Mechanical artificial anal sphincter device capable of achieving constant-force clamping

Abstract

The invention relates to a mechanical artificial anal sphincter device capable of realizing constant-force clamping, which comprises an upper fixed top plate, a lower fixed bottom plate, a pair of transmission guide rods, a clamping mechanism, a constant-force mechanism and a transmission mechanism, a pair of transmission guide rods is vertically arranged between the upper fixing top plate and the lower fixing bottom plate at intervals, the clamping mechanism comprises an upper gripper and a lower gripper which are arranged up and down respectively, a channel which is used for containing intestinal canals and is adjustable in size is formed between the upper gripper and the lower gripper, and the constant force mechanism comprises an upper push plate, a lower push plate and paired shape memory alloy plates. The upper push plate and the lower push plate are movably arranged on the transmission guide rod up and down in the length direction of the transmission guide rod, the upper gripper is fixed to the bottom of the lower push plate, and the transmission mechanism is in transmission connection with the upper push plate. Compared with the prior art, constant-force clamping of the intestinal canal tissue by the clamping mechanism is achieved, and the problem of avascular necrosis of the intestinal canal tissue caused by mechanical mismatching of sphincter and the intestinal canal tissue is solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a mechanical artificial anal sphincter device capable of constant force clamping. Background technique [0002] Fecal incontinence is a common chronic disease in the population. Fecal incontinence will not only bring inconvenience to the life of patients, but also cause great psychological harm to patients. Artificial anal sphincter is an innovative therapy that can effectively treat fecal incontinence and has been clinically applied. [0003] For patients with congenital, neurogenic anal incontinence and colorectal cancer with severe anal incontinence, artificial anal sphincter is an ideal treatment method when traditional treatment methods cannot effectively treat the patient's condition. The artificial anal sphincter device can control defecation by simulating the physiological function of the normal external anal sphincter, thereby treating fecal incontinence. Acco...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of the mismatch between the existing artificial anal sphincter device and intestinal tissue mechanics, and the lack of artificial anal sphincter for stoma, and utilize the superelastic properties of the shape memory alloy (Shape Memory Alloy, SMA) material to provide A mechanical artificial anal sphincter device that can be clamped with constant force. The sphincter device is an artificial sphincter for stoma. It provides a possibility and is an important invention to solve the safety and effectiveness problems faced by the clinical application of the artificial sphincter, and the device has the advantages of simple operation, compact structure, and constant force clamping

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