US 12,268,805 B2
Dressing with integrated pump and releasably coupled pump actuator
Larry Tab Randolph, San Antonio, TX (US); Sara Cinnamon, San Francisco, CA (US); Stefan Foulstone, San Francisco, CA (US); Charles Hartzell, San Mateo, CA (US); Stephanie Henze, San Mateo, CA (US); Robert Lane, Larkspur, CA (US); and Colton Sanford, San Francisco, CA (US)
Assigned to KCI Licensing, Inc., San Antonio, TX (US)
Appl. No. 17/599,229
Filed by KCI Licensing, Inc., San Antonio, TX (US)
PCT Filed Mar. 26, 2020, PCT No. PCT/US2020/025035
§ 371(c)(1), (2) Date Sep. 28, 2021,
PCT Pub. No. WO2020/205448, PCT Pub. Date Oct. 8, 2020.
Claims priority of provisional application 62/826,382, filed on Mar. 29, 2019.
Prior Publication US 2022/0176032 A1, Jun. 9, 2022
Int. Cl. A61M 1/00 (2006.01); A61F 13/05 (2024.01); A61M 39/06 (2006.01)
CPC A61M 1/82 (2021.05) [A61F 13/05 (2024.01); A61M 1/684 (2021.05); A61M 1/915 (2021.05); A61M 1/962 (2021.05); A61M 39/06 (2013.01); A61M 2039/0646 (2013.01)] 14 Claims
OG exemplary drawing
 
13. A dressing for treating a tissue site with negative pressure, the dressing comprising:
a tissue interface adapted to distribute negative pressure across the tissue site;
a cover adapted to be sealed to epidermis proximate the tissue site; and
a pump, the pump comprising:
a chamber wall having a drive surface and a flexible wall extending from the drive surface, the chamber wall defining a pump chamber, the pump chamber fluidly coupled to the tissue interface;
a base extending from the flexible wall of the chamber wall, the base fluidly sealed to the cover;
a frame coupled to the base, wherein the frame comprises a first bridge, the first bridge located a distance away from the base, and the first bridge configured to cooperate with a pump actuator to releasably secure the pump actuator to the dressing; and
a cantilever spring disposed within the pump chamber, the cantilever spring coupled to the base;
wherein during operation of the pump, the drive surface is configured to be cycled between an unactuated position and an actuated position, and wherein the drive surface is oriented at a first angle with respect to the base when the drive surface is in the unactuated position; and
wherein the cantilever spring is configured to return the drive surface to the unactuated position.