Bone reduction forceps provide both continuous and discrete adjustment of force. A worm gear rotatably attached to one arm of the forceps engages a rack attached to another arm of the forceps to provide both the continuous and discrete force adjustment. Buttress threads on the worm and/or the rack allow for rapid closure by squeezing the handles of the forceps. Rotating the worm gear allows for fine adjustment of closing force. A five-bar linkage provides increased mechanical advantage and an extra degree of freedom, compared to conventional forceps. Interchangeable tips provide flexibility, allowing a user to customize the forceps to a task or the user's preferences.

A surgical instrument includes a rotatable electrical coupling assembly having a first part and a second part that electrically couple and rotate relative to each other. The second part is carried by and rotates with a tube collar coupled to a transducer. A portion of the transducer is inserted through an aperture of the second part, but does not contact the second part. The first part of the assembly may electrically couple to the second part via pogo pins, brush contacts, or ball bearings. Alternatively, the first part may comprise conductive channels formed in the casing. The second part may comprise a rotatable drum with a conductive trace. In some versions, one or more components may comprise MID components. In another version, the rotatable electrical coupling assembly comprises a rotatable PC board and brush contact. Further still, a circuit board may be provided with the transducer inside a transducer casing.

A connection mechanism and manufacturing method for a surgical instrument includes an inner shaft member that extends at least partially through an elongated shaft member of the instrument and defines proximal and distal ends and is selectively movable in a longitudinal direction with respect to the elongated shaft member and includes at least one aperture that extends partially along the longitudinal direction and disposed distally from the proximal end. The inner shaft member enables a drive collar member to slide on the inner shaft member and reciprocate along the longitudinal direction. A drive collar stop member slides on the inner shaft member and moves along the longitudinal direction. The drive collar stop member then moves in a direction relative to the longitudinal axis to engage the aperture and limit further longitudinal motion of the drive collar member. An inner shaft stop member limits movement of the inner shaft.

A surgical instrument operable to sever tissue includes a body assembly and a selectively coupleable end effector assembly. The end effector assembly may include a transmission assembly, an end effector, and a rotational knob operable to rotate the transmission assembly and the end effector. The body assembly includes a trigger and a casing having a distal aperture configured to receive a portion of the end effector assembly. First and second coupling mechanism portions cooperatively couple the end effector assembly to the body assembly for use. The coupling may mechanically and/or electrically couple the end effector assembly to the body assembly via various coupling mechanisms. For instance, a threaded slip nut may couple to threads within the body assembly. In one configuration, the end effector assembly may have locking tabs that rotate into rotational recesses in the body assembly. The locking tabs may include electrical contacts and/or optically perceivable indicators.

A hand tool has a pivot connection pivotally attaching a first arm to a second arm, with the pivot connection fixed relative to the first arm and movable to first and second positions relative to the second arm. A spring urges the pivot connection into the first position. When jaws on the front ends of the arms clamp tissue with force greater than a pre-set threshold, the spring force is overcome and the jaws may move linearly apart, allowing for more uniform clamping of the tissue. The first arm may have an arm spring extending between a front segment pivotally attached to a rear segment of the first arm.

A support arm device includes a first drive part that is fixed to a base part and cause a first drive shaft to perform shaft rotation, a second drive part that is fixed to the base part and cause a second drive shaft to perform shaft rotation, and an arm part including at least one parallel link and that supports a predetermined tool. The arm part is caused to change an attitude to cause the predetermined tool to perform a predetermined rotational motion by the first drive part and the second drive part being driven.

An epicardial device for reducing or preventing regurgitation of blood through a valve of a heart includes a main body having a segment adapted to apply force to an epicardial surface of the heart. A member that applies counterforce to the force applied by the segment is also provided. A foundation is configured to be anchored to the epicardial surface of the heart. The foundation includes a surface configured with attachment features. The device further includes a surface configured with mating attachment features configured to attach to the attachment features of the foundation. The mating attachment features and attachment features are separable and reattachable to allow repositioning of at least a portion of the device relative to the foundation.

A device comprising: a a pair of arms; a blade; and a blade extending mechanism including detent positions where the blade is locked into a position related to each of the detent positions. The device is capable of switching between: a configuration where the arms are free to move towards each other, and the blade is locked into a position related to a first one of the detent positions; a configuration where the arms are secured together by a securing mechanism that prevents movement of the arms towards each other; and a configuration where the arms are secured together so that the arms are prevented from moving towards each other, and the blade is locked into a position related to a second one of the detent positions so that the blade is substantially flush with or extends beyond a distal end of the arms.

A stapling assembly comprising a proximal end, a distal end, a first jaw, a second jaw, a staple cartridge, a first motor-driven system, and a second motor-driven system is disclosed. The first jaw comprises a first bottom surface. The second iaw is rotatably coupled to the first iaw about a pivot and is movable between an unclamped position and a fully-clamped position. The second jaw comprises a second bottom surface. The staple cartridge comprises a plurality of staples removably stored therein. The first motor-driven system is configured to engage the second bottom surface of the second iaw to move the second iaw toward the fully-clamped position. The second motor-driven system is configured to engage the second jaw and the first bottom surface of the first jaw and hold the second jaw in the fully-clamped position. The second motor-driven system is actuatable after the first motor-driven system has been actuated.

A first subassembly includes a body and an ultrasonic blade. A second subassembly is configured to removably couple with the first subassembly and includes a first clamp arm and a first clamp arm actuator. The first clamp arm is configured to be located on a first side of the longitudinal axis of the body, and the first clamp arm actuator is configured to be located on a second side of the longitudinal axis, when the second subassembly is coupled with the first subassembly. The third subassembly is similar to the second subassembly except that the second clamp arm of the third subassembly is configured to be located on the second side of the longitudinal axis of the body when the third subassembly is coupled with the first subassembly.