Surgery – Instruments – Means for removing – inserting or aiding in the removal or...
Patent
1990-06-18
1992-05-12
Hafer, Robert A.
Surgery
Instruments
Means for removing, inserting or aiding in the removal or...
606127, 606161, A61B 1750
Patent
active
051123398
ABSTRACT:
A wedge-shaped probe for the removal of cataractous tissue from within the eye is provided. The wedge-shaped probe has polished distalmost edges so that there are no sharp edges and hence the risk of damage to the cornea, iris or posterior capsule when the probe is used is minimized. Furthermore, the sloped-shape of the probe tip permits effective scooping of cataract material within the eye. Likewise the wedge shape efficiently lifts cortical material off the posterior capsule and is useful for posterior capsule clean-up. The probe can also be used to remove soft cataract material without using ultrasound. Preferably, when the instrument is used for that purpose, a movable spatula element is mounted to the probe and its associated handpiece for crushing and removing material which becomes lodged in the aspiration opening. When operatively coupled to a source of ultrasonic energy, the probe can be used for phacoemulsification of cataract tissue. The probe of the invention is further characterized in that a small bore aspiration port is defined in the distalmost sloped end face. By decreasing the aspiration port size, higher aspiration levels can be used to draw cataract material to the tip and to obtain a good emulsification action.
REFERENCES:
patent: 1112982 (1914-10-01), Conine
patent: 2137635 (1938-11-01), Tyler
patent: 3352303 (1967-11-01), Delaney
patent: 3589363 (1971-06-01), Banko
patent: 3693613 (1972-09-01), Kelman
patent: 3942519 (1976-03-01), Shock
patent: 3958573 (1976-05-01), Wiley
patent: 3971382 (1976-07-01), Krasnov
patent: 3982541 (1976-09-01), L'Esperance
patent: 3990453 (1976-11-01), Douvas et al.
patent: 3994297 (1976-11-01), Kopf
patent: 3996935 (1976-12-01), Banko
patent: 4011869 (1977-03-01), Seiler
patent: 4223676 (1980-09-01), Wuchinich et al.
patent: 4368734 (1983-01-01), Banko
patent: 4445517 (1984-05-01), Felid
patent: 4516398 (1985-05-01), Wuchinich
patent: 4520816 (1985-06-01), Schachar
patent: 4522206 (1985-06-01), Whipple
patent: 4531934 (1985-07-01), Kossovsky et al.
patent: 4633866 (1987-01-01), Peyman et al.
patent: 4655743 (1987-04-01), Hyde
patent: 4666951 (1987-02-01), Bays
patent: 4678459 (1987-07-01), Onik
patent: 4694828 (1987-09-01), Eichenbaum
patent: 4735604 (1988-04-01), Watmough
patent: 4884341 (1989-12-01), Baertlien
Zelman, Photophaco frammentation, J Cataract Refract Surg.--vol. 13, May 1987.
Chambless, Neodymium: YAG laser anterior capsulotomy and a possible new application, AM Intra-Ocular Implant Soc J--vol. 11, Jan. 1985.
Hafer Robert A.
Ophthalmocare, Inc.
Rimell Sam
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