A deflectable catheter is disclosed that includes a proximal handle, an elongated catheter shaft extending distally from the proximal handle and including a deflectable distal end portion, a drive mechanism associated with the proximal handle for deflecting the distal end portion of the catheter shaft between a first position where the distal end portion of the catheter shaft is aligned with an axis of the catheter shaft and a second position where the distal end portion of the catheter shaft is deflected angularly away from the axis of the catheter shaft, and indicator means associated with the drive mechanism for providing a visual indication of the position of the drive mechanism, which corresponds to a degree of curved deflection of the deflectable distal end portion of the catheter shaft.

A switch mechanism (12) includes a housing (16, 18) with a fenestration (21), a switch element (22) held in the housing, and a membrane switch held in the fenestration. The membrane switch includes a flexible membrane (20) and a rigid rib (26). The rib is constrained to linear movement by guides (37, 38) in the housing so that contact with the membrane causes the membrane to deform and the rib to translate to actuate the switch element.

Tissue treatment systems include an actuator handle assembly coupled with a clamp assembly having a first jaw mechanism and a second jaw mechanism. A first jaw mechanism includes a first flexible boot, a first flexible ablation member coupled with the first flexible boot, and a first rotatable jawbone disposed within the first flexible boot. A second jaw mechanism comprises a second flexible boot, a second flexible ablation member coupled with the second flexible boot, and a second rotatable jawbone disposed within the second flexible boot.

An integrated cannula/RF electrode for an RF ablation system includes a cannula including a cannula hub and a shaft extending from the cannula hub, wherein the shaft includes a distal portion; an RF electrode including a distal portion, wherein at least a portion of the RF electrode is permanently disposed within the cannula; and a deployment mechanism coupled to the RF electrode and either coupled to the cannula hub or extending from the cannula hub, wherein the deployment mechanism includes an actuator coupled to the RF electrode and is configured to extend the distal portion of the RF electrode out of the distal portion of the shaft of the cannula by actuation of the actuator.

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 housing and a trigger assembly. The trigger assembly includes a trigger including a drive portion and a manipulation portion, a rocker, a linkage, and a slider. The trigger is pivotably coupled to the housing such that the drive and manipulation portions are moved in different directions in response to actuation of the trigger. The drive portion of the trigger is pivotably coupled to the rocker. The linkage is pivotably coupled to the rocker and the housing at opposing end portions thereof. The slider is pivotably coupled to the rocker and operably coupled to the deployable component. Actuation of the manipulation portion of the trigger moves the drive portion of the trigger distally to thereby urge the rocker distally, pivot the linkage about the second end portion thereof, and slide the slider distally to deploy the deployable component distally.

A method of surgery includes determining a target zone of tissue, adjusting settings of a treatment device based on the target zone of tissue, positioning the treatment device adjacent the target zone of tissue, deploying the treatment device such that the treatment device defines a deployed configuration in accordance with the settings, and treating the target zone of tissue using the treatment device. An ablation system includes a housing, an elongated body extending distally from the housing, and a plurality of probes deployable from the elongated body. At least one control is configured to adjust settings associated with at least one probe such that, upon deployment of the plurality of probes, the plurality of probes define a deployed configuration in accordance with the settings.

Prostate treatment using fluid stream to resect prostate tissue, thereby relieving symptoms of conditions such as BPH, prostatitis, and prostatic carcinoma. A device having a fluid delivery element is positioned within a lumen of the urethra within the prostate. A fluid stream is directed outwardly from the fluid delivery element toward a wall of the urethral lumen. The fluid delivery element is moved to scan the fluid stream over the wall to remove a volume of tissue surrounding the lumen. The fluid may be combined with therapeutically active substances or with substances that increase resection efficiency. Fluid force may be adjusted to provide selective tissue resection such that soft tissue is removed while harder tissue is left undamaged. In order to gain a working space within the urethra, another fluid may be introduced to insufflate the urethra in the region of treatment.

A control handle for a steerable catheter allows for precise manipulation of the distal catheter tip in a target organ or vessel using only one hand. The control handle can have a single articulating knob capable of both linear translation along and rotation about the axis of the handle. These functions of the articulating knob actuate both the expansion and retraction of an expandable member, as well as bi-directional deflection of the distal catheter tip. The articulating knob functions with consistency regardless of the orientation of the handle, with ergonomic movements allowing the user to comfortably keep their attention on the procedure's monitoring equipment. These improvements can lead to safe and more rapid procedure times for procedures such as diagnostics and cardiac ablation.

Present disclosure provides a cooling device with safety features and methods for controlling temperature of the cooling device for safe cooling of target surface.