Design patent：ZL 2013 3 0106050.4
Patent of invention：ZL 2013 1 0122433.4
PCT patent：PCT/CN2014/074716
【Size】
18G*3/4"，19G*3/4"，20G*3/4"，21G*3/4"，22G*3/4"，23G*3/4"，25G*3/4"，27G*3/4"
【Instruction】
It has a system of retraction and locking of the needle after use,protecting the professional health staff to handle the needle after use
and preventing the reuse of the product.

【Instruction】
Select the appropriate size and puncture vein;collect the blood with the holder(if have) and vacuum tube.After use,remove the product
form patient;hold the device with the thumb and forefinger,with the other hand,hold the vinyl tube between thumb and index finger
while pushing the safety forward until you hear the "clik" indicating that the needle is fully retracted and safety device is locked over
the needle.