US 12,186,476 B2
Systems and methods for using negative pressure wound therapy to manage open abdominal wounds
James D. Lattimore, Safety Harbor, FL (US); and Michael B. Mosholder, Palm Harbor, FL (US)
Assigned to Smith & Nephew, Inc., Memphis, TN (US)
Filed by Smith & Nephew, Inc., Memphis, TN (US)
Filed on Oct. 31, 2022, as Appl. No. 17/977,577.
Application 17/009,523 is a division of application No. 14/333,125, filed on Jul. 16, 2014, granted, now 10,765,561, issued on Sep. 8, 2020.
Application 17/977,577 is a continuation of application No. 17/009,523, filed on Sep. 1, 2020, granted, now 11,484,443.
Application 14/333,125 is a continuation of application No. 12/886,088, filed on Sep. 20, 2010, granted, now 8,791,315, issued on Jul. 29, 2014.
Claims priority of provisional application 61/308,766, filed on Feb. 26, 2010.
Prior Publication US 2023/0119825 A1, Apr. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/00 (2006.01); A61F 13/00 (2024.01); A61F 13/01 (2024.01); A61F 13/05 (2024.01); A61F 13/06 (2006.01); A61M 27/00 (2006.01)
CPC A61M 1/90 (2021.05) [A61F 13/01017 (2024.01); A61F 13/01021 (2024.01); A61F 13/05 (2024.01); A61M 1/915 (2021.05); A61M 1/916 (2021.05); A61M 27/00 (2013.01); A61F 2013/00157 (2013.01); A61F 2013/00174 (2013.01); A61F 2013/00251 (2013.01); A61F 2013/00255 (2013.01); A61F 2013/00519 (2013.01); A61F 2013/00536 (2013.01); A61F 2013/0054 (2013.01); A61F 2013/0074 (2013.01); A61F 2013/00812 (2013.01); A61F 2013/00842 (2013.01); A61F 2013/00859 (2013.01); A61F 2013/00863 (2013.01); A61F 13/069 (2013.01); A61M 1/95 (2021.05); A61M 2210/1021 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of treating a wound site using negative pressure, wherein the method comprises:
placing at least a portion of a porous pad within a wound, wherein the porous pad comprises:
a thickness less than a width and a length, wherein the porous pad comprises an outer edge which forms an outer shape of the porous pad, wherein the outer shape comprises a major axis and a minor axis;
a first plurality of cuts or perforations extending through at least a portion of the thickness of the pad, the first plurality of cuts or perforations being arranged to at least partially delimit a first elliptical shape, the first plurality of cuts or perforations comprising a first cut or perforation and a second cut or perforation symmetrically disposed on an opposite side of the minor axis from the first cut or perforation with a first bridge portion disposed on the minor axis and between the first cut or perforation and the second cut or perforation;
a second plurality of cuts or perforations being arranged to at least partially delimit a second elliptical shape comprising a third cut or perforation and a fourth cut or perforation symmetrically disposed on an opposite side of the minor axis from the third cut or perforation with a second bridge portion disposed on the minor axis and between the third cut or perforation and the fourth cut or perforation, wherein the second elliptical shape is smaller than the first elliptical shape; and
a third plurality of cuts or perforations extending through at least a portion of the thickness of the pad, the third plurality of cuts or perforations comprising a fifth cut or perforation and a sixth cut or perforation symmetrically disposed on opposite sides of the minor axis, wherein the fifth cut or perforation and the sixth cut or perforation extend through the major axis with the major axis passing through the fifth and sixth cuts or perforations;
sealing the wound site with a flexible drape positioned over the wound and over the at least a portion of the porous pad; and
applying to the wound a negative pressure from a negative pressure source, wherein the negative pressure source is connected to the wound through a conduit fluidically connected between the drape and the negative pressure source.