FLOW STOP INSERT APPARATUS AND METHODS

• US 20130267899A1
• Filed: 04/10/2012
• Published: 10/10/2013
• Est. Priority Date: 04/10/2012
• Status: Active Grant

• Current Assignee: Smiths Medical ASD, Inc. (Smiths Group International Holdings Ltd.)
• Original Assignee: Smiths Medical ASD, Inc. (Smiths Group International Holdings Ltd.)
• Inventors: Cote, Steve, Robert, Renee, Taylor, Jeff
• Granted Patent: US 8,974,415 B2
• Time in Patent Office: Days
• US Class Current: 604/151
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/123 with incorporated reservoirs
• CPC Class Codes: A61M 2207/00 Methods of manufacture, assembly or production
• CPC Class Codes: A61M 39/281 Automatic tube cut-off devices, e.g. squeezing tube on detection of air
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• 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 5/16804 Flow controllers
• CPC Class Codes: Y10T 29/49412 with assembly, disassembly or composite article making

Abstract

An embodiment is directed to pressure plate for attachment to an infusion pump, where the pressure plate includes a tubing support surface at least partially surrounded by a raised perimeter support. The pressure plate includes a plurality of guide structures extending from the raised perimeter support that define a passageway for an infusion pump tube. Additionally an attachable flow stop assembly is included that includes an attachable occlusion arch and an attachable flow stop arm. The attachable occlusion arch includes a plurality of tab structures that couple to the raised perimeter support. The occlusion arch further includes an aperture configured to surround an infusion pump tube threaded therethrough. The attachable flow stop arm is operatively coupled to the raised perimeter support adjacent the attachable occlusion arch in a spring-biased fashion such that the aperture in the occlusion arch may be selectively occluded by the flow stop arm.

Claims

1. A pressure plate for attachment to an infusion pump, comprising:

a tubing support surface at least partially surrounded by a raised perimeter support comprising a raised rail and a plurality of raised supporting structures;

a plurality of guide structures extending from the raised perimeter support that define a passageway for an infusion pump tube; and

an attachable flow stop assembly, including;

an attachable occlusion arch including a plurality of tab structures that attachably couple to the raised perimeter support, the occlusion arch further including an aperture configured to surround an infusion pump tube threaded therethrough; and

an attachable flow stop arm operatively coupled to the raised perimeter support adjacent the attachable occlusion arch in a spring-biased fashion such that the aperture in the occlusion arch may be selectively occluded by the flow stop arm.

2. The pressure plate of claim 1, wherein the attachable flow stop is adapted to provide flow stop detection features to a sensor on the infusion pump.

3. The pressure plate of claim 1, further including a ramp feature on the tubing support surface proximate the passageway for the infusion pump tube to align the height of the infusion pump tube.

4. The pressure plate of claim 1, wherein positive stops are provided to retain infusion pump tubing to the tubing support surface.

5. The pressure plate of claim 1, wherein the attachable occlusion arch includes four tab structures.

6. The pressure plate of claim 1, wherein the attachable occlusion arch includes three tab structures.

7. The pressure plate of claim 1, wherein the raised perimeter support includes recesses in the tubing support surface for retention of the tab structures.

8. A cassette reservoir attachment of an infusion pump, comprising:

a reservoir housing for enclosing a quantity of fluid;

an infusion tube to supply the fluid from the reservoir housing;

a pressure plate including;

a tubing support surface for supporting a section of the infusion tube extending from the reservoir housing;

a plurality of retention and guide features formed in the tubing support surface;

a free flow protection device that prevents free-flow of fluid in the tube, including;

an attachable occlusion arch with snaps that attach to retention and guide features; and

an attachable flow stop arm operatively coupled to the retention and guide features for movement adjacent the attachable occlusion arch to selectively occlude an infusion tube passing through the occlusion arch.

9. A cassette reservoir attachment of claim 8, wherein the reservoir housing is configured for enclosing the quantity of fluid in a bag in the reservoir housing.

10. An attachable flow stop assembly for use in occluding a tube of an infusion pump, comprising:

an attachable occlusion arch including tab structures to attachably couple to a pressure plate of an infusion pump, the occlusion arch defining a passageway to at least partially surround a length of an infusion pump tube; and

an attachable flow stop arm operatively coupled to the pressure plate for movement adjacent the attachable occlusion arch in a spring biased fashion to selectively occlude the passageway defined by the occlusion arch.

11. The attachable flow stop of claim 10, wherein the attachable occlusion arch includes four tab structures.

12. The attachable flow stop of claim 10, wherein the attachable occlusion arch includes three tab structures.

13. The attachable flow stop of claim 10, wherein the attachable occlusion arch contains an aperture completely surrounding a length of an infusion pump tube.

14. The attachable flow stop of claim 10, wherein the attachable occlusion arch partially defines aperture passageway.

15. A method of assembling a cassette for an infusion pump, comprising:

providing an infusion pump reservoir cassette containing an interior reservoir bag and a top surface comprising a pressure plate;

extending an infusion tubing, coupled to the reservoir bag at a location proximate an opening in the pressure plate, through an aperture in an attachable flow stop assembly and across the surface of the pressure plate, the attachable flow stop, including;

an attachable occlusion arch defining the aperture and having legs with one or more tab members for providing coupled engagement;

an attachable flow stop arm; and

securing the tab members to features in the pressure plate.

16. The method of claim 15, wherein the attachable occlusion arch includes four legs each having as least one tab member.

17. The method of claim 15, wherein the attachable occlusion arch includes three tab members.

18. The method of claim 15, wherein the attachable occlusion arch entirely defines aperture passageway.

19. The method of claim 15, wherein the attachable occlusion arch partially defines aperture passageway.