Howmedica Corp.

Sutures, Inc.

Spencer J Silverstein

Robert J Kurtz

Francis McLeod

A method of determining the volume flow of a fluid through a conduit usable with a single crystal, whereby at least one of the fluid and the conduit have energy-scattering interfaces. The method in one embodiment includes transmitting a known, uniform sound field through the fluid which illuminates the entire cross-sectional area of the conduit, obtaining the Doppler signal from the received signal such that the sampling region is normal to the direction of propagation of the sound field; and obtaining the integral of the power over this surface. A known volume of fluid totally within the conduit is then sampled for the reference power return therefrom and this reference power return is divided into the first moment of the power to produce a signal proportional to the volume flow of the fluid through the conduit.

Doppler method of measuring flow

A catheter probe flow meter and method of determining the volume flow of a fluid through a conduit, at least one of the fluid and the conduit having energy-scattering interfaces. The method in one embodiment includes trasmitting at least two and receiving at least one or transmitting at least one and receiving at least two sound beams through the fluid, resolving the Doppler vectors into an average velocity vector for each transmitting/receiving combination, and resolving the resolved velocity vectors into their component parts.

Doppler flow meter

An intracorporeal, extracorporeal, cardiac assist, perfusion device or other pulsatile blood pumping system for circulating blood within living tissue under automatic control. Plural physiologic parameters of the tissue are monitored and utilized to control plural operating parameters of the pump during succeeding cycles of its operation so as to restore the monitored physiologic parameters to desired predetermined (but adjustable) values.

Pulsatile blood pumping apparatus and method

A catheter probe flow meter and method of determining the volume flow of a fluid through a conduit, at least one of the fluid and the conduit having energy-scattering interfaces. The method in one embodiment includes transmitting at least two and receiving at least one or transmitting at least one and receiving at least two sound beams through the fluid, resolving the Doppler vectors into an average velocity vector for each transmitting/receiving combination, and resolving the resolved velocity vectors into their component parts.

Growing community of inventors

Ithaca, NY, United States of America

Spencer J Silverstein