Position limitation protection type ani sphincter prosthesis

Abstract

A position limitation protection type ani sphincter prosthesis comprises an upper fixed ring arranged on an upper ring sleeve in a sleeving mode, a movable middle ring arranged on a middle ring sleeve in a sleeving mode and a lower fixed ring arranged on a motor sleeve in a sleeving mode, wherein the upper fixed ring, the movable middle ring and the lower fixed ring are sequentially connected, the upper ring sleeve is axially connected with the middle ring sleeve, a reduction gearbox connected with a motor is arranged between the middle ring sleeve and the upper ring sleeve, the movable middle ring is connected with a reduction gear train in the reduction gearbox through an inner gear ring arranged on a gear ring sleeve in a sleeving mode, a Hall element is arranged on an upper cover plate of the reduction gearbox, and two magnets matched with the Hall element are arranged at the opposite ends of the gear ring sleeve and the upper cover plate of the reduction gearbox in a spaced mode. It can be effectively avoided that intestines are damaged due to the too large swing amplitude of a swing arm of the middle ring, a mechanical is stuck due to the overturning of the motor, and the motor is burnt down due to the too large current; the opening and closing amplitude of the prosthesis can be adjusted by a mechanism according to the feeling of human intestines; the whole device is simple in structure, small in size, light in weight and beneficial for increasing the transplanting success rate.

Description

technical field [0001] The invention relates to a technology in the field of medical devices, in particular to a position-limiting and protective anal sphincter prosthesis. Background technique [0002] Fecal incontinence is a common clinical disease, which refers to the loss of control of the anal sphincter to the excretion of feces and gas. Because of the loss of anal sphincter function, patients cannot sense the accumulation of feces in the intestine and cannot control bowel movements. [0003] The artificial anal sphincter prosthesis simulates the physiological function of the normal external anal sphincter and can control defecation, thereby treating fecal incontinence. Contents of the invention [0004] Aiming at the problems in the prior art that the material is all metal, and there is no limit protection device, it is easy to cause damage to internal organs, etc., and proposes a limit protection type anal sphincter prosthesis. [0005] The present invention is ac...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art that the material is all metal, and there is no limit protection device, it is easy to cause damage to internal organs, etc., and proposes a limit protection type anal sphincter prosthesis

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