EP0209677A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electrochemically-driven pulsatile drug dispenser
Assignee: Ivac Medical Systems Inc
•
Filing: 1986-05-27
•
Granted: —
•
Expires: 2006-05-27
Abstract
Abstract An improved drug dispenser forthe pulsatile or peristaltic delivery of drugs includes a fluid reservoir (12) for storing the drug to be dispensed, an electrochemical pump (18, 20) for pumping the drug from the fluid reservoir (12), and a pump valve (34) responsive to the pump pressure such that when the pump pressure reaches some predetermined value, the pump valve (34) releases the pressure exerted upon the drug. The result is a low cost, low weight and efficient drug dispenser for the pulsatile delivery of drugs.
Inventors
- 👤 Henri J.R. Maget
- 👤 Paul Krejci
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 17:36
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/14244; A61M5/14276; A61M2005/14204
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
42 words
An electrochemically-driven pulsatile drug dispenser, comprising: an electrochemical pump for pumping a fluid; and a pump valve responsive to the pump pressure, wherein the pump valve releases the pump pressure exerted upon the fluid when the pump pressure reaches a predetermined value.
Claim 2
Dependent Claim
42 words
An electrochemically-driven pulsatile drug dispenser, comprising: an electrochemical pump for pumping a fluid; and a pump valve responsive to the pump pressure, wherein the pump valve releases the pump pressure exerted upon the fluid when the pump pressure reaches a predetermined value.
Claim 3
Dependent Claim
51 words
The electrochemically-driven pulsatile drug dispenser as defined in claim 1,- wherein the pump valve includes: a pump valve seat; and a pump valve diaphragm having a perforation, wherein the pump valve diaphragm moves upward from the pump valve seat at the predetermined value and releases the pump pressure through the perforation.
Claim 4
Dependent Claim
35 words
The electrochemically-driven pulsatile drug dispenser as defined in claim 1, wherein the electrochemical pump includes: an electrochemical cell for pressurizing a gas; and a pump chamber responsive to the pressurized gas for pumping the fluid.
Claim 5
Dependent Claim
31 words
The electrochemically-driven pulsatile drug dispenser as defined in claim 3, wherein the electrochemical cell includes: an electrolytic membrane; and a pair of electrodes disposed on either side of the electrolytic membrane.
Claim 6
Dependent Claim
37 words
The slectrochemically-driven pulsatile drug dispenser as defined in claim 3, wherein the pump chamber includes: an inlet port; an outlet port; and a flexible diaphragm for exerting the gas pressure on the fluid in the pump chamber.
Claim 7
Dependent Claim
20 words
The electrochemically-driven pulsatile drug dispenser as defined in claim 1, and further comprising: a fluid reservoir for storing the fluid.
Claim 8
Dependent Claim
54 words
A pulsatile drug dispenser, comprising: means for pressurizing a fluid; means for pumping a drug with the pressurized fluid; means responsive to the pressurized fluid, wherein the means responsive to the pressurized fluid releases the fluid when the fluid pressure reaches a predetermined value, thereby pumping the drug in a pulsatile or peristaltic motion.
Claim 9
Dependent Claim
54 words
A pulsatile drug dispenser, comprising: means for pressurizing a fluid; means for pumping a drug with the pressurized fluid; means responsive to the pressurized fluid, wherein the means responsive to the pressurized fluid releases the fluid when the fluid pressure reaches a predetermined value, thereby pumping the drug in a pulsatile or peristaltic motion.
Claim 10
Dependent Claim
53 words
The pulsatile drug dispenser as defined in claim 7, wherein the means responsive to the pressurized fluid includes: a pump valve seat; and a pump valve diaphragm having a perforation, wherein the pump valve diaphragm moves upward from the pump valve seat at the predetermined value and releases the fluid through the perforation.
Claim 11
Dependent Claim
41 words
The pulsatile drug dispenser as defined in claim 7, wherein the means for pressurizing a fluid includes: an electrochemical celt for pressurizing the fluid; and a pump chamber responsive to the pressurized fluid for pumping the drug with the pressurized fluid.
Claim 12
Dependent Claim
30 words
The pulsatile drug diaphragm as defined in claim 9, wherein the electrochemical cell includes: an electrolytic membrane; and a pair of electrodes disposed on either side of the electrolytic membrane.
Claim 13
Dependent Claim
36 words
The pulsatile drug dispenser as defined in claim 9, wherein the pump chamber includes: a inlet port; an outlet port; and a flexible diaphragm for exerting the fluid pressure on the drug in the pump chamber.
Claim 14
Dependent Claim
18 words
The pulsatile drug dispenser as defined in a claim 7, and further comprising: means for storing the drug.
References Cited (Backward Citations)
US3199511A
Cited
US3894538A
Cited
GB2029506A
Cited
US4332246A
Cited
US4345594A
Cited
US4430078A
Cited
US4447224A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.