Implantable drug infusion system with safe bolus capability

Details Implantable drug infusion system with safe bolus capability Implantable drug infusion system with safe bolus capability

1995-04-05

1996-11-19

Green, Randall L.

Surgery

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

Treating material introduced into or removed from body...

604131, 604132, 604 86, A61M 1100

Patent

active

055757707

ABSTRACT:
An implantable infusion device includes a housing having opposite first and second walls and a relatively large blind passage extending into the housing from the first wall toward the second wall. A first self-sealing septum blocks the passage at the first wall and a second self-sealing septum blocks the passage at a location therein spaced from the first septum thereby defining an infusate chamber between the first and second septa and a blind chamber between the second septum and the housing second wall. A fluid pathway containing a normally closed valve extends from the infusate chamber to the exterior of the housing and a lever connected to the valve is located in the blind chamber. That lever may be depressed to open the valve only by a needle inserted through the two septa into the blind chamber which needle has a side opening aligned with the infusate chamber when such depression occurs.

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patent: 5395324 (1995-03-01), Hinrichs et al.
patent: 5445616 (1995-08-01), Kratoska et al.

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