Shape sensed ultrasound probe for fractional flow reserve simulation

一种血流储备分数、感测系统的技术，应用在形状感测系统领域，能够解决扭曲、不正确测量等问题

Active Publication Date: 2016-01-27
KONINKLIJKE PHILIPS NV
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Problems solved by technology

Although the pressure line permits pressure to be measured, its insertion can also cause distortions in the flow pattern, resulting in incorrect measurements

Method used

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  • Shape sensed ultrasound probe for fractional flow reserve simulation
  • Shape sensed ultrasound probe for fractional flow reserve simulation
  • Shape sensed ultrasound probe for fractional flow reserve simulation

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[0014] Fractional flow reserve (FFR) is a technique used in coronary catheterization to measure the pressure difference across, for example, a narrowed coronary artery. Pressure lines are commonly used in invasive procedures to measure the pressure difference before and after a stenosis, potential stenosis, or region of interest. According to the present principles, an alternative is employed by using a shape-sensing imaging probe, such as an intravascular ultrasound (IVUS) probe or an optical coherence tomography (OCT) imaging device, for the fractional flow reserve simulation. While IVUS (or OCT) collects continuous measurements of lumen diameter and vessel wall, even in the presence of heart beating and respiratory motion, shape sensing permits three-dimensional reconstruction of vessels. This information can be used to generate accurate three-dimensional or even four-dimensional models (spatial and temporal) of vessels as input for FFR calculations using eg computational f...

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Abstract

A medical system includes a medical instrument (102) configured for interventional deployment and a shape sensing system (104) mounted on or in the medical instrument and configured to measure a shape of the medical instrument during the interventional deployment. An imaging device (106) is mounted on or in the medical instrument and configured to image a lumen in which the imaging device is deployed. A registration module (140) is configured to register the shape of the medical instrument to an image of the lumen at a particular time to reconstruct a three-dimensional geometry of the lumen, accounting for motion.

Description

technical field [0001] The present disclosure relates to medical instrumentation, and more particularly to shape sensing systems for use with ultrasound probes to calculate fractional flow reserve in medical applications. Background technique [0002] Fractional flow reserve (FFR) is used during coronary catheterization to measure the pressure difference across coronary artery stenosis (narrowing, usually due to atherosclerosis) to determine if the stenosis is preventing oxygen delivery to the heart muscle (myocardial insufficiency). technology of the possibility of blood). During coronary catheterization, a sheath and guide wire are used to insert the catheter. FFR uses small sensors (usually transducers) on the end of the wire to measure pressure, temperature, and flow to determine the precise severity of the lesion. Current clinical practice is to use pressure wires to measure pressure before and after the underlying stenosis. Alternatively, a pullback of the pressure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00A61B5/02A61B5/107A61B8/08A61B8/12A61B8/00A61B5/06
CPCA61B5/6852A61B8/085A61B8/0891A61B8/12A61B8/445A61B8/5276A61B5/0066A61B5/0073A61B5/0084A61B5/02028A61B5/065A61B5/066A61B5/1076A61B5/4887A61B2017/00084A61B2090/3735A61B2090/3782A61B2034/105A61B2034/2051A61B2034/2061G16H50/50G16H30/40G16H40/63A61B2090/367A61B5/026A61B2560/0475
Inventor T·克林德H·施米特M·格拉斯
Owner KONINKLIJKE PHILIPS NV
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