Patient isolation system and method

Patent metadata

Field	Value
Publication number	US-11077005-B1
Application number	US-202017028417-A
Country	US
Kind code	B1
Filing date	Sep 22, 2020
Priority date	Apr 6, 2020
Publication date	Aug 3, 2021
Grant date	Aug 3, 2021

Abstract

A portable, protective enclosure for coupling to a patient support includes a collapsible frame, a canopy drape, a pair of gloves and sleeves configured for receiving hands and arms of a user, and a zipper disposed along one of the side surfaces of the drape, wherein the side surface is not folded about itself when the zipper is in an open state. A pair of filters are disposed on opposing sides of one of the side surfaces of the canopy drape, the filters together providing high efficiency particulate air filtration for at least 99.97% of airborne particulate 0.3 microns in diameter. Gas-permeable media is provided for air intake. A fan in communication with the first and second filters is provided for creating negative pressure in the internal region of the canopy drape, the fan configured to evacuate air from the internal region. A negative pressure indicator also is included.

First claim

The invention claimed is:

1. A portable, protective enclosure for coupling to a patient support for supporting a mammal comprising:
a collapsible frame comprising a pair of X-shaped linkages coupled with a pair of cross-members;
a canopy drape formed of a transparent, first polymeric material, the canopy drape being bottomless and having a top surface, a plurality of side surfaces, an internal region disposed between the top and side surfaces, an air intake portion, and a first thickness, wherein the canopy drape is coupled to at least one of the cross-members;
a pair of sleeves and gloves configured for receiving hands and arms of a user, the sleeves and gloves together having a closed, first free end, an open, second free end, and a second thickness, wherein the sleeves are coupled to the canopy drape to form an air-tight seal therebetween and the second thickness is less than the first thickness;
a zipper disposed along one of the side surfaces, the zipper having a closed state and an open state, wherein the side surface is not folded about itself when the zipper is in the open state;
a first filter disposed in communication with a second filter, the first and second filters disposed on opposing sides of one of the side surfaces of the canopy drape, wherein the first and second filters together provide high efficiency particulate air filtration to filter at least 99.97% of airborne particulate of 0.3 μm in diameter;
gas-permeable media disposed in communication with and proximate the air intake portion;
a movable fan in communication with the first and second filters for creating a negative pressure of at least 0.01 inches of water in the internal region of the canopy drape, the fan configured to draw in air through the gas-permeable media into the internal region and evacuate air from the internal region through the first and second filters; and
a negative pressure indicator.

2. The enclosure of claim 1 , wherein the first polymeric material is thermoplastic polyurethane and the first thickness is 10 mils.

3. The enclosure of claim 1 , wherein at least one of the sleeves and the gloves is formed of a second polymeric material, the second polymeric material is thermoplastic polyurethane and is transparent, and the second thickness is 2 mils.

4. The enclosure of claim 3 , wherein the negative pressure indicator comprises an expandable vessel coupled to the canopy drape and the expandable vessel is formed of the second polymeric material.

5. The enclosure of claim 1 , wherein the sleeves are coupled to the canopy drape by a coupling selected from the group consisting of welds, bonds, or mechanical connections.

6. The enclosure of claim 5 , wherein the coupling further comprises seam tape.

7. The enclosure of claim 1 , wherein a plurality of grommets are disposed proximate the top surface of the canopy drape.

8. The enclosure of claim 1 , wherein the canopy drape is coupled to both of the cross-members.

9. The enclosure of claim 1 , wherein the fan provides a flow rate of air from the internal region of the canopy drape of between 70 cfm and 100 cfm.

10. The enclosure of claim 1 , further comprising a control system to maintain the negative pressure of at least 0.01 inches of water in the internal region.

11. The enclosure of claim 1 , wherein the internal region has a volume of between about 25 cubic feet and about 125 cubic feet.

12. The enclosure of claim 1 , wherein the negative pressure indicator comprises an expandable vessel coupled to the canopy drape.

13. The enclosure of claim 12 , wherein the expandable vessel comprises indicia for indicating when desired pressure is reached.

14. The enclosure of claim 12 , wherein the expandable vessel is sealingly coupled to a side surface of the canopy drape.

15. The enclosure of claim 1 , wherein the first and second filters together provide high efficiency particulate air filtration to filter at least 99.99% of airborne particulate of 0.3 μm in diameter.

Assignees

• Univ Duke

Inventors

• Economopoulos Konstantinos
• Richardson Eric
• Simmons W Neal
• Thompson Theresa
• Wesorick Benjamin
• Patel Kanishka
• Sondland Maximilian
• Bailas Dimitrios
• Sharma Shikha
• Fearis Paul

Classifications

• A61B90/40

  Apparatus fixed or close to patients specially adapted for providing an aseptic surgical environment · CPC title

• A61B90/05

  Splash shields for protection of the surgeon, e.g. splash guards connected to the apparatus · CPC title

• A61G2203/34

  for pressure · CPC title

• A61G10/02

  with artificial climate; with means to maintain a desired pressure, e.g. for germ-free rooms (dust-free laboratory rooms B01L1/04; decompression arrangements B63C11/32; arrangements or adaptations in aircraft B64D13/00; air-conditioning in general F24F) · CPC title

• A61G10/005 Primary

  Isolators, i.e. enclosures generally comprising flexible walls for maintaining a germ-free environment · CPC title