Locking safety needle assembly

A safety needle assembly for secure mounting to an injection site of an intravenous set, the injection site including an injection portion, an outlet portion, comprising:

• a cannula assembly including a needle hub for mounting to a fluid delivery vehicle and a piercing element projecting distally from the hub;
• a protective shield defining a base portion mounted onto the needle hub, said shield defining a sheath portion projecting from and about the base a distance to at least partially envelop the piercing element, the sheath having a distal end defining a passage dimensioned to receive the injection portion of said injection site;
• and
• a latch pivotable about said protective shield for releasably locking the injection site within the shield, the latch comprising a pivot arm having an end pivotably connected to the protective shield, at least one shield locking member spaced at least a distance from the pivot for releasably engaging the latch with a portion of the shield, and at least one member spaced a second distance from said pivot for releasably engaging said injection portion.

A safety needle assembly for secure mounting to a straight-site of an intravenous fitting, the straight-site including an injection portion and an outlet portion, comprising:

• a cannula assembly including a needle hub for mounting to a fluid delivery vehicle and a needle cannula projecting distally from the hub;
• a protective shield defining a base portion mounted onto the needle hub, said shield defining a generally cylindrical sheath portion projecting from and about the base a distance to at least partially envelop the needle cannula, said sheath having a distal end defining a passage within the shield dimensioned to receive the injection portion of said straight site;
• and
• a latch pivotable about said protective shield for releasably locking the straight site within the shield, the latch comprising a pivot arm having an end pivotably connected to the protective shield, said latch further comprising at least one finger member spaced a distance from the pivot for releasably engaging the latch with a portion of the shield and at least one site engaging member spaced a second distance from the pivot for releasably engaging the straight site within the shield, said site engaging member including a flange portion disposed through a passageway defined by said sheath for lockingly engaging a lip portion of the straight site so as to prevent inadvertent withdrawal of the straight site from the shield.

A safety needle assembly for connection to an intravenous fitting, comprising:

• a piercing element securable to said intravenous fitting;
• a protective shield defining a base portion, the shield for disposition around said piercing element and including a sheath portion projecting from and about the base a sufficient distance to at least partially envelop the piercing element, the sheath having a distal end defining a passage dimensioned to receive at least a portion of said intravenous fitting therein;
• and
• a latch pivotable about said protective shield for releasably engaging the intravenous fitting within the shield, said latch comprising a pivot arm having an end pivotably connected to the protective shield, means for releasably engaging a portion of the shield spaced a distance from said pivotable end, and means for releasably locking a portion of said intravenous fitting in said shield, said means for releasably locking spaced a second distance from said pivotable end.