A flexible wrist-type element, comprising: a base housing extending along a first longitudinal axis towards a base end; an operational housing extending along a second longitudinal axis towards an operational end; an operational element moveably connected to the operational housing; a joint assembly movably connecting the base housing and the operational housing; wherein the joint assembly allows relative movement of the operational housing and the base housing between a first position and a second position, wherein a point of intersection between the second longitudinal axis and the first longitudinal axis moves during movement between the first position and the second position; a driver assembly moveably supported by the base housing and the operational housing; and wherein the driver assembly is configured to actuate the operational element relative to the operational housing.

The present application discloses a cable-management system. The cables are divided into an outer group of cables and an inner group of cables. The system comprises a first cable guide, a second cable guide and at least four fixing members, wherein the first cable guide has a circular tube-shaped space, and the outer group of cables is partly accommodated between the first cable guide and the second cable guide; the second cable guide has a circular tube-shaped, and the inner group of cables is partly accommodated between the second cable guide and the first rotary shaft portion; and the fixing members respectively secure both ends of the outer group of cables or the inner group of cables on and along the first and second rotary shaft portions in a form in which the cables are arranged in parallel with each other, so that remaining portions of the outer group of cables or the inner group of cables are bent and suspended along the first and second rotary shaft portions in a U-shaped. The present application also discloses a rotary joint and a robot.

A robotic arm assembly includes a main body, a number of servos arranged within the main body, each of which has an output shaft, and a rotary connection member connected to the output shaft of one of the servos at a first end of the main body. The rotary connection member defines a through hole allows cables to pass therethrough.

A robotic surgical tool includes a drive housing having a first end and a second end, at least one spline extending between the first and second ends and including a drive gear that rotates with rotation of the spline, and a carriage movably mounted to the spline. An elongate shaft extends from the carriage and through the first end, an end effector is arranged at a distal end of the elongate shaft, and a wrist interposes the end effector and the distal end of the shaft. An activating mechanism is housed in the carriage and operatively coupled to the drive gear such that rotation of the drive gear correspondingly actuates the activating mechanism and thereby causes the wrist to articulate the end effector in at least one plane.

Embodiments relate to robotic arm assemblies. The robotic arm assembly includes an end-effector assembly. The end-effector assembly includes an instrument assembly. The instrument assembly includes an instrument and instrument driven portion. The elongated body includes an instrument central axis. The instrument driven portion includes a first central axis. The instrument driven portion is secured to a proximal end of the instrument in such a way that, when the instrument driven portion is driven to rotate, the instrument rotates relative to the first central axis. The end-effector assembly includes an instrument drive assembly. The instrument drive assembly includes an instrument drive portion. The instrument drive portion includes a second central axis. The instrument drive portion is configured to drive the instrument driven portion to rotate the distal end of the instrument relative to the first central axis. The second central axis intersects with and orthogonal to the first central axis.

A robotic arm assembly having an arm with at least one end effector pivotally connected to the end of the arm. The robotic arm assembly has a continuous belt driven by two motors. Manipulation of the speed and direction of the two motors controls the length of the arm and the tilt of the end effector. A third motor controls the tilt of the arm.

A variable stiffness actuator comprises a flexure plate which comprises a first cantilevered beam that extends inwards from an outer periphery of the flexure plate. A housing and the flexure plate rotatable about a common joint axis. A first contactor is pivotably secured at a revolute joint to the housing. The first contactor rotates about the revolute joint at a first rotation axis. The first rotation axis offset on the housing from the joint axis. The first contactor engages the first cantilevered beam at a variable angle about the rotation axis to adjust a stiffness of a mechanical connection between the flexure plate and the housing.

An internal-pressure rise prevention structure of a speed reducer according to the invention includes a speed reduction mechanism that decelerates rotation of an input part and transmits the decelerated rotation to an output part, and a container having a communication hole formed in a wall surface that defines an internal space for accommodating the speed reduction mechanism and lubricant. The communication hole is situated vertically above the level of the lubricant.

A robotic hand is provided including a main body defining the body of the robotic hand and a longitudinal axis; a finger hinged to the main body; an attachment defining the attachment surface for attaching to an external member; and a hinge defining a mutual rotation axis between the attachment and main body so as to vary the angle between the longitudinal axis and the normal to the attachment surface.

An actuator module is provided. The actuator module includes a motor part including a drive shaft and a drive part configured to rotate the drive shaft, a reducer installed on one side of the drive part and configured to increase an output torque according to driving of the motor part, a brake installed on an opposite side of the drive part and configured to suppress rotation of the motor part, an encoder installed on one side of the brake and configured to sense an operation of the drive shaft, a controller installed on one side of the encoder and electrically connected to the motor part to control the motor part, and a first housing configured to surround the motor part, the reducer, the brake, the encoder and the controller. An airflow path through which an airflow can flow is formed to extend from the motor part.