Surgery – Means for introducing or removing material from body for... – Material introduced into and removed from body through...
Patent
1987-12-21
1990-02-27
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Material introduced into and removed from body through...
604 35, 604 39, 604264, 604283, A61M 700
Patent
active
049042386
ABSTRACT:
A hand-held cannula assembly for irrigating and aspirating opthalmic surgical sites includes as 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. The irrigation/aspiration tip exterior is made to be smooth, protrusionless, unitary and one-piece in design to afford a minimum in tissue tearing at the surgical site, while also allowing improved irrigation fluid flow a the site.
REFERENCES:
patent: 3765420 (1973-10-01), Felczak
patent: 3889046 (1975-06-01), Oberdier
patent: 3929126 (1975-12-01), Corsaut
patent: 3994297 (1976-11-01), Kopf
patent: 4011869 (1977-03-01), Seiler, Jr.
patent: 4069814 (1978-01-01), Clemens
patent: 4294251 (1981-10-01), Greenwald et al.
patent: 4316465 (1982-02-01), Dotson, Jr.
patent: 4377897 (1983-03-01), Eichenbaum et al.
patent: 4382618 (1983-05-01), Grisebach
patent: 4428748 (1984-01-01), Peyman et al.
patent: 4493696 (1985-01-01), Uldall
patent: 4548597 (1985-10-01), Nelson
patent: 4553957 (1985-11-01), Williams et al.
patent: 4578059 (1986-03-01), Fabricant et al.
patent: 4652255 (1987-03-01), Martinez
Alcon Laboratories Inc.
Cermak Adam J.
Rosenbaum C. Fred
LandOfFree
Irrigation/aspiration handpiece does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Irrigation/aspiration handpiece, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Irrigation/aspiration handpiece will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-170966