Method of eliminating stratum corneum from the skin and an instrument to be used therefor

• US 5,190,558 A
• Filed: 11/07/1990
• Issued: 03/02/1993
• Est. Priority Date: 11/08/1989
• Status: Expired due to Term

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Ito, Narushi
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): DAWSON, GLENN K
• Application Number:
  US07/610,057
• Time in Patent Office: 846 Days
• Field of Search: 606/131, 606/132, 606/133, 606/134, 604/289, 604/290, 604/303, 604/307, 604/308, 156/579, 424/449
• US Class Current: 606/131
• CPC Class Codes: A61B 17/322 Skin grafting apparatus
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61M 3/0279 Cannula; Nozzles; Tips; their connection means

Abstract

Pretreatment of eliminating stratum corneum form the skin for non-invasive measurement of biomedical substances in blood has been improved as to time required, pain to man for test, stability of extraction and invasion to the skin, by introducing chemical and/or steam-spraying treatment(s) of the skin to swell and/or decompose keratinized cells and/or an adhesive strength detector to monitor the elimination level.

Claims

1. An instrument for eliminating stratum corneum from the skin comprising a roller on which an adhesive tape is wound, means for spraying steam and a body which supports said steam-spraying means and forms a grip for holding the roller, whereby the steam spraying means applies steam to the skin to swell keratinized cells prior to their removal by said adhesive tape.

2. The instrument according to claim 1, further comprising an adhesive strength detector for detecting adhesive strength between the skin and the adhesive tape provided in the body.

3. The instrument according to claim 1, wherein the adhesive tape contains a keratolytic agent for swelling and/or decomposing keratinized cells on the skin surface.

4. A disposable elimination tape unit for eliminating stratum corneum from the skin comprising;

an adhesive tape portion containing a keratolytic agent for swelling and/or decomposing keratinized cells of the skin surface, and a non-adhesive tab portion attached to the adhesive tape portion in the form of a tab and a fragile portion, said fragile portion being provided in the middle of the tab, or between the adhesive tape portion and the tab, and having a predetermined strength wherein the fragile portion will tear or deform when a stress given thereto exceeds a certain level indicative of the elimination of said keratinized cells.