US 11,779,321 B2
Wound retractor and diffuser
Bernard Tsz Lun Ip, Auckland (NZ); Joseph Patrick Walter Strevens, Auckland (NZ); Jessica Rachel Fogarin, Auckland (NZ); Jonathan Stuart McFedries, Auckland (NZ); James Alexander Gordon, Auckland (NZ); Michael Joseph Blackhurst, Auckland (NZ); Jonathan David Harwood, Auckland (NZ); Ali Ghalib Abdul Rahman Ghalib, Auckland (NZ); and Natalie May Robertson, Auckland (NZ)
Assigned to Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed by Fisher & Paykel Healthcare Limited, Auckland (NZ)
Filed on Dec. 23, 2020, as Appl. No. 17/132,565.
Application 17/132,565 is a continuation of application No. 15/539,575, granted, now 10,925,591, previously published as PCT/NZ2015/050219, filed on Dec. 23, 2015.
Claims priority of provisional application 62/096,469, filed on Dec. 23, 2014.
Prior Publication US 2021/0196257 A1, Jul. 1, 2021
Int. Cl. A61B 17/02 (2006.01); A61B 17/34 (2006.01); A61B 90/40 (2016.01)
CPC A61B 17/0218 (2013.01) [A61B 17/02 (2013.01); A61B 17/3423 (2013.01); A61B 2017/0212 (2013.01); A61B 2017/0225 (2013.01); A61B 2017/349 (2013.01); A61B 2017/3492 (2013.01); A61B 2090/401 (2016.02); A61B 2217/005 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A wound retractor configured to be inserted into a wound opening of a body cavity of a patient, the wound retractor comprising:
an upper ring;
a lower ring; and
a sleeve extending between and connecting the upper ring to the lower ring, wherein the sleeve comprises:
a gases impermeable layer, wherein the gases impermeable layer is on an inner side of the sleeve such that the gases impermeable layer is configured to face the body cavity, and wherein the gases impermeable layer comprises at least one aperture, the at least one aperture configured to allow gases to enter the body cavity, and
a gases permeable layer.