Purse-String Suture Instrument for Hemorrhoid Treatment
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Solution Overview
Problem
Current surgical methods for treating prolapsed hemorrhoids are invasive, painful, and ineffective for degrees III and IV, as they require precise piercing and suturing in a sensitive area, making them technically difficult and time-consuming.
Innovation Solution
An instrument with a tube and closure device that allows for a continuous, tightening suture to be applied by rotating and exposing sections of an elongated opening in the tube, enabling precise piercing and suturing while minimizing the risk of hitting the dentate line, with optional ultrasonic sensor and ligature capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional surgical methods are used to treat prolapsed hemorrhoids by making incisions and ligating arteries in the anorectal transition zone, then hemorrhoidal arteries can be effectively ligated, but the operation becomes painful and invasive
Solution Approach 1:
The patent introduces a tube as an intermediary device that allows the surgeon to perform ligature operations from a distance, avoiding direct manipulation in the painful anorectal transition zone. The tube serves as a mediator between the surgeon's instruments and the hemorrhoidal arteries, enabling effective ligation while minimizing patient pain and surgical invasiveness.
2Object-affected harmful factors
If minimally invasive hemorrhoidal artery ligature is performed using an ultrasonic probe inserted into the rectum, then pain and invasiveness are reduced, but the method fails to achieve desired results for prolapsed hemorrhoids of degree III and IV
Solution Approach 1:
The patent segments the treatment process into two distinct phases: first, minimally invasive ultrasonic localization of hemorrhoidal arteries through the tube; second, targeted ligature of both intramural arteries and prolapsed nodules through the same tube opening. This segmentation allows the method to maintain minimal invasiveness while achieving comprehensive treatment effectiveness for severe cases.
3Reliability
If purse-string sutures are used to draw tight prolapsed nodules, then prolapse can be decreased, but the operation becomes technically difficult and time-consuming due to the need for multiple precise piercings
Solution Approach 1:
The patent applies preliminary action by first introducing the tube into the rectum and positioning it to encompass the prolapsed hemorrhoids before performing any suturing. This preliminary positioning establishes a controlled working environment that guides subsequent piercing and suture placement, making the procedure easier and faster by reducing the number of precise piercings needed from four to five times to just two piercings through the tube.
4Reliability
If multiple piercings are performed to apply purse-string sutures, then adequate tightening can be achieved, but the time expenditure increases significantly
Solution Approach 1:
The patent merges multiple piercing actions into a single integrated procedure. By using the tube as a guiding structure, both piercing actions are performed through the same opening, and the suture material is threaded through the tube in one continuous motion. This merging of previously separate steps (multiple independent piercings) into a unified process through the tube dramatically reduces surgical time while maintaining adequate tightening effect.
Data Source
AI summary
An instrument for use in the treatment of prolapsed hemorrhoids by applying a purse-string suture includes a tube, which has a distal end, with which it can be inserted forward into the rectum of a patient. The tube also has an open proximal end and a shell wall encompassing an inner hollow space and is provided with an elongated opening. The opening extends in the axial direction of the tube from a distal end to a proximal end. The instrument also includes a closure device, which in a closing position closes the opening and by which the opening can be successively exposed from the distal to the proximal end.