Implantable infusion pump

Details Implantable infusion pump Implantable infusion pump

1995-09-18

1998-11-17

Mendez, Manuel

Surgery

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

Treating material introduced into or removed from body...

604140, A61M 3700

Patent

active

058369155

ABSTRACT:
The invention concerns an implantable infusion pump for dosed emission of medicines into the human body comprising a pump chamber formed by an upper chamber portion (3) and a lower chamber portion (2), whereby said pump chamber is divided by a flexible membrane (6) into a pressure chamber (8) and a medicine reservoir (7). Refill apertures (12, 14) covered by septa (13, 15) are further provided. The septa (13, 15) are hermetically clamped by holders (4, 5). According to the invention, catch connections are used as main connections (31, 32, 33) and as ancillary connections (34, 35) for the connection of the pump components (2, 3, 4, 5), whereby the main connections (31, 32, 33) substantially support the interior pressure strain generated under normal operating load and the locked ancillary connections (34, 35) are hereby not or only nimimally brought into operation due to respective arrangement and dimensioning of the catch members. The ancillary connections (34, 35) are only activated in the case of a further pressure increase due to overload or failure of the main connections (31, 32, 33).

REFERENCES:
patent: 4969873 (1990-11-01), Steinbach et al.
patent: 5102389 (1992-04-01), Hauser
patent: 5167633 (1992-12-01), Mann et al.
patent: 5281111 (1994-01-01), Plambeck et al.
patent: 5306257 (1994-04-01), Zdeb
patent: 5578005 (1996-11-01), Sancoff et al.

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