Surgical Incision Instrument with Guide Fixture for Tendon Sheath
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Solution Overview
Problem
Conventional surgical instruments for tendon sheath and aponeurotic membrane incision face challenges such as post-surgical pain, difficulty in hand movement, high risk of tissue damage, and the need for extensive skin incision, especially in percutaneous surgeries which rely heavily on surgeon experience and often require additional assistance and facilities.
Innovation Solution
A surgical instrument with a tissue perforation means that forms a guided insertion path and an incised part reception means with a recessed portion for precise incision, allowing minimal skin incision and reducing the risk of damaging nerves, blood vessels, or tendons, enabling accurate and safe incision with minimal invasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If percutaneous surgery is performed by blind operation using single-use injection needles, then the level of skin invasion is reduced, but the risk of injuring nerve, blood vessel, tendon, or other tissues increases
Solution Approach 1:
The patent introduces a guide needle as an intermediary tool that first creates a safe insertion path through the skin and tissue layers. The guide needle has a curved tip design that directs it away from critical structures like nerves and blood vessels. Once the guide needle is in place, the actual incision tool is inserted through this pre-established safe path, thereby reducing the risk of direct injury to surrounding tissues while maintaining minimal skin invasion.
Solution Approach 2:
The patent employs preliminary action by first inserting a guide needle to establish the insertion path and locate the target tendon sheath before performing the actual incision. The guide needle allows the surgeon to confirm proper positioning and depth before introducing the incision blade, ensuring that the subsequent incision is made at the correct location with minimal risk to surrounding structures.
2Manufacturing precision
If open tendon sheath incision surgery is performed to directly view the tendon and tendon sheath, then the precision of incision is improved, but the area of skin incision and post-surgical scarring increases
Solution Approach 1:
The patent extracts only the essential function of visual confirmation by using a guide needle with visible depth markings and a curved tip that can be felt during insertion. This allows the surgeon to determine the correct insertion depth and position without making a large incision to directly visualize the tendon sheath, thereby maintaining incision precision while minimizing skin incision area.
3Device complexity
If percutaneous surgery is performed as a blind operation, then the device complexity and facility requirements are reduced, but the difficulty of operation increases due to reliance on surgeon experience
Solution Approach 1:
The guide needle serves as an intermediary that provides tactile feedback through its curved tip design and visible depth markings. This physical mediator translates the complex task of blind navigation into a simpler process of following the guide needle's predetermined safe path, reducing reliance on surgeon experience while maintaining operational simplicity and minimal facility requirements.
Data Source
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AI summary
To provide a surgical instrument for performing incision that enables surgery to be performed safely and easily, with minimal invasiveness and a reduced risk of damaging a tissue, such as a tendon, nerve, or blood vessel. The surgical instrument for performing incision includes incision reception means that receives an incision portion of a tendon sheath and an aponeurotic membrane, guide fixture means that fixes the incision reception means outside a body, and incision means that performs incision under guidance of the guide fixture means, the instrument being configured to incise a tendon sheath and an aponeurotic membrane by pressing and moving the incision means against the incision reception means. This surgical instrument for performing incision enables a tendon sheath and an aponeurotic membrane to be incised safely without significantly incising the skin or subcutaneous tissue, and makes it possible to conduct surgery percutaneously at an extremely low level of invasion.