Miniature pump for drug delivery
First Claim
Patent Images
1. An infusion device for use in delivering drugs, the infusion device comprising:
- a) a housing having a chamber, the housing having an outlet;
b) a diaphragm operatively connected to the housing, the diaphragm dividing the chamber into a drug storage subchamber and a propellant subchamber the diaphragm configured to go over center for greater volume efficiencies;
c) the propellant subchamber adapted and configured to receive a suitable propellant; and
d) the drug storage subchamber adapted and configured to receive a suitable drug, the drug storage subchamber having an outlet in fluid communication with the outlet of the housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A miniature drug delivery pump utilizes a shape memory Ni-Ti alloy. A flow restrictor is provided and the pump is refillable.
55 Citations
30 Claims
-
1. An infusion device for use in delivering drugs, the infusion device comprising:
-
a) a housing having a chamber, the housing having an outlet;
b) a diaphragm operatively connected to the housing, the diaphragm dividing the chamber into a drug storage subchamber and a propellant subchamber the diaphragm configured to go over center for greater volume efficiencies;
c) the propellant subchamber adapted and configured to receive a suitable propellant; and
d) the drug storage subchamber adapted and configured to receive a suitable drug, the drug storage subchamber having an outlet in fluid communication with the outlet of the housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An infusion device for use in delivering drugs, the device comprising:
-
a) a housing having a chamber, the housing having an outlet;
b) a diaphragm operatively connected to the housing, the diaphragm dividing the chamber into a drug storage subchamber and a propellant subchamber, the diaphragm constructed from a shape memory alloy material;
c) the propellant subchamber adapted and configured to receive a suitable propellant; and
d) the drug storage subchamber adapted and configured to receive a suitable drug, the drug storage subchamber having an outlet in fluid communication with the outlet of the housing. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. An infusion device for use in delivering drugs, the device comprising:
-
a) a housing having a chamber, the housing having an outlet;
b) a diaphragm operatively connected to the housing, the diaphragm dividing the chamber into a drug storage subchamber and a propellant subchamber, the diaphragm constructed from a shape memory alloy;
c) the propellant subchamber adapted and configured to receive a suitable propellant;
d) the drug storage subchamber adapted and configured to receive a suitable drug, the drug storage subchamber having an outlet in fluid communication with the outlet of the housing; and
e) a flow restrictor having a first end in fluid communication with the outlet of the drug storage subchamber and a second end in fluid communication with the housing outlet, the flow regulator being a micro-machined flow restrictor, the flow restrictor comprising;
i) a first glass member having a planar top surface;
ii) a second glass member having a planar bottom surface, the bottom surface of the second glass member positioned on the top surface of the first glass member to form a chip assembly;
iii) one of the top surface and bottom surface having a channel machined thereon; and
iv) the chip assembly having an inlet in fluid communication with the drug storage subchamber outlet and an outlet in fluid communication with the housing outlet. - View Dependent Claims (29, 30)
-
Specification