CN2358846Y

CN2358846Y - Steel plate for fixation of fracture

Info

Publication number: CN2358846Y
Application number: CN 99227568
Authority: CN
Inventors: 施裕祥
Original assignee: JINFENG MEDICAL ELECTRICAL EQUIPMENT FACTORY ZHANGJIAGANG CITY
Current assignee: JINFENG MEDICAL ELECTRICAL EQUIPMENT FACTORY ZHANGJIAGANG CITY
Priority date: 1999-03-23
Filing date: 1999-03-23
Publication date: 2000-01-19
Anticipated expiration: 2009-03-23

Abstract

The utility model discloses a fracture setting plate used in bone injury departments, which is provided with a pressing hole. One end of the pressing hole is a screw hole with a sinking hole and the other end is only a directly through hole. The screw hole is communicated with the directly through hole to form a long hole. A slope is arranged between the top end of the center line of the upper edge cross section of the directly through hole at the circular arced surface of the fracture setting plate and the generatrix of the cross section of the reverse conical sinking hole of the screw hole. The pressing hole is symmetrical along a long shaft. A fracture setting nail can slide into the sinking hole from the directly through hole along the slope to cause the wound of a fractured bone to be closely jointed. The concave surface of the fracture setting plate and the periphery of each screw hole are also provided with lug bosses, which can cause the fracture setting plate to be closely combined with the fractured bone and prevent the fragmentation of the fracture setting plate caused by uneven stress.

Description

Blade plate

This utility model belongs to medical device, relates in particular to the metal bone fracture plate that is used for orthopedics department.

Orthopedics department in hospital, to the employed blade plate of fracture patient all is by corrosion-resistant, high-intensity metal is made, its structure is the long slab strip, cross section is curved, along being provided with four screw holes that have inversed taper platform shape counterbore on the symmetrical center line of stave lengths direction at least, in two screw holes at middle part, it is the slotted hole that has counterbore that a screw hole is arranged, usually be called the pressurization hole by people, all the other two screws are located at the two ends of lath respectively, between the screw of lath termination and middle part screw, also be provided with at least more than one identical shaped screw, inversed taper platform shape counterbore is located on the arc convex of lath, on stave lengths direction centrage, termination with the relative side in pressurization hole is provided with a groove along the symmetrical center line direction and is common to the extension prelum mutually with the screw hole of this termination.The operating process of this blade plate is: tighten a screw earlier in a screw hole near the blade plate middle part, then, in the slotted hole of pressurization hole, be screwed into second screw away from the blade plate center, make the blade plate location, in the termination screw hole of blade plate pressurization nose end, hang up the prelum that is fixed on the human body, after tightening up prelum bone fracture place being coincide, again the synthetism nail is gone up one by one in screw hole, removed prelum at last.Adopt this blade plate synthetism, make patient's surgical wound surface bigger, increase patient's misery in the operation, postoperative recovery is slow, and because the inner concave of blade plate is slick, the gap can occur between the faying face of blade plate and bone, make the blade plate unbalance stress, stressed when big when blade plate, fracture causes unnecessary misery to the patient easily.

The purpose of this utility model is: provides a kind of and need not use prelum, and the blade plate that with the fastening blade plate of screw the time, just can pressurize to the bone that ruptures automatically, this blade plate can also make its inner concave and patient's injury of the bone tight connecting.

For realizing described purpose, the technical solution of the utility model is: this blade plate is made by corrosion-resistant metal materials, it is arcual lath-shaped that its profile is cross section, be provided with two at the middle part of lath arc convex and have inversed taper platform shape counterbore screw hole, one of them is the pressurization hole, the pressurization hole is the slotted hole shape along the stave lengths direction, along the stave lengths direction, the both sides in two holes are provided with several screw holes that has inversed taper platform shape counterbore at the middle part, these inversed taper platform shape counterbores are located on the convex surface of arc, screw hole is dislocation arrangement up and down along the length direction of blade plate, two screw holes at the screw hole at lath two ends and middle part, comprise the pressurization hole, all place on the symmetrical center line of stave lengths direction, described pressurization Kong Yiduan is the screw hole that has counterbore, the other end only is a clear opening, the screw hole formation slotted hole that communicates with clear opening, be provided with the inclined-plane from the top of lath arc surface clear opening upper edge cross-section center line to the bus of screw hole inversed taper platform shape counterbore cross section, the pressurization hole is along the major axis symmetry.

The further technical scheme of described synthetism is: the screw inversed taper platform counterbore face on the described blade plate all is inner concavity, and the joint portion of counterbore and screw straight hole is that circular arc is excessive.

The further again technical scheme of described synthetism is: on the inner concave arc surface of blade plate, around each screw hole, all be provided with and be with arcual boss, a screw hole at the pressurization hole and the lath middle part that exists together coexists on the boss, for being lower than the cambered surface of boss, this cambered surface is parallel with boss face between each boss.

The utility model has the advantages that: in the synthetism operation, patient's surgical wound surface is less, reduced patient's misery, postoperative recovery is fast, and owing to only around each screw hole of blade plate inner concave, be provided with arc boss, the gap can not occur between the boss of blade plate inner concave and the faying face of bone, make blade plate stressed evenly, be not easy fracture when big yet when blade plate is stressed.

Below in conjunction with accompanying drawing this utility model is described in further detail:

Fig. 1 is a front view of the present utility model;

Fig. 2 is a rearview of the present utility model;

Fig. 3 is the A-A cutaway view of this utility model screw hole;

Fig. 4 is the B-B cutaway view of this utility model cross section;

Fig. 5 is the C-C profile in this utility model pressurization hole;

Fig. 1, Fig. 2, Fig. 3, in, it is arcual lath-shaped that the profile of this blade plate is cross section, is provided with pressurization hole 4 at the middle part of lath arc convex, and pressurization hole 4 one ends are the screw holes 3 that have counterbore, the other end only is a clear opening 5, the screw hole 3 formation slotted hole that communicates with clear opening 5.

In Fig. 1, Fig. 5, to the bus of screw hole inversed taper platform shape counterbore 3 cross-section center lines, be provided with inclined-plane 8 from the top of lath arc surface clear opening 5 upper edge cross-section center lines, pressurization hole 4 is along the major axis symmetry.

In Fig. 1, Fig. 2, along the stave lengths direction, the pressurization hole 4 both sides be provided with the screw hole 2 that several have inversed taper platform shape counterbore, inversed taper platform shape counterbore and the pressurization hole 4 counterbore 3 all be located on the convex surface of arc.

In Fig. 3, all inversed taper platform counterbore faces 10 all are inner concavity, and the joint portion 9 of counterbore and screw straight hole is that circular arc is excessive.In Fig. 1, Fig. 2, screw hole is dislocation arrangement up and down along the length direction of blade plate, and the screw hole 1,6 at lath two ends and pressurization hole 4 place on the symmetrical center line of stave lengths direction.

In Fig. 2, Fig. 4, on the inner concave arc surface of described blade plate, around each screw hole 2, all be provided with and be with arcual boss 7, middle part at lath, pressurization hole 4 should coexist on the boss with a screw hole 11, and for being lower than the cambered surface of boss, this cambered surface is parallel with boss face between each boss.

When on the bone that blade plate is placed fracture, earlier the synthetism nail is tightened in the screw 11, then second synthetism nailed in the clear opening 5 of pressurization hole 4 slotted holes, when progressively tightening synthetism when nail under the effect of pressurization hole deviation face 8, the synthetism nail can progressively slide in the hole 3 along inclined-plane 8, makes the bone of fracture tighten up; The arcual boss 7 of being with that is provided with around each screw hole can combine with irregular bone pointwise, makes that blade plate inner concave and bone are abundant, tight connecting.

Claims

1, a kind of blade plate that is used for medical treatment, be to make by corrosion-resistant metal materials, it is arc that its profile is cross section, be provided with two screw holes that have inversed taper platform shape counterbore at the lath middle part, one of them is the pressurization hole, the pressurization hole is the slotted hole shape along the stave lengths direction, along the stave lengths direction, the both sides in two holes are provided with several screw holes that has inversed taper platform shape counterbore at the middle part, these inversed taper platform shape counterbores are located on the convex surface of arc, screw hole is dislocation arrangement up and down along the length symmetrical center line direction of blade plate, two screw holes at the screw hole at lath two ends and middle part comprise that the pressurization hole places on the symmetrical center line of stave lengths direction, it is characterized in that: pressurization Kong Yiduan is the screw hole that has counterbore, the other end only is a clear opening, the screw hole formation slotted hole that communicates with clear opening, be provided with the inclined-plane from the top of lath arc surface clear opening upper edge cross-section center line to the bus of screw hole inversed taper platform counterbore cross section, the pressurization hole is along the major axis symmetry of slotted hole.

2, according to the described blade plate of claim 1, it is characterized in that: the screw inversed taper platform counterbore face on the blade plate all is inner concavity, and the joint portion of counterbore and screw hole is that circular arc is excessive.

3, blade plate according to claim 1 and 2, it is characterized in that: on the inner concave arc surface of blade plate, around each screw hole, all be provided with and be with arcual boss, a screw hole at the pressurization hole and the lath middle part that exists together coexists on the boss, for being lower than the cambered surface of boss, this cambered surface is parallel with boss face between each boss.