Surgery – Instruments – Means for removal of skin or material therefrom
Reexamination Certificate
2006-05-03
2011-11-29
Bui, Vy Q (Department: 3773)
Surgery
Instruments
Means for removal of skin or material therefrom
C606S132000, C604S289000
Reexamination Certificate
active
08066716
ABSTRACT:
An instrument and technique for the removal of epidermal layers in a controlled manner utilizing a hand-held instrument with a working end that (i) a vacuum aspiration system, (ii) a source for delivery of a sterile fluids or pharmacological agents to the skin; and (iii) a skin interface surface in the working end that has specially shape structure for abrading surface layers of the patient's epidermis as the working end is moved over the patient's skin while at the same time causing rapid penetration of the fluids into the skin for therapeutic purposes. Movement of the working end across the skin causes abrasion of the surface layers in a path over the patient's skin. The method of the invention may be used in a periodic treatment for the removal of superficial skin layers that enhances the synthesis of dermal collagen aggregates by inducing the body's natural wound healing response. The method of the invention creates more normal dermal architectures in skin with limited depths of skin removal by the series of superficial treatments that may be comparable to the extent of neocollagenesis caused by a deep skin removal treatment (e.g., CO2laser skin removal).
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File History of Reexamination No. 90/007,683 (Reexamination of U.S. Patent No. 6,241,739, issued Jun. 5, 2001). 3437726 021607.
Ex Parte Reexamination Certificate US 6,241,739 C1, Microdermabrasion Device and Method of Treating the Skin Surface, Inventor Stephen H. Waldron, Dec. 11, 2007, and file history through Aug. 8, 2006.
Axia MedSciences, LLC
Bui Vy Q
Knobbe Martens Olson & Bear LLP
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