Intravenous pumping air management systems and methods

• US 8,382,711 B2
• Filed: 12/29/2010
• Issued: 02/26/2013
• Est. Priority Date: 12/29/2010
• Status: Expired due to Fees

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Inventors: Dudar, Thomas, Krogh, Ross, Martucci, James, Sternberg, Shmuel
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): BERDICHEVSKY, AARTI
• Application Number:
  US12/981,152
• Publication Number:
  US 20120172800A1
• Time in Patent Office: 790 Days
• Field of Search: 604/122, 604/123
• US Class Current: 604/123
• CPC Class Codes: A61M 2205/60 with identification means
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/36 with means for eliminating or preventing injection or infusion of air into body dialysis systems, blood oxygenators A61M1/14; haemofiltration equipment A61M1/34; automatic tube cut-off A61M39/281
• CPC Class Codes: A61M 5/365 Air detectors A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626
• CPC Class Codes: A61M 5/38 using hydrophilic or hydrophobic filters
• CPC Class Codes: A61M 5/385 using hydrophobic filters

Abstract

An intravenous (“IV”) liquid delivery system includes: an IV pump tubing set; a shuttle pump or membrane pump actuator operable with the IV pump tubing set; upstream and downstream valve actuators operable with the IV pump tubing set; the IV pump tubing set including an air removal device; an air detector configured to sense air in the IV pump tubing set; a control unit configured and arranged to (i) open the upstream valve actuator and close the downstream valve actuator to allow the pump actuator to draw liquid into a pump actuation portion of the IV pump tubing set, and (ii) close the upstream valve actuator and open the downstream valve actuator to allow the pump actuator to push liquid out of the pump actuation portion, the system configured to attempt to remove the air via the air removal device while operating the upstream and downstream valve actuators according to (i) and (ii).

Claims

1. An intravenous (“

IV”

) liquid delivery system comprising;

an IV pump tubing set including an upstream valve portion, a downstream valve portion, and a pump portion located between the upstream valve portion and the downstream valve portion;

a pump actuator operable with the pump portion of the IV pump tubing set;

an air removal device located upstream of the pump actuator, the air removal device including a liquid inlet, a liquid outlet, an air collection portion, and a liquid collection portion located adjacent to the liquid outlet, and wherein the air collection portion of the air removal device includes an air passing but liquid retaining filter and a check valve in air flow communication with the air passing but liquid retaining filter; and

an air detector located downstream from the air removal device and upstream of the upstream valve portion.

2. The IV liquid delivery system of claim 1, wherein the filter is a hydrophobic filter.

3. The IV liquid delivery system of claim 1, wherein the liquid collection portion includes a liquid passing but air retainer filter.

4. The IV liquid delivery system of claim 1, wherein the IV pump tubing set is configured to be mounted such that the air collection portion is located elevationally above the liquid collection portion.

5. The IV liquid delivery system of claim 1, wherein the air removal device includes a housing having a larger cross-sectional area than that of a tube of the IV pump tubing set.

6. The IV liquid delivery system of claim 1, wherein the air removal device is provided as part of the IV pump tubing set.

7. The IV liquid delivery system of claim 1, wherein the air detector is a first air detector and which includes a second air detector, the first air detector located downstream of the air removal device, and the second air detector located downstream of the downstream valve portion.

8. The IV liquid delivery system of claim 1, wherein the system further includes upstream and downstream valve actuators operable with the pump actuator to move liquid through the IV pump tubing set.

9. The IV liquid delivery system of claim 1, wherein the air removal device is located upstream of the upstream valve portion.

10. An intravenous (“

IV”

) liquid delivery system comprising;

a pump actuator; and

an IV pump tubing set including;

an upstream valve portion,

a downstream valve portion,

a pump portion operable with the pump actuator and located between the upstream valve portion and the downstream valve portion,

an air removal device located upstream of the pump actuator, the air removal device including a liquid inlet, a liquid outlet, an air collection portion, and a liquid collection portion located adjacent to the liquid outlet, and wherein the air collection portion of the air removal device includes an air passing but liquid retaining filter and a check valve in air flow communication with the air passing but liquid retaining filter, and the liquid collection portion includes a liquid passing but air retaining filter; and

an air detector located downstream from the air removal device and upstream of the upstream valve portion.

11. An intravenous (“

IV”

) liquid delivery system comprising;

an IV pump tubing set;

a pump actuator operable with the IV pump tubing set;

an upstream valve actuator operable with the IV pump tubing set upstream of the pump actuator;

an air detector located upstream of the upstream valve actuator;

a downstream valve actuator operable with the IV pump tubing set downstream of the pump actuator; and

an air purge valve actuator operable with the IV pump tubing set downstream of the downstream valve actuator,

wherein the IV pump tubing set further includes a bypass recirculation line extending from a point located between the downstream valve actuator and the air purge valve actuator to a point in the IV pump tubing set upstream of the air detector, and wherein upon a detection of air in a medical fluid by the air detector, the air purge valve actuator is closed and the pump actuator, the upstream valve actuator and the downstream valve actuator are operated to recirculate the medical fluid using the bypass recirculation line to purge air from the medical fluid.

12. The IV liquid delivery system of claim 11, wherein the bypass recirculation line extends to a supply of the medical fluid for the IV pump tubing set.

13. The IV liquid delivery system of claim 11, wherein the bypass recirculation line is in fluid communication with an air removal device to purge air from the medical fluid.

14. An intravenous (“

IV”

) liquid delivery system comprising;

an IV pump tubing set;

a shuttle pump or membrane pump actuator operable with the IV pump tubing set;

an upstream valve actuator operable with the IV pump tubing set;

a downstream valve actuator operable with the IV pump tubing set;

the IV pump tubing set including an air removal device;

an air detector configured to sense air in the IV pump tubing set;

the air detector located upstream of the upstream valve actuator;

a control unit configured and arranged to (i) open the upstream valve actuator and close the downstream valve actuator to allow the pump actuator to draw liquid into a pump actuation portion of the IV pump tubing set, and (ii) close the upstream valve actuator and open the downstream valve actuator to allow the pump actuator to push liquid out of the pump actuation portion; and

wherein the IV pump tubing set further includes a bypass recirculation line extending from a point located downstream from the downstream valve actuator to a point in the IV pump tubing set upstream of the air detector; and

wherein the system is configured to attempt to remove the air via the air removal device while operating the upstream and downstream valve actuators according to (i) and (ii).

15. The IV liquid delivery system of claim 14, wherein the air removal device is located (a) upstream of the upstream valve actuator or (b) downstream of the pump actuator.

16. The IV liquid delivery system of claim 14, which includes an air purge valve actuator located downstream of the downstream valve actuator, the control unit further configured to receive a signal from the air detector indicative of air in the IV pump tubing set and close the air purge valve actuator to attempt to remove the air via the air removal device while operating the upstream and downstream valve actuators according to (i) and (ii).