A surgical instrument operable to sever tissue includes a body assembly and a selectively coupleable end effector assembly. The end effector assembly may include a transmission assembly and an end effector. The body assembly includes a trigger and a casing configured to couple with the transmission assembly. An information transmission system transmits instrument information received from a sensor, for example, to a secure server via a secure gateway connected to the instrument. The instrument may be previously tested on a calibration kit to pre-determine and load surgeon-specific settings onto the instrument prior to use.

Apparatus and methods for determining positioning of a energy delivery element include deploying a energy delivery element at a treatment site proximal to a vessel wall; using a multi-region pressure sensing apparatus to sense pressures applied in a plurality of directions about the energy delivery element; and determining an orientation of the energy delivery element based on the pressures measured in the plurality of directions about the energy delivery element.

A surgical end effector may comprise first and second jaw members. The second jaw member may comprise an offset proximal supply electrode that is positioned to contact an opposing member of the first jaw member when the first and second jaw members are in the closed position. The second jaw member may also comprise a distal supply electrode that is positioned distal of the offset proximal electrode and is aligned with a conductive surface of the first jaw member when the first and second jaw members are in the closed position. When the first and second jaw members are in the closed position, the proximal supply electrode may be in contact with the opposing member and the distal supply electrode is not in contact with the conductive surface of the first jaw member.

A surgical instrument assembly comprising a shaft, an actuator positioned within the shaft, an articulation joint, an attachment interface positioned distal to the articulation joint and an end effector removably attachable to and detachable from said articulation joint by the attachment interface is disclosed. The end effector is configured to be articulated relative to the shaft. The end effector comprises a first jaw, a second jaw movable relative to the first jaw, and a firing member configured to move the second jaw relative to the first jaw when the end effector is attached to the attachment interface and control motions are applied to the firing member by the actuator. When the end effector is attached to the articulation joint, the actuator is movable between an engaged position in which the actuator and the firing member are operably engaged and a disengaged position.

A method implemented by a surgical instrument is disclosed. The surgical instrument includes first and second jaws and a flexible circuit including multiple sensors to optimize performance of a radio frequency (RF) device. The flexible circuit includes at least one therapeutic electrode couplable to a source of RF energy, at least two sensing electrodes, and at least one insulative layer. The insulative layer is positioned between the at least one therapeutic electrode and the at least two sensing electrodes. The method includes contacting tissue positioned between the first and second jaws of the surgical instrument with the at least one therapeutic electrode and at the least two sensing electrodes; sensing signals from the at least two sensing electrodes; and controlling RF energy delivered to the at least one therapeutic electrode based on the sensed signals.

Devices, systems, and methods of the present disclosure can overcome physical constraints associated with catheter introduction to facilitate the use of a catheter with a large distal portion as part of a medical procedure benefitting from such a large distal portion, such as, for example, cardiac ablation. More specifically, devices, systems, and methods of the present disclosure can compress an expandable tip of a catheter from an expanded state to a compressed state along a tapered surface of an insertion sleeve for advancement of the expandable tip into vasculature of a patient. The tapered surface of the insertion sleeve can, for example, apply compressive forces at an angle against the advancing expandable tip. As compared to other approaches to the application of compressive force to an expandable tip, compressing the expandable tip using an angled force can reduce the likelihood of unintended deformation of the expandable tip.

An ultrasonic surgical tool system for actuating a handpiece with a tip. The frequency of the drive signal applied to the handpiece drivers is a function of the equivalent of current through the mechanical components of the handpiece and tip and the frequency responsiveness of these components.

Transducer-based systems can be configured to display a graphical representation of a transducer-based device, the graphical representation including graphical elements corresponding to transducers of the transducer-based device, and also including between graphical elements respectively associated with a set of the transducers and respectively associated with a region of space between the transducers of the transducer-based device. Selection of graphical elements and/or between graphical elements can cause activation of the set of transducers associated with the selected elements. Selection of a plurality of graphical elements and/or between graphical elements can cause visual display of a corresponding activation path in the graphical representation. Visual characteristics of graphical elements and between graphical elements can change based on an activation-status of the corresponding transducers. Activation requests for a set of transducers can be denied if it is determined that a transducer in the set of transducers is unacceptable for activation.

A method for treating a target tissue in a patient in need thereof is provided. The method includes the steps of identifying one or more characteristics of one or more cells of a target tissue; calculating a threshold electric field for inducing IRE in the target tissue based on the one or more characteristics; constructing a treatment protocol of one or more pulse parameters, wherein the treatment protocol is capable of inducing IRE in the target tissue; and delivering the treatment protocol to the target tissue. Systems for treatment planning for medical therapies involving administering electrical treatment energy are also provided.

The present disclosure relates to devices, systems and methods for calculating the amount of energy delivered to tissue during an electrosurgical treatment. The present disclosure provides for a power supply that supplies electrosurgical energy to an applicator via a radio frequency (RF) output stage, a memory that stores at least one energy quantification function that determines an amount of energy delivered to patient tissue by the applicator and a controller that controls the power supply based on a selected power setting and determines the amount of energy delivered to the patient tissue based on the energy quantification function and the selected power setting. The controller counts the energy delivered to the patient tissue based on the selected power setting and a duration of activation time of the applicator at the selected power setting and displays the energy delivered in Joules.