Multi-Window Rotary Surgical Blade for Arthroscopy
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Solution Overview
Problem
Arthroscopic surgical procedures often require frequent exchange of cutting blades or tools during various stages, leading to increased operational time and reduced flexibility in surgical implementations.
Innovation Solution
A surgical cutting apparatus and control system that allows for a rotary cutting blade with multiple cutting windows, enabling customizable operation by controlling the angular orientation of the rotary member and adjusting the duty cycles of different cutting procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple cutting blades are exchanged during surgical procedures to accommodate different procedural stages, then the versatility and adaptability of the surgical system is improved, but the operational time increases and surgical efficiency decreases
Solution Approach 1:
The rotary cutting blade is designed with multiple cutting windows that can perform different cutting functions (e.g., first cutting window for initial cutting, second cutting window for refining) during a single procedural run. This multi-functionality eliminates the need to exchange blades between procedural stages, thereby maintaining versatility while reducing operational time.
Solution Approach 2:
Multiple cutting windows are integrated into a single rotary cutting blade structure. By combining multiple cutting functions into one blade, the system allows surgeons to perform sequential cutting operations without removing or changing the blade, thus reducing tool exchange time while maintaining adaptability.
2Productivity
If a single rotary cutting blade with multiple cutting windows is used, then the operational time is reduced by eliminating tool exchanges, but the device complexity increases
Solution Approach 1:
The rotary cutting blade is segmented into multiple discrete cutting windows, each potentially with different geometries or orientations. This segmentation allows each window to perform a specific cutting function while maintaining the overall simplicity of the rotary blade structure, balancing productivity improvement with manageable complexity.
3Measurement precision
If the angular orientation of the rotary member is controlled to activate different cutting procedures, then the precision and customization of cutting operations is improved, but the control system complexity increases
Solution Approach 1:
The rotary member's angular orientation is dynamically controlled during operation, allowing real-time selection of which cutting window is active. This dynamic control enables precise customization of cutting operations for different procedural stages without requiring multiple static blade configurations, achieving precision while managing control system complexity through software-based angular positioning.
Data Source
AI summary
A rotary surgical shaver includes an outer housing forming an outer cutting window at a distal end portion. A rotary member extends through the outer housing and in connection with a motor at a proximal end portion and forms a plurality of cutting windows comprising a first window and a second window at the distal end portion. A controller is configured to control the motor to position the rotary member over a first angular range aligned with the first window defining a first cutting sequence and control the motor to position the rotary member over a second angular range aligned with the second window defining a second cutting sequence. The controller is further configured to selectively adjust a duty cycle between the first cutting sequence and the second cutting sequence.