An electrocautery surgical device comprising a battery source and radio-frequency signal generating circuitry electrically coupled to the battery source and operable to deliver power. In an exemplary embodiment, the radio-frequency signal generating circuitry comprises a transformer having a primary winding and a secondary winding wherein the secondary winding is comprised of a first secondary sub-winding and a second secondary sub-winding, at least one switching component electrically coupled to the first and second secondary sub-windings and operable to switch between engaging the first secondary sub-winding and engaging the second secondary sub-winding such that a current induced by the primary winding flows through either the first secondary sub-winding or the second secondary sub-winding, wherein the first and second secondary sub-windings have a different number of turns such that the radio-frequency signal generating circuitry produces a different impedance value depending on which of the first or second secondary sub-windings is engaged.

A surgical instrument comprises an end effector configured to core tissue, a handle operatively coupled to the end effector, wherein the handle comprises a trigger to actuate the end effector, the handle comprising a battery dock, the battery dock comprising a protruding member; and a battery unit attachable to the battery dock, wherein the battery unit is in electrical contact with at least one of the handle and the end effector when attached to the battery dock.

A portable electrosurgical device (ESD) has a housing, a probe connected to the housing and a heating element connected to the probe for destroying human tissue. The heating element is detachable from the probe and/or the probe with heating element can be detachable from the housing. The user can set a drive signal's electrical characteristics, such as operating frequency, duty cycle, peak voltage and the like for a customized drive signal formed in the ESD based on the heating element used. Memory storage allows for storage of inputted data from a keyboard, downloaded reference documents and information off the Internet from an Ethernet connector that can be displayed for reference on a screen of the ESD. Another even more compact ESD is an integral one-piece portable device having a type of pistol hand-held grip, dis-connectable probe, and a rechargeable, removable battery in the handle provides approximately 30, one-minute treatments on a single battery charge.

An electrosurgical device is disclosed. The electrosurgical device includes a handle, a shaft extending distally from the handle, and an end effector coupled to a distal end of the shaft. The end effector comprises a first electrode and a second electrode. The second electrode includes a first position and a second position. The second electrode is configured to move from the first position to the second position when a force is applied to the end effector by a tissue section. The first electrode and the second electrode define a treatment area when the second electrode is in the second position.

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.

Methods and devices for controlling motorized surgical devices are provided. In general, the methods and devices can allow a surgical device to grasp and cut tissue. In some embodiments, the device can include at least one sensor and a motor, and an output of the motor can be configured to be adjusted based at least in part on an output from the at least one sensor. The output of the motor can be configured to provide power for translation of a cutting element along an end effector of the device. Adjusting the motor's output can cause the cutting element to translate through the end effector at different speeds, thereby allowing the cutting element to cut through tissue being grasped by the end effector at different speeds.

The energy treatment instrument includes an end effector performing treatment using treatment energy, and a moving part disposed so as to be movable relative to a housing and moving relative to the housing based on an operation input to move the end effector or an operation input to supply treatment energy to the end effector. The energy treatment instrument includes an energy converter converting kinetic energy due to a movement of the moving part into electric energy and storing the converted electric energy in an electricity storage.

The invention relates to an ablation catheter for treatment of a patient's tissue by delivery of high-voltage pulses comprising a catheter shaft and an ablation portion being arranged at a distal end of the catheter shaft with a plurality of electrodes accommodated along the ablation portion, wherein the ablation portion forms a spiral and comprises a first loop section and a neighboring second loop section, wherein an inner diameter of the first loop section increases towards an inner diameter of the second loop section starting from a first end of the first loop section located opposite the second loop section, wherein the first loop section has a greater stiffness than the second loop section.

A surgical instrument comprises a controller configured to control application of RF or ultrasonic energy at a low level when displacement or intensity of a button is above a first threshold but below a second threshold higher than the first threshold, and control application of RF or ultrasonic energy at a high level when the displacement or intensity exceeds the second threshold. In another aspect, a surgical instrument comprises a first sensor configured to measure a tissue characteristic at a first location, a second sensor configured to measure the tissue characteristic at a second location, and a controller configured to, based at least in part on the measured tissue characteristic at the first location and the second location, control application of RF or ultrasonic energy.

Provided is a system and medical device that includes self diagnosing control switches. The control switch may be slidable within a slot in order to control activation of some function of the medical device. Due to natural wear and tear of movement of a control switch, the distances along the sliding slot that correspond to how much energy is used for the function may need to be adjusted over time in order to reflect the changing physical attributes of the actuator mechanism. The self diagnosing control switches of the present disclosures may be configured to automatically adjust for these thresholds using, for example, Hall effect sensors and magnets. In addition, in some cases, the self diagnosing control switches may be capable of indicating external influences on the controls, as well as predict a time until replacement is needed.