Single-use disposable syringe

Details Single-use disposable syringe Single-use disposable syringe

1989-06-01

1990-09-11

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604132, 604204, 222 95, 222107, 222215, A61M 518, A61M 532

Patent

active

049558714

ABSTRACT:
A single-use disposable syringe. In the syringe, a reservoir is formed of two sheets of thermoplastic material having expanded central portions that form a pair of convex domes. Both of the domes are compressible, and a connecting member spaces apart the domes. In response to complete compression of both of the central portions together, the reservoir substantially collapses and each of the domes becomes concave to prevent the reservoir from being reformed and to prevent reuse of the syringe. After partial compression of both of the central portions together and partial collapse of the reservoir, the central portions expand to reform the reservoir and draw fluid into the reservoir, thereby aspirating a hypodermic needle.

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