Patent ID: 8911405
Filing Date: 2014-12-16
Classification: A61M

Abstract:
1. A needle device comprising: an inner hub with a needle attached to a tip thereof, the inner hub having a through-hole penetrating the inner hub in a radial direction, the through-hole having a first end opening and a second end opening; a cylindrical body housing the inner hub; first and second recessed portions formed on an outer surface of the hub, the first and second recessed portions being connected by the first end opening of the through-hole; and third and fourth recessed portions formed on the outer surface of the hub, the third and fourth recessed portions being connected by the second end opening of the through-hole, wherein the first and fourth recessed portions are separated by at least a first separator surface, and the second and third recessed portions are separated by at least a second separator surface, and wherein the first recessed portion includes a portion whose depth becomes gradually shallower in a direction from the first end opening of the through-hole to the first separator surface, the second recessed portion includes a portion whose depth becomes gradually shallower in a direction from the first end opening of the through-hole to the second separator surface, the third recessed portion includes a portion whose depth becomes gradually shallower in a direction from the second end opening of the through-hole to the second separator surface, and the fourth recessed portion includes a portion whose depth becomes gradually shallower in a direction from the second end opening of the through-hole to the first separator surface.