Medication administering device
First Claim
Patent Images
1. A medication administering device, comprising:
- a housing of a size enabling it to be introduced into a body cavity of a subject;
a displaceable member in the interior of the housing and defining first and second expansible-contractible chambers therein;
said first chamber including an opening and being adapted to receive medication to be delivered through said opening when said device is in the body cavity;
gas generating means for supplying a gas to said second chamber to expand it and thereby to force medication from said first chamber out through said opening into the body cavity, said gas generating means including electrically-controlled means for generating a gas when energized;
and a sensor within said housing for sensing a condition in the body cavity and for controlling said electrically-controlled means in response thereto.
2 Assignments
0 Petitions
Accused Products
Abstract
A medication administering device includes a housing introducible into a body cavity and of a material insoluble in the body cavity fluids, but formed with an opening covered by a material which is soluble in body cavity fluids. A diaphragm divides the interior of the housing into a medication chamber including the opening, and a control chamber. An electrolytic cell in the control chamber generates a gas when electrical current is passed therethrough to deliver medication from the medication chamber through the opening into the body cavity at a rate controlled by the electrical current.
482 Citations
18 Claims
-
1. A medication administering device, comprising:
-
a housing of a size enabling it to be introduced into a body cavity of a subject; a displaceable member in the interior of the housing and defining first and second expansible-contractible chambers therein; said first chamber including an opening and being adapted to receive medication to be delivered through said opening when said device is in the body cavity; gas generating means for supplying a gas to said second chamber to expand it and thereby to force medication from said first chamber out through said opening into the body cavity, said gas generating means including electrically-controlled means for generating a gas when energized; and a sensor within said housing for sensing a condition in the body cavity and for controlling said electrically-controlled means in response thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A medication administering device, comprising:
-
a housing of a size enabling it to be introduced into a body cavity of a subject; a displaceable member in the interior of the housing and defining first and second expansible-contractible chambers therein; said first chamber including an opening and being adapted to receive medication to be delivered through said opening when said device is in the body cavity; and gas generating means for supplying a gas to said second chamber to expand it and thereby to force medication from said first chamber out through said opening into the body cavity, said gas generating means including electrically-controlled means for generating a gas when energized; the outer surface of the housing including spaced, diverse metal elements which are bridged by the body cavity fluids to generate an electromotive force for supplying current to the electrically-controlled means. - View Dependent Claims (12, 13, 14)
-
-
15. A medication administering device, comprising:
-
a housing of a size enabling it to be introduced into a body cavity of a subject; a displaceable member in the interior of the housing and defining first and second expansible-contractible chambers therein; said first chamber including an opening and being adapted to receive medication to be delivered through said opening when said device is in the body cavity; and gas generating means for supplying a gas to said second chamber to expand it and thereby to force medication from said first chamber out through said opening into the body cavity, said gas generating means including electrically-controlled means for generating a gas when energized; said housing including an outer sheath of a liquid-swellable material which swells when in contact with body cavity fluids and disintegrates over a period of time in the body cavity, to thereby control the residence time of the device in the body cavity.
-
-
16. A medication administering device, comprising:
-
a first housing of a size enabling it to be introduced into a body cavity of a subject, said housing being of a material insoluble in body cavity fluids but being formed with an opening; a plug which is soluble in the body cavity fluids closing said opening; a displaceable diaphragm in the interior of the housing and defining first and second expansible-contractible chambers therein; said first chamber including said opening and being adapted to receive medication to be delivered through said opening when said device is in the body cavity; and gas generating means in said second chamber for supplying a gas to said second chamber to expand it and thereby to force medication from said first chamber out through said opening into the body cavity; said has generating means in included in a second housing which is attached to said first housing when introduced into the body cavity of a subject and which is also of a material insoluble in the body cavity fluids, the two housing being formed with aligned openings for feeding gas generated in said second housing into said second chamber of the first-mentioned housing. - View Dependent Claims (17, 18)
-
Specification