Patent ID: 6224576
Filing Date: 2001-05-01
Classification: A61B,A61M

Abstract:
A safety device for phlebotomy needles comprising:a phlebotomy barrel having a first female connector which threadably receives a complementary first male threaded connector of a phlebotomy needle hub assembly, said first female threaded connector further comprising a proximally disposed locking member which slidably engages and thereby resists rotation of a portion of the phlebotomy needle hub assembly as said phlebotomy needle hub assembly is being threadably affixed to said phlebotomy barrel;the phlebotomy needle hub assembly comprising:a phlebotomy needle having a forward, distally disposed sharpened tip and a rear, proximally disposed sharpened tip;a needle hub in which said phlebotomy needle is firmly affixed, said hub comprising:the first male threaded connector part having a diameter and pitch which is compatible with being threadably affixed to said first female barrel connector; anda second female threaded connector part disposed within said first male connector part, said second female threaded connector part having a diameter which is smaller than the first male connector part and a pitch which is substantially the same as the first male threaded connector part;a rear needle shield comprising a second male threaded connector part having a diameter and pitch which corresponds to the hub assembly second female threaded connector part and a rear shield having a length which protectively extends about and beyond the proximal sharpened tip when the phlebotomy needle hub assembly is disconnected from said phlebotomy barrel;said rear needle shield further comprising a fitting which is slidably displaced into said locking member when connection is made between the first male and female threaded connectors thereby causing said rear needle shield to resist rotation relative to the phlebotomy barrel as the rear needle assembly is threadably engaged with said phlebotomy barrel, resulting in said second male connector part being threadably engaged with the second female connector effectively shortening the rear needle assembly to bare the rear needle tip.