公开(公告)号：US20220176032A1

公开(公告)日：2022-06-09

申请号：US17599229

申请日：2020-03-26

Applicant: KCI Licensing, Inc.

Inventor： Larry Tab RANDOLPH ,  Sara CINNAMON ,  Stefan FOULSTONE ,  Charles HARTZELL ,  Stephanie HENZE ,  Robert LANE ,  Colton SANFORD

IPC: A61M1/00 ,  A61F13/02 ,  A61M39/06

Abstract: A dressing for treating a tissue site with negative pressure including a tissue interface, a cover, a chamber wall, and a base. The cover may be adapted to be sealed to epidermis proximate the tissue site. The chamber wall may define a pump chamber, wherein the pump chamber may be adapted to be fluidly coupled to the tissue interface. The base may extend from the chamber wall, wherein the base may be fluidly sealed to the cover. The dressing may include an intake valve and an exhaust valve fluidly coupled to the pump chamber. The pump chamber may be compressed to evacuate fluid from the pump chamber through the exhaust valve. The pump chamber may then be expanded to draw′ fluid through the intake valve from the tissue interface. This supplies a negative pressure to the tissue interface which may be adapted to distribute negative pressure across the tissue site.

公开(公告)号：US20220163021A1

公开(公告)日：2022-05-26

申请号：US17599097

申请日：2020-03-26

Applicant: KCI Licensing, Inc.

Inventor： Larry Tab RANDOLPH ,  Sara CINNAMON ,  Robert LANE

IPC: F04B9/04 ,  F04B45/027 ,  F16H1/16 ,  A61M1/00

Abstract: An apparatus for treating a tissue site with negative pressure having a pump and a pump actuator. The pump may include a chamber wall that may define a pump chamber. The pump actuator may include a mechanism to actuate the pump. The pump actuator may be releasably coupled to the pump. In some examples, the chamber wall may include a drive surface and the pump actuator may include a cylindrical cam having a working surface configured to engage with the drive surface of the pump. In some examples, the pump actuator may have an actuator arm configured to couple to the pump to actuate the pump. Actuation of the pump may create a negative pressure in the pump chamber that may be delivered to a tissue site.