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Novel constant-force clamping artificial anal sphincter device

An artificial anus and sphincter technology, applied in the field of medical devices, can solve problems such as mechanical mismatch with intestinal tissue, reduce the probability of intestinal tissue necrosis and infection, solve device failure, and improve force transmission performance

Pending Publication Date: 2022-02-01
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is: how to solve the problem of mechanical mismatch between the existing artificial anal sphincter device and the intestinal tract

Method used

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  • Novel constant-force clamping artificial anal sphincter device
  • Novel constant-force clamping artificial anal sphincter device
  • Novel constant-force clamping artificial anal sphincter device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The artificial anal sphincter device of the novel constant force clamping of the present embodiment is as Figure 1-2 As shown, it includes knob 1, screw 2, connecting rod 1 3, connecting rod 2 4, connecting rod 3 5, connecting rod 4 6, connecting rod 5 7, connecting rod 6 8, connecting rod 7 9, device shell 10, outer Clamping plate one 11, outer clamping plate two 12, 8 superelastic shape memory alloy C-shaped sheets 13, plate clamping element one 14, plate clamping element two 15, clamped by plate clamping element one 14 and the plate Element two 15 clamps the intestinal tract. The above components are all covered by medical silicone rubber film, wherein the plate clamping element 1 14 and the plate clamping element 2 15 are individually wrapped by the medical silicone rubber film with four supporting columns, which are characterized in that:

[0031] The knob 1 and the screw 2 are assembled to form a rotating pair, and the screw 2 is in clearance fit with the throug...

Embodiment 2

[0039] Figure 1 to Figure 3A novel constant-force clamping artificial anal sphincter device shown includes knob 1, screw rod 2, connecting rod one 3, connecting rod two 4, connecting rod three 5, connecting rod four 6, connecting rod five 7, connecting rod Six 8, connecting rod seven 9, device shell 10, outer clamping plate one 11, outer clamping plate two 12, 8 superelastic shape memory alloy C-shaped pieces 13, flat clamping element one 14, flat clamping element two 15. Wherein the plate clamping element one 14 and the plate clamping element two 15 clamp the intestinal tract. The first outer clamping plate 11, the second outer clamping plate 12, the first flat clamping element 14, the second flat clamping element 15, the device shell 10 and the knob 1 are all covered by medical silicone rubber film, wherein the first flat clamping element 14 1. The plate clamping element 2 15 is individually wrapped by a medical silicone rubber film with four support columns. It is chara...

Embodiment 3

[0041] This embodiment is the state when the intestinal tube is clamped, and the device is in the closed state. Figure 4 The internal structure of the device in the closed state, Figure 5 It is the external structure of the device when it is in the closed state. At this time, the outer clamping plate 1 and the outer clamping plate 2 form an elliptical structure to accommodate the intestinal tube, and the flat plate clamping element clamps the intestinal tube.

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Abstract

The invention discloses a novel constant-force clamping artificial anal sphincter device, and relates to the technical field of medical apparatus and instruments. The novel constant-force clamping artificial anal sphincter device comprises a revolute pair, a connecting rod mechanism, a device shell and an outer clamping plate, wherein the connecting rod mechanism is arranged in the device shell, the revolute pair drives the connecting rod mechanism, and the tail end of the connecting rod mechanism is connected with the outer clamping plate. The system complexity of a distal center movement mechanism is greatly reduced, expansion can be carried out on the basis, the rotational degree of freedom of the whole mechanism around the distal center is generated, and the requirement for the degree of freedom needed by minimally invasive surgery is met.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a novel constant force clamping artificial anal sphincter device. Background technique [0002] Fecal incontinence is anal incontinence, which refers to the involuntary flow of feces and gas out of the anus, which is a symptom of defecation dysfunction. Although fecal incontinence does not directly threaten life, it will cause physical and mental pain to patients, and seriously interfere with normal life and work of patients. Although the prevalence of anal incontinence varies from country to country, it is generally on the rise, which is related to population aging. According to statistical literature estimates in 2012, the incidence of colorectal cancer in my country reached 172,000, and therefore, the prevalence of anal incontinence has also increased. [0003] For fecal incontinence, conservative surgical treatment includes (1) anal sphincter repair, which refers to...

Claims

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Application Information

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IPC IPC(8): A61F2/00
CPCA61F2/0036
Inventor 王明辉朱炫睿陈思源农庆钧刘云龙喻洪流周巍卢炳焕韩太宇
Owner UNIV OF SHANGHAI FOR SCI & TECH
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