Launch Fixture for Optical Shape Sensing Instruments
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Solution Overview
Problem
Current medical instruments using optical shape sensing (OSS) technologies face challenges in efficiently deploying and exchanging multiple instruments during procedures, leading to a cluttered operating field and increased time spent on device registration, due to the need for individual registration of each instrument to a fixed frame of reference.
Innovation Solution
A launch fixture system that includes a first fixation device for securing an optical fiber, a storage area to maintain the fiber within specified dimensions, and a second fixation device for securing a flexible OSS-enabled instrument, allowing for rapid attachment and detachment of instruments to a fixed reference, minimizing the footprint and time spent on registration through a known geometric relationship between instrument frames and the launch fixture base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If each instrument is individually registered to a fixed frame of reference, then measurement precision is improved, but device complexity and time consumption increase
Solution Approach 1:
The system segments the registration process into two parts: (1) a common reference frame established by the launch fixture base, and (2) individual instrument frames registered to the common reference. This allows multiple instruments to share the same registration infrastructure while maintaining individual precision.
Solution Approach 2:
The launch fixture base serves as a universal reference structure that can accommodate multiple different OSS-enabled instruments. The common reference frame established by the base applies to all instruments, eliminating the need for separate registration procedures for each instrument type.
2Adaptability or versatility
If multiple instruments are deployed individually, then adaptability is improved, but productivity decreases due to clutter and registration time
Solution Approach 1:
The launch fixture base is pre-configured with a common reference frame before instruments are deployed. This preliminary setup eliminates the need for time-consuming registration procedures during deployment, allowing instruments to be rapidly attached and immediately operational.
Solution Approach 2:
Multiple instruments share the same launch fixture base and common reference frame, merging their registration requirements into a single infrastructure. This reduces the overall number of registration operations needed and minimizes operating field clutter.
3Measurement precision
If a fixed reference frame is established at the launch region, then measurement precision is improved, but the footprint and spatial requirements increase
Solution Approach 1:
The common reference frame is established locally at the launch fixture base rather than requiring a large distributed framework. This localized approach maintains measurement precision while minimizing the spatial footprint of the reference structure.
Data Source
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AI summary
A launch fixture for optical shape sensing (OSS) includes a first fixation device (172) configured to receive and secure an optical fiber. A fiber storage area (174) is configured to receive and maintain the optical fiber within specified dimensions. A second fixation device (180) is configured to receive and secure a flexible OSS enabled instrument. A launch region (176) is configured to receive and maintain the optical fiber in a known geometric configuration before entering the second fixation device. A feature (184) is provided for aligning and coupling to a launch fixture base, which is configured to secure the launch fixture.