Medical scalpel
AssigneeMani, Inc.
InventorsKanji Matsutani, Masahiko Saito
Life of this patent
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Abstract
The present invention relates to a medical scalpel for incising a spherical biological tissue comprising a shank and a planar blade portion integrated with the shank. The planar blade portion has a first face and a second face opposed in parallel as a whole with each other. The planar blade portion has a pointed end to thereby show a reverse-V profile and has, on both sides of such pointed end, an edge in parallel as a whole with the first face and the second face, the blade portion being formed so as to have a ratio of the partial thickness thereof on one side of a virtual flat plane surrounded by said edge to the total thickness thereof within a range of from 75 to 93%.
Claims6
A medical scalpel for incising a spherical biological tissue comprising:
- a shank;
- and
- a planar blade portion integrated with said shank, said planar blade portion comprising:
- a first face having a first horizontal plane;
- a second face having a second horizontal plane, at least one of said first face and second face being formed flat;
- and
- a pointed end;
- said planar blade portion having an edge extending continuously in parallel as a whole with said flat first face or said second face from one side portion of said planar blade via said pointed end, said edge defining a virtual flat plane,
- a partial thickness defined as the distance between the virtual flat plane and the first horizontal plane of said planar blade portion, and
- a total thickness defined as the distance between the first horizontal plane and the second horizontal plane,
- wherein said planar blade portion is formed so as to have a ratio of the partial thickness thereof on one side of a virtual flat plane surrounded by said edge to the total thickness thereof within a range from 75 to 93%.
Dependencies are inferred from the claim text.