An electrosurgical tool includes an electrically powered handpiece with a detachable electrode at one end and a power connection at the other. A mechanism for connecting the detachable electrode to the handpiece includes a keyed electrical connection to power the electrode. The handpiece includes a feedback controller incorporated in the tool to adjust operational characteristics of the electrosurgical tool.

A system includes a switching assembly and a processor. The switching assembly is connected to multiple electrodes that are disposed on an expandable distal end of a catheter, and is configured to switch the electrodes between a position tracking system, an electrophysiological (EP) sensing module and a generator of an ablative power. The processor is configured to control the switching assembly to switch the electrodes.

Ablation systems and methods of the present disclosure are directed toward delivering pulsed radiofrequency (RF) energy to target tissue. The pulsations of the RF energy, combined with cooling at a surface of the target tissue, can advantageously promote local heat transfer in the target tissue to form lesions having dimensions larger than those that can be safely formed in tissue using non-pulsed RF energy under similar conditions.

Ablation systems of the present disclosure facilitate the safe formation of wide and deep lesions. For example, ablation systems of the present disclosure can allow for the flow of irrigation fluid and blood through an expandable ablation electrode, resulting in efficient and effective cooling of the ablation electrode as the ablation electrode delivers energy at a treatment site of the patient. Additionally, or alternatively, ablation systems of the present disclosure can include a deformable ablation electrode and a plurality of sensors that, in cooperation, sense the deformation of the ablation electrode, to provide a robust indication of the extent and direction of contact between the ablation electrode and tissue at a treatment site.

An assembly with a handpiece assembly configured to receive electromagnetic energy and fluid, and to selectively deliver the electromagnetic energy and/or the fluid to a target surface. The handpiece assembly includes a handpiece housing and a plurality of fluid lines extending through the handpiece housing. The plurality of fluid lines can transfer fluid from a proximal end of the handpiece assembly to a distal end of the handpiece assembly. A spray mixer can be positioned at the distal end that is coupled to fluid lines of the plurality of fluid lines. An air input port can be positioned at the proximal end that is configured to be coupled to an auxiliary air hose, and an air delivery channel can be coupled to the air input port, and can supply air to a tip of an exchangeable applicator that can be coupled to the distal end of the handpiece housing.

A system includes a switching assembly and a processor. The switching assembly is connected to multiple electrodes that are disposed on an expandable distal end of a catheter, and is configured to switch the electrodes between a position tracking system, an electrophysiological (EP) sensing module and a generator of an ablative power. The processor is configured to control the switching assembly to switch the electrodes.

The disclosed technology includes a medical probe comprising a tubular shaft having a proximal end and a distal end, the tubular shaft extending along a longitudinal axis. The medical probe further comprises an expandable basket assembly coupled to the distal end of the tubular shaft. The basket assembly includes a plurality of electrodes with each electrode of the plurality of electrodes having a lumen therethrough. The basket assembly further includes a plurality of spines extending along the longitudinal axis and configured to bow radially outward from the longitudinal axis when the expandable basket assembly is transitioned from a collapsed form to an expanded form. Each spine includes a proximal and a distal end and a strut passing through the lumen of an electrode. The strut includes a mechanical retainer disposed on the strut to prevent the electrode from sliding proximally or distally along a length of the spine.

A dental laser comprises a hand piece having a grip region and a treatment tip with an outlet point, arranged at a distal end, for laser light, and further comprises a light source and light conduction means for providing laser light at the outlet point. The laser light has a wavelength of 44520 nm, in particular, 44510 nm and more particularly 4455 nm, and an optical power output is provided at the outlet point in a power range of at least 2 W, advantageously at least 3 W and, in particular, 3.5 W. In another dental laser the laser light has a wavelength of 41010 nm, and an optical power output is provided at the outlet point in a power range of no less than 1 W to no more than 2 W.

In one exemplary mode, a system includes a progressive cavity pump (PCP) comprising a housing, a rotor, a stator, and ports, one port being configured to be connected to an irrigation reservoir, an ablation catheter comprising at least one ablation electrode, at least one irrigation hole, and an irrigation channel having a distal end connected to the irrigation hole(s), and a proximal end configured to be connected to another port of the PCP, a motor comprising a drive shaft which is configured to be connected to the PCP, and drive rotation of, the rotor of the progressive cavity pump, and a controller configured to control a rotatory speed of the motor to control a flow rate of the PCP so as to pump irrigation fluid from the irrigation reservoir into the irrigation channel and out of the irrigation hole(s) of the ablation catheter.

According to various embodiments, systems, devices and methods for modulating targeted nerve fibers (e.g., hepatic neuromodulation) or other tissue are provided. Systems, devices and methods for cooling energy delivery members are also provided. The systems may be configured to access tortuous anatomy of or adjacent hepatic vasculature. The systems may be configured to target nerves surrounding (e.g., within adventitia of or within perivascular space of) an artery or other blood vessel, such as the common hepatic artery.