IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0154412
(2002-05-22)
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발명자
/ 주소 |
- Lieberman, David M.
- Grierson, Jonathon
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
19 인용 특허 :
1 |
초록
▼
Methods, and apparatus are disclosed for performing corneal ablation procedures of the eye (12) in a manner which does not interfere with the natural shape of the cornea or its orientation relative to the remainder of the eye, but which changes its surface curvature appropriately to achieve the requ
Methods, and apparatus are disclosed for performing corneal ablation procedures of the eye (12) in a manner which does not interfere with the natural shape of the cornea or its orientation relative to the remainder of the eye, but which changes its surface curvature appropriately to achieve the required correction of vision. Three preferred embodiments are described, which model the cornea to different degrees of accuracy. Once the model of the cornea is obtained (610, 620, 630), surface curvature is modified (650) to achieve the degree of correction in refraction that is necessary, as determined by an eye test of the patient. The modified model of the cornea is then utilized to control the removal of material from the surface of the cornea in a corneal ablation operation.
대표청구항
▼
Methods, and apparatus are disclosed for performing corneal ablation procedures of the eye (12) in a manner which does not interfere with the natural shape of the cornea or its orientation relative to the remainder of the eye, but which changes its surface curvature appropriately to achieve the requ
Methods, and apparatus are disclosed for performing corneal ablation procedures of the eye (12) in a manner which does not interfere with the natural shape of the cornea or its orientation relative to the remainder of the eye, but which changes its surface curvature appropriately to achieve the required correction of vision. Three preferred embodiments are described, which model the cornea to different degrees of accuracy. Once the model of the cornea is obtained (610, 620, 630), surface curvature is modified (650) to achieve the degree of correction in refraction that is necessary, as determined by an eye test of the patient. The modified model of the cornea is then utilized to control the removal of material from the surface of the cornea in a corneal ablation operation. ending outwardly of the minimum diameter portion of the outer surface of said outer flange, and comprising a first abutment surface facing toward a center of the outer surface and abutting the side-facing recess surface of the first recess in the exterior of said tire, and (iii) a web connecting said inner flange to said outer flange said web being integral with said outer flange such that said web, said outer flange, and said side flange comprise a unitary structure; and (c) as a separate and distinct element, a second side flange disposed against the first side of said outer flange and comprising a second abutment surface facing toward the center of the outer surface of the outer flange, said second side flange being removably mounted to said outer flange of said wheel, the second abutment surface abutting the side-facing recess surface of the second recess in the exterior of said tire, the lesser diameter portion of the outer surface of said outer flange having a relatively greater first width between a center line, extending through and centered along said web perpendicular to said lesser diameter portion, and a first side of the lesser diameter portion, which is disposed toward the first side of said outer flange, and a relatively lesser second width between the center line and a second side of the lesser diameter portion of the outer surface, which is disposed toward the second side of said outer flange. 2. A wheel assembly as in claim 1 wherein the cables are steel cables. 3. A wheel assembly as in claim 1, said wheel assembly comprising an outer surface thereof directed away from the axis of rotation of said wheel assembly, the outer surface of said tire being directed away from the axis of rotation of said wheel assembly, and wherein the outer surface of the tire defines the entirety of an outer surface of said wheel assembly which is directed away from the axis of rotation of said wheel assembly. 4. A wheel assembly as in claim 1, said wheel assembly tire being free from fasteners passing therethrough for affixation of said tire to said wheel. 5. A wheel assembly as in claim 1, said wheel assembly being free from adhesive at the wheel-tire interface. 6. A wheel assembly as in claim 1, said second side flange comprising an annular body having apertures therein, receiving fasteners removably affixing said annular body to the first side of said outer flange, and an annular leg extending from said annular body toward a central portion of the outer surface of said outer flange, between the outer surface of said outer flange and the inner surface of said elastomeric tire at the second recess. 7. An endless track drive system, said drive system comprising a prime mover, an endl
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