Electrosurgical system having a sensor for monitoring smoke or aerosols

• US 8,652,128 B2
• Filed: 04/10/2012
• Issued: 02/18/2014
• Est. Priority Date: 08/11/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Ward, Arlen K.
• Primary Examiner(s): DeSanto, Matthew F
• Application Number:
  US13/443,066
• Publication Number:
  US 20120197250A1
• Time in Patent Office: 679 Days
• Field of Search: 606 32- 52, 607/115
• US Class Current: 606/38
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 2018/00595 Cauterization
• CPC Class Codes: A61B 2018/00642 with feedback, i.e. closed loop control
• CPC Class Codes: A61B 2018/00684 using lookup tables
• CPC Class Codes: A61B 2218/008 for smoke evacuation

Abstract

An electrosurgical system includes an electrosurgical generator configured to generate electrosurgical energy and a sensor. The sensor is coupled to the electrosurgical generator and senses aerosol and/or smoke generated during application of the electrosurgical energy. The sensor generates data in response to the sensed aerosol and/or smoke and communicates the data to the electrosurgical generator. The electrosurgical generator generates the electrosurgical energy as a function of the data.

Claims

1. A method of treating tissue, comprising:

continuously supplying electrosurgical energy generated by an electrosurgical generator to tissue to achieve a desired tissue effect, the continuous supplying of electrosurgical energy including;

applying the electrosurgical energy to the tissue at a first energy value;

sensing at least one of an aerosol and a smoke generated during application of the electrosurgical energy; and

adjusting the supply of the electrosurgical energy to apply the electrosurgical energy to the tissue at a second energy value as a function of the sensed at least one of the aerosol and the smoke to adjust a generation rate of the at least one of the aerosol and the smoke.

2. The method according to claim 1, wherein sensing at least one of the aerosol and the smoke utilizes a quartz crystal microbalance.

3. The method according to claim 2, further comprising:

determining the resonance frequency of the quartz crystal microbalance.

4. The method according to claim 1, wherein adjusting the supply of the electrosurgical energy includes applying the electrosurgical energy to the tissue at the second energy value such that the generation rate of the at least one of the aerosol and the smoke is below a predetermined threshold.

5. The method according to claim 1, wherein adjusting the supply of the electrosurgical energy includes applying the electrosurgical energy to the tissue at the second energy value such that the generation rate of the at least one of the aerosol and the smoke is about zero.

6. The method according to claim 1, wherein adjusting the supply of the electrosurgical energy includes applying the electrosurgical energy to the tissue at the second energy value such that the generation rate of the at least one of the aerosol and the smoke is within a predetermined range.