Medical needle and medical device
First Claim
1. 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, andwherein 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.
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Accused Products
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.
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Citations
20 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. 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:
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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.
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Specification