The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 09, 2019
Filed:
Dec. 21, 2011
Akihiro Hasui, Kagawa, JP;
Atsuhiko Shiraishi, Kagawa, JP;
Ken-ichi Hattori, Kagawa, JP;
Shinji Tanaka, Kagawa, JP;
Hirokazu Takahashi, Kagawa, JP;
Makoto Takahashi, Hokkaido, JP;
Akihiro Hasui, Kagawa, JP;
Atsuhiko Shiraishi, Kagawa, JP;
Ken-ichi Hattori, Kagawa, JP;
Shinji Tanaka, Kagawa, JP;
Hirokazu Takahashi, Kagawa, JP;
Makoto Takahashi, Hokkaido, JP;
TEIKOKU SEIYAKU CO., LTD., Kagawa, JP;
Abstract
The present invention verifies a method of reducing skin irritation (particularly, cumulative skin irritation) caused by transdermal administration of a local anesthetic using iontophoresis, and provides an electrode pad for relief from a puncture pain which is safe not only at single administration but also at repeated administrations. The electrode pad comprises a base sheet; an electrode placed on the base sheet; an adhesive sheet placed on the base sheet and having an opening, within which the electrode being exposed; and a medicament reservoir containing a local anesthetic and placed in the opening of the adhesive sheet while being in contact with the electrode. An inner peripheral surface of the opening of the adhesive sheet and an outer peripheral surface of the medicament reservoir are prevented from coming into contact with human skin while contacting with each other, and thereby skin irritation is reduced.