METHODS AND DEVICES FOR DIAGNOSING, MONITORING, OR TREATING MEDICAL CONDITIONS THROUGH AN OPENING THROUGH AN AIRWAY WALL

• US 20120289815A1
• Filed: 05/13/2011
• Published: 11/15/2012
• Est. Priority Date: 05/13/2011
• Status: Abandoned Application

• Current Assignee: Broncus Medical Incorporated
• Original Assignee: Broncus Technologies, Inc
• Inventors: KEAST, Thomas M., LAUFER, Michael D., COLE, Cary, ROSCHAK, Edmund J., WIBOWO, Henky J., KAPLAN, Gary S.
• Application Number:
  US13/107,759
• Publication Number:
  US 20120289815A1
• Time in Patent Office: Days
• US Class Current: 600/411
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/00809 Lung operations
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22042 Details of the tip of the guide wire
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 2034/2055 Optical tracking systems
• CPC Class Codes: A61B 2034/2057 Details of tracking cameras
• CPC Class Codes: A61B 2090/061 for measuring dimensions, e.g. length
• CPC Class Codes: A61B 2090/3782 transmitter or receiver in catheter or minimal invasive instrument
• CPC Class Codes: A61B 2090/3945 Active visible markers, e.g. light emitting diodes
• CPC Class Codes: A61B 5/062 using magnetic field

Abstract

Methods and devices for diagnosing, monitoring, and/or treating tissue through an opening or port through an airway wall are provided herein.

Claims

1. A method of navigating an elongate instrument through an opening in an airway wall to target tissue in the lung comprising:

advancing an elongate instrument within an airway of the lung;

advancing the elongate instrument through an opening in the airway wall; and

providing an electromagnetic sensor to guide or track the elongate instrument.

2. The method of claim 1, further comprising applying an electromagnetic field in a vicinity of the electromagnetic sensor to guide or track the elongate instrument.

3. The method of claim 2, wherein the electromagnetic field is registered to a 3D model of the lung which has been reconstructed from a set of radiographic images.

4. The method of claim 3 wherein the set of radiographic images are from a CT scan.

5. The method of claim 1, wherein the electromagnetic sensor is positioned at a distal end of the elongate instrument.

6. A method of accessing target tissue in a lung, the method comprising:

locating a target site on an airway wall, wherein the target site is in a location that allows for creation of an opening leading to the target tissue and for advancement of an elongate instrument through the opening to the target tissue; and

providing an electromagnetic sensor to guide or track the elongate instrument.

7. The method of claim 6, further comprising applying an electromagnetic field in a vicinity of the electromagnetic sensor to guide or track the elongate instrument.

8. The method of claim 7, wherein the electromagnetic field is registered to a 3D model of the lung which has been reconstructed from a set of radiographic images.

9. The method of claim 8 wherein the set of radiographic images are from a CT scan.

10. The method of claim 6, wherein the electromagnetic sensor is positioned at a distal end of the elongate instrument.

11. The method of claim 6, wherein the target site is in a location that allows for advancement of an elongate instrument to the target tissue along a substantially straight path.

12. The method of claim 6, wherein the target site is in a location that allows for advancement of an elongate instrument from the opening in the airway wall to the target tissue along a substantially straight path.

13. The method of claim 6, wherein the target site is determined by considering one or more of the following factors:

a size of the airway;

an outer diameter of a scope used to advance the elongate instrument in the airway;

space available within the airway to articulate a scope so that the scope working channel can point towards the target tissue;

a position of blood vessels in the lung;

a location of pleural surfaces within the lung;

a location of other airways in the lung; and

/or a location, size, and/or shape of a target tissue.

14. The method of claim 6, wherein the target site is in a location that allows for the creation of a substantially straight tunnel or channel leading from the target site or opening to the target tissue.

15. The method of claim 6, wherein locating a target site on the airway wall comprises determining a direction or orientation of a tunnel or channel in space, the tunnel or channel leading from the airway wall to the target tissue in a substantially straight line.

16. The method of claim 6, further comprising creating an opening through the airway wall at the target site by advancing a piercing member to the target site and through the airway wall.

17. The method of claim 16, further comprising dilating the opening with a balloon catheter or other expandable device.

18. The method of claim 6, further comprising advancing an elongate instrument through the opening to the target tissue.

19. The method of claim 18, further comprising articulating the elongate instrument within the airway such that a distal end of the elongate instrument points in a direction facing the target tissue before the elongate instrument advances through the opening.

20. The method of claim 18, further comprising:

advancing a dissecting catheter having a sharp or rounded tip positioned within the elongate instrument through the opening and to the target tissue;

leaving the elongate instrument in place to provide access to the target tissue for performing monitoring, diagnostic or therapeutic procedures or for delivering instruments or tools to the target tissue.

21. The method of claim 18 further comprising guiding the elongate instrument or a dissecting catheter with the electromagnetic sensor or an electromagnetic field.

22. The method of claim 6, wherein the target tissue is a tumor or diseased tissue.

23. A method of accessing target tissue in a lung, the method comprising:

advancing an elongate instrument to a target site in an airway of the lung;

creating an opening through the airway wall at the target site, the opening leading to the target tissue;

advancing the elongate instrument through the opening to the target tissue; and

guiding the elongate instrument with an electromagnetic sensor or an electromagnetic field.

24. The method of claim 23, wherein the elongate instrument is advanced to the target tissue along a substantially straight path.

25. The method of claim 23, wherein the elongate instrument is advanced from the opening in the airway wall to the target tissue along a substantially straight path.

26. The method of claim 23, further comprising locating a target site on an airway wall, wherein the target site is in a location that allows for creation of an opening leading to the target tissue and for advancement of the elongate instrument through the opening to the target tissue.

27. The method of claim 26, wherein the elongate instrument is advanced to the target tissue along a substantially straight path.

28. The method of claim 23, further comprising dilating the opening with a balloon catheter or other expandable device.

29. The method of claim 23, further comprising articulating the elongate instrument within the airway such that a distal end of the elongate instrument points in a direction facing the target tissue before the elongate instrument advances through the opening.

30. The method of claim 23, further comprising leaving the elongate instrument in place to provide access to the target tissue for performing monitoring, diagnostic or therapeutic procedures or for delivering instruments or tools to the target tissue.

31. The method of claim 23, further comprising performing additional imaging to guide the elongate instrument to the target tissue wherein the imaging method used is comprised of at least one of:

fluoroscopy, computed tomography, positron emission technology, magnetic resonance imaging, or ultrasound.

32. A method of accessing target tissue in a lung, the method comprising:

selecting a target site in an airway of the lung wherein the target site is in a location that allows for creation of an opening through the airway wall, the opening leading to the target tissue, and wherein the target site is in a location that allows for advancement of an elongate instrument through the opening to the target tissue along a substantially straight path;

advancing an elongate instrument to a target site in an airway of the lung;

creating an opening through the airway wall at the target site, the opening leading to the target tissue;

advancing the elongate instrument and a blunt tipped dissecting catheter positioned within the elongate instrument through the opening and to the target tissue;

guiding the elongate instrument and dissecting catheter with an electromagnetic sensor or an electromagnetic field; and

leaving the elongate instrument in place to provide access to the target tissue for performing monitoring, diagnostic or therapeutic procedures.

33. A system for accessing target tissue in a lung comprising:

a piercing member configured to create an opening through an airway wall at a target site on the airway wall, the opening leading to the target tissue;

a dissecting catheter configured for advancement through the opening and for creating a channel through the lung to the target tissue; and

an elongate instrument configured for advancement through the opening and the channel to the target tissue, wherein the elongate instrument is configured to provide access to the target tissue for performing monitoring, diagnostic or therapeutic procedures; and

a guiding system for guiding the elongate instrument and dissecting catheter with an electromagnetic sensor or an electromagnetic field.