Patent ID: 9579495
Date: 2017-02-28
CPC Classifications: A61M,F16L

Claim:
1. A cover for a male member that is configured to cover at least a tip of a bar-shaped male member in which a flow channel for flow of a liquid is formed, the cover for a male member comprising: an outer circumferential wall that has a substantially tubular shape and is capable of elastic compression deformation in a central axis direction of the cover, and a head portion that is provided at one end of the outer circumferential wall and is passed through by the tip of the male member when the outer circumferential wall undergoes compression deformation, wherein the outer circumferential wall comprises a plurality of compression units arranged along the central axis direction, the plurality of compression units each undergo deformation due to compression force in the central axis direction, letting N be an integer of 2 or more, the plurality of compression units each have N thick portions formed at equiangular intervals with respect to the central axis, or have N thin portions formed at equiangular intervals with respect to the central axis, or have both N thick portions and N thin portions formed at equiangular intervals with respect to the central axis, the thickness of each of the plurality of compression units periodically changes in a circumferential direction, and a phase with respect to the central axis of the periodic change in thickness is shifted between two compression units that are neighboring in the central axis direction.