IP Library Granted Patent US 10,188,110
Granted Patent B2
US 10,188,110 · App. 15/131,161 · Granted Jan 29, 2019

Antimicrobial hydrochloric acid catheter lock solution and method of use

Inventors: Nisha Gupta (Audobon, PA); Elaine Steinke (Morgantown, PA); Joel Rosenblatt (Pottstown, PA)
Assignee: Teleflex Medical Incorporated
A01N59/00A61K31/18A61K31/727A61L2/00A61L2/18A61L29/02A61L29/14A61L29/16A61M25/0017A61L2300/104A61L2300/106A61L2300/204A61L2300/404A61L2300/42
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Quick Facts
Patent No.
US 10,188,110
App. No.
15/131,161
Granted
Jan 29, 2019
Kind
B2
Abstract

A catheter lock solution includes a hydrochloric acid solution having a concentration of 0.3 Molar to 1.0 Molar. This hydrochloric acid solution may be used to lock a catheter and/or salvage an infected catheter.

Claims (30)

1. A method of inhibiting microbial contamination in a catheter, the method comprising the step of:

infusing a lumen of the catheter with a hydrochloric acid solution having a concentration of 0.3 Molar to 1.0 Molar, wherein the hydrochloric acid solution further includes silver sulfadiazine.

2. The method according to claim 1 , further comprising the step of:

allowing the hydrochloric acid solution to dwell within the lumen for about an hour.

3. The method according to claim 2 , further comprising the step of:

drawing the hydrochloric acid solution from the lumen following the hour dwell time.

4. The method according to claim 3 , further comprising the step of:

flushing the catheter with a saline solution following the withdrawal of the hydrochloric acid solution.

5. The method according to claim 1 , wherein the hydrochloric acid solution has a hydrochloric acid concentration of 0.3 Molar to 0.5 Molar.

6. The method according to claim 1 , wherein the hydrochloric acid solution further includes an antimicrobial agent.

7. The method according to claim 1 , wherein the silver sulfadiazine is at a concentration of at least 128 ppm.

8. The method according to claim 6 , wherein the antimicrobial agent includes Rifampin and Minocycline.

9. The method according to claim 1 , wherein the hydrochloric acid solution further includes an anti-coagulant.

10. The method according to claim 9 , wherein the anti-coagulant is heparin.

11. A method of treating a patient having a microbial contamination of an indwelling catheter, the method comprising the steps of:

infusing a lumen of the catheter with a hydrochloric acid solution having a concentration of 0.3 Molar to 1.0 Molar, wherein the hydrochloric acid solution further includes silver sulfadiazine.

12. The method according to claim 11 , further comprising the step of:

allowing the hydrochloric acid solution to dwell within the lumen for about 30 minutes.

13. The method according to claim 12 , further comprising the step of:

drawing the hydrochloric acid solution from the lumen following the hour dwell time.

14. The method according to claim 13 , further comprising the step of:

flushing the catheter with a saline solution following the withdrawal of the hydrochloric acid solution.

15. The method according to claim 11 , wherein the hydrochloric acid solution has a hydrochloric acid concentration of 0.3 Molar to 0.5 Molar.

16. The method according to claim 11 , further comprising the step of:

selecting a hydrochloric acid concentration of 0.4 Molar to 1.0 Molar in response to a biofilm of microbial contamination being present in the catheter.

17. The method according to claim 11 , wherein the hydrochloric acid solution further includes an antimicrobial agent.

18. The method according to claim 11 , wherein the silver sulfadiazine is at a concentration of at least 128 ppm.

19. The method according to claim 17 , wherein the antimicrobial agent includes Rifampin and Minocycline.

20. The method according to claim 11 , wherein the hydrochloric acid solution further includes an anti-coagulant.

21. The method according to claim 20 , wherein the anti-coagulant is heparin.

Assignments (4)
CERTIFICATE OF CONVERSION Recorded Nov 10, 2025
From: TELEFLEX MEDICAL INCORPORATED
To: TELEFLEX MEDICAL LLC
Reel/Frame 073582/0264 →
SECURITY INTEREST Recorded Oct 3, 2019
From: TELEFLEX MEDICAL INCORPORATED
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 050620/0904 →
SECURITY INTEREST Recorded Feb 21, 2017
From: TELEFLEX MEDICAL INCORPORATED
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 041761/0470 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 7, 2017
From: GUPTA, NISHA; STEINKE, ELAINE; ROSEN BLATT, JOEL
To: TELEFLEX MEDICAL INCOPORATED
Reel/Frame 041192/0650 →
Continuity (3)
Division 14618964 · Feb 10, 2015
Continuation 12849665 · Aug 3, 2010
Related Publication 20160242420A1 · Aug 25, 2016