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US 2002/0161337 A1Published application
Automatically operable safety shield system for syringes
AssigneeAstraZeneca AB
InventorsDerek J Shaw, Brian R Law
Life of this patent
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AssigneeAstraZeneca AB
InventorsDerek J Shaw, Brian R Law
Estimating the term…
An automatically operable safety shield system (10) for use with a syringe (60) comprises: an inner holder (20) into which said syringe (60) may be inserted; an outer shield (30) mounted outwards from said inner holder (20) axially movable between retracted and extended positions; a spring positioned between said inner holder (20) and said outer shield (30), urging said outer shield (30) to its extended position; said inner holder (20) having at least one first opening (130), distally thereto, at least one first indentation (170), and said outer shield (30) having at least one first stop member (300) engageable with said opening (130) when said outer shield (30) is in said retracted position engageable with said first indentation (170) when said outer shield (30) is in said extended position; the outer shield may be released from its retracted position by action of a trigger positioned within said inner holder or by a protrusion on the syringe plunger.
An automatically operable safety shield system for use with a syringe, said safety shield system comprising:
An automatically operable safety shield system, comprising:
An automatically operable safety shield system according to any one of the preceding claims, said outer shield and inner holder having, respectively, proximal and distal abutment surfaces in opposing relationship to one another, which can engage one another to prevent movement of said outer shield beyond its extended position.
An automatically operable safety shield system according to any one of the preceding claims, said inner holder and outer shield being of a generally cylindrical shape and having a cross-section selected from the group consisting of circular and elliptical.
An automatically operable safety shield system according to any one of the preceding claims, at least one of said inner holder and outer shield having guide means for axial movement to prevent relative rotation of said inner holder and outer shield.
An automatically operable safety shield system according to any one of the preceding claims, said inner holder having an inner holder detent comprising a radially inwardly extending distal flange having an upper abutment surface which is contacted by said syringe, preventing further distal movement of said syringe in said inner holder.
An automatically operable safety shield system according to any one of the preceding claims, said inner holder having syringe engagement means for engaging and retaining said syringe.
An automatically operable safety shield system according to any one of the preceding claims, said inner holder having at its proximal end at least one radially extending protrusion usable as a finger grip.
An automatically operable safety shield system according to any one of the preceding claims, said outer shield not having at its proximal end any radially extending protrusions usable as a finger grip.
An automatically operable safety shield system according to any one of the preceding claims, said inner holder additionally comprising plunger rod retaining means which prevent backwards movement of said plunger rod when it is at least almost at its forwardmost position.
An automatically operable safety shield system according to any one of the preceding claims, said first stop member extending first outwardly and then inwardly from said outer shield such that said first stop member, when engaged with said first opening, has the centre of its pivotal axis inwards of the point of engagement with said first opening.
Dependencies are inferred from the claim text.