An apparatus includes a body, a shaft assembly, an end effector, a coupling member, and a seal feature. The shaft assembly extends distally from the body and includes a distal end. The coupling member is disposed at the distal end of the shaft assembly to movably couple the end effector to the shaft assembly. The seal feature is engaged with the coupling member and includes a seal body and a plurality of protrusions. The plurality or protrusions extend from the seal body. Each protrusion of the plurality of protrusions is configured to slidably receive a respective elongate member associated with the end effector therethrough.

Apparatus and systems include an electrosurgical instrument with a unique jaw configuration and gripping surfaces that allow tangential gripping and ablation of tissue in a minimally invasive procedure. The electrosurgical instrument can include a shaft and hinge coupling the shaft to first and second jaws. The first jaw can be an anchor for the second jaw. The jaws can have respective first portions and second portions offset at an angle from the first portions. Each jaw can also include electrodes on their inner surfaces facing the other jaw. Each jaw can also include textured gripping surfaces. The gripping surfaces can be included on at least a portion of the base of each jaw, as well as on at least a portion of the inner surfaces of the jaws.

An ultrasonic forceps comprises a housing, an acoustic assembly, and a tine. The housing joins the acoustic assembly and the tine to the forceps and permits the tine to pivot relative to the acoustic assembly. The acoustic assembly comprises a transducer, a waveguide, and ultrasonic blade, and a waveguide sheath. The transducer is configured to generate ultrasonic vibrations directing the ultrasonic vibrations to the waveguide. The waveguide communicates the ultrasonic vibrations distally to the ultrasonic blade. The ultrasonic blade is configured to vibrate in response to the ultrasonic vibrations generated by the transducer. When the tine is pivoted relative to the transducer, the tine is configured to move toward the ultrasonic blade. Tissue may be grasped between the tine and the ultrasonic blade. The tissue may be denatured when the ultrasonic vibrations generated by the transducer vibrate the ultrasonic blade, thus resulting in the tissue being cut and/or sealed.

A surgical instrument includes a movable handle movable relative a housing to manipulate an end effector assembly, and a rotation assembly. The rotation assembly includes first and second bodies, where one of the bodies is fixedly disposed within a housing and the other body is rotatably disposed within the housing and fixedly disposed about a shaft. An inner contact ring is fixedly disposed on the first body and includes a first electrical connector. An outer contact ring is fixedly disposed on the first body and includes a second electrical connector. First and second spring contacts maintain electrical contact with the inner and outer contact rings. Each of the first and second spring contacts include a substructure that includes a brush holder, an extension, an electrical connector, and a spring that biases the brush towards the inner or outer contact ring to maintain electrical contact.

Disclosed is a medical handpiece having a high frequency heating function. The medical handpiece includes: a needle unit including a needle holder installed outside a distal portion of a handpiece body portion and needles configured to protrude forward from the needle holder; a high-frequency generator configured to apply a high-frequency current to the needle to generate heat when the distal end of the needle is inserted into the epidermal layer; a drug delivery unit installed to deliver a drug to the needle; and a skin expansion member including a guide main body installed to protrude outward of the handpiece body portion and a pair of rotational expansion plates configured to expand a skin in both directions while rotating about a hinge shaft on both sides of a distal portion of the guide main body.

An electrosurgical instrument includes an elongated shaft extending distally from a housing and an actuating mechanism operably coupled to a proximal portion of the elongated shaft and configured to move the elongated shaft. First and second jaw members are coupled to a distal portion of the elongated shaft. The first jaw member is pivotable relative to the second jaw member between open and closed positions. An electrically conductive tissue sealing surface is disposed on each of the jaw members and is adapted to connect to a source of electrosurgical energy. A tissue-dissecting electrode is disposed on a distal end of at least one of the jaw members in spaced relation to the tissue sealing surface and is adapted to connect to a source of electrosurgical energy. An insulator couples the tissue-dissecting electrode to the jaw member and electrically insulates the tissue-dissecting electrode from the jaw member.

A combination medical device for removing and treating tissue in a patient is disclosed. The device includes a reusable handle and a blade selectively connectable to the handle. The blade includes an outer sleeve having a lumen with an inner shaft disposed therein. The inner shaft may be coupled to a motor drive unit disposed within the handle and may rotate so as to mechanically cut tissue as the inner shaft rotates. The outer sleeve includes at least one electrode for electrosurgically treating tissue. The reusable handle includes at least one control switch for controlling a parameter associated with the rotation of the inner shaft. The blade also may include a switch assembly in electrical communication with the at least one electrode, the switch assembly including attachment means for selective attachment of the switch assembly to the reusable handle.

A medical probe includes a shaft for insertion into a cavity of a patient body, and a distal-end assembly. The distal-end assembly is coupled to a distal end of the shaft and includes a hollow tube having (i) a first opening, located at a first section along a longitudinal axis of the hollow tube, and having a first size that limits bending of the first section by a first local radius of curvature (LROC), and (ii) a second opening, located at a second different section along the longitudinal axis of the hollow tube, and having a second different size that limits bending of the second section by a second different LROC.

A forceps includes an instrument housing, an elongated shaft assembly extending distally from the instrument housing, and a rotation knob assembly. The rotation knob assembly is supported in the instrument housing and includes a rotation knob and an inner housing. The rotation knob is coupled to the shaft assembly and positioned to rotate about the inner housing to rotate the elongated shaft assembly relative to the instrument housing. The inner housing is coupled to the instrument housing and supports electrical contacts configured to transmit electrical energy through the rotation knob assembly.

The disclosed apparatus, systems and methods relate to an endoscopic devices configured to house a telescope and having a rotating tube configured for the application of suction or laser excision. A flexion cartridge can be provided that allows for the flexion of a laser for positioning in the surgical theater. The rotating tube is configured to rotate the laser around the scope tube.