METHODS OF FABRICATING COMPLEX BLADE GEOMETRIES FROM SILICON WAFERS AND STRENGTHENING BLADE GEOMETRIES
    1.
    发明公开
    METHODS OF FABRICATING COMPLEX BLADE GEOMETRIES FROM SILICON WAFERS AND STRENGTHENING BLADE GEOMETRIES 审中-公开
    方法用于从硅晶片复合刀片槽型和剑几何形状的加固

    公开(公告)号:EP1751790A2

    公开(公告)日:2007-02-14

    申请号:EP05758045.8

    申请日:2005-04-29

    IPC分类号: H01L21/302

    摘要: Ophthalmic surgical blades are manufactured from either a single crystal or poly-crystalline material, preferably in the form of a wafer. The method comprises preparing the single crystal or poly-crystalline wafers by mounting them and etching trenches into the wafers using one of several processes. Methods for machining the trenches, which form the bevel blade surfaces, include a diamond blade saw, laser system, ultrasonic machine, a hot forge press and a router. Other processes include wet etching (isotropic and anisotropic) and dry etching (isotropic and anisotropic, including reactive ion etching), and combinations of these etching steps. The wafers are then placed in an etchant solution which isotropically etches the wafers in a uniform manner, such that layers of crystalline or poly-crystalline material are removed uniformly, producing single, double or multiple bevel blades. Nearly any angle can be machined into the wafer, and the machined angle remains after etching. The resulting radii of the blade edges is 5-500 nm, which is the same caliber as a diamond edged blade, but manufactured at a fraction of the cost. A range of radii may be 30 to 60 nm, with a specific implementation being about 40 nm. The blade profile may have an angle of, for example, about 60 . The ophthalmic surgical blades can be used for cataract and refractive surgical procedures, as well as microsurgical, biological and non-medical, non-biological purposes. Surgical and non-surgical blades and mechanical devices manufactured as described herein can also exhibit substantially smoother surfaces than metal blades.

    SYSTEM AND METHOD FOR THE MANUFACTURE OF SURGICAL BLADES
    2.
    发明公开
    SYSTEM AND METHOD FOR THE MANUFACTURE OF SURGICAL BLADES 有权
    用于生产手术刀

    公开(公告)号:EP1490191A1

    公开(公告)日:2004-12-29

    申请号:EP03744621.8

    申请日:2003-03-10

    IPC分类号: B21K11/00

    摘要: A method for manufacturing surgical blades (2402) from either a crystalline or poly-crystalline material, preferably in the form of a wafer (202), is disclosed. The method includes preparing the crystalline or poly-crystalline wafers by mounting them and machining trenches into the wafers. The methods for machining the trenches, which form the bevel blade surfaces, include a diamond blade saw (502, 504, 506, 508), laser system (900), ultrasonic machine (100), and a hot forge press (1052, 1054). The wafers are placed in an etchant solution (1402) which isotropically etches the wafers in a uniform manner, such that layers of crystalline or poly-crystalline material are removed uniformly, producing single or double bevel blades (20A-G). Nearly any angle can be machined into the wafer which remains after etching. The resulting radii of the blade edges is 5-500 nm, this is equivalent to a diamond edged blade manufactured at a fraction of the cost.