Implantable device

Details Implantable device Implantable device

1998-04-23

1999-11-30

Stright, Ronald

Surgery

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

Treating material introduced into or removed from body...

604131, 6048911, A61M 1100, A61M 3700, A61K 922

Patent

active

059934140

ABSTRACT:
The present invention provides an implantable drug infusion device which features a reliable and leak proof weld joint. The implantable drug infusion device features a hermetic enclosure; a drug reservoir positioned within the hermetic enclosure, a drug handling component, the drug handling component joined with a top surface of a docking station, the drug reservoir joined with a bottom surface of the docking station by a welded joint. The drug handling component typically being a MEMS-type device and fashioned from a silicon-glass or silicon--silicon sandwich. The docking station functions to isolate the thermal stresses created during the formation of the welded joint from the other joints and particularly from the joint between top surface of the docking station and the drug handling component. The thermal isolation function of the docking station is provided through one or more grooves within the docking station, the grooves functioning to separate, in a thermal manner, the top and bottom surfaces of the docking station.

REFERENCES:
patent: 4966646 (1990-10-01), Zdeblick
patent: 4978338 (1990-12-01), Melsky et al.
patent: 5224843 (1993-07-01), van Lintel
patent: 5323051 (1994-06-01), Adams et al.
patent: 5495978 (1996-03-01), Muth
"Review Packaging of Microfabricated Devices and Systems"--Wen H. Ko (Elsevier--Materials Chemistry and Physics 42 (1995) p. 169-175).

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