Disposable safety syringe

A - Human Necessities – 61 – M

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A61M 5/32 (2006.01)

Patent

CA 2280716

The syringe is provided with a needle-covering sleeve (14), which is slidably fitted on the syringe barrel (1) and is held in its retracted rest position by means of retaining tongues (10), which hook its rear rim (13). At the end of the injection stroke of the plunger (2), a rear head (8) of the stem (3) of the plunger (2) radially opens the retaining tongues (10) apart, which release thereby the needle-covering sleeve (14). Then, the latter is axially advanced by a spring (16), until it entirely covers the needle (5). The needle-carrier (4, 104) has at least one lateral locking projection (28), slidably engaging in a longitudinal slot (18), which is formed in the needle-covering sleeve (14) and is delimited at its sides, at least in its progressively tapering rear end (118), by two convergent and elastically openable stop sticks (19) which allow the passage of the locking projection (28) between their free ends, but then point against it and fasten it to the needle-covering sleeve.

La présente invention concerne une seringue comprenant un manchon (14) recouvrant une aiguille montée coulissante sur le tube (1) d'une seringue et maintenu dans une position de repos rétracté à l'aide de languettes (10) de retenue s'accrochant à son rebord (13) arrière. A la fin de la course du piston (2) pour injection, uen tête (8) arrière de la tige (3) du piston (2) écarte radialement les languettes (10) de retenue libérant ainsi le manchon (14) recouvrant l'aiguille. Puis, ledit manchon est axiallement déplacé par un ressort (16) jusqu'à ce qu'il recouvre entièrement l'aiguille (5). Le support d'aiguille (4, 104) comprend au moins une protubérance (28) latérale de verrouillage s'engageant de manière coulissante dans une fente (18) longitudinale ménagée dans le manchon (14) recouvrant l'aiguille et est délimitée sur ses côtés, au moins à son extrémité (118) arrière qui se rétrécit progressivement, par deux arrêtoirs convergeants susceptibles de s'ouvrir de manière élastique, qui permettent le passage de ladite protubérance (28) de verrouillage entre leurs extrémités libres mais viennent, ensuite, buter par la pointe contre ladite protubérance de verrouillage et la fixe au manchon recouvrant l'aiguille.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Disposable safety syringe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Disposable safety syringe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disposable safety syringe will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1819812

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.