An endoscopic device for biportal endoscopic spinal surgery is proposed. The device includes: a guide tube as a hollow tubular member extending in a longitudinal direction and having a front end thereof reaching a target site in a patient's body when being used, the guide tube accommodating a probe of an endoscope inserted therein; a saline solution guide part mounted on a rear end of the guide tube and guiding a saline solution injected from an outside to an inside of the guide tube; and an adapter part positioned at the rear end of the guide tube and guiding the probe of the endoscope to use to the guide tube.

A method of operating an electrosurgical apparatus for coagulating tissue comprises inserting the electrosurgical instrument into an endoscope, and activating a source to supply ionisable gas to the electrosurgical instrument at a flow rate of less than a predetermined threshold flow rate while the electrosurgical instrument is being inserted into the endoscope. Once the electrosurgical instrument has been fully inserted into the endoscope, the source is activated to supply ionisable gas to the electrosurgical instrument at a flow rate of greater than the predetermined threshold flow rate. Finally, high frequency energy is supplied from an electrosurgical generator to the electrosurgical instrument, in order to ionise the ionisable gas flowing to the electrosurgical instrument.

A device for treatment of a tumor comprises a treatment object for placement in or around the tumor. The treatment object has a heating surface which is placed against tumor tissue and which achieves a controlled treatment temperature that is higher than a patient body temperature. An energy source is external to the treatment object and provides energy to reach the treatment temperature. The energy source may be contactless.

Disclosed is a method of unilateral biportal endoscopy and a surgical instrument set used in the same. More particularly, the present invention relates to a method of unilateral biportal endoscopy which separately secures a working portal for surgical instruments and an endoscopic portal for an endoscope, thereby providing a more accurate spinal surgery, and to a surgical instrument set which can be effectively applied to the method.

Treatment device having vibration source, transmission rod, and detachable tip is equipped with ultrasonic transducers. Ultrasonic vibrations transmitted along the transmission rod to the detachable tip cause a treatment end of the tip, such as a blade, to vibrate at ultrasonic frequencies to cut and/or seal tissues. The detachable tip is connected at a location other than the vibration node or the antinode position. The detachable tip endures increased stresses associated with this location by decreasing the mass and sectional area relative to the increasing stress levels. The detachable tip connects to the transmission rod using a transmission surface and a biasing member, such as a leaf spring, that engages a detent located in the housing at the distal end of the transmission rod. Biased contact between the transmission surface and contact surface transmits both ultrasonic vibrations and high-frequency currents to the treatment edge of the detachable tip.

An end effector assembly for an electrosurgical device includes first and second jaw members movable between spaced-apart and approximated positions. The jaw members include tissue-contacting surfaces that define a tissue grasping area. One of the jaw members includes an electrically-insulating body, an interior electrode, and an exterior electrode. The interior electrode is positioned interiorly of outer bounds of the tissue grasping area. A portion of the interior electrode forms part of the tissue-contacting surface. The exterior electrode is positioned exteriorly of the outer bounds of the tissue grasping area. At least one portion of the exterior electrode: extends along the outer back surface of the body, is disposed within the body, and is positioned adjacent the outer bounds of the tissue grasping area. The interior and exterior electrodes are configured to conduct energy through tissue grasped within the tissue grasping area to seal tissue.

A method is disclosed. The method includes delivering staples from a surgical staple cartridge of a surgical instrument to a first tissue during a first procedure; removing the surgical staple cartridge from the surgical instrument; and delivering radio-frequency energy from a radio-frequency cartridge of the surgical instrument to a second tissue during a second procedure.

A medical device includes a shaft including a lumen configured to direct a flow of fluid through the shaft and an electrode. A proximal end of the electrode and a distal end of the shaft form a coupling configured to releasably couple the proximal end of the electrode with the distal end of the shaft. When the proximal end of the electrode is coupled to the distal end of the shaft, fluid delivered through the lumen is emitted from the electrode.

An arthroscopy system includes both a motorized handpiece and a detachable probe. The motorized handpiece includes a rotating driver which is configured to engage a rotatable drive coupling within a hub of the probe. The probe has a shaft with an articulating distal region, and the rotatable drive coupling is configured to convert the rotary motion of the rotating driver to an articulating motion within the articulating region of the probe.

Tissue modification instruments. In some embodiments, the instrument may comprise a shaft extending along an axis. A tissue treatment tip may be positioned at a distal end of the shaft. The tissue treatment tip may comprise one or more energy delivery elements configured to deliver tissue-modification energy. The tissue treatment tip may comprise a non-branching tip that extends away from the axis to define a tissue treatment region that is wider than a width of the shaft. The tissue treatment tip may comprise a terminal end, which may be positioned at the distal end of the instrument in some embodiments or may be positioned proximal of the distal end of the instrument.