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Minimally invasive distal femur medullary canal orientator

A directional device and distal technology, applied in bone drill guidance, medical science, surgery, etc., can solve the problems of difficult positioning, inconvenient adjustment, poor versatility, etc., and achieve the effect of simple structure

Active Publication Date: 2017-09-29
CHANGZHOU ORTHMED MEDICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many instruments for measuring the valgus angle of the distal femur, but these instruments have defects such as difficult positioning, inconvenient adjustment, or poor versatility

Method used

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  • Minimally invasive distal femur medullary canal orientator
  • Minimally invasive distal femur medullary canal orientator
  • Minimally invasive distal femur medullary canal orientator

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Embodiment Construction

[0026] The present invention will be described in detail in conjunction with accompanying drawing now. This figure is a simplified schematic diagram only illustrating the basic structure of the present invention in a schematic manner, so it only shows the components relevant to the present invention.

[0027] Such as Figure 1-5 As shown, a minimally invasive distal femoral canal directional device of the present invention includes a main body 2, a rotating body 3, an orienting pull plug 4, a hollow shaft 1, a hollow end cap 5 and a spring 6, and one end of the rotating body 3 is connected to The main body 2 is rotationally connected, the other end of the rotating body 3 is connected to the directional pull plug 4, and the connecting end of the rotating body 3 and the directional pulling plug 4 is provided with a toothed angle indicating plate 10, the The directional pull plug 4 is provided with a toothed needle 11 that matches the toothed angle indicator plate 10, and one en...

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Abstract

The invention provides a minimally invasive distal femur medullary canal orientator. The minimally invasive distal femur medullary canal orientator comprises a main body, a rotating body, an orientating pull plug, a hollow shaft and a hollow end cap, wherein one end of the rotating body is rotatably connected with the main body; the other end of the rotating body is connected with the orientating pull plug; a tooth-shaped angle indicator panel is arranged at an end, which is connected with the orientating pull plug, of the rotating body; a tooth-shaped needle which is matched with the tooth-shaped angle indicator panel is arranged on the orientating pull plug; one end of the hollow shaft successively penetrates through the main body, the rotating body and the orientating pull plug; the end of the hollow shaft is fixed by the hollow end cap; the other end of the hollow shaft is rotatably connected with the main body; and an end, which is connected with the main body, of the rotating body is rotatably connected with the hollow shaft. On the one hand, the orientator is used for determining a knee physical valgus angle in the knee replacement; and on the other hand, the minimally invasive distal femur medullary canal orientator is used for positioning preartis osteotomy of a femoral condyle and distal femur osteotomy, is simple in structure and convenient to operate, and meanwhile is suitable for a left leg and a right leg.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a minimally invasive femoral distal medullary cavity directional device. Background technique [0002] The knee joint is the largest and most complex joint in the human body. Knee replacement is one of the effective ways to treat knee joint diseases such as degenerative arthritis, rheumatoid arthritis, post-traumatic arthritis, and flexion deformity, and related researches are getting more and more attention. [0003] In the artificial knee surface replacement surgery, it mainly involves the replacement of the femoral component and the tibial component to replace the damaged knee joint. There is an angle difference between the anatomical axis of the human femur and the mechanical axis, and the distal femoral osteotomy is usually performed according to this angle difference to re-establish the line of force. Therefore, in knee arthroplasty, determining the femoral valgus...

Claims

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Application Information

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IPC IPC(8): A61B17/17A61B90/00
CPCA61B17/00234A61B17/1732A61B90/06A61B2090/067
Inventor 周嘉宏郑东桂
Owner CHANGZHOU ORTHMED MEDICAL INSTR
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