Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1993-03-26
1998-06-23
Buiz, Michael
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604131, 604141, 604 91, A61M 3700
Patent
active
057698244
ABSTRACT:
An apparatus for controlled delivery of a liquid consists of a delivery unit which comprises a liquid container (3) having at least one movable wall (12) and a liquid outlet which is provided with a flow restriction, and a power unit which comprises a second container (21) which also has at least one movable wall (29) and wherein a vacuum may be established, and a mechanical coupling (31) between the movable wall (12) of the liquid container(3) and the movable wall (29) of the second container (21). The delivery unit and the power unit are connected together coaxially when the apparatus is prepared for delivery, and in this connecting together, the movable wall (29) of the second container is displaced by means of the mechanical coupling (31) such that the vacuum is established. The ambient atmospheric pressure then acts against this vacuum, and this pressure is transmitted by the mechanical coupling (31), which is directly acting on the movable wall (12) of the liquid container (3) such that the liquid is forced out through the outlet (4) and the restriction therein.
REFERENCES:
patent: 3881484 (1975-05-01), Gidcumb, Jr.
patent: 4744786 (1988-05-01), Hooven
patent: 4822340 (1989-04-01), Kamstra
patent: 4874381 (1989-10-01), Vetter
patent: 5135500 (1992-08-01), Zdeb
Hjertman Birger
Michel Peter
Buiz Michael
Pharmacia & Upjohn Aktiebolag
Sadula Jennifer R.
LandOfFree
Apparatus for controlled delivery of liquids does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for controlled delivery of liquids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlled delivery of liquids will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1390175