A direction-adjustable jig is capable of translating an artifact between two mutually perpendicular planes in a three-dimensional space. The jig includes a base, a sliding member, and a hinge member. The base has a pair of side walls each having a first guiding portion. The first guiding portion has a lower guiding portion and an upper guiding portion in communication with each other. The lower guiding portion and the upper guiding portion are formed at different height vertically. The sliding member is disposed reciprocatingly on the base and in between the side walls. The hinge member is pivotally connected to the sliding member and has a pair of second guiding portions for engaging the first guiding portions. The reciprocating motion of the sliding member allows the hinge member to rotate above the base and change its direction.

Actuation device for a connector having a guide structure with at least one guide rail extending along a rail axis, and a carriage device with a support element, at least one sliding structure that is mounted to the support element, a pivot unit that is mounted to the support element and an arm that is mounted to the pivot unit such that the arm is supported pivotable relative to the support element by means of the pivot unit. The carriage device is beared on the at least one guide rail by the at least one sliding structure. The carrier device is moveable between an initial position and a connection position. The at least one guide rail has an upper guide surface, a lower guide surface and a lateral guide surface. The at least one sliding structure has at least three wheels.

A surgical instrument may comprise a chassis, a shaft coupled to the chassis at the proximal end of the shaft, an end effector coupled to the shaft at the distal end of the shaft, a force transmission mechanism coupled to the chassis, and an actuation element connected between a lever arm of the force transmission mechanism and the end effector. The force transmission mechanism includes a worm drive, and the lever arm comprising a first end and a follower member at the first end of the lever arm, wherein the follower member is engaged with the worm drive and is configured to be driven by the worm drive. Rotational movement of the worm drive imparts translational movement to the actuation element via the lever arm, and the lever arm slides along a generally linear direction relative to the chassis to impart the translational movement to the actuation element.

An exoskeleton includes a first link that pivots in a transverse plane about a first vertical axis and a second link that pivots in a transverse plane about a second vertical axis. The second link is coupled to the first link. An arm support assembly is coupled to the second link and pivots about a horizontal axis. The arm support assembly includes a spring that generates an assistive torque that counteracts gravity. The arm support assembly provides the assistive torque to an arm of a wearer to support the arm of the wearer. The arm support assembly further includes a cam profile and a cam follower. Contact between the spring, cam follower and cam profile determines an amount of the assistive force provided by the arm support assembly. A cuff is coupled to the arm support assembly and the arm of the wearer.

A robot joint device may include a first frame unit having a first hollow portion, a second frame unit having a second hollow portion, the second frame unit spaced apart from the first frame unit, a rotational axis unit on and between the first and second hollow portions and configured to rotate around first, second and third axes which are perpendicular to one another, a first link unit extending to bypass the rotational axis unit, connected to each of the first and second frame units with the rotational axis unit interposed therebetween, and configured to rotate around the first and second axes, and a second link unit extending to bypass the rotational axis unit while intersecting with the first link unit, connected to each of the first and second frame units with the rotational axis unit interposed therebetween, and configured to rotate around the first and second axes.

An example device may include a rounded outer incline ramp and a rounded inner incline ramp surrounding a central axis. The rounded inner incline ramp and the rounded outer incline ramp may be inversely aligned relative to the central axis. The device may also include a piston carrier oriented in a direction parallel to the central axis. The piston carrier may include a first piston including a first roller positioned on the two ramps at a first point, where the first piston is configured to act on the two ramps in a direction parallel to the central axis. The piston carrier may also include a second piston including a second roller positioned on the two ramps at a second point opposite the first point, where the second piston is configured to act on the two ramps in a direction parallel to the central axis.

A marking end effector for a robotic system is disclosed for marking a target surface. The end effector includes a housing including a cylindrical cavity and guide slots. The end effector also includes a marker holder assembly including a cylindrical marker holder and guide bearings. A biasing member is provided between the marker holder assembly and a base of the cavity. The marker holder rotates and translates when the end effector is advanced toward the target surface, and a pattern is correspondingly marked on the surface.

An example device may include a rounded outer incline ramp and a rounded inner incline ramp surrounding a central axis. The rounded inner incline ramp and the rounded outer incline ramp may be inversely aligned relative to the central axis. The device may also include a piston carrier oriented in a direction parallel to the central axis. The piston carrier may include a first piston including a first roller positioned on the two ramps at a first point, where the first piston is configured to act on the two ramps in a direction parallel to the central axis. The piston carrier may also include a second piston including a second roller positioned on the two ramps at a second point opposite the first point, where the second piston is configured to act on the two ramps in a direction parallel to the central axis.

A gripper mechanism is provided, which relates to the technical field of grippers. The gripper mechanism includes a motor, a cylinder barrel, a piston and a guide assembly. The piston reciprocates in the cylinder barrel under the action of the motor and the guide assembly. The piston includes a piston body and a piston rod located in the piston body. Both ends of the cylinder barrel are respectively provided with cylinder heads for limiting the maximum distance and the minimum distance between the piston body and a part to be gripped. The piston rod includes a driving shaft, a cross slider coupling and a gripping head which are connected in turn. The power output by the motor is transmitted to the gripping head through the driving shaft and the cross slider coupling in turn.

A gripper mechanism is provided, which relates to the technical field of grippers. The gripper mechanism includes a motor, a cylinder barrel, a piston and a guide assembly. The piston reciprocates in the cylinder barrel under the action of the motor and the guide assembly. The piston includes a piston body and a piston rod located in the piston body. Both ends of the cylinder barrel are respectively provided with cylinder heads for limiting the maximum distance and the minimum distance between the piston body and a part to be gripped. The piston rod includes a driving shaft, a cross slider coupling and a gripping head which are connected in turn. The power output by the motor is transmitted to the gripping head through the driving shaft and the cross slider coupling in turn.