| 摘要 |
A winged angled needle assembly ( 1 ) has a hub ( 3 ) to which a proximal end portion ( 2 '') of an angled needle ( 2 ) having a sharpened tip portion ( 2 ') is joined and a pair of wings ( 4 ) attached to both sides of the hub ( 3 ) and further includes a fixing member ( 5 ) attached so as to support the wings and an extensible, contractible needle guard ( 6 ) disposed between the hub ( 3 ) and the fixing member ( 5 ) so as to connect these two members. The guard ( 6 ) extends in the direction from the proximal end portion ( 2 '') to the sharpened tip portion ( 2 ') of the angled needle ( 2 ) when extended, so that the tip portion ( 2 ') can be encased in said guard ( 6 ) simultaneously with pulling the angled needle ( 2 ) out of an implanted port. The guard ( 6 ) has exposure prevention means attached thereto and is externally stopped, so that the sharpened tip portion ( 2 ') is kept from exposing once it is encased in the guard. The angled needle ( 2 ) can have a length as required regardless of the length of the wings. The fixing member ( 5 ) supports the wings opened to be coplanar with each other, serves to stably fix the winged angled needle assembly ( 1 ) to an implanted port in an installed state and also works as a support for pulling the angled needle ( 2 ) out of the port, so that the winged angled needle assembly ( 1 ) is improved considerably in operability and can hence minimize the mental stress of a patient.
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