Noninvasive measuring method and device for pressure in blood vessels
A measurement method and technique of internal pressure, applied in vascular assessment, cardiac catheterization, etc., can solve problems such as poor accuracy, poor sensor stability, and being in the laboratory stage, so as to facilitate follow-up, facilitate data input, and avoid bleeding risks. Effect
Active Publication Date: 2014-08-13
RENJI HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE +1
View PDF5 Cites 14 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
4) Portal pressure gradient (HPVG), but the above methods require preoperative puncture pressure measurement, which has the risk of bleeding
The determination of this method is: the accuracy is poor, it can only be used as a qualitative diagnosis of portal hypertension, and it has not become a commonly used pressure measurement method in the world
2. Use the pressure sensor under the gastroscope to measure the adherent pressure of gastric esophageal varices. The disadvantage of this method is that it cannot eliminate the influence of blood vessel wall tension on the adherent pressure measurement,
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0055] For the present invention, taking liver cirrhosis and portal hypertension as an example, the specific embodiment of the non-invasive measurement method of intravascular pressure of the present invention is described as follows, and the steps can be found in figure 1 The flowchart shown.
[0056] First, through existing medical means, high-resolution spiral CT technology is used to obtain three-dimensional images of the distribution of blood vessels in the portal vein system. And through the fluid analysis and modeling tools, the 3D images obtained by the CT machine are locally modeled and then combined to establish a 3D model of blood vessel distribution.
[0057] The local modeling is recombined, that is, through the CT scan results, images of the cross-sectional shapes and corresponding lengths of blood vessels at different positions are obtained. Create a series of cross-sectional graphics. For example, given the cross-sectional graphics of the inner wall of the...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM
Login to view more Abstract
The invention relates to a method for utilizing a hydromechanics emulation technique to noninvasively measure the pressure in the blood vessels of a sick body before and after an operation in biomedicine. The invention aims to utilize the hydromechanics emulation technique to acquire the pressure in the blood vessels under a noninvasive condition by emulating the inner flow of the blood vessels so as to assess the pressure in the vein and/or artery before the operation. Compared with the pressure in the blood vessels measured according to the prior pressure-measuring method, the pressure in the blood vessels measured according to the emulation method provided by the invention has the advantages that the pressure in the blood vessels, such as the portal vein, is acquired under the noninvasive condition, and a brand new noninvasive measuring method and idea are initiated. The method provided by the invention is a noninvasive pressure-measuring method, so that the bleeding risk of preoperative puncture pressure measurement is avoided. A computer imaging technique is utilized to convert a pure data model into a three-dimensional imaging data model, so that a patient can conveniently access and input data and the method has the characteristics of simpleness, convenience and high speed.
Description
technical field [0001] The invention relates to a method for non-invasively measuring the internal pressure of blood vessels of a diseased body before and after operation in biomedicine by using fluid mechanics simulation technology. In particular, it relates to a method for non-invasively measuring the internal pressure of blood vessels by means of computer simulation software. Background technique [0002] Now take liver cirrhosis and portal hypertension as an example to illustrate the importance and application value of the present invention. Liver cirrhosis and portal hypertension have a high incidence of hepatitis B in my country, which seriously threatens human health. Among them, a large part of patients will develop cirrhotic portal hypertension, leading to the biggest cause of death in patients with cirrhosis and portal hypertension, which is the increase of portal vein pressure, which eventually causes rupture and bleeding of gastric esophageal varices. The curre...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Application Information
Patent Timeline
Login to view more IPC IPC(8): A61B5/021
Inventor 罗蒙徐庆孙隆慈杨小玉尹应青陈晓霞李学武
Owner RENJI HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap