US 5,312,429 AGranted

Scalpel handle and blade release assembly

AssigneeDevon Industries, Inc.

InventorWilliam L. Noack

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Abstract

An apparatus is disclosed whereby a detachable surgical blade is easily and effectively removed from blade handle adapted for use with detachable surgical blades. The apparatus is a two part assembly comprising a scalpel handle and a blade release slide element. The handle includes a blade mounting tang on the proximal end thereof and a grip on the distal end thereof. The handle has dimensions such that a portion of the rear edge of the scalpel blade protrudes latitudinally beyond the perimeter of that portion of the grip adjacent to the tang. The blade release slide element is slidably mountable on the handle and is of a length such that, when in assembled relation with the handle, the blade release slide element extends forwardly from an intermediate section of the grip to a section of the grip rearward of the tang. The blade release slide element has a blade engaging and release ramp which inclines from the proximal end of the handle to the distal end of the handle as the blade mounting portion of the tang extends upwardly. Removal of the blade is accomplished by a one handed digitally activated sliding movement of the blade release slide element towards the proximal end of the handle whereby the blade engaging and release ramp engages the protruding portion of the rear edge of the blade causing the rear portion of the blade to flex upwardly and slide forward off the tang.

A blade handle and release assembly adapted for use with a detachable surgical blade wherein said blade has a keyed slot with a wide portion and a narrow portion and wherein said blade has a rearward portion with a rear edge, said assembly comprising:

a blade handle having a proximal end and a distal end with a blade mounting tang on said proximal end and a grip on said distal end;
and
a blade release slide element mounted on said grip for slidably engaging said blade and discharging said blade from said blade mounting tang via a one handed manipulation thereof;
said blade mounting tang having an upraised portion contoured for complemental engagement with said keyed slot and a recessed portion adjacent to said grip for receiving said rearward portion of said blade;
said grip having a forward section adjacent to said blade mounting tang with a reduced cross-sectional area having dimensions such that a portion of said rear edge of said blade protrudes latitudinally beyond the perimeter of said forward section and having a stop for holding said blade release means in a fixed position on said blade handle prior to initiation of the blade disengagement procedure;
said forward section having an abutment surface adjacent to said recessed portion of said blade mounting tang which is complimentary contoured to abut a non-protruding portion of said rear edge of said blade;
said blade release slide element having a configuration such that said blade release slide element is slidably mountable over said forward section of said grip and having a blade engaging and release ramp for engaging said protruding portion of said rear edge and discharging said blade from said handle in response to a digitally activated sliding movement of said blade release slide element toward said proximal end of said blade handle, said blade engaging and release ramp inclining from said proximal end of said handle to said distal end of said handle as said blade mounting tang extends upwardly from said recessed portion of said blade mounting tang to said upraised portion of said blade mounting tang.

4 more elements

Abstract

Claims4