US 11,883,261 B2
Medical dressing full indicator
Richard Daniel John Coulthard, Verwood (GB); and Christopher Brian Locke, Bournemouth (GB)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 16/315,995
Filed by KCI Licensing, Inc., San Antonio, TX (US)
PCT Filed Jun. 1, 2017, PCT No. PCT/US2017/035381
§ 371(c)(1), (2) Date Jan. 7, 2019,
PCT Pub. No. WO2018/013242, PCT Pub. Date Jan. 18, 2018.
Claims priority of provisional application 62/362,475, filed on Jul. 14, 2016.
Prior Publication US 2019/0159939 A1, May 30, 2019
Int. Cl. A61M 1/00 (2006.01); A61F 13/00 (2006.01); A61F 13/02 (2006.01); A61M 5/00 (2006.01); A61M 5/32 (2006.01); A61M 25/00 (2006.01); A61M 35/00 (2006.01); A61M 5/178 (2006.01)
CPC A61F 13/00068 (2013.01) [A61F 13/0216 (2013.01); A61M 1/915 (2021.05); A61M 1/964 (2021.05); A61M 1/784 (2021.05); A61M 1/985 (2021.05); A61M 2205/18 (2013.01); A61M 2205/3382 (2013.01)] 48 Claims
OG exemplary drawing
 
1. A dressing configured to treat a tissue site, comprising:
a sealing member configured to provide a sealed space at the tissue site;
an inlet port configured to be in fluid communication with the sealed space;
a vent configured to be in fluid communication between the sealed space and an atmosphere exterior to the sealed space; and
a transformable plug comprising a soluble material configured to dissolve in the presence of moisture such that the transformable plug is configured to change from a serviceable state in which the transformable plug is fluid impermeable to a deteriorated state in which the transformable plug is fluid permeable after being exposed to moisture for a pre-determined time period, the transformable plug configured to preclude fluid communication through the vent in the serviceable state and to permit fluid communication through the vent in the deteriorated state.