Vascular testing system

US7166076B2 · kind B2 · utility

Assignee

• BIOMEDIX · US

Inventors

• Marius O. Poliac · Windom, US
• Gary Warner Blanch · Burnsville, US
• Victor Florin Glava · Little Canada, US
• Daniel James Ince · Lakeville, US
• Andrew Paul Karels · Savage, US
• William Lee Rogers · Oakdale, US
• John A. Romans · North Oaks, US
• Michael Jerome Siers · Duluth, US
• Charles Fredrec Steaderman · Burnsville, US
• Ricky Lee Grave · Kenosha, US

Key dates

• Filing date: Sep 7, 2004
• Grant date: Jan 23, 2007
• Expiry date: Sep 7, 2024

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/0235
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A vascular testing system includes a pressure applicator, a pressure source for generating fluid pressure at the pressure applicator; a variable orifice valve, and a valve control. The variable orifice valve is in fluid communication with the pressure applicator, and has an orifice size capable of dynamically changing. The valve control controls the variable orifice valve as a function of sensed pressure to produce substantially linear changes in pressure at the pressure applicator. Further, a method of vascular pressure measurement according to the present invention includes providing an applied pressure higher than a patient's systolic blood pressure at a vascular location, substantially linearly decreasing the applied pressure at the vascular location, and dynamically detecting vascular pressure oscillations at the vascular location as the applied pressure is decreased.