Granted Patent B2

US 12,636,424 · App. 17/943,834 · Granted May 26, 2026

Inventors: Justin Rice (Denver, CO); Shannon C. Ingram (Bulverde, TX); Brett L. Moore (San Antonio, TX)

Assignee: Solventum Intellectual Properties Company

A61M3/022A61F13/05A61M1/60A61M1/74A61M1/772A61M1/90A61M1/92A61M1/96A61M1/964A61M3/0202A61M3/0258A61M1/962A61M1/98A61M2205/15A61M2205/18A61M2205/3344A61M2205/3379A61M2205/50

Abstract

Claims (41)

1 . A wound therapy system comprising:

a pump;

a wound dressing configured to be applied to a wound site;

a fluid tube fluidly connecting the pump to the wound dressing; and

a controller configured to:

monitor pressure during instillation of a fluid to the wound site; and

determine a volume of the fluid instilled to the wound site by comparing pressure measurements obtained from the monitored pressure during the instillation of the fluid to the wound site to model pressure decay data.

2 . The wound therapy system of claim 1 , wherein the controller is configured to determine a volume of a fluid instilled to the wound site at each of one or more instillation events occurring during treatment of the wound site.

3 . The wound therapy system of claim 2 , wherein the controller is configured to store each of the determined volumes.

4 . The wound therapy system of claim 3 , wherein the controller is configured to monitor healing of the wound site based on the stored determined volumes.

5 . The wound therapy system of claim 1 , further comprising a source of instillation fluid, the controller further being configured to operate the pump to instill the fluid to the wound site.

6 . The wound therapy system of claim 5 , wherein the controller is configured to stop the instillation of the fluid to the wound site when a first predetermined pressure has been detected.

7 . The wound therapy system of claim 1 , wherein the controller is further configured to:

operate the pump to evacuate air from the wound site to attain a predetermined negative pressure;

upon detecting that a pressure is equal to the predetermined negative pressure, operate the pump to instill a fluid to the wound site; and

stop the instillation of fluid to the wound site upon detection that a measured pressure is equal to a predetermined target pressure.

8 . A wound therapy system comprising:

a pump;

a wound dressing configured to be applied to a wound site;

a fluid tube fluidly connecting the pump to the wound dressing;

a source of instillation fluid; and

a controller configured to:

operate the pump to instill the instillation fluid to the wound site;

monitor pressure during instillation of the instillation fluid to the wound site;

stop the operation of the pump in response to detection of a first predetermined pressure; and

determine a volume of the instillation fluid instilled to the wound site by comparing pressure measurements obtained during instillation of the instillation fluid to the wound site to model pressure decay data.

9 . The wound therapy system of claim 8 , wherein the controller is configured to obtain the pressure measurements based on the pressure monitored during the operation of the pump to instill instillation fluid to the wound site.

10 . The wound therapy system of claim 9 , wherein the controller is configured to obtain the model pressure decay data, the model pressure decay data being representative of pressure decay within a container having a volume equal to the estimated volume of the wound site as the instillation fluid is instilled into the container.

11 . The wound therapy system of claim 10 , wherein the controller is further configured to compare the pressure measurements to the model pressure decay data in real-time.

12 . The wound therapy system of claim 8 , wherein the controller is further configured to:

operate the pump to evacuate air from the wound site;

monitor pressure as air is evacuated from the wound site; and

stop operation of the pump when a predetermined negative pressure has been detected.

13 . The wound therapy system of claim 12 , wherein the controller is configured to operate the pump to instill the instillation fluid to the wound site after the predetermined negative pressure has been detected.

14 . The wound therapy system of claim 8 , wherein the controller is further configured to:

obtain an estimate of a volume of the wound site;

compare the estimated volume of the wound site to the determined volume of the instillation fluid instilled to the wound site; and

generate an alarm if the estimated volume of the wound site is not substantially the same as the determined volume of the instillation fluid instilled to the wound site.

15 . The wound therapy system of claim 8 , wherein the controller is configured to obtain an estimated volume of the wound site prior to operating the pump to instill fluid to the wound site.

16 . The wound therapy system of claim 11 , wherein an alarm is generated if the measured pressure does not correspond to the model pressure decay data.

17 . The wound therapy system of claim 8 , wherein the model pressure decay data is representative of pressure decay within a container having a known volume during instillation of a fluid into the container.

Assignments (4)

Continuity (2)

References Cited (203)