Disposable safety syringe

Details Disposable safety syringe Disposable safety syringe

1991-07-10

1992-11-17

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604263, 604110, 128919, A61M 532

Patent

active

051639181

ABSTRACT:
A disposable safety syringe includes a barrel (1), an injection needle (4) fitted on the fore end of barrel (1), and a plunger (6) slidable in the barrel (1) from a syringe-filling utmost retracted position to a syringe emptying forwardmost position. The barrel is fitted with a manually driven stem (7) protruding from the rear end of barrel (1). A longitudinally slidable protective sleeve (12) is slidably fitted on the outside of barrel (1) so as to be movable from a retracted rest position in which the needle (4) is exposed into an advanced safety position in which the protective sleeve (12) extends around the needle (4) and entirely covers the same. A locking device (23, 25) is provided for automatically retaining in a not retractile manner the protective sleeve (12) to the barrel (1) in its advanced safety position.

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patent: 5106379 (1992-04-01), Leap
patent: 5114404 (1992-05-01), Paxton et al.
patent: 5116326 (1992-05-01), Schmidt
patent: 5120309 (1992-06-01), Watts
patent: 5120310 (1992-06-01), Shaw
patent: 5120311 (1992-06-01), Sagstetter et al.

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