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US 7,504,125 B1Granted
System and method for coating implantable devices
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorsStephen D. Pacetti, Wouter E. Roorda, Ni Ding
Life of this patent
Estimating the term…
Abstract
A method and system of coating an implantable device, such as a stent, are provided.
Claims19
A method of coating an implantable medical device comprising:
- applying a composition, from a coating dispenser, including a solvent to an implantable medical device;
- and
- directing a gas, from a gas dispenser positioned at a distance from the coating dispenser, onto the implantable medical device, wherein if the solvent has a vapor pressure greater than 17.54 Torr at ambient temperature the temperature of the gas is adjusted to decrease the evaporation rate of the solvent, and if the solvent has a vapor pressure of less than 17.54 Torr at ambient temperature the temperature of the gas is adjusted to increase the evaporation rate of the solvent, wherein the composition is applied simultaneous with the directing of the gas.
A method of coating an implantable medical device comprising:
- applying a composition, from a coating dispenser, including a solvent to an implantable medical device;
- and
- directing a gas, from a gas dispenser positioned at a distance from the coating dispenser, onto the implantable medical device, wherein if the solvent has a vapor pressure greater than 17.54 Torr at ambient temperature the temperature of the gas is adjusted to decrease the evaporation rate of the solvent, and if the solvent has a vapor pressure of less than 17.54 Torr at ambient temperature the temperature of the gas is adjusted to increase the evaporation rate of the solvent, wherein the act of directing the gas is performed at a flow rate of about 300 feet/minute to about 10,000 feet/minute.
A method of coating an implantable medical device comprising:
- applying a composition, from a coating dispenser, including a solvent to an implantable medical device;
- and
- blowing a gas, from a gas blower positioned at a distance from the coating dispenser, directly onto the implantable medical device to either increase or decrease the evaporation rate of the solvent from the composition on the implantable medical device, wherein if the solvent is non-volatile the temperature of the gas is adjusted to increase the evaporation of the solvent, and if the solvent is volatile the temperature of the gas is adjusted to decrease the evaporation rate of the solvent.
The method of 3, wherein the steps of applying and blowing are conducted simultaneously.
A method of coating an implantable medical device comprising:
- applying a composition, from a coating dispenser, including a solvent to an implantable medical device;
- and
- directing a gas, from a gas dispenser positioned at a distance from the coating dispenser, onto the implantable medical device, wherein if the solvent has a vapor pressure greater than 17.54 Torr at ambient temperature the temperature of the gas is adjusted to decrease the evaporation rate of the solvent, and if the solvent has a vapor pressure of less than 17.54 Torr at ambient temperature the temperature of the gas is adjusted to increase the evaporation rate of the solvent, wherein applying the composition comprises spraying of the composition;
- wherein the directing of the gas comprises blowing the gas directly onto the device;
- wherein the spraying and blowing are conducted simultaneously;
- and wherein the blowing does not affect the direction of the spray onto the device.
3 more elements
A method of coating a stent comprising;
- positioning a stent on a support assembly;
- applying a coating substance including a solvent from a dispenser to the stent;
- blowing a gas from a blower onto the stent to either increase or decrease the evaporation rate of the solvent from the coating substance on the stent based on the volatile properties of the solvent;
- and
- rotating the stent supported by the support assembly about a longitudinal axis of the stent, wherein the coating substance includes paclitaxel, docetaxel, or rapamycin or analogs or derivative thereof.
2 more elements
Dependencies are inferred from the claim text.