Forceps including a housing, a first body, a second body and a drive shaft. The first body has a passageway extending therethrough. The drive shaft extending through the passageway and connected to the first body such that the first body and the drive shaft are slidable with respect to the housing to drive jaws located at a distal portion of the drive shaft between an open position and a closed position. The second body having a second passageway. The drive shaft extending through the second passageway such that the second body is guided by the drive shaft and is slidable relative to the first body and the drive shaft to displace a blade shaft between a retracted position and an extended position.

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.

A robotic surgical assembly includes a drive assembly and a shaft assembly. The drive assembly is detachably mountable to a surgical robot and includes roll, pitch, and clamp/fire inputs configured to drivingly couple with respective outputs of the surgical robot. The shaft assembly is mounted to the drive assembly and configured to detachably couple with a stapler reload assembly that includes a reload roll shaft, a reload pitch shaft, and a reload clamp/fire shaft. The shaft assembly includes a roll shaft, a pitch shaft, and a clamp/fire shaft. The roll shaft is drivingly coupled with the roll input and configured to detachably couple to the reload roll shaft. The pitch shaft is drivingly coupled with the pitch input and configured to detachably couple to the reload pitch shaft. The clamp/fire shaft is drivingly coupled with the clamp/fire input and configured to detachably couple to the reload clamp/fire shaft.

A method of fabricating an ultrasonic medical device is presented. The method includes machining a surgical tool from a flat metal stock, contacting a face of a first transducer with a first face of the surgical tool, and contacting a face of a second transducer with an opposing face of the surgical tool opposite the first transducer. The first and second transducers are configured to operate in a D31 mode with respect to the longitudinal portion of the surgical tool. Upon activation, the first transducer and the second transducer are configured to induce a standing wave in the surgical tool and the induced standing wave comprises a node at a node location in the surgical tool and an antinode at an antinode location in the surgical tool.

A tool has a handle and an elongate shaft that extends distally from the handle. A distal portion of the shaft is inserted into a subject during a surgical procedure. An optical fiber delivers laser energy to a tip at the distal portion of the shaft. The tip includes a mechanical cutting mechanism including a moving part that absorbs the laser energy, thermally conducts the absorbed energy to tissue that is disposed between the moving part and another part, and moves with respect to the other part in order to cut tissue that is disposed between the parts using a mechanical force that is lower than a mechanical force that would be required to cut the tissue in the absence of the laser energy. Other embodiments are also described.

A tool for a medical instrument includes a stationary component, a branch which is pivotable relative to the stationary component about a pivot axis, a transmission device for transmitting a force to the pivotable branch, and a coupling device for coupling the transmission device to the pivotable branch in such a way that a translation of the transmission device entails a pivoting movement of the pivotable branch about its pivot axis. The coupling device includes several coupling portions on the pivotable branch and several coupling portions on the transmission device. Each coupling portion on the pivotable branch is assigned to a corresponding coupling portion on the transmission device. The coupling portions are arranged and designed such that the coupling of pivotable branch and transmission device is effected, depending on the positions of pivotable branch and transmission device, by different pairs of corresponding coupling portions.

An ultrasonic surgical device comprises a handle assembly, a shaft assembly, and a removable transducer module. The transducer module includes a waveguide, a locking mechanism, and an electronics assembly including at least one button. The handle assembly includes a trigger assembly configured to actuate the button(s) of the electronics assembly when the transducer module is coupled with the handle assembly. The shaft assembly engages the waveguide of the transducer module and is disposed at the distal end of the handle assembly. The distal end of the shaft assembly includes a harmonic blade. When assembled with the handle assembly, the transducer module is capable of providing ultrasonic energy to the harmonic blade.

A surgical instrument. In one form, the surgical instrument comprises a first jaw and a second jaw that is movably supported relative to the first jaw for selective movement between open and closed positions relative to the first jaw. A firing drive shaft is rotatably supported in one of the first and second jaws. A firing member operably interfaces with the firing drive shaft for selective axial travel in response to rotation of the firing drive shaft. The surgical instrument further comprises a distal power shaft that is separate and distinct from the firing drive shaft and is configured for selective operable engagement with the firing drive shaft. A closure member is supported for axial travel on a proximal end portion of the first jaw and is configured for selective threaded engagement with a portion of the distal power shaft.

A surgical instrument includes a first power source and a second power source. The first power source is configured to deliver power to a surgical instrument at a first rate of discharge. The second power source is configured to deliver power to the first power source at a second rate of discharge. The first power source and the second power source are positioned within the surgical instrument. The first power source and the second power source are further configured to communicate with a control module. The control module may rely on power from the first power source to drive an end effector of the surgical instrument. The end effector may comprise a harmonic/ultrasonic blade, RF electrosurgical electrodes, powered cutting/stapling features, and/or various other types of components.

A force transmission mechanism for a surgical instrument includes a worm drive, a lever arm, and an actuation element. The lever arm may include a follower member at a first end of the lever arm. The follower member engages the worm drive and is configured to be driven by the worm drive. The actuation element is connected the lever arm. The actuation element is configured to transmit force to actuate an end effector of the surgical instrument. Rotational movement of the worm drive imparts translational movement to the actuation element via the lever arm.