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Anus pre-dilator

A pre-expansion and anus technology, applied in the field of medical devices, can solve the problems of patient injury and damage to the patient's anal sphincter, and achieve the effect of relieving pain and avoiding anal fissures

Active Publication Date: 2011-04-27
TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the doctor pre-expands the anus with his fingers, he often damages the patient's anal sphincter due to excessive force in an instant, causing anal fissure and causing the patient to suffer undue injury.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0025] Such as Figure 1-2 As shown, the spiral anal predilator in this embodiment includes a bracket 1 with a cross-shaped structure, a push rod 2 that penetrates through the bracket 1 and can move along the axis of the bracket 1; four symmetrically hinged on the bracket 1 The proximal end of the first transmission rod 41 is pivotally arranged on the bracket 1 through the first pin 41 . In this embodiment, the first transmission rod 4 is an L-shaped structure. The distal end of the first transmission rod 41 is fixedly provided with a muscle expansion sheet 5, the active end of the muscle expansion sheet 5 is away from the first transmission rod 4, and the axis of the muscle expansion sheet 5 is parallel to the axis of the push rod 2, so that the expansion muscle sheet 5 is parallel to the axis of the push rod 2. Muscle sheet 5 can better perform radial outward expansion movement.

[0026] In this embodiment, the linkage mechanism further includes a sliding block 22 arranged...

no. 2 example

[0030] Such as Figure 3-4 As shown, the bracket 1 of the spiral anal pre-expander in this embodiment is a disc-shaped structure, and several first transmission rods 4 are symmetrically hinged on the bracket 1 . Preferably, at least three sets of first transmission rods 4 are symmetrically hinged on the bracket 1 . The rest of the structure in this embodiment is the same as that in the first embodiment, and will not be repeated here.

[0031] Briefly introduce the use process of the present invention below:

[0032] First, adjust the push rod 2 so that the muscle expander piece 5 is in a tightly closed state, and insert it into the patient's anus; then, screw the push rod 2 so that the push rod 2 moves to the far end (i.e. in the patient's body), At this time, the second transmission rod 3 is subjected to the force of outward expansion, which drives the first transmission rod 4 to also expand outward, thereby driving the anal expansion piece 5 to expand outward, and slowly s...

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Abstract

The invention discloses an anus pre-dilator for pre-expanding the anus and an anal canal. The anus pre-dilator comprises a stent, a musculus expanding sheet, a push rod and a connecting rod mechanism, wherein the push rod penetrates the stent and can axially move along the stent; the musculus expanding sheet is connected with the stent through the connecting rod mechanism and can radially move at a far end of the stent; and the connecting rod mechanism makes the axial movement of the push rod along the stent form the radial movement of the musculus expanding sheet at the far end of the stent. The invention has the main advantages that: the anus and the anal canal of a patient can be gradually and controllably expanded, the anal sphincter can adapt to an amplitude capable of being expanded by an anus dilator holder before the anus dilator holder is inserted; therefore, the phenomenon of anal fissure can be avoided, and the pain of the patient is relieved.

Description

technical field [0001] The invention relates to an anus pre-expander used in surgery, and belongs to the technical field of medical instruments. Background technique [0002] When performing inspection, diagnosis or surgical treatment in anorectal surgery, it is necessary to stretch the anus first, and then put in other surgical instruments for inspection or treatment. The commonly used surgical instrument for stretching the anus at present is an anal expander seat, which includes a cylindrical body and a force-applying shoulder located at the tail of the body. The hollow portion forms a passage for other surgical instruments to enter the patient's body. When in use, slowly insert the body of the anal expander seat into the anus until the anal canal. Since the diameter of the cylindrical body of the anal expander seat is usually relatively large (generally more than 30 millimeters), the anal expander seat It is not easy to enter the anus. The existing common way is that t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M29/00
Inventor 陈望东王献峰
Owner TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO LTD
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