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Detection of blood-vessel wall artifacts

A blood vessel wall and blood vessel technology, applied in the field of detection of blood vessel wall artifacts

Active Publication Date: 2013-08-07
EDWARDS LIFESCIENCES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, there is no known device for assisting clinicians in proper intravascular catheter placement to obtain the clearest and highest quality signal

Method used

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  • Detection of blood-vessel wall artifacts
  • Detection of blood-vessel wall artifacts
  • Detection of blood-vessel wall artifacts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] figure 1 Apparatus for detecting vessel wall artifacts due to a catheter adjacent to the vessel wall is shown. The light source 110 is connected to a catheter 112 inserted into a blood vessel 114 . Light source 110 may be any of various types, such as LEDs, and typically generates light having a wavelength in the range of about 400 nm to about 800 nm. Other light sources may be used. In general, the light source is turned on continuously for discrete time periods and produces multiple wavelengths that propagate into the blood 115 . Catheter 112 may also be of any of various types, such as a central venous catheter or a pulmonary artery catheter, and may include two parallel optical fibers 116 , 118 . The first optical fiber 116 is a transmission fiber designed to receive light from a light source and project the light into the bloodstream to illuminate the blood. The second optical fiber 118 is a receiving fiber capable of receiving light from blood and delivering t...

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PUM

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Abstract

The present application relates to detecting catheter proximity to a blood-vessel wall and blood-vessel wall artifacts associated therewith. In one embodiment, a light source, in a catheter, can be used to project light into the blood vessel. An intensity associated with at least one light wavelength that interacted with blood can be measured. Based on the measured intensity, a determination can be made regarding blood-vessel wall artifacts due to the catheter tip proximity to the blood-vessel wall. Feedback can be provided to the clinician in order to assist the clinician in adjusting the catheter to optimize signal quality and minimize artifacts due to the blood-vessel wall.

Description

technical field [0001] The present application relates to the detection of catheters adjacent to vessel walls and / or associated vessel wall artifacts. Background technique [0002] The field of critical care medicine has changed significantly in the last 25 years. Specialized devices for patient care, technological advances, and a better understanding of physiology by health care practitioners have reduced morbidity and mortality. One of the earliest technological advances that helped drive this progress was the development of catheters. In the early 1970s, the addition of thermistors to catheters allowed rapid assessment of cardiac output. At the same time, more sophisticated monitoring systems are also being developed. Thus, a more complete hemodynamic assessment can be performed relatively easily at the patient's bedside. [0003] With advanced technology comes the need for advanced clinicians. For hemodynamic monitoring, clinician placement of catheters is important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1459A61B5/027
CPCA61M25/01A61B5/742A61B5/1459A61B5/065A61B5/027A61B5/7221A61B5/0084A61B5/7203A61B5/6852A61B5/7405A61B5/6886
Inventor 蹇忠平C·杨F·哈迪布
Owner EDWARDS LIFESCIENCES CORP