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A permanent magnet adjustable long bone prosthesis and its adjustment device and method

A technology of adjusting device and bone prosthesis, applied in the direction of prosthesis, medical science, etc., can solve problems such as skin ulceration and patient infection, and achieve the effect of reasonable structure, meeting growth requirements, and easy realization.

Inactive Publication Date: 2016-08-31
丁华
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is easy to cause infection and skin ulceration in patients due to external fixation.

Method used

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  • A permanent magnet adjustable long bone prosthesis and its adjustment device and method

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Embodiment Construction

[0016] The structure of the embodiment of the present invention is as figure 1 As shown, the structure mainly includes: prosthesis fixed end 1, inner magnetic steel 2, inner rotor base 3, screw 4, prosthesis moving end 5, support frame 6, bearing 7, outer rotor base 8, outer magnetic steel 9, First gear 10, second gear 11, reduction box 12, motor 13.

[0017] The adjustable long bone prosthesis is composed of a fixed end of the prosthesis 1, an inner magnetic steel 2, an inner rotor base 3, a screw rod 4 and a moving end of the prosthesis 5, and this part of the structure is implanted in the corresponding long bone area of ​​the human body during the operation.

[0018] The adjustment device of the permanent magnet adjustable long bone prosthesis is composed of a support frame 6, a bearing 7, an outer rotor base 8, an outer magnetic steel 9, a first gear 10, a second gear 11, a reduction box 12 and a motor 13. The length of the prosthesis fits over the limb at the correspond...

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Abstract

The invention relates to a permanent magnet adjustable long bone prosthesis and its adjusting device and method. Before adjusting the length of the permanent magnet long bone prosthesis, put the corresponding limbs of the human body into the adjustment device of the permanent magnet adjustable long bone prosthesis, so that the outer magnetic steel of the adjustment device and the inner magnetic steel on the long bone prosthesis implanted in the human body Relatively; start the motor, the output shaft speed of the motor is decelerated by the reduction box and then transmitted to the first gear, the first gear transmits the motion and power to the second gear through meshing transmission, the second gear drives the outer rotor base of the outer magnetic rotor to rotate, and the outer rotor The rotor base drives the outer magnetic steel to rotate to form a rotating magnetic field; due to the repulsion of the same sex and the attraction of the opposite sex between the magnets, a certain phase difference between the outer magnetic steel and the outer magnetic steel will drive the outer magnetic rotor to rotate. The rotation of the magnetic rotor will drive the rotation of the screw, and the rotation of the screw will drive the movement of the moving end of the prosthesis in the fixed end of the prosthesis, thereby realizing the adjustment of the length of the long bone prosthesis.

Description

technical field [0001] The invention relates to an adjustable long bone prosthesis and an adjusting device thereof, which can be used to meet the requirements of some long bone operation patients who need to adjust the length of the long bone at intervals due to growth. Background technique [0002] Some minor patients, such as children, need to remove part of a long bone due to tumors and other reasons. In order to preserve the function of this long bone and improve the quality of life of the patient, a prosthesis is often implanted in the preserved long bone during surgery. Since juvenile patients are not yet fully developed and all parts of the body are still growing, the growth rate of the operated long bones is inconsistent with that of the unoperated long bones. After a period of time, it is necessary to re-operate to change the length of the prosthesis to change the length of the operated long bones. Meet the physiological and psychological needs of patients. However...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/62
Inventor 丁华
Owner 丁华
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