Endoscopic Stitching Device Jaw for Multi-Orientation Needle Support
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Solution Overview
Problem
Current surgical stitching devices face challenges in efficiently and effectively suturing intracorporeally during endoscopic procedures, particularly in manipulating suture needles through tissue with minimal invasiveness and operational complexity.
Innovation Solution
A surgical stitching device featuring an arcuate suture needle, handle assembly, and tool assembly with a jaw that transitions between retracted and advanced configurations, allowing securement of the suture needle in various orientations, enabling single-hand operation and minimal tissue trauma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional surgical stitching device is used, then the device structure is simple, but it cannot support suture needles in various orientations
Solution Approach 1:
The jaw structure incorporates multiple recessed portions with different radii of curvature at specific locations to match different suture needle orientations. Each recessed portion is locally optimized to cradle a suture needle in a specific orientation, allowing the device to support multiple needle configurations without requiring complete structural redesign.
Solution Approach 2:
The jaw is designed with multiple recessed portions that can accommodate suture needles in various orientations simultaneously. This multi-functional design allows a single jaw structure to perform multiple functions: supporting needles at different angles, maintaining tension, and facilitating suturing operations without requiring multiple separate devices.
2Adaptability or versatility
If the jaw is designed to support multiple needle orientations, then adaptability improves, but the operational complexity increases
Solution Approach 1:
The handle assembly integrates multiple control functions into a unified structure that can be operated with one hand. The triggers and actuators are positioned and configured to allow simultaneous or sequential control of jaw opening/closing and needle manipulation, combining multiple operational functions into a single ergonomic handle that reduces operational complexity despite the multifunctional jaw.
3Object-affected harmful factors
If the suture needle is manipulated through tissue with minimal invasiveness, then tissue trauma is reduced, but the ability to effectively suture intracorporeally is compromised
Solution Approach 1:
The surgical stitching device employs a nested structure where the suture needle is contained within the jaw, which is part of the elongate shaft assembly that passes through the body cavity. This nested configuration allows the needle to be precisely positioned and manipulated deep within the body cavity through a minimally invasive access point, maintaining both tissue protection and effective intracorporeal suturing capability.
Data Source
AI summary
A surgical stitching device is configured for single hand operation that enables passage of a suture needle through tissue with minimal operational requirement. The surgical needle is selectively securable to a tool assembly of the surgical stitching device. The tool assembly includes a jaw configured to securely support various surgical needles in various orientations.