Ablation apparatus and system for removal of soft palate tissue

• US 5,674,191 A
• Filed: 08/18/1995
• Issued: 10/07/1997
• Est. Priority Date: 05/09/1994
• Status: Expired due to Fees

• Current Assignee: Somnus Medical Technologies, Inc. (Olympus Corporation)
• Original Assignee: Somnus Medical Technologies, Inc. (Olympus Corporation)
• Inventors: Edwards, Stuart D., Gough, Edward J., Douglass, David
• Primary Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US08/516,781
• Time in Patent Office: 781 Days
• Field of Search: 604/22, 606/1, 606/13-16, 606/27-29, 606/32-40, 606/41-45, 606/46-52
• US Class Current: 604/22
• CPC Class Codes: A61B 18/1402 Probes for open surgery
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 18/1477 Needle-like probes
• CPC Class Codes: A61B 18/1485 having a short rigid shaft for accessing the inner body through natural openings
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 18/1815 using microwaves
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 18/22 the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2017/00296 mounted on an endoscope
• CPC Class Codes: A61B 2017/306 holding by means of suction
• CPC Class Codes: A61B 2018/00011 with fluids
• CPC Class Codes: A61B 2018/00023 closed, i.e. without wound contact by the fluid
• CPC Class Codes: A61B 2018/00101 low, i.e. thermally insulating
• CPC Class Codes: A61B 2018/00291 using suction
• CPC Class Codes: A61B 2018/00327 Ear, nose or throat
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/00636 Sensing and controlling the application of energy
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00744 Fluid flow
• CPC Class Codes: A61B 2018/00773 : Sensed parameters
• CPC Class Codes: A61B 2018/00791 : Temperature
• CPC Class Codes: A61B 2018/00797 : measured by multiple temperature sensors
• CPC Class Codes: A61B 2018/00827 : Current
• CPC Class Codes: A61B 2018/00875 : Resistance or impedance
• CPC Class Codes: A61B 2018/00892 : Voltage
• CPC Class Codes: A61B 2018/00982 : combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
• CPC Class Codes: A61B 2090/3782 : transmitter or receiver in catheter or minimal invasive instrument
• CPC Class Codes: A61B 2218/002 : Irrigation
• CPC Class Codes: A61B 2218/003 : using a spray or a foam
• CPC Class Codes: A61B 5/24 : Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
• CPC Class Codes: A61N 1/06 : for high-frequency therapy
• CPC Class Codes: A61N 1/403 : for thermotherapy, e.g. hyperthermia
• CPC Class Codes: A61N 5/04 : Radiators for near-field treatment
• CPC Class Codes: A61N 5/045 : specially adapted for treatment inside the body

Abstract

An ablation apparatus includes a cannula with a distal end, a proximal end and a lumen. An anvil is coupled to the cannula and extends beyond the cannula distal end. The anvil has a distal end that extends in a lateral direction relative to an anvil longitudinal axis. The distal end is adapted to receive and position an uvula or other soft tissue. One or more energy delivery devices are slideably positioned in the cannula. The energy delivery devices are advanced and retracted in and out the cannula distal end. An advancement and retraction apparatus advances and retracts the energy delivery devices in and out of the cannula distal end and into the soft tissue retained at the anvil distal end. The soft tissue ablation apparatus can further include a handle with a lumen, a proximal end and a distal end. The cannula is at least partially positioned in the handle lumen and extends beyond the handle distal end. The ablation apparatus is useful for ablation of soft palate tissue to eliminate snoring.

Claims

1. An ablation apparatus, comprising:

a cannula including a distal end, a proximal end and an interior lumen;

an energy delivery device at least partially positionable in the cannula and configured to be of being advanced and retracted in and out the cannula distal end, wherein the energy delivery device includes a distal end sufficiently sharp to pierce an oral cavity structure;

a retainer member coupled to the cannula and extending in a distal direction from the cannula distal end, the retainer member configured to restrict a movement of the oral cavity structure when the energy delivery device is introduced into an interior of the oral cavity structure; and

a deployment and retraction apparatus coupled to the cannula and configured to advance and retract the distal end of the energy delivery device in and out of the the oral cavity structure.

2. The apparatus of claim 1, wherein the retainer member is an anvil.

3. The apparatus of claim 1, wherein the retainer member has a distal end net geometry.

4. The apparatus of claim 1, wherein the retainer member has a grasper distal end.

5. The apparatus of claim 1, wherein the retainer member has a hook distal end.

6. The apparatus of claim 1, wherein the energy delivery device is an RF electrode.

7. The apparatus of claim 1, wherein the energy delivery device is laser optical fiber.

8. The apparatus of claim 6, further comprising:

an insulator in a surrounding relationship to the RF electrode, the insulator and the RF electrode being slidably engaged to vary a length of RF electrode not covered by the insulator to define an RF electrode ablation surface.

9. The apparatus of claim 1, further comprising:

one or more sensors positioned at a distal end of one of the cannula or the retaining member.

10. The apparatus of claim 1, wherein the retaining member includes a hollow lumen.

11. The apparatus of claim 1, wherein the retaining member distal end includes one or more fluid distribution ports.

12. The apparatus of claim 1, further comprising:

a visualization apparatus with a distal end, the visualization apparatus positioned is a lumen formed in the cannula.

13. The apparatus of claim 12, wherein the visualization apparatus distal end is positioned at the cannula distal end.

14. The apparatus of claim 12, further comprising:

an eyepiece coupled to the visualization apparatus and positioned at the proximal end of the cannula.

15. The apparatus of claim 12, further comprising:

a flushing port formed in the retaining member to deliver a flushing medium directed past the visualization apparatus distal end.

16. The apparatus of claim 1, wherein the retaining member is formed as an integral part of the cannula.

17. The apparatus of claim 1, wherein the retaining member is an element that is not an integral part of the cannula.

18. The apparatus of claim 1, wherein a length of the retaining member is adjustable.

19. The apparatus of claim 1, wherein the retaining member distal end is a ground pad electrode.

20. The apparatus of claim 1, wherein the retaining member is slideably mounted to the cannula.

21. The apparatus of claim 1, further comprising:

a flushing channel formed in the cannula lumen, the flushing channel including a distal end positioned adjacent to the lumen housing the visualization apparatus.

22. The apparatus of claim 1, wherein the retaining member distal end is rotatable.

23. The apparatus of claim 1, wherein the retaining member is retractable in a direction towards the cannula proximal end.

24. The apparatus of claim 1, wherein the retaining member is a hollow lumen coupled to a vacuum source.

25. The apparatus of claim 1, further comprising:

a visualization apparatus coupled to the cannula.

26. The apparatus of claim 25, wherein the visualization apparatus is at least partially positioned in an interior of the cannula.

27. The apparatus of claim 25, further comprising:

an eyepiece coupled to a proximal end of the visualization apparatus.

28. The apparatus of claim 1, further comprising:

a visualization apparatus coupled to the cannula.

29. The apparatus of claim 28, wherein the visualization apparatus is at least partially positioned in an interior of the cannula.

30. The apparatus of claim 28, further comprising:

an eyepiece coupled to a proximal end of the visualization apparatus.

31. A uvula ablation apparatus, comprising:

a cannula including a distal end, a proximal end and an interior lumen;

an energy delivery device at least partially positionable in the lumen and configured to be coupled to an energy source, the energy delivery device including a distal end configured to extend beyond the distal end of the cannula, wherein the energy delivery device includes a distal end sufficiently sharp to pierce the uvula;

a retainer member coupled to the cannula and extending in a distal direction from the cannula distal end, the retainer member configured to restrict a movement of the uvula when the energy delivery device is introduced into an interior of the uvula; and

a cable coupled to the energy delivery device.

32. The apparatus of claim 31, further comprising:

a deployment and retraction apparatus at least partially positioned in the cannula to advance and retract the distal end of the energy delivery device in and out of the uvula.

33. The apparatus of claim 31, wherein the retainer member is an anvil.

34. The apparatus of claim 31, wherein the retainer member has a distal end with a net geometry.

35. The apparatus of claim 31, wherein the retainer member has a grasper distal end.

36. The apparatus of claim 31, wherein the retainer member has a hook distal end.

37. The apparatus of claim 31, wherein the energy delivery device is an RF electrode.

38. The apparatus of claim 37, further comprising:

an insulator in a surrounding relationship to the RF electrode, the insulator and the RF electrode being slidably engaged to vary a length of RF electrode not covered by the insulator to define an RF electrode ablation surface.

39. The apparatus of claim 31, wherein the energy delivery device is laser optical fiber.

40. The apparatus of claim 31, further comprising:

one or more sensors positioned at a distal end of one of the cannula or the retaining member.

41. The apparatus of claim 40, further comprising:

resources connected with the sensors, the retaining member and the energy source, the resources providing an output for delivering and maintaining a selected energy at the energy delivery device.

42. The apparatus of claim 41, wherein the resources provides an output that maintains a selected energy at the energy delivery device for a selected length of time.

43. The apparatus of claim 31, wherein the retaining member includes a hollow lumen.

44. The apparatus of claim 31, wherein the retaining member distal end includes one or more fluid distribution ports.

45. The apparatus of claim 31, further comprising:

a visualization apparatus with a distal end, the visualization apparatus positioned in a lumen formed in the cannula.

46. The apparatus of claim 45, wherein the visualization apparatus distal end is positioned at the cannula distal end.

47. The apparatus of claim 31, wherein a length of the retaining member is adjustable.

48. The apparatus of claim 31, wherein the retaining member distal end is rotatable.

49. The apparatus of claim 31, wherein the retaining member is retractable in a direction towards the cannula proximal end.

50. The apparatus of claim 31, wherein the retaining member includes a hollow lumen coupled to a vacuum source.