VARIABLE FLOW RESHAPABLE FLOW RESTRICTOR APPARATUS AND RELATED METHODS

• US 20080029173A1
• Filed: 03/30/2007
• Published: 02/07/2008
• Est. Priority Date: 08/07/2006
• Status: Abandoned Application

• Current Assignee: Tandem Diabetes Care Incorporated
• Original Assignee: Tandem Diabetes Care Incorporated
• Inventors: DiPerna, Paul Mario
• Application Number:
  US11/694,841
• Publication Number:
  US 20080029173A1
• Time in Patent Office: Days
• US Class Current: 137/803
• CPC Class Codes: F15D 1/00 Influencing flow of fluids
• CPC Class Codes: Y10T 137/206 Flow affected by fluid contact, energy field or coanda effect [e.g., pure fluid device or system]

Abstract

Disclosed in a novel apparatus and associated methods for controlling the flow around a reshapable flow restrictor. The flow restrictor reshapes as a function of the pressure differential within the flow restrictor. Small changes in the pressure differential allow for larger changes in the flow rate over conventional flow restrictor systems and provides for real time, fine-tuned adjustments to the flow rate.

Claims

1. An apparatus comprising:

at least one reshapable flow restrictor having at least one lumen;

a substantially rigid conduit to enclose the reshapable flow restrictor;

a substance within the lumen of the reshapable flow restrictor to effect reshaping of the reshapable flow restrictor; and

a deliverable material flowing within the rigid conduit.

2. The apparatus of claim 1, wherein a flow rate of the deliverable material changes as a function of the cross-sectional diameter of the at least one reshapable flow restrictor.

3. The apparatus of claim 2, wherein each reshapable flow restrictor is capable of increasing in cross-sectional area to occupy substantially the entire cross-section of the rigid conduit, thereby substantially preventing the flow of the deliverable material through the rigid conduit.

4. The apparatus of claim 2, wherein the reshapable flow restrictor is made from a compliant biocompatible material.

5. The apparatus of claim 4, wherein the compliant biocompatible material is at least one of the group consisting of silicon rubber, natural rubber, polyisoprene, and urethane.

6. The apparatus of claim 2, wherein the reshapable flow restrictor is used in the drilling and transport of petroleum products.

7. The apparatus of claim 2, wherein the reshapable flow restrictor is a non-circular shape.

8. The apparatus of claim 2, further comprising a feedback measuring device to measure at least the flow rate of the deliverable material.

9. The apparatus of claim 8, wherein the feedback measuring device provides at least flow rate data in about real time.

10. A method comprising:

providing at least one reshapable flow restrictor enclosed in a substantially rigid conduit, wherein each flow restrictor reshapes as a function of the pressure within the reshapable flow restrictor; and

allowing for the pressure of a substance within each flow restrictor to vary, the variance in pressure causing each flow restrictor to reshape resulting in an increased or decreased flow rate of a deliverable material flowing in the rigid conduit;

wherein as pressure within each flow restrictor increases, the flow rate of the deliverable material decreases and as pressure within each flow restrictor decreases, the flow rate of the deliverable material increases.

11. The method of claim 10, wherein the reshapable flow restrictor is made from a compliant biocompatible material.

12. The method of claim 10, wherein the reshapable flow restrictor is used in the drilling and transport of petroleum products.

13. The method of claim 10, further comprising providing a feedback measuring device to monitor a flow rate in about real time.

14. The method of claim 13, wherein adjustments to the flow rate of the deliverable material are calculated using data derived from the feedback measuring device.

15. The method of claim 14, wherein adjustments to the flow rate of the deliverable material are effected using data derived from the feedback measuring device.

16. The method of claim 10, wherein the resultant shape of each flow restrictor after a change in pressure comprises a larger or smaller cross-sectional area.

17. A method comprising:

providing at least one reshapable flow restrictor disposed in a rigid conduit to vary the flow rate of a deliverable material flowing outside of each reshapable flow restrictor;

wherein the flow rate of the deliverable material varies as a) a function of pressure within the rigid conduit and b) inversely as a function of the diameter of each reshapable flow restrictor; and

wherein the diameter of each reshapable flow restrictor is changeable.

18. The method of claim 17, wherein the diameter of each reshapable flow restrictor changes as the pressure of a substance in each reshapable flow restrictor changes.

19. The method of claim 18, wherein the flow rate of the deliverable material is monitored by a feedback measuring device;

and

wherein the feedback measuring device measures at least the flow rate of the deliverable material.

20. The method of claim 19, wherein the feedback measuring device measures at least the flow rate of the deliverable material in about real time.