Irrigation/aspiration handpiece

Details Irrigation/aspiration handpiece Irrigation/aspiration handpiece

1983-05-03

1985-11-19

Rosenbaum, C. Fred

Surgery

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

Material introduced into and removed from body through...

604902, A61M 300

Patent

active

045539570

ABSTRACT:
A hand-held cannula assembly for irrigating and aspirating ophthalmic surgical sites includes an irrigation cannula circumscribed about an aspiration cannula and extending out through the forward end of the assembly from a reservoir for the irrigation fluid in the handle. Pressurized irrigation fluid is supplied to the reservoir through the rearward end of the handle and flows through openings in the irrigation cannula periphery into an annular flow passage between the two cannulas. An opening in the irrigation cannula issues the irrigation fluid at the surgical site. Aspiration fluid is drawn into the aspiration cannula which extends through the handle interior to an outflow opening at the rearward handle end.

REFERENCES:
patent: 3994297 (1976-11-01), Kopf
patent: 4069814 (1978-01-01), Clemens
patent: 4294251 (1981-10-01), Greenwald et al.
patent: 4316465 (1982-02-01), Dotson, Jr.

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