Anti-microbial gas apparatus and method

• US 8,501,090 B2
• Filed: 03/24/2009
• Issued: 08/06/2013
• Est. Priority Date: 03/24/2008
• Status: Active Grant

• Current Assignee: SYK Technologies, LLC
• Original Assignee: Pate Baird PLLC
• Inventors: Minton, Christian S., Minton, Stephen, Miller, John William Randolph
• Primary Examiner(s): Marcheschi, Michael
• Assistant Examiner(s): Vandeusen, Christopher
• Application Number:
  US12/410,442
• Publication Number:
  US 20090291022A1
• Time in Patent Office: 1,596 Days
• Field of Search: 422/29
• US Class Current: 422/29
• CPC Class Codes: A61L 2/0094 Gaseous substances
• CPC Class Codes: A61L 2/20 Gaseous substances, e.g. vapours
• CPC Class Codes: A61L 2202/11 Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
• CPC Class Codes: A61L 2202/14 Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs

Abstract

An apparatus and method administering nitric oxide at very high concentrations to healthy skin, tools, implements, support surfaces, and sterile fields to provide sterilization. The apparatus and method providing sterilization in a dry environment lacking the common undesirable effects of anti-microbial soaps and antiseptics.

Claims

1. A method comprising:

providing a surface to be sterilized;

substantially enclosing the surface within a volume;

providing a container defining the volume and comprising an inlet and an exit;

providing a generator generating a stream of nitric oxide, wherein the generator delivers the stream at negative gage pressure;

providing a conduit connecting the generator to the inlet;

controlling incursion of air into the volume from an external environment thereof;

introducing into the volume a preselected concentration of nitric oxide, wherein introducing comprises conducting the stream from the generator through the conduit to the inlet;

providing a controller maintaining the preselected concentration of nitric oxide;

waiting a preselected time for the nitric oxide to sterilize the surface;

removing the surface from the volume; and

using the surface in an application requiring the surface to be sterile.

2. A method comprising:

providing a surface to be sterilized;

substantially enclosing the surface within a volume;

controlling incursion of air into the volume from an external environment thereof;

introducing into the volume a preselected concentration of nitric oxide, and generating the nitric oxide at negative gage pressure;

waiting a preselected time for the nitric oxide to sterilize the surface;

removing the surface from the volume; and

using the surface in an application requiring the surface to be sterile.

3. The method of claim 2, wherein generating further comprises heating a nitrite and a nitrate in the presence of a metal.

4. A method comprising:

obtaining a container providing a controlled environment, defining a volume limiting incursion of ambient air thereinto, and comprising an inlet and an exit;

obtaining a generator generating a stream of nitric oxide, wherein the stream is substantially pure nitric oxide;

operating the generator to deliver the stream at negative gage pressure;

arranging a conduit conducting the stream from the generator to the inlet;

selecting a surface to be sterilized;

substantially enclosing the surface within the volume;

controlling incursion of air into the volume from an external environment thereof;

connecting the generator to the inlet of the container;

introducing into the volume a preselected concentration of nitric oxide;

providing a controller maintaining the preselected concentration of nitric oxide;

waiting a preselected time for the nitric oxide to sterilize the surface; and

removing the surface from the volume.

5. The method of claim 4, wherein the generator further comprises a heater providing energy into a nitrite and a nitrate in the presence of a metal.

6. The method of claim 5, further comprising controlling by the controller, a concentration of the nitric oxide to a preselected concentration value for the preselected time, rendering the surface sterilized of microbes to a preselected sterilization value corresponding to a sterilization criterion.

7. The method of claim 6 wherein the surface is at least one of:

the skin of a hand of a user;

or

a tool used by the user.