| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an injection needle capable of easily projecting and pulling back a puncture needle while surely fixing the projecting position of the puncture needle without changing the projection distance of the puncture needle during puncturing. <P>SOLUTION: The puncture needle projecting position fixing means includes: a puncture needle; an inner cylindrical body; an outer cylindrical body inserted with the inner cylindrical body; an inner tube grip at the proximal end of the inner cylindrical body; a puncture needle positioning means 6 at the inner tube grip; and an outer tube grip 5 having a guide groove for moving the puncture needle positioning means at the proximal end of the outer cylindrical body. The guide groove 7 a first groove 8 which is set at the distal end of the outer tube grip and extends an orthogonal direction to the axial line and fixes the puncture needle positioning means at the puncture needle projecting position, a second groove 9 fixing at a puncture needle storing position, and a third groove 10 extending linearly to the axial direction connecting the first and second grooves, so that the puncture needle projecting position fixing means is composed by positioning nearby the first groove and fitting the puncture needle positioning means together at the side surface of the third groove by insertion for fixing the projecting position of the puncture needle. <P>COPYRIGHT: (C)2010,JPO&INPIT |
