Flashback device for catheters

Details Flashback device for catheters Flashback device for catheters

1982-11-17

1984-12-11

Pellegrino, Stephen C.

Surgery

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

Treating material introduced into or removed from body...

604900, 128765, A61M 500

Patent

active

044876050

ABSTRACT:
Negative pressure to accelerate flashback is formed by selective deformation of an elastomeric bladder. The bladder and a next adjacent cam means are enclosed in a housing, penetrated by a slide or roller engaging the cam surface. As the slide or roller moves along the cam surface, the bladder is selectively deformed first to close, then to evacuate distally and then to reopen at a negative differential pressure.

REFERENCES:
patent: 1995218 (1935-03-01), Osterhout
patent: 2502866 (1950-04-01), Lust
patent: 3459183 (1969-08-01), Ring et al.

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