Apparatus, system and method for performing an electrosurgical procedure

• US 8,535,312 B2
• Filed: 09/25/2008
• Issued: 09/17/2013
• Est. Priority Date: 09/25/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Horner, Glenn A.
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): SCHELL, LAURA C
• Application Number:
  US12/237,582
• Publication Number:
  US 20100076432A1
• Time in Patent Office: 1,818 Days
• Field of Search: 606/51, 606/52, 606/49, 606/50
• US Class Current: 606/52
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 2017/00022 Sensing or detecting at the treatment site
• CPC Class Codes: A61B 2018/00345 Vascular system
• CPC Class Codes: A61B 2018/00404 Blood vessels other than those in or around the heart
• CPC Class Codes: A61B 2018/00619 Welding
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61B 2018/00875 Resistance or impedance

Abstract

An electrosurgical apparatus includes a housing having at least one shaft extending therefrom that defines a longitudinal axis therethrough. The shaft operatively supports an end effector assembly at a distal end thereof. The end effector assembly includes first and second jaw members pivotably connected to each other and moveable from an open spaced apart position to a closed position to grasp tissue. An electrically conductive tissue sealing plate is operatively coupled to each of the jaw members. At least one of the jaw members has a serrated edge disposed thereon for selectively sectioning tissue upon rotation of the end effector assembly about the longitudinal axis. The electrically conductive tissue sealing plates are adapted to connect to an electrosurgical energy source. The electrosurgical apparatus operably communicates with a control system configured to regulate the delivery of electrosurgical energy from the source of electrosurgical energy to the electrically conductive tissue sealing plate on each of the jaw members.

Claims

1. An electrosurgical apparatus, comprising:

a housing having at least one shaft extending therefrom that defines a longitudinal axis therethrough, the shaft operatively supporting an end effector assembly at a distal end thereof, the end effector assembly including first and second jaw members pivotably connected to each other and moveable from an open spaced apart position to a closed position to grasp tissue; and

an electrically conductive tissue sealing plate operatively coupled to each of the jaw members, only one of the jaw members having a serrated edge disposed on only one edge thereof for selectively sectioning tissue upon rotation of the end effector assembly about the longitudinal axis, the electrically conductive tissue sealing plates adapted to connect to an electrosurgical energy source,

wherein the electrosurgical apparatus operably communicates with a control system configured to regulate the delivery of electrosurgical energy from the source of electrosurgical energy to the electrically conductive tissue sealing plate on each of the jaw members,

the control system configured to generate a signal based on at least one tissue property, the signal configured to indicate to a user to apply a cutting force to tissue.

2. An electrosurgical apparatus according to claim 1, wherein the serrated edge includes a series of teeth disposed linearly along a periphery of at least one of the first and second jaw members.

3. An electro surgical apparatus according to claim 2, wherein each of the teeth of the serrated edge includes a pair of base sides that meet to form a sharpened apex therebetween.

4. An electrosurgical apparatus according to claim 1, wherein the serrated edge is electrically insulated from the tissue sealing plate on each of the jaw members.

5. An electrosurgical apparatus according to claim 1, wherein the serrated edge is at least partially made from a non-conductive material.

6. An electrosurgical apparatus according to claim 1, further comprising:

at least one sensor disposed on the end effector assembly and in operative communication with the control system, the at least one sensor configured to sense at least one tissue property.

7. An electrosurgical apparatus according to claim 6, wherein the control system regulates the delivery of electrosurgical energy from the source of electrosurgical energy to the tissue sealing plates based on the at least one sensed tissue property.

8. An electrosurgical apparatus according to claim 7, wherein the at least one sensed tissue property is one of tissue impedance and tissue temperature.

9. An electrosurgical apparatus, comprising:

a housing having at least one shaft extending therefrom that defines a longitudinal axis therethrough, the shaft operatively supporting an end effector assembly at a distal end thereof, the end effector assembly including first and second jaw members pivotably connected to each other and moveable from an open spaced apart position to a closed position to grasp tissue; and

an electrically conductive tissue sealing plate operatively coupled to each of the jaw members, at least one of the jaw members having a serrated edge disposed thereon for selectively sectioning tissue upon rotation of the end effector assembly about the longitudinal axis, the serrated edge being electrically insulated from the electrically conductive seal plates and including a series of teeth disposed linearly along only one edge of only one of the first and second jaw members, the electrically conductive tissue sealing plates adapted to connect to an electrical surgical energy source,

wherein the electrosurgical apparatus operably communicates with a control system configured to regulate the delivery of electrosurgical energy from the source of electrosurgical energy to the electrically conductive tissue sealing plate on each of the jaw members,

the control system configured to generate a signal based on at least one tissue property, the signal configured to indicate to a user to apply a cutting force to tissue.

10. A method for performing an electrosurgical procedure, the method comprising the steps of:

providing an electrosurgical apparatus, including;

a housing having at least one shaft extending therefrom that defines a longitudinal axis therethrough, the shaft operatively supporting an end effector assembly at a distal end thereof, the end effector assembly including first and second jaw members pivotably connected to each other and moveable from an open spaced apart position to a closed position to grasp tissue;

an electrically conductive tissue sealing plate disposed on each of the jaw members, at least one of the jaw members having a serrated edge disposed thereon for selectively sectioning tissue; and

wherein the electrosurgical apparatus operably communicates with a control system configured to regulate the delivery of electrosurgical energy from the source of electrosurgical energy to the electrically conductive tissue sealing plate on each of the jaw members;

delivering electrosurgical energy from the source of electrosurgical energy to each of the electrically conductive tissue sealing plates to achieve a desired tissue effect; and

applying a rotational force to the end effector assembly about the longitudinal axis such that the serrated edge severs at least a portion of the effected tissue from the rest of the effected tissue.

11. A method for performing an el ectrosurgical procedure according to claim 10, further comprising the step of:

providing tension adjacent to at least a portion of the effected tissue to facilitate separation of at least a portion of the effected tissue from the rest of the effected tissue.

12. A method for performing an electrosurgical procedure according to claim 10, further comprising the step of:

delivering electrosurgical energy to the electrically conductive tissue sealing plates simultaneously.

13. A method for performing an electrosurgical procedure according to claim 10, further comprising the step of:

delivering electrosurgical energy to the electrically conductive tissue sealing plates consecutively.

14. A method for performing an el ectrosurgical procedure according to claim 10, wherein the step of applying a rotational force includes applying the rotational force simultaneously with delivering electrosurgical energy from the source of electrosurgical energy to the electrically conductive tissue sealing plates.

15. A method for performing an electro surgical procedure according to claim 10, wherein the step of applying a rotational force includes applying the rotational force subsequent to at least one of an audible indication and a visible indication.

16. A method for performing an electro surgical procedure according to claim 10, further comprising the steps of:

quantifying at least one of an electrical parameter and a thermal parameter during tissue sectioning; and

providing a signal to a user to apply a force to tissue based on the at least one quantified parameter.

17. A method for performing an electrosurgical procedure according to claim 10, further comprising the steps of:

sensing at least one tissue property; and

regulating the delivery of electrosurgical energy from the source of electrosurgical energy to the electrically conductive tissue sealing plates based on the at least one sensed tissue property.