×

Puncture needle and puncture device

  • US 9,265,454 B2
  • Filed: 03/16/2011
  • Issued: 02/23/2016
  • Est. Priority Date: 03/30/2010
  • Status: Expired due to Fees
First Claim
Patent Images

1. A puncture needle constituted of a resin material, the puncture needle comprising:

  • an elongated main body having a sharp needlepoint at a distal end thereof; and

    at least three cutting parts provided so as to project from the elongated main body to a direction perpendicular to a central axis of the elongated main body, extending along the central axis, and arranged around the central axis,wherein each of the at least three cutting parts has a distal portion and a proximal side with respect to the distal portion, and both side surfaces of at least a part of the proximal side are curved in an outward direction with respect to the cutting part and convexly curved with respect to the central axis, andwherein adjacent cutting parts in the at least three cutting parts are arranged so as to be disposed in different positions with respect to the central axis, so that the adjacent cutting parts make an incision on a biological surface in a time difference.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×