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A femur extramedullary positioning osteotomy template

An external positioning and osteotomy technology, applied in bone drill guidance, medical science, surgery, etc., can solve the problems of high preoperative preparation cost, complicated surgical operation, shortened operation time, etc., to reduce damage and bleeding, and to achieve simple operation. , the effect of shortening the operation time

Active Publication Date: 2018-05-22
孙朝军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the disadvantages of navigation technology and 3-D printing technology, complicated operation and high preoperative preparation costs, this tool is easy to operate, shortens the operation time, and does not need to increase any preoperative preparation costs

Method used

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  • A femur extramedullary positioning osteotomy template

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Embodiment Construction

[0008] Attached below figure 1 And the specific embodiment will further illustrate the present invention.

[0009] A femur extramedullary positioning osteotomy template, which is composed of a tibial surface guide plate 1 and a distal femoral osteotomy guide plate 2, a connecting rod 3 is arranged between the tibial surface guide plate 1 and the distal femoral osteotomy guide plate 2, and the distal femoral osteotomy guide plate 2 is provided with distal femoral osteotomy guide plate fixation nail 5, and the upper part of tibial surface guide plate 1 is vertically provided with extramedullary positioning rod 4. In artificial knee arthroplasty, when used to determine the knee extension gap, the tibial osteotomy is performed first to ensure that the tibial osteotomy surface is perpendicular to the force line of the lower limbs. When the tension of the inner and outer ligaments of the joint is balanced, the tibial surface guide plate 1 of the present invention is attached to the...

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Abstract

The invention discloses an osteotomy template for femur extramedullary positioning, and belongs to an auxiliary instrument for an artificial knee joint primary replacement operation. The osteotomy template is used for positioning for distal femur osteotomy in the artificial knee joint primary replacement operation, comprises a tibia surface guide plate (1) and a distal femur osteotomy guide plate (2), and is characterized by further comprising a connecting rod (3), an extramedullary positioning rod (4) and a distal femur osteotomy guide plate fastening nail (5); the tibia surface guide plate (1) can be connected with the distal femur osteotomy guide plate (2) through the connecting rod (3). Through application of the osteotomy template to the artificial knee joint replacement operation, the following advantages can be realized: opening of a femur medullary cavity is not needed, injury and bleeding are reduced, a minimally invasive effect is realized, the pain of a patient is relieved, the knee extension and flexion gaps can be directly determined, osteotomy for several times is not needed, and osteotomy is reduced to the most extent; the osteotomy template is a tool being simple to operate; through adoption of the osteotomy template, the operation duration is shortened, and no any additional cost for preoperative preparation is needed.

Description

technical field [0001] The invention provides a femur extramedullary positioning osteotomy template, which belongs to an auxiliary instrument for primary artificial knee replacement surgery and is used for positioning distal femur osteotomy in primary artificial knee replacement. Background technique [0002] The traditional distal femoral osteotomy template used in artificial knee arthroplasty determines the valgus angle of the distal femoral osteotomy surface through intramedullary positioning of the femur during surgery, and the subsequent surgical steps can only be completed after correct osteotomy. In artificial knee arthroplasty, the main requirements for distal femoral osteotomy are as follows: 1. When the knee joint is in straight position, the osteotomy surface of the distal femur is parallel to the osteotomy surface of the upper segment of the tibia and valgus at a fixed angle with the axis of the femur ( 5°-7°); 2. The osteotomy surface of the distal femur is perp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/17
CPCA61B17/00234A61B17/171A61B17/1732A61B17/1767A61B2017/564
Inventor 孙朝军李红孙哲胡志富赵昌赵剑波李月尹坤何宁李超孙力
Owner 孙朝军
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