Rapid infusion system

• US 7,311,691 B2
• Filed: 03/06/2003
• Issued: 12/25/2007
• Est. Priority Date: 09/29/1999
• Status: Expired due to Fees

• Current Assignee: Smisson-Cartledge Biomedical LLC
• Original Assignee: Smisson-Cartledge Biomedical LLC
• Inventors: Cartledge, Richard G., Smisson, Hugh F. III, Brown, Jeffery O.
• Primary Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US10/388,341
• Publication Number:
  US 20030225396A1
• Time in Patent Office: 1,755 Days
• Field of Search: 604/65, 604/66, 604/67, 604/30, 604/31, 604/32, 604/33, 604/34, 604/35, 128/DIG.12, 128/DIG.13
• US Class Current: 604/65
• 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 roller head assembly comprising:

a. a roller head drive shaft; and

b. at least one pivot arm assembly, each pivot arm assembly comprising

i. pivoting means in communication with the roller head drive shaft; and

ii. a roller mounted on the pivot arm assembly;

such that when the drive shaft is rotated in one direction, each pivot arm rotates in an opposite direction via communication with the roller head drive shaft to outwardly extend from the pivot arm assembly and impart motion to the roller whereby infusium in an adjacent conduit can be moved therethrough, and

when the drive shaft is reversely rotated, each pivot arm rotates in an opposite direction via communication with the roller head drive shaft to inwardly retract toward the pivot arm assembly and stop rotation of the drive shaft whereby an infusium conduit can be removed or placed around the roller head assembly.

2. The roller head assembly of claim 1, comprising two pivot arm assemblies.

3. The roller head assembly of claim 2, wherein the two pivot arm assemblies are mounted in communication with the drive shaft 180 degrees apart.

4. The roller head assembly of claim 1, comprising more than two pivot arm assemblies.

5. A rapid infusion system comprising the roller head assembly of claim 1.

6. The rapid infusion system of claim 5, wherein The system is capable of delivering infusium a patient at rates of between 20 cc/hour to 1,500 cc/minute.

7. A roller head assembly for a rapid infusion system comprising:

a. a roller head drive shaft having articulated gears thereon;

b. a roller cover rotatably encompassing a portion of the drive shaft having the gears thereon; and

c. at least one pivot arm assembly, each pivot arm assembly comprising

i. pivot gears engaged in mechanical communication with the roller head drive shaft gears;

ii. a roller rotatably mounted on the pivot arm assembly; and

iii. a pivot pin rotatably mounting the pivot arm assembly to the roller cover,

such that when the drive shaft is rotated in one direction, each pivot arm rotates in an opposite direction about the pivot pin via the engaged drive shaft gears and pivot gears to outwardly extend from the roller cover until the dove shaft and pivot arm assembly rotate as a unit to impart motion to the roller cover and extended roller whereby infusium in an adjacent conduit can be moved therethrough, and

when the drive shaft is reversely rotated, each pivot arm rotates in an opposite direction about the pivot pin via the engaged drive shaft gears and pivot gears to inwardly retract toward the roller cover to stop rotation of the drive shaft whereby an infusium conduit can be removed or placed around the roller head assembly.

8. The roller head assembly of claim 7, comprising two pivot arm assemblies.

9. The roller head assembly of claim 7, wherein the two pivot arm assemblies are mounted on the roller cover 180 degrees apart.

10. The roller head assembly of claim 7, comprising more than two pivot arm assemblies.

11. A rapid infusion system comprising the roller head assembly of claim 7.

12. The rapid infusion system of claim 11 wherein the system is capable of delivering infusion to a patient at rates of between 20 cc/hour to 1,500 cc/minute.