Table of Contents
Advertisement
2.1.1 Wrist unit
Starting at the neutral position, the joint can be flexed by approximately 75° in 4 locking positions;
extension is 45° with 3 locking positions. Flexion and extension are performed passively.
A flexible and a rigid mode are available according to the application situation.
Flexible mode
Flexible mode simulates the natural movement characteristics of a relaxed wrist joint. This flexible
condition closely approximates the physical movement characteristics of the hand and wrist joint.
To select the flexible mode, push the unlock lever to the stop (see fig. 2) until it engages. The joint
can be moved without engaging at the ratchet positions. Pushing the lever again terminates the
flexible mode and the wrist unit engages at the next available position in the rigid mode.
Rigid mode
Various everyday conditions require an individually adjustable wrist unit of the gripping compon
ent in the rigid mode. When the unlock lever is only pushed lightly and not to the stop (see fig. 2),
the wrist unit can be moved to the desired position. When the unlock lever is released, the wrist
unit engages at the next available position.
4
Lateral Pinch
The thumb moves laterally to the index finger; this laterally fixates flat objects
when the thumb is in the closed position.
Open Palm
In the Open Palm position the thumb is positioned far to the outside; this
achieves a flat hand position with a completely opened thumb position.
Opposition Power Grip
The opening width makes it possible to hold cylindrical objects with large
diameters and with an open thumb position.
Tripod Pinch
Together with the index finger and the middle finger, the thumb forms a
three-point support; small objects can then be securely fixated with the
thumb in closed position.
Finger Abduction/Adduction
By spreading the fingers, a flat, thin object (< 3 mm / < 0.12 inch) can be
held between the fingertips when closing the hand.
Advertisement
Table of Contents
