Device for measuring the impedance to flow of a natural or prost

Details Device for measuring the impedance to flow of a natural or prost Device for measuring the impedance to flow of a natural or prost

1988-11-22

1991-05-14

Howell, Kyle L.

Surgery

Truss

Pad

128691, 128713, 604 67, A61B 502

Patent

active

050147153

ABSTRACT:
A highly automated device to measure the impedance to fluid flow of a vessel by means of direct injection at normal physiologic pressures. The device produces objective impedance data including dynamic impedance, capacitance, and Direct Current resistance, without operator induced error. The device can be used for intraoperative impedance measurements by directly cannulating the vessel under study. Non-operative impedance measurement is performed by means of percutaneous catheters. The device can also inject imaging materials or a lytic solution into the vessel while also measuring vessel impedance.

REFERENCES:
patent: 3847138 (1974-11-01), Gollub
patent: 3871361 (1975-03-01), Kamen
patent: 4080966 (1978-03-01), McNally et al.
patent: 4392849 (1983-07-01), Petre et al.
patent: 4718891 (1988-01-01), Lipps
patent: 4798211 (1989-01-01), Goor et al.

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