Infusion pump system and method

• US 8,454,557 B1
• Filed: 07/19/2012
• Issued: 06/04/2013
• Est. Priority Date: 07/19/2012
• Status: Active Grant

• Current Assignee: Insulet Corporation
• Original Assignee: Asante Solutions, Inc (Abbott Laboratories)
• Inventors: Qi, Wenkang, Brewer, Tracy, Crommenacker, Hans
• Primary Examiner(s): VU, QUYNH-NHU HOANG
• Application Number:
  US13/553,027
• Time in Patent Office: 320 Days
• Field of Search: 604/67, 604131-133, 604/141, 604151-152, 604154-158
• US Class Current: 604/67
• CPC Class Codes: A61M 2005/14264 with means for compensating influence from the environment
• CPC Class Codes: A61M 2039/1005 Detection of disconnection
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• 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 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/5086 for indicating if defective, used, tampered with or unsterile

Abstract

Some embodiments of an infusion pump system may be configured to detect when at least one component of the pump system is exposed to an impact above a threshold level. In particular embodiments, the infusion pump system can be equipped with an impact detection system that can sense when an impact above the threshold level has occurred to the pump device, which thereby enables the infusion pump system to initiate appropriate patient safety countermeasures.

Claims

1. A portable infusion pump system, comprising:

a pump device including a pump housing that defines a space to receive a medicine, a drive system positioned in the pump housing to dispense the medicine from the pump device when the medicine is received in the space of the pump housing, and a drop detection mechanism mechanically mounted to a component of the pump housing, wherein the drop detection mechanism shifts from a first configuration to a second configuration in response to an impact on the pump housing that is greater than or equal to a predetermined threshold level;

wherein the drop detection mechanism comprises a weighted member suspended in a spaced from one or more electrically conductive wires coupled to a circuit, wherein the drop detector mechanism shifts from the first configuration to the second configuration when at least one of the wires is broken; and

a controller device removably attachable to the pump housing so as to electrically connect with the pump device, wherein the controller device houses control circuitry configured to communicate with the drive system positioned in the pump housing to control dispensation of the medicine from the pump device.

2. The portable infusion pump system of claim 1, wherein the drop detection mechanism is connected to a first portion of a drop detection circuit housed in the pump housing, the first portion of a drop detection circuit being in electrical communication with a second portion of a drop detection circuit housed in the controller device.

3. The portable infusion pump system of claim 2, wherein the drop detection circuit is in electrical communication with the control circuitry housed in the controller device so that the control circuitry initiates an alarm when the drop detection circuit indicates the drop detection mechanism is in the second configuration.

4. The portable infusion pump system of claim 1, wherein, in response to the drop detection mechanism shifting from the first configuration to the second configured, the control circuitry is configured to disable the drive system, activate an audible alarm, and display of one or more messages on a user interface display located on the controller device.

5. The portable infusion pump system of claim 1, wherein the drop detection mechanism comprises one or more magnetic members engaged with a portion of a drop detection circuit, wherein the drop detector mechanism shifts from the first configuration to the second configuration when the one or more magnetic members are disengaged from the portion of the drop detection circuit.

6. The portable infusion pump system of claim 1, wherein the pump device is a one-time-use device equipped with one or more structures configured to prevent reuse of the pump device, wherein the pump housing includes an interior wall that defines a space to slidably receives an outer wall of a pre-filled medicine cartridge insertable through an opening defined by the pump housing, wherein the pump device further comprises a cap device that directly engages with the pump housing to enclose the pre-filled medicine cartridge in the pump housing when the pre-filled medicine cartridge is received in the space of the pump housing, and wherein the controller device is a reusable controller device including:

a controller housing that is removably attachable to the pump housing in a fixed relationship;

one or more electrical contacts disposed on the controller housing, the electrical contacts of the controller device being engageable with corresponding electrical contacts of the pump device when removably attached.

7. A medical infusion pump system, comprising:

a portable housing defining a space to receive a medicine;

a pump drive system to dispense medicine from the portable housing when the medicine is received in the space;

control circuitry that electrically communicates with the pump drive system to control dispensation of the medicine from the portable housing when the medicine is received in the space;

a drop detector mechanism mechanically mounted to the portable housing and in electrical communication with the control circuitry, wherein the control circuitry disables the pump drive system in response to the drop detector mechanism detecting an impact to the portable housing that is greater than or equal to a predetermined threshold level; and

wherein the drop detection mechanism comprises a weighted member suspended in a spaced from one or more electrically conductive wires coupled to a circuit, wherein the drop detector mechanism shifts from the first configuration to the second configuration when at least one of the wires is broken.

8. The medical infusion pump system of claim 7, wherein the drop detector mechanism is configured to respond to the impact to the portable housing that is greater than or equal to the predetermined threshold level, and wherein the control circuitry is in electrical communication with the drop detector mechanism so that the control circuitry initiates an alarm when the drop detector mechanism indicates an exposure of the impact to the portable housing that is greater than or equal to the predetermined threshold level.

9. The medical infusion pump system of claim 8, wherein the drop detector mechanism comprises a weighted member suspended in an interior space from one or more electrically conductive wires coupled to a drop detection circuit, and wherein the drop detector mechanism is configured to respond to the impact that is greater than or equal to the predetermined threshold level by shifting from a first configuration in which the one or more wires are unbroken to a second configuration in which at least one of the wires is broken.

10. The medical infusion pump system of claim 8, wherein the drop detector mechanism comprises one or more magnetic members engaged with a portion of a drop detection circuit, and wherein the drop detector mechanism is configured to respond to the impact that is greater than or equal to the predetermined threshold level shifting the one or more magnetic members to a disengaged position relative to the drop detection circuit.

11. The medical infusion pump system of claim 7, wherein the drop detector mechanism comprises one or more accelerometers.

12. The medical infusion pump system of claim 7, wherein the control circuitry initiates an audible alarm in response to the drop detector mechanism detecting an impact to the portable housing that is greater than or equal to a predetermined threshold level.

13. The medical infusion pump system of claim 12, wherein, in response to the drop detector mechanism detecting an impact to the portable housing that is greater than or equal to a predetermined threshold level, the control circuitry causes a display of one or more alert messages on a user interface display located on the infusion pump system and causes an inspection light to illuminate, the inspection light being different from the user interface display.

14. The medical infusion pump system of claim 7, wherein the control circuitry is housed in a controller housing that is removably attachable to the portable housing.

15. The medical infusion pump system of claim 14, wherein the pump drive system is housed in the portable housing, and one or more electrical contacts disposed on the controller housing are engageable with corresponding electrical contacts disposed on the portable housing when the controller housing is removably attached to the portable housing.

16. A method of controlling a portable infusion pump system, comprising:

sensing that a drop detector mechanism mounted to a portable infusion pump system indicates an impact greater than or equal to a predetermined threshold level was applied to the portable infusion pump system;

wherein the drop detection mechanism comprises a weighted member suspended in a spaced from one or more electrically conductive wires coupled to a circuit, wherein the drop detector mechanism shifts from the first configuration to the second configuration when at least one of the wires is broken; and

in response to the sensing that the drop detector mechanism indicates said impact, disabling a pump drive system housed in the portable infusion pump system.

17. The method of claim 16, further comprising in response to the sensing that the drop detector mechanism indicates said impact, emitting an audible alarm.

18. The method of claim 17, further comprising in response to the sensing that the drop detector mechanism indicates said impact, displaying one or more alert messages on a user interface display of the portable infusion pump system.

19. The method of claim 18, further comprising in response to the sensing that the drop detector mechanism indicates said impact, activating a light source of the portable infusion pump system that is different from the user interface display.