Optical Shape Sensing Virtual Markings for Catheter Measurements
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing interventional devices require dedicated calibrated devices with radiopaque markers for measurements, which is inconvenient and inefficient, especially in endovascular procedures where devices need to be replaced, and not all devices have these markers.
Innovation Solution
A processing system that uses optical-shape-sensing-enabled interventional devices to provide reconstructed shape data and virtual markings, allowing for measurements without the need for dedicated calibrated devices, by turning any OSS-enabled device into a 'virtual' calibrated device capable of performing live 3D measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dedicated calibrated devices with radiopaque markers are used for measurements, then measurement precision is improved, but device complexity and workflow efficiency deteriorate due to the need for device replacement and tedious operations
Solution Approach 1:
The patent creates virtual copies of radiopaque markers in the form of virtual markings overlaid on fluoroscopic images. These virtual markings are generated based on the known geometry and position of the interventional device, allowing measurements to be performed on the virtual representation rather than requiring physical radiopaque markers on dedicated calibrated devices.
Solution Approach 2:
The patent replaces the mechanical system of physical radiopaque markers and dedicated calibrated devices with an optical/digital system. Virtual markings are generated and displayed on the fluoroscopic image, eliminating the need for physical measurement devices with radiopaque markers while maintaining measurement precision.
2Measurement precision
If dedicated calibrated devices with radiopaque markers are used for measurements, then measurement precision is improved, but productivity deteriorates due to the need for device replacement and tedious work
Solution Approach 1:
The patent makes any interventional device with fluoroscopic visibility universal for measurement purposes. Instead of requiring specialized calibrated devices, any device that appears on the fluoroscopic image can serve as a measurement reference, as virtual markings are generated based on its known geometry and position, enabling measurements without device replacement.
Solution Approach 2:
Virtual markings are created as digital copies of measurement references on the fluoroscopic image itself, eliminating the need to physically replace devices with dedicated calibrated measurement devices. This copying approach maintains measurement precision while improving productivity by avoiding device replacement.
3Ease of operation
If conventional interventional devices without radiopaque markers are used, then ease of operation is improved, but measurement precision deteriorates as these devices cannot perform measurements
Solution Approach 1:
The patent overlays virtual markings (digital copies of measurement references) onto the fluoroscopic image of conventional interventional devices. These virtual markings are generated based on the known geometry and fluoroscopic appearance of the device, enabling measurement precision without requiring physical radiopaque markers on the device itself.
Solution Approach 2:
The patent replaces the mechanical requirement of physical radiopaque markers on devices with a digital/virtual system. Virtual markings are generated and displayed on the fluoroscopic image, providing measurement precision while allowing the use of conventional interventional devices without modifying their physical structure.
4Ease of operation
If virtual markings are provided based on reconstructed shape data, then ease of operation is improved by eliminating dedicated calibrated devices, but measurement precision may deteriorate without image registration
Solution Approach 1:
The patent creates virtual markings as digital copies that are directly overlaid on the fluoroscopic image. By using the fluoroscopic image itself as the reference frame and generating virtual markings based on the known geometry and position of the interventional device within that image, the system eliminates the need for separate image registration processes while maintaining measurement precision.
Data Source
AI summary
The invention relates to a processing system (200) that is arranged to cooperate with an optical-shape-sensing-enabled elongated interventional device (1020, 1120, 1220, 1320, 1420), such as a catheter comprising an optical fiber. A reconstructed shape data providing unit (130) provides reconstructed shape data for the interventional device (1020, 1120, 1220, 1320, 1420). A virtual marking provider unit (140) provides at least one virtual marking (1020A, 1020B, 1101, 1102, 1103, 1201, 1203, 1204, 1301, 1302, 1401) based on the reconstructed shape data, for example as overlay to a x-ray image. The present invention thus turns any OSS-enabled device into a calibrated device, suitable for all kinds of live 3D measurements.