Surgery plume filter device and method of filtering

• US 5,522,808 A
• Filed: 02/18/1994
• Issued: 06/04/1996
• Est. Priority Date: 03/16/1992
• Status: Expired due to Fees

• Current Assignee: Envirosurgical, Inc.
• Original Assignee: Envirosurgical, Inc.
• Inventors: Skalla, Randy M.
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): CLARKE, ROBERT A
• Application Number:
  US08/198,480
• Time in Patent Office: 837 Days
• Field of Search: 422/1, 422/4, 422/28, 422/33, 422/168, 422/169, 604/317, 604/319, 55/482, 55/486, 95/90-92, 95/150, 96/131, 96/136
• US Class Current: 604/319
• CPC Class Codes: A61B 18/00 Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body eye surgery A61F9/007; ear surgery A61F11/00
• CPC Class Codes: A61B 2218/008 for smoke evacuation
• CPC Class Codes: A61L 9/16 using physical phenomena
• CPC Class Codes: B01D 2253/102 Carbon
• CPC Class Codes: B01D 2253/106 Silica or silicates
• CPC Class Codes: B01D 2253/25 Coated, impregnated or composite adsorbents
• CPC Class Codes: B01D 2257/408 Cyanides, e.g. hydrogen cyanide (HCH)
• CPC Class Codes: B01D 2257/70 Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
• CPC Class Codes: B01D 2257/80 Water
• CPC Class Codes: B01D 2257/90 Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
• CPC Class Codes: B01D 2257/91 Bacteria; Microorganisms
• CPC Class Codes: B01D 2259/4146 Contiguous multilayered adsorbents
• CPC Class Codes: B01D 2259/4533 for medical purposes
• CPC Class Codes: B01D 2259/455 for transportable use portable devices B01D2259/4541
• CPC Class Codes: B01D 2275/10 Multiple layers
• CPC Class Codes: B01D 46/0036 by adsorption or absorption
• CPC Class Codes: B01D 46/009 Identification of filter type or position thereof, e.g. by transponders or bar codes
• CPC Class Codes: B01D 46/10 Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
• CPC Class Codes: B01D 46/24 Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
• CPC Class Codes: B01D 46/62 connected in series
• CPC Class Codes: B01D 53/0415 : Beds in cartridges
• CPC Class Codes: B01D 53/0446 : Means for feeding or distributing gases
• CPC Class Codes: B01D 53/261 : by adsorption
• CPC Class Codes: B01D 53/58 : Ammonia
• CPC Class Codes: B01D 53/72 : Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons

Abstract

A filter device and method of filtering components from a surgery plume. The filter device is comprised of a plurality of elements which react with one or more components of a surgery plume, such as that generated during electrocautery or laser surgery. The filter device, particularly in conjunction with a separate particle filter, removes cyanide, formaldehyde, benzene, and particulates, as well as odor-causing species and moisture from the surgery plume.

Claims

1. A method of treating an airstream containing gaseous and particulate materials from a surgery plume comprising:

directing a surgery plume airstream containing gaseous and particulate materials including cyanide, formaldehyde, organic compounds, moisture and odor-causing species into a container adapted to accept and exhaust an airstream;

introducing into said container a reactive solution;

forming and breaking down a foam with said reactive solution and said airstream in an area inside said container;

maintaining said cyanide, formaldehyde, organic compounds, and odor-containing species contained in said airstream in said foam forming area for a time sufficient to effect removal thereof from said airstream; and

exhausting a treated airstream from said container.

2. The method of claim 1 wherein said airstream is directed into said container at a rate of at least about forty SCFM.

3. The method of claim 1 further comprising passing said airstream through a desiccant layer prior to said exhausting.

4. The method of claim 3 further comprising passing said airstream through an activated carbon layer after passing through said desiccant layer and prior to said exhausting.

5. The method of claim 1 wherein said airstream is directed into said container at a rate of flow between about 55 SCFM and about 70 SCFM.

6. The method of claim 1 wherein the particulate materials of said airstream directed into said container comprise matter formed during a process of burning tissue, and bacteria and viruses.

7. The method of claim 1 further comprising contacting said dispersion with bacteria and viruses in said airstream for a time sufficient to kill said bacteria and said viruses.

8. The method of claim 1 further comprising passing said airstream through an activated carbon layer prior to said exhausting.

9. The method of claim 1 further wherein said foam is continually formed and broken down.

10. A method of treating an airstream containing bacteria and viruses from a surgery plume comprising:

directing a surgery plume airstream containing bacteria and viruses at an inlet air pressure into a container adapted to accept and exhaust an airstream;

introducing into said container a reactive solution;

forming and breaking down a foam in an area inside said container;

maintaining said bacteria and viruses in said foam forming area for a time sufficient to kill said bacteria and said viruses; and

exhausting a treated airstream from said container at an outlet air pressure approximately corresponding to said inlet air pressure.

11. The method of claim 10 further comprising passing said airstream through an activated carbon layer prior to said exhausting.

12. A method of treating an airstream containing bacteria and viruses from a surgery plume comprising:

inducing a vacuum in a container adapted to accept and exhaust an airstream;

directing a surgery plume airstream containing bacteria and viruses into said container;

introducing into said container a reactive solution;

forming and breaking down a foam with said reactive solution and said airstream inside said container;

contacting said foam with said bacteria and viruses for a time sufficient to kill said bacteria and said viruses; and

exhausting a treated airstream from said container.

13. The method of claim 12 further wherein said foam is continually formed and broken down.

14. A method of treating an airstream containing gaseous and particulate materials generated from burning tissue comprising:

directing an airstream containing gaseous and particulate materials generated from burning tissue into a container adapted to accept and exhaust an airstream;

introducing into said container a solution reactive to at least one of the gaseous and particulate materials in said airstream;

forming and breaking down a foam with said reactive solution and said airstream in an area inside said container;

maintaining said gaseous and particulate materials in said airstream in said foam forming area for a time sufficient to effect removal thereof from said airstream; and

exhausting a treated airstream from said container.

15. The method of claim 14 further wherein said foam is continually formed and broken down.

16. A method of treating an airstream containing gaseous and particulate materials from a surgery plume comprising:

directing the airstream comprising said gaseous and particulate materials into a canister having an inlet and an outlet, said inlet adapted to receive an airstream containing gaseous and particulate materials from a surgery plume;

passing said airstream through a series of filter members positioned inside said canister downstream of said inlet for treating said airstream, said series including at least one said filter member incorporating a component reactive to cyanide and at least one said filter member incorporating a component reactive to aldehydes;

passing said airstream through a discrete desiccant layer downstream of said inlet and a discrete activated carbon layer downstream of said desiccant layer; and

exhausting said treated airstream through said outlet of said canister.