Means of Tracking Movement of Bodies During Medical Treatment

• US 20110015521A1
• Filed: 09/24/2010
• Published: 01/20/2011
• Est. Priority Date: 03/27/2003
• Status: Abandoned Application

• Current Assignee: Boulder Innovation Group, Inc. (Stryker Corporation)
• Original Assignee: Boulder Innovation Group, Inc. (Stryker Corporation)
• Inventors: Faul, Ivan
• Application Number:
  US12/889,596
• Publication Number:
  US 20110015521A1
• Time in Patent Office: Days
• US Class Current: 600/426
• CPC Class Codes: A61B 2017/0023 disposable
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00694 with means correcting for movement of or for synchronisation with the body
• CPC Class Codes: A61B 2017/00699 correcting for movement caused by respiration, e.g. by triggering
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 2034/2055 Optical tracking systems
• CPC Class Codes: A61B 2090/0818 Redundant systems, e.g. using two independent measuring systems and comparing the signals
• CPC Class Codes: A61B 2090/306 using optical fibres
• CPC Class Codes: A61B 2090/3945 Active visible markers, e.g. light emitting diodes
• CPC Class Codes: A61B 2090/3975 active
• CPC Class Codes: A61B 2090/3979 infrared
• CPC Class Codes: A61B 2090/3983 Reference marker arrangements for use with image guided surgery
• 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 5/1113 Local tracking of patients, e.g. in a hospital or private home
• CPC Class Codes: A61B 5/1127 using markers
• CPC Class Codes: A61B 6/4494 Means for identifying the diagnostic device
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders
• CPC Class Codes: A61N 2005/1051 using an active marker markers in general A61B90/39
• CPC Class Codes: A61N 2005/1059 using cameras imaging the patient
• CPC Class Codes: A61N 5/1049 : for verifying the position of the patient with respect to the radiation beam
• CPC Class Codes: A61N 5/1067 : in real time, i.e. during treatment
• CPC Class Codes: A61N 5/107 : in real time, i.e. during treatment
• CPC Class Codes: H04B 5/77 : for interrogation

Abstract

Methods and systems enable accurate control of robotic treatments of internal features of a body by tracking movements of the exterior of the body. Such tracking enables programmed and automated or semi-automated surgical operations to compensate for movement of the patient'"'"'s body during surgery. A tracking system that includes a marker, which may be disposable, that is attached to the body and accurately tracked in a three-dimensional coordinate system by a tracking system. Compensation for body movements may be accomplished by adjusting the movement or position of a surgical instrument, a surgical robot, a radiation source collimator and/or the operating room table. The markers may include a radiofrequency identifier (RFID) chip or memory chip that can be interrogated by the tracking system.

Claims

1. A system for improving the accuracy of preprogrammed surgery on a body having an inside portion that is in need of surgery and an outside portion that may move during surgery, comprising:

treatment means for treating the inside portion of a body;

a plurality of markers each adapted to emit a corresponding plurality of signals and to be positioned on the outside portion of the body, each of the plurality of markers comprising;

a signal emitter configured to emit a detectable signal;

a base member coupled to the signal emitter; and

a disposable support element adapted to attach the marker to the body;

a tracking system configured to determine the location of the plurality of markers, the tracking system comprising;

one or more receiver devices configured to receive the signals emitted by the marker signal emitters and generate positioning information based upon the received signals; and

a computer configured to receive the information generated by the receiver devices; and

means for causing the marker signal emitters to emit signals under conditions sufficient to differentiate which emitter is sending each of said signals,

wherein the computer is configured with computer-executable instructions to perform operations comprising;

processing the generated positioning information received from the receiver devices to locate each of the markers within a coordinate system;

tracking movement of the outside portion of the body based on the processed generated positioning information;

identifying and mapping an inside portion of the body that is intended to be subjected to surgery based upon the tracked movement of the outside portion of the body; and

controlling the treatment means to compensate for movement of the body during treatment of the inside portion of the body,

wherein the combination of the emitter and the base member are adapted to dispose the emitter in line of sight with the one or more receiver devices.

2. The system of claim 1, wherein said treatment means comprises a radiation source and collimator configured to apply high energy radiation to the inside portion of the body along a predetermined path sufficient to render said inside portion of the body necrotic.

3. The system of claim 1, wherein said treatment means is adapted to be operated without benefit of a surgeon.

4. The system of claim 1, wherein:

the signal emitter comprises a light emitting diode; and

the one or more receiver devices comprise one or more imagers.

5. The system of claim 1, wherein:

the signal emitter comprises a light emitting diode; and

the one or more receiver devices comprises one or more digital cameras.

6. The system of claim 5, wherein means for causing the marker signal emitters to emit signals under conditions sufficient to differentiate which emitter is sending each of said signals comprises light emitting diodes of different light wavelengths.

7. The system of claim 5, wherein the markers further comprise a memory chip configured to supply a signal encoded with identifier information.

8. The system of claim 7, wherein the memory chip is coupled to a wired data link that is coupled to the computer, and wherein the computer is configured to obtain the identifier information from the encoded signal received from the memory chip via the wired data link.

9. The system of claim 8, further comprise a radiofrequency identifier (RFID) chip configured to emit a radiofrequency signal generated according to a wireless communication protocol selected from the group consisting of RFID, Bluetooth, Near Field Communication (NFC), Zigbee, IEEE 802.15.4, IEEE 802.11x, WiFi, WiMax, and cellular telephone protocols.

10. The system of claim 5, wherein the markers further comprise a radiofrequency identifier (RFID) chip configured to emit a radiofrequency signal encoded with identifier information and generated according to a wireless communication protocol selected from the group consisting of RFID, Bluetooth, Near Field Communication (NFC), Zigbee, IEEE 802.15.4, IEEE 802.11x, WiFi, WiMax, and cellular telephone protocols.

11. The system of claim 5, wherein means for causing the marker signal emitters to emit signals under conditions sufficient to differentiate which emitter is sending each of said signals comprises a power source coupled to each marker and to the computer which is further configured with computer-executable instructions to individually energize each signal emitter.

12. The system of claim 1, wherein:

the signal emitter comprises a memory chip;

means for causing the marker signal emitters to emit signals under conditions sufficient to differentiate which emitter is sending each of said signals comprises a memory chip query signal transceiver configured to query the memory chip and receive encoded signals from the memory chip; and

the tracking system is configured to recognize an identifier encoded in signals emitted by the memory chip emitted signal.

13. The system of claim 12, wherein the memory chip query signal transceiver is configured to query the memory chip and receive encoded signals from the memory chip via a wired data link.

14. The system of claim 12, wherein the memory chip query signal transceiver is configured to query the memory chip and receive encoded signals from the memory chip via a wireless data link.

15. The system of claim 1, wherein:

the signal emitter comprises a radio frequency identifier (RFID) chip; and

means for causing the marker signal emitters to emit signals under conditions sufficient to differentiate which emitter is sending each of said signals comprises an RFID query signal transmitter and the tracking system configured to recognize an identifier encoded in each RFID emitted signal.

16. The system of claim 1, wherein the signal emitter comprises a plurality of light emitting diodes (LEDs) disposed in a housing remote from the body, the housing coupled to at least one fiber optic cable having an end that is operatively associated with each of the LEDs within the housing and having another end that is adapted to be substantially fixedly disposed on the outside portion of the body.

17. The system of claim 16, wherein the housing further comprise a radiofrequency identifier (RFID) chip configured to emit a radiofrequency signal encoded with identifier information and generated according to a wireless communication protocol selected from the group consisting of RFID, Bluetooth, Near Field Communication (NFC), Zigbee, IEEE 802.15.4, IEEE 802.11x, WiFi, WiMax, and cellular telephone protocols.

18. The system of claim 16, wherein the housing further comprise a memory chip configured to transmit a signal encoded with identifier information to the tracking system via a wired data link.

19. The system of claim 18, wherein the memory chip is coupled to the tracking system via a wired data link and the memory chip is configured to transmit the signal encoded with identification information via the wired data link.

20. The system of claim 18, wherein the memory chip is coupled to a wireless transceiver configured to transmit the signal encoded with identifier information to the tracking system via a wireless data link using a wireless communication protocol selected from the group consisting of RFID, Bluetooth, Near Field Communication (NFC), Zigbee, IEEE 802.15.4, IEEE 802.11x, WiFi, WiMax, and cellular telephone protocols.

21. The system of claim 1, wherein said treatment means comprises an emitter of high energy ultra sound radiation.

22. The system of claim 1, further comprising an operating table comprising positioning mechanisms configured to move the operating table in response to movement commands received from the computer,

wherein the computer is configured with computer-executable instructions to perform operations comprising issuing movement commands to the operating table positioning mechanisms to compensate for movement of the body during treatment.

23. The system of claim 1, wherein:

the treatment means comprises;

a high energy radiation source; and

a collimator comprising radiation blocking elements configured to collimate high energy radiation emitted from the radiation source so as to apply radiation to an inside portion of the body; and

the computer is configured with computer-executable instructions to perform operations such that controlling the treatment means to compensate for movement of the body during treatment of the inside portion of the body comprises issuing movement commands to the collimator controllable radiation blocking elements to re-direct radiation exiting the collimator so as to compensate for movement of the body during treatment.

24. The system of claim 1, wherein:

the treatment means comprises;

a high energy radiation source; and

a collimator comprising controllable radiation focusing elements configured to focus radiation from the high energy radiation source into a beam suitable for radiating the inside portion of the body; and

the computer is configured with computer-executable instructions to perform operations such that controlling the treatment means to compensate for movement of the body during treatment of the inside portion of the body comprises issuing movement commands to the collimator controllable focusing elements to steer the radiation beam so as to compensate for movement of the body during treatment.

25. A method of treating an inside portion of a body that is in need of surgery that may move during surgery, comprising:

placing a plurality of markers on an outside portion of the body, each of the plurality of markers configured to emit a detectable signal so that it may be received by a plurality of receiver devices under conditions sufficient to differentiate which marker is sending each detectable signal;

receiving the emitted detectable signal from the plurality of markers;

determining a location of each of the plurality of markers based upon the received emitted detectable signals;

determining a location of the inside portion of the body based upon the determined locations of the plurality of markers; and

controlling a radiation treatment applied to the inside portion of the body to compensate for movement of the body during treatment by accomplishing one of adjusting a position of an operating table supporting the body, adjusting a collimator in a radiation source, and adjusting both a position of an operating table supporting the body and a collimator in a radiation source.

26. The method of claim 25, further comprising:

transmitting a radiofrequency identifier (RFID);

receiving an RFID response signal encoding identification information; and

identifying one of the plurality of markers based on the encoded identification information within the received RFID response signal.

27. The method of claim 25, further comprising:

querying a memory chip on one of the plurality of markers;

receiving an response signal from the memory chip encoding identification information; and

identifying one of the plurality of markers based on the encoded identification information within the response signal received from the memory chip.