Intravascular pressure and flow sensor

Details Intravascular pressure and flow sensor Intravascular pressure and flow sensor

1995-09-13

1999-02-23

Jastrzab, Jeffrey R.

Surgery

Diagnostic testing

Cardiovascular

600561, A61B 50215

Patent

active

058738355

ABSTRACT:
An intravascular device for measuring blood pressure and flow is disclosed, which includes an elongate shaft having a pressure transducer and a flow transducer connected to its distal end. The pressure transducer may be a ferrofluid-type pressure transducer and the flow transducer may be an anemometer-type flow transducer. Measurement circuitry is also disclosed which provides a means for simultaneous measurement of both blood pressure and blood flow parameters. A sensor shield may be employed to isolate radial blood flow which is indicative of turbulent blood flow. An alternative blood flow measurement device is also disclosed which utilizes a thin metal film anemometer to measure flow in a vascular lumen.

REFERENCES:
patent: 5271408 (1993-12-01), Breyer et al.
patent: 5284138 (1994-02-01), Kujawski
patent: 5333609 (1994-08-01), Bedingham et al.
patent: 5450853 (1995-09-01), Hastings et al.
patent: 5595182 (1997-01-01), Krivitski

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