Split type device for healing patellar claw

Abstract

The invention relates to a split-type patella jaw contractor, which comprises a cambered jaw the shape of which corresponds to that of a split-type patella jaw, wherein the cambered jaw is provided with a left cambered jaw and a right cambered jaw which correspond to each other; the left cambered jaw is provided with two jaws; the right cambered jaw is provided with a jaw; a vertical mounting plate is fixed on the upper end of each cambered jaw; a rectangular rod is vertically fixed on the mounting plate of the left cambered jaw; a strip-shaped surface of the rectangular rod is provided with continuous teeth to form a toothed rack; a hole and a sleeve for the rectangular rod to pass through are arranged on the mounting plate of the right cambered jaw; and a spring knob for braking and loosening the rectangular rod is arranged on the sleeve. The spit-type patella jaw contractor has the advantages of small volume, convenient operation, avoidance of bending limitation after healing of the knee joint, avoidance of postoperative inflammation and pain, short surgical time, simultaneously capability of performing pressurization between broken ends well and tightly combining the patella jaw and the patella, and short healing time.

Description

(1) Technical field [0001] The invention relates to an orthopedic internal fixation device, which belongs to the field of medical devices. (2) Background technology [0002] With the increase of traffic accidents and the aging population, there are more and more patellar fractures. After the onset, plaster external fixation generally needs to fix the knee joint for 6 weeks, and during this period the knee joint cannot be exercised for flexion and extension. The fracture healed, and the external fixation was removed, but the knee joint remained flexion-limited to varying degrees; later, it was changed to internal fixation, such as wire ring cerclage, tension band internal fixation, etc. This treatment method has the disadvantages of long operation time and postoperative steel wire fixation. It is related to the occurrence and pain of Kirschner tail bursitis. Now patients are more and more demanding to get exercise as early as possible, and to get a healthy joint and reduce ...

AI Technical Summary

Problems solved by technology

In terms of treatment, the improvement and development of internal fixation devices led to the appearance of split patellar claws, which met the requirements of most patients. Small, and incapable of progressive compression, proved to be a failure

The patellar claw and the patella cannot be tightly combined, resulting in a large fracture gap, resulting in a longer time for fracture healing

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