Electrosurgical device having a tissue reduction sensor

• US 7,951,148 B2
• Filed: 02/06/2004
• Issued: 05/31/2011
• Est. Priority Date: 03/08/2001
• Status: Expired due to Fees

• Current Assignee: Medtronic Advanced Energy LLC (Medtronic Plc)
• Original Assignee: Salient Surgical Technologies Incorporated (Medtronic Plc)
• Inventors: McClurken, Michael E.
• Primary Examiner(s): PEFFLEY, MICHAEL F
• Application Number:
  US10/773,503
• Publication Number:
  US 20040162552A1
• Time in Patent Office: 2,671 Days
• Field of Search: 606/27, 606/40, 606/41, 606/31, 606/32, 600/373, 600/372, 604104-107, 604 19- 21, 604/93, 604/500, 604/113, 607/1, 607/2, 607/96, 607/101, 607/103, 607/122
• US Class Current: 606/51
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 2017/00022 Sensing or detecting at the treatment site
• CPC Class Codes: A61B 2090/035 preventing further rotation
• CPC Class Codes: A61B 2090/061 for measuring dimensions, e.g. length
• CPC Class Codes: A61B 2090/065 for measuring contact or contact pressure

Abstract

An electrosurgical device for use in surgical procedures is disclosed. The electrosurgical device comprises a main body having a proximal end and a distal end. A heat delivery modality is situated and arranged at the distal end of the main body. A sensor arrangement is also situated and arranged at the distal end of the main body. The heat delivery modality provides thermal energy to a tissue being treated while the sensor arrangement is configured to engage and detect a change in dimension of the tissue being treated. Accordingly, the electrosurgical device of the present disclosure allows a surgeon to precisely achieve the desired amount of dimensional change of the tissue being treated.

Claims

1. An electrosurgical instrument having an end effector, the end effector configured to simultaneously provide radio frequency power and a fluid to treat tissue, the power sufficient to cause a dimensional change of the tissue, the end effector comprising:

at least one electrode to deliver the radio frequency power to the tissue;

at least one fluid outlet to deliver the fluid to the tissue;

a dimensional change sensor configured to grasp the tissue and move relative to a dimensional change of the tissue while having a grasp of the tissue;

wherein the dimensional change sensor comprises a first clamp having a first jaw member and a second jaw member and a second clamp having a first jaw member and a second jaw member, the first and second jaw members of the first clamp being configured in an opposing manner to grasp tissue therebetween when the first and second jaws of the first clamp are moved together, and the first and second jaw members of the second clamp being configured in to grasp tissue therebetween when the first and second jaws of the second clamp are moved together; and

wherein the first jaw members of the first and second clamps are configured to move in correspondence with the dimensional change of the tissue, wherein the at least one electrode is disposed between either the first jaw members of the first and second clamps or the second jaw members of the first and second clamps to treat tissue grasped by the jaw members of the first and second clamps such that the dimensional change in the tissue caused by such treatment will cause a corresponding change in the distance between the first jaw members of the first and second clamps.

2. The electrosurgical instrument of claim 1 wherein:

the dimensional change sensor is configured to provide feedback to vary the radio frequency power according to the dimensional change of the tissue.

3. The electrosurgical instrument of claim 1 wherein:

the dimensional change sensor is configured to provide feedback to treat the tissue to a predetermined dimensional change.

4. The electrosurgical instrument of claim 1 wherein:

the dimensional change sensor is configured to provide feedback to measure the dimensional change.

5. The electrosurgical instrument of claim 1 wherein:

the dimensional change sensor is operatively associated with a device to provide a measurement of the dimensional change.

6. The electrosurgical instrument of claim 1 wherein:

the dimensional change sensor is operatively associated with means to provide a measurement of the dimensional change.

7. The electrosurgical instrument of claim 1 wherein:

the dimensional change sensor comprises a contact sensor.

8. The electrosurgical instrument of claim 1 wherein:

the dimensional change sensor comprises a shrinkage sensor; and

the dimension change of the tissue comprises a shrinkage of the tissue.

9. The electrosurgical instrument of claim 8 wherein:

the shrinkage sensor is configured to move relative to the shrinkage of the tissue.

10. The electrosurgical instrument of claim 8 wherein:

the shrinkage sensor is configured to provide feedback to vary the radio frequency power according to the shrinkage of the tissue.

11. The electrosurgical instrument of claim 8 wherein:

the shrinkage sensor is configured to provide feedback to treat the tissue to a predetermined shrinkage.

12. The electrosurgical instrument of claim 8 wherein:

the shrinkage sensor is configured to provide feedback to measure the shrinkage.

13. The electrosurgical instrument of claim 8 wherein:

the shrinkage sensor is operatively associated with a device to provide a measurement of the shrinkage.

14. The electrosurgical instrument of claim 8 wherein:

the shrinkage sensor is operatively associated with means to provide a measurement of the shrinkage.

15. The electrosurgical instrument of claim 1 further comprising:

a monopolar electrosurgical instrument.

16. The electrosurgical instrument of claim 1 further comprising:

a bipolar electrosurgical instrument.

17. The electrosurgical instrument of claim 1 wherein:

the at least one fluid outlet is positioned to provide the fluid onto the at least one electrode.

18. The electrosurgical instrument of claim 1 wherein:

the at least one fluid outlet is at least partially defined by the at least one electrode.

19. The electrosurgical instrument of claim 1 wherein:

the at least one fluid outlet is at least partially defined by a hole in the at least one electrode.

20. The electrosurgical instrument of claim 1 wherein:

the at least one fluid outlet is configured to provide the fluid to wet the at least one electrode.

21. The electrosurgical instrument of claim 1 wherein:

the at least one electrode comprises a plurality of electrodes.

22. The electrosurgical instrument of claim 1 wherein:

the at least one fluid outlet comprises a plurality of fluid outlets.

23. The electrosurgical instrument of claim 1 wherein:

the at least one electrode comprises a first electrode and a second electrode; and

the at least one fluid outlet comprises a first fluid outlet and a second fluid outlet.

24. The electrosurgical instrument of claim 23 wherein:

the first fluid outlet is positioned to provide the fluid onto the first electrode; and

the second fluid outlet is positioned to provide the fluid onto the second electrode.

25. The electrosurgical instrument of claim 23 wherein:

the first fluid outlet is configured to provide the fluid to wet the first electrode; and

the second fluid outlet is configured to provide the fluid to wet the second electrode.

26. The electrosurgical instrument of claim 1 wherein:

wherein the second jaw members of the first and second clamps are configured to move in correspondence with the dimensional change of the tissue, wherein the dimensional change in the tissue will cause a corresponding change in the distance between the second jaw members of the first and second clamps.

27. The electrosurgical instrument of claim 1 wherein:

a distance between the first and second jaw member of the first clamp is selectively adjustable to either increase or decrease a compressive force applied to the tissue being treated, and

a distance between the first and second jaw member of the second clamp is selectively adjustable to either increase or decrease a compressive force applied to the tissue being treated.

28. An electrosurgical instrument comprising:

at least one electrode;

a dimensional change sensor configured to grasp the tissue and move relative to a dimensional change of the tissue while having a grasp of the tissue;

wherein the dimensional change sensor comprises a first clamp having a first jaw member and a second jaw member and a second clamp having a first jaw member and a second jaw member, the first and second jaw members of the first clamp being configured in an opposing manner to grasp tissue therebetween when the first and second jaws of the first clamp are moved together, and the first and second jaw members of the second clamp being configured in an opposing manner to grasp tissue therebetween when the first and second jaws of the second clamp are moved together; and

wherein the first jaw members of the first and second clamps are configured to move in correspondence with the dimensional change of the tissue, wherein the at least one electrode is disposed between either the first jaw members of the first and second clamps or the second jaw members of the first and second clamps to treat tissue grasped by the jaw members of the first and second clamps such that the dimensional change in the tissue caused by such treatment will cause a corresponding change in the distance between the first jaw members of the first and second clamps.

29. The electrosurgical instrument of claim 28 further comprising:

at least one fluid outlet positioned to provide a fluid onto the at least one electrode.

30. The electrosurgical instrument of claim 28 wherein:

a distance between the first and second jaw members of the first clamp is selectively adjustable to either increase or decrease a compressive force applied to the tissue being treated, and

a distance between the first and second jaw members of the second clamp is selectively adjustable to either increase or decrease a compressive force applied to the tissue being treated.

31. The electrosurgical instrument of claim 28 wherein:

wherein the second jaw members of the first and second clamps are configured to move in correspondence with the dimensional change of the tissue, wherein the dimensional change in the tissue will cause a corresponding change in the distance between the second jaw members of the first and second clamps.