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Method for rapid temporal control of molecular transport across tissue

Assignee: Massachusetts Institute of Technology
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Filing: 1993-07-23
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Granted: 1996-08-20
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Expires: 2013-07-23
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Abstract

Abstract A method is disclosed for treating tissue in response to a stimulus generated by the tissue. In one embodiment, the method transdermally treats an organism in response to a stimulus. In this embodiment, the medication is applied to epidermis of the organism, and the epidermis is electroporated in response to a stimulus, whereby the medication passes through the epidermis at a rate sufficient to alter the stimulus, thereby transdermally treating the organism. In another embodiment, the method measures a blood component content of blood. A portion of epidermis is electroporated to cause an aqueous fluid to be directed through an electroporated epidermis to a surface of the epidermis. Thereafter, the blood component content of the aqueous fluid is measured for correlation with a known aqueous fluid blood component content associated with a known concentration of blood component in the blood. The blood component concentration of the blood can thereby be measured. In still another embodiment, the method includes directing a medication to the tissue which can alter the stimulus when the tissue is electroporated, and electroporating the tissue in response to a stimulus, whereby the medication passes through the tissue in an amount sufficient to alter the stimulus, thereby treating the organism.

Inventors

  • 👤 Uwe Pliquett
  • 👤 Mark R. Prausnitz
  • 👤 James C. Weaver
  • 👤 Robert S. Langer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:04
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0412; A61B; A61B5/00; A61B5/145; A61B5/14507; A61B5/1451; A61B5/14514; A61B5/41; A61B5/414; A61B5/418; A61K; A61K31/00; A61K41/00; A61K41/0047; A61K48/00; A61N1/18; A61N1/32; A61N1/325; A61N1/327; C; C07; C07K; C07K14/00; C07K14/82; C12; C12N; C12N15/00; C12N15/09; C12N15/87; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/66; G01N33/84; A61B5/14532; A61N1/0452

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 79 words
A method for measuring a blood component content of blood, comprising the steps of: a) electroporating a portion of epidermis to cause an aqueous fluid to be directed through the electroporated epidermis to a surface of the epidermis; and b) measuring the blood component content of the aqueous fluid for correlation with a known aqueous fluid blood component content associated with a known concentration of blood component in the blood, thereby measuring the blood component concentration of the blood.
Claim 2
Independent Claim 79 words
A method for measuring a blood component content of blood, comprising the steps of: a) electroporating a portion of epidermis to cause an aqueous fluid to be directed through the electroporated epidermis to a surface of the epidermis; and b) measuring the blood component content of the aqueous fluid for correlation with a known aqueous fluid blood component content associated with a known concentration of blood component in the blood, thereby measuring the blood component concentration of the blood.
Claim 3
Dependent Claim 11 words
A method of claim 1 wherein the blood component is glucose.
Claim 4
Dependent Claim 14 words
A method of claim 1 wherein the blood component concentration is hydrogen ion concentration.
Claim 5
Dependent Claim 35 words
A method of claim 1 wherein the electroporation is sufficient to cause at least one milliliter of aqueous fluid to be directed through the electroporated epidermis in a period of less than about ten minutes.
Claim 6
Dependent Claim 35 words
A method of claim 4 wherein the electroporation is sufficient to cause at least one milliliter of aqueous fluid to be directed through the electroporated epidermis in a period of less than about one minute.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1999-08-20 2000-02-19 2000-08-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2003-08-20 2004-02-19 2004-08-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2007-08-20 2008-02-19 2008-08-20 $7700.00 Window Closed / Lapsed

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