An ultrapolar electrosurgery blade and an ultrapolar electrosurgery pencil that can be used in both monopolar and bipolar modes for cutting and coagulating tissue. The ultrapolar electrosurgery blade includes a non-conductive member with opposing planar sides having completely planar surfaces throughout, a cutting end with a sharp cutting edge, and an opposite non-cutting end, an active electrode located on one of the opposing planar sides of the non-conductive member, and a return electrode located on the other opposing planar side of the non-conductive member.

A surgical tool that includes a drive housing, an elongate shaft that extends from the drive housing, and an end effector arranged at a distal end of the elongate shaft and including a jaw secured to a jaw holder, the jaw providing a contact plate and the jaw holder defining a cable passage. A wrist couples the end effector to the elongate shaft and includes a distal clevis having an axle that rotatably mounts the jaw holder to the distal clevis. An electrical conductor extends from the drive housing, through the wrist and the cable passage, and terminates at the contact plate to supply electrical energy to the jaw.

This small-diameter endoscope surgical instrument comprises: an inner pipe 20 that has an outer diameter equal to that of a small-diameter endoscope 10 to be used, that is used for inserting the small-diameter endoscope surgical instrument into a body, and that is replaced with the small-diameter endoscope 10 after insertion thereof; a guide pipe 30 which is configured to have the small-diameter endoscope or the inner pipe inserted therethrough and which supports the small-diameter endoscope or the inner pipe so as to be movable in an axial direction; and a treatment pipe 40 which is configured to have the guide pipe inserted therethrough to support the guide pipe so as to be movable in the axial direction, and which has, at the leading end thereof, a treatment means such as an electrode, a blade, or a hook, wherein each of the small-diameter endoscope, inner pipe, guide pipe, and treatment pipe has an independent operation part at the proximate end thereof, and thus the rotation angle and the position in the axial direction thereof can be changed. The present invention enables, with a simple configuration, gripping or fixing of tissues, electrocautery, electrocoagulation, ablation, mobilization, separation, or traction of tissues, and further enables removal of blood clots, etc., stuck to a hook during surgery, and a sample extraction for biopsy.

Surgical devices, systems, and methods are provided for applying monopolar energy and bipolar energy to tissue. In one embodiment, a surgical device is provided with an end effector that has first and second jaws movable between an open position and a closed position, and a conductive member that extends through the end effector. The conductive member has a retracted position in which the conductive member is substantially disposed within the end effector and an extended position in which the conductive member extends at least partially distally beyond the end effector. The conductive member is configured to conduct energy through tissue adjacent thereto at least when the conductive member is in the extended position.

A surgical instrument includes a housing having a shaft extending distally therefrom, an end effector assembly disposed at a distal end of the shaft, a handle assembly coupled to the housing for manipulating the end effector assembly, a deployable assembly, at least one actuator for deploying and retracting the deployable assembly, and a closure member. The closure member is keyed to the actuator(s) and operably positioned relative to the movable handle of the handle assembly such that, upon rotation of the actuator(s) relative to the housing from an un-actuated position to an actuated position, the closure member is urged into contact with the movable handle to urge the movable handle from an initial position to a compressed position, thereby moving the end effector assembly to an approximated position.

The embodiments disclosed herein relate to various robotic and/or in vivo medical devices having compact joint configurations. Other embodiments relate to various medical device components, including forearms having grasper or cautery end effectors, that can be incorporated into certain robotic and/or in vivo medical devices.

A surgical instrument includes a shaft having a proximal end and a distal end. An end effector assembly includes an end effector body portion coupled to the distal end of the shaft. A cable having a distal end feature extending radially outwardly from the cable extends through the shaft between the proximal end of the shaft and the distal end of the shaft. A proximal surface of the distal end feature of the cable abuts a distal surface portion of the end effector body portion. A method of assembling a surgical instrument including an end effector body and a retaining member includes inserting a distal end feature of a cable within a recess in the end effector body and positioning a retaining member over the recess in the end effector body to retain the distal end feature of the cable within the retaining member.

Surgical devices, systems, and methods are provided for applying monopolar energy and bipolar energy to tissue. In one embodiment, a surgical device is provided with an end effector that has first and second jaws movable between an open position and a closed position, and a conductive member that extends through the end effector. The conductive member has a retracted position in which the conductive member is substantially disposed within the end effector and an extended position in which the conductive member extends at least partially distally beyond the end effector. The conductive member is configured to conduct energy through tissue adjacent thereto at least when the conductive member is in the extended position.

Electromagnetic (EM) tissue ablation device comprising an EM field generator unit, at least two coaxial elongated elements (i.e. an external one and an internal one) and a mechanism for varying the EM field, wherein said internal element is a part of said generator and said mechanism being adapted to vary the EM field for a specific tissue area.

An electro-chemical surgical knife is detailed that in a single instrument provides both a chemically assisted mechanical dissector and an electrical knife. The chemically assisted mechanical dissector: includes a conductive mechanical instrument, a source (7) of a cleavage solution, a pump (8) for feeding the cleavage solution to, a channel (2) for transporting the cleavage solution to an operating location, and a flow controller (8c) for controlling the feeding of the cleavage solution by the pump to an inlet of the channel. The electric knife includes a source of high frequency AC electrical power (5) for feeding AC current through an electric conductor (3) to, an electrode (6) formed by the conductive mechanical instrument and further comprises a second controller (5c) for controlling the feeding of the AC current to the electrode.