Method and apparatus for disintegration of urinary concretions Patent #: 4178935
ApplicationNo. 06/451769 filed on 12/21/1982
US 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 means
ExaminersPrimary: Rosenbaum, C. Fred
Assistant: Kruter, J. L.
Attorney, Agent or Firm
International 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.