Implantable metered dose drug delivery system

Details Implantable metered dose drug delivery system Implantable metered dose drug delivery system

1982-10-05

1985-10-01

Rosenbaum, C. Fred

Surgery

Controlled release therapeutic device or system

Implanted dynamic device or system

604246, 604185, A61M 500

Patent

active

045443718

ABSTRACT:
An implantable metered dose drug delivery system is disclosed which comprises implantable components including an injection site, reservoir, metering valve and delivery catheter, all of which are interconnected through suitable tubing. The metering valve has a domed body constructed of a resilient elastomeric material with a fluid-flow passageway extending therethrough and opening into a chamber within the domed body. A valve is positioned within an outlet leading from the chamber, which valve is opened by exerting an external pressure on the domed body to first collapse and occlude the fluid-flow passageway and then open the valve to permit medication within the chamber to flow through the outlet. Upon release of the external pressure, the fluid-flow passageway opens and reduced pressure in the chamber draws additional fluid through the passageway to fill the chamber.

REFERENCES:
patent: 3827439 (1974-08-01), Schulte et al.
patent: 4013074 (1977-03-01), Siposs

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