Method and device for manufacturing plungers for medical syringes, plungers obtained thereby, as well as syringe for medical purposes
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United States of America Patent
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Dec 6, 2011
Grant Date -
Apr 27, 2006
app pub date -
Sep 24, 2003
filing date -
Oct 14, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Method for manufacturing plungers for medical syringes, whereby such a plunger (3) consists of at least two parts, namely a longitudinal plunger body (4) made of plastic and a piston body (5) provided at the front end of the plunger body (4) which consists of a plastic which is softer than the plastic of the plunger body (4), characterised in that such a plunger (3), or at least a part (36) thereof, is formed by first manufacturing the piston body (5) and then the plunger body (4), or at least a part (37) of this plunger body (4), by means of injection moulding, whereby the plunger body (4), or the above-mentioned part (37) thereof, is injected against the piston body (5).
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