US 12,109,354 B2 · Negative-pressure therapy with adjustable instillation pump chamber

Abstract

Systems, apparatuses, and methods for instilling fluid to a tissue site in a negative-pressure therapy environment are described. Illustrative embodiments may include a pneumatically-actuated instillation pump that can draw a solution from a solution source during a negative-pressure interval, and instill the solution to a dressing during a venting interval. A pneumatic actuator may be mechanically coupled to a disposable distribution system that can provide a fluid path between the solution source and a distribution component. A bacterial filter may be disposed in the fluid path between the actuator and the distribution component to prevent contamination of the actuator during operation. The distribution system may be separated from the actuator and disposed of after operation, and the actuator may be re-used.

Claims14

Dependent claims

A system for providing negative-pressure and instillation therapy, the system comprising:

a negative-pressure source configured to provide negative pressure;
a controller electrically coupled to the negative-pressure source and configured to turn on the negative-pressure source during a negative-pressure interval and turn off the negative-pressure source during a venting interval;
an actuator comprising a dosing piston and a priming piston configured to be coupled to the negative-pressure source;
and
a distribution system comprising a dosing chamber, a priming chamber fluidly coupled to the dosing chamber, a fluid port configured to be fluidly coupled to the dosing chamber and to the negative-pressure source, and a fluid fitting configured to couple the dosing piston and the priming piston to the fluid port;
wherein the actuator is configured further to open the priming chamber and expand the dosing chamber during the negative-pressure interval, and close the priming chamber and contract the dosing chamber during the venting interval.

3 more elements

Dependencies are inferred from the claim text.

Negative-pressure therapy with adjustable instillation pump chamber

Life of this patent

Negative-pressure therapy with adjustable instillation pump chamber

Life of this patent

Abstract

Claims14