Apparatus and methods for automated sequential movement control for operation of a remote navigation system

• US 20070043455A1
• Filed: 07/14/2006
• Published: 02/22/2007
• Est. Priority Date: 07/26/2005
• Status: Abandoned Application

• Current Assignee: Stereotaxis, Inc.
• Original Assignee: Stereotaxis, Inc.
• Inventors: Viswanathan, Raju R., Blume, Walter M., Kastelein, Nathan, Garibaldi, Jeffrey M.
• Application Number:
  US11/486,990
• Publication Number:
  US 20070043455A1
• Time in Patent Office: Days
• US Class Current: 700/66
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 2090/061 for measuring dimensions, e.g. length
• 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 34/70 Manipulators specially adapted for use in surgery
• CPC Class Codes: A61B 90/36 Image-producing devices or illumination devices not otherwise provided for

Abstract

A method of defining automated movement sequences of a remotely controlled medical device actuated by a remote navigation system includes the steps of: defining a reference length for a medical device inserted into an anatomical chamber where subsequent device length measurements are made and automated device length changes are applied with respect to the reference length, and defining a movement sequence as a concatenation of automated movement building block primitives for subsequent automated execution by the remote navigation system.

Claims

1. A method of defining automated movement sequences of a remotely controlled medical device actuated by a remote navigation system, the method comprising the steps of:

(a) defining a reference length for a medical device inserted into an anatomical chamber where subsequent device length measurements are made and automated device length changes are applied with respect to the reference length, and (b) defining a movement sequence as a concatenation of automated movement building block primitives for subsequent automated execution by the remote navigation system.

2. The method of claim 1, where the concatenation of movement primitives is specified by a user.

3. The method of claim 1, where the concatenation of movement primitives is pre-defined on the remote navigation system.

4. The method of claim 1, where at least one movement parameter associated with at least one of the movement primitives is specified by the user.

5. The method of claim 4, where at least one of the user-specified movement parameters is a device advancement length.

6. The method of claim 4, where at least one of the user-specified movement parameters is a device retraction length.

12. The method of claim 1, where device length in at least one of the movement primitives is defined in an absolute sense with respect to the reference length.

13. The method of claim 1, where device length change in at least one of the movement primitives is defined in a relative sense with respect to the currently measured device length.

7. (canceled)

8. (canceled)

9. (canceled)

10. (canceled)

11. (canceled)

14. (canceled)

15. (canceled)

16. (canceled)

17. (canceled)

18. (canceled)

19. An automated method of operating a remote navigation system comprising an orientation system for orienting the distal end of a medical device and a positioning system for advancing and retracting the medical device, the method comprising:

operating the positioning system to automatically advance the medical device in response to a user command until the device makes contact with an anatomical surface, and discontinuing advancement of the device upon detecting device contact with an anatomical surface.

20. The method of claim 19, where the medical device tip orientation is tracked by a localization system.

21. The method of claim 20, where contact with an anatomical surface is determined by the remote navigation system by continuously monitoring for a sharp change in device tip orientation indicating the device tip is in contact with an anatomical surface.

22. The method of claim 21, where the sharp change in device orientation is defined by a pre-defined threshold value of orientation change within a pre-defined time interval.

23. The method of claim 21, where the sharp change in device orientation is defined as a threshold value for a first function of the angle between the device tip orientation and a second function of a control variable.

24. The method of claim 23, where the control variable is an externally applied magnetic field.

25-61. -61. (canceled)

62. A control for operating a remote navigation system comprising an orientation system for orienting the distal end of a medical device and a positioning system for advancing and retracting the medical device, the control acting in response to a user command to operate the positioning system to retract the medical device while the distal tip of the device remains at an orientation indicative of contact with an anatomical surface, and discontinuing retraction of the device upon detecting device contact with an anatomical surface.

63. The control of claim 62 wherein the control operates the positioning system to retract the medical device until a predetermined change in orientation of the distal tip of the medical device.

64. The control of claim 62 wherein the control operates the positioning system to retract the medical device until a predetermined change in orientation of the distal tip of the medical device or a predetermined length of retraction.

65. The control of claim 62 wherein the control operates the positioning system to retract the medical device until the distal tip comes within a predetermined amount of an angular orientation indicating contact with an anatomical surface.

66. The control of claim 62 wherein the control operates the positioning system to retract the medical device until the distal tip comes within a predetermined amount of an angular orientation indicating contact with an anatomical surface or a predetermined length of retraction.

75. The control of claim 62 further including a graphical user interface comprising an element displayed on a display, which when activated causes the positioning system to operate to advance the medical device until a change in the distal end of the medical device indicates the distal end is in contact with an anatomical structure.

67-74. -74. (canceled)

76-80. -80. (canceled)