Implantable system with drug-eluting cells for on-demand local drug delivery
AssigneeMedtronic, Inc.
InventorsOrhan Soykan, Maura G. Donovan
Life of this patent
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Abstract
An implantable system that includes a carrier and eukaryotic cells, which produce and release a therapeutic agent, and a stimulating element for stimulating the release of the therapeutic agent. The system can also include a sensing element for monitoring a physiological condition and triggering the stimulating element to stimulate the delivery device to release the therapeutic agent. Alternatively, the patient in which the system is implanted can activate the stimulating element to release the therapeutic agent.
Claims12
An implantable system comprising:
- (a) a delivery device comprising:
- (i) an intraluminal stent comprising:
- (A) a lumen-wall contacting surface;
- (B) a lumen-exposed surface;
- (C) a first polymer composition covering at least a portion of the stent;
- and
- (ii) endothelial cells associated with the first polymer composition;
- wherein the endothelial cells produce at least one therapeutic agent;
- (b) an electrical stimulating element operatively coupled to the delivery device for stimulating the release of the therapeutic agent from the delivery device;
- and
- (c) a sensing element for monitoring at least one physiological property of a patient in which the system is implanted and communicating with the electrical stimulating element to stimulate the release of the therapeutic agent from the delivery device.
A method of local delivery of a therapeutic agent comprising:
- (a) providing an implantable system comprising:
- (i) a delivery device comprising:
- (A) an intraluminal stent comprising:
- (I) a lumen-wall contacting surface;
- (II) a lumen-exposed surface;
- (III) a first polymer composition covering at least a portion of the stent;
- and
- (B) endothelial cells associated with the first polymer composition;
- wherein the endothelial cells produce at least one therapeutic agent;
- (ii) an electrical stimulating element operatively coupled to the delivery device for electrically stimulating the release of the therapeutic agent from the delivery device;
- and
- (iii) a sensing element for monitoring at least one physiological property of a patient in which the system is implanted and communicating with the stimulating element to stimulate the release of the therapeutic agent from the delivery device;
- and
- (b) implanting the implantable system into the body of a patient;
- wherein the therapeutic agent is released from the delivery device when the sensing element detects a predetermined level of a physiological property and communicates with the electrical stimulating element to trigger the release of the therapeutic agent.
A method of making an implantable system for local delivery of a therapeutic agent, the method comprising:
- (a) providing a delivery device comprising a carrier and eukaryotic cells that produce at least one therapeutic agent;
- (b) providing a stimulating element operatively coupled to the delivery device for stimulating the release of the therapeutic agent from the delivery device;
- (c) providing a sensing element for monitoring at least one physiological property of a patient in which the system is implanted;
- and
- (d) connecting the stimulating element and sensing element such that they communicate with each other to stimulate the release of the therapeutic agent from the delivery device when implanted in the body of a patient and the sensing element detects a predetermined level of a physiological property.
Dependencies are inferred from the claim text.