Bone taking and grafting beating device for femoral marrow opening

Abstract

The invention relates to a bone taking and grafting beating device for a femoral marrow opening, which comprises an outer-layer bone taking sleeve and an inner-layer beating device, the outer-layer bone taking sleeve is a hollow sleeve, and a bone taking trephine is arranged at the head end of the hollow sleeve; the inner-layer beating device is a solid columnar beating device, and the head end of the solid columnar beating device is a planar beating device head; the outer-layer bone taking sleeve is used for taking bones and storing the taken bone blocks in the hollow sleeve; and the diameter of the solid columnar beating device is matched with that of the hollow sleeve, so that the solid columnar beating device can be inserted into the hollow sleeve, and the bone block stored in the hollow sleeve is beaten into a femoral marrow opening in the process of inserting the solid columnar beating device into the hollow sleeve. The bone taking and grafting beating device has the functions of taking bones and grafting bones, can smoothly and quickly complete the operations of taking the bones and grafting the bones, realizes good bony filling for the femoral marrow opening, saves the time for trimming and splicing bone blocks, and is convenient to operate and high in practicability; and the adopted tools are simple and convenient, and are convenient to carry and disinfect.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a bone harvesting and bone grafting device for opening a femoral medullary hole. Background technique [0002] In total knee arthroplasty, in order to determine the osteotomy force line of the distal femur, it is necessary to perform distal femoral pulpotomy, that is, use an electric drill to drill the cortex above the intercondylar fossa of the distal femur, insert a force line rod, and The distal femoral osteotomy was performed by means of internal positioning. For the stability of the force rod, the medullary opening is generally larger, but the opening of the femoral medullary cavity will lead to obvious postoperative blood loss, so the opening of the medullary opening is usually closed after the knee prosthesis is placed to avoid Excess blood in the medullary cavity drains from this hole. [0003] At present, when performing the sealing of the femoral medullary...

AI Technical Summary

Problems solved by technology

[0007] The first method of bone block closure is difficult to grasp the size of the bone block. If the bone block is too small, it will not be enough to seal the medullary hole. If the bone block is too large, it is inconvenient to fill it.

The more important disadvantage is that this method requires extra time to trim and splice the excised bone fragments, prolonging the operation time and wasting the operator's energy

[0008] The second method of bone cement sealing, although it solves the above-mentioned problems of shaping and preparation time, but the bone cement is a foreign body after all, and cannot achieve bony sealing of the medullary opening, which may cause local bone loss, and once the cement block falls into the joint cavity, it must be surgically removed again

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