Personal protection and ventilation system

Patent metadata

Field	Value
Publication number	US-11528954-B2
Application number	US-201916549295-A
Country	US
Kind code	B2
Filing date	Aug 23, 2019
Priority date	Aug 24, 2018
Publication date	Dec 20, 2022
Grant date	Dec 20, 2022

Abstract

A personal protection and ventilation system is provided. The system includes a gown having front and rear panels, a hood, and visor; a fan; an air tube; and a helmet. The fan is positioned between the wearer and a body-facing surface of the rear panel. The front panel and at least a portion of the hood are formed from a first material including a first spunbond layer, a spunbond-meltblown-spunbond laminate, and a liquid impervious elastic film disposed therebetween. The first material has an air volumetric flow rate of less than about 1 standard cubic feet per minute (scfm). The rear panel is formed from a second material including a nonwoven laminate having an air volumetric flow rate of about 20 scfm to about 80 scfm. Therefore, the fan is able to intake a sufficient amount of air from the environment through the rear panel to provide cooling/ventilation to the hood.

First claim

What is claimed is:

1. A personal protection and ventilation system comprising:
a disposable surgical gown comprising a front panel, a first sleeve, a second sleeve, a rear panel, a hood, and a visor, wherein the front panel, the first sleeve, the second sleeve, and at least a part of the hood are formed from a first material comprising an outer spunbond layer having a surface that defines an outer-facing surface of the disposable surgical gown, a spunbond-meltblown-spunbond (SMS) laminate having a surface that defines a body-facing surface of the disposable surgical gown, and a liquid impervious elastic film disposed therebetween, wherein the elastic film meets the requirements of ASTM-1671, wherein the first material has an air volumetric flow rate of less than 1 standard cubic feet per minute (scfm), and wherein the rear panel is formed from a second material comprising a nonwoven laminate that is air breathable, wherein the second material has an air volumetric flow rate ranging from 20 scfm to 80 scfm;
a helmet having a first side and a second side, an air conduit extending from a rear portion of the helmet to a front portion of the helmet to define a bifurcated air outlet, and a head band having a front portion and a rear portion, wherein the rear portion of the head band includes a cradle;
a fan module comprising a fan, wherein the fan intakes air from an outside environment through the rear panel of the disposable surgical gown, wherein the fan is positioned between the wearer and an inner-facing surface of the rear panel of the disposable surgical gown; and
an air tube, wherein the air tube delivers air taken in from the fan module to the helmet, wherein the cradle engages with the air tube, wherein the air conduit then delivers the air to the bifurcated air outlet at the front portion of the helmet to provide ventilation to the wearer.

2. The personal protection and ventilation system of claim 1 , wherein the bifurcated air outlet is positioned at an angle α that ranges from 5° to 60° with respect to an x-axis or horizontal direction towards a y-axis or vertical direction.

3. The personal protection and ventilation system of claim 1 , wherein the air conduit and the head band are formed from a polymer, cellulose, or a combination thereof.

4. The personal protection and ventilation system of claim 1 , wherein the hood is formed completely from the first material.

5. The personal protection and ventilation system of claim 1 , wherein a first portion of the hood is formed from the first material and a second portion of the hood is formed from the second material, wherein the first portion and the second portion are separated by a seam located at a rear of the disposable surgical gown, wherein the first portion is located above the seam and includes all of the hood above the seam, and wherein the second portion is located below the seam.

6. The personal protection and ventilation system of claim 1 , wherein the visor includes a first connecting tab present on a first side of the visor and a second connecting tab present on a second side of the visor, wherein the helmet includes a first receiving tab on the first side of the helmet and a second receiving tab present on the second side of the helmet, wherein the first and second connecting tabs and the first and second receiving tabs secure the disposable surgical gown to the helmet when engaged.

7. The personal protection and ventilation system of claim 1 , wherein the head band includes padding disposed between the front portion of the head band and the wearer.

8. The personal protection and ventilation system of claim 1 , wherein the helmet includes a securing band extending between the first side of the helmet and the second side of the helmet, wherein the securing band includes an adjustment strap located on the first side of the helmet, the second side of the helmet, or both.

9. The personal protection and ventilation system of claim 1 , wherein a light source is attached to the front portion of helmet.

10. The personal protection and ventilation system of claim 9 , wherein the light source is contained within a support mounted to the first portion of the helmet, further wherein the support includes a lever to adjust an area of illumination of the light source.

11. The personal protection and ventilation system of claim 1 , wherein the elastic film includes a core layer disposed between a first skin layer and a second skin layer, wherein the core layer comprises polypropylene and the first skin layer and the second skin layer each comprise a copolymer of polypropylene and polyethylene.

12. The personal protection and ventilation system of any of claim 1 , wherein the elastic film has a basis weight ranging from 5 gsm to 50 gsm.

13. The personal protection and ventilation system of claim 11 , wherein the core layer includes a fluorochemical additive present in an amount ranging from 0.1 wt. % to 5 wt. % based on the total weight of the core layer.

14. The personal protection and ventilation system of claim 11 , wherein the core layer includes a filler that is present in the core layer in an amount ranging from 50 wt. % to 85 wt. % based on the weight of the core layer.

15. The personal protection and ventilation system of claim 1 , wherein the outer spunbond layer and the SMS laminate include a semi-crystalline polyolefin, wherein the semi-crystalline polyolefin includes a copolymer of propylene and ethylene, wherein the ethylene is present in an amount ranging from 1 wt. % to 20 wt. %.

16. The personal protection and ventilation system of claim 1 , wherein the outer spunbond layer has a basis weight ranging from 5 gsm to 50 gsm and the SMS laminate has a basis weight ranging from 10 gsm to 60 gsm.

17. The personal protection and ventilation system of claim 1 , wherein the outer spunbond layer and the SMS laminate each include a slip additive, wherein the slip additive comprises erucamide, oleamide, stearamide, behenamide, oleyl palmitamide, stearyl erucamide, ethylene bis-oleamide, N,N′-Ethylene Bis(Stearamide) (EBS), or a combination thereof, wherein the slip additive is present in the outer spunbond layer in an amount ranging from 0.1 wt. % to 4 wt. % based on the total weight of the outer spunbond layer, and wherein the slip additive is present in a layer of the SMS laminate in an amount ranging from 0.25 wt. % to 6 wt. % based on the total weight of the layer.

18. The personal protection and ventilation system of claim 1 , wherein the rear panel comprises a SMS laminate.

19. The personal protection and ventilation system of claim 18 , wherein the rear panel has a basis weight ranging from 20 gsm to 80 gsm.

20. The personal protection and ventilation system of claim 1 , wherein the rear panel includes a slip additive comprising erucamide, oleamide, stearamide, behenamide, oleyl palmitamide, stearyl erucamide, ethylene bis-oleamide, N,N′-Ethylene Bis(Stearamide) (EBS), or a combination thereof, wherein the slip additive is present in the rear panel in an amount ranging from 0.25 wt. % to 6 wt. % based on the total weight of each spunbond layer in the SMS laminate of the rear panel.

Assignees

• O & M Halyard Inc

Inventors

• Jascomb Jerald T
• Lin Brian E
• Joseph Dennis
• Potnis Prasad S
• Collins Brian M
• Mithani Namita A

Classifications

• A62B17/04

  Hoods · CPC title

• A42B3/044

  Lighting devices, e.g. helmets with lamps · CPC title

• A42B1/048

  Detachable hoods · CPC title

• A62B18/006

  with pumps for forced ventilation (A62B18/045 takes precedence) · CPC title

• B32B5/269

  characterised by at least one non-woven fabric layer that is a melt-blown fabric next to a non-woven fabric layer that is a spunbonded fabric · CPC title