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463results about How to "Stable level" patented technology

Marking and guidance method and system for flexible fixation of a spine

A method and system for marking and guiding the insertion of securing members (e.g., pedicle screws) of a spinal fixation device. In one embodiment, the marking and guidance method and system includes the use of a guide tube configured to be inserted into a patient's back until a first end reaches an entry point on or near a vertebral bone of the patient's spinal column, wherein the guide tube includes a hollow cylindrical channel along its longitudinal center axis; a penetrating device configured to be positioned within the cylindrical channel of the guide tube and having a sharp tip configured to protrude outwardly from the first end of the guide tube so as to allow the first end of the guide tube to penetrate through the patient's back muscle and tissue and reach the vertebral bone at the entry point; a marking pin configured to be inserted through the cylindrical channel of the guide tube, after removal of the penetrating device, until a first end of the marking pin having a sharp tip reaches the entry point; and a pushing device configured to be inserted through the cylindrical channel of the guide tube and provide a driving force at a second end of the marking pin, opposite the first end, so as to drive and secure the first end of the marking pin into the vertebral bone, wherein the marking pin identifies the location of the entry point on the vertebral bone for subsequent implantation of a securing member of a spinal fixation device.
Owner:N SPINE INC

Wheel-legged obstacle crossing robot

The invention provides a wheel-legged obstacle crossing robot, and belongs to the field of mobile robots. The wheel-legged obstacle crossing robot comprises a frame and a wheel leg mechanism, connected with each other; the wheel leg mechanism comprises a frame joint, a mechanical arm steering device, a mechanism arm, a wheel body steering device and a wheel body device; the mechanical arm steeringdevice is rotationally connected with the frame joint; one end of the mechanical arm is connected with the mechanical arm steering device, and the other end of the mechanical arm is connected with the wheel body steering device; the wheel body device is rotationally connected with the wheel body steering device; the mechanical arm comprises a telescopic driving device and a quadrangular mechanismcapable of being folded and deformed; and a fixed end and an expansion end of the telescopic driving device are separately connected with the two ends of a diagonal of the quadrangular mechanism. Themechanical arm steering device can be used for driving the mechanical arm to rotate horizontally, the wheel body steering device can drive the wheel body device to rotate horizontally, and the mechanical arm moves in the height direction through the telescopic driving device of the mechanical arm, so that the wheel-legged obstacle crossing robot achieves the omnibearing driving of multiple degrees of freedom, thereby having high obstacle crossing performance.
Owner:BEIJING FORESTRY UNIVERSITY

Robot capable of synchronously climbing stairs

InactiveCN103693123AStable levelThe position of the center of gravity is not highVehiclesEngineeringHeavy load
The invention relates to a robot capable of synchronously climbing stairs. The robot comprises a tray component, a first walking component, a second walking component and a rotation driving device, wherein the tray component comprises a first support member, a second support member and a third support member, of which the mutual distance and height can be adjusted according to stair steps, the first walking component and the second walking component are respectively connected to the lower ends of the first and third support members and are the same in structure, each walking component comprises an axle, a left wheel member and a right wheel member which are located at the two ends of the axle, the two wheel members are symmetric and identical in structure, shape curves of each wheel rim consist of end-to-end-connected Archimedean spirals and arcs, then, the distance from the wheel rims to the axes of the axles is changed along with rotation, and the rotation driving device is mounted at the lower end of the second support member, is in transmission connection with the first walking component and the second walking component respectively and drives the first walking component and the second walking component. The robot can bear a heavy load, keep horizontal, stably and automatically climb the stairs and walk on flat ground.
Owner:SHANGHAI JIAO TONG UNIV
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