A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 5/32 (2006.01) A61M 5/50 (2006.01)
Patent
CA 2605115
Means to control the retraction of an auto-retractable safety syringe to minimise splashback or splatter is disclosed. The end of a hollow plunger (11) is covered by a sealing member (14) that, upon retraction, is dislodged so that the needle assembly and seal enters the hollow plunger. Three methods by which the auto-retraction is controlled are disclosed. Firstly there is provided a taper within the inside of the hollow plunger which creates varying resistance of movement to the sealing member. Secondly there is provided a bleed hole (15) at the upper end of the plunger, whereby the air is allowed to escape. Thirdly, there is provided on or more grooves (16) in the periphery of the plunger seal so that air is allowed to be released, thereby reducing the pressure in the plunger and hence the possibility of splashback.
La présente invention a trait aux moyens de contrôle de la rétraction d~une seringue de sécurité auto-rétractable pour minimiser les éclaboussures ou les giclures. L~extrémité d~un piston creux (11) est couverte par un élément d~étanchéité qui, après rétraction, se trouve délogé de sorte que l~assemblage d~aiguille et l~élément d~étanchéité pénètrent le piston creux. L~invention concerne trois procédés selon lesquels l~auto-rétraction est contrôlée. Premièrement, le cône, selon l~invention, situé à l~intérieur du piston creux entraîne une résistance variée du mouvement de l~élément d~étanchéité. Deuxièmement, un trou de prélèvement (15), selon l~invention, situé à l~extrémité supérieure du piston permet à l~air de s~échapper. Troisièmement, une ou plusieurs rainures (16), selon l~invention, à la périphérie de l~élément d~étanchéité du piston permettent à l~air de s~échapper, diminuant ainsi la pression dans le piston et donc la possibilité d~éclaboussures.
Walsh Allan
Walton Graeme Francis
Borden Ladner Gervais Llp
Global Medisafe Holdings Limited
Global Medisafe Holdings Pty Limited
LandOfFree
Controlling the retraction of a needle in an auto... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Controlling the retraction of a needle in an auto..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Controlling the retraction of a needle in an auto... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1856676