Variable-Mode Surgical Handle Assembly for Adaptive Staple Deployment
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Solution Overview
Problem
Existing surgical staplers lack flexibility in operation modes, failing to accommodate varying tissue types and user fatigue, which can affect staple deployment efficiency and user comfort.
Innovation Solution
A surgical handle assembly with a mode selection capability that allows for two or more modes of operation, adjusting the distance of actuation shaft advancement based on tissue type and user needs, using a switch to pivotally connect a driving pawl to a swing wheel for different staple deployment numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a surgical stapler uses a fixed single mode of operation, then the device structure is simple, but it cannot accommodate varying tissue types and user fatigue conditions
Solution Approach 1:
The handle assembly incorporates a mode selection switch that allows dynamic transition between at least two operational modes (first mode and second mode). This enables the device to adapt its actuation shaft advancement distance based on different tissue types and user needs, transforming a static single-mode device into a dynamic multi-mode system without significantly complicating the overall structure.
Solution Approach 2:
The surgical stapler handle assembly is designed to perform multiple functions through a single integrated structure. The mode selection capability allows the same handle assembly to accommodate varying tissue types and user fatigue conditions, making the device universally applicable to different surgical scenarios without requiring multiple separate devices.
2Productivity
If the actuation shaft advancement distance is fixed, then the device structure is simple, but it cannot optimize staple deployment for different tissue types
Solution Approach 1:
The actuation shaft advancement distance is made dynamic through the mode selection switch. In the first mode, the actuation shaft advances a first distance, and in the second mode, it advances a second distance. This dynamic adjustment optimizes staple deployment efficiency for different tissue types while maintaining a relatively simple implementation through the existing handle assembly structure.
3Ease of operation
If a single actuation distance is used, then the operation is simple, but it does not account for user fatigue and requires excessive force in some cases
Solution Approach 1:
The device allows dynamic selection between different operational modes to accommodate user fatigue. The mode selection switch enables users to transition between a first mode and a second mode, where the actuation shaft advances different distances, thereby adjusting the force requirements based on user comfort needs while maintaining simple operation within each mode.
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
Enhances staple deployment efficiency by allowing tailored operation modes for different tissue types and user conditions, reducing the force required and improving user comfort.
Implementation Method 1
A driving pawl can be pivotally connected to a swing wheel to advance an actuation shaft linearly in a distal direction in response to actuation of the movable handle member
Data Source
AI summary
The present disclosure includes apparatuses for a surgical handle assembly. An example apparatus includes a movable handle member and a switch configured to provide two or more modes of operation for the movable handle member and a driving pawl pivotally connected to a swing wheel configured to advance an actuation shaft linearly in a distal direction in response to actuation of the movable handle member.