초록 ▼

An ultrasonic cone and method of construction for the emulsification of cataract lenses employed in a hand-held surgical aspirator having an angle of incidence q

An ultrasonic cone and method of construction for the emulsification of cataract lenses employed in a hand-held surgical aspirator having an angle of incidence q

대표청구항 ▼

An ultrasonic cone for the emulsification of a cataract lens comprising, in combination: fastening means for connecting said cone to an ultrasonic driver unit; securing means located adjacent said fastening means on said cone for mechanically aligning said cone to and securing said cone against a ho

An ultrasonic cone for the emulsification of a cataract lens comprising, in combination: fastening means for connecting said cone to an ultrasonic driver unit; securing means located adjacent said fastening means on said cone for mechanically aligning said cone to and securing said cone against a horn of said driver unit; a hub in mechanical communication with said securing means for facilitating the installation and removal of said cone from said horn; a shaft connected to said hub for transmitting a plurality of ultrasonic vibrations to a distal end of said shaft for mechanically communicating with and for emulsifying said cataract lens, said shaft being cylindrical; and a transition radius of curvature located intermediate said hub and said shaft for blending a sectional dimension of said hub with a sectional dimension of said shaft, said transition radius of curvature having an angle incidence no greater than 30°with said hub for eliminating structural erosion along said transition radius of curvature at vibration frequencies greater than forty kilohertz and for horizontal stroke lengths of said shaft exceeding the range of four-to-five thousandths of an inch.