Integrated Snare and BX Forceps for Single-Step Polyp Removal
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Solution Overview
Problem
Existing methods for removing colorectal polyps, such as using a snare tool, often require multiple attempts due to difficulty in complete snare placement around the polyp.
Innovation Solution
A surgical instrument combining a snare tool with biopsy (BX) forceps, allowing for simultaneous stabilization and retrieval of the polyp, facilitating single-step removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a snare tool is used for polyp removal, then the polyp can be cut and cauterized, but multiple attempts are required due to difficulty in complete snare placement
Solution Approach 1:
The patent combines a snare tool with biopsy forceps into a single integrated instrument. The snare loop and forceps jaws work together synergistically - the forceps stabilize and retrieve the polyp while the snare provides cutting and cauterization capabilities. This merging eliminates the need for multiple separate attempts that would be required when using a snare tool alone, as the forceps ensure proper polyp capture and positioning before snare deployment.
2Ease of manufacture
If a snare tool is used for polyp removal, then cutting and cauterization can be performed, but complete snare placement around the polyp is difficult to achieve
Solution Approach 1:
The biopsy forceps act as an intermediary tool between the operator and the polyp during the removal process. The forceps jaws first engage and stabilize the polyp, providing a secure grip that facilitates subsequent snare placement. This intermediary action makes the overall procedure easier to perform, as the forceps handle the difficult task of polyp capture and positioning, allowing the snare to then be placed more easily around the already-stabilized polyp.
Data Source
AI summary
Disclosed are various embodiments of a surgical instrument for colorectal polyp removal. In various embodiment, the surgical instrument has an elongate flexible tubular sheath having a proximal end and a distal end, a snare having a loop and controlled by a pair of wires, and a biopsy forceps having a pair of jaws sized to fit within the loop of the snare. Both the biopsy forceps and the snare are routed through the elongate flexible tubular sheath so that the loop of the snare and the pair of jaws exit the distal end of the elongate flexible tubular sheath.