Shape Sensing Fiber Input for Medical Device Identification
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Solution Overview
Problem
In medical procedures, it is challenging to accurately map the proximal section of a medical device visible outside the body to its representation on a display screen, leading to incorrect positioning and unnecessary trauma, especially when multiple devices are involved, as current methods require manual movement to identify active devices.
Innovation Solution
Integrating shape sensing optical fibers into medical devices to generate user input signals through changes in optical shape sensing data, allowing for the differentiation of active devices and providing feedback indicators like colored bands, LEDs, and haptic feedback to facilitate accurate device identification and interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual movement of the device is performed to identify active devices, then device identification can be achieved, but procedural time is wasted and unnecessary trauma to vessels and tissues occurs
Solution Approach 1:
The system performs preliminary actions by pre-configuring multiple devices with unique identifiers and establishing their spatial relationships before the procedure begins. The processor system pre-calculates and stores mapping data between proximal and distal sections of all devices, so that during the procedure, identification is instantaneous rather than requiring manual movement and observation.
Solution Approach 2:
The system creates a virtual copy or representation of the physical device configuration on the display screen. The processor generates and displays visual representations of multiple devices with their proximal and distal sections, allowing the user to identify active devices through the display rather than physical manipulation. This digital twin approach eliminates the need for manual device movement while maintaining accurate identification.
2Measurement precision
If manual movement of the device is performed to map proximal section to display representation, then device positioning can be identified, but incorrect positioning may occur and vessels/tissues suffer unnecessary trauma
Solution Approach 1:
The system implements continuous feedback by monitoring the positions of all devices and their components in real-time. The processor compares the actual device positions with the displayed representations, and when a user interacts with a proximal section, the system immediately provides visual feedback on the display showing which distal section corresponds to that proximal section. This eliminates guesswork and prevents incorrect positioning that could cause trauma.
Solution Approach 2:
The patent replaces the mechanical approach of manually moving and physically manipulating devices to identify positioning with an optical and computational system. Cameras or sensors capture device positions, processors analyze the data, and displays present the information visually. This substitution of mechanical manipulation with optical-computational systems eliminates the need for physical device movement that could displace devices or damage delicate vessels and tissues.
3Adaptability or versatility
If multiple devices are used during the procedure, then comprehensive coverage is achieved, but device identification and differentiation becomes difficult
Solution Approach 1:
The system segments the identification problem by assigning unique identifiers to each device and to specific sections of each device. The processor divides the complex task of identifying multiple devices into manageable units by tracking each device's proximal section, distal section, and intermediate sections separately. This segmentation allows the display to present clear, differentiated information for each device without confusion.
Solution Approach 2:
The system applies local quality by providing device-specific visual characteristics and identification features at each device's location on the display. Each device can have unique color coding, labeling, or visual markers that are consistently applied to all sections of that device. When a user interacts with a specific proximal section, the system highlights only the corresponding distal section of that specific device, providing localized feedback that prevents confusion between multiple devices.
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
Enables efficient registration and visualization of medical instruments during procedures, reducing trauma and improving procedural efficiency by clearly distinguishing active devices and allowing for precise input recognition, thereby enhancing navigation and control.
Implementation Method 1
One principle involved makes use of distributed strain measurement in the optical fiber using characteristic Rayleigh backscatter or controlled grating patterns
Data Source
AI summary
A system for generating a manual input on a shape sensing fiber includes a shape enabled device (102) including one or more shape sensing optical fibers. An input device (106) is configured on a portion of the one or more shape sensing optical fibers, wherein a change in optical shape sensing data associated with the input device distinguishable from other shape sensing data, generates an input signal. A processor system (112) is configured to receive the input signal and perform an action responsive to the input signal.