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US 2019/0290809 A1Published application
Pattern transfer device for mass transfer of micro-patterns onto medical devices
AssigneeVactronix Scientific, LLC
InventorArmando Garza
Life of this patent
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Abstract
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.
Claims12
An assembly, comprising:
- a. An electrically conductive electrode member having a first surface and an opposing second surface, a first end, a second end and an intermediate workpiece mounting region;
- b. A non-conductive coating at least one of the first surface and the second surface of the electrode member;
- c. A micro-pattern of openings defined in and passing through the non-conductive coating;
- the micro-pattern of openings exposing, through the micro-pattern of openings, defined elongate slot portions in the intermediate workpiece mounting region of the electrode member, the micro-pattern being configured to impart a pattern corresponding to the elongate slots portions on a surface of a workpiece;
- and
- d. A workpiece positioned adjacent the non-conductive coating at the intermediate workpiece mounting region of the electrode member.
3 more elements
A patterned masked electrode, comprising:
- a. A generally cylindrical electrically conductive electrode member having a first wall surface and an opposing second wall surface, a first end, a second end and a workpiece mounting region intermediate the first end and the second end;
- b. A non-conductive coating on at least one of the first wall surface and the second wall surface and on the workpiece mounting region of the electrode member;
- and
- c. A pattern defined in the non-conductive coating passing through the non-conductive coating and exposing defined portions of the electrode member, the micro-pattern corresponding to a plurality of continuous elongate slots adapted to transfer electrical energy through the micro-pattern of a plurality of continuous elongate slots to a surface of a workpiece positioned on the workpiece mounting region.
1 more element
Dependencies are inferred from the claim text.