Solid state fluid delivery system

Details Solid state fluid delivery system Solid state fluid delivery system

1995-11-08

1998-11-24

Buiz, Michael

Surgery

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

Treating material introduced into or removed from body...

A61M 530

Patent

active

058400621

ABSTRACT:
An apparatus and method are disclosed that utilize piezoelectric materials as part of a delivery system capable of the rapidly repetitive dispensing of a fluid to an intended target site. In a particular embodiment, the appartus contemplates a solid state needleless injection system which comprises a first housing structure having a dispensing chamber of variable volume capacity and at least one nozzle element for fluid discharge, and a fluid reservoir operatively connected to the first housing structure, and a second housing structure containing at least one piezoelectric actuator. A valve means is disposed between the fluid reservoir and the dispensing chamber to control the flow of said fluid therebetween. The fluid which may be a medication, is forced out of the dispensing chamber through an injection port upon actuation of the piezoelectric actuator. The piezoelectric actuator interacts with the dispensing chamber in such a manner that the overall capacity of the dispensing chamber may be altered by altering the degree of actuation of the piezoelectric actuator.

REFERENCES:
patent: 4787888 (1988-11-01), Fox
patent: 4944659 (1990-07-01), Labbe et al.
patent: 5007438 (1991-04-01), Tachibana et al.
patent: 5094594 (1992-03-01), Brennan
patent: 5415629 (1995-05-01), Henley
patent: 5474527 (1995-12-01), Bettinger

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