IP Library Granted Patent US 9,386,947
Granted Patent B2
US 9,386,947 · App. 14/921,140 · Granted Jul 12, 2016

System for combined transcutaneous blood gas monitoring and negative pressure wound treatment

Inventor: Royce W. Johnson (Green Cove Springs, FL)
Assignee: KCI Licensing, Inc.
A61B5/14542A61B5/1468A61B5/445A61B5/6834A61M1/0088
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Quick Facts
Patent No.
US 9,386,947
App. No.
14/921,140
Granted
Jul 12, 2016
Kind
B2
Abstract

A system for administering negative pressure therapy to a wound includes a screen adapted to be positioned at the wound. A reduced pressure source is in fluid communication with the screen, and a Hood gas transducer is exposed to a reduced pressure provided by the reduced pressure source. The reduced pressure supplied by the reduced pressure source induces hyperperfusion of a blood gas at the wound.

Claims (34)

1. A system for administering negative pressure therapy to a wound, the system comprising:

a screen adapted to be positioned at the wound;

a reduced pressure source comprising a pump in fluid communication with the screen;

a blood gas transducer exposed to a reduced pressure provided by the reduced pressure source; and

wherein the reduced pressure supplied by the reduced pressure source induces hyperperfusion of a blood gas at the wound.

2. The system of claim 1 , wherein the blood gas transducer is an electrochemical blood gas transducer.

3. The system of claim 1 , further comprising:

a cover adapted to be positioned over the screen at the wound to maintain the reduced pressure at the wound; and

wherein the blood gas transducer is adapted to be positioned beneath the cover.

4. The system of claim 1 , further comprising:

a blood gas data acquisition device in communication with the blood gas transducer to capture a measure of gas pressure of the blood gas.

5. The system of claim 4 , wherein the blood gas data acquisition device is further capable of estimating an arterial partial pressure of the blood gas using the measured gas pressure.

6. The system of claim 4 , wherein the blood gas is oxygen.

7. The system of claim 4 , wherein the blood gas is carbon dioxide.

8. The system of claim 4 , wherein the blood gas transducer is electrically connected to the blood gas data acquisition device by an electrical cable.

9. The system of claim 8 , wherein the reduced pressure source is in fluid communication with the blood gas transducer via a hose, the hose and electrical cable forming a unitary hose and cable pair.

10. The system of claim 4 , further comprising:

a transducer interface module operable to provide fluid communication between the reduced pressure source and the blood gas transducer, the transducer interface module further operable to provide electrical communication between the blood gas data acquisition device and the blood gas transducer.

11. The system of claim 10 , wherein the transducer interface module comprises a male and female interference pair.

12. The system of claim 11 , further comprising:

a hydrophobic membrane filter disposed in a male portion of the male and female interference pair.

13. The system of claim 1 , further comprising:

a hydrophobic membrane positioned between the blood gas transducer and the reduced pressure source.

14. The system of claim 1 , wherein the blood gas transducer is at least partially disposed in the screen.

15. The system of claim 1 , wherein the screen is a porous foam.

16. A transcutaneous blood gas monitoring system comprising:

a blood gas transducer unit adapted to be disposed adjacent a tissue site, the blood gas transducer unit having an electrochemical blood gas transducer;

a reduced pressure source comprising a pump in fluid communication with the blood gas transducer unit to expose the tissue site and the electrochemical blood gas transducer to a reduced pressure to induce hyperperfusion of a blood gas at the tissue site; and

a blood gas data acquisition device in communication with the blood gas transducer unit to capture a measure of gas pressure of the blood gas to estimate an arterial partial pressure of the blood gas.

17. The system of claim 16 , wherein the blood gas is oxygen.

18. The system of claim 16 , wherein the blood gas is carbon dioxide.

19. The system according to claim 16 further comprising a hydrophobic membrane filter positioned between the blood gas transducer unit and the reduced pressure source.

20. The system according to claim 16 , wherein the tissue site is intact skin.

21. The system according to claim 16 , wherein the tissue site is a wound undergoing negative pressure therapy.

Assignments (5)
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Nov 7, 2019
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: KCI USA, INC.; KCI LICENSING, INC.
Reel/Frame 050966/0547 →
RELEASE OF SECURITY INTEREST REEL/FRAME 040098/0268 Recorded Feb 8, 2017
From: WILMINGTON TRUST
To: KCI USA, INC.
Reel/Frame 041666/0320 →
LIMITED THIRD LIEN INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Oct 7, 2016
From: KCI USA, INC.; LIFECELL CORPORATION; KCI LICENSING, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 040291/0237 →
SECOND LIEN SECURITY AGREEMENT Recorded Sep 21, 2016
From: KCI USA, INC.; LIFECELL CORPORATION; KCI LICENSING, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 040098/0268 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 23, 2015
From: JOHNSON, ROYCE
To: KCI LICENSING, INC.
Reel/Frame 036871/0043 →
Continuity (6)
Division 12424390 · Apr 15, 2009
Continuation 10867990 · Jun 15, 2004
Continuation 10085321 · Feb 28, 2002
Continuation In Part 09579755 · May 26, 2000
Provisional Application 60136293 · May 27, 1999
Related Publication 20160038064A1 · Feb 11, 2016