Rotating stylus cystitome
Patent 4885004 Issued on December 5, 1989. Estimated Expiration Date: 
April 25, 2009. 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.
April 25, 2009. 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 3922784 Cauterizing tool for ophthalmological surgery Surgical instrument for cutting tissue, in particular cartilage Trephine and method Patent #: 4763651 InventorApplicationNo. 344414 filed on 04/25/1989US Classes:604/22, With means for cutting, scarifying, or vibrating (e.g., ultrasonic, etc.) tissue30/317Pull typeExaminersPrimary: Thaler, Michael H.Attorney, Agent or FirmForeign Patent References
International ClassA61B 017/32AbstractNovel surgical instruments for cutting soft tissues, and the like, are provided. The instruments include an elongated shaft having a cutting member rotatably mounted to the shaft and disposed to slide against a substantially planar surface of the shaft. The stylus and planar surfaces are disposed to provide smooth rotating action to the cutting instrument during such surgical procedures as cataract operations. The instruments also preferably include cutting blades having blade faces forming acute angles of less than 50°, for providing sharp cutting surfaces even when the instruments are tilted by a surgeon while accessing tight surgical areas.Other References
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