Surgical apparatus including a spring activated locking device

Details Surgical apparatus including a spring activated locking device Surgical apparatus including a spring activated locking device

1990-09-27

1992-12-15

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 53, 606 79, A61B 1700

Patent

active

051712458

ABSTRACT:
Surgical apparatus in which a locking device is provided for releasably securing a surgical tool in a sleeve. A lock housing is movable on the sleeve, the lock housing having a through opening through which the tool is insertable to be received into the sleeve. A lock member on said lock housing has a push button actuable for opening the lock housing to reception of the tool through the through opening and into the sleeve. The lock member has means for automatically locking the tool against removal from said lock housing upon release of the push button. A tapered part on the sleeve receives a correspondingly tapered portion of the tool to thereby assure a snug fitting connection of said sleeve with the tool. A hand engageable portion on the lock housing is actuable for pulling the lock housing axially with respect to said sleeve in a direction opposite the direction in which the tool is inserted into the sleeve and for engaging the lock member with a corresponding part of the tool and thereby for positively axially holding together the tapered parts of the sleeve and tool while locking the tool axially with respect to the sleeve.

REFERENCES:
patent: 4586496 (1986-05-01), Keller
patent: 4589414 (1986-05-01), Yoshda et al.
patent: 4697586 (1987-10-01), Gazale
patent: 4798213 (1989-01-01), Doppelt
FIGS. 1 and 2, partially broken and central cross-sectional view (1 sheet).
FIGS. 3 and 4, side elevational and central cross-sectional view (1 sheet).
Sketch 1, pictorial view of a tool (1 sheet).
Sketches 2 and 3, aligned and non-aligned flange (1 sheet).

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