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US 2019/0125981 A1Published application
Medical puncture needle and method of manufacturing puncture needle
AssigneeTerumo Kabushiki Kaisha
InventorsTetsuya OYAUCHI, Daisuke NISHIUCHI
Life of this patent
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Abstract
A medical puncture needle includes an end portion including a needle tip; and a main body portion contiguous with the end portion, having a substantially circular cross-sectional outer shape. The end portion includes a first bevel formed by a curved surface, the bevel having an angle that gradually decreases toward the needle tip in an axial direction, in a cross-section orthogonal to the axial direction, relative to an imaginary plane that extends along an axis of the main body portion.
Claims19
A method of manufacturing a medical puncture needle comprising:
- providing a linear member having a substantially circular cross-sectional outer shape;
- and
- forming a first bevel at an end portion of the linear member by machining the linear member while (i) rotating the linear member about an axis of the linear member in a first rotation direction, and (ii) moving the linear member in a first direction that is inclined by a predetermined angle relative to the axial direction of the linear member.
Dependencies are inferred from the claim text.