US 12,458,540 B2
Negative pressure wound dressing management system
Stephen Bishop, Deeside (GB); Duncan Gilding, Deeside (GB); Bryony Lee, Deeside (GB); and Shauna Powell, Deeside (GB)
Assigned to CONVATEC TECHNOLOGIES INC., Las Vegas, NV (US)
Filed by CONVATEC TECHNOLOGIES INC., Las Vegas, NV (US)
Filed on Aug. 11, 2020, as Appl. No. 16/989,996.
Application 16/989,996 is a continuation of application No. 16/099,999, granted, now 10,779,993, previously published as PCT/US2017/031817, filed on May 9, 2017.
Claims priority of provisional application 62/370,667, filed on Aug. 3, 2016.
Claims priority of application No. 1608099.6 (GB), filed on May 9, 2016.
Prior Publication US 2020/0368073 A1, Nov. 26, 2020
Int. Cl. A61F 13/05 (2024.01); A61F 13/0203 (2024.01); A61M 1/00 (2006.01)
CPC A61F 13/05 (2024.01) [A61F 13/022 (2013.01); A61M 1/73 (2021.05); A61M 1/912 (2021.05); A61M 1/915 (2021.05); A61M 1/982 (2021.05); A61M 1/984 (2021.05); A61M 1/985 (2021.05); A61M 2205/18 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wound exudate management system, comprising:
a pump for generating negative pressure;
a flexible connector configured to be connected to the pump, the flexible connector including a flexible connector aperture;
an upper adhesive including an upper adhesive aperture, wherein the flexible connector is adhered to the upper adhesive and the flexible connector aperture is aligned with the upper adhesive aperture;
a backing layer adhesive including a backing layer adhesive aperture;
a dressing for covering and protecting a wound, the dressing comprising:
a wound contact layer positioned between the wound and at least one layer of absorbent material, the wound contact layer capable of absorbing exudate and transmitting exudate to the absorbent material, a backing layer including a backing layer aperture wherein the upper layer adhesive is adhered to one side of backing layer and the backing layer adhesive is adhered to another side of the backing layer, wherein the upper adhesive aperture, the backing layer aperture, and the backing layer adhesive aperture are aligned to enable fluid communication to the at least one layer of absorbent material, and a pressure dispersing layer adjacent and in contact with the backing layer, the at least one layer of absorbent material positioned between the wound contact layer and the pressure dispersing layer, wherein the pressure dispersing layer serves to distribute exudate and negative pressure laterally over the dressing, a thermoplastic spun lace layer connected to the pressure dispersing layer and positioned between the pressure dispersing layer and the at least one layer of absorbent material, and a nonwoven spun lace layer connected and stitchbonded to the wound contact layer and positioned between the at least one layer of absorbent material and the wound contact layer, and an adhesive layer adjacent to and in contact with the wound contact layer, the adhesive layer including a perimetral shape having a central aperture to enable the wound to be in fluid communication with the wound contact layer;
a tube connecting the pump and the dressing, the tube having an interior lumen for placing the pump and the dressing in fluid communication via the interior lumen; and
a one-way valve in-line between the pump and the dressing to maintain a negative pressure within the dressing when the pump is disconnected from the tube;
wherein the dressing comprises an envelope structure formed by joined peripheral portions of the thermoplastic spun lace layer and the nonwoven spun lace layer; and
wherein the at least one layer of absorbent material is disposed within the envelope structure.