Implantable fluid delivery device for basal and bolus delivery of medicinal fluids
AssigneeScience Incorporated
InventorsMarshall S. Kriesel, Thomas N. Thompson
Life of this patent
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Abstract
An implantable fluid delivery apparatus for infusing medicinal fluids into a patient that includes a novel basal delivery system that includes a heat responsive polymer gel material which upon being heated by heater foil uniquely functions as an internal energy source for expelling basal doses of medicinal fluids from the device. The apparatus also includes a bolus delivery system that includes a magnetically responsive polymer gel which, upon being stimulated by an electro-magnet will delivery precise bolus doses of medicinal fluids to the patient.
Claims33
An implantable device for implantation within a patient for infusing medicinal fluid into the patient comprising:
- (a) a housing having an outlet;
- (b) a first fluid reservoir containing a fluid disposed within said housing, said fluid reservoir having an inlet and an outlet in communication with said outlet of said housing;
- (c) a first mass disposed within said housing proximate said first reservoir, said first mass comprising a semi-solid, which upon being stimulated, will act upon said fluid contained within said first reservoir to cause said fluid to flow outwardly of said outlet of said first reservoir;
- (d) first stimulation means for stimulating said first mass, said first stimulation means being operably associated with said first mass;
- (e) infusion means in communication with outlet of said housing for delivering fluid from said fluid reservoir to the patient;
- and
- (f) bolus delivery means in communication with said infusion means for delivering a bolus dose of medicinal fluid to said patient.
An implantable device for implantation within a patient for infusing medicinal fluid into the patient comprising:
- (a) a housing having an outlet;
- (b) a first fluid reservoir containing a fluid disposed within said housing, said first fluid reservoir having an inlet and an outlet in communication with said outlet of said housing;
- (c) a first mass disposed within said housing proximate said first reservoir, said first mass comprising a semi-solid, which upon being stimulated, will act upon said fluid contained within said first reservoir to cause said fluid to flow outwardly of said outlet of said first reservoir;
- (d) first stimulation means operably associated with said first mass for stimulating said first mass;
- (e) a second reservoir containing fluid disposed within said housing, said second reservoir having an inlet and an outlet in communication with said outlet of said housing;
- (f) a second mass disposed within said housing proximate said second reservoir, which upon being stimulated, will act upon said fluid contained within said second reservoir to cause said fluid to flow outwardly of said outlet of said second reservoir;
- and
- (g) second stimulation means operably associated with said second mass for stimulating said second mass.
An implantable device for implantation within a patient for infusing medicinal fluid into the patient comprising:
- (a) a housing having an outlet;
- (b) a first fluid reservoir containing a fluid disposed within said housing and containing a fluid, said fluid reservoir comprising an expandable structure having an inlet and an outlet in communication with said outlet of said housing;
- (c) a first mass disposed within said housing proximate said first reservoir, said first mass comprising a polymer gel, which upon being stimulated, will act upon said fluid contained within said first reservoir to cause said fluid to flow outwardly of said outlet of said first reservoir;
- (d) first stimulation means for stimulating said first mass, said first stimulation means being operably associated with said first mass;
- (e) infusion means in communication with outlet of said housing for delivering fluid from said fluid reservoir to the patient;
- (f) bolus delivery means in communication with said infusion means for delivering a bolus dose of medicinal fluid to said patient;
- and
- (g) linear displacement measuring means disposed within said housing for determining the volume of fluid within said first fluid reservoir.
Dependencies are inferred from the claim text.