REDUCED-PRESSURE TREATMENT SYSTEMS AND METHODS EMPLOYING A FLUIDLY ISOLATED PUMP CONTROL UNIT

• US 20130190707A1
• Filed: 03/12/2013
• Published: 07/25/2013
• Est. Priority Date: 05/18/2010
• Status: Active Grant

• Current Assignee: Solventum Intellectual Properties Company (Solventum Corp.)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Locke, Christopher Brian, Tout, Aidan Marcus, Robinson, Timothy Mark
• Granted Patent: US 10,434,226 B2
• Time in Patent Office: Days
• US Class Current: 604/319
• CPC Class Codes: A61M 1/71 Suction drainage systems containers therefor A61M1/60, A61M1/64; negative pressure wound therapy systems A61M1/90
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/80 Suction pumps A61M1/64, A61M1/71, A61M60/00 take precedence
• CPC Class Codes: A61M 1/82 Membrane pumps, e.g. bulbs
• CPC Class Codes: A61M 1/96 Suction control thereof
• CPC Class Codes: A61M 1/964 having venting means on or near the dressing
• CPC Class Codes: A61M 1/982 with means for detecting level of collected exudate
• CPC Class Codes: A61M 2205/11 with means for preventing cross-contamination when used for multiple patients
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2205/8262 connectable to external power source, e.g. connecting to automobile battery through the cigarette lighter
• CPC Class Codes: Y10T 137/3109 Liquid filling by evacuating container

Abstract

Systems, devices, and methods for treating a tissue site on a patient with reduced pressure are presented. In one instance, a reduced-pressure treatment device to treat a tissue site with reduced pressure may include a pump control unit fluidly separate from a collection unit. Pump energy may be provided by the pump control unit to deflect one or more diaphragms within the collection unit to create reduced pressure. Other systems, devices, and methods are presented.

Claims

1. A reduced-pressure treatment device for applying a reduced pressure to a tissue site, the reduced-pressure treatment device comprising:

a fluid reservoir;

a pump head fluidly coupled to the fluid reservoir and comprising at least one diaphragm; and

a pump control unit magnetically coupled to the pump head;

wherein the pump control unit is adapted to actuate the diaphragm and measure a displacement of the diaphragm.

2. The reduced-pressure treatment device of claim 1, wherein the pump control unit comprises an electromagnet to actuate the at least one diaphragm.

3. The reduced-pressure treatment device of claim 1, wherein:

the pump control unit comprises an electromagnet to actuate the at least one diaphragm; and

the at least one diaphragm comprises a metal component.

4. The reduced-pressure treatment device of claim 1, wherein the pump head provides reduced pressure directly to the fluid reservoir.

5. The reduced-pressure treatment device of claim 1, further comprising a reduced-pressure delivery conduit fluidly coupled to the pump head so that fluid from the tissue site enters the pump head before entering the fluid reservoir.

6. The reduced-pressure treatment device of claim 1, further comprising a reduced-pressure delivery conduit fluidly coupled to the pump head so that fluid from the tissue site enters the fluid reservoir before entering the pump head.

7. The reduced-pressure treatment device of claim 1, further comprising a first one-way valve forming an input to the pump head, and a second one-way valve forming an outlet from the pump head.

8. The reduced-pressure treatment device of claim 1, further comprising a membrane forming a portion of the fluid reservoir, the membrane being vapor-permeable.

9. The reduced-pressure treatment device of claim 1, further comprising:

an air-movement device positioned in the pump control unit;

a membrane forming a portion of the fluid reservoir, the membrane being vapor-permeable;

a cover coupled to the fluid reservoir adjacent to the membrane, the cover having an air-movement diaphragm; and

wherein the air-movement device is configured to cause the air-movement diaphragm to move, causing air to move against the membrane.

10. The reduced-pressure treatment device of claim 1, further comprising:

a fan positioned in the pump control unit; and

a membrane forming a portion of the fluid reservoir, the membrane being vapor-permeable;

wherein the fan is adapted to move air against the membrane.

11. A reduced-pressure treatment system for treating a tissue site, the system comprising:

a manifold having a plurality of flow channels therein and adapted to be placed proximate to the tissue site;

a sealing member adapted to be placed over the tissue site and the manifold;

a fluid reservoir;

a pump head fluidly coupled to the fluid reservoir and comprising at least one diaphragm, the pump head adapted to be fluidly coupled to the manifold; and

a pump control unit magnetically coupled to the pump head;

wherein the pump control unit is adapted to actuate the diaphragm and measure a displacement of the diaphragm.

12. The reduced-pressure treatment system of claim 11, wherein the pump control unit comprises an electromagnet to actuate the at least one diaphragm.

13. The reduced-pressure treatment system of claim 11, wherein:

the pump control unit comprises an electromagnet to actuate the at least one diaphragm; and

the at least one diaphragm comprises a metal component.

14. The reduced-pressure treatment system of claim 11, wherein the pump head provides reduced pressure directly to the fluid reservoir.

15. The reduced-pressure treatment system of claim 11, further comprising a reduced-pressure delivery conduit fluidly coupled to the pump head so that fluid from the tissue site enters the pump head before entering the fluid reservoir.

16. The reduced-pressure treatment system of claim 11, further comprising a reduced-pressure delivery conduit fluidly coupled to the pump head so that fluid from the tissue site enters the fluid reservoir before entering the pump head.

17. The reduced-pressure treatment system of claim 11, further comprising a first one-way valve forming an input to the pump head, and a second one-way valve forming an outlet from the pump head.

18. The reduced-pressure treatment system of claim 11, further comprising a membrane forming a portion of the fluid reservoir, the membrane being vapor-permeable.

19. The reduced-pressure treatment system of claim 11, further comprising:

an air-movement device positioned in the pump control unit;

a membrane forming a portion of the fluid reservoir, the membrane being vapor-permeable;

a cover coupled to the fluid reservoir adjacent to the membrane, the cover having an air-movement diaphragm; and

wherein the air-movement device is configured to cause the air-movement diaphragm to move, causing air to move against the membrane.

20. The reduced-pressure treatment system of claim 11, further comprising:

a fan positioned in the pump control unit; and

a membrane forming a portion of the fluid reservoir, the membrane being vapor-permeable;

wherein the fan is adapted to move air against the membrane.

21. A reduced-pressure treatment device for use with a system for treating a tissue site on a patient with reduced pressure, the reduced-pressure treatment device comprising:

a fluid reservoir;

a pump head fluidly coupled to the fluid reservoir and comprising at least two diaphragms; and

a pump control unit coupled to the pump head;

wherein the pump control unit is adapted to actuate at least one of the at least two diaphragms and measure a displacement of at least one of the at least two diaphragms.