Surgical Actuation Handle Rolling Element Mechanism
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Solution Overview
Problem
Existing surgical actuation handles for procedures like ILM and ERM removal are structurally complex, difficult to assemble, and involve too many parts, making them inefficient for precise tissue manipulation during ophthalmic surgeries.
Innovation Solution
An actuation handle mechanism featuring rolling elements on inclined ramps that translate lever pressure into horizontal movement, activating a surgical instrument from a deactivated to an activated state by pushing the actuation tube forward, simplifying the design and assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional actuation handle designs are used, then the surgical instrument can be activated, but the structure becomes complicated and difficult to assemble
Solution Approach 1:
The patent combines multiple actuation components into a single integrated actuation handle assembly. The first and second levers, rolling elements, and actuation tube are merged into one cohesive unit that operates as a unified mechanism, reducing the number of separate parts and simplifying assembly while maintaining reliable activation function.
Solution Approach 2:
The actuation handle is designed to perform multiple functions through its components: the levers provide both mechanical advantage and positioning, the rolling elements provide both motion transfer and mechanical advantage, and the actuation tube provides both protection and activation. This multi-functionality reduces the need for separate dedicated components.
2Reliability
If traditional actuation handle designs are used, then the surgical instrument can be activated, but the assembly process becomes difficult
Solution Approach 1:
The actuation handle is segmented into distinct modular components (first lever, second lever, rolling elements, actuation tube) that can be manufactured separately and then assembled together. This segmentation allows for specialized manufacturing of each component while maintaining overall system functionality and simplifying the assembly process.
Solution Approach 2:
The rolling elements serve as intermediary components between the levers and the actuation tube, providing a simple mechanical interface that facilitates easy assembly. These rolling elements act as mediators that convert lever motion into tube activation without requiring complex connection mechanisms.
3Ease of operation
If existing actuation handles are used, then jaw closure can be achieved, but the number of parts increases
Solution Approach 1:
The patent merges the functions of multiple components into fewer parts. The first and second levers work together with the rolling elements to achieve jaw closure, eliminating the need for separate actuation mechanisms for each lever. This consolidation reduces the total number of parts while maintaining ease of operation.
Solution Approach 2:
The rolling elements automatically convert the motion from the levers into actuation tube movement without requiring additional components or complex mechanisms. The system uses the inherent mechanical properties of the rolling elements to self-generate the necessary motion for jaw closure.
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 mechanism reduces complexity and assembly difficulties, providing a more efficient and intuitive way to activate surgical instruments, enhancing precision and ease of use during procedures.
Implementation Method 1
pressing one or more levers of the plurality of levers causes the rolling elements to roll down on at least one of the corresponding number of first rolling components or second rolling components
Implementation Method 2
rolling elements on inclined ramps that translate lever pressure into horizontal movement
Data Source
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AI summary
Certain embodiments provide a surgical instrument comprising surgical instrument comprising an device having a functional end and a main handle comprising a distal end coupled to the device. The surgical instrument further comprises an actuation handle insert comprising a number of first rolling components and an actuation tube coupled to the actuation handle insert, wherein the functional end of the device at least partially extends outside of the actuation tube when the device is deactivated. The surgical instrument further comprises levers comprising second rolling components. The surgical instrument further comprises a plurality of rolling elements, wherein each of the rolling elements is placed between one of the second rolling components and one of the first rolling components and pressing one or more of the levers pushes the actuation handle insert forward relative to the device, causing the actuation tube to transition the device from the deactivated state to an activated state.