Laparoscopic Clip Deployment Tool with Ratchet Positioning
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Solution Overview
Problem
Current laparoscopic devices lack efficient mechanisms for precise deployment and repositioning of occlusion clips during minimally invasive surgical procedures.
Innovation Solution
The development of a laparoscopic device with a housing, end effector, and occlusion clip deployment device, featuring active and passive repositioning mechanisms. These mechanisms allow for infinite adjustments and secure locking of the end effector's position within specific planes, facilitating precise occlusion clip deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a passive repositioning mechanism is used to lock the end effector position, then positioning stability is improved, but operational flexibility deteriorates
Solution Approach 1:
The passive repositioning mechanism incorporates a ratchet system that allows the end effector to be freely repositioned in one direction (unlocking flexibility) while preventing backward movement (locking stability). This dynamic mechanism enables the system to transition between flexible positioning and stable locking states based on operational needs.
2Measurement precision
If multiple connection wires are used for passive constraints, then positioning control is improved, but device complexity increases
Solution Approach 1:
The positioning control system is divided into separate functional components: passive constraints using connection wires for stabilization, and active controls using reels and buttons for repositioning. This segmentation allows each component to perform its specific function efficiently without interfering with others, managing complexity through functional decomposition.
Solution Approach 2:
The connection wires serve multiple functions: they act as passive constraints to stabilize the end effector position, and simultaneously serve as connection elements between the reels and the end effector components. This multi-functionality reduces the need for separate components, thereby managing device complexity while maintaining positioning control.
3Ease of operation
If a lever mechanism is used for occlusion clip deployment, then ease of operation is improved, but control precision may deteriorate
Solution Approach 1:
The lever mechanism serves as an intermediary between the operator's input and the occlusion clip deployment. It translates the operator's mechanical input into controlled movement of the deployment device, providing mechanical advantage for ease of operation while maintaining sufficient control precision through the lever's mechanical design.
Data Source
AI summary
A laparoscopic device comprising: (a) a housing operatively coupled to a first control and a second control; (b) an end effector operatively coupled to the first control, the end effector comprising a first component and a second component selectively repositionable with respect to one another within an X-Y plane, the end effector also including a third component selectively repositionable with respect to the second component within an Y-Z plane; (c) a laparoscopic conduit extending between the housing and the end effector; and, (d) an occlusion clip deployment device operatively coupled to the end effector and the second control.