A forceps includes an end effector assembly, a handle assembly, a first switch assembly, and a second switch assembly. The end effector includes first and second jaw members, at least one of the jaw members movable relative to the other between a spaced-apart position, a first approximated position and a second approximated position, at least one of the jaw members adapted to connect to a source of energy. The handle assembly includes a movable handle operably coupled to the end effector, and is movable between an initial stage, a first actuated stage, and a second actuated stage. The first switch assembly is activatable to supply a first energy to the end effector to seal tissue grasped, and the second switch assembly is activatable to supply a second energy to the end effector to cut tissue grasped.

The present disclosure provides electroporation systems and methods of preconditioning tissue for electroporation therapy. An electroporation generator includes an electroporation circuit, a preconditioning circuit, and a controller. The electroporation circuit is configured to be coupled to a catheter for delivering the electroporation therapy to target tissue of the patient. The electroporation circuit is further configured to transmit an electroporation signal through the catheter. The preconditioning circuit is configured to be coupled to a preconditioning electrode for stimulating skeletal muscle tissue of the patient. The preconditioning circuit is further configured to transmit a preconditioning signal to the preconditioning electrode. The controller is coupled to the electroporation circuit and the preconditioning circuit, and is configured to synchronize transmissions of the electroporation signal and the preconditioning signal such that the preconditioning signal is transmitted prior to transmission of the electroporation signal.

A medical system includes an insertion device including a handle and a delivery portion, a laser fiber, a conductive wire, and a lock. The laser fiber extends through the insertion device and is coupled to a laser slider to control a position of the laser fiber relative to a distal end of the delivery portion. The conductive wire extends through the insertion device and is coupled to a wire slider to control a position of the laser fiber relative to a distal end of the delivery portion. The lock is positioned within the handle and is movable in order to selectively lock either the movement of the laser slider or lock the movement of the wire slider.

An electrosurgical device is adapted for use through a port and within a body cavity. The device includes a gas supply supplying gas to a distal tip and a valve to regular such supply, and an electric supply for supplying electricity to the distal tip. A pressure relief system is provided to regulate an outflow of gas from within the body cavity to prevent exceeding a predetermined pressure. The inflow of the gas through the valve and outflow of gas through the pressure relief system may occur simultaneously.

A surgical instrument includes a housing having an elongated shaft with jaw members at a distal end thereof configured to treat tissue upon electrical activation thereof. A first handle is movable relative to the housing to move the jaw members relative to one another to grasp tissue therebetween. A switch is disposed on the housing and configured for activation by the first handle when fully actuated. A slider is disposed in the first handle and is movable between a first position configured to align a switch activation element on the first handle with the switch to activate the jaw members upon full actuation of the first handle and a second position wherein the switch activation element is misaligned with the switch such that full actuation of the first handle does not activate the jaw members.

An electrosurgical forceps includes a housing having a shaft affixed thereto, the shaft including jaw members at a distal end thereof. The forceps also includes a switch assembly that includes a supporting member, a flexible membrane circuit having snap dome switch contacts operably fixed thereto, and ergonomically-contoured keytops. The switch assembly provides at least one monopolar activation switch, and a bipolar activation switch. The forceps also include a drive mechanism which causes the jaw members to move relative to one another for manipulating tissue. A monopolar safety switch is incorporated into the switch assembly which cooperates with the drive mechanism to inhibit the monopolar activation switch when the jaw members are in an open position.

A method for constructing a modular surgical system is disclosed. The method comprises providing a header module comprising a first power backplane segment, providing a surgical module comprising a second power backplane segment, assembling the header module and the surgical module to electrically couple the first power backplane segment and the second power backplane segment to each other to form a power backplane, and applying power to the surgical module through the power backplane.

A surgical instrument has an ultrasonic blade that connects to a distal end of an ultrasonic waveguide. A clamp arm assembly is moveable from an opened position for receiving a tissue, toward a closed position for clamping the tissue. A clamp arm actuator connected to the clamp arm assembly directs the clamp arm assembly from the opened position toward the closed position. An outer sheath surrounds at least a portion of the ultrasonic waveguide. The outer sheath includes a cover removably received against a sheath body, and a sheath securement feature able to detachably couple the cover to the sheath body such that the cover can be detached from the sheath body for accessing the ultrasonic waveguide within the outer sheath.

A treatment system includes an energy treatment tool and a power supply device. The energy treatment tool includes respective first and second grasps configured to be coupled with one another and are capable of pivoting with respect to one another so as to grip a treatment target therebetween. A plurality of bipolar electrodes is attached to the respective first and second grasps. The plurality of bipolar electrodes receives a high-frequency current to flow through the treatment target so as to develop a first temperature distribution in the treatment target. A treatment energy source is configured to be coupled to one of the respective first and second grasps and receives electric energy to generate treatment energy different from the high-frequency current and to apply the generated treatment energy to the treatment target so as to develop a second temperature distribution in the treatment target.

A power supply device for a high frequency treatment instrument includes an active side detection circuit that acquires a first signal output from a treatment instrument-connecting terminal to the treatment instrument and a second signal returned from the treatment instrument to the treatment instrument-connecting terminal, a passive side detection circuit that acquires a third signal output from the treatment instrument-connecting terminal to the treatment instrument and passing through a return electrode to a return electrode-connecting terminal, and a processor that calculates a return loss as the second signal to the first signal and a first insertion loss as the third signal to the first signal and determines an abnormality occurrence location based thereon.