1
Huntly D Millar: Doppler catheter. Pfizer Hospital Products Group, Arnold White & Durkee, May 19, 1987: US04665925 (115 worldwide citation)

A steerable catheter having a Doppler crystal at the tip to measure the velocity of blood in vivo--and inferentially the blood flow. The catheter includes two passageways, one passageway being exposed to the blood stream with the other passageway containing the electrical leads to the Doppler crysta ...


2
Huntly D Millar: Method of using a doppler catheter. Pfizer Hospital Products Group, Peter C Richardson, Robert F Sheyka, Thomas C Naber, September 18, 1990: US04957111 (74 worldwide citation)

A steerable catheter having a Doppler crystal at the tip to measure the velocity of blood in vivo--and inferentially the blood flow. The catheter includes two passageways, one passageway being exposed to the blood stream with the other passageway containing the electrical leads to the Doppler crysta ...


3
Huntley D Millar: Doppler catheter. Pfizer Hospital Products, Peter C Richardson, Lawrence C Akers, Robert F Sheyka, December 26, 1989: US04889128 (57 worldwide citation)

A steerable catheter having a Doppler crystal at the tip to measure the velocity of blood in vivo--and inferentially the blood flow. The catheter includes two passageways, one passageway being exposed to the blood stream with the other passsageway containing the electrical leads to the Doppler cryst ...


4

5
Markus J Osypka, Donald P Bernstein: Calibration of a doppler velocimeter for stroke volume determination. Osypka Medical, Martin & Ferraro, March 6, 2007: US07186219 (2 worldwide citation)

Doppler Velocimetry is a widely used method for estimating stroke volume (SV). The accuracy and reliability of its measurement however, is dependant on a) the correct assessment of the aortic valve cross-sectional area (CSA), and b) the maximal systolic velocity integral (SVI). The invention avoids ...


6
Nadarasa Visveshwara: System and method for measuring fluidics in arteries. Nadarasa Visveshwara, Davis Wright Tremaine, Philip H Albert, April 26, 2016: US09320493 (1 worldwide citation)

An apparatus for performing measurements in an artery includes a Doppler catheter, comprising a Doppler transducer and a wire connected to the Doppler transducer; and an elongated catheter body having a conduit therein for housing the wire of the Doppler catheter. The body has a proximal end and a d ...


7
Nadarasa Visveshwara: System and method for measuring fluidics in arteries. Nadarasa Visveshwara, Davis Wright Tremaine, Philip H Albert, November 29, 2016: US09504443

An apparatus for performing measurements in an artery includes a Doppler catheter, comprising a Doppler transducer and a wire connected to the Doppler transducer; and an elongated catheter body having a conduit therein for housing the wire of the Doppler catheter. The body has a proximal end and a d ...


8
Thomas Keast, Aaron M Weiss, Eric J Gwerder, Jeffrey Schwardt, Edmund J Roschak: Tissue sampling devices, systems and methods. Broncus Medical, Levine Bagade Han, March 6, 2018: US09907543

Methods, devices, and systems are described herein that allow for improved sampling of tissue from remote sites in the body. A tissue sampling device comprises a handle allowing single hand operation. In one variation the tissue sampling device includes a blood vessel scanning means and tissue corin ...


9
Osypka Markus J, Bernstein Donald P: Calibration of a doppler velocimeter for stroke volume determination. Osypka Medical, April 16, 2003: EP1302166-A1

Doppler Velocimetry is a widely used method for estimating stroke volume (SV). The accuracy and reliability of its measurement however, is dependant on a) the correct assessment of the aortic valve cross-sectional area (CSA), and b) the maximal systolic velocity integral (SVI). The invention avoids ...


10
Millar Huntly D: Catheter doppler, Doppler catheter. Schneider, SMART & BIGGAR, July 16, 1991: CA1286368

DOPPLER CATHETER AbstractA steerable catheter having a Doppler crystal atthe tip to measure the velocity of blood in vivo andinferentially the blood flow. The catheter includestwo passageways, one passageway being exposed to theblood stream with the other passageway containing theelectrical leads to ...