Rotational Position Determination for Stent Navigation
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Solution Overview
Problem
Existing methods for determining the rotational position of insertion devices, such as stents, within objects like vessels require complex interventional devices for precise positioning, which can be technically cumbersome and inefficient.
Innovation Solution
A rotational position determination apparatus that calculates and assists in determining the entry rotational position of an insertion device at the entry site, allowing it to be navigated along an inner path to a target site without the need for rotation at the target site, using a three-dimensional vessel geometry model and simulation to ensure accurate alignment with the vessel configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex rotation mechanisms are used at the target site to achieve precise rotational positioning of insertion devices, then rotational positioning precision is improved, but device complexity increases
Solution Approach 1:
The system performs preliminary calculation of the entry rotational position using a three-dimensional vessel geometry model and simulation of device navigation along the inner path. This preliminary action determines the correct entry orientation before the actual insertion procedure, eliminating the need for complex rotation mechanisms at the target site. The entry rotational position is calculated in advance based on the desired target rotational position and the simulated navigation path.
Solution Approach 2:
The patent replaces mechanical rotation mechanisms at the target site with a computational approach. Instead of using complex mechanical systems to rotate and position the insertion device at the difficult-to-access target site, the system uses computer-based three-dimensional modeling and simulation to calculate the precise entry rotational position, substituting mechanical complexity with computational analysis.
2Manufacturing precision
If complex interventional devices with rotation mechanisms are used to position insertion devices at the target site, then positioning accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The system performs preliminary determination of the entry rotational position through three-dimensional modeling and navigation simulation before the actual intervention. This preliminary calculation provides operators with clear guidance on the required entry orientation, eliminating the need for complex real-time adjustments and rotation maneuvers during the procedure, thereby improving ease of operation while maintaining positioning accuracy.
3Adaptability or versatility
If rotation mechanisms are incorporated at the target site to enable rotational positioning, then adaptability is improved, but device complexity increases
Solution Approach 1:
The system achieves adaptability through preliminary computational analysis rather than mechanical complexity. The three-dimensional vessel geometry model and navigation simulation allow the system to adapt to different vessel configurations and target sites by recalculating the entry rotational position for each specific case, providing versatility without requiring complex rotation mechanisms at the device level.
Data Source
AI summary
A rotational position determination apparatus is configured to determine an entry rotational position, which defines a rotational position of an insertion device like a stent at an entry site, such that a navigation of the insertion device from the entry site to a target site along an inner path results in a rotational position of the insertion device at the target site being equal to a desired target rotational position based on a representation of the inner path and the desired target rotational position. If the insertion device is arranged in the determined entry rotational position at the entry site and then navigated to the target site, it is therefore not necessary to rotate the insertion device at the target site.