Pressure controller

Details Pressure controller Pressure controller

1987-11-13

1989-06-13

Ostrager, Allen M.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604118, A61M 2900

Patent

active

048388645

ABSTRACT:
A pressure controller device for selectively applying and relieving a measured pressure upon a closed volume of fluid includes a housing, a barrel defining a fluid chamber and a plunger for axial movement within the fluid chamber for applying measured pressure to a fluid therewithin. The barrel has a port for delivery of fluid at measured pressure, and moves axially within the housing in a first axial direction in response to increased pressure within the chamber. The housing and barrel are biased apart, e.g., by a first biasing spring acting with a known force upon the barrel in an opposed, second axial direction. Indicia upon the barrel and housing indicate the relative positions of barrel and housing. As pressure in the fluid chamber increases, the barrel is urged in a first direction with a force proportional to the measured pressure to overcome the known force in the second direction, the relative positions of barrel and housing providing a measure of the pressure within the fluid chamber. An inflating and deflating assembly for balloon dilation, consisting, in combination, of the pressure controller device and a balloon catheter, is also described.

REFERENCES:
patent: 4064879 (1977-12-01), Leibinsohn
patent: 4403988 (1983-09-01), Binard et al.
patent: 4481008 (1984-11-01), Kurtz
patent: 4492317 (1985-01-01), Guess et al.
patent: 4612010 (1986-09-01), Hamacher et al.
patent: 4632669 (1986-12-01), Phipps, Sr. et al.
patent: 4723938 (1988-02-01), Goodin et al.

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