CN2147840Y

CN2147840Y - Angle screw two-way reversal nut orthopedic device for orthopedics department

Info

Publication number: CN2147840Y
Application number: CN 93213258
Authority: CN
Inventors: 邹德威
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-24
Filing date: 1993-05-24
Publication date: 1993-12-01
Anticipated expiration: 2003-05-24

Abstract

The utility model relates to an angle screw two-way reversal nut orthopedic device for orthopedics department, which comprises an angle screw, a two-way reversal nut, a slotted screw bolt and a push-pull screw, wherein, the flat head of the angle screw has a 'U'-shaped gap and bends a certain angle; the two-way reversal nut is a hexahedron, three surfaces of the two-way reversal nut are respectively provided with a round hole communicated with each other; one end of the slotted screw bolt is put into the 'U'-shaped gap of the flat head, the end of the slotted screw bolt and the slotted screw bolt form an included angle greater than 90 deg., and the other end of the slotted screw bolt stretches into one round hole of the two-way reversal nut; the upper end of the hexagon head of the push-pull screw extends a screw tail which communicates with the other two holes of the screw nut and fixes after connection, so that the screw can freely rotate 360 deg. around the axis of the screw bolt. Hence, the utility model has the advantages that the orthopedic device for orthopedics department has three-D multiple correcting ability, can meet the reduction and correction of a plurality of types of complicated malformations in orthopedics department, and has a strong ability of inner fixation.

Description

Angle screw two-way reversal nut orthopedic device for orthopedics department

Angle screw bilateral break-in nut Osteological device is a kind of Osteological device in the medical instruments field, be used for the particularly treatment of spinal trauma or malformation correction of orthopaedic disease, it is odd-shaped orthopedic to satisfy the multiple complex lesions of orthopaedics, and internal fixation that can be strong.

The medical apparatus and instruments that orthopaedics connects, repairs, the most representative in the world today is U.S. Steffee fluting steel plate and screw system, because the rectilinearity of the groove defined on the steel plate, so can only go up in one aspect preceding quadrate bone piece is executed push-pull effort, and be difficult to adapt to the angle of the physiological bending of spinal column skeleton, therefore, caused the implanted prosthetics complexity, as: need give curved steel plate and hyperpexia with the irrelevant sections of pathological changes.

Other part of machineries such as screw is applied to the orthopaedic trauma treatment, to connect, to repair knochenbruch, and can make it fixing, but the human skeletal be than the common mechanical complex structure many biological structures, especially spinal column is except that the shape and structure complexity, the bending that also has different directions, therefore, simple screw, bolt, nut etc. are difficult to satisfy connection, the reparation and fixing of labyrinth in the three dimensions.

The purpose of this utility model provides a kind of Osteological device of being made up of through fluting bolt, bilateral break-in nut connection push-pull effort screw the angle screw, it can satisfy multiple orthopedic forces such as one-tenth angle, rotation and push-and-pull in the three dimensions, narrates it below in conjunction with accompanying drawing and with embodiment:

Fig. 1: Osteological device exploded view of the present utility model;

Fig. 2: the angle screw side view in this utility model;

Fig. 3: this utility model overall diagram in an embodiment.

See Fig. 1, Fig. 2, Fig. 3, by degree angle screw 1, bilateral break-in nut 2, fluting bolt 3 and push-pull effort screw 4 are formed angle screw bilateral break-in nut Osteological device, the end portion 1-1 of angle screw 1 is flat pattern, at flat horizontal surface U type opening is arranged, respectively open a circular hole on the two sides of U type and have female thread to do fastening usefulness, the flat horizontal surface bending of flat head 1-1 forms an angle Q with threaded portion 1-2 axis, this angle is 5 °, 10 °, 15 °, during use, fluting bolt 3 is put into the U type opening of flat 1-1 of angle screw, angle screw 1 is after bolt 3 is connected with fluting, fastening with trip bolt and nut respectively, the angle of the two will be respectively 95 ° greater than 90 °, 100 °, 105 °.Bilateral break-in nut 2 is a hexahedron, and top end face is arcuation, respectively opens a circular hole 2-1 in the plane of symmetry and adjacent two faces of arcuation face, and totally three circular holes connect mutually, and female thread is all arranged in the circular hole.Looking along the arcuation face plane of symmetry circular hole center of circle is the circular hole axle center Y-axis (not expression on the figure) of X-axis, adjacent two face intercommunications, then X-axis and Y-axis combine in a nut 2 simultaneously and connect mutually, when the bilateral break-in nut of X-axis with after fluting bolt 3 is connected, the push-pull effort screw 4 that passes Y-axis can X-axis be that 360 ° of circumference rotations are done in the center of circle promptly.Fluting bolt 3 symmetrical two sides have two parallel groove 3-1, and this groove is convenient to fastening.Push-pull effort screw 4 is hex head screws of a special shape, extend a threaded tail in the turret head end, this screw thread tail is passed behind the through hole of bilateral break-in nut 2 fixing, then the push-pull effort screw is a fulcrum with bilateral break-in nut 2 promptly, the bone piece (needing corrigent diseased region) that push-pull effort screw the place ahead is screwed in produces push-pull effort, makes bone reduction.After orthopedic the finishing, will tightly clamp the parts that each is connected with trip bolt and nut.

Osteological device of the present utility model has possessed the multiple corrective force of three dimensions and has reached adjustability easily; It only fixedly is the unique distinction of the strong fastness in minimum internal fixation sections in the whole world and locking back with two sections.

Claims

1, a kind of angle screw bilateral break-in nut Osteological device is made up of angle screw 1, bilateral break-in nut 2, fluting bolt 3, push-pull effort screw 4, it is characterized in that: the flat head part 1-1 bending of angle screw 1 forms the θ angle with threaded portion 1-2; Bilateral break-in nut 2 is hexahedrons, and termination one side is curved, respectively opens a circular hole 2-1 in other on three.

2, Osteological device according to claim 1 is characterized in that: the termination 1-1 of angle screw 1 is a flat, and in flat horizontal surface U type opening is arranged, and a circular hole is respectively opened in U type both sides female thread.

3, Osteological device according to claim 1, it is characterized in that: the circular hole of opening on 2 three faces of bilateral break-in nut, a hole are on the plane of symmetry of arcwall face termination, and two holes are on two symmetrical faces in addition, three holes connect mutually, and female thread is all arranged in the circular hole.

4, Osteological device according to claim 1 is characterized in that: symmetrical both sides have parallel slot 3-1 on the fluting bolt 3.

5, Osteological device according to claim 1 is characterized in that: a threaded tail is extended in the turret head upper end of push-pull effort screw 4.