SYSTEMS AND METHODS FOR SUBCUTANEOUS ADMINISTRATION OF REDUCED PRESSURE EMPLOYING RECONFIGURABLE LUMENS

• US 20120123323A1
• Filed: 11/09/2011
• Published: 05/17/2012
• Est. Priority Date: 11/17/2010
• Status: Active Grant

• Current Assignee: Solventum Intellectual Properties Company (Solventum Corp.)
• Original Assignee: KCI Licensing Incorporated (3M Company)
• Inventors: Kagan, Jonathan, Cornet, Douglas A.
• Granted Patent: US 9,180,233 B2
• Time in Patent Office: Days
• US Class Current: 604/35
• CPC Class Codes: A61M 1/74 Suction control underwater drainage A61M1/61
• CPC Class Codes: A61M 1/743 by changing the cross-section of the line, e.g. flow regulating valves A61M1/7413 takes precedence
• CPC Class Codes: A61M 1/85 with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208
• CPC Class Codes: A61M 1/87 Details of the aspiration tip, not otherwise provided for
• CPC Class Codes: A61M 1/916 specially adapted for deep wounds
• CPC Class Codes: A61M 1/92 with liquid supply means
• CPC Class Codes: A61M 1/96 Suction control thereof
• CPC Class Codes: A61M 2005/1403 Flushing or purging
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2209/10 Equipment for cleaning
• CPC Class Codes: A61M 2210/02 Bones

Abstract

Systems, method, and devices are disclosed that involve reconfiguring lumens or unblocking lumens relative to a blockage to maintain flow of reduced pressure to a subcutaneous tissue site. In one instance, a multi-lumen applicator includes an applicator body having a distal end and a proximal end and formed with a plurality of apertures for receiving fluid from the tissue site and for delivering reduced pressure, a first lumen fluidly coupled to the plurality of apertures, a first activation member having at least a closed position and a open position, and a second lumen fluidly coupled to the plurality of apertures but for the first activation member being in closed position. The configuration is such that when the first activation member is moved to the open position, the second lumen is fluidly coupled to the plurality of apertures. Other systems, methods, and devices are disclosed.

Claims

1. A system for providing reduced pressure to a subcutaneous tissue site and removing fluids from the subcutaneous tissue site, the system comprising:

a multi-lumen applicator for distributing reduced pressure at the subcutaneous tissue site;

a reduced-pressure source fluidly coupled to the multi-lumen applicator;

a purging unit fluidly coupled to the multi-lumen applicator; and

wherein the multi-lumen applicator comprises;

an applicator body formed with a plurality of apertures,

a first lumen initially fluidly configured to receive fluids from the tissue site through the plurality of apertures,

a second lumen initially configured to provide a purging fluid to the first lumen, and

a first frangible member disposed between the first lumen and second lumen, wherein the first frangible member is configured to rupture when exposed to a pressure differential greater than a first threshold pressure differential whereby at least a portion of the second lumen and a portion of the first lumen become fluidly coupled.

2. The system of claim 1, wherein the multi-lumen applicator further comprises:

a second frangible member operable to rupture when exposed to a pressure differential greater than a second threshold pressure differential; and

a third lumen fluidly coupled to the plurality of apertures but for the second frangible member, whereby when the second frangible member ruptures, the third lumen is fluidly coupled to the plurality of apertures.

3. A system for providing reduced pressure to a subcutaneous tissue site, the system comprising:

a multi-lumen applicator for distributing reduced pressure at the subcutaneous tissue site;

a reduced-pressure source fluidly coupled to the multi-lumen applicator;

a purging unit fluidly coupled to the multi-lumen applicator; and

wherein the multi-lumen applicator comprises;

an applicator body formed with a plurality of apertures,

a first lumen initially fluidly configured to receive fluids from the tissue site through the plurality of apertures,

a second lumen initially configured to provide a purging fluid to the first lumen, and

an activation member disposed between the first lumen and second lumen, wherein the activation member is configured to fluidly couple, when activated, at least a portion of the second lumen and a portion of the first lumen whereby at least a portion of the second lumen transports the fluids from the tissue site over at least a portion of the second lumen.

4. The system of claim 3, wherein the first activation member comprises a first frangible member that is activated when exposed to a pressure differential greater than a first threshold pressure differential.

5. The system of claim 3, wherein the first activation member comprises a first frangible member that is activated when exposed to a fluid for greater than a first threshold time.

6. The system of claim 3, wherein the first activation member comprises a first frangible member that is activated when exposed to a liquid for greater than a first threshold time.

7. The system of claim 3, wherein the first activation member comprises a pressure-activated valve.

8. The system of claim 3, wherein the first activation member comprises a remotely-activated valve.

9. The system of claim 3, wherein the multi-lumen applicator further comprises:

a third lumen initially configured to provide a purging fluid to the first lumen, and

a second activation member disposed between the third lumen and the first lumen, wherein the second activation member is configured, when activated, to fluidly couple at least a portion of the third lumen to at least a portion the first lumen to transport the fluids from the tissue site over at least a portion of the second lumen.

10. (canceled)

11. (canceled)

12. (canceled)

13. A multi-lumen applicator for delivering reduced pressure to a tissue site and receiving fluids, the multi-lumen applicator comprising:

an applicator body having a distal end and a proximal end and formed with a plurality of apertures proximate the distal end for receiving fluid from the tissue site and for delivering reduced pressure;

a first lumen fluidly coupled to the plurality of apertures;

a first activation member having at least a closed position and an open position; and

a second lumen fluidly coupled to the plurality of apertures when the first activation member is in the open position but not when the first activation member is in the closed position, whereby when the first activation member is moved to the open position, the second lumen is fluidly coupled to the plurality of apertures.

14. The multi-lumen applicator of claim 13, wherein the first activation member comprises a first frangible member that ruptures when activated.

15. The multi-lumen applicator of claim 14, wherein the first frangible member is activated when a pressure differential at the first frangible member exceeds a first threshold pressure differential.

16. The multi-lumen applicator of claim 14, wherein the first frangible member is activated when exposed to liquid for greater than a threshold time.

17. A method for providing reduced pressure to a subcutaneous tissue site, the method comprising:

providing a multi-lumen applicator for distributing reduced pressure at the subcutaneous tissue site;

wherein the multi-lumen applicator comprises;

an applicator body formed with a plurality of apertures, a purge lumen, and a first lumen fluidly coupled to the plurality of apertures and to the purge lumen,

an activation member operable to move from a closed position to an open position when activated, and

a second lumen formed in the applicator body and fluidly coupled to the purge lumen when the activation member is in the open position;

disposing the multi-lumen applicator proximate to the subcutaneous tissue site;

removing fluids from the subcutaneous tissue site through the first lumen;

activating the activation member of the multi-lumen applicator such that the second lumen is fluidly coupled to the purge lumen; and

removing fluids from the subcutaneous tissue site at least partially through the second lumen after activating the activation member.

18. The method of claim 17, wherein the activation member comprises a frangible member that ruptures when exposed to a pressure differential greater than a first threshold pressure differential.

19. The method of claim 17, wherein the activation member comprises a frangible member that ruptures when exposed to a fluid for more than a first threshold time.

20. The method of claim 17, wherein the activation member comprises a frangible member that ruptures when exposed to a liquid for more than a first threshold time.

21. A multi-lumen applicator for delivering reduced pressure to a tissue site and receiving fluids, the multi-lumen applicator comprising:

an applicator body having a distal end and a proximal end and formed with a first plurality of apertures proximate to the distal end for receiving fluid and a second plurality of apertures proximate the distal end for receiving fluid from the tissue site and for delivering reduced pressure;

a first lumen fluidly coupled to the first plurality of apertures;

a second lumen fluid coupled to the second plurality of apertures; and

a first plurality of activation members coupled to the second plurality of apertures, wherein the first plurality of activation members is operable to move from a closed position to an open position when activated to allow flow.

22. The multi-lumen applicator of claim 21, wherein the first plurality of activation members comprise a plurality of frangible members and wherein the frangible members rupture when exposed to a pressure differential greater than a threshold pressure differential, whereby the second plurality of apertures are operable to receive liquids.

23. The multi-lumen applicator of claim 21, wherein the first plurality of activation members comprise a plurality of frangible members and wherein the frangible members rupture when exposed to a fluid greater than a threshold time, whereby the second plurality of apertures are operable to receive fluids from the tissue site.

24. The multi-lumen applicator of claim 21, wherein the first plurality of activation members comprise a plurality of frangible members and wherein the frangible members rupture when exposed to a liquid greater than a threshold time, whereby the second plurality of apertures are operable to receive fluids from the tissue site.

25-48. -48. (canceled)