Claims
- 1. A method of producing a surgical knife, comprising the following steps of:
forming a flat surface of the surgical knife with a predetermined thickness; applying an anti-reflection treatment using a sandblasting process to the flat surface; and forming a cutting edge around the flat surface.
- 2. A method of producing a surgical knife, comprising the following steps of:
flattening an end portion of a rod material and cutting off an unwanted portion of the rod material; forming flat surfaces of the surgical knife of predetermined thickness by grinding the flattened end portion at both upper and lower surfaces; applying an anti-reflection treatment using a sandblasting process to the flat surface; and forming a cutting edge around the flat surfaces.
- 3. A method of producing a surgical knife as defined in claim 1, prior to said step of applying the anti-reflection treatment, said method further includes a step of masking a portion of the flat surface thereby avoiding the anti-reflection treatment on the masked portion.
- 4. A method of producing a surgical knife as defined in claim 3, wherein said masked portion on the flat surface includes a scale indicating a distance from a tip of the surgical knife.
- 5. A method of producing a surgical knife as defined in claim 3, wherein said masked portion on the flat surface includes characters indicating an attribute of the surgical knife.
- 6. A method of producing a surgical knife as defined in claim 1, wherein said flat surface includes a rough machined surface having a relatively rough surface at an inside of the cutting edge.
- 7. A method of producing a surgical knife as defined in claim 6, wherein a width of the cutting edge measured horizontally is about 0.15 mm, and a width of the rough machined surface measured horizontally is about 0.35 mm.
Parent Case Info
[0001] This is a continuation-in-part of U.S. application Ser. No. 08/643,351, now abandoned.
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
08643351 |
May 1996 |
US |
Child |
10439921 |
May 2003 |
US |