Patent ID: 8083708
Filing Date: 2011-12-27
Classification: A61B,A61F,A61M

Abstract:
1. A system for delivering a substance to a target region within a patient's body, the system comprising: a catheter that has a distal portion which is insertable into a body lumen; at least one substance delivery element comprising a cannula having a lumen, said substance delivery element being a) advancable from the distal portion of the catheter through tissue located between the body lumen and the target region, b) useable for delivering the substance and c) retractable back into the distal portion of the catheter after the substance has been delivered leaving a passageway through tissue between the body lumen and the target region; and a leakage deterrence element selected from the group consisting of: sealant, matrix material, or filament deliverable through the lumen of the cannula while the substance delivery element is in an advanced position or as it is being retracted, to thereby implant the leakage deterrence element such that it will block leakage of the delivered substance back through the passageway and into the body lumen after the substance delivery element has been fully retracted back into the distal portion of the catheter and a reservoir device which becomes implanted within the patient's body and blocks leakage of the delivered substance back through the passageway and into the body lumen after the substance delivery element has been fully retracted back into the distal portion of the catheter.