发明名称 |
Keratorefractive diamond blade and surgical method |
摘要 |
A keratorefractive surgical blade has opposing sides and first and second edges which intersect each other to form a point. The first edge is shaped to form a sharp cutting edge extending from the point a predetermined distance shorter than the distance from the base of a surgical incision to Bowman's membrane, a portion of the first edge adjacent to the sharp cutting edge being dull relative to the cutting edge. A method of performing keratorefractive surgery, includes the steps of: (a) plunging a cutting edge of a surgical blade into the cornea of a human eye at a point between the edge of the optical zone and the limbus at a controlled depth; (b) cutting an incision at said controlled depth along a relatively straight line between the optical zone and limbus; (c) shaping the profile of the incision by moving a cutting edge of a blade which is shorter than the distance from the base of the incision to Bowman's membrane, along the incision at substantially the same controlled depth of step (b); and (d) withdrawing the blade from the incision.
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申请公布号 |
US5423840(A) |
申请公布日期 |
1995.06.13 |
申请号 |
US19930083994 |
申请日期 |
1993.06.28 |
申请人 |
CHIRON VISION CORPORATION |
发明人 |
CASEBEER, J. CHARLES;RAE, CAROL A. |
分类号 |
A61F9/007;A61B17/32;A61F9/013;(IPC1-7):A61B17/32 |
主分类号 |
A61F9/007 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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