Dilator for anorectal surgery

Abstract

The invention belongs to the technical field of anorectal dilators, and discloses a dilator for anorectal surgery. The dilator comprises a fixed ring and four movable arc-shaped dilation pieces installed on the fixed ring; wherein a first driving device adopting an annular structure is mounted at the top of the fixed ring and drives the four dilation pieces to reciprocate in the radial direction at the same time; the first driving device is provided with at least six second driving devices in an annular array, and every two adjacent second driving devices do not interfere with each other, andare used to drive the four dilation pieces to independently reciprocate in the radial direction; four arc-shaped sliding grooves that can be locked and limited are formed in the annular array in the fixed ring, and the four dilation piece move independently along the four arc-shaped sliding grooves. The integral dilator can effectively complete the adjustment of adjacent gaps without causing friction with the inner wall of the anus of a patient, the needs of flexible use are met, and the problem of discomfort of the patient is solved.

Description

technical field [0001] The invention belongs to the technical field of anorectal dilator, in particular to an anorectal surgical dilator. Background technique [0002] The anorectal dilator is used for anorectal inspection, operation, or anal dilation during postoperative recovery, so as to prevent anal stenosis and prevent corresponding inspection or operation. [0003] In the existing Chinese invention patents with patent numbers CN1052888830A and CN110354368A, anorectal dilators with movable windows are mentioned, so as to flexibly meet different needs in the operation process. However, in the above two patents, when the adjustment of the active window is performed, the following problems all exist: [0004] The movable window is adjusted by the movement or rotation of the movable slider. In actual use, the slider is located inside the patient's anus. At this time, the surface wall of the slider will contact the inner wall of the patient's anus, and if the slider moves o...

AI Technical Summary

Problems solved by technology

[0004] The movable window is adjusted by the movement or rotation of the movable slider. In actual use, the slider is located inside the patient's anus. At this time, the surface wall of the slider will contact the inner wall of the patient's anus, and if the slider moves or rotates, it will contact the anus. Friction is...

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