Ablation apparatus and system for removal of soft palate tissue

• US 5,743,870 A
• Filed: 05/06/1996
• Issued: 04/28/1998
• Est. Priority Date: 05/09/1994
• Status: Expired due to Term

• Current Assignee: Somnus Medical Technologies, Inc. (Olympus Corporation)
• Original Assignee: Somnus Medical Technologies, Inc. (Olympus Corporation)
• Inventors: Edwards, Stuart D.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US08/643,524
• Time in Patent Office: 722 Days
• Field of Search: 604/22, 604/19-20, 604/164, 604/280, 604/53, 606/39, 606/32, 606/45, 607/96, 607/98, 607/134, 601/2
• US Class Current: 604/22
• CPC Class Codes: A61B 17/24 for use in the oral cavity, larynx, bronchial passages or nose for medical inspection of cavities or tubes in the body A61B1/00; Tongue scrapers
• 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 2017/00026 Conductivity or impedance, e.g. of tissue
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2017/00296 mounted on an endoscope
• CPC Class Codes: A61B 2017/22077 with a part piercing the tissue A61B2017/22044 takes precedence
• CPC Class Codes: A61B 2017/248 Operations for treatment of snoring, e.g. uvulopalatoplasty
• 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 2018/00261 arranged in a line
• 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 2018/00666 : using a threshold value
• CPC Class Codes: A61B 2018/00678 : upper
• CPC Class Codes: A61B 2018/00702 : Power or energy
• CPC Class Codes: A61B 2018/00708 : switching the power on or off
• 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 2018/1425 : Needle
• 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: A61B 90/361 : Image-producing devices, e.g. surgical cameras
• CPC Class Codes: A61M 2025/0096 : being laterally outward extensions or tools, e.g. hooks or fibres
• 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 suitable for the ablation of soft palate tissue, including but not limited to the uvula, includes a cannula with a distal end and a proximal end and a lumen. A vacuum assisted retainer device is coupled to the cannula distal end. The vacuum retainer member includes a uvula receiving member configured to retain at least a portion of the uvula with the application of vacuum. An electromagnetic electrode is coupled to an electromagnetic energy source. A vacuum source is coupled to the uvula receiving member.

Claims

1. An ablation apparatus, comprising:

a handpiece including a distal portion and a proximal portion;

an ablation energy delivery device configured to extend from a distal portion of the handpiece into an interior of a selected oral cavity anatomical structure and further configured to be coupled to an energy source, the ablation energy delivery device including a and

a vacuum assisted retainer device coupled to the handpiece distal portion, wherein the vacuum assisted retainer device is configured to be coupled with a vacuum source, and apply a vacuum force to the exterior surface of the oral cavity anatomical structure.

2. The apparatus of claim 1, wherein the electromagnetic electrode is at least partially positioned in an interior of the uvula receiving member.

3. The apparatus of claim 1, wherein the electromagnetic electrode is coupled to the distal end of the cannula.

4. The apparatus of claim 3, wherein the ablation energy delivery device advancement device is coupled to the handpiece.

5. The apparatus of claim 1, wherein the ablation energy delivery device distal end is configured to be positionable within an interior section of the oral cavity anatomical structure tissue.

6. The apparatus of claim 1, wherein the ablation energy delivery device distal portion is configured to be substantially positionable within a central interior section of the oral cavity anatomical structure.

7. The apparatus of claim 1, wherein an electromagnetic electrode has a geometry configured to surround at least a portion of an exterior of the uvula.

8. The apparatus of claim 1, wherein the electromagnetic electrode includes a thermal sensor.

9. The apparatus of claim 7, wherein at least a portion of the ablation energy delivery device is configured to form at one linear section which extends in a lateral direction relative to the longitudinal axis of the handpiece.

10. The apparatus of claim 1, wherein the uvula receiving member includes a thermal sensor.

11. The apparatus of claim 1, wherein the uvula receiving member includes a thermal sensor positioned on an exterior surface of the uvula receiving member.

12. The apparatus of claim 1, wherein the oral cavity soft anatomical structure is the uvula.

13. The apparatus of claim 12, further comprising:

an insulator in at least a partially surrounding relationship to the RF electrode.

14. The apparatus of claim 1, wherein the uvula receiving member includes a fluid distribution port.

15. The apparatus of claim 1, further comprising:

a visualization apparatus including a distal end extending to the uvula receiving member.

16. The apparatus of claim 15, further comprising:

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

22. The apparatus of claim 1, wherein the energy source is a microwave source providing energy from 915 MHz to 2.45 GHz and the ablation energy delivery device is a microwave antenna.

23. The apparatus of claim 1, wherein the energy source is an ultrasound source and the ablation energy delivery device is an ultrasound emitter.

24. The apparatus of claim 10, wherein the ultrasound source produces energy in the range of 300 KHZ to 3 GHz.

25. The apparatus of claim 1, wherein the energy source is a microwave source.

17. A method of ablating a portion of a uvula, comprising:

providing an ablation apparatus including a cannula, a vacuum assisted retainer device coupled to the cannula distal end, the retainer member including a uvula receiving member configured to retain at least a portion of the uvula with the application of a vacuum, and an electromagnetic electrode;

introducing at least a portion of a uvula in the uvula receiving member;

applying a vacuum to the uvula and retain the uvula in the uvula receiving member

applying electromagnetic energy from the electrode to the uvula in the uvula receiving member; and

forming an ablation lesion within the uvula.

18. The method of claim 17, wherein the electrode is an RF electrode coupled to an RF energy source.

19. The method of claim 18, wherein the RF ablation electrode is a needle electrode.

20. The method of claim 18, wherein the RF ablation apparatus operates in a bipolar mode.

21. The method of claim 18, wherein the RF ablation apparatus operates in a monopolar mode.