Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1996-03-15
1999-04-27
Coggins, Wynn Wood
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 65, 604 66, A61M 3100
Patent
active
058975250
ABSTRACT:
Process for introducing a fluid into a cavity or a blood vessel of a human or animal body, particularly for gas insufflation in preparation for or during a minimally invasive surgical procedure or investigation of the body cavity or blood vessel, the fluid being conveyed from a pressurised gas store (11,12) through a fluid supply line (4) and an introduction instrument (T) of a fluid introduction system (1) into the body cavity or blood vessel and the internal pressure produced in the body cavity or blood vessel being determined from the insufflation pressure measured at a measuring point in the fluid introduction system and a correction magnitude reflecting the drop in pressure between the measuring point and the body cavity or blood vessel, wherein the internal pressure is determined substantially without interrupting the introduction of fluid from substantially continuously detected measurements of the insufflation pressure and the fluid volume introduced per unit of time (fluid flow), the gas flow yielding the correction magnitude on the basis of a predetermined non-linear characteristic which reflects the functional correlation between the fluid flow and the fall in pressure in the fluid introduction system.
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patent: 5439441 (1995-08-01), Grimsley et al.
patent: 5549546 (1996-08-01), Schneider et al.
Dey Uwe
Hartwig Peter
Muller Bernd
Thiel Torsten
Coggins Wynn Wood
Dey, Uwe and Mueller, Bernd
Gring N. Kent
Spencer George H.
Voorhees Catherine M.
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