Apparatus for performing an electrosurgical procedure

• US 8,491,626 B2
• Filed: 06/02/2010
• Issued: 07/23/2013
• Est. Priority Date: 06/02/2010
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Roy, Jeffrey M., Allen, James D. IV
• Primary Examiner(s): PEFFLEY, MICHAEL F
• Application Number:
  US12/792,262
• Publication Number:
  US 20110301602A1
• Time in Patent Office: 1,147 Days
• Field of Search: 606/51, 606/52, 606205-207
• US Class Current: 606/205
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• 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 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00876 magnetic
• CPC Class Codes: A61B 2017/2932 Transmission of forces to jaw members
• CPC Class Codes: A61B 2018/0063 Sealing

Abstract

An endoscopic forceps is provided and includes a housing having a shaft that extends therefrom. An end effector assembly is operatively connected to a distal end of the shaft and includes a pair of first and second jaw members that are pivotably coupled to one another and movable relative to one another. The first and second jaw members are disposed in a first configuration, wherein the first and second jaw members are disposed in spaced relation relative to one another, to a second configuration, wherein the first and second jaw members cooperate to grasp tissue therebetween. A magnetic actuation mechanism is operably coupled to one or both of the first and second jaw members and configured to generate opposing magnetic fields on each of the first jaw and second jaw members to actuate the first and second jaw members between the first and second configurations.

Claims

1. An endoscopic forceps, comprising:

a housing having a shaft that extends therefrom and defines a longitudinal axis therethrough;

an end effector assembly operatively connected to a distal end of the shaft and including a pair of first and second jaw members, the first and second jaw members pivotably coupled to one another and movable relative to one another from a first configuration wherein the jaw members are in spaced relation relative to one another, to a second configuration wherein the jaw members cooperate to grasp tissue therebetween; and

a magnetic actuation mechanism including at least three permanent magnets operably associated with at least one of the first and second jaw members and configured to generate opposing magnetic fields therebetween to actuate the jaw member between the first and second configurations,

wherein at least two of the at least three permanent magnets are operably disposed on one of the first and second jaw members and at least one of the at least three permanent magnets is operably disposed on the other one of the first and second jaw members at a location that is proximal a pivoting member that pivotably couples the first and second jaw members,

wherein the at least two magnets are movable relative to the at least one permanent magnet.

2. An endoscopic forceps according to claim 1, wherein when the opposing magnetic fields at each of the first and second jaw members is the same polarity, the first and second jaw members are caused to move to the first configuration and when the opposing magnetic fields at the first and second jaw members is a different polarity, the first and second jaw members are caused to move to the second configuration.

3. An endoscopic forceps according to claim 1, wherein the at least three magnets are operably disposed on the first and second jaw members at a location that is distal a pivoting member that pivotably couples the first and second jaw members.

4. An endoscopic forceps according to claim 1, wherein the endoscopic forceps further includes a drive assembly operably associated with a movable handle that is operably coupled to the housing, the drive assembly including a drive wire that operably couples to the at least two permanent magnets.

5. An endoscopic forceps according to claim 4, wherein proximal movement of the drive wire causes the magnetic actuation mechanism to move the first and second jaw members from the first configuration to the second configuration.

6. An endoscopic forceps, comprising:

a housing having a shaft that extends therefrom and defines a longitudinal axis therethrough;

an end effector assembly operatively connected to a distal end of the shaft and including a pair of first and second jaw members, the first and second jaw members pivotably coupled to one another and movable relative to one another from a first configuration, wherein the first and second jaw members are disposed in spaced relation relative to one another, to a second configuration, wherein the first and second jaw members cooperate to grasp tissue therebetween; and

a magnetic actuation mechanism operably coupled to each of the first and second jaw members and configured to generate a magnetic field at each of the first jaw and second jaw members, the magnetic actuation mechanism including at least two magnets, wherein each of the at least two magnets operable couple to a respective first and second jaw member,

wherein when the magnetic field at each of the first and second jaw members is the same polarity, the first and second jaw members are caused to move to the first configuration and when the magnetic field at the first and second jaw members is a different polarity, the first and second jaw members are cause to move to the second configuration,

wherein one of the at least two magnets is an electromagnet and the other one of the at least two magnets is a permanent magnet.

7. An endoscopic forceps according to claim 6, wherein the electromagnet is in operative communication with a control module that is in operative communication with an electrosurgical generator configured to supply electrosurgical energy to the endoscopic forceps, the control module configured to control current flow through the electromagnet to adjust the polarity of the electromagnetic field that is generated by the electromagnet.

8. An endoscopic forceps, comprising:

a housing having a shaft that extends therefrom and defines a longitudinal axis therethrough;

an end effector assembly operatively connected to a distal end of the shaft and including a pair of first and second jaw members, the first and second jaw members pivotably coupled to one another and movable relative to one another from a first configuration wherein the jaw members are in spaced relation relative to one another, to a second configuration wherein the jaw members cooperate to grasp tissue therebetween; and

a magnetic actuation mechanism operably associated with at least one of the first and second jaw members and configured to generate opposing magnetic fields therebetween to actuate the jaw member between the first and second configurations,

wherein the magnetic actuation mechanism includes at least two electromagnets configured to provide an electromagnetic field at the first and second jaw members.

9. An endoscopic forceps according to claim 8, wherein at least one of the at least two electromagnets is operably disposed on one of the first and second jaw members and at least one of the at least two electromagnets is operably disposed on the other one of the first and second jaw members.

10. An endoscopic forceps according to claim 8, wherein the at least two electromagnets are operably disposed on the respective first and second jaw members at a location that is proximal a pivoting member that pivotably couples the first and second jaw members.

11. An endoscopic forceps according to claim 8, wherein the at least two electromagnets are in operative communication with a control module that is in operative communication with an electrosurgical generator configured to supply electrosurgical energy to the endoscopic forceps, the control module configured to control current flow through the at least two electromagnets to adjust the polarity of the electromagnetic field that is generated by the at least two electromagnets.

12. An endoscopic forceps according to claim 8, wherein the first and second members include respective proximal ends that are made from a ferromagnetic material.

13. An endoscopic forceps, comprising:

a housing having a shaft that extends therefrom and defines a longitudinal axis therethrough;

an end effector assembly operatively connected to a distal end of the shaft and including a pair of first and second jaw members, the first and second jaw members pivotably coupled to one another and movable relative to one another from a first configuration, wherein the first and second jaw members are disposed in spaced relation relative to one another, to a second configuration, wherein the first and second jaw members cooperate to grasp tissue therebetween; and

a magnetic actuation mechanism operably coupled to each of the first and second jaw members and configured to generate a magnetic field at each of the first jaw and second jaw members, the magnetic actuation mechanism including at least two magnets, wherein each of the at least two magnets operable couple to a respective first and second jaw member,

wherein when the magnetic field at each of the first and second jaw members is the same polarity, the first and second jaw members are caused to move to the first configuration and when the magnetic field at the first and second jaw members is a different polarity, the first and second jaw members are cause to move to the second configuration,

wherein the at least two magnets are operably disposed on the respective first and second jaw members at a location that is proximal a pivoting member that pivotably couples the first and second jaw members.