US 12,121,645 B2
Method and system for removing exudates from a wound site
Landy Aaron Toth, Newton, PA (US)
Assigned to CONVATEC TECHNOLOGIES INC., Las Vegas, NV (US)
Filed by CONVATEC TECHNOLOGIES INC., Las Vegas, NV (US)
Filed on Aug. 17, 2020, as Appl. No. 16/995,001.
Application 16/995,001 is a continuation of application No. 13/992,623, granted, now 10,780,200, previously published as PCT/US2011/063686, filed on Dec. 7, 2011.
Claims priority of provisional application 61/421,012, filed on Dec. 8, 2010.
Claims priority of provisional application 61/421,006, filed on Dec. 8, 2010.
Prior Publication US 2020/0376177 A1, Dec. 3, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/00 (2006.01); A61M 27/00 (2006.01)
CPC A61M 1/74 (2021.05) [A61M 1/68 (2021.05); A61M 1/78 (2021.05); A61M 1/82 (2021.05); A61M 1/96 (2021.05); A61M 1/962 (2021.05); A61M 1/982 (2021.05); A61M 1/67 (2021.05); A61M 1/80 (2021.05); A61M 27/00 (2013.01); A61M 2205/075 (2013.01); A61M 2205/8206 (2013.01); A61M 2209/088 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vacuum wound therapy apparatus comprising:
a sealed chamber including a first wall, a second wall, a first seal, and a second seal, wherein the first wall and the second wall define the sealed chamber;
a cavity disposed within the sealed chamber, the cavity configured for fluid communication with a wound site and with a reservoir that receives and holds wound exudate, the cavity including an input for communication with the wound site, wherein the first seal is located at the input, an output for communication with the reservoir, wherein the second seal is located at the output, and a first non-rigid, deformable wall in fluid communication with the sealed chamber, the first non-rigid, deformable wall opposing at least one of the first wall and the second wall; the cavity having a first state being deformed and a second state being non-deformed or less deformed than the first state, wherein the cavity is adapted to draw exudate from the wound site into the cavity and to manage exudate flow between the wound site and the reservoir during transition of the cavity between the first state and the second state;
a piezoelectric device located at the first wall and in fluid communication with the sealed chamber, wherein the piezoelectric device is adapted to deform the first non-rigid deformable wall of the cavity in the direction of the second wall to transition the cavity from the second state to the first state, wherein the piezoelectric device provides a pressure within the sealed chamber to cause the first non-rigid deformable wall to be deformed in the first state and to compress the cavity.