Patent ID: 6375640
Filing Date: 2002-04-23
Classification: A61M

Abstract:
A winged injection needle device comprising:an injection needle; a holder holding a base end of said injection needle and having a through hole being in communication with said injection needle; a tube through which a liquid medicine can flow; a connector connecting said holder and said tube so that they are in communication with each other; a cylindrical stretchable member capable of stretching or contracting in an axial direction, one end of the member being connected to at least one of said holder, said tube and said connector; and a cylindrical protector through which said injection needle passes, the protector being provided with a wing and being connected to another end of said stretchable member, wherein said stretchable member is stretched or contracted so as to slide said protector to change its position with respect to said injection needle within a range including a position in which a tip of said injection needle is completely contained in said protector, whereby an exposed length of said injection needle exposed from said protector can be changed into a desired length, and said stretchable member itself can maintain a certain stretched or contracted state.