Thread hanging and punching auxiliary system and method in anal fistula operation

Abstract

According to the system and the method, a vertex expansion coefficient calculation unit is used for acquiring an elastic force vector and an elastic force vector interval corresponding to a vertex on a three-dimensional model according to dynamically contracted three-dimensional image data; the critical part calculation unit records deformation data of the tooth-shaped line in each frame along the punching part, and determines a critical part of which the deformation exceeds a first threshold value along the punching part on the tooth-shaped line according to the deformation data; according to the position of the fistula on the three-dimensional model and the elastic force vector of the fistula, the holing area pre-judging unit selects an area with the Z-axis elastic force vector component of the vertex of the fistula smaller than a second threshold value as a first holing area of a hanging line; according to the first holing area, vertically mapping the first holing area to the upper edge holing part of the tooth-shaped line; in the areas, except the critical part length, on the tooth-shaped line along the punching part, the area with the Z-axis elastic force vector component of the vertex smaller than a third threshold value is a second punching area; and the first holing area and the second holing area are marked and displayed on the three-dimensional model.

Description

technical field [0001] The invention relates to an auxiliary system for anorectal surgery, and more specifically relates to the technical field of anorectal three-dimensional image display and surgical operation auxiliary prompting. Background technique [0002] Although anal fistula is not an incurable disease, it is called the first killer of the anorectum. The reasons are: 1. The incidence rate is high, accounting for 5-8% of anorectal diseases; There is a certain risk of canceration; third, surgery as an effective treatment will cause a certain degree of damage to the anal sphincter; fourth, there is still a recurrence rate in surgery. [0003] Anal fistula thread-hanging surgery is commonly used clinically, including solid thread thread-hanging, imaginary thread-hanging, and combination of virtual and real thread-hanging. [0004] The real hanging thread is to insert the probe from the outer opening under anesthesia, pass through the fistula through the inner opening, ...

AI Technical Summary

Problems solved by technology

[0007] In the prior art, thread hanging is performed according to the experience of doctors in clinical operations according to the situation of fistula. For novice doctors, continuous guidance and experience accumulation are needed.

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