Method and system for cleaning and reusing a cannula

• US 6,616,771 B2
• Filed: 11/30/2001
• Issued: 09/09/2003
• Est. Priority Date: 11/30/2001
• Status: Active Grant

• Current Assignee: Baxter Corporation Englewood (Baxter International Inc.)
• Original Assignee: Forhealth Technologies Incorporated (Baxter International Inc.)
• Inventors: Tribble, Dennis, Osborne, Joel A., Aven, William C.
• Primary Examiner(s): EL ARINI, ZEINAB
• Application Number:
  US09/999,188
• Publication Number:
  US 20030102012A1
• Time in Patent Office: 648 Days
• Field of Search: 134/1, 134/18, 134/22.1, 134/22.11, 134/22.12, 134/22.18, 134/23, 134/22.14, 134/24, 134/22.19, 134/26, 134/57.R, 134/61, 134/66, 134/80, 134/170, 134/186
• US Class Current: 134/18
• CPC Class Codes: A61B 90/70 Cleaning devices specially adapted for surgical instruments
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61M 5/001 Apparatus specially adapted for cleaning or sterilising syringes or needles
• CPC Class Codes: B08B 3/04 Cleaning involving contact with liquid
• CPC Class Codes: B08B 9/00 Cleaning hollow articles by methods or apparatus specially adapted thereto B08B6/00 takes precedence

Abstract

A computer-implemented method and system for cleaning a contaminated cannula so that it may be reused includes moving the contaminated cannula from a drug reconstitution station where the cannula is used to prepare a drug solution into a first rinsing station where the cannula is cleaned. A database is referred to to determine what drug solution the cannula has been contaminated with, and to determine a first amount of cleaning fluid that needs to be passed internally through the cannula, and a second amount of cleaning fluid that needs to be passed externally about the cannula so that there is effectively no contaminant remaining inside and outside of the cannula. The first amount of cleaning fluid is passed internally through the cannula. The second amount of cleaning fluid is passed externally about the cannula. After the cannula is cleaned, the cannula is moved to the drug reconstitution station to prepare another drug solution.

Claims

1. A computer-implemented method for cleaning a contaminated reusable cannula, comprising the steps of:

moving a particular cannula into a first rinsing station;

referencing a database to determine what drug solution the cannula has been contaminated with;

referencing the database to determine a first amount of cleaning fluid that needs to be passed internally through the cannula so that there is effectively no contaminant remaining inside of the cannula;

referencing the database to determine a second amount of cleaning fluid that needs to be passed externally about the cannula so that there is effectively no contaminant remaining outside of the cannula;

passing at least the first amount of cleaning fluid internally through the cannula; and

passing at least the second amount of cleaning fluid externally about the cannula.

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

updating the database to associate use of the drug solution with the cannula.

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

updating the database to increment a count of a number of uses of the cannula.

4. The method according to claim 1, wherein the drug solution has a concentration, and wherein the first and second amounts of cleaning fluid are based on the concentration.

5. The method according to claim 1, wherein the determining steps each comprise a look-up into an electronic table of data.

6. The method according to claim 1, wherein the amount of fluid determined in said determining steps vary depending upon the drug solution that the cannula has been contaminated with.

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

moving the cleaned cannula into a second drug reconstitution station.

8. The method according to claim 7, further comprising the step of:

contaminating the cannula with a second drug solution by injecting the cannula into an injectable vial to reconstitute the second drug solution at a second station.

9. The method according to claim 8, further comprising the steps of:

referencing the database to determine a third amount of cleaning fluid that needs to be passed internally through the cannula so that there is effectively no contaminant remaining inside the cannula;

referencing the database to determine a fourth amount of cleaning fluid that needs to be passed externally about the cannula so that there is effectively no contaminant remaining outside the cannula;

passing at least the third amount of cleaning fluid internally through the cannula; and

passing at least the fourth amount of cleaning fluid externally about the cannula.

10. The method according to claim 1, wherein passing the first amount of cleaning fluid step occurs before the passing the second amount of cleaning fluid step occurs.

11. The method according to claim 10, further comprising the step of:

passing a third predetermined amount of cleaning fluid internally through the cannula after passing the second amount of cleaning fluid steps occurs.

12. The method according to claim 11, wherein the third predetermined amount of cleaning fluid is approximately 5 ml.

13. The method according to claims 11, wherein the third predetermined amount of cleaning fluid is approximately 1 ml.

14. The method according to claim 1, wherein passing the second amount of cleaning fluid step occurs before the passing the first amount of cleaning fluid step occurs.

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

passing a third predetermined amount of cleaning fluid externally about the cannula after the passing the first amount of cleaning fluid step occurs.

16. The method according to claim 15, wherein the third predetermined amount of cleaning fluid is approximately 5 ml.

17. The method according to claim 16, wherein the third predetermined amount of cleaning fluid is approximately 1 ml.

18. The method according to claim 1, wherein passing the first amount of cleaning fluid step occurs substantially simultaneously with the passing the second amount of cleaning fluid step.

19. The method according to claim 1, wherein the cleaning fluid is sterile water.

20. The method according to claim 1, wherein the cleaning fluid is 0.9% sodium chloride.

21. The method according to claim 1, wherein the cleaning fluid is 5% Dextrose.

22. The method according to claim 1, wherein, before passing at least the second amount of cleaning fluid step, further comprising the step of:

moving the cannula into a second position within the first rinsing station so that the cannula is essentially disposed within a fount, wherein the second amount of cleaning fluid is passed from a source through the fount and externally about the cannula.

23. A system for cleaning a reusable cannula comprising:

a drug reconstitution station operative to prepare a first drug solution by use of a cannula thereby contaminating the cannula;

a cannula rinsing station operative to clean the cannula internally and externally with a cleaning fluid so that there is effectively no contaminant remaining inside and outside of the cannula;

the cannula being movable between the drug reconstitution station and the cannula rinsing station;

whereby after the cannula has been cleaned at the cannula rinsing station, the cannula can be reused in the drug reconstitution station to reconstitute a second drug solution that is different than the first drug solution.

24. The system of claim 23, further comprising a database populated with a predetermined minimum amount of cleaning fluid data required to clean a plurality of drug solutions;

and wherein the cannula rinsing station references the database to determine a minimum amount of cleaning fluid for a particular drug solution.

25. The system of claim 24, wherein the amount of cleaning fluid is governed by the particular drug solution introduced into the cannula by the drug reconstitution station.

26. The system of claim 24, wherein the database includes an electronic look-up table.

27. The system of claim 23, wherein the amount of cleaning fluid is governed by a particular drug solution introduced into the cannula by the drug reconstitution station.

28. A computer-implemented method for cleaning a contaminated cannula so that it may be reused, comprising the steps of:

moving a particular cannula into a first rinsing station;

referencing a database to determine what drug solution the cannula has been contaminated with;

referencing the database to determine a first amount of cleaning fluid that needs to be passed internally through the cannula so that there is effectively no contaminant remaining inside of the cannula;

referencing the database to determine a power and time setting for an ultrasonic transducer that is placed externally about a fount which receives the cannula;

passing at least the first amount of cleaning fluid internally through the cannula; and

activating the ultrasonic transducer at the determined power and time setting so that there is effectively no contaminant externally about the cannula.