Abstract: A surgical instrument includes a housing having a rounded barrel with a distal end and proximal end configured to seat within a palm of a user. A shaft extends from the distal end of the barrel and supports an end effector at a distal end thereof including first and second jaw members. A rotating assembly is disposed on the barrel and is actuatable to rotate the jaw members. A jaw actuation assembly is disposed on the barrel and is actuatable to move the jaw members between open and closed positions. An energy activation assembly is disposed on the barrel and is actuatable to supply electrosurgical energy to the jaw members. A knife actuation assembly is disposed on the barrel and is actuatable to cut tissue disposed between the jaw members.

Abstract: The electrosurgical systems and corresponding methods of the present disclosure involve an electrosurgical generator, sensing circuitry, and a controller. The electrosurgical generator includes a radio frequency (RF) output stage that supplies power to tissue. The sensing circuitry measures impedance of tissue. The controller controls the power supplied from the RF output stage to track a nonlinear power curve until the power supplied from the RF output stage has reached a predetermined peak power of the nonlinear power curve. The controller further determines whether a tissue reaction has occurred based on impedance measured by the sensing circuitry and controls the power supplied from the RF output stage during a cooling phase if the controller determines that a tissue reaction has occurred. The controller may further control the power supplied from the RF output stage to track a linear power curve.

Abstract: A cleaning fixture for a surgical instrument includes a handle receiving portion configured to receive a housing of a surgical instrument, a shaft receiving portion configured to receive a shaft and an end effector assembly of the surgical instrument, and a knife actuation assembly movably coupled to the handle receiving portion or the shaft receiving portion. The shaft receiving portion extends distally of the handle receiving portion. The knife actuation assembly is configured to selectively actuate a knife trigger assembly of the surgical instrument to advance a knife of the surgical instrument between jaw members of the end effector assembly thereof.

Abstract: A surgical instrument includes a housing, a shaft extending therefrom, an end effector assembly supported by the shaft, a movable handle, and a drive assembly. The drive assembly includes a translatable drive member for actuating the end effector assembly, and a torsion spring including first and second legs. The first leg is configured to translate through the housing in response to movement of the movable handle relative to the housing. The second leg is configured to translate through the housing in cooperation with the first leg to move the drive member longitudinally when a force acting on the drive member is less than a threshold force, and to remain in fixed position, thereby tensioning the torsion spring and retaining the drive member in fixed position when the force acting on the drive member is equal to or exceeds the threshold force.

Abstract: A surgical instrument includes a housing, a shaft extending therefrom, an end effector assembly supported by the shaft, a movable handle, and a drive assembly. The drive assembly includes a translatable drive member for actuating the end effector assembly, and a torsion spring including first and second legs. The first leg is configured to translate through the housing in response to movement of the movable handle relative to the housing. The second leg is configured to translate through the housing in cooperation with the first leg to move the drive member longitudinally when a force acting on the drive member is less than a threshold force, and to remain in fixed position, thereby tensioning the torsion spring and retaining the drive member in fixed position when the force acting on the drive member is equal to or exceeds the threshold force.

Abstract: A surgical instrument includes a housing having a barrel with distal and proximal end portions. The barrel includes a handle depending from a lower end thereof and a concave portion defined within and extending along an upper surface thereof from the proximal end portion of the barrel to the distal end portion of the barrel. A shaft extends from the distal end portion of the housing and supports an end effector assembly at a distal end thereof configured to treat tissue. The concave portion is configured to enhance visibility of the end effector assembly during tissue treatment.

Abstract: An endoscopic bipolar forceps includes a housing having a shaft extending therefrom including an end effector assembly disposed at a distal end thereof having jaw members. A movable handle is pivotable relative to the housing from an initial position wherein the jaw members are spaced relative to one another to a compressed position wherein the jaw members are closed about tissue. A trigger assembly is pivotably coupled to the movable handle and includes a trigger operably coupled to a knife assembly having a knife, a knife drive bar and a cam pin. The trigger includes an elongated slot defined therein configured to house the cam pin for translation therein. Upon actuation of the movable handle, the trigger moves in unison with the movable handle to the compressed position and the cam pin rides within the elongated slot maintaining consistent angle between the movable handle and the trigger during movement thereof.

Abstract: A surgical instrument includes a housing, a shaft extending therefrom, an end effector assembly supported by the shaft, a movable handle, and a drive assembly. The drive assembly includes a translatable drive member for actuating the end effector assembly, and a torsion spring including first and second legs. The first leg is configured to translate through the housing in response to movement of the movable handle relative to the housing. The second leg is configured to translate through the housing in cooperation with the first leg to move the drive member longitudinally when a force acting on the drive member is less than a threshold force, and to remain in fixed position, thereby tensioning the torsion spring and retaining the drive member in fixed position when the force acting on the drive member is equal to or exceeds the threshold force.

Abstract: The electrosurgical systems and corresponding methods of the present disclosure involve an electrosurgical generator, sensing circuitry, and a controller. The electrosurgical generator includes a radio frequency (RF) output stage that supplies power to tissue. The sensing circuitry measures impedance of tissue. The controller controls the power supplied from the RF output stage to track a nonlinear power curve until the power supplied from the RF output stage has reached a predetermined peak power of the nonlinear power curve. The controller further determines whether a tissue reaction has occurred based on impedance measured by the sensing circuitry and controls the power supplied from the RF output stage during a cooling phase if the controller determines that a tissue reaction has occurred. The controller may further control the power supplied from the RF output stage to track a linear power curve.

Abstract: A surgical instrument includes a housing having a movable handle operably coupled to the housing and movable relative thereto between an initial position and a compressed position. A trigger is operably coupled to the housing within a slot defined therein and movable relative to the housing and the movable handle between an un-actuated position and an actuated position. A flange is disposed on the trigger and configured to extend distally therefrom. The flange is dimensioned to cover the slot when the trigger is moved between the un-actuated and actuated positions to avoid creating a potential pinch point between the trigger and the slot.

Abstract: A surgical instrument includes an elongated shaft having a distal portion and a proximal portion coupled to a housing. An inner shaft member extends at least partially through the elongated shaft and is selectively movable in a longitudinal direction. An end effector is supported by the distal portion of the elongated shaft. The end effector includes upper and lower jaw members pivotally coupled to the distal portion of the elongated shaft about a pivot axis and including a pair of laterally spaced flanges. The pairs of flanges of the jaw members are arranged in an offset configuration such that one flange of the upper jaw member is positioned on a laterally exterior side of a corresponding flange of the lower jaw member, and the other flange of the upper jaw member is positioned on a laterally interior side of the other flange of the lower jaw member.

Abstract: A surgical instrument includes a housing having a barrel defining an axis and a fixed handle extending from the barrel. The barrel includes at least one elongated indentation and the fixed handle defines a waist. A shaft extends from the barrel along the axis and couple to an end effector at a distal end thereof. A movable handle coupled to the housing is configured to manipulate the end effector. The movable handle includes a proximal leg, a distal tail, an arcuate segment defining a finger-retaining area, and a proximal foot. A deployable member is slidably disposed within the shaft. A trigger coupled to the housing is configured to deploy the deployable member. The trigger defines a saddle portion. The housing, movable handle, and trigger are configured to facilitate operable grasping by a hand of a user in at least first and second different grasping configurations.

Abstract: The electrosurgical systems and corresponding methods of the present disclosure involve an electrosurgical generator, sensing circuitry, and a controller. The electrosurgical generator includes a radio frequency (RF) output stage that supplies power to tissue. The sensing circuitry measures impedance of tissue. The controller controls the power supplied from the RF output stage to track a nonlinear power curve until the power supplied from the RF output stage has reached a predetermined peak power of the nonlinear power curve. The controller further determines whether a tissue reaction has occurred based on impedance measured by the sensing circuitry and controls the power supplied from the RF output stage during a cooling phase if the controller determines that a tissue reaction has occurred. The controller may further control the power supplied from the RF output stage to track a linear power curve.

Abstract: A surgical instrument includes an elongated shaft having a distal portion and a proximal portion coupled to a housing. An inner shaft member extends at least partially through the elongated shaft and is selectively movable in a longitudinal direction. An end effector is supported by the distal portion of the elongated shaft. The end effector includes upper and lower jaw members pivotally coupled to the distal portion of the elongated shaft about a pivot axis and including a pair of laterally spaced flanges. The pairs of flanges of the jaw members are arranged in an offset configuration such that one flange of the upper jaw member is positioned on a laterally exterior side of a corresponding flange of the lower jaw member, and the other flange of the upper jaw member is positioned on a laterally interior side of the other flange of the lower jaw member.

Abstract: A cleaning fixture for a surgical instrument includes a handle receiving portion configured to receive a housing of a surgical instrument, a shaft receiving portion configured to receive a shaft and an end effector assembly of the surgical instrument, and a knife actuation assembly movably coupled to the handle receiving portion or the shaft receiving portion. The shaft receiving portion extends distally of the handle receiving portion. The knife actuation assembly is configured to selectively actuate a knife trigger assembly of the surgical instrument to advance a knife of the surgical instrument between jaw members of the end effector assembly thereof.

Abstract: A method of disassembling a surgical instrument for reprocessing, includes accessing an interior housing of a surgical instrument to expose a slider assembly, an elongated outer shaft including a drive plate and knife assembly extending therethrough, and a torsion spring of the surgical instrument. The method further includes grasping an upper leg of the torsion spring to disengage the upper leg from a slot defined within the drive plate, disengaging the drive plate from the slider assembly, and removing the torsion spring from the slider assembly.

Abstract: A surgical instrument is provided. The surgical instrument includes a housing. A movable handle is coupled to the housing and is configured to approximate a pair of jaw members toward and away from one another. A latch mechanism operably couples to the movable handle and includes one or more mechanical interfaces configured to selectively engage a corresponding mechanical interface disposed within the housing to lock and unlock the jaw members in an approximated configuration. When the movable handle is in a jammed position, the mechanical interface(s) of the latch mechanism is/are configured to deform and separate from the corresponding mechanical interface disposed within the housing when the movable handle is moved from the jammed position.

Abstract: A method for manufacturing an end effector assembly includes providing first and second jaw members moveable relative to one another about a pivot between a first, spaced-apart position and a second, approximated position. One of the first and second jaw members includes a cavity defined therein and the other of the first and second jaw members includes a stop member configured to be inserted into the cavity. A gap-setting gauge is grasped between the first and second jaw members to define a gap-distance between the jaw members equivalent to a thickness of the gap-setting gauge. The first and second jaw members are set such that the jaw members are prevented from approximation beyond the gap-distance.

Abstract: An electrosurgical instrument includes a housing including an elongated shaft. A stationary actuation member is axially disposed within the elongated shaft and includes a cam pin. An actuating mechanism is operably coupled to the elongated shaft and is moveable relative to the housing to selectively cause movement of the elongated shaft. An end effector includes a pair of opposing first and second jaw members operably coupled about a common pivot. One or both of the jaw members includes a camming slot configured to engage the cam pin. Each jaw member includes an electrically conductive tissue sealing surface adapted to connect to a source of electrosurgical energy. A knife blade is supported in the elongated shaft and moveable in a longitudinal direction to cut tissue disposed between the jaw members. A wire retention unit is supported within the housing and includes a plurality of wire clasps and a plurality of guide ribs configured to define at least one wire path.