Seizure detection using coordinate data

• US 9,220,910 B2
• Filed: 01/07/2014
• Issued: 12/29/2015
• Est. Priority Date: 07/30/2010
• Status: Active Grant

• Current Assignee: LivaNova USA, Inc. (LivaNova Plc)
• Original Assignee: Cyberonics, Inc
• Inventors: Colborn, John C.
• Primary Examiner(s): HINDENBURG, MAX F
• Application Number:
  US14/149,409
• Publication Number:
  US 20140121723A1
• Time in Patent Office: 721 Days
• US Class Current: 1/1
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 2562/0247 Pressure sensors
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/0245 by using sensing means generating electric signals, i.e. ECG signals
• CPC Class Codes: A61B 5/053 Measuring electrical impedance or conductance of a portion of the body
• CPC Class Codes: A61B 5/1112 Global tracking of patients, e.g. by using GPS
• CPC Class Codes: A61B 5/1116 Determining posture transitions
• CPC Class Codes: A61B 5/1118 Determining activity level
• CPC Class Codes: A61B 5/4094 Diagnosing or monitoring seizure diseases, e.g. epilepsy
• CPC Class Codes: A61B 5/4836 Diagnosis combined with treatment in closed-loop systems or methods A61B5/0036 takes precedence
• CPC Class Codes: A61B 5/6833 Adhesive patches
• CPC Class Codes: A61B 5/6847 mounted on an invasive device
• CPC Class Codes: A61N 1/36064 Epilepsy
• CPC Class Codes: A61N 1/36114 Cardiac control, e.g. by vagal stimulation stimulating the heart A61N1/362
• CPC Class Codes: A61N 1/36139 with automatic adjustment
• CPC Class Codes: A61N 1/37252 Details of algorithms or data aspects of communication system, e.g. handshaking, transmitting specific data or segmenting data
• CPC Class Codes: A61N 1/37282 characterised by communication with experts in remote locations using a network
• CPC Class Codes: G16H 20/30 relating to physical therapies or activities, e.g. physiotherapy, acupressure or exercising
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: G16H 40/63 : for local operation
• CPC Class Codes: G16H 40/67 : for remote operation
• CPC Class Codes: G16H 50/20 : for computer-aided diagnosis, e.g. based on medical expert systems

Abstract

A seizure detection device includes a coordinate data interface configured to receive coordinate data for a human, a memory to store coordinate data for a defined location of the human, and a seizure detector configured to identify a seizure event responsive to the coordinate data.

Claims

1. A system comprising:

an implantable medical device suitable for implantation into a human body;

a coordinate data interface configured to receive coordinate data for the human body;

a sensor configured to detect body signal data from the human body;

a memory configured to store the coordinate data interface and the body signal data; and

activation circuitry configured to activate the implantable medical device in response to detecting an event based on the coordinate data and the body signal data.

2. The system of claim 1, wherein the coordinate data interface comprises at least one of a proximity sensor, a motion sensor, an acoustic broadcast sensor, and a radio-frequency transmitter.

3. The system of claim 1, wherein the implantable device comprises a pulse generation device for nerve stimulation, and wherein the activation circuitry comprises:

seizure detection circuitry configured to determine at least one body parameter from the body signal data and configured to compare the at least one body parameter to a seizure threshold; and

threshold determining circuitry to determine the seizure threshold dynamically based upon the coordinate data.

4. The system of claim 1, wherein at least one of the coordinate data interface, the sensor, and the activation circuitry are external to the human body.

5. The system of claim 4, wherein the activation circuitry is external to the human body and further comprising a communication element that includes an antenna portion configured to transmit and receive wireless communication signals between the implantable device and the activation circuitry.

6. The system of claim 1, further comprising a cellular device housing at least one of the coordinate data interface and the activation circuitry.

7. The system of claim 1, wherein the coordinate data includes global positioning system data from a global positioning system, local coordinate system data from a local coordinate system, or both.

8. The system of claim 7, wherein the coordinate data includes time data, velocity data, acceleration data, or a combination thereof.

9. The system of claim 1, wherein the memory is further configured to store movement data of the human body based on the coordinate data, wherein the event comprises a seizure event, and wherein the seizure event is detected in the human body based on the coordinate data and an amount of movement of the human body.

10. The system of claim 9, wherein the memory is further configured to log seizure event data associated with the coordinate data.

11. The system of claim 9, further comprising an antenna portion, wherein seizure event data is sent to an external communication device via the antenna.

12. The system of claim 1, wherein the memory is further configured to store input data indicating an activity being performed by the human body.

13. The system of claim 12, wherein the input data further indicates a location where the activity is being performed based on the coordinate data.

14. A system comprising:

a medical device suitable for monitoring a patient;

a coordinate data interface configured to receive coordinate data relative to the patient;

a sensor configured to detect body signal data from the patient;

a memory configured to store the coordinate data and the body signal data; and

activation circuitry configured to activate the medical device in response to detecting an event based on the coordinate data and the body signal data.

15. The system of claim 14, wherein the coordinate data includes global positioning system data from a global positioning system, local coordinate system data from a local coordinate system, or both.

16. The system of claim 15, wherein the local coordinate system comprises at least one of a proximity sensor, a motion sensor, an acoustic broadcast sensor, and a radio-frequency transmitter.

17. The system of claim 15, wherein the coordinate data includes time data, velocity data, data, acceleration data, or a combination thereof, and wherein the activation circuitry is configured to determine whether the patient is traveling in a vehicle based on the coordinate data.

18. The system of claim 14, wherein the memory is further configured to store movement data of the patient based on the coordinate data, wherein the event comprises a seizure event, and wherein the seizure event is detected in the patient based on the coordinate data and an amount of movement of the patient.

19. The system of claim 14, wherein the medical device is configured to stimulate a nerve of the patient after being activated by the activation circuitry.

20. A method, comprising:

monitoring a patient that has a medical device;

receiving coordinate data relative to the patient via a coordinate data interface;

detecting body signal data from the patient;

storing, at a memory device, the coordinate data from the coordinate data interface and the body signal data; and

activating the medical device in response to detecting an event based on the coordinate data and the body signal data.