Flow monitor and vascular access system with continuously variab

Details Flow monitor and vascular access system with continuously variab Flow monitor and vascular access system with continuously variab

1992-06-19

1993-11-09

Kamm, William E.

Surgery

Truss

Pad

12866205, 12866203, 12866109, A61B 800

Patent

active

052593860

ABSTRACT:
An apparatus for use in flow monitoring and cannulation of blood vessels which includes vascular accessing capabilities. The apparatus includes a flux panel, an audio monitor, and a probe-needle assembly. The flux panel is composed of two or more sections hingedly connected wherein each section includes a transducer having a continuously varying thickness from one end to the other. Successive bands of excitation are progressively created along the length of each transducer as different frequencies are transmitted thereto. The apparatus may be operated in either monitor or access modes with both manual and automatic changes in frequencies. The apparatus is capable of transmitting high-powered ultrasonic waves of continuously variable resonant frequencies to be used along with an audio monitor for sensing flow or in conjunction with a probe-needle assembly to locate body vessels.

REFERENCES:
patent: 4097835 (1978-06-01), Green
patent: 4413629 (1983-11-01), Durley, III
patent: 4548210 (1985-10-01), Enjoji et al.
patent: 4870867 (1989-10-01), Shaulov

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