CN2303591Y

CN2303591Y - Column-bridge type contact-power-limited pressure bone-setting board

Info

Publication number: CN2303591Y
Application number: CN 97226531
Authority: CN
Inventors: 高吉昌; 包双清
Original assignee: No211 Hospital Cpla
Current assignee: No211 Hospital Cpla
Priority date: 1997-09-19
Filing date: 1997-09-19
Publication date: 1999-01-13
Anticipated expiration: 2007-09-19

Abstract

The utility model relates to a column-bridge type contact-power-limited pressure bone-setting board which is composed of a board and mammose protrusions arranged at the surface of the board. The utility model is characterized in that the middle of a board body is wide and thick, and both end parts are acute and thin. Except the middle part, symmetrically arranged threaded holes are arranged on both ends of the board body, and a pair of dynamic force threaded holes which are axially moved are arranged near the fracture end. Mammose protrusions are arranged on both sides of the surface of the board body, and are symmetrically distributed at the middle of two screw holes and the dynamic force threaded holes which are axially moved or are separately provided with a triangle. The near fracture end of the mammose protrusions is in a vertical plane, a far fracture end is in a slope of 45 DEG, and a top end is a plane. The bone-setting board and the periosteum and the cortical bone are divided into intervals, the oppression can be prevented, and the blood circulation of the bone can be protected.

Description

Column bridge restriction contact Dynamic Compression Plate

This utility model is to belong to the Orthopeadic Surgery medical apparatus and instruments.

At present, the blade plate of the usefulness of generally fracturing is a straight structure, pastes after bone is simultaneously fixed bone to be produced directly compressing, causes two inevitable shortcomings: the direct compressing of promptly delaying, influence the blood circulation of bone, and cause osteonecrosis to reach June; And the stress of later stage blade plate protection and stress concentration cause the cortical bone pine to become, and remove the back a very long time still existing even this pine becomes the knitting blade plate, and this loose change can cause refracture.

The purpose of this utility model is to propose a kind of column bridge restriction contact Dynamic Compression Plate; the papillary projection is set up at two stringer edges at plate body and bone contact plane; the a plurality of straight lines that are distributed in every limit; this projection becomes the space with between its bone and the blade plate; make that cortical bone does not cause compressing under the steel plate; unlikely osteonecrosis reduces protection stress stress concentration simultaneously and causes later stage bone pine change.

This utility model mainly is made of plate body 1, as shown in Figure 1, 2, it is characterized in that: a, plate body 1 middle part are generous, both ends point and approach, and except that pars intermedia, the two ends plate body is provided with the screw 3 of symmetric arrays, and there is a pair of power screw 2 that moves axially at close fracture end place; B, on the lip-deep both sides of plate body 1, be provided with papillary projection 4, can be symmetrically distributed in two screws 3 on the plate body 1, move axially in the middle of the power screw 2, papillary projection 4 nearly fracture ends are vertical, and fracture end far away is 45 degree inclined-planes, and its top is a plane.The emulsus projection 4 of arranged on both sides also can be at screw 3 on the said plate body 1, to move axially in the middle of the power screw 2 be angular distribution at interval.

Operation principle of the present utility model:

Column bridge restriction contact Dynamic Compression Plate; because a plurality of papillary projectioies of a row respectively are set in the surperficial both sides of the plate body 1 that pastes a blade plate of bone; this two rows projection will be stayed a space between bone and the blade plate; the direct compressing of 1 pair of cortical bone of plate body of blade plate has been avoided in this space; especially to the fracture fixation of deep film not; adopt its periosteum of this blade plate and cortical bone not to cause compressing, the circulation of 1 time periosteum of plate body can freely be passed through, and has protected the blood circulation of bone.For the distribution of papillary projection, its projection uniform distribution two rows between two screws being the screw 3 that is symmetrically distributed in plate body 1 surface, moving axially power screw 2 that distribute; Also can be in two papillary projectioies of two screw midfeather angular distribution.As Fig. 3.The end face of papillary projection 4 is a plane simultaneously, and nearly fracture end is vertical section, and fracture end far away is 45 degree ramp structures as shown in Figure 1, and bone moved axially to fracture end when this structure helped the power pressurization, was convenient to synthetism.But the screw both sides on the plate body 1 wherein are symmetrically distributed, and as 8 holes, 6 holes, 4 holes, can be 5 kinds of models: promptly: speciality 8 holes, long 6 holes, short 6 holes, long 4 holes, specifications such as short 4 holes.

This utility model compared with prior art; because longitudinally lateral symmetry or papillary projection spaced apart on plate body 1 surface of this blade plate; the plate body 1 of blade plate can be separated into the gap with periosteum and cortical bone, periosteum, cortical bone are not suffered oppression, protect the blood circulation of bone.Axially power pressurization screw 2, the nearly fracture end of papillary projection are vertical section, and fracture end far away is 45 degree ramp structures, and bone moves to the fracture end direction when helping the power pressurization.This blade plate mainly is applicable to fracture of tibia, particularly comminuted fracture or open fracture, easy operating herein, lateral incision and tractive tibialis anterior group outside shank (anterior border of tibia), direct-view is manual reduction down, also can use for reference if any the X line, lay this blade plate, not deep film in lateral of tibia, with the bone wushu device of dehiscing, fixed tibial and plate body 1, screw is fixed, and helps the bone lattice and recovers as early as possible.

Description of drawings:

Fig. 1 is that master of the present utility model looks cutaway view;

Fig. 2 is a vertical view of the present utility model;

Fig. 3 is this utility model papillary bulge clearance angular distribution sketch map.

Embodiment of the present utility model:

This utility model is made of plate body 1, on its plate body 1 screw 3 is arranged, moves axially power screw 2 and papillary projection 4, as shown in Figure 1, 2; Plate body 1 middle part is generous, both ends point and approach, wherein papillary projection 4 is to be distributed in both sides, plate body surface, its distribution can symmetry or at interval angular distribution locate at two screws 3, in the middle of moving axially power screw 2; Its plate body 1 is to form with corrosion resistant plate extruding punching press boring, and the papillary projection nearly fracture end that hoists is vertical, and fracture end far away is 45 degree inclined-planes, and the top is that a facet is arranged.

Claims

1, a kind of column bridge restriction contact Dynamic Compression Plate comprises plate body, it is characterized in that: generous in the middle part of a, the plate body (1), both ends point and approaching, except that pars intermedia, the two ends plate body is provided with the screw (3) of symmetric arrays, near the fracture end place a pair of power screw (2) that moves axially is arranged;

B, on the lip-deep both sides of plate body (1), be provided with papillary projection (4), be symmetrically distributed in two screws (3) on the plate body (1), move axially in the middle of the power screw (2), the nearly fracture end of papillary projection (4) is vertical, and fracture end far away is 45 degree inclined-planes, and its top is a plane.

2, column bridge restriction contact Dynamic Compression Plate according to claim 1, it is characterized in that: said plate body (1) is gone up the emulsus projection (4) of arranged on both sides and is arranged, also can be at screw (3), to move axially in the middle of the power screw (2) be angular distribution at interval.