Ablation and micro-needles

a micro-needle and needle technology, applied in the field of injection delivery, can solve the problems of syringes not being useful for self-administration by patients, and affecting the effect of needle engagemen
US20070010810A1Inactive Publication Date: 2007-01-11MEDICAL MICRODEVICES
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
MEDICAL MICRODEVICES
Publication Date
2007-01-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

A device permits effective engagement of micro-needles with a cutaneous layer thereby to permit for a substance to pass effectively to the cutaneous layer. A flexible or non-flexible material supports an array of micro-needles for receiving the surface of the cutaneous layer so that the proximal ends of the micro-needles pierce to effect a passage of a substance with the micro-needles to the cutaneous layer. A passageway or bladder acts on the substrate to cause the proximal ends of the micro-needles to pass to the cutaneous layer for passage of a substance associated with the micro-needles to the cutaneous layer. The bladder includes apertures located about and spaced from the micro-needles such that suction transmitted though the apertures. The micro-needles are mounted with a movable first substrate. In one form, the first substrate includes a surface with concavities and the micro-needles are mounted in the concavities, and the apertures are located in the concavities. In another form the surface is substantially flat. There can be a third layer spaced relative to the second substrate layer at least partly forming a chamber between the second layer and third layer. There can be a biasing device for urging the first substrate from the cutaneous layer.
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Description

RELATED APPLICATION

[0001] This application is a divisional of U.S. application Ser. No. 11 / 428,303, filed Jun. 30, 2006, which is a continuation-in-part of U.S. application Ser. No. 10 / 906,602, filed Feb. 25, 2005, which is a divisional of U.S. application Ser. No. 10 / 290,819, filed Nov. 8, 2002 and issued as U.S. Pat. No. 6,896,666 on May 24, 2005. The contents thereof are incorporated by reference in their entireties.BACKGROUND OF THE DISCLOSURE

[0002] This disclosure relates to injection delivery cutaneously or subcutaneously. In particular, it relates to a system for stabilizing tissue then facilitating injection of fluids into a body which may be human or animal. More specifically it relates to micro-needles.

[0003] Many systems have been devised for the effective delivery of injectable material such as drugs into a body. These all suffer from one or another drawback.

[0004] A conventional method for administration is a hypodermic syringe, but this has disadvantages. Particula...

Claims

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