US 3,943,934 A · Quick release mechanism for surgical devices

Abstract

A quick release device for a powered surgical instrument, for example, a Mueller osteotomy saw, includes a coupling having a spindle which forms a mounting surface, the spindle being driven with the coupling by the power source. Located on the spindle is a locking pin assembly movable between a locking and an unlocking position, the spindle cooperating with a plurality of concentrically disposed latching pins which latch the medical instrument to the spindle in driving relationship therewith. The medical instrument, for example, a saw blade, includes a predetermined number of apertures corresponding to the number of latching pins on the spindle, each of the apertures including a pin receiving end and a latching end. Eccentrically positioned with respect to the apertures is a locking pin receiving aperture through which the locking pin on the spindle is received. The instrument is assembled over the locking pin which has been depressed, moved such that the latching pins are received by the latching pin apertures, and then manipulated such that the latching pins are urged into the latching end of the apertures. Upon release of the now aligned locking pin which includes an outer tapered surface, the mounted instrument is fixed and locked with respect to the spindle. To release the instrument, or to alter its position, the locking pin is depressed, the instrument moved such that the latching pins are aligned with the pin receiving portion of the apertures, and the instrument can either be rotated by relocating same to its desired position or replaced by another instrument.

Claims18

Dependent claims

A medical instrument adapted to be moved by a power source and intended for quick release therefrom comprising a mounting portion for retention in driving relation with a power source,

said mounting portion including a predetermined number of apertures generally radially disposed with respect to a predetermined reference center point,
each aperture including a pin receiving portion and a latching portion, and
a locking pin aperture eccentrically located with respect to said predetermined reference center point whereby upon mounting of said instrument on the power source by alignment of the pin receiving portion of each of said predetermined apertures with its respective latching pin and displacing same to engage said latching pins with the latching portion of said apertures, said latching portions of said apertures are radially disposed with respect to said reference center point and said locking pin aperture is eccentric with said reference center point to permit wedging engagement thereof by a locking pin.

A quick release mechanism for attaching a movable medical instrument to a source of power for powered movement of said instrument comprising:

coupling means for providing a driving connection to a power source,
means cooperating with said coupling means to form a mounting surface which receives said medical instrument for movement with said coupling means,
locking pin means cooperating with said mounting surface and being movable from a locking position to an unlock position,
a plurality of latching pins on said mounting surface for receiving a medical instrument to be driven by the power source,
a medical instrument for mounting on said mounting surface and including means forming a plurality of apertures at least equal in number to said plurality of latching pins,
each said aperture including a pin receiving end which receives a latching pin and a communicating latching end which receives the associated latching pin in latched engagement,
said medical instrument including means defining a locking pin receiving aperture so arranged that as said locking pin means is moved to the unlock position, said medical instrument positioned with the plurality of apertures disposed such that said latching pin receiving ends are aligned with said latching pins to place said instrument in contact with said mounting surface and moved therealong to effect engagement between the latching end of said aperture and the corresponding latching pin whereby upon movement of said locking pin means to the locking position said medical instrument is held by said latching pins.

4 more elements

Dependencies are inferred from the claim text.

Quick release mechanism for surgical devices

Life of this patent

Quick release mechanism for surgical devices

Life of this patent

Abstract

Claims18