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US 5,273,524 AGranted
Electrosurgical device
AssigneeEthicon, Inc.
InventorsWilliam D. Fox, Richard F. Schwemberger, Edward J. Biehle, IV, Harry C. Parkhurst
Life of this patent
Estimating the term…
Abstract
An electrosurgical device for laparoscopic use in tissue dissection and coagulation. The device includes a barrel member having a dissection tip at the distal end thereof that is connected to a source of electrical energy. An insulating sheath member surrounds the barrel member. The sheath member is movable between a first position wherein the distal end thereof extends distally beyond the dissection tip and a second position wherein the dissection tip extends distally beyond the distal end portion of the sheath member. The device includes means to flush and vacuum the surgical site. The device also includes pressure relief means to limit the internal pressure within the device.
Claims18
An electrosurgical device, comprising:
- a handle member;
- an elongated barrel member having a proximal end portion and a distal end portion, said proximal end portion being rigidly secured to said handle member;
- an electrode member extending outwardly from the distal end portion of said barrel member;
- means for connecting said electrode member to a source of electrical energy;
- an insulating sheath member surrounding said barrel member, said sheath member having a proximal end portion extending into said handle member and a distal end portion, said sheath member being movable with respect to said barrel member between a first position wherein said distal end portion of said sheath member extends distally beyond the distal end of said electrode member and a second position wherein the distal end portion of said electrode member extends distally beyond said distal end portion of said sheath member;
- control means for selectively controlling the movement of said sheath member between its first and second positions, wherein said control means includes a slide member being attached to said handle member so as to permit movement thereof between a first position wherein said sheath member is in its first position and a second position wherein said sheath member is in its second position;
- and wherein said slide member includes a activator portion that is positioned exterior of said handle member and a connector portion that is positioned inside said handle member and is secured to said proximal end portion of said sheath member, and a guide portion that extends between said activator portion and said connector portion, said guide portion including a slide section that extends through an elongated slot formed in said handle member.
4 more elements
An electrosurgical device, comprising:
- a handle member;
- an elongated barrel member having a proximal end portion and a distal end portion, said proximal end portion being rigidly secured to said handle member;
- an electrode member extending outwardly from the distal end portion of said barrel member;
- means for connecting said electrode member to a source of electrical energy;
- an insulating sheath member surrounding said barrel member, said sheath member having a proximal end portion extending into said handle member and a distal end portion, said sheath member being movable with respect to said barrel member between a first position wherein said distal end portion of said sheath member extends distally beyond the distal end of said electrode member and a second position wherein the distal end portion of said electrode member extends distally beyond said distal end portion of said sheath member;
- control means for selectively controlling the movement of said sheath member between its first and second positions;
- a manifold member positioned in said handle member, said manifold member being in communication with the proximal end portion of said barrel member;
- an irrigation tube positioned in said handle member, said irrigation tube having a first end portion in communication with said manifold member and a second end portion adapted to be connected to an irrigation unit;
- a vacuum tube positioned in said handle member, said vacuum tube having a first end portion in communication with said manifold member and a second end portion adapted to be connected to a vacuum source;
- a connector assembly, said connector assembly having an irrigation inlet port adapted to be connected to an irrigation unit and an irrigation outlet port connected to the second end portion of said irrigation tube in fluid communication with said irrigation inlet port through an irrigation flow channel extending therebetween, said connector assembly having a vacuum inlet port adapted to be connected to a vacuum source and a vacuum outlet port connected to the second end portion of said vacuum tube in fluid communication with said vacuum inlet port through a vacuum flow channel extending therebetween.
- wherein said connector assembly includes a shunt channel extending between said irrigation flow channel and said vacuum flow channel, said shunt channel having a pressure vent valve member associated therewith to vent excess pressure in said irrigation flow channel through said shunt channel into said vacuum flow channel.
8 more elements
An electrosurgical device, comprising:
- a handle member;
- an elongated barrel member having a proximal end portion and a distal end portion;
- an electrode member extending outwardly from the distal end portion of said barrel member;
- means for connecting said electrode member to a source of electrical energy;
- a manifold member positioned in said handle member in communication with the proximal end portion of said barrel member;
- an irrigation tube positioned in said handle member, said irrigation tube having a first end portion in communication with said manifold member and a second end portion adapted to be connected to an irrigation unit;
- a vacuum tube positioned in said handle member, said vacuum tube having a first end portion in communication with said manifold member and a second end portion adapted to be connected to a vacuum source;
- pressure vent means in communication with said irrigation tube for venting excess pressure therefrom, wherein said pressure vent means precludes the internal pressure in said irrigation tube from exceeding about 50 psig;
- and
- a connector assembly positioned in said handle member, said connector assembly having an irrigation inlet port adapted to be connected to an irrigation unit and an irrigation outlet port connected to the second end portion of said irrigation tube in fluid communication with said irrigation inlet port through an irrigation flow channel extending therebetween, said connector assembly having a vacuum inlet port adapted to be connected to a vacuum source and a vacuum outlet port connected to the second end portion of said vacuum tube in fluid communication with said vacuum inlet port through a vacuum flow channel extending therebetween, said connector assembly having a shunt channel extending between said irrigation flow channel and said vacuum flow channel, said pressure vent means being positioned in said shunt channel to vent excess pressure in said irrigation flow channel through said shunt channel into said vacuum flow channel.
7 more elements
Dependencies are inferred from the claim text.