Method of treatment with multi-mode surgical tool

• US 8,414,569 B2
• Filed: 12/24/2009
• Issued: 04/09/2013
• 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
• Primary Examiner(s): Dvorak, Linda
• Assistant Examiner(s): DELLA, JAYMI E
• Application Number:
  US12/647,380
• Publication Number:
  US 20100268206A1
• Time in Patent Office: 1,202 Days
• Field of Search: 606/47, 606/31, 606/27, 606169-171, 607/103, 607/113, 607/96
• 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 process of delivering power to a thermally adjustable multi-mode surgical instrument comprising:

selecting a surgical instrument having a tip;

delivering a first oscillating signal to a conductor disposed on the surgical instrument, the conductor having a ferromagnetic coating covering a portion thereof, wherein the ferromagnetic coating is sufficiently thin that the ferromagnetic coating will not fracture when heated and then immersed in liquid, the conductor extending through the entire ferromagnetic coating, and wherein delivering the first oscillating signal to the conductor causes direct heating of the ferromagnetic coating to a temperature sufficient to treat tissue; and

delivering a second oscillating signal to the surgical instrument to cause ultrasonic vibrations in the tip.

2. The process of claim 1, wherein delivering the first oscillating electrical signal to the conductor causes direct heating of the ferromagnetic coating to a temperature sufficient to cause hemostasis in tissue.

3. The process of claim 1, wherein delivering the second oscillating electrical signal to the surgical instrument cause the tip to incise tissue.

4. The process of claim 1, wherein the first oscillating signal and the second oscillating signal are multiplexed.

5. The process of claim 1, wherein delivering the first oscillating electrical signal to the conductor causes heating of the ferromagnetic coating to a temperature sufficient to self-clean the ferromagnetic coating.

6. A method of treating tissue, the method comprising;

selecting a surgical instrument having a body, and a conductor with a ferromagnetic coating disposed on a portion thereof, and a transducer which drives the body, wherein the ferromagnetic coating is sufficiently thin to not fracture when heated and exposed to a temperature differential sufficiently large to cause a ferrite bead to fracture;

disposing the body and ferromagnetic coating adjacent a tissue in a surgical site;

delivering an electrical signal to the transducer to incise or break up the tissue; and

delivering an electrical signal to the conductor to heat the ferromagnetic coating and treating the tissue with heat created in the ferromagnetic coating.

7. The method according to claim 6, wherein the ferromagnetic coating is heated to a temperature above about 40 degrees Centigrade and below a Curie temperature of the ferromagnetic coating.

8. The method according to claim 6, wherein the transducer is an ultrasonic transducer.

9. The method according to claim 6, wherein the surgical instrument further comprises a lumen for aspirating in the surgical site.

10. The method according to claim 6, wherein the surgical instrument further comprises a lumen for delivering a substance to the surgical site.

11. The method according to claim 10, wherein the lumen is used to deliver saline.

12. The method according to claim 10, wherein the lumen is used to deliver a thermally activatable substance.

13. The method according to claim 12, wherein the heat created in the ferromagnetic coating is used to activate the thermally activatable substance.

14. The method according to claim 8, wherein the ultrasonic transducer causes the body to oscillate in a circular motion.