US 11,857,746 B2
Wound cleansing apparatus in-situ
Patrick Lewis Blott, York (GB); Bryan Greener, York (GB); Edward Yerbury Hartwell, Hull (GB); Derek Nicolini, Hull (GB); Tina Michelle Walker, York (GB); and Julian Lee-Webb, York (GB)
Assigned to Smith & Nephew PLC, Watford (GB)
Filed by Smith & Nephew PLC, Watford (GB)
Filed on Aug. 31, 2020, as Appl. No. 17/008,190.
Application 17/008,190 is a continuation of application No. 15/273,071, filed on Sep. 22, 2016, granted, now 10,758,651.
Application 15/273,071 is a continuation of application No. 14/575,968, filed on Dec. 18, 2014, granted, now 9,452,248, issued on Sep. 27, 2016.
Application 14/575,968 is a continuation of application No. 13/212,039, filed on Aug. 17, 2011, granted, now 9,446,178, issued on Sep. 20, 2016.
Application 13/212,039 is a continuation of application No. 12/940,788, filed on Nov. 5, 2010, abandoned.
Application 12/940,788 is a continuation of application No. 10/575,871, granted, now 7,964,766, issued on Jun. 21, 2011, previously published as PCT/GB2004/004549, filed on Oct. 28, 2004.
Claims priority of application No. 0325129 (GB), filed on Oct. 28, 2003.
Prior Publication US 2021/0046224 A1, Feb. 18, 2021
Int. Cl. A61M 3/02 (2006.01); A61F 13/00 (2006.01); A61M 1/00 (2006.01); A61M 35/00 (2006.01); A61F 13/02 (2006.01); A61M 27/00 (2006.01)
CPC A61M 3/0229 (2013.01) [A61F 13/00068 (2013.01); A61F 13/0206 (2013.01); A61F 13/0213 (2013.01); A61F 13/0216 (2013.01); A61F 13/0259 (2013.01); A61M 1/77 (2021.05); A61M 1/81 (2021.05); A61M 1/82 (2021.05); A61M 1/85 (2021.05); A61M 1/915 (2021.05); A61M 1/92 (2021.05); A61M 1/962 (2021.05); A61M 1/985 (2021.05); A61M 3/022 (2014.02); A61M 3/0216 (2014.02); A61M 35/30 (2019.05); A61F 2013/00357 (2013.01); A61M 1/75 (2021.05); A61M 1/772 (2021.05); A61M 1/916 (2021.05); A61M 27/00 (2013.01); A61M 2205/075 (2013.01); A61M 2205/106 (2013.01); A61M 2205/7518 (2013.01); A61M 2205/8206 (2013.01); Y10T 29/49826 (2015.01)] 7 Claims
OG exemplary drawing
 
1. A negative pressure wound therapy system, comprising:
a wound dressing configured to cover and protect a wound, the wound dressing comprising:
a backing layer;
a wound contact layer configured to contact the wound; and
an absorbent material positioned between the wound contact layer and the backing layer; and
a negative pressure source configured to apply negative pressure to the wound, the negative pressure source being integral with the wound dressing, wherein the negative pressure source comprises:
a manually compressible chamber; and
a one-way valve;
wherein a compressive force applied to the manually compressible chamber moves fluid through the one-way valve and release of the compressive force on the manually compressible chamber creates a negative pressure at the wound.