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Permanent magnet type adjustable long bone prosthesis as well as adjusting device and method thereof

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, achieve the effect of reasonable structure, meet growth requirements, and improve the quality of life

Inactive Publication Date: 2015-02-04
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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  • Permanent magnet type adjustable long bone prosthesis as well as adjusting device and method thereof

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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 type adjustable long bone prosthesis as well as an adjusting device and an adjusting method thereof. Before the length of the permanent magnet type long bone prosthesis is adjusted, a corresponding limb of a human body is put into the adjusting device of the permanent magnet type adjustable long bone prosthesis in a sleeving mode, so that outer magnetic steel of the adjusting device is aligned to inner magnetic steel on the long bone prosthesis planted into the human body; a motor is started; the rotating speed of an output shaft of the motor is reduced by a speed reducing box and then is transmitted to a first gear; the first gear is used for transmitting motion and power to a second gear by engaged transmission; the second gear drives an outer rotor base body of an outer magnetic rotor to rotate; the outer rotor base body drives the outer magnetic steel to rotate to form a rotary magnetic field; magnets have the effects of repelling of like poles and attracting of different poles, so that the outer magnetic rotor is driven to rotate after a certain phase difference is formed between the outer magnetic steel and the outer magnetic steel; the rotation of the outer magnetic rotor drives a screw rod to rotate and the rotation of the screw rod drives a prosthesis movable end to move in a prosthesis fixed end, so that the length of the long bone prosthesis is adjusted.

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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IPC IPC(8): A61F2/62
Inventor 丁华
Owner 丁华
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