Plunger for power injector angiographic syringe, and syringe com

Details Plunger for power injector angiographic syringe, and syringe com Plunger for power injector angiographic syringe, and syringe com

1989-01-19

1991-04-16

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604218, 128655, A61M 520

Patent

active

050079042

ABSTRACT:
A plunger having a generally converging distal portion, and a rear face on which is provided a coupling structure. The coupling structure is transversely engageable by, and transversely disengageable from, a driving mechanism of a power-driven angiographic syringe, and, one engaged, cannot be disengaged by rotation of the driving mechanism relative to the plunger in the absence of translational movement of the driving mechanism and plunger relative to one another. The coupling structure may include a rearwardly extending wall to which is joined a radially inwardly extending flange. The coupling structure may be generally C-shaped, with a continuously curved portion having an arc length not exceeding about 180.degree., and optionally may have tangentially extending end segments respectively joined to the continuously curved portions. Such plunger has utility in angiographic syringes of a type employed with power injector means which comprises a driving mechanism with a head engageable with the coupling structure of the plunger.

REFERENCES:
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patent: 4705509 (1987-11-01), Stade
patent: 4906231 (1990-03-01), Young
patent: 4991695 (1990-03-01), Lindner

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