A forceps having a first jaw and a second jaw, where at least one of the first and second jaws is capable of moving between an open position and a closed positions. The forceps including an inner shaft located within an outer shaft and extending along the longitudinal axis, and a drive bar coupled to and extending distally from the inner shaft. The drive bar including a pair of drive bar struts extending from a distal portion of the inner shaft and positioned laterally inward of at least one of first and second set of flanges of the first and second jaws. A drive pin is securable to the pair of drive bar struts and the drive bar is translatable within the outer shaft to translate the drive pin to move the first jaw and/or the second jaw between open and closed positions.

An electrosurgical generator includes: a power supply configured to output a DC waveform; an inverter coupled to the power supply, the inverter including a plurality of switching elements; and a controller coupled to the inverter and configured to generate a switching angle waveform including a plurality of switching pulses. The controller is further configured to at least one of select or calculate the plurality of switching pulses to activate the plurality of switching elements to generate a radio frequency waveform based on the DC waveform and to minimize harmonics of the radio frequency waveform.

Adapter assemblies are provided for selectively interconnecting a surgical end effector that is configured to perform at least a pair of functions and a surgical device that is configured to actuate the end effector, wherein the end effector includes a first axially translatable drive member and a second axially translatable drive member, and wherein the surgical device includes a first rotatable drive shaft and a second rotatable drive shaft.

A handle assembly for use in conjunction with a surgical cutting device is provided. The handle assembly can generally include two, detachable pieces or housings. The first housing can include electrical and mechanical components for driving a cutting assembly, such as a motor, while the second housing can include a fluid flow path that allows fluid to flow from the surgical site to a location outside of the cutting device. At least a portion of the fluid flow path can extend substantially adjacent to at least a portion of one or more components used to drive the cutting assembly to help manage the heat output of the components. The fluid flow path allows the fluid to exit the device without coming into contact with components like a motor, while also helping to cool the handle assembly. Systems and methods for cutting tissue are also provided.

A surgical instrument having a long shaft comprises, in the shaft, a sealing element produced by primary shaping at the installation location. The sealing element is produced such that any actuating mechanisms are installed and held in place in the shaft and then a curable plastic material is injected into the shaft such that the material encloses the actuating element along a length that is greater than the inside diameter and smaller than its length.

Disclosed is an instrument assembly usable in a procedure. The instrument includes a connection for a working portion and to a tool handle. A tracking device or assembly may be associated with the instrument for determining a position of the instrument.

Forceps can include a drive pin, an outer tube, a first jaw, a second jaw, and an inner shaft. The outer tube can extend along a longitudinal axis. The first jaw can be pivotably connected to the outer tube. The first jaw can include a first flange that can be located at a proximal portion of the first jaw. The first flange can include a first chamfered edge configured to limit extension of the first flange laterally beyond an outer surface of the outer tube when the first jaw is in a closed position. The inner shaft can be located within the outer tube and can extend along the longitudinal axis.

A cannula mounting fixture may include a base, a first arm with a first cannula mounting bracket and a second arm with a second cannula mounting bracket. The first arm may be coupled to the base so that a first cannula mounted at the first mounting bracket is positioned within an opening in a patient's body. The second arm may be coupled to the base and includes a joint that allows a second cannula mounted at the second mounting bracket to be inserted through the opening. A cannula stabilizing fixture may include a base and a repositionable arm. The base may be configured to be securely and removably coupled to a first cannula that extends into an opening in a patient's body. The repositionable arm may include a first cannula holder coupled to the base and is configured to support a second cannula that extends into the opening.

A handle assembly of a hand-held surgical instrument includes a handle housing, a rack supported in the handle housing and configured to operably couple to a driven member of a surgical end effector, an idler pinion gear operably coupled to the rack, and an output pinion gear drivingly coupled to a motor. The output pinion gear translates the rack via the idler pinion gear.

A robotic surgical instrument includes a housing, a support plate disposed within the housing, and a shaft having a proximal end portion coupled to the support plate within the housing, a proximal segment, a distal segment, and an articulating portion interconnecting the proximal and distal segments. An end effector assembly is coupled to the distal segment of the shaft. A plurality of actuation components extends through the support plate and at least a portion of the shaft to operably couple to at least one of the end effector assembly, the articulating portion, or the distal segment to enable selective actuation of the end effector assembly. A seal configuration establishes seals against an interior annular surface of the shaft, about each actuation component of the plurality of actuation components, and within the proximal end portion of the shaft to inhibit fluid communication from the shaft into the housing.