Disclosed is a catheter, especially a catheter for denervation, having an improved head structure and its manufacturing method, which may have a small design, allow convenient production and ensure excellent reproduction. The catheter includes a cylinder member having a hollow formed therein, at least one electrode mounted to the cylinder member to generate heat, and a power supply wire printed on the cylinder member and connected to the electrode to give a power supply path for the electrode.

The present disclosure pertains to devices and methods for diagnosis and treatment of biological tissue in which the tissue is accessed by a catheter through a working channel of an endoscope and in which the degree of extension of a distal tip of the catheter beyond a distal tip of the endoscope is controlled.

To provide a chemical ablation device that enables simple performance of chemical ablation treatment including pre- and post-treatment potential measurements. A chemical ablation device according to the present invention includes an electrode-equipped guidewire (30) with which intracardiac potential is measurable, an over-the-wire balloon catheter (40) having a guidewire lumen (415) into which the electrode-equipped guidewire (30) is to be inserted, a Y-shaped connector (50) connected to a proximal side of the balloon catheter (40) and including a guidewire port (51) and an expansion port (53), and a hemostasis valve (60) connected to the guidewire port (51) of the Y-shaped connector (50) and including a side-infusion tube (65) for supplying ethanol to the guidewire lumen (415) of the balloon catheter (40). The ethanol supplied to the guidewire lumen (415) of the balloon catheter (40) is ejected from an opening of a distal tip (47).

A handheld electrosurgical instrument includes a handpiece (2) and an electrode assembly (3), the electrode assembly including one or more electrodes (12), (13) and a connector (8), (9) by which the electrode assembly (3) is capable of being attached and detached with respect to the handpiece (2). The handpiece includes a battery (4), an RF oscillator circuit (5) for generating a radio frequency output, and switching means (7) operable by a user of the electrosurgical instrument. A control circuit is provided (6) for controlling the RF output, the control circuit (6) being capable of receiving signals from the switching means (7) and causing one or more RF outputs to be supplied to the electrode assembly (3) in response thereto. The electrode assembly (3) includes a component (14), (21) capable of modifying the RF output reaching the one or more electrodes (12), (13) to produce a desired RF output at the one or more electrodes.

A cordless, battery powered lighting device is disclosed which is configured to be removably installed on a distal end portion of a handheld electrosurgical instrument, and once the lighting device is installed on the distal end portion of the instrument, light automatically projects from the lighting device along the longitudinal axis of the surgical instrument.

A single-use laser probe with reusable optic fiber fixtures may include a transitory connector having a transitory connector distal end and a transitory connector proximal end; a tube having a tube distal end and a tube proximal end; and an optic fiber having an optic fiber distal end and an optic fiber proximal end. The optic fiber may be disposed in the transitory connector wherein the optic fiber proximal end extends a distance from the transitory connector distal end. The optic fiber may be disposed in the tube wherein the optic fiber distal end is coplanar with the tube distal end. The transitory connector may be configured to interface with a reusable optic fiber fixture.

A surgical instrument includes a housing, first, second, and third actuators operably coupled to the housing, an at least partially semi-rigid shaft extending distally from the housing, an end effector assembly disposed at a distal end of the shaft, and first, second, and third bars extending through the shaft in non-coaxial arrangement. The first bar is operably coupled between the first actuator and the end effector assembly such that actuation thereof effects manipulation of the end effector assembly. The second bar is operably coupled between the second actuator and a first deployable component such that actuation thereof effects deployment of the first deployable component relative to the end effector assembly. The third bar is operably coupled between the third actuator and a second deployable component such that actuation thereof effects deployment of the second deployable component relative to the end effector assembly.

An electrosurgical instrument for applying to biological tissue RF electromagnetic energy and/or microwave frequency EM energy, wherein the instrument tip has a protective hull with a smoothly contoured convex undersurface facing away from a planar body, and wherein the planar body has a tapering distal edge, and wherein an underside of the planar body extends beyond the protective hull at the tapering distal edge. Also disclosed herein is an interface joint for integrating into a single cable assembly all of (i) a fluid feed, (ii) a needle movement mechanism, and (iii) an energy feed (e.g. a coaxial cable), and a torque transfer device for permitting controlled rotation of the cable assembly within the instrument channel of an endoscope. The interface joint and torque transfer device may be integrated as a single component.

An instrument capable of being repeatedly sterilized. The instrument has handle pieces that are configured as a housing. The housing includes housing shells that are joined to one another at butt joints without a gap. The interior of the butt joints may be completely filled with a casting compound.

A surgical instrument includes a body extending along a longitudinal axis between opposite proximal and distal end surfaces. The distal end surface includes a first cavity and a second cavity. The first cavity includes a first light bulb disposed therein. The second cavity includes a second light bulb disposed therein. A shaft includes opposite proximal and distal ends. The proximal end is coupled to the body. A blade is coupled to the distal end. The first light bulb is an ultraviolet (UV) light bulb and the second light bulb is configured to emit visible light. Systems and methods of use are disclosed.