Drug delivery medical device
First Claim
1. A medical device comprising:
- a balloon; and
a coating on at least a portion of the balloon,wherein the coating comprises smooth and spherical particles having rapamycin particles encapsulated in a first polymer material prior to inclusion in the coating, the particles being from about 0.5 μ
m to about 10 μ
m in size and the first polymer being PLGA, andwherein each particle is at least partially encapsulated in a second polymer material in the coating.
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Accused Products
Abstract
A medical device that releases a pharmaceutical agent to a target site is disclosed. The medical device includes a balloon, and a coating on at least a portion of the balloon. The coating includes particles of a pharmaceutical agent. Each particle of the particles of the pharmaceutical agent is at least partially encapsulated in a polymer material. A method of releasing a pharmaceutical agent at a target site is also disclosed. The method includes the steps of providing a device including a balloon, and a coating on at least a portion of the balloon, the coating including particles of a pharmaceutical agent, and each particle of the pharmaceutical agent is at least partially encapsulated in a polymer material; positioning the device to allow the balloon to reach the target site; and inflating the balloon of the device.
526 Citations
39 Claims
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1. A medical device comprising:
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a balloon; and a coating on at least a portion of the balloon, wherein the coating comprises smooth and spherical particles having rapamycin particles encapsulated in a first polymer material prior to inclusion in the coating, the particles being from about 0.5 μ
m to about 10 μ
m in size and the first polymer being PLGA, andwherein each particle is at least partially encapsulated in a second polymer material in the coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 38, 39)
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29. A method of releasing a pharmaceutical agent at a target site, comprising
providing a device comprising a balloon, and a coating on at least a portion of the balloon, wherein the coating comprises smooth and spherical particles having rapamycin particles encapsulated in a first polymer prior to inclusion in the coating, the particles being from about 0.5 μ - m to about 10 μ
m in size and the first polymer being PLGA, and wherein each particle is at least partially encapsulated in a second polymer material in the coating;positioning the device to allow the balloon to reach the target site; and inflating the balloon of the device, wherein at least some of the pharmaceutical agent is released to the target site upon inflating the balloon. - View Dependent Claims (30, 31, 32, 33, 34, 35)
- m to about 10 μ
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36. A method of forming polymer-encapsulated crystalline rapamycin, the method comprising:
- forming the emulsion-based mixture comprising the pharmaceutical agent and the polymer material;
evaporating a portion of the emulsion-based mixture, and filtering the remaining emulsion-based mixture. - View Dependent Claims (37)
- forming the emulsion-based mixture comprising the pharmaceutical agent and the polymer material;
Specification