Apparatus, systems and methods for an infusion pump assembly

• US 10,485,922 B2
• Filed: 11/14/2016
• Issued: 11/26/2019
• Est. Priority Date: 02/09/2006
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Kamen, Dean, Kerwin, John M., Guay, Gerald M., Gray, Larry B., Lanigan, Richard J., Fichera, Stephen L., Murphy, Colin H., Soldau, Thomas F., Blumberg, Jr., David
• Primary Examiner(s): Bouchelle, Laura A
• Application Number:
  US15/350,768
• Publication Number:
  US 20170281860A1
• Time in Patent Office: 1,107 Days
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2205/0266 Shape memory materials
• CPC Class Codes: A61M 2205/0294 Piezoelectric materials
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3375 Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2205/3546 Range
• CPC Class Codes: A61M 2205/3576 with non implanted data transmission devices, e.g. using external transmitter or receiver
• CPC Class Codes: A61M 2205/8237 Charging means
• CPC Class Codes: A61M 2206/22 eliminating pulsatile flows, e.g. by the provision of a dampening chamber
• CPC Class Codes: A61M 2209/045 for filling, e.g. for filling reservoirs
• CPC Class Codes: A61M 5/14224 Diaphragm type
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/14586 pressurised by means of a flexible diaphragm
• CPC Class Codes: A61M 5/16809 by repeated filling and emptying of an intermediate volume pressure infusion using positive displacement pumps A61M5/142
• CPC Class Codes: A61M 5/16886 for measuring fluid flow rate, i.e. flowmeters
• CPC Class Codes: G01F 11/08 of the diaphragm or bellows type
• CPC Class Codes: G01F 11/086 using an auxiliary pressure to cooperate with the diaphragm or bellows
• CPC Class Codes: G05D 7/0647 the plurality of throttling means being arranged in series
• CPC Class Codes: G05D 7/0676 by action on flow sources G05D7/0688, G05D7/0694 take precedence

Abstract

A system for delivery of a volume of infusible fluid. The system includes a controller configured to calculate a trajectory for delivering infusible fluid, the trajectory comprising at least one volume of fluid, and determine a schedule for delivering the at least one volume of fluid according to the trajectory, wherein the schedule comprising an interval and a volume of infusible fluid for delivery. The system also includes a volume sensor assembly for determining the at least one volume of fluid delivered, wherein the controller recalculates the trajectory based on the volume of fluid delivered.

Claims

1. A medical infusion device for delivering an infusible medical fluid comprising:

a disposable housing assembly and reusable housing assembly wherein the reusable housing assembly further comprising a locking ring assembly, wherein the reusable housing assembly releasably engages the disposable housing assembly by way of the locking ring assembly wherein the locking ring assembly comprising;

a spring;

a tab that connects to the spring; and

a magnet that connects to the tab;

a pump having a minimum and maximum pulse volume;

a controller configured to;

determine a first volume of infusible medical fluid delivered; and

based on the first volume of infusible medical fluid delivered, determine a time and volume for delivery of a second volume of infusible fluid.

2. The medical infusion device of claim 1 wherein the disposable housing assembly further comprising a reservoir wherein the pump effectuates the movement of infusible medical fluid from the reservoir to a volume sensor assembly.

3. The medical infusion device of claim 1 wherein the pump is driven by a shape memory alloy.

4. The medical infusion device of claim 1 wherein the infusion pump of claim further comprising a split ring resonator antenna.

5. The medical infusion device of claim 1 further comprising a volume sensor assembly for determining the first volume and the second volume of infusible medical fluid delivered.

6. The medical infusion device of claim 5 wherein the volume sensor assembly comprising:

an acoustically contiguous region having a volume that varies based upon the quantity of infusible fluid received from the reservoir, and

an acoustic energy emitter configured to provide acoustic energy at a plurality of frequencies to excite a gas included within the acoustically contiguous region.

7. A controller for a medical infusion device for delivering a medical fluid comprising:

a volume sensor assembly for determining a first volume of infusible fluid delivered, wherein the volume sensor assembly comprising;

an acoustically contiguous region having a volume that varies based upon the quantity of infusible fluid received from the reservoir, and

an acoustic energy emitter configured to provide acoustic energy at a plurality of frequencies to excite a gas included within the acoustically contiguous region;

a processor for determining the difference between a desired first volume of infusible fluid to be delivered and the actual first volume of infusible fluid delivered; and

a processor for determining a schedule and volume for delivering a second volume of infusible fluid based on the difference.

8. A medical infusion device for delivering an infusible medical fluid comprising:

a pump having a minimum and maximum pulse volume;

a controller configured to;

calculate an approximately constant trajectory for delivering infusible fluid, the approximately constant trajectory comprising at least one volume of fluid; and

determine a schedule for delivering the at least one volume of fluid according to the approximately constant trajectory, wherein the schedule defines an interval and a volume of infusible fluid for delivery; and

a volume sensor assembly, the volume sensor assembly configured to directly measure the at least one volume of fluid delivered, wherein the system recalculates the approximately constant trajectory based on the volume of fluid delivered, wherein the volume sensor assembly comprising;

an acoustically contiguous region having a volume that varies based upon the quantity of infusible fluid received from the reservoir; and

an acoustic energy emitter configured to provide acoustic energy at a plurality of frequencies to excite a gas included within the acoustically contiguous region.

9. The medical infusion device of claim 8, wherein the controller further configured to:

determine a first volume of infusible medical fluid delivered; and

based on the first volume of infusible medical fluid delivered, determine a time and volume for delivery of a second volume of infusible fluid.

10. The medical infusion device of claim 8 wherein the infusion device further comprising a disposable housing assembly and reusable housing assembly.

11. The medical infusion device of claim 8 wherein the reusable housing assembly further comprising a locking ring assembly, wherein the reusable housing assembly releasably engages the disposable housing assembly by way of the locking ring assembly.

12. The medical infusion device of claim 11 wherein the locking ring assembly comprising:

a spring;

a tab that connects to the spring; and

a magnet that connects to the tab.

13. The medical infusion device of claim 9 wherein the disposable housing assembly further comprising a reservoir wherein the pump effectuates the movement of infusible medical fluid from the reservoir to a volume sensor assembly.

14. The medical infusion device of claim 8 wherein the pump is driven by a shape memory alloy.

15. The medical infusion device of claim 8 wherein the infusion pump of claim further comprising a split ring resonator antenna.

16. The medical infusion device of claim 8 further comprising a volume sensor assembly for determining the first volume and the second volume of infusible medical fluid delivered.

17. The medical infusion device of claim 16 wherein the volume sensor assembly comprising:

an acoustically contiguous region having a volume that varies based upon the quantity of infusible fluid received from the reservoir, and

an acoustic energy emitter configured to provide acoustic energy at a plurality of frequencies to excite a gas included within the acoustically contiguous region.