Apparatus for taking out caput femoris

Abstract

The invention discloses an apparatus for taking out the caput femoris. The apparatus comprises a movable plate, a threaded rod, a sleeve and a supporting rod, the threaded rod is arranged on the lowerportion of the movable plate, and the sleeve is arranged on the lower portion of the threaded rod; a through hole is further formed in the middle of the sleeve, an inner thread is arranged in the through hole, and an outer thread is arranged in the surface of the threaded rod; the threaded rod is connected with the thread of the through hole through the outer thread, a connecting rod is arrangedon the outer potion of the sleeve and fixedly connected with the sleeve through a bolt, and a movable shaft is arranged on the lower portion of the connecting rod; a supporting rod is arranged on thelower portion of the movable shaft and rotatably connected with the connecting rod through the movable shaft, and a pointed end is arranged on the lower portion of the supporting rod; according to theapparatus for taking out the caput femoris, the movable plate is rotated to screw a conehead of the bottom of the threaded rod into the bone through the outer thread, three supporting rods are arranged on the outer portion of the sleeve, after three-point fixing, the caput femoris can be prevented from rotating through pressing and screwing, and the conehead can conveniently enter into the caputfemoris to take out the caput femoris.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a femoral head extraction instrument. Background technique [0002] Hip replacement is a reliable and repeatable operation to relieve joint pain, restore joint function, and correct joint deformity. It is especially suitable for elderly patients with femoral neck fractures. The current treatment methods for femoral neck fractures include the following: conservative treatment, Closed or open reduction and internal fixation, hip replacement, each treatment has advantages and disadvantages. Conservative treatment is only suitable for some patients with serious medical complications who cannot be operated. Most patients with conservative treatment died of hypostatic pneumonia, decubitus ulcer, urinary tract infection and thrombosis caused by long-term bed rest. For non-displaced femoral neck For fractures, the secondary displacement rate after conservative treatment is a...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a femoral head extraction device, which solves the problem that the tools currently used are all a T-shaped handle, and the front end is a conical screw, which is screwed into the femoral head and taken out, and the femoral head extractor is screwed into the femoral head During the process, the femoral head rotates and it is difficult to enter. An assistant is needed to fix the femoral head

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