Rotating Tissue Shaver with Navigation Sensor
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Solution Overview
Problem
Current surgical cutting instruments for nasal cavity procedures require repositioning or changing instruments to access and remove tissue at various locations, limiting efficiency and precision.
Innovation Solution
A surgical cutting instrument with a shaft assembly and integrated navigation sensors, allowing for real-time tracking and precise positioning within the nasal cavity, combined with a cutting member that can rotate and aspirate tissue through a radially outward opening, enabling cutting and removal without repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If surgeons use fixed opening cutting instruments, then the instrument structure is simple, but the ability to access tissue at various locations is limited requiring repositioning
Solution Approach 1:
The cutting member is made rotatable relative to the shaft, transforming the fixed opening limitation into a dynamic system where the opening can be oriented in multiple directions. The surgeon can rotate the cutting member to access tissue at various locations without repositioning the entire instrument, thereby improving adaptability while maintaining relatively simple instrument structure.
2Adaptability or versatility
If surgeons reposition the instrument to access different tissue locations, then various tissue sites can be reached, but surgical time and procedure complexity increase
Solution Approach 1:
The rotatable cutting member allows the surgeon to access multiple tissue locations by simply rotating the cutting member rather than repositioning the entire instrument. This dynamic adjustment significantly reduces surgical time and procedural complexity while maintaining the ability to reach various tissue sites within the nasal cavity.
3Measurement precision
If a fixed opening configuration is used, then the instrument is easier to manufacture, but precision in targeting specific tissue locations is reduced
Solution Approach 1:
The rotatable cutting member provides precision in targeting specific tissue locations by allowing the surgeon to orient the opening exactly where needed. While this adds some manufacturing complexity compared to a fixed opening, the overall instrument structure remains relatively simple, and the manufacturing complexity is justified by the significant improvement in positioning accuracy.
Solution Approach 2:
The orientation parameter of the cutting member can be changed by rotation, allowing precise targeting of different tissue locations. This parameter change capability improves positioning accuracy while maintaining ease of manufacture through a straightforward rotational mechanism rather than complex multi-component assemblies.
Data Source
AI summary
A surgical instrument and method of tracking the surgical instrument includes a shaft, a cutting member, and navigation system. The shaft has a shaft lumen, a shaft window, and a shaft edge. The cutting member is disposed within the shaft lumen and is configured to cyclically move from a first position to a second position relative to the shaft. The cutting member includes a cutting window opening, a cutting edge, and a suction lumen to cut the tissue portion with the cutting member in the first position. The navigation system includes a navigation sensor positioned on at least one of the shaft or the cutting member that is configured to be tracked within a patient for identifying a positional movement of the shaft or the cutting member within the patient.