Miniature condyle bone cutting device

A technology of bone cutting and bone cutting, applied in medical science, surgery, etc., can solve the problem of miniaturization of knee joint prosthesis, and achieve the effect of reducing the amount of bone cut, shortening the operation time, and reducing the pain of patients

Active Publication Date: 2012-03-21
BEIJING MONTAGNE MEDICAL DEVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the advent of artificial total knee arthroplasty, the osteotomy of the femoral condyle is still five-sided. Therefore, the design of the inner side of the knee prosthesis has always been five-sided, making it difficult to miniaturize the design of the knee prosthesis.

Method used

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  • Miniature condyle bone cutting device
  • Miniature condyle bone cutting device
  • Miniature condyle bone cutting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0023] Such as image 3Shown, the difference between the structure of the microcondyle bone cutter in embodiment 2 and the structure of the microcondyle bone cutter in embodiment 1 is: on the basis of the structure of the microcondyle bone cutter in embodiment 1, the An anterior condylar osteotomy knife 10 . And correspondingly increased the anterior condyle osteotomy shaft 110 and the anterior condyle osteotomy gear 11 arranged thereon in the gear box 3; The fourth borrowed gear 25 and its gear shaft: the fourth borrowed gear shaft. The anterior condyle osteotomy knife 10 is arranged on the front end where the anterior condyle osteotomy knife shaft 110 protrudes from the gear box 3 . The anterior condyle osteotomy gear 11 meshes with the fourth borrowing gear 25 , and the fourth borrowing gear shaft is supported in the gear box 3 . The fourth borrowing gear 25 also meshes with the second borrowing gear 22b. The rotation of the second borrowing gear 22 b drives the fourth ...

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Abstract

A miniature condyle bone cutting device comprises a driving shaft (2), a gearbox (3), a positioning rod (4), a front condyle bone cutting knife (5), two distal bone cutting knives (6 and 7) and two rear condyle bone cutting knives (8 and 9). The driving shaft (2) is a power input shaft, power is transmitted to the front condyle bone cutting knife (5) via the gearbox (3), the two distal bone cutting knives (6 and 7) and the two rear condyle bone cutting knives (8 and 9) via the gearbox (3), and the positioning rod (4) is located at the front end of the gearbox (3). The miniature condyle bone cutting device breaks through a traditional design concept of knee joint bone cutting, traditional five-surface bone cutting is omitted, surgical instruments for total knee joints and the design of a knee joint prosthesis are more adaptive small-incision minimally invasive replacement technology, vertical bone cutting can be carried out from a distal femur of a human body to a proximal femur of the human body, due to the vertical bone cutting, exposure area can be greatly reduced, a surgical incision is reduced, surgical time is shortened, and sufferings of patients are relieved.

Description

technical field [0001] The invention relates to a knee joint minimally invasive surgical instrument, in particular to a femoral condyle cutting instrument. Background technique [0002] Currently, when a patient needs a knee replacement, or a prosthesis to be installed in the knee joint, the femoral condyle must be reshaped and osteotomized to give it a specific shape to fit the intended prosthesis. In the prior art, it is usually necessary to fully expose the knee joint during the operation, and then cut the five surfaces of the distal end of the femoral condyle, the anterior condyle, the posterior condyle, the anterior oblique, and the posterior oblique respectively. It is cut out five times, so the relative position accuracy of the five surfaces is difficult to match with the size of the matching prosthesis, which affects the quality of the operation and wastes the operation time. To solve this problem, Chinese invention patent: name: femoral condyle forming cutter, pate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/32A61B17/56
Inventor 周袭明
Owner BEIJING MONTAGNE MEDICAL DEVICE
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