Granted Patent B2

US 12,458,741 · App. 18/239,624 · Granted Nov 4, 2025

Inventors: Christopher Brian Locke (San Antonio, TX); James A. Luckemeyer (San Antonio, TX); Timothy Mark Robinson (San Antonio, TX)

Assignee: Solventum Intellectual Properties Company

A61M1/74A61M1/77A61M1/85A61M1/92A61M3/0201A61M3/0202A61M3/022A61M3/0254A61M37/00A61F13/05A61M1/743A61M1/96A61M1/982A61M2205/123A61M2205/128A61M2205/3334A61M2205/3337A61M2205/3382A61M2205/50

Abstract

Claims (20)

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

a cartridge having a first chamber, a second chamber, and a reservoir of instillation fluid disposed in the second chamber;

a diaphragm disposed in the cartridge between the first chamber and the second chamber, the diaphragm operable to move between a charge position and a discharge position in response to a level of negative pressure in the second chamber;

a pressure sensing port fluidly coupled to the second chamber; and

a controller coupled to the pressure sensing port and configured to determine the level of negative pressure in the second chamber.

2 . The system of claim 1 , further comprising a fluid passage in fluid communication with the reservoir of instillation fluid.

3 . The system of claim 1 , further comprising a pump configured to be fluidly coupled to the second chamber to supply negative pressure to the second chamber.

4 . The system of claim 3 , wherein the controller is configured to determine a level of negative pressure provided by the pump.

5 . The system of claim 1 , wherein the controller is configured to calculate an amount of instillation fluid instilled based on the level of negative pressure in the second chamber.

6 . The system of claim 5 , wherein the controller is configured to control a supply of negative pressure to the second chamber to maintain the level of negative pressure in the second chamber if the amount of instillation fluid instilled is calculated to be less than a therapeutic dose.

7 . The system of claim 5 , wherein the controller is configured to control a supply of negative pressure to the second chamber and to start supplying negative pressure if the amount of instillation fluid instilled is calculated to be less than a therapeutic dose.

8 . The system of claim 7 , wherein the controller is configured to stop supplying negative pressure if the amount of instillation fluid instilled is calculated to be equal to or greater than the therapeutic dose.

9 . The system of claim 1 , wherein the diaphragm comprises a piston.

10 . The system of claim 1 , wherein the diaphragm comprises a moveable barrier.

11 . The system of claim 1 , further comprising a vent fluidly coupled to the first chamber.

12 . The system of claim 1 , wherein the reservoir of instillation fluid is sealed in the cartridge.

13 . The system of claim 1 , wherein a portion of the diaphragm is operable to compress the reservoir of instillation fluid in response to application of negative pressure.

14 . The system of claim 2 , further comprising:

a calibrated orifice disposed in the fluid passage; and

an occluder in fluid communication with the fluid passage.

Assignments (2)

Continuity (4)

References Cited (205)