A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/60 (2006.01)
Patent
CA 2173020
In an angularly adjustable, releasably lockable ball joint, the ball has a surface covered with regular polygonal patterns of spaced-apart engaging surfaces, such as protuberances engaged in position on the surface of the ball or spherical members disposed on the surface of the ball and free to move about the ball surface. Theengaging surfaces define concavities therebetween. An actuator tip is provided to penetrate at least one concavity and simultaneously contact all of the engaging surfaces of the pattern to lock the ball -actuator together, thereby fixing the orientation of shanks attached to the ball and actuator. A mechanism for driving the actuator is also taught which comprises a housing and an overcentre assembly of two interlocking parts which are driven between the overcentre and collapsed position by use of aunattached sled which moves axially within the housing and is driven by a pair of buttons extending from the housing. A terminal device locking mechanism is taught for releasable locking a terminal device to a prosthetic limb. The locking device includes a biased retaining means which allows passage of a stem of the terminal device into the bore of a prosthetic limb but which engages the stem once it has been fully inserted. The stem is released from the bore by driving the biasing means out ofengagement with the stem.
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