Sensing gas bubbles in a living body

a technology of gas bubbles and living bodies, applied in the field of sensing gas bubbles in living bodies, can solve the problems of gas bubble dispersion from liquid, device use has not been found, and the body cannot expel gas bubbles fast enough, so as to reduce the

Inactive Publication Date: 2012-04-19
EGOZI NOAM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables real-time detection and monitoring of gas bubbles and physiological parameters, providing accurate and immediate feedback without relying on statistical tables, enhancing safety in diving and other high-risk activities.

Problems solved by technology

Changes in ambient pressure can lead to dispersion of gas bubbles from the liquid.
However at a high rate of change the body cannot expel them fast enough and they can accumulate or grow.
While devices have been described for detection of bubbles in blood, for example in U.S. Pat. No. 6,261,233, the disclosure of which is incorporated herein by reference, which describes an ultrasound system, such devices have apparently not found actual use, especially in underwater situations.

Method used

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  • Sensing gas bubbles in a living body
  • Sensing gas bubbles in a living body
  • Sensing gas bubbles in a living body

Examples

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Embodiment Construction

General Structure

[0051]FIG. 1 is a schematic illustration of a gas bubble detection device 100, according to an exemplary embodiment of the invention. Detection device 100 transmits an original signal 170, for example a visible light beam toward a living body 220. A sensor 120 in detection device 100 detects and analyses a reflected signal 180. Sensor 120 optionally includes a narrow-bandwidth filter. In some embodiments of the invention, a transmitted signal 190, that passes through body 220 is analyzed instead or in addition. In an exemplary embodiment of the invention, the analyses compares original signal 170 and the received signal. In an exemplary embodiment of the invention, perturbations in sensed signal are analyzed to yield information about gas bubbles 210 found in a flow of blood or other body fluids and / or in non-flowing tissues.

[0052]As will be described below various types and wavelengths of waves can be used for signal 170, including, for example, RF, ultrasound and ...

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Abstract

A method of detecting gas bubbles in a living body, comprising transmitting at least one original electromagnetic signal to a body portion; detecting a signal modulated by a flow of blood in said body portion; and analyzing a perturbation in said signal to determine at least one of an existence and a property of a bubble in said blood flow.

Description

RELATED APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 10 / 526,428, filed on Feb. 28, 2005, which is a National Phase of PCT Patent Application No. PCT / IL2003 / 000707, filed on Aug. 28, 2003, which claims the benefit of priority under 35 USC 119(e) of U.S. Provisional Patent Application No. 60 / 406,332, filed on Aug. 28, 2002.[0002]The contents of all of the above applications are incorporated by reference as if fully set forth herein.FIELD OF THE INVENTION[0003]The present invention relates to sensing gas bubbles in a living body.BACKGROUND OF THE INVENTION[0004]Various gases are dissolved in the circulatory blood system of living bodies. Changes in ambient pressure can lead to dispersion of gas bubbles from the liquid. At slow pressure changes, the body can expel the bubbles. However at a high rate of change the body cannot expel them fast enough and they can accumulate or grow. Detection of gas bubbles in a living body, at an early stage of ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): A61B5/1455A61B5/145A61B5/00A61B5/024
CPCA61B5/0059A61B5/726A61B5/1455A61B5/02416
InventorEGOZI, NOAM
OwnerEGOZI NOAM