< Topic >You remove to the injection instrument and are installed unrestrictedly, or the needle protective device which can install is offered.SolutionsAs for the needle protective device, a) the injection needle (1), the needle injection division where the injection needle (1) extends to the point (1a) with, the needle connection division where the injection needle (1) extends to the basic edge (1b) with the injection needle which it has (1) and b) the needle holder (2), needle injection division (1a) has extended to advanced direction from this needle holder, needle connection division (1b) the needle holder which is extended to basic edge direction the advanced needle protective element which movement unrestrictedly is connected (5) in (2) and c) needle holder (2), as for this advanced needle protective element, release positionBe able to move to protected location to empty advanced direction, the aforementioned advanced needle protective element (5), at release position, needle injection division (1a) is arranged in the rear, at protected location, the needle injection division to which the injection needle (1) includes the point (1a) with is piled up, advanced needle protective element (5) and d) the needle holder in (2) movement the basic edge needle protective element which is connected unrestrictedly (7 27) being, from release position be able to move to protected location this advanced needle protective element, in basic edge direction, the aforementioned basic edge needle protective element (7 27), at release position, needle connection division (1b) it is arranged in the rear, at protected location, the needle connection division to which the injection needle (1) includes the basic edge (1b) with it is piled up, basic edge needle protective element (7 27) with, e) from protected location basic edge needle protective element to release position (7 27) the block device which blocks movement (9, 15 and 8 9, 28 and 30) with it includes.< Selective figure >Fig
