Embodiments relate to robotic arm assemblies. The robotic arm assembly includes an end-effector assembly. The end-effector assembly includes an instrument assembly. The instrument assembly includes an instrument and instrument driven portion. The elongated body includes an instrument central axis. The instrument driven portion includes a first central axis. The instrument driven portion is secured to a proximal end of the instrument in such a way that, when the instrument driven portion is driven to rotate, the instrument rotates relative to the first central axis. The end-effector assembly includes an instrument drive assembly. The instrument drive assembly includes an instrument drive portion. The instrument drive portion includes a second central axis. The instrument drive portion is configured to drive the instrument driven portion to rotate the distal end of the instrument relative to the first central axis. The second central axis intersects with and orthogonal to the first central axis.

The present disclosure is a catheter assembly and related method that allows laceration of either a surgical valve or transcatheter valve leaflet to facilitate flow to the coronary arteries during valve in valve interventions.

An electrode unit of the invention includes: an electrode including one end and another end, the other end including a free end; and an electrode supporting portion that supports the one end of the electrode. The electrode is disposed in a second plane that is different from a first plane in which the electrode supporting portion is moved to advance or withdraw when the electrode supporting portion is moved to advance or withdraw in a direction along a longitudinal axis of the electrode supporting portion, and the electrode is supported by the electrode supporting portion via a flexed portion projecting from the first plane to the second plane.

A surgical instrument includes a housing, an elongated shaft assembly extending from the housing, and an end effector extending from the elongated shaft assembly. An inner shaft of the assembly defines proximal and distal portions and a longitudinal lumen. The proximal portion inhibits passage of gas while the distal portion permits passage of gas. An intermediate collar is disposed about the inner shaft between the proximal and distal portions. An outer sleeve of the assembly is disposed about the inner shaft and the intermediate collar to define a proximal area therebetween proximally of the intermediate collar and a distal annular area therebetween distally of the intermediate collar. The outer sleeve includes a proximal portion surrounding the proximal annular area and a distal portion surrounding the distal annular area. The proximal portion permits passage of gas while the distal portion inhibits passage of gas.

An apparatus is provided to detect electrical contact between anatomical tissue and a shield conductor: a transformer; an alternating current (AC) reference frequency signal generator to inject a reference frequency signal to a primary winding of the transformer; a reactive impedance coupled in parallel with a secondary winding of the transformer between a first node and a second node; and a phase match detector circuit to detect a phase match between the reference frequency signal and a reflected reference frequency signal that is reflected from the secondary winding to the primary winding.

The present invention relates to an ablation equipment (100) to treat target regions of tissue (41) in organs (44), comprising an ablation catheter (1) and a single power source (4); said ablation catheter (1) comprising: a catheter elongated shaft (13) comprising at least an elongated shaft distal portion (17); said catheter elongated shaft (13) comprising a flexible body (207) to navigate through body vessels (208); said ablation catheter (1) further comprising a shaft ablation assembly (20) disposed at said elongated shaft distal portion (17); said shaft ablation assembly (2) comprising at least a plurality of electrodes (127, 113 or 114) fixedly disposed at said elongated shaft distal portion (17); all electrodes of said at least a plurality (127, 113 or 114) being electrically powered by said single power source (4) through an electric signal (S) to deliver both non-thermal energy for treating the tissue (41) and thermal energy for ablating the tissue (41); wherein said electric signal (S) comprises a sinusoidal wave, and said single power source (4), when requested, changes continuously said electric signal (S) in order to power the said least a plurality of electrodes (127, 113 or 114) to deliver from a non-thermal energy to a thermal energy, and vice versa, or to deliver at the same time a combination of thermal energy and non-thermal energy.

An electrosurgical smoke evacuation pencil includes a handle housing having a proximal end portion and a distal end portion, the handle housing defining a first lumen therethrough. The electrosurgical pencil also includes a nozzle disposed within the first lumen and defining a second lumen, the nozzle being movable relative to and within the handle housing and extending proximally past the proximal end portion of the handle housing. The electrosurgical pencil may further include a swivel connector coupled to the distal end portion of the handle housing, the swivel connector configured to couple to a suction source. The electrosurgical pencil includes a hub assembly securedly disposed within the second lumen, the hub assembly including a conductive tube configured to couple to a source of electrosurgical energy, and an electrode slidably disposed within the conductive tube, the electrode being movable relative to and within the conductive tube.

An electrosurgical lysing device and related methods. In some embodiments, the device may comprise a lysing tip comprising one or more beads. The bead(s) may comprise an at least substantially electrically non-conductive surface and may define, at least in part, both a distally-facing and a proximally-facing recess. At least one electrically conductive lysing member configured to deliver electrosurgical energy may be positioned adjacent to the at least one bead, the at least one lysing member defining at least one lysing segment extending within a recess at least partially defined by the at least one bead.

An end effector of an electrosurgical device may include a first body, a first electrode on the left side of the first body, and a second electrode on the right side of the first body. The first and second electrodes may be configured to receive electrosurgical energy to treat tissue in a target treatment zone. The end effector may also include a fluid aspiration port in fluid communication with a fluid path. The fluid aspiration port may be configured to remove a material from the target treatment zone.

A medical punching/cauterizing device includes a handle having a body, a cap detachably coupled to a front portion of the body, a connection terminal coupled to the body and electrically connected to a power supply means, a conductor provided in the front portion of the body and having one end electrically connected to the connection terminal, and a guide wire provided on a front portion of the handle and having one end electrically connected to the conductor.