US 12,433,795 B2
Wound dressing
Bryan Greener, York (GB); and Allan Freedline, Miami Beach, FL (US)
Assigned to Smith & Nephew, Inc., Memphis, TN (US)
Filed by Smith & Nephew, Inc., Memphis, TN (US)
Filed on Nov. 14, 2022, as Appl. No. 17/986,547.
Application 17/986,547 is a continuation of application No. 16/720,621, filed on Dec. 19, 2019, granted, now 11,701,263.
Application 16/720,621 is a continuation of application No. 15/879,382, filed on Jan. 24, 2018, granted, now 10,548,776, issued on Feb. 4, 2020.
Application 15/879,382 is a continuation of application No. 15/804,780, filed on Nov. 6, 2017, abandoned.
Application 15/804,780 is a continuation of application No. 14/035,487, filed on Sep. 24, 2013, granted, now 9,820,888, issued on Nov. 21, 2017.
Application 14/035,487 is a continuation in part of application No. 13/202,974, abandoned, previously published as PCT/GB2010/000293, filed on Feb. 19, 2010.
Application 14/035,487 is a continuation in part of application No. 12/443,169, granted, now 8,680,360, issued on Mar. 25, 2014, previously published as PCT/US2007/079529, filed on Sep. 26, 2007.
Claims priority of provisional application 60/826,922, filed on Sep. 26, 2006.
Claims priority of application No. 0903032 (GB), filed on Feb. 24, 2009.
Prior Publication US 2023/0144868 A1, May 11, 2023
Int. Cl. A61F 13/00 (2024.01); A61F 13/01 (2024.01)
CPC A61F 13/01038 (2024.01) 20 Claims
OG exemplary drawing
 
1. A wound dressing, comprising:
a dressing layer comprising:
a machine direction oriented in the direction the dressing layer was produced during manufacture,
a plurality of first slits parallel to the machine direction, individual first slits comprising a first cut extending in a first direction and a second cut extending in a second direction; and
a plurality of second slits extending perpendicular to the machine direction, the second slits staggered relative to the plurality of first slits, individual second slits comprising a third cut extending in a third direction and a fourth cut extending in a fourth direction; and
a backing layer positioned over the dressing layer; and
a wound contact layer positioned beneath the dressing layer.
 
12. A wound dressing, comprising:
a dressing layer comprising:
a machine direction oriented in the direction the dressing layer was produced during manufacture,
a plurality of first slits parallel to the machine direction, individual first slits comprising a first cut extending in a first direction and a second cut extending in a second direction, and
a plurality of second slits extending in the machine direction, the second slits staggered relative to the plurality of first slits, individual second slits comprising a third cut extending in a third direction and a fourth cut extending in a fourth direction; and
a backing layer positioned over the dressing layer; and
a wound contact layer positioned beneath the dressing layer.
 
18. A method of treating a wound, comprising:
positioning a dressing layer over a tissue site, the dressing layer comprising:
a machine direction oriented in the direction the dressing layer was produced during manufacture,
a plurality of first slits parallel to the machine direction, individual first slits comprising a first cut extending in a first direction and a second cut extending in a second direction, and
a plurality of second slits extending in the machine direction, the second slits staggered relative to the plurality of first slits, individual second slits comprising a third cut extending in a third direction and a fourth cut extending in a fourth direction; and
sealing a backing layer over the dressing layer.