Vascular Device Marker Geometry for Torsional Deployment Detection

Solution Overview

Problem

Vascular therapy devices, such as endografts and stents, can torque axially during delivery, leading to twisted deployments that exert undesired forces on tissue, compromise placement, and potentially cause damage to blood vessels.

Innovation Solution

A torque detection system for vascular therapy devices using a matrix of imageable markers to detect non-torsional or torsional deployments by comparing baseline and imaged device geometries, employing a torque detection controller or geometry manager to alert clinicians of any torsional deployment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If vascular therapy devices are made flexible in the axial direction to conform to tortuous blood vessels, then adaptability is improved, but torsional deployment occurs leading to tissue damage

Engineering Contradiction:

ImproveadaptabilityVSAvoidtissue damage

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary detection of the device geometry and orientation using imageable markers before final deployment. By comparing the imaged geometry against the baseline geometry, the system can detect torsional deployment early and alert the operator to correct the device orientation before it causes tissue damage, thus preventing the harmful effect while maintaining adaptability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system provides real-time feedback to the operator by comparing the current device geometry (from imaged markers) with the baseline geometry. This feedback mechanism allows the operator to detect and correct torsional deployment during the deployment process, preventing tissue damage while maintaining the device's flexibility and adaptability to blood vessel anatomy.

Inventive Principle:

Principle #23Feedback

2Strength

If vascular therapy devices are made firm in the radial direction to enforce wall structure, then strength is improved, but torsional forces are exerted on tissue during delivery

Engineering Contradiction:

ImprovestrengthVSAvoidundesired forces on tissue

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary detection of the device geometry and orientation using imageable markers before final deployment. By comparing the imaged geometry against the baseline geometry, the system can detect torsional deployment early and alert the operator to correct the device orientation before it causes tissue damage, thus preventing the harmful effect while maintaining adaptability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system provides real-time feedback to the operator by comparing the current device geometry (from imaged markers) with the baseline geometry. This feedback mechanism allows the operator to detect and correct torsional deployment during the deployment process, preventing tissue damage while maintaining the device's flexibility and adaptability to blood vessel anatomy.

Inventive Principle:

Principle #23Feedback

3Measurement precision

If a torque detection system with imageable markers is implemented, then detection precision is improved, but device complexity increases

Engineering Contradiction:

Improvedetection precisionVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The device is segmented into multiple sections with imageable markers distributed along its length. This segmentation allows the system to detect torsional deployment at specific locations without requiring the entire device to be complex. The markers provide precise geometric information that can be detected and compared against the baseline, achieving high detection precision with minimal added complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system creates a digital copy or model of the device geometry using imageable markers and compares it against the baseline geometry. This copying approach allows for precise detection of torsional deployment without requiring complex mechanical sensors or additional hardware. The geometric comparison provides accurate detection while keeping the physical device structure relatively simple.

Inventive Principle:

Principle #26Copying

Data Source

PatentEP3727180B1Torsional deployment detection of a vascular therapy device

Publication Date: 2026.02.18 KONINKLIJKE PHILIPS NV

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AI summary

A torque detection vascular therapy system employing a vascular therapy device (101) and a torque detection controller (130). The vascular therapy device (101) is operable to be transitioned from a pre-deployed state to a post-deployed state, and includes a matrix of imageable markers representative of a geometry of the vascular therapy device (101). The torque detection controller (130) controls a detection of a non-torsional deployment or a torsional deployment of the vascular therapy device (101) subsequent to a transition of the vascular therapy device (101) from the pre-deployed state to the post-deployed state by deriving a detection of the non-torsional deployment or the torsional deployment of the vascular therapy device (101) from a matrix orientation similarity or a matrix orientation dissimilarity between a baseline device geometry of the vascular therapy device (101) represented by the matrix of the imageable markers and a imaged device geometry of the vascular therapy device (101) represented by the matrix of imageable markers.