A method and apparatus for treating an intraosseous nerve. The method includes positioning a hollow shaft through the cortical shell of a vertebral body and into a cancellous bone region of the vertebral body. The hollow shaft includes an annular wall having a longitudinal bore therein, a proximal portion and a distal portion, and a first window extending transversely through the annular wall. An electrosurgical probe is advanced within the longitudinal bore from the proximal portion toward the distal portion. The electrosurgical probe includes a first treatment element at a distal end of the probe, wherein the first treatment element being in electrical connection with a power supply. The first treatment element is slidably disposed within the longitudinal bore so that the first treatment element is advanced radially outward from the window and shaft to affect treatment of the intraosseous nerve within the cancellous bone region.

Object

Provided is a power supply device and the like capable of improving convenience.

Solving means

A power supply device according to an embodiment of the present disclosure include a power supply unit that supplies power to an electromedical device, a first impedance control unit disposed on a path of a circulation path of the power between the power supply unit and the electromedical device, excluding an input path for inputting an electrical signal obtained in the electromedical device to another device, and a second impedance control unit disposed on the input path of a path between the power supply unit and the other device. An impedance state of each of the first and second impedance control units transitions in accordance with a supply state of the power to the electromedical device.

A device for performing a surgical procedure includes an elongated shaft extending between a proximal end and a distal end. The shaft includes an outer surface and an inner surface. An expandable member is disposed at the distal end of the shaft. The expandable member is configured to receive inflation material. At least one electrode is disposed with the inflatable member. Methods of use are disclosed.

A fluid stream is directed toward tissue to generate a plurality of shedding clouds. The fluid stream can be scanned such that the plurality of shedding clouds arrive a different overlapping locations. Each of the plurality of shedding clouds can remove a portion of the tissue. In many embodiments, an apparatus to ablate tissue comprises a source of pressurized fluid, and a nozzle coupled to the source of pressurized fluid to release a fluid stream, in which the fluid stream generates a plurality of shedding clouds.

Methods of assembling a manifold for a medical waste collection system. A flapper valve unit is secured to a head of a cap. A filter element is positioned within a shell. Basket hands of the filter element are fitted between first pairs of ribs of the cap skirt. Fingers of the shell are fitted between second pairs of ribs of the cap skirt. The cap is secured to the shell to cover an open distal end of the shell. A drip stop is secured to the proximal end base of the shell to seat within the outlet opening. Ears may be fitted through holes defined by the flapper valve unit and cap holes defined by the cap so as to snap lock to the head of the cap. The hub of the flapper valve unit may be compressed with the ears snap locked to the head of the cap.

An electrosurgical pencil includes a housing having proximal and distal ends, the proximal end adapted to connect to an energy source and the distal end adapted to receive an end effector assembly therein, the end effector assembly defining a surface area along a length thereof. An activation switch is operably associated with the housing and is configured to deliver electrosurgical energy to the end effector assembly upon actuation thereof. An air control valve is operatively coupled to the activation switch and is configured to simultaneously deliver a gas from a gas source to the surface area around the end effector upon actuation of the activation switch. One or more vents are defined in the distal end of the housing and are configured to direct the gas towards the surface area of the end effector.

A push-pull generator provided for supply of a medical instrument includes at least one capacitive branch connected to ground, preferably in a switchable configuration, in parallel to at least one of its two transistors. Such a capacitive switchable branch can consist of a series connection of one capacitor and one switch. Thereby one of the two half waves of the output voltage of generator can be specifically influenced and the other one of the two half waves can be left largely uninfluenced. If switchable branches comprising capacitors are connected in parallel to both transistors, both half waves of the output voltage of the generator can be influenced independently from one another. This arrangement allows the specific influence of half oscillations of a push-pull generator that is apart therefrom symmetric, whereby the application spectrum for supply of medical instruments with treatment current is enlarged.

A surgical instrument is configured to consist of two separable parts. The first part includes a disposable end effector unit, including an electrosurgical end effector and mechanical drive componentry. The second part includes a reusable electronics unit, containing the RF electronic circuitry of the instrument. A user-releasable complementary interface is provided on each part, allowing the parts to be connected in use. Providing a division of components in this manner improves the sterility of the device, providing easier cleaning of the reusable part of the instrument.

An electrosurgical instrument end effector comprises a rotary shaver arrangement, and an active electrode for supplying radio-frequency (RF) power to a surgical site. The rotary shaver arrangement comprises a rotatable shaver blade, and a stator that partially surrounds the rotatable shaver blade. At least part of the stator is electrically non-conductive.

A probe for ablating tissue comprises an electrosurgical working end configured to provide a first plasma about a first surface location and a second plasma about a second surface location, the first plasma having first ablation parameters and the second plasma having second ablation parameters. The probe has a working end with a thickness below 3 mm and produces a low temperature plasma.