Endoprosthetic bone devices

Details Endoprosthetic bone devices Endoprosthetic bone devices

1984-03-21

1986-05-06

Apley, Richard J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 18, 623 22, A61F 228

Patent

active

045869324

ABSTRACT:
In order to provide for lengthening of a long bone, such as in place of natural growth, an endoprosthetic device (10, 20) is provided in a two-part telescopic form defining a longitudinal passageway (15) in which ball bearings (40) are progressively locatable to control adjustably the device length. At least one end (24) of the device will be adapted for securement in the bone, and the other end (11) can be similarly adapted or define an articulation surface for a joint. The telescoped parts are preferably mutually keyed (22, 23) against rotation, the passageway is preferably of like cross-sectional form as the ball bearings so that the latter form a singular sequence therein, and the ball bearings are suitably located by way of an acutely inclined branch passageway (17).

REFERENCES:
patent: 4376384 (1983-03-01), Brown et al.

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