Electrosurgical instrument including a sensor

• US 9,603,652 B2
• Filed: 08/21/2008
• Issued: 03/28/2017
• Est. Priority Date: 08/21/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Carlton, John D., Odom, Darren
• Primary Examiner(s): GIULIANI, THOMAS ANTHONY
• Application Number:
  US12/195,624
• Publication Number:
  US 20100049187A1
• Time in Patent Office: 3,141 Days
• Field of Search: 606/38, 606/42, 606/52, 606/41, 607 98-100, 607/102, 607/115
• US Class Current: 1/1
• 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 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2017/00057 Light
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61B 5/0008 Temperature signals
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence

Abstract

An electrosurgical system includes an electrosurgical generator, an electrosurgical instrument, an optical clarity sensor and a control component. The electrosurgical generator generates electrosurgical energy for use during electrosurgery. The electrosurgical instrument is coupled to the electrosurgical generator and treats tissue. The optical clarity sensor is coupled to the electrosurgical generator and is adapted to measure tissue with at least two optical frequencies. The control component is operatively coupled to the optical clarity sensor and receives sensor data therefrom. The control component communicates control instructions to the electrosurgical generator to control the generation of the electrosurgical energy.

Claims

1. An electrosurgical system, comprising:

an electrosurgical generator configured to generate electrosurgical energy for use during electrosurgery;

an electrosurgical instrument operatively coupled to the electrosurgical generator and configured to treat tissue;

a light source operatively coupled to the electrosurgical generator, the light source configured to transmit light through a first side of the tissue;

an optical clarity sensor operatively coupled to the electrosurgical generator and configured to detect light from the light source transmitted through the tissue at a second, opposing side of the tissue, wherein the optical clarity sensor is adapted to measure the light transmitted through the tissue at at least two optical frequencies, wherein the light at a first optical frequency of the at least two optical frequencies is readily absorbed by water and the light at a second optical frequency of the at least two optical frequencies is readily absorbed by protein found in tissue; and

a control component operatively coupled to the optical clarity sensor configured to receive sensor data therefrom, wherein the control component is configured to compare absorption characteristics of the tissue at the at least two optical frequencies and communicate control instructions to the electrosurgical generator to control the generation of the electrosurgical energy.

2. An electrosurgical system according to claim 1, wherein the sensor data includes at least one optical clarity measurement of tissue, wherein the control component is configured to instruct the electrosurgical generator to generate the electrosurgical energy corresponding to the at least one optical clarity measurement corresponding to tissue being less than about 60 degrees Celsius.

3. An electrosurgical system according to claim 1, wherein the sensor data includes at least one optical clarity measurement of tissue, wherein the control component is configured to instruct the electrosurgical generator to generate the electrosurgical energy corresponding to the at least one optical clarity measurement being less than about 100 degrees Celsius.

4. An electrosurgical system according to claim 1, wherein the sensor data includes at least one optical clarity measurement of tissue, wherein the control component is configured to instruct the electrosurgical generator to generate the electrosurgical energy corresponding to the at least one optical clarity measurement being in a predetermined range.

5. An electrosurgical system according to claim 1, wherein the sensor data includes at least one optical clarity measurement of tissue, wherein the control component is configured to instruct the electrosurgical generator to generate the electrosurgical energy when the at least one optical clarity measurement corresponds to tissue hydration being within a predetermined range.

6. An electrosurgical system according to claim 1, wherein the electrosurgical instrument includes:

a shaft having a first jaw member and a second jaw member at a distal end thereof, at least one of said jaw members including an electrode disposed thereon configured to apply the electrosurgical energy to tissue, wherein at least one of the jaw members includes the optical clarity sensor disposed thereon and the other jaw member includes the light source disposed thereon;

a drive assembly operatively coupled to the shaft which is positionable to move at least one of the first jaw member or second jaw member relative to the other from a first position wherein the first jaw member is disposed in spaced relation relative to the second jaw member to a second position wherein the first and second jaw members are configured to grasp tissue; and

a movable handle which actuates the drive assembly.

7. An electrosurgical system according to claim 1, wherein the electrosurgical instrument includes:

a first shaft having a first jaw member; and

a second shaft having a second jaw member, wherein the second shaft is pivotally connected to the first shaft, at least one of said jaw members includes an electrode disposed thereon configured to apply the electrosurgical energy to tissue, at least one of the jaw members includes the optical clarity sensor disposed thereon.

8. The electrosurgical system according to claim 1, wherein an optical frequency of the at least two optical frequencies is a reference frequency.

9. The electrosurgical system according to claim 1, wherein an optical frequency of the at least two optical frequencies is adapted such that water is substantially translucent to the optical frequency.

10. The electrosurgical system according to claim 1, wherein the light at the first optical frequency of the at least two optical frequencies is adapted to be substantially absorbed by water and the light at the second optical frequency of the at least two optical frequencies is adapted such that water is substantially translucent to the second optical frequency.

11. The electrosurgical system according to claim 10, wherein the sensor data includes a first measurement of the first optical frequency and a second measurement of the second optical frequency, wherein the electrosurgical generator is configured to compare the first measurement to the second measurement.

12. The electrosurgical system according to claim 10, wherein the sensor data includes a first measurement of the first optical frequency and a second measurement of the second optical frequency, wherein the electrosurgical generator is configured to compare the first measurement to the second measurement such that at least one of tissue hydration, tissue temperature, optical clarity and tissue thickness is determined.