Surgical Device Loading Unit Detection Assembly
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Solution Overview
Problem
Existing surgical devices with linear driving mechanisms are not compatible with those using rotary motion, necessitating adapters to interface between linear and rotary driven systems, and there is a need to prevent handle assembly actuation before proper engagement with end effectors.
Innovation Solution
A surgical device with a housing, drive motor, battery, circuit board, and loading unit detection assembly that includes a detection link, switch pin, and switch button, allowing electronic communication for motor actuation upon proper mechanical engagement with the loading unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an adapter assembly is used to interface between linear driven end effectors and rotary driven surgical devices, then compatibility between different drive systems is achieved, but device complexity increases
Solution Approach 1:
The adapter assembly serves as an intermediary component that interfaces between the rotary drive system of the surgical device and the linear drive mechanism required by the end effector. The adapter includes a rotary-to-linear converter mechanism that transforms rotational motion into linear motion to operate the end effector, thereby enabling compatibility without requiring modification of the end effector itself.
Solution Approach 2:
The system is divided into separate functional modules: the rotary-driven surgical device handle, the adapter assembly with conversion mechanism, and the linear-driven end effector. This segmentation allows each component to be optimized independently while maintaining overall system compatibility through standardized interfaces.
2Ease of operation
If the handle assembly can be actuated before end effector engagement, then operational flexibility is improved, but premature actuation may occur causing safety issues
Solution Approach 1:
The system requires preliminary engagement and mechanical coupling of the end effector to the adapter assembly before the handle assembly can be actuated. The detection link and switch mechanism are positioned to verify proper engagement occurs first, preventing premature actuation while still allowing full operational flexibility once engaged.
Solution Approach 2:
The detection link provides mechanical feedback about the engagement status of the end effector. When the end effector is properly engaged, the detection link moves to activate a switch that enables actuation of the handle assembly. This feedback mechanism ensures that the system state is monitored and only allows operation when safe conditions are met.
3Reliability
If a detection link and switch mechanism are added to prevent premature actuation, then safety is improved, but device complexity increases
Solution Approach 1:
The detection link acts as a mechanical intermediary that translates the physical engagement state into a binary switch signal. This simple mechanical mediation provides safety verification without requiring complex electronic sensors or control systems, maintaining reliability while minimizing added complexity.
Data Source
AI summary
The present disclosure relates to hand held powered surgical devices, loading unit detection assemblies, surgical adapters and/or adapter assemblies for use between and for interconnecting the powered surgical device or handle assembly and an end effector for clamping, cutting, stapling and/or sealing tissue.