US 12,415,027 B2
Relating to apparatus negative pressure wound therapy
Stephen Cotton, Kirkby in Ashfield (GB); and Matthew Tasker, Kirkby in Ashfield (GB)
Assigned to BRIGHTWAKE LIMITED, Kirkby in Ashfield (GB)
Filed by BRIGHTWAKE LIMITED, Kirkby in Ashfield (GB)
Filed on Nov. 9, 2023, as Appl. No. 18/505,461.
Application 18/505,461 is a continuation of application No. 16/491,855, granted, now 11,878,108, previously published as PCT/GB2018/050409, filed on Feb. 15, 2018.
Claims priority of application No. 1703806 (GB), filed on Mar. 9, 2017.
Prior Publication US 2024/0075199 A1, Mar. 7, 2024
Int. Cl. A61M 1/00 (2006.01); A61F 13/0203 (2024.01); A61F 13/0206 (2024.01); A61F 13/05 (2024.01); A61M 39/24 (2006.01)
CPC A61M 1/96 (2021.05) [A61F 13/0209 (2013.01); A61F 13/0213 (2013.01); A61F 13/05 (2024.01); A61M 1/73 (2021.05); A61M 1/74 (2021.05); A61M 1/985 (2021.05); A61M 39/24 (2013.01); A61M 2205/02 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A disposable apparatus for negative pressure wound therapy, comprising:
a source of reduced pressure;
a first chamber in fluid communication with the source of reduced pressure such that the source of reduced pressure is operable to generate a negative pressure in the first chamber;
a second chamber comprising means for establishing fluid communication with a wound;
a one-way valve located between said first chamber and said second chamber, the one-way valve permitting the passage of gas from the second chamber into the first chamber and preventing the passage of gas from the first chamber into the second chamber;
a pressure release means that prevents the negative pressure in the first chamber from exceeding a predetermined negative pressure value; and
means for detecting the negative pressure that is applied to the wound; wherein:
the source of reduced pressure is in the form of a vacuum pump occupying a volume of less than 10 cm3;
the first and second chambers are defined by housings including openings through which the first and second chambers form substantially air-tight connections with other components of the apparatus including the source of reduced pressure, the one-way valve, the pressure release means and the means for detecting the negative pressure that is applied to the wound, which air-tight connections are formed for example via interface fit or barbed connections; each of said housings being formed of a single moulded component; and
the means for detecting the negative pressure that is applied to the wound is operably coupled to the source of reduced pressure via a programmable computer processor that permits the desired level of negative pressure that is applied to the wound to be varied; and such that the source of reduced pressure is deactivated in response to the negative pressure that is applied to the wound reaching a desired level and/or the source of reduced pressure is activated in response to the negative pressure that is applied to the wound dropping below a desired level.