Automatic safety occluder

• US 8,491,543 B2
• Filed: 07/22/2011
• Issued: 07/23/2013
• Est. Priority Date: 02/06/2009
• Status: Active Grant

• Current Assignee: Zevex (Moog Incorporated)
• Original Assignee: Zevex (Moog Incorporated)
• Inventors: Stringham, Mark
• Primary Examiner(s): VU, QUYNH-NHU HOANG
• Application Number:
  US13/188,818
• Publication Number:
  US 20110276000A1
• Time in Patent Office: 732 Days
• Field of Search: 604/118, 604/246, 604/249, 604250-251, 251 4- 5, 251/7, 251/90, 251/321, 251/337
• US Class Current: 604/250
• CPC Class Codes: A61M 39/28 Clamping means for squeezing flexible tubes, e.g. roller clamps tube strippers A61M1/83
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28

Abstract

An automatic safety occluder provides an occluder for an infusion set that is biased in a closed position until an electrical signal is received that causes the occluder to open. Should the occluder fail to be installed correctly, or if power is removed, the occluder will return to its biased closed position, preventing free flow. The occluder may also be placed in an integrated unit such that the automatic safety occluder may attach to the tubing as a unit.

Claims

1. A method of selectively preventing flow through an infusion set comprising:

selecting an infusion set, the infusion set having a tube through which fluid is delivered and an occluder disposed on the tube;

selecting a pump, the pump having an electric solenoid;

mounting the infusion set and occluder in a pump such that the occluder is disposed adjacent the solenoid; and

selectively sending an electrical signal to the occluder to selectively allow flow through the occluder.

2. The method of claim 1, wherein the pump has a recess therein for receiving the occluder and wherein the solenoid is disposed in communication with the recess.

3. The method of claim 1, wherein the method comprises selecting an infusion set with an occluder comprising:

a body having a passage therethrough;

a plunger movable within the body and having a passage therethrough;

the tube located in the body passage and the plunger passage;

wherein the plunger is movable between a first position wherein the body passage and the plunger passage are in alignment to allow flow through the tube and a second position wherein the tube is pinched between the body passage and the plunger passage; and

a biasing member disposed between the body and the plunger to bias the plunger into the second position.