Method and apparatus for intravascular drug delivery
First Claim
Patent Images
1. A method applying a drug to a localized area on the inner wall of a tubular body vessel comprising the steps of:
- providing expandable, porous outer membrane;
inserting membrane into the vessel adjacent the localized area;
expanding the membrane into contact with the localized area of the vessel; and
after the step of expansion causing a drug-containing liquid to flow under pressure through pores in the expanded membrane into contact with the localized area of the vessel;
wherein the step of expanding the membrane occurs independently of the step of causing the drug-containing liquid to flow through the membrane.
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Accused Products
Abstract
A drug delivery catheter assembly, including an expandable, porous outer membrane that is insertable into a blood vessel and positioned adjacent a stenotic atherosclerotic lesion on the interior wall of the blood vessel. The membrane is expanded into contact with the lesion, either mechanically or hydraulically. After the membrane is expanded, a drug-containing liquid is caused to flow into the membrane and through the pores in the membrane into contact with the lesion.
510 Citations
35 Claims
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1. A method applying a drug to a localized area on the inner wall of a tubular body vessel comprising the steps of:
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providing expandable, porous outer membrane; inserting membrane into the vessel adjacent the localized area; expanding the membrane into contact with the localized area of the vessel; and after the step of expansion causing a drug-containing liquid to flow under pressure through pores in the expanded membrane into contact with the localized area of the vessel; wherein the step of expanding the membrane occurs independently of the step of causing the drug-containing liquid to flow through the membrane. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of applying a drug to a localized area on the inner wall of a tubular body vessel comprising the steps of:
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providing an expandable, porous outer membrane; inserting the membrane into the vessel adjacent the localized area; expanding the membrane into contact with the localized area of the vessel; and causing a drug-containing liquid to flow under pressure into the membrane and through the pores in the membrane into contact with the localized area of the vessel; the step of expanding the membrane occurring independently of the flow of pressurized drug-containing liquid into the membrane and through the pores in the membrane. - View Dependent Claims (8)
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9. A method of treating a stenotic atherosclerotic lesion on the interior wall of a blood vessel comprising the steps of:
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providing an expandable, porous outer membrane; inserting the membrane into the blood vessel adjacent the lesion; expanding the membrane into contact with the lesion; and after the step of expansion, causing a drug-containing liquid to flow under pressure through pores in the expanded membrane into contact with the lesion; wherein the step of expanding the membrane occurs independently of the flow of the drug-containing liquid through the membrane. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of treating a stenotic atherosclerotic lesion on the interior wall of a blood vessel comprising the steps of:
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providing an expandable, porous outer membrane; inserting the membrane into the blood vessel adjacent the lesion; expanding the membrane into contact with the lesion; and causing a drug-containing liquid to flow under pressure into the membrane and through pores in the membrane into contact with the lesion, the step of expansion occurring independently of the-flow of pressurized drug-containing liquid into the membrane and through the pores in the membrane. - View Dependent Claims (16)
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17. Apparatus for applying a drug to a localized area of a tubular body vessel comprising:
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an expandable, porous outer membrane; an elongate flexible tube connected to said membrane; means for pumping a drug-containing liquid through said tube into said membrane and through pores in said membrane; and means for mechanically expanding the membrane into contact with the vessel independently of the pumping of the liquid into and through said membrane. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification