Apparatus for the fragmentation and aspiration of ocular tissue
Patent 4531934 Issued on July 30, 1985. Estimated Expiration Date: 
December 21, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 21, 2002. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3433226 3857387 3874372 Method and apparatus for disintegration of urinary concretions Patent #: 4178935 Inventors
AssigneeApplicationNo. 06/451769 filed on 12/21/1982US Classes:604/22, With means for cutting, scarifying, or vibrating (e.g., ultrasonic, etc.) tissue433/91, Having suction orifice604/27, Material introduced into and removed from body through passage in body inserted means604/35, With aspirating or vacuum removing means606/128With fragmenting meansExaminersPrimary: Rosenbaum, C. FredAssistant: Kruter, J. L. Attorney, Agent or FirmInternational ClassesA61F 9/007 (20060101)A61B 17/32 (20060101) A61M 1/00 (20060101) AbstractAn apparatus for the fragmentation and aspiration of ocular tissues consi of a controlled ultrasonic generator connected to a magnetostriction converter to produce mechanical ultrasonic vibrations transmitted therefrom to a hollow needle joined thereto. The end of the needle opposing the end connected to the magnetostriction converter is adapted to be brought into contact with the ocular tissue under fragmentation and comprises an end wall portion with a through opening having a diameter substantially between 1/3 and 2/3 of the diameter of a needle bore. The surface of the needle can be fashioned into a cone or a cylinder. | |
