Occlusion Device Inflation Pressure Determination

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Solution Overview

Problem

Current methods lack a quantifiable way to determine the percentage opening of lumen diameter post-balloon angioplasty and rely on physician expertise for pressure application, risking vessel damage from over-inflation or under-expansion.

Innovation Solution

A method using medical imaging and image processing to determine occlusion characteristics, such as size, thickness, and composition, to calculate the optimal inflation pressure for occlusion devices, preventing damage by simulating lumen diameter expansion and applying radial pressure based on material properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If physician expertise is used to determine pressure application, then the procedure can be performed, but the determination is error-prone and time-consuming

Engineering Contradiction:
Improvepressure determinationVSAvoidpressure accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The patent replaces the physician's manual pressure determination with an automated image processing system that analyzes medical images to calculate optimal inflation pressure based on occlusion characteristics, eliminating human error and time consumption while improving precision

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system automatically determines pressure parameters by processing medical images and analyzing occlusion characteristics, allowing the procedure to self-determine optimal pressure without requiring physician expertise or manual intervention

Inventive Principle:
Principle #25Self-service

2Productivity

If pressure is applied to inflate occlusion device, then lumen expansion is achieved, but vessel damage may occur from over-inflation

Engineering Contradiction:
Improvelumen expansion efficiencyVSAvoidvessel damage
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary analysis of medical images to determine optimal inflation pressure before the actual procedure, allowing the physician to apply pressure with confidence that it is both sufficient for expansion and safe to avoid vessel damage

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system provides feedback by calculating and communicating the optimal pressure value to the physician based on analyzed occlusion characteristics, enabling informed decision-making during pressure application to balance expansion efficiency with safety

Inventive Principle:
Principle #23Feedback

3Object-affected harmful factors

If pressure is applied to inflate occlusion device, then lumen expansion is achieved, but under-inflation may not allow efficient expansion

Engineering Contradiction:
Improveinsufficient expansionVSAvoidpressure application
Core Design Contradiction:
Object-affected harmful factorsVSStress or pressure

Solution Approach 1:

The system performs preliminary calculation of the optimal pressure value based on image analysis of occlusion characteristics, ensuring that the pressure applied is sufficient to achieve efficient lumen expansion without wasting excessive pressure

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system changes the pressure parameter by calculating an optimal value specific to each patient's occlusion characteristics, ensuring that the pressure applied is both sufficient for expansion and minimized to avoid unnecessary stress

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP3733105B1Method and system for determining pressure to achieve inflation of an occlusion device
Publication Date: 2024.10.23 SIEMENS HEALTHINEERS AG
  • EP3733105B1 patent drawingFigure 1
  • EP3733105B1 patent drawingFigure 2~3
  • EP3733105B1 patent drawingFigure 4

AI summary

A method (200) and system (100) for determining a pressure to achieve inflation of an occlusion device is disclosed. In one aspect, the method (200) includes obtaining (201) at least one medical image of an occlusion in a blood vessel. The method (200) further includes determining (202) by an image processor from the at least one medical image one or more characteristics associated with the occlusion. Additionally, the method (200) includes determining (203) a pressure to be applied to the occlusion device based on the one or more characteristics associated with the occlusion.