A firing mechanism and a circular stapler are provided. The firing mechanism includes a staple pushing assembly, which includes an actuating rod provided with a stopping groove; a firing handle, wherein a pin post is provided in the firing handle, a first end of the pin post is capable of protruding from a first end of the firing handle and entering the stopping groove, to stop the firing handle from rotating relative to the actuating rod; and a pressing button capable of moving along a first direction to press the first end of the pin post to move towards a second end of the firing handle. Before the stapler reaches a ready-to-fire state, the pin post is inserted in the stopping groove of the actuating rod, to limit the rotation of the firing handle, therefore the operator cannot press the firing handle to fire the stapler.

The disclosed embodiments relate to systems and methods for a surgical tool or a surgical robotic system. A coupling device driven by a plurality of drive disks corresponds to a first motor and a second motor. One or more processors are configured to send a low torque command to a first motor, send the low torque command to a second motor, determine whether the first motor and the second motor meet one or more hold engagement criteria, send a high torque command to the first motor in response to the first motor and the second motor meeting the one or more hold engagement criteria, and send the high torque command to the second motor in response to the first motor and the second motor meeting the one or more hold engagement criteria.

Described herein is an anti-skid surgical instrument for use in preparing holes in bone tissue. The disclosed surgical instrument provides the ability to prepare a precise hole in bone tissue during surgery (e.g., spinal surgeries and pedicle screw placement, intramedullary screw placement). The disclosed surgical instrument accomplishes precise hole placement regardless of whether the angle between the drill axis and surface of the bone tissue is perpendicular. The disclosed technology includes a flat drilling surface which is perpendicular to the surface of the body of the surgical instrument. This reduces the likelihood of the surgical instrument skidding on the surface of the bone tissue and thereby increases the precision of the hole.

A compression screw driver system including a drive member having a shaft extending from a proximal end to a distal end. A drive selection member is positioned about the shaft and is axially moveable along the shaft between an engagement position and a disengaged position. A distal portion of the drive selection member defines a first engagement structure. A compression sleeve is positioned over the distal end of the shaft. The proximal end of the compression sleeve defines a second engagement structure which complements the first engagement structure and the distal end of the compression sleeve defines a contact surface. In the engagement position the first and second engagement structures are engaged and the compression sleeve rotates with the drive member and in the disengaged position the first and second engagement structures are disengaged and the compression sleeve remains stationary while the drive member rotates.

A tool includes a brace and a hook. The brace includes two posts extending from a base portion. The two posts include a first post that is spaced a distance apart from a second post, with the first post disposed in a first plane and the second post disposed in a second plane that is not the same as the first plane. A side of the base portion opposite from the first post and opposite from the second post includes a recess formed in the base portion. The hook is connected to a handle. The hook has a first section attached to the handle, a second section that is curved to have a J-hook curvature configured for accessing an obturator foramen of the patient, and a third section including a tip. The tip of the hook is removably insertable into the recess formed in the base portion.

An instrument (10) having a tool (15) of a particularly simple design comprises jaws (16, 17) with jaw supports (46) supported by spaced-apart hinges on a shared socket part 18. The hinge axes (27, 28) of the hinges are oriented parallel relative to each other and are at a distance from each other. A slit (24) for precisely guiding a knife (25) may be provided between the two. The jaw supports (46) of the jaws (16, 17) are guided in their own hinges with minimal play and hence in a precise manner. They are held against each other by transverse interlocking means (37), thereby ensuring a simple assembly and precise guiding.

A circular stapling device includes an anvil assembly and an adaptor assembly including a shell assembly. The adaptor assembly includes an anvil retainer including an asymmetric tip. The anvil assembly has a center rod, an anvil head supported on the center rod, and an alignment member. The center rod has a proximal portion and a distal portion and defines a channel that extends from the proximal portion to the distal portion. The alignment member is positioned within the channel and is configured to engage the asymmetric trocar tip of the anvil retainer of the adaptor when the anvil assembly is attached to the anvil retainer to properly align the anvil assembly with the shell assembly.

A surgical instrument comprising a shiftable transmission is disclosed. The transmission comprises a mechanism for assuring that the transmission is in one of a plurality of predefined configurations.

An apparatus includes an interface assembly and a shaft assembly. The interface assembly is for use with a robotic system and includes a first drive assembly. The first drive assembly includes a first slot having a distal recess and a transverse recess. The shaft assembly is removably couplable with the interface assembly and includes an end effector and a first coupling feature. The first drive assembly of the interface assembly actuates the end effector of the shaft assembly. The first coupling feature is couplable with the first slot of the first drive assembly to longitudinally fix the shaft assembly relative to the interface assembly.

A medical driver can include a handle coupled to a drive shaft. The drive shaft can couple with an access assembly for drilling into bone, and can be displaced relative to the handle from a rotationally restricted state, in which the drive shaft is rotationally restricted relative to the handle, to a drilling state, in which the drive shaft is freely rotatable in at least one direction relative to the handle. The medical driver can further include a mechanical energy-storage device coupled to the drive shaft that can automatically rotate the drive shaft relative to the handle upon transition of the drive shaft to the drilling state. A biasing element can be coupled to the handle and to the drive shaft to provide a bias to maintain the drive shaft in the rotationally restricted state. When distal movement of the drive shaft is opposed, application of a distally directed force on the handle in an amount sufficient to overcome the bias of the biasing element can transition the drive shaft to the drilling state to automatically permit the energy-storage device to rotate the drive shaft relative to the handle.