Rapid infusion system

• US 20030225396A1
• Filed: 03/06/2003
• Published: 12/04/2003
• Est. Priority Date: 09/29/1999
• Status: Active Grant

• Current Assignee: Smisson-Cartledge Biomedical LLC
• Original Assignee: Smisson-Cartledge Biomedical LLC
• Inventors: Cartledge, Richard G., Smisson, Hugh F. III, Brown, Jeffery O.
• Granted Patent: US 7,311,691 B2
• Time in Patent Office: Days
• US Class Current: 604/890.1
• CPC Class Codes: A61M 1/02 Blood transfusion apparatus blood infusion by syringes A61M5/14
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 5/1411 Drip chambers A61M5/162, A61M5/1689, A61M5/40 take precedence
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14232 Roller pumps
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/365 Air detectors A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

A rapid infusion system for the intravenous delivery of fluids at standard and rapid flow rates. The system includes a pump assembly, a drive assembly to power the pump, and a fluid containment system that keeps the infused fluid out of direct contact with the pump assembly and that is preferably disposable and removable. In one embodiment the drive assembly includes a differential drive that interacts with more than one motor. In one embodiment, the pump assembly includes a roller pump and the pump chamber is a collapsible, preformed tube that is preferably attached to a pump cartridge frame. Optionally, the system includes a self-leveling drip chamber and the fluid containment system is disposable and includes a pump cartridge containing the drip chamber and the pump chamber, I.V. tubing, outlet infusion tubing, and a heater cartridge.

Claims

1. A rapid infusion system for delivery of an infusium to a patient, comprising:

a pump assembly; and

a differential drive assembly that drives the pump assembly.

2. The rapid infusion system of claim 1, wherein the system is capable of delivering infusium at standard flow rates and rapid flow rates.

3. The rapid infusion system of claim 1 wherein the system can provide fluid flow rates from less than 25 cc/hour to over 1500 cc/minute.

4. The rapid infusion system of claim 1, wherein the differential drive assembly interacts with at least a low speed motor and a high speed motor.

5. The rapid infusion system of claim 1, further comprising a fluid containment assembly.

6. The rapid infusion system of claim 5, wherein the fluid containment assembly is removable from the system.

7. The rapid infusion system of claim 5, wherein the fluid containment assembly includes a pump cartridge having a cartridge frame and a pump chamber that is retained by the cartridge frame.

8. The rapid infusion system of claim 7, wherein the pump chamber is a preformed collapsible plastic tube.

9. The rapid infusion system of claim 8, wherein the preformed pump chamber has a circular, semicircular, “

U”

, or “

Ω

”

shape.

10. The rapid infusion system of claim 5, wherein the fluid containment assembly includes a drip chamber that is fluid self leveling.

11. The rapid infusion system of claim 10, wherein the system includes a sensor to detect the level of fluid in the drip chamber and a fluid level controller to automatically fill the drip chamber to the desired level.

12. The rapid infusion system of claim 11, wherein the fluid level controller is a diaphragm pump that extracts air from the drip chamber.

13. The rapid infusion system of claim 5 wherein the fluid containment system includes a pump cartridge, IV tubing, an output infusion line, and a heater cassette.

14. The rapid infusion system of claim 1 wherein the pump assembly includes a pump roller head assembly that is retractable to facilitate loading and unloading of a pump chamber from the rapid infusion system.

15. The rapid infusion system of claim 14 wherein the pump roller head includes pivotable rollers.

16. The rapid infusion system of claim 1, wherein the system further includes a temperature controller that heats the infusium before it exits the system.

17. The rapid infusion system of claim 2, further including a fluid flow rate titrator to titrate the flow rate from a standard flow rate to a preset rapid flow rate for rapid infusion.

18. The rapid infusion system of claim 17, wherein the titrator is a spring loaded potentiometer.

19. The rapid infusion system of claim 17, wherein the titrator is operated with a foot pedal or a hand control.

20. The rapid infusion system of claim 1, further comprising a single central venous catheter through which the infusium is delivered to the patient and the C.V.P. is measured.

21. The rapid infusion system of claim 20, wherein the system includes a controller that adjusts the flow rate to achieve a programmed C.V.P.

22. The rapid infusion system of claim 1, further comprising a control system that receives a signal from a sensor and controls an element of the system selected from the group consisting of a pump drive assembly, a temperature controller, and a self-leveling drip chamber.

23. The rapid infusion system of claim 22, wherein the sensor is selected from a C.V.P. sensor, a system pressure sensor, a fluid level sensor, a temperature sensor, and an air bubble sensor.

24. A rapid infusion system for delivery of an infusium to a patient, comprising:

a fluid containment assembly that includes a pump chamber that includes a collapsible plastic tube;

a roller pump assembly that pumps the infusium through the fluid containment assembly by imparting motion to infusium within the pump chamber; and

a drive assembly that drives the pump assembly.

25. A rapid infusion system for delivery of an infusium to a patient, comprising:

a fluid containment assembly including a pump chamber;

a roller pump assembly that imparts motion to infusium in the pump chamber; and

a drive assembly that drives the pump assembly;

wherein the roller pump assembly includes a pump roller head assembly that is retractable to facilitate loading and unloading of the pump chamber from the rapid infusion system.

26. A rapid infusion system for delivery of an infusium to a patient, comprising:

a fluid containment assembly including a fluid self-leveling drip chamber;

a pump assembly that pumps the infusium through the fluid containment assembly; and

a drive assembly that drives the pump assembly.

27. A rapid infusion system for delivery of an infusium to a patient, comprising:

a pump assembly that pumps the infusium through the fluid containment assembly; and

a drive assembly that drives the pump assembly;

wherein the system is capable of delivering infusium at standard flow rates and rapid flow rates; and

further including a titrator to titrate the flow rate from the standard flow rate to a preset rapid flow rate for rapid infusion.