US 11,903,798 B2
Reduced pressure apparatus and methods
Ben Alan Askem, Leeds (GB); Sarah Jenny Collinson, Hull (GB); John Cowan-Hughes, Bristol (GB); Christopher John Fryer, York (GB); Tom Moy, Norwish (GB); Paul Mullen, Bristol (GB); Derek Nicolini, Hull (GB); Neil Pryor, Bristol (GB); Philip Walsh, Bristol (GB); and Ian Binder, Chippenham (GB)
Assigned to Smith & Nephew PLC, Watford (GB)
Filed by Smith & Nephew PLC, Watford (GB)
Filed on Aug. 9, 2021, as Appl. No. 17/397,860.
Application 17/397,860 is a continuation of application No. 16/047,786, filed on Jul. 27, 2018, granted, now 11,129,931.
Application 16/047,786 is a continuation of application No. 14/385,136, granted, now 10,046,096, issued on Aug. 14, 2018, previously published as PCT/IB2013/000847, filed on Mar. 12, 2013.
Claims priority of provisional application 61/609,905, filed on Mar. 12, 2012.
Prior Publication US 2021/0361854 A1, Nov. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 13/02 (2006.01); A61M 1/00 (2006.01); A61F 13/00 (2006.01)
CPC A61F 13/0246 (2013.01) [A61F 13/00042 (2013.01); A61M 1/732 (2021.05); A61M 1/915 (2021.05); A61M 1/962 (2021.05); A61M 1/964 (2021.05); A61F 2013/00536 (2013.01); A61M 1/966 (2021.05); A61M 1/982 (2021.05); A61M 1/985 (2021.05); A61M 2205/0216 (2013.01); A61M 2205/42 (2013.01); A61M 2205/80 (2013.01); A61M 2205/82 (2013.01); A61M 2205/8206 (2013.01); A61M 2205/8293 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A negative pressure wound therapy device comprising:
a wound dressing including a backing layer having an opening and adapted for close contact with an outer periphery of a wound site; and
a pump unit including a housing and a pump,
wherein the housing includes
a joint portion joined to the wound dressing, and
an inlet communicating with the pump,
wherein the housing is adapted for communicating with a closed space formed by the backing layer and the wound site via the opening of the backing layer and the inlet of the housing,
wherein the negative pressure wound therapy device further includes an absorbing member adapted for being disposed in the closed space to absorb a liquid, and an exudate passage preventing member with the absorbing member interposed between the exudate passage preventing member and the opening, and
wherein the absorbing member is configured to absorb and store exudate from the wound site.