INDUCTIVELY HEATED MULTI-MODE ULTRASONIC SURGICAL TOOL

• US 20100268216A1
• Filed: 12/24/2009
• Published: 10/21/2010
• Est. Priority Date: 04/17/2009
• Status: Active Grant

• Current Assignee: Domain Surgical, Inc (OmniGuide Holdings, Inc.)
• Original Assignee: Domain Surgical, Inc (OmniGuide Holdings, Inc.)
• Inventors: Manwaring, Kim, McNally, David
• Granted Patent: US 8,523,851 B2
• Time in Patent Office: Days
• US Class Current: 606/31
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/320068 using mechanical vibrations, e.g. ultrasonic A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745
• CPC Class Codes: A61B 17/3211 Surgical scalpels, knives; Accessories therefor
• CPC Class Codes: A61B 18/04 by heating by applying electromagnetic radiation A61B18/18; hyperthermia using electric or magnetic fields, radiation or ultrasound A61N
• CPC Class Codes: A61B 18/08 by means of electrically-heated probes
• CPC Class Codes: A61B 18/082 Probes or electrodes therefor
• CPC Class Codes: A61B 18/085 Forceps, scissors
• CPC Class Codes: A61B 18/10 Power sources therefor
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2017/00141 continuous, e.g. wave
• CPC Class Codes: A61B 2017/00876 magnetic
• CPC Class Codes: A61B 2017/00973 pedal-operated
• CPC Class Codes: A61B 2017/320069 for ablating tissue
• CPC Class Codes: A61B 2017/32007 with suction or vacuum means
• CPC Class Codes: A61B 2017/320082 for incising tissue
• CPC Class Codes: A61B 2018/00077 high, i.e. electrically conducting
• CPC Class Codes: A61B 2018/00095 high, i.e. heat conducting
• CPC Class Codes: A61B 2018/00107 Coatings on the energy applicator
• CPC Class Codes: A61B 2018/0013 non-sticking
• CPC Class Codes: A61B 2018/00577 : Ablation
• CPC Class Codes: A61B 2018/00589 : Coagulation
• CPC Class Codes: A61B 2018/00595 : Cauterization
• CPC Class Codes: A61B 2018/00601 : Cutting
• CPC Class Codes: A61B 2018/00619 : Welding
• CPC Class Codes: A61B 2018/00642 : with feedback, i.e. closed loop control
• CPC Class Codes: A61B 2018/00654 : with individual control of each of a plurality of energy emitting elements
• CPC Class Codes: A61B 2018/00702 : Power or energy
• CPC Class Codes: A61B 2018/00714 : Temperature
• CPC Class Codes: A61B 2018/00755 : Resistance or impedance
• CPC Class Codes: A61B 2018/00791 : Temperature
• CPC Class Codes: A61B 2018/00803 : with temperature prediction
• CPC Class Codes: A61B 2018/00958 : for switching between different working modes of the main function
• CPC Class Codes: A61B 2018/128 : generating two or more frequencies
• CPC Class Codes: A61B 2018/1407 : Loop
• CPC Class Codes: A61B 2018/1412 : Blade
• CPC Class Codes: A61M 25/00 : Catheters; Hollow probes dilators A61M29/00; peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00 ; for measuring or testing A61B; materials for catheters A61L29/00
• CPC Class Codes: A61M 25/0082 : Catheter tip comprising a tool
• CPC Class Codes: Y10T 29/49124 : On flat or curved insulated base, e.g., printed circuit, etc.

Abstract

Thermal, electrosurgical and mechanical modalities may be combined in a surgical tool. Potentially damaging effects in a first modality may be minimized by using a secondary modality. In one example, thermal hemostasis may thus help electrosurgical applications avoid the adverse tissue effects associated with hemostatic monopolar electrosurgical waveforms while retaining the benefits of using monopolar incising waveforms.

Claims

1. A multi-mode adjustable surgical tool comprising:

a body configured to oscillate;

a conductor placed around at least a portion of the body a ferromagnetic coating covering a portion of the conductor; and

a power source delivering an oscillating current to the conductor.

2. The multi-mode surgical tool of claim 1, wherein the body comprises an ultrasonic horn.

3. The multi-mode surgical tool of claim 1, further comprising a power source for providing oscillating electrical energy to thereby oscillate the body and provide heating of the ferromagnetic coating.

4. The multi-mode surgical tool of claim 3, wherein the power source further comprises independent sources for providing energy to oscillate the body and for providing heating of the ferromagnetic coating.

5. The multi-mode surgical tool of claim 4, wherein the independent sources are configured to operate during overlapping periods of time.

6. The multi-mode surgical tool of claim 4, wherein the independent sources are configured to operate during separate periods of time.

7. The multi-mode surgical tool of claim 1, wherein the body has a bore.

8. The multi-mode surgical tool of claim 7, wherein the body has a plurality of bores.

9. The multi-mode surgical tool of claim 8, wherein a first bore of the plurality of bores is configured to aspirate and a second bore of the plurality of bores is configured to irrigate.

10. The multi-mode surgical tool of claim 1, wherein the power source further comprises power settings corresponding to desired tissue effects.

11. A multi-mode surgical tool comprising an ultrasonic transducer and a thermal element.

12. The multi-mode surgical tool of claim 11, wherein the thermal element is a ferromagnetic coated conductor.

13. The multi-mode surgical tool of claim 12, wherein the ultrasonic transducer further comprises a piezoelectric transducer.

14. The multi-mode surgical tool of claim 11, further comprising a power source for generating a multiplexed signal.

15. The multi-mode surgical tool of claim 14, wherein the multiplexed signal comprises an ultrasonic signal.

16. The multi-mode surgical tool of claim 15, wherein the multiplexed signal comprises an inductive heating signal.

17. The multi-mode surgical tool of claim 16, wherein the inductive heating signal is between 5 MHz and 24 GHz.

18. The multi-mode surgical tool of claim 17, wherein the inductive heating signal is between 40 MHz and 928 MHz.

19. A multi-mode surgical tool comprising:

a tip comprising;

an electrical conductor;

an ultrasonic transducer; and

a ferromagnetic coating covering at least a portion of the electrical conductor.

20. The multi-mode surgical tool of claim 19, further comprising means for generating a multiplexed signal.

21. The multi-mode surgical tool of claim 19, wherein the tip is part of an oscillating body.

22. The multi-mode surgical tool of claim 19, wherein the body comprises an aspirating bore.

23. The multi-mode surgical tool of claim 21, wherein the oscillating body further comprises an ultrasonic horn.

24. A multi-mode surgical tool comprising:

a lesioning probe having;

a tip comprising and electrical conductor;

a ferromagnetic coating covering a portion of the conductor; and

an ultrasonic transducer.

25. The multi-mode surgical tool of claim 24, further comprising a power source delivering an oscillating current to the tip.

26. The multi-mode surgical tool of claim 25, further comprising a second tip, wherein the second tip comprises a sensor.

27. The multi-mode surgical tool of claim 26, wherein the power source is configured to react to the sensor.

28. The multi-mode surgical tool of claim 26, wherein the sensor is configured to measure temperature.

29. The multi-mode surgical tool of claim 26, wherein the sensor is configured to measure transferred heat.

30. The multi-mode surgical tool of claim 26, wherein the sensor is configured to measure tissue properties.

31. The multi-mode surgical tool of claim 26, wherein the sensor is configured to allow visual observation of tissue.

32. The multi-mode surgical tool of claim 25, wherein the power supply is configured to measure a temperature indicator of the ferromagnetic coating and adjust an output to maintain predetermined therapeutic temperature range in tissue.

33. The multi-mode surgical tool of claim 24, where the tip and conductor of the tool are coated with a thin layer of high temperature resistant, non-stick material.

34. The multi-mode surgical tool of claim 24, where the tip of the tool is covered by a highly thermally conductive, biocompatible material.

35. A multi-mode surgical catheter comprising:

a catheter comprising;

a surgical tip;

a thermal element disposed on the surgical tip; and

an ultrasonic transducer configured to provide ultrasonic energy to the surgical tip.

36. The multi-mode catheter of claim 35, wherein the catheter further comprises at least one lumen.

37. The multi-mode catheter of claim 36, further comprises means for developing suction within the lumen.

38. The multi-mode catheter of claim 36, further comprising a substance disposed in the lumen for delivery into a patient.

39. The multi-mode catheter of claim 36, further comprising at least one sensor for sensing tissue condition.

40. The multi-mode catheter of claim 36, further comprising means for providing visual feedback.

41. A thermally adjustable multi-mode surgical tool comprising:

a cable;

a small diameter electrical conductor having a proximal and distal end, wherein the proximal end is configured to receive radiofrequency energy from the cable;

a thin plating of ferromagnetic material disposed circumferentially about the electrical conductor, wherein the ferromagnetic material is configured with a Curie point sufficiently high to encompass a desired set of therapeutic temperature ranges; and

an ultrasonic element connected configured to receive power from the cable and configured to release ultrasonic energy into nearby tissue.