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US 6,743,214 B2Granted
Withdrawal spike
AssigneeB. Braun Melsungen AG
InventorsNorbert Heil, Bernd Siemon, Klaus Siemon
Life of this patent
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Abstract
The withdrawal spike comprises a piercing thorn (10) and a housing (12) having filter chambers for air and fluid. In a connecting piece (23) for connection of an external device a self-closing valve (31) is arranged. Said valve (31) is adapted to prevent fluid from unintentionally flowing out of the withdrawal spike.
Claims6
A withdrawal spike for piercing a stopper of a medical container to withdraw medical fluids therefrom comprising
- a piercing thorn (10) having a ventilation duct (16) and a fluid duct (15),
- a gripping part (19, 20) connected with said piercing thorn (10),
- a connecting piece (23) united with the gripping part (19, 20) and having an insertion duct (24),
- a protective jacket (26) surrounding said connecting piece (23) in outward spaced relationship thereto, said protective jacket (26) including a hinged cover (27) which closes a space containing said connecting piece (23),
- a self-closing valve (31) arranged in a fluid path defined at least in part by said fluid duct (15) a tubular valve opener (33) within said connecting piece (23) and being movable to open said valve (31) and, said valve (31) being constructed and arranged for opening by insertion of a tube into said connecting piece (23) which moves said connecting piece (23) to open said valve (31).
2 more elements
Dependencies are inferred from the claim text.