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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 block

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.

대표청구항 ▼

An implantable infusion device comprising a housing having a wall; a first infusate chamber in the housing; a first inlet port in said wall, said first inlet port communicating with said first chamber; a first self-sealing septum closing said first inlet port at said wall; an outlet catheter extendi

An implantable infusion device comprising a housing having a wall; a first infusate chamber in the housing; a first inlet port in said wall, said first inlet port communicating with said first chamber; a first self-sealing septum closing said first inlet port at said wall; an outlet catheter extending from said housing; a first fluid pathway extending from said first chamber to said outlet catheter; a second inlet port in said wall, said second inlet port extending into the interior of said housing; a second self-sealing septum closing said second inlet port at said wall; a third self-sealing septum positioned in the second inlet port and spaced from said second septum therein so as to define between said second and third septa a second infusate chamber in the housing; a second fluid pathway extending from the second chamber to said outlet catheter; a valve in said second fluid pathway, said valve being movable between open and closed positions to open and close the second fluid pathway; means for biasing the valve to its closed position, and valve actuating means located in the second inlet port on the opposite side of the third septum from the second chamber, said actuating means being adapted to open said valve only when contacted by a needle that penetrates through both the second and third septa.