Method and apparatus for treatment of focal disease in hollow tubular organs and other tissue lumens
First Claim
1. A method for providing localized therapy with a therapeutic agent to a diseased region in a tissue lumen, comprising:
- (a) introducing a catheter into the tissue lumen, said catheter comprising first and second expansile members and said catheter being positioned such that said first and second expansile members are disposed on opposite sides of the diseased region;
(b) expanding the expansile members to occlude the diseased region of the tissue lumen;
(c) introducing a therapeutic agent to the occluded diseased region via the catheter;
applying a conforming polymer coating to a surface of the tissue lumen via the catheter;
allowing the catheter to remain in place for a therapeutically effective period of time;
contracting the expansile members; and
removing the catheter.
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Abstract
The present invention provides a technique for treating diseased portions of tissue lumens by the focal introduction of at least one therapeutic agent at the diseased region. A catheter is positioned in a lumen such that first and second expansile members surround the diseased portion of tissue. The expansile members are expanded to occlude the diseased region and a therapeutic agent is introduced to the occluded diseased region via the catheter. The catheter is allowed to remain in place for a therapeutically effective period of time to allow the therapeutic agent to contact the diseased portion for such a period of time. The catheter arrangement also can be used to occlude a diseased region, remove physiological fluid from the occluded region and subsequently to disrupt the diseased region and/or apply the therapeutic agent. The therapeutic agent can be selected to suppress cell proliferation in the diseased region, and the occluded region can be treated with a medicament to promote vessel healing. The occluded region also can be paved with polymeric material. Finally, the expansile members are contracted and the catheter is removed.
150 Citations
20 Claims
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1. A method for providing localized therapy with a therapeutic agent to a diseased region in a tissue lumen, comprising:
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(a) introducing a catheter into the tissue lumen, said catheter comprising first and second expansile members and said catheter being positioned such that said first and second expansile members are disposed on opposite sides of the diseased region;
(b) expanding the expansile members to occlude the diseased region of the tissue lumen;
(c) introducing a therapeutic agent to the occluded diseased region via the catheter;
applying a conforming polymer coating to a surface of the tissue lumen via the catheter;
allowing the catheter to remain in place for a therapeutically effective period of time;
contracting the expansile members; and
removing the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for providing localized therapy with a therapeutic agent to a diseased region in a tissue lumen, comprising:
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introducing an elongate tubular shaft into the tissue lumen, the shaft having a distal region adapted for inserting into a patient and a proximal region adapted to remain outside of the patient;
applying a conforming polymer coating to the diseased region; and
adding a therapeutic agent to the diseased region via the shaft for a therapeutically effective period of time, wherein the therapeutic agent is selected to influence the behavior of cells and is selected from the group consisting of anti-thrombotic agents, thrombolytic agents, vasodilating agents, calcium channel blocking drugs, anti-proliferative agents, intercalating agents, gross modulating factors and anti-inflammatory agents. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification