Joseph Hermes Kaal,Craig Stephen Thorley,Christopher Rafferty,Richard Sokolov,Huw Wallis,Steve Chi Truong,Ernesto Hueso
申请号：
MX2012004434
公开号：
MX347849B
申请日:
2008.07.02
申请国别(地区):
MX
年份:
2017
代理人:
摘要：
A retractable syringe, plunger and releasable needle retaining assembly are provided. The retractable syringe typically has a glass barrel and is prefilled with fluid contents before use. The releasable needle retaining system comprises a retractable needle, a needle seal, a retaining member and an ejector member that is operable to release the retractable needle from the retaining member. The retaining member has a mating surface for mounting to a complementary mating surface of an interior wall of a syringe barrel. The plunger comprises a plunger outer, a plunger rod frangibly connected to a controlling member, a spring and a unitary plunger seal capable of engaging the retractable needle, wherein the plunger rod, plunger outer and the controlling member co-operate to releasably maintain the spring in an initially compressed state. After delivery of fluid contents of the syringe, the plunger forces the ejector member to release the retractable needle from the retaining member. Decompression of the spring at the end of depression of the plunger facilitates retraction of the retractable needle when engaged with the unitary plunger seal. Dual locking systems prevent re-use of the syringe after needle retraction.La presente invención se refiere a un émbolo para una jeringa retráctil que comprende una aguja retráctil, el émbolo comprende un vástago de émbolo que es capaz de acoplar la aguja retráctil, una parte exterior del émbolo, un miembro de control conectado al vástago de émbolo y un resorte, en donde el vástago de émbolo, la parte exterior del émbolo y el miembro de control cooperan para mantener de forma liberable el resorte en un estado inicialmente comprimido antes de la retracción de la aguja retráctil, el miembro de control operable para facilitar el control de la velocidad de retracción de la aguja cuando se acopla con el vástago de émbolo.
