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Syringe for medical purposes

  • US 20020002354A1
  • Filed: 04/13/2001
  • Published: 01/03/2002
  • Est. Priority Date: 04/15/2000
  • Status: Abandoned Application
First Claim
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1. A syringe for medicinal purposes comprising a syringe cylinder formed at one end with a fitting adapted to receive a cannula;

  • a plug shiftable in said cylinder toward said end to displace contents of said cylinder through said cannula;

    a plunger engaging said plug and extending out of an opposite end of said cylinder said plunger being formed with a thumb rest engageable by said thumb in two opposite axial directions; and

    a protective sleeve surrounding said cylinder and slidable therealong, said sleeve being formed with an inwardly open detent groove and said formation having a detent member engageable in said groove upon displacement of said sleeve over said cannula, said protective sleeve being formed with a receiver for fingers of the user axially engageable by the fingers in opposite axial directions whereby, upon spreading of the thumb from the fingers, said sleeve is displaced along said cylinder to engage said detent member in said groove.

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