Guiding instrument to pierce the bone cortical, auxiliary in the

Details Guiding instrument to pierce the bone cortical, auxiliary in the Guiding instrument to pierce the bone cortical, auxiliary in the

1989-04-19

1990-12-18

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 96, 606102, A61B 1756

Patent

active

049783513

ABSTRACT:
An instrument for positioning of intra-marrow pin orifices and to guide a bit for a drilling of a bone cortical, in which an elongated member having a width and thickness suitable to resist a surgeon's pushing and a grip at one end thereof and a substantially narrowed portion at the other end for reducing as much as possible the size of an incision to be made thereby in a patient's tissues, and having a projection positioned between the ends closer to the other end and orthogonal thereto is provided with a gauge thereon, and a slidable alignment body having slidably connected with the projection for slidably connecting the prismatic body with the projection, and the slidable alignment body is fixedly coupled by a screw with the elongated member at a position thereon closer to the other end and locking the slidable alignment body to the elongated member at selected positions on the projection and the alignment body is slidably movable to different previously selected positions on the projection; and the alignment body has two spaced orifices oriented transversely to the projection for receiving and guiding a bit into alignment with an orifice in the intra-marrow pin.

REFERENCES:
patent: 2200120 (1940-05-01), Nauth
patent: 2531734 (1950-11-01), Hopkins
patent: 3835849 (1974-09-01), McGuire
patent: 3867932 (1975-02-01), Huene
patent: 4235428 (1980-11-01), Davis
patent: 4364381 (1982-12-01), Sher et al.
patent: 4622959 (1986-11-01), Marcus
patent: 4917111 (1990-04-01), Pennig et al.
Zimmer Manf., 2/1947, p. 32, Key Dual Bone Plate Outfit.

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