Infusion pump assembly

• US 9,993,600 B2
• Filed: 12/23/2013
• Issued: 06/12/2018
• Est. Priority Date: 12/31/2009
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Lanier, Jr., Gregory R., Gray, Larry B., Lanigan, Richard J., Kamen, Dean, Fichera, Stephen L., Kerwin, John M.
• Primary Examiner(s): Stigell, Theodore
• Application Number:
  US14/138,535
• Publication Number:
  US 20140350459A1
• Time in Patent Office: 1,632 Days
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2005/1587 suitable for being connected to an infusion line after insertion into a patient
• CPC Class Codes: A61M 2205/0266 Shape memory materials
• CPC Class Codes: A61M 2205/273 preventing reuse, e.g. of disposables
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2209/086 Docking stations
• CPC Class Codes: A61M 39/08 Tubes; Storage means specially adapted therefor
• CPC Class Codes: A61M 5/14216 Reciprocating piston type
• CPC Class Codes: A61M 5/14224 Diaphragm type
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/16831 Monitoring, detecting, signalling or eliminating infusion flow anomalies low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/36 with means for eliminating or preventing injection or infusion of air into body dialysis systems, blood oxygenators A61M1/14; haemofiltration equipment A61M1/34; automatic tube cut-off A61M39/281
• CPC Class Codes: G16H 20/17 delivered via infusion or injection
• CPC Class Codes: G16H 40/67 for remote operation
• CPC Class Codes: Y02A 90/10 : Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

A wearable infusion pump assembly. The wearable infusion pump assembly includes a reservoir for receiving an infusible fluid and a fluid delivery system configured to deliver the infusible fluid from the reservoir to an external infusion set. The fluid delivery system includes a controller, a pump assembly for extracting a quantity of infusible fluid from the reservoir and providing the quantity of infusible fluid to the external infusion set, the pump assembly comprising a pump plunger, the pump plunger having distance of travel, the distance of travel having a starting position and an ending position, at least one optical sensor assembly for sensing the starting position and ending position of the pump plunger distance of travel and sending sensor output to the controller, and a first valve assembly configured to selectively isolate the pump assembly from the reservoir, wherein the controller receives the sensor output and determines the total displacement of the pump plunger.

Claims

1. A wearable infusion pump assembly comprising:

a disposable housing assembly for an infusion pump assembly comprising;

a reservoir portion fluidly connected to a fluid path, the reservoir portion comprising a bubble trap wherein the bubble trap prevents air from moving from the reservoir portion to the fluid path, the bubble trap further comprising;

an outlet portion and a non-outlet portion, the non-outlet portion comprising a tapered portion that tapers to a bottom portion, the tapered portion of the non-outlet portion ending at the outlet portion; and

the outlet portion comprising the bottom portion in communication with an upward ramped portion in fluid communication with a reservoir outlet,

wherein the bottom portion configured whereby fluid congregates in the bottom portion and the tapered portion configured whereby air bubbles congregate in the tapered portion; and

a reusable housing assembly comprising;

a fluid delivery system configured to deliver the infusible fluid from the reservoir to an external infusion set, wherein the fluid delivery system comprising;

a controller;

a pump assembly for extracting a quantity of infusible fluid from the reservoir and providing the quantity of infusible fluid to the external infusion set, the pump assembly comprising a pump plunger, the pump plunger having distance of travel, the distance of travel having a starting position and an ending position;

at least one optical sensor assembly for sensing the starting position and ending position of the pump plunger distance of travel and sending sensor output to the controller; and

a first valve assembly configured to selectively isolate the pump assembly from the reservoir, wherein the controller receives the sensor output and determines the total displacement of the pump plunger.

2. The wearable infusion pump assembly of claim 1 further comprising wherein the controller correlates the displacement of the pump plunger to a volume of fluid delivered.

3. The wearable infusion pump assembly of claim 2 further comprising wherein the controller, based on the volume of fluid delivered, commands an actuator to actuate the pump plunger to a target position.

4. The wearable infusion pump assembly of claim 1 further comprising a second valve assembly configured to selectively isolate the pump assembly from the external infusion set.

5. The wearable infusion pump assembly of claim 4 further comprising at least one optical sensor assembly for sensing the position of the second valve assembly.

6. The wearable infusion pump assembly of claim 4 wherein a first portion of the second valve assembly is positioned within the disposable housing assembly, and a second portion of the second valve assembly is positioned within the reusable housing assembly.

7. The wearable infusion pump assembly of claim 1 further comprising:

a disposable housing assembly including the reservoir and a first portion of the fluid delivery system; and

a reusable housing assembly including a second portion of the fluid delivery system.

8. The wearable infusion pump assembly of claim 7 wherein a first portion of the pump assembly is positioned within the disposable housing assembly, and a second portion of the pump assembly is positioned within the reusable housing assembly.

9. The wearable infusion pump assembly of claim 7 wherein a first portion of the first valve assembly is positioned within the disposable housing assembly, and a second portion of the first valve assembly is positioned within the reusable housing assembly.

10. The wearable infusion pump assembly of claim 1 wherein the external infusion set is a detachable external infusion set configured to releasably engage the fluid delivery system.

11. The disposable housing assembly of claim 1 further comprising a membrane assembly, the membrane assembly connected to the reservoir wherein the membrane assembly forms a portion of the reservoir.

12. The disposable housing assembly of claim 11 further comprising a septum assembly, the septum assembly formed on the membrane assembly.

13. The disposable housing assembly of claim 11 further comprising a septum assembly, the septum assembly connected to the reservoir.

14. The disposable housing assembly of claim 1 further comprising a vent, wherein the vent further comprising a filter.

15. The wearable infusion pump assembly of claim 1 further comprising a second valve assembly configured to selectively isolate the pump assembly from the external infusion set.

16. The wearable infusion pump assembly of claim 15 further comprising at least one optical sensor assembly for sensing the position of the second valve assembly.

17. A wearable infusion pump assembly comprising:

a disposable housing assembly for an infusion pump assembly comprising;

a reservoir portion fluidly connected to a fluid path, the reservoir portion comprising a bubble trap comprising;

an outlet portion and a non-outlet portion, the non-outlet portion comprising a tapered portion that tapers to a bottom portion, the tapered portion of the non-outlet portion ending at the outlet portion; and

the outlet portion comprising the bottom portion in communication with an upward ramped portion in fluid communication with a reservoir outlet; and

a reusable housing assembly comprising;

a fluid delivery system configured to deliver the infusible fluid from the reservoir to an external infusion set, wherein the fluid delivery system comprising;

a controller;

a pump assembly, comprising a pump plunger, for extracting a quantity of infusible fluid from the reservoir and providing the quantity of infusible fluid to the external infusion set; and

at least one optical sensor assembly for sensing the starting position and ending position of the pump plunger and sending sensor output to the controller.

18. The wearable infusion pump assembly of claim 17 further comprising wherein the controller determines a displacement of the pump plunger using the sensor output and wherein the controller correlates displacement of the pump plunger to a volume of fluid delivered.

19. The wearable infusion pump assembly of claim 18 further comprising wherein the controller, based on the volume of fluid delivered, commands an actuator to actuate the pump assembly to a target position.

20. The disposable housing assembly of claim 17 further comprising a membrane assembly, the membrane assembly connected to the reservoir wherein the membrane assembly forms a portion of the reservoir.