Remote monitoring of absorbent article

Patent metadata

Field	Value
Publication number	US-9918884-B2
Application number	US-201514693427-A
Country	US
Kind code	B2
Filing date	Apr 22, 2015
Priority date	Apr 22, 2015
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

In one example, a sensor system of a patient monitoring system includes a voiding sensor that includes an electrical circuit configured to be transitioned from a first impedance state to a second impedance state in response to a voiding event in an absorbent region of an absorbent article worn by a patient. The sensor system also includes one or more processors configured to: determine, based on whether the impedance state of the electrical circuit is open or closed, that the voiding event has occurred; and generate, based at least in part on the occurrence of the voiding event, patient status data of the patient. The sensor system also includes a communication module configured to wirelessly transmit, via a relay module, the patient status data to a remote monitoring device that is distinct from the relay module.

First claim

What is claimed is:

1. A patient monitoring system comprising a sensor system, the sensor system comprising:
a voiding sensor comprising an electrical circuit configured to be transitioned from a first impedance state to a second impedance state in response to a voiding event in an absorbent region of an absorbent article wearable by a patient, wherein the electrical circuit is either open or closed in the first impedance state and the other of open or closed in the second impedance state;
one or more motion sensors configured to generate motion data indicative of motion of the patient;
a communication module; and
one or more processors configured to:
determine, based on whether the impedance state of the electrical circuit is open or closed, that the voiding event has occurred,
generate, based at least in part on the occurrence of the voiding event, first patient status data of the patient,
cause the communication module to transmit, via a relay module and to a remote monitoring device that is distinct from the relay module, the first patient status data,
determine, based at least in part on the motion data, patient motion or posture state,
generate, based at least in part on the patient motion or posture state, second patient status data, and
responsive to determining that a current time is within a predetermined time of day, cause the communication module to transmit, via the relay module and to the remote monitoring device, the second patient status data.

2. The system of claim 1 , wherein the electrical circuit is open in the first impedance state and closed in the second impedance state.

3. The system of claim 2 , wherein the electrical circuit comprises a first electrically conductive pathway and a second electrically conductive pathway configured to conduct in response to the voiding event such that the electrical circuit closes in response to the voiding event.

4. The system of claim 3 , wherein the first and second electrically conductive pathways each comprise at least one of: an electrically conductive ink and an electrically conductive wire.

5. The system of claim 1 , wherein the electrical circuit is closed in the first impedance state and open in the second impedance state.

6. The system of claim 5 , wherein the electrical circuit comprises an electrically conductive pathway that comprises an electrically conductive material configured to at least partially dissolve in response to the voiding event such that the electrical circuit opens in response to the voiding event.

7. The system of claim 1 , wherein the one or more processors are further configured to:
determine, based on motion data, whether an activity level of the patient satisfies an activity level threshold, and
cause the communication module to transmit, responsive to the activity level of the patient satisfying the activity level threshold, the second patient status data.

8. The system of claim 1 , wherein the one or more processors are further configured to cause the communication module to transmit, responsive to the posture state being a sitting posture state or a standing posture state, the second patient status data.

9. The system of claim 1 , wherein the one or more motion sensors comprise an accelerometer.

10. The system of claim 1 , wherein the relay module comprises:
a receiver configured to wirelessly receive, via a wireless relay network and from the sensor system, the first and second patient status data;
a first transmitter configured to wirelessly transmit the first and second patient status data over an internet-accessible wireless communications network;
a second transmitter configured to wirelessly transmit the first and second patient status data to a second wireless relay module over the wireless relay network; and
one or more processors coupled to the first and second transmitters, the one or more processors being configured to select one of the first transmitter or the second transmitter for transmitting the received first and second patient status data.

11. The system of claim 10 , wherein the receiver is configured to wirelessly receive the first and second patient status data over the wireless relay network from a plurality of sensor systems.

12. The system of claim 1 , further comprising the absorbent article, wherein the voiding sensor is configured to be attached to the absorbent article.

13. A method of monitoring a patient status, the method comprising:
transitioning, by an electrical circuit of a voiding sensor of a sensor system, from a first impedance state to a second impedance state in response to a voiding event in an absorbent region of an absorbent article worn by a patient, wherein the electrical circuit is either open or closed in the first impedance state and the other of open or closed in the second impedance state;
determining, by one or more processors of the sensor system and based on whether the impedance state of the electrical circuit has transitioned, that the voiding event has occurred;
generating, by the one or more processors and based at least in part on the occurrence of the voiding event, first patient status data of the patient;
wirelessly transmitting, by a communication module of the sensor system and via a relay module that is distinct from the sensor system, the first patient status data to a remote monitoring device that is distinct from the relay module;
determine, based at least in part on motion data generated by one or more motion sensors of the sensor system, patient motion or posture state, the motion data indicative of motion of the patient;
generate, based at least in part on the patient motion or posture state, second patient status data; and
responsive to determining that a current time is within a predetermined time of day, transmit, by the communication module and via the relay module, the second patient status data to the remote monitoring device.

14. The method of claim 13 , wherein the electrical circuit is open in the first impedance state and closed in the second impedance state.

15. The method of claim 13 , wherein the electrical circuit is closed in the first impedance state and open in the second impedance state.

16. The method of claim 13 , further comprising:
determining, based at least on the motion data, whether an activity level of the patient satisfies an activity level threshold; and
wirelessly transmitting the second patient status data in response to the activity level of the patient satisfying the activity level threshold.

17. A non-transitory computer-readable storage medium storing instructions that, when executed, cause one or more processors of a sensor system to:
determine, based on whether an impedance state of an electrical circuit of the sensor system has transitioned from a first impedance state to a second impedance state, that a voiding event has occurred, wherein the electrical circuit is configured to transition from the first impedance state to the second impedance state in response to the voiding event in an absorbent region of an absorbent article worn by a patient, and wherein the electrical circuit is either open or closed in the first impedance state and the other of open or closed in the second impedance state;
generate, based at least in part on the occurrence of the voiding event, first patient status data of the patient;
cause a communication module of the sensor system to wirelessly transmit, via a relay module that is distinct from the sensor system, the first patient status data to a remote monitoring device that is distinct from the relay module;
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Assignees

• Covidien Lp
• Kpr Us Llc

Inventors

• Patel Harish
• Gaines Robert
• Narvekar Vishal
• Gahan Richard

Classifications

• A61B2503/08

  Elderly · CPC title

• A61B5/6808

  Diapers · CPC title

• A61B5/1116

  Determining posture transitions · CPC title

• A61B5/0002

  Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network (endoradiosondes A61B5/07) · CPC title

• A61F13/42 Primary

  with wetness indicator or alarm · CPC title