Infusion pump assembly

• US 8,496,646 B2
• Filed: 12/31/2008
• Issued: 07/30/2013
• Est. Priority Date: 02/09/2007
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Kamen, Dean, Gray, Larry Brian, Lanigan, Richard J., Kerwin, John Matthew, Fichera, Stephen Lewis
• Primary Examiner(s): SHUMATE, VICTORIA PEARL
• Application Number:
  US12/347,981
• Publication Number:
  US 20090275896A1
• Time in Patent Office: 1,672 Days
• Field of Search: 604/65, 604/67, 604/118, 604/131, 604/132, 604151-153, 604/246, 604/247, 604/257, 604/890.1
• US Class Current: 604/890.1
• CPC Class Codes: A61B 2560/0412 Low-profile patch shaped housings
• CPC Class Codes: A61B 5/0024 for multiple sensor units attached to the patient, e.g. using a body or personal area network
• CPC Class Codes: A61B 5/1427 Multiple blood sampling, e.g. at periodic or pre-established intervals
• CPC Class Codes: A61B 5/6833 Adhesive patches
• CPC Class Codes: A61J 1/20 Arrangements for transferring or mixing fluids, e.g. from vial to syringe
• CPC Class Codes: A61M 2005/1402 Priming
• CPC Class Codes: A61M 2005/14208 with a programmable infusion control system, characterised by the infusion program
• CPC Class Codes: A61M 2005/14252 with needle insertion means
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2005/14506 mechanically driven, e.g. spring or clockwork
• CPC Class Codes: A61M 2005/1583 Needle extractors
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1586 Holding accessories for holding infusion needles on the body
• CPC Class Codes: A61M 2005/16863 Occlusion detection
• CPC Class Codes: A61M 2205/0266 Shape memory materials
• CPC Class Codes: A61M 2205/0294 Piezoelectric materials
• CPC Class Codes: A61M 2205/04 implanted
• CPC Class Codes: A61M 2205/16 with back-up system in case of failure
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3303 Using a biosensor
• CPC Class Codes: A61M 2205/3331 : Pressure; Flow
• CPC Class Codes: A61M 2205/3337 : Controlling, regulating pressure or flow by means of a valve by-passing a pump
• CPC Class Codes: A61M 2205/3368 : Temperature
• CPC Class Codes: A61M 2205/3375 : Acoustical, e.g. ultrasonic, measuring means
• CPC Class Codes: A61M 2205/3379 : Masses, volumes, levels of fluids in reservoirs, flow rates
• CPC Class Codes: A61M 2205/3523 : using telemetric means
• CPC Class Codes: A61M 2205/3546 : Range
• CPC Class Codes: A61M 2205/3569 : sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/3576 : with non implanted data transmission devices, e.g. using external transmitter or receiver
• CPC Class Codes: A61M 2205/3592 : using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2205/50 : with microprocessors or computers
• CPC Class Codes: A61M 2205/502 : User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/52 : with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/581 : by audible feedback
• CPC Class Codes: A61M 2205/582 : by tactile feedback
• CPC Class Codes: A61M 2205/583 : by visual feedback
• CPC Class Codes: A61M 2205/6018 : providing set-up signals for the apparatus configuration
• CPC Class Codes: A61M 2205/8206 : battery-operated
• 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 2207/00 : Methods of manufacture, assembly or production
• CPC Class Codes: A61M 2209/045 : for filling, e.g. for filling reservoirs
• CPC Class Codes: A61M 2209/086 : Docking stations
• CPC Class Codes: A61M 2230/201 : Glucose concentration
• CPC Class Codes: A61M 5/1413 : Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/142 : Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14212 : Pumping with an aspiration and an expulsion action
• 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 5/1452 : pressurised by means of pistons
• CPC Class Codes: A61M 5/14586 : pressurised by means of a flexible diaphragm
• 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 5/162 : Needle sets, i.e. connections by puncture between reservoir and tube ; Connections between reservoir and tube in jet-action syringes A61M5/30; connectors for tubes having sealed ends and a needle for piercing them A61M39/14
• CPC Class Codes: A61M 5/168 : Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body flow control in general G05D7/00
• CPC Class Codes: A61M 5/16804 : Flow controllers
• 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 5/16813 : by controlling the degree of opening of the flow line
• 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 5/16886 : for measuring fluid flow rate, i.e. flowmeters
• CPC Class Codes: A61M 5/172 : electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/1723 : using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: A61M 5/365 : Air detectors A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626
• CPC Class Codes: A61M 5/5086 : for indicating if defective, used, tampered with or unsterile
• CPC Class Codes: F04B 43/02 : having plate-like flexible members, e.g. diaphragms F04B43/14 takes precedence
• CPC Class Codes: F04B 43/09 : Pumps having electric drive
• CPC Class Codes: F04B 43/1253 : by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
• CPC Class Codes: F04B 7/00 : Piston machines or pumps characterised by having positively-driven valving
• CPC Class Codes: G01F 22/00 : Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
• CPC Class Codes: G05B 23/02 : Electric testing or monitoring
• 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
• CPC Class Codes: G08C 17/02 : using a radio link
• CPC Class Codes: H04B 7/2609 : Arrangements for range control, e.g. by using remote antennas
• CPC Class Codes: Y02A 90/10 : Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
• CPC Class Codes: Y10T 29/49236 : Fluid pump or compressor making
• CPC Class Codes: Y10T 29/494 : Fluidic or fluid actuated device making
• CPC Class Codes: Y10T 29/49412 : with assembly, disassembly or composite article making
• CPC Class Codes: Y10T 29/49826 : Assembling or joining
• CPC Class Codes: Y10T 29/49828 : Progressively advancing of work assembly station or assembled portion of work

Abstract

A wearable infusion pump assembly includes a reservoir for receiving an infusible fluid, and an external infusion set configured to deliver the infusible fluid to a user. A fluid delivery system is configured to deliver the infusible fluid from the reservoir to the external infusion set. The fluid delivery system includes a volume sensor assembly, and a pump assembly for extracting a quantity of infusible fluid from the reservoir and providing the quantity of infusible fluid to the volume sensor assembly. The volume sensor assembly is configured to determine the volume of at least a portion of the quantity of fluid. The fluid delivery system further includes a first valve assembly configured to selectively isolate the pump assembly from the reservoir, and a second valve assembly configured to selectively isolate the volume sensor assembly from the external infusion set.

Claims

1. A wearable infusion pump assembly comprising:

a reservoir for receiving an infusible fluid;

an external infusion set configured to deliver the infusible fluid to a user;

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

a volume sensor assembly;

a pump assembly for extracting a quantity of infusible fluid from the reservoir and providing the quantity of infusible fluid to the volume sensor assembly, wherein the volume sensor assembly is configured to determine the volume of at least a portion of the quantity of fluid;

a first valve assembly configured to selectively isolate the pump assembly from the reservoir; and

a second valve assembly configured to selectively isolate the volume sensor assembly from the external infusion set;

at least one processor; and

a computer readable medium coupled to the at least one processor, the computer readable medium including a plurality of instructions stored thereon which, when executed by the at least one processor, cause the at least one processor to perform operations comprising;

activating the first valve assembly to isolate the pump assembly from the reservoir; and

activating the pump assembly to provide the quantity of infusible fluid to the volume sensor assembly;

wherein the computer readable medium further includes instructions for;

activating the volume sensor assembly to determine the volume of at least a portion of the quantity of fluid provided to the volume sensor assembly from the pump assembly; and

activating the second valve assembly to fluidly couple the volume sensor assembly to the external infusion set;

wherein the fluid delivery system includes an actuator associated with the second valve assembly and activating the second valve assembly includes energizing the actuator; and

wherein the fluid delivery system further includes a bracket assembly configured to maintain the second valve assembly in an activated state.

2. 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.

3. 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.

4. The wearable infusion pump assembly of claim 1 wherein the fluid delivery system includes an actuator associated with the first valve assembly and activating the first valve assembly includes energizing the actuator.

5. The wearable infusion pump assembly of claim 4 wherein the actuator includes a shape memory actuator.

6. The wearable infusion pump assembly of claim 1 wherein the fluid delivery system includes an actuator associated with the pump assembly and activating the pump assembly includes energizing the actuator.

7. The wearable infusion pump assembly of claim 6 wherein the fluid delivery system includes a bell crank assembly for mechanically coupling the pump assembly to the actuator.

8. The wearable infusion pump assembly of claim 6 wherein the actuator includes a shape memory actuator.

9. The wearable infusion pump assembly of claim 1 wherein the fluid delivery system includes a bell crank assembly for mechanically coupling the second valve assembly to the actuator.

10. The wearable infusion pump assembly of claim 1 wherein the actuator includes a shape memory actuator.

11. The wearable infusion pump assembly of claim 1 wherein the computer readable medium further includes instructions for:

activating the bracket assembly to release the second valve assembly from the activated state.

12. The wearable infusion pump assembly of claim 11 wherein activating the bracket assembly includes energizing a bracket actuator associated with the bracket assembly.

13. The wearable infusion pump assembly of claim 12 wherein the bracket actuator includes a shape memory actuator.