Rotatable Round Blade Surgical Knife for Otologic Procedures
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Solution Overview
Problem
Current otologic surgical procedures face challenges due to the difficulty in accessing the ear canal and middle ear structures, requiring multiple instruments and increasing the risk of trauma and procedural inefficiency.
Innovation Solution
A surgical knife with an adjustable round blade that can rotate and tilt, allowing for various incision types to be made with a single instrument, reducing the need for multiple instruments and enhancing procedural efficiency and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple instruments are used for otologic procedures, then various cutting and access functions can be performed, but device complexity increases and procedural efficiency decreases
Solution Approach 1:
The surgical knife is designed with a rotatable round blade that can perform multiple functions including cutting, elevating, and accessing different ear canal angles. The blade rotation mechanism allows a single instrument to replace multiple specialized tools, reducing device complexity while maintaining functional versatility across various otologic procedures
Solution Approach 2:
The round blade is made rotatable relative to the shaft, allowing dynamic adjustment of the blade orientation during procedures. This dynamic capability enables the same instrument to adapt to different surgical needs and anatomical angles, providing multi-functionality without requiring multiple static instruments
2Ease of operation
If traditional surgical instruments are used, then cutting functions can be performed, but access to ear canal and middle ear structures becomes difficult
Solution Approach 1:
The surgical knife features a round blade configuration that matches the curved anatomy of the ear canal and tympanic membrane. This curved geometry allows the blade to follow the natural contours of the ear structures, improving access and maneuverability compared to straight blades, while the rotation mechanism adds controlled complexity for precise angular adjustment
3Productivity
If multiple instruments are exchanged during procedures, then various tasks can be completed, but procedural time increases and trauma risk increases
Solution Approach 1:
The rotatable round blade serves as a universal instrument that can perform cutting, elevation, and angular access tasks without requiring instrument exchanges. This multi-functionality eliminates the time lost in exchanging multiple specialized instruments while reducing the risk of trauma associated with repeated instrument manipulation and tissue handling
Data Source
AI summary
A surgical knife for otologic procedures includes a handle comprising a distal end and a proximal end, the handle further comprising a control member and a shaft comprising a distal end and a proximal end, the proximal end coupled to the distal end of the handle. The surgical knife further comprises a rod disposed within the shaft and comprising a distal end and a proximal end, wherein the proximal end of the rod is coupled to the control member, and wherein the rod is configured to rotate about a first rotation axis upon actuation of the control member. The surgical knife further comprises a round blade rotatably coupled to the distal end of the rod and configured to rotate about a second rotation axis, wherein the second rotation axis is disposed at a fixed, non-zero angle relative to the first rotation axis.