Indwelling needle structure

摘要

PPROBLEM TO BE SOLVED: To prevent blood vessel capturing work by an indwelling needle (outer needle) from being easily affected by the experience and ability of a doctor or the like, and to safely process a metal needle (inner needle) after capturing the blood vessel on the scene. PSOLUTION: The indwelling needle structure comprises: an indwelling needle main body (10) provided with the outer needle (11) for communicating the blood vessel of a patient and transfusion; an inner needle body (30) provided with a metallic inner needle (31) positioned on the inner side of the outer needle (11) so as to capture the blood vessel; a cylindrical inner needle housing body (40, 50) mounted on the indwelling needle main body (10) so as to house the inner needle body (30); and an operation body (20) engaged with the inner needle housing body (40, 50) and for performing an operation for housing the inner needle body (30). In a first engaged state, the indwelling needle main body (10) and the inner needle body (30) are positioned so that the tip of the inner needle (31) is slightly projected from the tip of the outer needle (11). In a second engaged state, they are positioned so that the tip of the inner needle (31) is hidden in the outer needle (11). The indwelling needle structure is formed so that the first engaged state is changed to the second engaged state, and from the second engaged state, the indwelling needle main body (10) and the operation body (20) and the inner needle housing body (40, 50) housing the inner needle body (30) are separated. PCOPYRIGHT: (C)2006,JPO&NCIPI