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Personalized osteotomy positioning guide device for distal femur and tibial plateau and usage method

A positioning guide, tibial platform technology, applied in bone drill guidance, application, medical science and other directions, can solve problems such as increasing medical costs, and achieve the effects of avoiding increased bleeding, convenient preparation, and easy use.

Inactive Publication Date: 2017-05-31
THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to most current clinical research reports, 3D printing personalized osteotomy guide plate positioning technology has no significant advantage in osteotomy accuracy compared with traditional osteotomy positioning technology, but it greatly increases medical costs

Method used

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  • Personalized osteotomy positioning guide device for distal femur and tibial plateau and usage method
  • Personalized osteotomy positioning guide device for distal femur and tibial plateau and usage method
  • Personalized osteotomy positioning guide device for distal femur and tibial plateau and usage method

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Experimental program
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Effect test

Embodiment 1

[0046] Such as figure 1 and figure 2 As shown, the distal femur and tibial plateau personalized osteotomy positioning guide device of the present invention comprises an anterior femoral cortex positioning guide 1 and an osteotomy thickness measuring device 2; The osteotomy direction on the plane, the osteotomy thickness measuring device 2 is used to determine the osteotomy direction and thickness on the coronal plane of the distal end of the femur or the tibial plateau.

[0047]preferred, such as figure 2 As shown, the anterior femoral cortex positioning guide 1 includes a first positioning plate 11 and an L-shaped bar 12, the first positioning plate 11 is provided with a fixing groove 13, and the L-shaped bar 12 includes a positioning bar 14 and a locating bar at one end thereof. The fixing rod 15 passes through the fixing slot 13 . The size of the fixed rod 15 matches the fixed groove 13, the fixed rod 15 can slide back and forth, left and right in the fixed groove 13 u...

Embodiment 2

[0054] The method for determining the osteotomy direction and thickness using the personalized osteotomy positioning guide device of the distal end of the femur and the tibial plateau comprises the following steps:

[0055] S1. Determine the maximum thickness of the medial condyle and lateral condyle osteotomy: preoperatively use CT or MRI scan data of the full length of the femur and tibia, combined with 3D modeling and image analysis software, simulate the knee joint osteotomy operation according to the osteotomy requirements, through The three-dimensional anatomical shape of the osteotomy block was measured to obtain the maximum thickness of the femoral and tibial medial and lateral condyle osteotomies.

[0056] S2. Determine the osteotomy direction of the distal femur on the sagittal plane: Figure 6 As shown, the knee joint surface was fully exposed during the operation, and the first positioning plate was fitted to the anterior cortical surface of the distal femur. Accor...

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Abstract

The invention relates to a distal femur and tibial plateau individual osteotomy positioning guiding device and a use method. The device comprises a thighbone anterior cortex positioning guider and an osteotomy thickness measurer. The thighbone anterior cortex positioning guider comprises a first positioning plate and an L-shaped rod, a fixing groove is formed in the first positioning plate, the L-shaped rod comprises a positioning rod and a fixing rod, and the fixing rod penetrates through the fixing groove. The osteotomy thickness measurer comprises a second positioning plate, a cylindrical dividing ruler and an indicating rod, a positioning bayonet is formed in the second positioning plate, the cylindrical dividing ruler is detachably installed on the second positioning plate, an open hole is formed in the cylindrical dividing ruler, and the indicating rod penetrates through the open hole. According to the distal femur and tibial plateau individual osteotomy positioning guiding device and the use method, due to the fact that the maximum thickness of the osteotomies of the medial condyle and the lateral condylel of the thighbone side and the tibia side is adjusted, and therefore the osteotomy direction of the distal femur and the tibial plateau is directly determined. The distal femur and tibial plateau individual osteotomy positioning guiding device is simple in structure, convenient to manufacture, easy to use, high in individuation precision and clinic adaptability, suitable for a basic-level medical and health organization mechanism and high in performance cost ratio.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a personalized osteotomy positioning guide device for distal femur and tibial plateau for artificial knee replacement and a method of use. Background technique [0002] One of the primary goals of artificial knee replacement surgery is to restore the mechanical line of force of the lower extremity, so that the center of rotation of the hip joint, the midpoint of the knee joint, and the midpoint of the ankle joint lie on an imaginary line of force of the lower extremity on the coronal plane. Correct osteotomy is the basis for good lower limb alignment after operation. [0003] At present, the most commonly used osteotomy positioning methods in artificial knee arthroplasty are femoral intramedullary positioning technology and tibial extramedullary positioning technology. Ensuring that the femoral intramedullary rod accurately indicates the direction of the anatomical axis of the dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/16A61B17/17A61B5/107
CPCA61B17/17A61B17/1739
Inventor 邬培慧傅明廖威明
Owner THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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