Single-Spine Handle for Surgical Devices with Multiple End Effectors
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Solution Overview
Problem
Existing multi-lumen surgical instrument handles, particularly those with Y-shaped configurations, are prone to instability and ergonomic difficulties, leading to inconsistent actuation and increased costs due to fragility and complex packaging, making them unsuitable for rigorous conditions and efficient operation.
Innovation Solution
A single-spine handle design with parallel push rods and a toothed mechanism, incorporating a spring member and two-part fitting, allows for stable and consistent actuation of multiple end effectors, mirroring the size and shape of single-lumen device handles, thereby enhancing ergonomics and reducing manufacturing and storage costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a Y-shaped handle configuration is used for multi-lumen devices, then multiple end effectors can be actuated, but the handle becomes unstable and prone to buckling under substantial force
Solution Approach 1:
The patent merges multiple actuation functions into a single integrated handle body rather than using separate Y-shaped branches. The handle incorporates multiple lumens (first, second, and third lumens) that run parallel through a unified structure, allowing actuation of multiple end effectors while maintaining structural integrity and stability under force.
2Adaptability or versatility
If a Y-shaped handle is used, then multiple effectors can be controlled, but the handle becomes cumbersome and ergonomically difficult to operate
Solution Approach 1:
The patent combines multiple control functions into a single ergonomic handle body that resembles conventional single-lumen device handles. The unified structure with integrated lumens provides a compact, easy-to-grip design that eliminates the cumbersome Y-shape while maintaining the ability to control multiple end effectors simultaneously.
3Adaptability or versatility
If a bifurcated handle is used for double lumen devices, then separate actuators can be provided, but the structure becomes fragile and requires complex packaging
Solution Approach 1:
The patent integrates multiple actuation mechanisms within a single handle structure rather than using separate bifurcated arms. The handle contains multiple lumens that accommodate separate push wires and actuators internally, eliminating the need for complex external Y-shaped branching while maintaining separate actuation capability for each end effector.
4Strength
If a Y-shaped handle with rigid arms is used, then secure linkage can be achieved, but the handle size increases and manufacturing cost increases
Solution Approach 1:
The patent consolidates multiple linkage functions into a single handle body with integrated lumens, eliminating the need for separate rigid Y-shaped arms. This unified structure reduces material requirements, simplifies manufacturing processes, and lowers production costs while maintaining secure linkage between actuators and end effectors through the integrated lumen system.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The new handle design ensures stable and consistent actuation of multiple end effectors under severe conditions, reducing the risk of buckling and breaking, while being ergonomically advantageous and cost-effective, facilitating easier packaging, sterilization, and storage.
Implementation Method 1
incorporating a spring member and two-part fitting, allows for stable and consistent actuation of multiple end effectors
Data Source
AI summary
A handle for a surgical instrument multiple surgical end effectors, the handle being configured to provide a complete and consistent actuation of the different end effectors regardless of whether the instrument is flexible or rigid. The handle is similar in size and configuration to handles of similar single end effector devices.