Medical needle and medical device
AssigneeLightnix, Inc.
InventorsMitsuo Fukuda, Seiji Aoyagi
Life of this patent
Estimating the term…
Abstract
One of the aspects of the present invention is to provide a medical needle extending along a predetermined direction and having a vertical cross-section taken along a plane perpendicular to the predetermined direction of which cross-sectional area varies based upon a distance from a needle tip. The medical needle includes a plurality of maximal points where the cross-sectional area of the vertical cross-section is locally maximal, and a plurality of minimal points where the cross-sectional area of the vertical cross-section is locally minimal. The vertical cross-section at the maximal point closest to the needle tip has the cross-sectional area not less than those at any other maximal points.
Claims20
A medical needle extending along a predetermined direction and having a vertical cross-section taken along a plane perpendicular to the predetermined direction of which cross-sectional area varies based upon a distance from a needle tip, the medical needle, comprising:
- a plurality of maximal points where the cross-sectional area of the vertical cross-section is locally maximal;
- and
- a plurality of minimal points where the cross-sectional area of the vertical cross-section is locally minimal;
- wherein the vertical cross-section at the maximal point closest to the needle tip has the cross-sectional area not less than those at any other maximal points, and
- wherein the vertical cross-section between the needle tip and the maximal point closest to the needle tip is gradually and continuously increased in accordance with the distance from a needle tip.
A medical device including a medical needle extending along a predetermined direction and having a vertical cross-section taken along a plane perpendicular to the predetermined direction of which cross-sectional area varies based upon a distance from a needle tip, the medical needle, comprising:
- a plurality of maximal points where the cross-sectional area of the vertical cross-section is locally maximal;
- and
- a plurality of minimal points where the cross-sectional area of the vertical cross-section is locally minimal;
- wherein the vertical cross-section at the maximal point closest to the needle tip has the cross-sectional area not less than those at any other maximal points, and
- wherein the vertical cross-section between the needle tip and the maximal point closest to the needle tip is gradually and continuously increased in accordance with the distance from a needle tip.
Dependencies are inferred from the claim text.