An intraosseous bone mover and method of use thereof

Abstract

The invention discloses a Harbin hip device and a use method thereof. The Harbin hip device comprises a guider fixing plate, a half-thread tail-free nail vertically inserted into the middle part of the guider fixing plate, and fixing nails inserted into the two ends of the guider fixing plate, wherein the half-thread tail-free nail is adjustably connected with a guide hole of the guider fixing plate through a guide propelling assembly; the guide propelling assembly comprises an adjusting nut, a tail-free screw guider, a locking block, a spiral spring and a setscrew. The Harbin hip device is mainly applied to Harbin hip operation of femoral head necrosis; a vascular net is built between the middle part and the lower part of a bone core by rich blood supply in a trochanter cancellous bone, and the vascular net extends to the upper part of the bone core to build a vascular net with a femoral head finally so as to rebuild femoral head blood supply; the Harbin hip device can be pushed under compression, and can also be retracted reversely after compression, so that an accordion technology for forming a capillary network between a moved bone block and a host bone can be realized; applied force is elastic continuous stress which conforms to the biomechanical principle better.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an intraosseous bone moving device and a method for using the same. Background technique [0002] The main body of the existing intraosseous bone transfer device for the treatment of femoral head necrosis includes a bracket, push pins and fixation pins. Generally, the push pins and fixation pins use straight thread heads or non-thread cone heads. Due to the limitation of the structure itself, the tensile stress law The realization is not ideal, because the connection between the bracket and the push pin is a rigid connection. When the rotation is adjusted, the manual operation often exerts an instantaneous strong pressure, and there is no self-buffering and fine-tuning between the push pin and the bracket. Function, therefore, the push needle often cannot advance slowly at a uniform speed, and it is even more inconvenient to retreat. During its movement, the performance of force is...

AI Technical Summary

Problems solved by technology

[0002] The main body of the existing intraosseous bone transfer device for the treatment of femoral head necrosis includes a bracket, push pins and fixation pins. Generally, the push pins and fixation pins use straight thread heads or non-thread cone heads. Due to the limitation of the structure itself, the tensile stress law The realization is not ideal, because the connection between the bracket and the push pin is a rigid connection. When the rotation is adjusted, the manual operation often exerts an instantaneous strong pressure, and there is no self-buffering and fine-tuning between the push pin and the bracket. Function, therefore, the push needle often cannot advance slowly at a uniform speed, and it is even more inconvenient to retreat. During its movement, the performance of force is intermittent and instantaneous pressurization, and then maintained in situ. This pressurization method will cause bone blocks to produce hundreds of microns Displacement much larger than the volume of bone cells and mesenchymal cells, and then maintained in situ, which will have an adverse effect on the initial bone repair

In addition, all the fixation pins and push pins in the prior art are arranged in parallel on the same plane, which is prone to loosening of the needle tract in the proximal femur with osteoporosis, and thus induces needle tract infection, and may even be caused by The whole bone transfer device was pulled out and the operation failed

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