Sensor detection pads with integrated fuse

• US 10,620,149 B2
• Filed: 05/25/2017
• Issued: 04/14/2020
• Est. Priority Date: 04/03/2014
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Ruelas, Jose J., Choy, David Y.
• Primary Examiner(s): Sines, Brian J.
• Application Number:
  US15/605,740
• Publication Number:
  US 20170261462A1
• Time in Patent Office: 1,055 Days
• CPC Class Codes: G01N 27/327 Biochemical electrodes , e.g. electrical or mechanical details for in vitro measurements

Abstract

A monitor system to monitor a characteristic of a user is disclosed. A monitor system includes a sensor producing signals indicative of glucose characteristics within the user. The sensor has a connector with a plurality of contacts, at least two contacts being shorted by a fuse trace. The monitor system further includes an electronics package with a package housing. The package housing contains a battery, a package port interfaced with the connector to receive signals from the sensor, and a package processor to process the signals from the sensor. Further included in the monitor system is a fuse system controlled by the package processor that includes a fuse timer, wherein the fuse trace is destroyed after the fuse timer reaches a threshold value.

Claims

1. A monitor system to transmit a real-time characteristic of a user, the system comprising:

a sensor to produce signals indicative of a glucose characteristic measured in the user, the sensor comprising a connector;

at least one element of a fuse system implemented on the connector, the at least one element of the fuse system comprising at least two contacts shorted by a fuse trace, the fuse trace comprising narrowing material that also makes up the at least two contacts; and

an electronics package coupled to the sensor to receive signals produced from the sensor, the electronics package comprising;

a transmitter;

a package port interfaced with the connector to receive the signals produced from the sensor,

a fuse timer; and

a package processor programmed to execute instructions of machine readable program code stored in non-volatile memory, wherein execution of the instructions causes the package processor to perform steps comprising;

processing the signals produced from the sensor and transmitting the processed signals via the transmitter,

controlling the fuse system,

wherein, in response to detecting that the package port is interfaced with the connector of the sensor, initiating the fuse timer for a specified time, and

causing the fuse trace to be destroyed upon the fuse timer reaching a threshold value.

2. The monitor system as described in claim 1, wherein the sensor is initialized and confirmed by the electronics package before the fuse timer is initiated.

3. The monitor system as described in claim 2, wherein the sensor is initialized in response to detection of the at least two contacts being shorted by the fuse trace, wherein destruction of the fuse trace removes the short thereby preventing reuse and re-initialization of the sensor.

4. The monitor system as described in claim 3, wherein the fuse system further includes a capacitor.

5. The monitor system as described in claim 4, wherein the package processor is programmed to execute instructions further comprising charging the capacitor prior to the fuse timer reaching the threshold value.

6. The monitor system as described in claim 5, wherein upon reaching the fuse timer threshold value the capacitor is discharged to destroy the fuse trace.

7. The monitor system as described in claim 6, wherein upon destroying the fuse trace the electronics package initiates a second timer, the second timer having a limit of time before the sensor stops functioning.

8. The monitor system as described in claim 7, wherein an alarm indicates the second timer has been initiated, the alarm providing feedback until the limit of time has been reached and the sensor stops functioning.

9. The monitor system as described in claim 8, wherein the alarm comprises visual feedback provided by a flashing LED.

10. A monitor system comprising:

a sensor to produce signals indicative of a real-time characteristic of a user, the sensor comprising a connector;

at least one element of a fuse system implemented on the connector, the at least one element of the fuse system comprising at least two contacts shorted by a fuse trace, the fuse trace comprising narrowing material that also makes up the at least two contacts; and

an electronics package interfaced with the connector to receive signals produced from the sensor, the electronics package comprising;

a transmitter;

a fuse timer; and

a package processor programmed to execute instructions of machine readable program code stored in non-volatile memory, wherein execution of the instructions causes the package processor to perform steps comprising;

processing the signals produced from the sensor and transmitting the processed signals via the transmitter,

controlling the fuse system,

wherein, in response to detecting that the electronics package is interfaced with the connector of the sensor, initiating the fuse timer for a specified time, and

causing the fuse trace to be destroyed upon the fuse timer reaching a threshold value.

11. The monitor system of claim 10, wherein the electronics package comprises a package housing that houses a power source, the package processor and the transmitter.

12. The monitor system of claim 10, wherein the electronics package further comprises a feedback indicator.

13. The monitor system of claim 12, wherein the feedback indicator further comprises a light element, an audible tone or a vibration alarm.

14. The monitor system of claim 12, wherein the feedback indicator is adapted to provide feedback regarding a hydration level of the sensor.

15. The monitor system of claim 12, wherein the feedback indicator is adapted to provide feedback indicating that the electronics package is not fully charged.

16. The monitor system of claim 10 wherein the transmitter additionally functions as a receiver allowing two way communication between the electronics package and an infusion pump.

17. The monitor system of claim 10, wherein the fuse system further comprises a switch and a capacitor, wherein upon closing the switch, the capacitor discharges energy to break the fuse trace.

18. The monitor system of claim 17, wherein, upon determining that the specified time has elapsed, the capacitor charges and discharges into the at least two contacts shorted by the fuse trace thereby breaking the fuse trace.

19. The monitor system of claim 18, wherein the produced signals from the sensor continue until the sensor is disconnected or until a second specified time has elapsed.