An external fixator for correcting deformity of the foot and ankle
An external fixator and deformity technology, applied in the direction of external fixator, fixator, medical science, etc., can solve the problems of inconvenient adjustment and correction operation, difficult operation by doctors, and large tibial injury
Active Publication Date: 2020-11-06
BEIJING UNIV OF TECH
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Problems solved by technology
[0003] At present, when the ankle deformity correctors on the market are fixed, two tibial rings are mostly used on the tibia, which will cause too much damage to the tibia when the needle is fixed. Moreover, external fixation brackets are mostly used in surgical operations now. It brings a certain degree of difficulty to the doctor's operation during installation, and it will also cause inconvenience to the operation during the subsequent adjustment and correction process.
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[0024] Such as Figure 1-Figure 6 As shown, an external fixator for correction of ankle deformities has a U-shaped fixed platform, a U-shaped dynamic platform and three branch chains, and adopts a 5-degree-of-freedom parallel form, mainly including a U-shaped fixed platform (A), a U-shaped dynamic platform ( B), the first right branch (C), the second right branch (D), the back branch (E), the first left branch (F), the second left branch (G), Kirschner wire Clip (H) and Kirschner wire (I). First, the fixation of the tibia is completed. The doctor first uses a tool to insert two Kirschner wires vertically into the tibia. The two Kirschner wires form an angle of 60 degrees. Insert the Kirschner wires into the Kirschner wire fixing screws, and then tighten the fixing nuts first. Fix the Kirschner wire in the Kirschner wire set screw, because a certain tension is required on the Kirschner wire, and then adjust the tension nut to make tension appear on the Kirschner wire. Then co...
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The invention provides an ankle malformation correction outer fixer. The fixer is collectively provided with five degrees of freedom and consists of a U-shaped fixed platform, a U-shaped movable platform, a first right branch chain, a second right branch chain, a rear branch chain, a first left branch chain, a second left branch chain, a kirschner wire clip and a kirschner wire, the pose of the movable platform can be changed by adjusting a telescopic rod movement pair, and the length correction and angle correction of the ankle malformation can be realized. Under the situation of talipes equines and talipes equines malformation complication, the ankle malformation correction can be effectively realized by adjusting the length of each movement pair by changing the telescopic rod, the structure is simple, and the use is convenient.
Description
technical field [0001] The invention belongs to the field of surgical medical instruments, and in particular relates to an external fixator for correcting foot and ankle deformities. Background technique [0002] With the rapid expansion of industrial and mining enterprises and various frequent traffic accidents, the incidence of congenital and acquired ankle deformities is on the rise, which seriously affects the daily life of patients and brings huge physical and mental pressure to patients themselves. There are 41 joints in the foot, accounting for 84% of the joints in the lower extremities. Has complex and subtle motor functions. The various movements and balances of the human body on the earth are all related to the feet. Ankle deformities usually cause serious injuries to bones and ligaments, which usually lead to deformation of bone joints, short feet, stiffness of soft tissues, defects and ulcers, shortening and variation of blood vessels and nerves, and may also b...
Claims
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IPC IPC(8): A61B17/64
CPCA61B17/6425A61B17/645A61B2017/564
Inventor 李剑锋陈莹赵霞胡晓洁
Owner BEIJING UNIV OF TECH