Prefilled, sterilized syringe with a new and improved plug

Details Prefilled, sterilized syringe with a new and improved plug Prefilled, sterilized syringe with a new and improved plug

1997-10-17

2000-11-07

Kennedy, Sharon

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604230, A61M 5315

Patent

active

061429775

ABSTRACT:
A prefilled medicinal syringe includes a cylinder with a proximal end, a distal end and an outlet. The syringe contains a medicine or a diagnostic agent which is ejected therefrom by a plug. The surfaces of the plug which touch the inside wall of the cylinder are preferably made of polytetrafluoroethylene (TEFLON.RTM.). Preferably the material of which the inside wall of the cylinder is made directly touches the TEFLON.RTM. surfaces of the plug. The plug has at least one sealing lip which forms an acute angle with the axis of the syringe and extends in a direction toward the distal end of the syringe. By so configuring the plug, the prefilled syringe may be autoclaved, stored for an extended time, and still function smoothly without leakage.

REFERENCES:
patent: 546603 (1895-09-01), Tagliabue
patent: 4500310 (1985-02-01), Christinger
patent: 5009646 (1991-04-01), Sudo et al.
patent: 5147328 (1992-09-01), Dragosits et al.
patent: 5256157 (1993-10-01), Samiotes et al.
patent: 5397313 (1995-03-01), Gross
patent: 5620423 (1997-04-01), Eykmann et al.
patent: 5713857 (1998-02-01), Grimard et al.
patent: 5735825 (1998-04-01), Stevens et al.

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