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This invention is directed to a new method of mass-transfer/fabrication of micro-sized features/structures onto the inner diameter (ID) surface of a stent. This new approach is provided by technique of through mask electrical micro-machining One embodiment discloses an application of electrical micr

This invention is directed to a new method of mass-transfer/fabrication of micro-sized features/structures onto the inner diameter (ID) surface of a stent. This new approach is provided by technique of through mask electrical micro-machining One embodiment discloses an application of electrical micro-machining to the ID of a stent using a customized electrode configured specifically for machining micro-sized features/structures.

대표청구항 ▼

1. A method of forming a patterned medical device, comprising the steps of: a. Providing an electrode having an outer surface, the electrode comprising a conducting material;b. Coating the outer surface of the electrode with a non-conducting material to form a masked electrode;c. Defining a micro-pa

1. A method of forming a patterned medical device, comprising the steps of: a. Providing an electrode having an outer surface, the electrode comprising a conducting material;b. Coating the outer surface of the electrode with a non-conducting material to form a masked electrode;c. Defining a micro-pattern on the outer surface of the masked electrode to form the patterned masked electrode;d. Coupling the patterned masked electrode with an inner surface of a medical device to be patterned and electrochemically transferring the defined micro-pattern from the patterned masked electrode to the inner surface of the medical device to be patterned. 2. The method of claim 1, wherein the step of coating the electrode further comprises coating the electrode by vacuum deposition. 3. The method of claim 1, wherein the step of defining the micro-pattern further comprises laser ablating the outer surface of the masked electrode to form the micro-pattern. 4. The method of claim 3, wherein the step of laser ablating further comprises laser ablating with a laser selected from the group consisting of a femto-second laser, an excimer laser, a water assisted laser, and a chirped pulse amplification type Ti-sapphire based laser system. 5. The method of claim 1, wherein the coating step further comprises coating the electrode by dipping, spray coating, air brushing, lamination, or chemical vapor deposition techniques. 6. The method of claim 1, wherein the step of defining the micro-pattern further comprises defining the micro-pattern to further comprise a cross-sectional configuration selected from the group consisting of square, u-shaped, triangular, v-shaped, rectangular, keyway shaped. 7. A method of mass-transferring a micro-pattern onto a medical device, comprising the steps of: a. Providing a patterned masked electrode having an outer surface, the patterned masked electrode comprising: i. An electrode comprising a conducting material;ii. A non-conducting material coating an outer surface of the electrode to form a masked electrode; andiii. A micro-pattern defined on an outer surface of the masked electrode to form the patterned masked electrode;b. Mounting the medical device on the patterned masked electrode, wherein an inner surface of the medical device is in contact with the outer surface of the patterned masked electrode; andc. Transferring the micro-pattern onto the inner surface of the medical device by electrochemical micromachining. 8. The method of claim 7, further comprising the step of removing the medical device from the patterned masked electrode. 9. The method of claim 7, wherein the step of transferring the micro-pattern further comprises the steps of: a. electrically contacting the medical device and the patterned masked electrode;b. providing an electrolyte solution;c. placing the medical device and patterned masked electrode in the electrolyte solution; andd. micro-machining the first surface of the medical device in machining gaps. 10. The method of claim 9, wherein the step of micro-machining further comprises electrochemical machining utilizing a pulsed current. 11. The method of claim 9, further comprising the steps of removing the medical device and patterned masked electrode from the electrolyte solution; and washing and drying the medical device and patterned masked electrode. 12. The method of claim 9, wherein the step of transferring the micro-pattern further comprises transferring the micro-pattern such that a depth of the micro-pattern transferred to the inner surface of the medical device is between approximately 0.5 microns to approximately 10 microns. 13. The method of claim 7, wherein the non-conducting material is coated by vacuum deposition. 14. The method of claim 7, wherein the micro-pattern is defined by a laser ablating step of laser ablating the outer surface of the masked electrode to form the micro-pattern. 15. The method of claim 14, wherein the laser ablating the outer surface of the masked electrode further comprises laser ablating with a laser selection from the group consisting of a femto-second laser, an excimer laser, a water assisted laser, and a chirped pulse amplification type Ti-sapphire based laser system. 16. The method of claim 14, wherein the step of laser ablating further comprises utilizing a cover gas. 17. The method of claim 7, wherein the non-conducting material is coated by a coating step selected from the group consisting of: coating the electrode by dipping, spray coating, air brushing, lamination, and chemical vapor deposition techniques. 18. The method of claim 7, wherein the micro-pattern comprises a cross-sectional configuration selected from the group consisting of square, u-shaped, triangular, v-shaped, rectangular, keyway shaped.