Infusion device intended for implantation in a living body

Details Infusion device intended for implantation in a living body Infusion device intended for implantation in a living body

1982-09-15

1985-04-16

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604153, 604891, 128DIG12, A61M 514

Patent

active

045113556

ABSTRACT:
The exemplary embodiments relate to a device housing implantable in the body and having a reservoir for the infusion of fluid and having a conveying and dosing unit for conveying the fluid from the reservoir to the discharge opening of a discharge catheter. In known devices of this type, the reservoir is held at a reference pressure which is lower in comparison to the pressure at the fluid discharge location in order, in case of a defect, to prevent fluid from flowing out. According to the present disclosure, pressure equalization between the inside space of the housing and the environment is effected for example by a hydrophobic or hydrophilic diaphragm with pores of a specific size or a diffusion diaphragm in combination with a pressure control valve in the wall of the device housing.

REFERENCES:
patent: 3647117 (1972-03-01), Hargest
patent: 3765414 (1973-10-01), Arlen
patent: 4013074 (1977-03-01), Siposs
patent: 4041944 (1977-08-01), Rhodes
patent: 4191181 (1980-03-01), Franetzki et al.
patent: 4217894 (1980-08-01), Franetzki
patent: 4398908 (1983-08-01), Siposs

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