Non-reusable syringe for medical purposes

Details Non-reusable syringe for medical purposes Non-reusable syringe for medical purposes

1993-07-30

1994-07-12

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604110, 604196, 604208, A61M 532, A61M 500

Patent

active

053284844

ABSTRACT:
A syringe comprises a cylindrical body (1), a plunger (11, 15) movable linearly in the body (1), a needle carrier (28) also movable linearly in the body (1) and relatively to the plunger (11, 15) and a needle (24). The needle (24) before the use of the syringe is disposed inside a watertight cylinder (1) and is mounted on the needle carrier through a coupling of the snap on type which makes possible its separation from the needle carrier. The body (1) of the syringe is obturated at its distal end by a closing member (4) provided with an elastomeric plug (9) which can be perforated by the needle. The needle carrier (28) and the distal closing member (4) are provided with a coupling (31, 10) which cannot disengage once engaged. The rear end of the needle (24) and the plunger (11, 15) have a snap on coupling (20, 26) which cannot disengage once engaged. The minimal distance between the plunger (11, 15) and the needle carrier (28) is determined by a member (29), the resistance of which to compression is lesser in the moist or wet state than in the dry state.

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