Monopolar pencil with integrated bipolar/ligasure tweezers

• US 9,023,035 B2
• Filed: 01/06/2012
• Issued: 05/05/2015
• Est. Priority Date: 01/06/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Allen, James D. IV, Kendrick, Stephen M., Butcher, Dennis W., Joseph, Daniel A.
• Primary Examiner(s): Layno, Carl H
• Assistant Examiner(s): Ghand, Jennifer
• Application Number:
  US13/344,729
• Publication Number:
  US 20130178852A1
• Time in Patent Office: 1,215 Days
• Field of Search: 606 41- 42, 606 50- 51
• US Class Current: 606/41
• CPC Class Codes: A61B 18/12 by passing a current through the tissue to be heated, e.g. high-frequency current
• 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 18/1447 wherein sliding surfaces cause opening/closing of the end effectors
• CPC Class Codes: A61B 2018/00642 with feedback, i.e. closed loop control
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00708 switching the power on or off
• CPC Class Codes: A61B 2018/00773 Sensed parameters
• CPC Class Codes: A61B 2018/00904 Automatic detection of target tissue
• CPC Class Codes: A61B 2018/00922 by switching or controlling the treatment energy directly within the hand-piece
• CPC Class Codes: A61B 2018/00928 by sending a signal to an external energy source
• CPC Class Codes: A61B 2018/00958 for switching between different working modes of the main function
• CPC Class Codes: A61B 2018/00994 combining two or more different kinds of non-mechanical energy or combining one or more non-mechanical energies with ultrasound
• CPC Class Codes: A61B 2018/1253 monopolar
• CPC Class Codes: A61B 2018/126 bipolar

Abstract

An electrosurgical pencil with integrated ligasure tweezers includes—an elongated housing having an open distal end and an actuator operatively associated therewith. First and second jaw members extend distally through the open distal end of the elongated housing and are transitionable between a closed position and an open position upon actuation of an actuator. One or both of the jaw members is configured to treat tissue with monopolar energy and both jaw members are configured to treat tissue with bipolar energy. One or more switches is operably coupled to a controller disposed in the housing and configured to activate the first and second jaw members to treat tissue with monopolar and bipolar energy.

Claims

1. An electrosurgical pencil, comprising:

an elongated housing having an open distal end, the elongated housing including an actuator operably associated therewith;

first and second jaw members extending distally through the open distal end of the elongated housing and transitionable between a closed position and an open position upon actuation of an actuator, at least one of the jaw members configured to treat tissue with monopolar energy and both jaw members configured to treat tissue with bipolar energy;

at least one switch operably coupled to a controller disposed in the housing, the at least one switch configured to activate the first and second jaw members to treat tissue with monopolar and bipolar energy;

a sensor operably coupled to the pencil and configured to sense tissue disposed between the jaw members, the sensor providing a signal to the controller to disable bipolar activation in the absence of tissue sensed between the jaw members; and

an intensity controller that controls the amount of energy delivered to tissue when treating tissue with monopolar energy, the intensity controller including a pressure sensitive activator that adjusts the amount of electrosurgical energy based on the amount of pressure applied to the intensity controller.

2. A surgical pencil according to claim 1, further comprising a sensor operably coupled to the pencil and configured to sense tissue disposed between the jaw members, the sensor providing a signal to the controller to disable monopolar activation if tissue is sensed between the jaw members.

3. A surgical pencil according to claim 1, wherein the intensity controller is a slide potentiometer.

4. A surgical pencil according to claim 1, wherein the actuator is pressure sensitive and adjusts the position of the jaw members relative to one another based on the amount of pressure applied to the actuator.

5. A surgical pencil according to claim 4, wherein the jaw members are biased in the closed position.

6. A surgical pencil according to claim 1, wherein the jaw members are electrically isolated from one another such that the jaw members may treat tissue with bipolar energy when the jaw members are disposed in the closed position.

7. A surgical pencil according to claim 1, wherein the actuator protrudes from a side portion of the elongated housing.

8. A surgical pencil according to claim 1, wherein the elongated housing includes two flexible portions disposed on opposite sides thereof, the flexible portions being adjacent to the actuator such that compression of the two flexible portions in a direction substantially perpendicular to the longitudinal axis results in actuation of the actuator.

9. A surgical pencil according to claim 1, wherein the open distal end of the elongated housing includes a flexible section, the flexible section configured to allow the first and second jaw members to be radially spaced at a diameter larger than the open distal end of the elongated housing when in the open position.

10. An electrosurgical pencil, comprising:

an elongated housing having first and second jaw members extending through a distal end thereof, the first and second jaw members transitionable between a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members are approximated relative to one another, at least one of the jaw members configured to treat tissue with monopolar energy and both jaw members configured to treat tissue with bipolar energy;

an actuator operably coupled to the jaw members and actuatable to transition the jaw members between the first and second positions, the actuator operably coupled to a controller that senses the disposition of the jaw members;

a switch disposed in the housing in operative communication with the controller, the switch configured to activate the jaw members with bipolar energy if the jaw members are disposed in the first position and to activate at least one of jaw members with monopolar energy if the jaw members are disposed in the second position;

an intensity controller that controls the amount of energy delivered to tissue when treating tissue with monopolar energy, the intensity controller including a pressure sensitive activator that adjusts the amount of electrosurgical energy based on the amount of pressure applied to the intensity controller.

11. A surgical pencil according to claim 10, wherein the intensity controller is a slide potentiometer.

12. A surgical pencil according to claim 10, wherein the actuator is pressure sensitive and adjusts the position of the jaw members relative to one another based on the amount of pressure applied to the actuator.

13. A surgical pencil according to claim 10, wherein the jaw members are biased in the second position.

14. A surgical pencil according to claim 10, wherein the actuator protrudes from a side portion of the elongated housing.

15. A surgical pencil according to claim 14, wherein the side portion of the elongated housing includes a flexible portion covering the actuator, wherein the application of force to the flexible portion in a direction substantially perpendicular to the longitudinal axis results in actuation of the actuator.