A method for forming a resonating structure within a body lumen, the method including advancing a flexible microwave catheter into a body lumen of a patient, the flexible microwave catheter including a radiating portion at the distal end of the flexible microwave catheter, the radiating portion configured to receive microwave energy, and at least one centering device proximate the radiating portion configured to deploy radially outward from the flexible microwave catheter; positioning the radiating portion near tissue of interest; deploying the at least one centering device radially outward from the flexible microwave catheter within the body lumen such that a longitudinal axis of the radiating portion is substantially parallel with and at a fixed distance from a longitudinal axis of the body lumen near the targeted tissue; and delivering microwave energy to the radiating portion such that a circumferentially balanced resonating structure is formed with the body lumen.

A dual cooled radiofrequency ablation probe assembly optimized for treatment of a patient's knee joint includes at least two cooled radiofrequency ablation probes. Each cooled radiofrequency ablation probe includes an electrically and thermally-conductive energy delivery device for delivering electrical or radiofrequency treatment to the patient. The probe assembly further includes cooling fluid tubing for supplying the at least two cooled radiofrequency ablation probes with cooling fluid, and an electrical cable for supplying the at least two cooled radiofrequency ablation probes with electrical energy. The at least two probes are tethered together by the cooling fluid tubing and the electrical cable.

A surgical instrument includes a hand piece having a fixed branch and a displaceable branch for actuating a first tool and/or second tool, a guide device in which a force transmission device is arranged to be displaceable longitudinally and/or rotationally, the force transmission device coupled, on the proximal side, to the fixed branch and/or displaceable branch and coupled, on the distal side, to the first tool and/or second tool, and a connection device on which the guide device can be coupled to the hand piece in an insertable and detachable manner by a coupling simultaneously providing a holding force for holding the guide device in the connection device, a bipolar electrical contact on the distal side of the hand piece for parts of the instrument requiring energy, and degrees of freedom for longitudinal and/or rotational movement of the guide device and/or force transmission device.

A robotic surgical arm can include a puck containing motors to drive an end effector. A tool assembly attached to the puck generates ultrasonic and/or radio frequency energy to apply between the jaws of the end effector. The tool assembly can include modular components such as a modular shaft that can include an ultrasonic transducer, nonvolatile memory, wireless interface, and/or a power source. The power source allows the tool assembly and modular shaft to communicate wirelessly with the robotic arm.

Apparatus, systems, and methods for achieving thermally-induced renal neuromodulation by intravascular access are disclosed herein. One aspect of the present application, for example, is directed to apparatuses, systems, and methods that incorporate a treatment device comprising an elongated shaft. The elongated shaft is sized and configured to deliver a thermal element to a renal artery via an intravascular path. Thermally-induced renal neuromodulation may be achieved via direct and/or via indirect application of thermal energy to heat or cool neural fibers that contribute to renal function, or of vascular structures that feed or perfuse the neural fibers.

A resecting probe includes a shaft assembly having an outer sleeve and an inner sleeve. The outer sleeve has an axial bore and an outer window in a distal side thereof, and the inner sleeve has an axial extraction channel and inner window in a distal side thereof. The inner sleeve is rotationally disposed in the axial bore of the outer sleeve to allow the inner sleeve window to be rotated in and out of alignment with the outer sleeve window, and the shaft assembly forms a flow aperture in a distal portion when the inner cutting window and the outer cutting window are out of alignment. An electrode is carried on the inner sleeve, and a motor drive is coupled to rotate the inner sleeve relative to the outer sleeve. A controller is coupled to the motor drive and controls rotation of the inner sleeve.

A coupling device for an optical waveguide includes an optical waveguide connection for a first optical waveguide. The coupling device includes an optical filter arranged in a beam path between a laser light source and the optical waveguide connection which reflects light of a first wavelength range or a first polarization direction and transmits light of a second wavelength range or a second polarization direction.

An electronic forceps system includes a handle including a pair of pivotable arms distally extending from a proximal end of the handle, at least one arm of the pair of arms having an electrically-conductive arm element connectable to a power source, wherein each arm of the pair of arms comprises a respective pair of arm interfaces, and the electrically-conductive arm element extends to at least one interface of the pair of interfaces. Also provided is a pair of tips, at least one tip of the pair of tips having an electrically-conductive tip element, wherein each tip has a tip interface configured to removably connect to a respective arm interface, each tip has a distal working surface, the electrically-conductive tip element is configured to removably and electrically connect to the electrically-conductive arm element, the electrically-conductive tip element is connected to a heater.

The present disclosure relates generally to the field of cryotherapy. In particular, the present disclosure relates to cryotherapy systems that ensure egress of cryogen gas delivered within a patient's body during cryotherapy procedures and, more particularly, sensors for use with cryotherapy systems that include delivery catheters wherein the systems ensure that egress of cryogen gas from the patient's body is possible whenever the catheter is operating.

Devices, systems and methods are provided for treating conditions of the heart, particularly the occurrence of arrhythmias. The devices, systems and methods deliver therapeutic energy to portions the heart to provide tissue modification, such as to the entrances to the pulmonary veins in the treatment of atrial fibrillation. Generally, the tissue modification systems include a specialized catheter, a high voltage waveform generator and at least one distinct energy delivery algorithm. Other embodiments include conventional ablation catheters and system components to enable use with a high voltage waveform generator. Example catheter designs include a variety of delivery types including focal delivery, “one-shot” delivery and various possible combinations. In some embodiments, energy is delivered in a monopolar fashion. However, it may be appreciated that a variety of other embodiments are also provided.