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Direction changeable bone sander

A grinder and variable technology, applied in medical science, surgery, etc., to achieve low cost, improved operational flexibility, and strong versatility

Inactive Publication Date: 2015-08-19
史纪元
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Throughout the development and characteristics of femoral head internal stents, implantation through small-diameter bone tunnels has become a hot spot, but at the same time satisfying the small-diameter bone tunnel approach and maximally cleaning the sclerotic zone in the femoral head has become the best choice for stent implantation. technical bottleneck

Method used

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  • Direction changeable bone sander
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  • Direction changeable bone sander

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Experimental program
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Embodiment Construction

[0014] The present invention is described in detail in conjunction with the accompanying drawings. The core component of the variable direction orthopedic grinder of the present invention is a universal joint, such as figure 1 The cross joint shown is one implementation. figure 1 A is the side of the universal joint away from the power system, B is the cross shaft, C is the side of the universal joint close to the power system, and the end of C is processed with a transmission ratchet that can match the power system. figure 2 Shown are the front and side views of the variable direction outer sheath, which is composed of the variable direction sheath D, the fixed sheath E, and the base F; G is the direction change control component. D and E are hinged by pin H and can be angled in a single plane. The variable outward sheath is an eccentric open design, the main working channel I runs through D and E, and is located on the opposite side of the hinge, which accommodates the gr...

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PUM

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Abstract

The invention provides a surgical instrument used in a marrow core pressure reduction operation for treating osteonecrosis of femoral head and other orthopedic operations, and particularly to a surgical instrument capable of implanting a femoral head supporter and transplanting stem cells. The direction changeable bone sander is composed of a direction changeable sheath pipe assembly, a direction change control assembly and a polishing assembly having a universal joint and a polishing head. The direction changeable bone sander can be connected to an orthopedic endoscope power system handle, the pointing direction, of the direction changeable sheath pipe assembly, in a single plane and the polishing direction of the polishing assembly having the universal joint and the polishing head can be changed through controlling the direction change control assembly, when the polishing assembly rotates at a high speed. The direction changeable bone sander can be applied to fields of orthopedic endoscopes and the like, so an operator can flexibly operate.

Description

1. Technical field [0001] The invention relates to a surgical instrument used in orthopedic operations such as femoral head necrosis pulp core decompression, especially a surgical instrument including implantation of a femoral head supporter or stem cell transplantation. 2. Background technology [0002] Avascular necrosis of the femoral head is a common and frequently-occurring disease in orthopedics. The destruction of the blood supply of the femoral head caused by various reasons can cause the death of the active components of the femoral head. During the repair process of the osteonecrosis area, the early necrotic bone trabeculae are mainly absorbed, which makes the collapsed area more fragile, and micro-fractures occur before complete repair, which in turn causes changes in the mechanical properties of the femoral head, deformation and collapse of the femoral head , thereby seriously affecting joint function. Core decompression surgery is currently recognized as an ef...

Claims

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Application Information

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IPC IPC(8): A61B17/16A61B17/22
CPCA61B17/1662A61B17/00234A61B17/22A61B2017/00238
Inventor 史纪元
Owner 史纪元