Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1996-06-26
1998-08-04
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604 22, 606167, A61M 532
Patent
active
057886792
ABSTRACT:
A phacoemulsification needle tip of the present invention has a continuous cutting edge formed at an inner surface of a cylindrical needle shaft. The cutting edge is formed by cutting the needle shaft at an angle and beveling the exterior surface of at least the forward portion of the needle. The beveling of the exterior surface of the needle tip moves the cutting edge from an exterior diameter of the needle to an interior diameter of the needle. The needle tip having the shape of the present invention has improved cutting ability, accuracy, and threading ability which are important for phacoemulsification procedures. The needle tip is also less likely to puncture sensitive membranes of the eye during surgery. The needle tip may also include an internal beveled surface at a trailing portion of the cutting edge.
REFERENCES:
patent: 2555493 (1951-06-01), Kirschbaum
patent: 3330268 (1967-07-01), Goldsmith
patent: 3589363 (1971-06-01), Banko et al.
patent: 3693613 (1972-09-01), Kelman
patent: 3805787 (1974-04-01), Banko
patent: 3930505 (1976-01-01), Wallach
patent: 4027668 (1977-06-01), Dunn
patent: 4689040 (1987-08-01), Thompson
patent: 4702260 (1987-10-01), Wang
patent: 4959049 (1990-09-01), Smirmaul
patent: 5162044 (1992-11-01), Gahn et al.
patent: 5213569 (1993-05-01), Davis
patent: 5254082 (1993-10-01), Takase
patent: 5286256 (1994-02-01), Mackool
patent: 5292310 (1994-03-01), Yoon
Wayne E. Fung, "Phacoemulsification", Clinical Ophthalmology, Chapter 7, vol. 6, pp. 1-16 1993.
LandOfFree
Phacoemulsification needle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Phacoemulsification needle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phacoemulsification needle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1172414