3-DIMENSIONAL MINIMALLY INVASIVE SPINAL IMAGING SYSTEM AND METHOD

• US 20140257140A1
• Filed: 05/23/2014
• Published: 09/11/2014
• Est. Priority Date: 09/10/2010
• Status: Abandoned Application

• Current Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Original Assignee: Warsaw Orthopedic Incorporated (Medtronic Plc)
• Inventors: Brown, Richard L., Herrmann, Erik J.
• Application Number:
  US14/286,598
• Publication Number:
  US 20140257140A1
• Time in Patent Office: Days
• US Class Current: 600/594
• CPC Class Codes: A61B 2034/2063 Acoustic tracking systems, e.g. using ultrasound
• CPC Class Codes: A61B 2090/3929 Active markers
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 8/0833 involving detecting or locating foreign bodies or organic structures
• CPC Class Codes: A61B 8/0875 for diagnosis of bone A61B5/4504 takes precedence
• CPC Class Codes: A61B 8/483 involving the acquisition of a 3D volume of data
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

A method and system is disclosed that is operable to generate a location value associated with an implant that has been implanted in a predetermined location of a vertebra of a spine. The location value can be utilized to generate a three-dimensional animation of the spine in motion. The system includes a plurality of implants that include a controller having a memory. The implants also include a telemetry unit connected with the controller that is used to wirelessly transmit and receive data. In addition, the implants include an acoustic generator that is configured to generate an acoustic pulse in response to a signal from the controller. An external control unit is wirelessly connected with the implant for receiving various data values from the implant.

Claims

1-20. -20. (canceled)

21. A system, comprising:

a plurality of implants configured to be placed in a predetermined location on a plurality of respective vertebra of a patient, said implants each comprising;

controllers having memory, wherein each of said controllers comprises a gyroscope sensor connected configured to generate an angular rotation reading associated with each of said implants;

a telemetry unit connected with said controller;

an acoustic generator configured to generate an acoustic pulse in response to a signal from said controller;

an external control unit in communication with said telemetry unit, wherein said external control unit is operable to generate reading signals, said reading signals being sent in sequential order to said controllers, said reading signals being sent to said controllers via said telemetry unit to cause said controllers to generate said signals; and

at least three external receiving patches configured to be attached to an exterior surface of said patient and connected with said external control unit, wherein said external control unit is operable to generate first time stamps associated with said reading signals and a plurality of unique time stamps associated with times at which said at least three external receiving patches detect said acoustic pulses.

22. The system of claim 21, wherein said external control unit is operable to generate a three-dimensional location reading as a function of said first time stamps and said plurality of unique time stamps.

23. The system of claim 21, wherein said first time stamps are associated with times in which said signals are generated.

24. The system of claim 21, wherein at least one of said implants comprises a rechargeable power unit connected with a respective controller, a respective accelerometer, and a respective acoustic generator.

25. The system of claim 24, further comprising an external power patch placed on said patient'"'"'s skin for recharging said rechargeable power unit.

26. The system of claim 25, wherein said power patch is operable to generate electromagnetic energy that is used to charge said rechargeable power unit.

27. The system of claim 26, wherein said power patch is operable to generate acoustic waves that is used to charge said rechargeable power unit.

28. The system of claim 21, wherein said angular rotation readings are transmitted to said control unit using said telemetry unit.

29. The system of claim 21, wherein said angular motion readings correspond to lateral bending and flexion extension of each of said vertebrae.

30. The system of claim 21, further comprising a spinal animation application stored on a storage medium executable by a computing device configured to generate a spinal animation as a function of a plurality of readings taken from said implants.

32. The system of claim 30, wherein said external control unit includes a universal interface port for transmitting data to a computing device.

31. A system, comprising:

a plurality of implants each configured to be implanted on a vertebra of a spine, wherein said implants each include a controller connected with an acoustic generator that is operable to generate an acoustic pulse in response to a signal from said controller, wherein said implants each include a gyroscope connected with a respective controller configured to generate an angular rotation reading associated with a respective vertebra, wherein said implants each include an accelerometer connected with a respective controller configured to generate an angular motion reading associated with a respective vertebra, and a first telemetry unit connected with said respective controller configured to generate an angular motion reading, wherein each of said controllers comprises an accelerometer configured to generate an angular motion reading associated with each of said implants;

an external control unit connected with a second telemetry unit in communication with said first telemetry units of said implants, wherein said external control unit is connected with at least three external receiver patches configured to be placed on a patient'"'"'s skin in a spaced apart relationship in relation to said implants, wherein said external control unit is operable to generate reading signals that are transmitted in sequential order to said controllers and associate a first time value with each of said reading signals; and

wherein in response to said reading signals said controllers are operable to generate said signals to cause said acoustic generators to generate said acoustic pulses, wherein in response to said reading signals said controllers obtain and transmit said angular rotation readings and said angular motion readings to said external control unit, wherein each of said external receiving patches are operable to generate detection signals that are transmitted to said external control unit when said acoustic pulses are detected by said external receiving patches, and wherein said external control unit is operable to assign a detection time value to each detection signal received from each respective external receiving patch.

33. The system of claim 31, further comprising an implant location application stored on a storage medium operable by a computing device to determine a three-dimensional location of said implants as a function of said first time values and said detection time values.

34. The system of claim 31, wherein said reading signals are generated to generate a plurality of result sets that are stored in a database.

35. The system of claim 34, wherein each said result set includes said first time values, said detection time values, said angular rotation readings and said angular motion readings.

36. The system of claim 35, further comprising an animation application stored on a storage medium executable by a computing device configured to generate a spinal animation as a function of said plurality of result sets.

37. The system of claim 31, wherein said angular motion readings are transmitted to said control unit using said telemetry unit.

38. The system of claim 31, wherein at least one of said implants comprises a rechargeable power unit connected with a respective controller, a respective accelerometer, and a respective acoustic generator.

39. The system of claim 38, further comprising an external power patch placed on said patient'"'"'s skin for recharging said rechargeable power unit.

40. A method, comprising:

generating reading requests with an external control unit that is wirelessly transmitted to a plurality of implants, said reading requests being sent in sequential order to each of said implants, each of said implants being oriented in a predetermined location on a vertebra of a spine;

recording a first time value associated with each of said reading requests;

generating an acoustic ping with each of said implants in response to each of said reading requests;

obtaining an angular rotation reading and a angular movement reading in response to each of said reading requests;

wirelessly transmitting said angular rotation readings and said angular movement readings to said external control unit;

monitoring an angular rotation reading associated with each of said implants;

monitoring at least three external receiving patches connected with said external control unit for detection of said acoustic pings;

recording a detection time value from each said external receiving patch when said acoustic pings are detected;

storing said first time values, said angular rotation readings, said angular movement readings, and said detection time values in a database associated with said external control unit;

calculating a location value for each of said implants as a function of said first time value of a respective reading request and said detection time values of a respective ping associated with said respective reading request; and

generating a graphical animation of said implants on said spine as a function of said location values, said angular rotation readings, and said angular movement readings.