustless steel or titanium alloy material, and (as figure one) its width (arc length) reaches suffers from about 1/3 of bone girth, obviously is wider than the common hone lamella of corresponding specification, to strengthen the intensity of the vertical drag of hone lamella; The surperficial radian of its inner surface substantially surely closes inner surface with the radian of suffering from the bone common site and is interrupted distribution bridge-opening groove (as figure two), groove cross section is the semicircle of 180 degree, groove is based on cannelure, there is the oblique type groove of interruption to communicate between the pod, be beneficial to periosteum between the far and near end of fracture under hone lamella reparation and plate under the growth of callus, outer surface with the groove corresponding position have protruding grand, to guarantee the vertical thickness and the intensity of groove hone lamella.Bone arc board vertical thickness everywhere is roughly even, but oblique groove protruded part thickness is big a little, to increase vertical power resistance strength; The nail hole of this plate is made up of two rows, is beneficial to the increasing reliability of fixation, prevents screw loosening.

This utility model is improving plate strength and fixedly in the reliability, be beneficial to growth of spur (latter is regarded as the advantage of external fixer always), use this utility model internal fixation operation to have the advantage of external fixer concurrently, be beneficial to and prevent that hone lamella from fractureing (or crooked) and get refracture behind the plate, has the prospect of clinical practice widely.

The operation implementation process of its embodiment and common hone lamella roughly the same.

Fig. 1 is this utility model sketch map.

Fig. 2 is for being bridge-opening groove distribution schematic diagram (this figure does not show the nail pore size distribution).

Claims

1, a kind of orthopaedics internal fixation operation widened bone arc board of bridge-opening, it is characterized in that: the inner surface interruption is distributed with the bridge-opening groove, and outer surface has protruding swell relative with groove, and the common hone lamella of the more corresponding specification of its width obviously strengthens, reach and suffer from about 1/3rd of bone girth, the nail hole is double.

2, the described orthopaedics internal fixation operation of the claim 1 widened bone arc board of bridge-opening, it is characterized in that: the cross section of described groove is the semicircle of 180 degree, groove is based on the longitudinal type groove, have oblique groove to communicate between the pod, the thickness between oblique slot and oblique protruding the swelling is thickeied than the bone arc board other parts.