Brain impact measurement system

• US 20090000377A1
• Filed: 06/27/2008
• Published: 01/01/2009
• Est. Priority Date: 06/29/2007
• Status: Abandoned Application

• Current Assignee: Meggitt San Juan Capistrano Inc. (Parker-Hannifin Corporation)
• Original Assignee: Meggitt San Juan Capistrano Inc. (Parker-Hannifin Corporation)
• Inventors: Shipps, J. Clay, Bonfeld, Jesse, Andic, Hikmet
• Application Number:
  US12/163,395
• Publication Number:
  US 20090000377A1
• Time in Patent Office: Days
• US Class Current: 73/514.160
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 5/11 Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb for measuring pulse A61B5/02 ;A61B5/1038 takes precedence; motion detection to correct for motion artifacts in physiological signals A61B5/721
• CPC Class Codes: A61B 5/4064 Evaluating the brain A61B5/031, A61B5/369, A61B5/14553 take precedence
• CPC Class Codes: A61B 5/4076 Diagnosing or monitoring particular conditions of the nervous system A61B5/4821, A61B5/4824 take precedence
• CPC Class Codes: A61B 5/6814 Head
• CPC Class Codes: A61B 5/6817 Ear canal
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence

Abstract

A brain and/or skull impact measurement system has a body mounted impact device. The body mounted impact device includes a tri-axial accelerometer configured to measure impacts to an individual'"'"'s body where the sensor produces impact data in response to the impact. A reader is provided with a data processor and a transmitter/receiver that receives the impact data. The reader is coupled to the body mounted impact device and can be a handheld device.

Claims

1. A brain and/or skull impact measurement system, comprising:

a body mounted impact device that includes a triaxial accelerometer configured to measure impacts to an individual'"'"'s body, the sensor producing impact data in response to the impact; and

a reader with a data processor with a transmitter/receiver that receives the impact data, the reader being coupled to the body mounted impact device, wherein the reader can be a handheld device.

2. The system of claim 1, wherein the reader visually displays the impact data.

3. The system of claim 1, wherein the body mounted impact device includes sensor interface electronics, a data processor, a transmitter/receiver and a power source.

4. The system of claim 1, wherein the power source is a battery.

5. The system of claim 4, wherein the battery is a rechargeable battery.

6. The system of claim 1, wherein the body mounted impact device is located close to the individual'"'"'s brain and/or skull to provide for measurement of an impact to the head.

7. The system of claim 1, further comprising:

a transfer function that estimates an impact to the brain and/or skull as a function of an impact measured at another location of the individual'"'"'s body.

8. The system of claim 1, wherein the sensor has dimensions on the order of about 1-2 millimeters on all sides.

9. The system of claim 1, wherein the sensor is configured to measure forces of at least 10s of g'"'"'s in each of three directions (X, Y, Z).

10. The system of claim 1, wherein the sensor is configured to measure forces of at least 150 g'"'"'s in each of three directions (X, Y, Z).

11. The system of claim 1, wherein the sensor includes electronics that provide for interfacing with a logic device.

12. The system of claim 11, wherein the logic device is selected from at least one of, a micro-controller, DSP and an FPGA.

13. The system of claim 1, wherein a data processor converts analog signals emanating from X, Y, and Z channels of the accelerometer resulting from an impact to digital signals.

14. The system of claim 13, wherein the digital signals are scaled based on a sensitivity of the accelerometer and convert the digital signals to a g level.

15. The system of claim 14, wherein g levels of different impacts over time are stored in a memory section of the data processor or in an external memory chip.

16. The system of claim 1, wherein each of an impact measurement is time and date stamped, and coded with an individual'"'"'s identification number.

17. The system of claim 1, wherein each system stores a unique number assigned to each individual that has to be monitored.

18. The system of claim 1, wherein the reader includes a micro-controller with memory, and the transmitter/receiver is an ultrasonic transmitter/receiver.

19. The system of claim 18, wherein the system has a natural resonance in an ultrasonic frequency range that is excited by a low level voltage signal at a resonance of the transmitter/receiver.

20. The system of claim 19, wherein the ultrasonic frequency range is greater than 20 kHz.

21. The system of claim 1, wherein the system uses a communication protocol with a secure algorithm.

22. The system of claim 1, wherein the body mounted device is sized to be placed in an earplug.

23. The system of claim 1, wherein the body mounted device is in a patch worn on a skin surface.

24. The system of claim 1, wherein the body mounted device is embedded at one of, a helmet, goggles, under the skin, and in a false filling in a tooth.

25. The system of claim 1, wherein transmission or receive from the body mounted impact device to the reader is with at least one of, RF, optical, IR, audio, directly connecting the body mounted impact device to the reader hand held device via wires and a connector or a station in which the body mounted device was plugged into to download the information.

26. The system of claim 1, wherein the hand held device includes, a handheld computer, an interface card and a Graphical User Interface (GUI).

27. The system of claim 26, wherein the handheld computer includes one or more built-in extension ports that that provide interface with a data acquisition card or a communication card.

28. The system of claim 26, wherein the GUI is configured to query and record date from the body mounted impact device.

29. The system of claim 26, wherein the hand held device is a field deployable computer.

30. The system of claim 11 wherein the body impact results in trauma to the individual.

31. The system of claim 30, wherein the impact is detected by the sensor and the trauma is determined in response to one or more previously defined events.

32. The system of claim 31, wherein the previously defined event is a g level above a threshold.

33. The system of claim 1, wherein in response to the impact the hand held device interrogates the body mounted device with ultrasonic transmission from a transmitter/receiver of the hand held device.

34. The system of claim 1, wherein the body mounted device does not respond or transmit data unless it receives a secure ultrasonic transmission at an ultrasonic frequency that it is tuned too.

35. The system of claim 34, wherein after the body mounted device receives the ultrasonic transmission, the body mounted device initiates a data recovery and transmits the data recovery to the transmitter/receiver.

36. The system of claim 34, where the hand held device stores information from the data recover and displays events in terms of magnitude and direction of the impact.

37. The system of claim 36, wherein the hand held device further displays at least one of, time and date of impact, and individual identification number.

38. The system of claim 33, wherein a portion of data from the data recovery is loaded to a central database.

39. A brain and/or skull impact measurement system, comprising:

a body mounted impact device that includes an acceleration sensor configured to measure impacts to an individual'"'"'s body, the sensor producing impact data in response to the impact; and

a reader with a data processor with a transmitter/receiver that receives the impact data, the reader being coupled to the body mounted impact device, wherein the reader can be a handheld device.

40. The system of claim 39, wherein the acceleration sensor includes an over-pressure sensor and a temperature sensor.