Alarm unit for monitoring or detection of an analyte

• US 8,237,573 B2
• Filed: 11/15/2010
• Issued: 08/07/2012
• Est. Priority Date: 03/25/2010
• Status: Expired due to Fees

• Current Assignee: The Theos Medical Systems
• Original Assignee: The Theos Medical Systems
• Inventors: Bhatia, Saket S., Davis, Darrell E., Bhatia, Ankush S.
• Primary Examiner(s): Bugg, George
• Assistant Examiner(s): MCNALLY, KERRI L
• Application Number:
  US12/946,851
• Publication Number:
  US 20110234412A1
• Time in Patent Office: 631 Days
• Field of Search: 340/573.5
• US Class Current: 340/573.5
• CPC Class Codes: A61F 13/42 with wetness indicator or alarm
• CPC Class Codes: A61F 5/48 Devices for preventing wetting or pollution of the bed

Abstract

In one example embodiment, an alarm unit for monitoring or detecting presence of an analyte on an analyte sensor comprises a square plastic casing protecting the alarm electronics portion and including a signal processing means, a clip attachment means configured to be separated and attached from the casing and used to attach the unit to clothing. The clip attachment has enough clearance to be used with thick articles of clothing including diapers and has a set of teeth frictionally held against a rubber strip portion located on the casing back so as to also enable secure attachment to very thin articles of clothing. The alarm unit may further comprise a three-way switch located externally for easy alarm chime and alarm volume selection. Interdependent modes of operation may enable the signal processing means to control the alarm unit operation and features including low power indication, improper cable plug installment, three-way switch deactivation during Monitor mode, and a snooze/reset feature by which the alarm is disabled temporarily so that, as an example, a user can focus on running to the bathroom where the device is used to treat enuresis.

Claims

1. A system for monitoring and detection of an analyte, the system comprising:

a signal processing unit configured to control an alarm unit in various modes of operation;

an attachment device configured to attach the alarm unit to a clothing item of a user;

an analyte sensor configured to be connected to the signal processing unit, the signal processing unit configured to verify the connection; and

a power source to supply power to the alarm unit, the signal processing unit configured to determine, based on predetermined criteria, whether the power is sufficient to operate the alarm unit, wherein the connection includes an electric cable connecting the signal processing unit to the analyte sensor via an electric cable plug inserted into an electric jack of the analyte sensor.

2. The system of claim 1, wherein, based on results of the verification of the connection of the signal processing unit to the analyte sensor, the signal processing unit generates an input signal to the alarm unit to actuate the alarm unit in a predetermined combination of a sound, a vibration, and light as to indicate to the user whether the connection is active, the signal processing unit not being able to enter into a monitor mode unless the connection is active.

3. The system of claim 1, wherein the various modes include a power up mode in which the signal processing unit determines, based on predetermined parameters, whether the power source has sufficient power to operate the alarm.

4. The system of claim 1, wherein the various modes include an alarm setup mode, the alarm set up mode enabling the user to select one or more of the following:

an alarm volume, an alarm tone, a vibration mode.

5. The system of claim 1, wherein the various modes include a monitor mode in which the signal processing unit detects a change in a current state across electrodes of the analyte sensor.

6. The system of claim 1, wherein the various modes include an alarm mode, the alarm mode being activated by an input signal from the signal processing unit and a signal indicating the change in the current state across the electrodes of the analyte sensor is detected.

7. The system of claim 1, wherein the alarm unit is temporarily deactivated by delaying its actuation.

8. The system of claim 1, wherein the power source includes a battery.

9. The system of claim 1, wherein the signal processing unit is encased in a protective plastic casing, the protective plastic casing being attached to clothing worn by the user with a clip.

10. The system of claim 1, wherein the signal processing unit is configured to receive an input signal from an electric jack via a plug attached to an electrical cable, the electrical cable being inserted into the electric jack and connected to the signal processing unit and capable of carrying an electric current through and from the analyte sensor.

11. The system of claim 1, where the alarm unit is configured to generate one or more of the following:

an audible alarm, a vibrating alarm, a light.

12. The system of claim 1, wherein upon determining that the power is insufficient to operate the alarm unit, the signal processing unit generates an input signal to the alarm unit so as to actuate the alarm unit in a predetermined arrangement of sound, vibration and light to indicate to the user that the power source is insufficient.

13. The system of claim 1, further comprising a three-way switch configured to connect to the signal processing unit, wherein the three way switch is comprised internally of three distinct switches;

the three way switch is attached to a plastic ridged semicircular handle portion that extends somewhat outside of the casing for easy finger manipulation;

the three way switch only functions in an alarm setup mode whereby it is deactivated by the signal processing unit upon exiting the alarm setup mode;

the handle portion manipulates the three switches by being pushed in the up, down, or inward direction in order to choose between and select alarm volume and chime type settings;

the lowest volume setting results in no audible alarm volume with lights and vibrate only; and

the three way switch is deactivated when the signal processing unit goes from Alarm Setup mode to Monitor mode after establishing that;

the electric cable plug is inserted properly;

that there is no analyte present on the analyte sensor;

that the power source has sufficient power; and

that the user has set the desired alarm settings.

14. The system of claim 1, further comprising a clip, the clip comprising a plastic body portion and a plastic perpendicular casing attachment portion comprised in part of two equally spaced apart attachment arm portions that extend downward from the plane of the casing attachment portion and include a tab portion or portions located on the inner surfaces of the downward extending attachment arm portions whereby the tab portions face each other, and wherein the clip comprises a set of parallel semicircular teeth at its bottom end that extend downward from the plastic body portion and that terminate in roughened plastic edges, and wherein a tooth bridge portion extends perpendicularly to and is attached between and to the parallel teeth so that the parallel teeth support the tooth bridge portion and whereby the bottom surfaces of the parallel teeth and the tooth bridge are aligned so as to form an elongated contact point for crimping a portion of clothing between the elongated contact point and a rubber or silicone strip portion located on the casing back, and wherein the plastic body portion top end and the bottom end occupy different horizontal planes whereby the distance between the planes is roughly equivalent to the size of the downward extension dimension of the teeth portions, and wherein the plastic body portion top end and the casing attachment portion lay flat against the back surface of the casing, and wherein the casing attachment portion acts as a fulcrum between the plastic body portion top end and bottom end during use of the clip whereby the clip teeth are lifted upwards so as to receive clothing or diaper material between the teeth and the casing back surface.

15. The system of claim 14, further comprising a casing, the casing comprising plastic, is substantially square or rectangular shaped and has rounded corners, and wherein:

the left and right side portions of the casing each contain a recessed slot portion whereby a tab portion or portions located on attachment arms of the clip may be inserted so as to enable the left and right slot portions to frictionally attach the casing to the clip; and

a rubber or silicone strip portion is positioned on the casing back underneath the point of contact with a clip teeth and tooth bridge.

16. The system of claim 1, wherein the alarm unit is configured to detect whether the analyte sensor is accidently disconnected from the signal processing unit.

17. The system of claim 1, comprising an alarm delaying means wherein the alarm unit is temporarily deactivated after having been activated due to presence of an analyte on the sensor during Monitor mode and whereby the alarm delaying means comprises:

a switch with a plastic button portion that extends through the casing for external operation;

an arrangement and configuration of circuit elements that, in use, connect the switch to the signal processing unit; and

activation of the switch by the user during Alarm mode generates a suitable input signal from the signal processing unit to a timer whereby;

the timer removes power to the alarm unit;

the timer may perform a full count after which power to the alarm unit is restored; and

the timer may be disabled by removal of the electric cable plug from the electric jack and then reinsertion of the electric cable plug into the electric jack after the analyte has been removed from the analyte sensor portion.