Medical instruments and apparatus; injection needles for medical purposes; blood collection needles; needles for medical purposes; winged needles for venous injection; arterial venous fistula needle; dental needles; spinal needles; needles and needle sets for blood access; lancets and lancing devices; syringes for medical purposes; medical screw connections; pumps for medical purposes; infusion apparatus for medical purposes; medical catheters; intracardiac catheters; cannulae; guidewires for medical purposes; medical tubing; 3-way stopcocks; blood collection tubes; blood transfusion apparatus.