INJECTION HEAD FOR INJECTING FLUID SUBSTANCE AND PERMITTING MONITORING OF INJECTION SITE BEFORE INJECTION OF FLUID SUBSTANCE, AND SYRINGE COMPRISING SUCH HEAD

The invention relates to an injection head (10), for injecting a fluid substance, and a syringe comprising such a head, said head being characterized in that it has a connection body (11) continued bya hollow tube (15) intended to communicate with the outlet of the reservoir and having a distal end, and a needle (16) having a pointed distal end, the head additionally comprising means for controlling the relative movement of said needle (16) with respect to said hollow tube (15) between a puncturing position, in which the pointed end of the needle (16), which is extendable in the hollow tube (15), protrudes from the distal end of the hollow tube (15), and a position for monitoring and characterizing the liquid coming from the injection site, the pointed distal end of the needle (16) beingset back from the distal end of the hollow tube (15) in said position. 本发明涉及一种用于注射流体物质的注射头(10)以及包括这种注射头的注射器，所述注射头的特征在于具有连接体(11)，该连接体由旨在与储存器的出口连通并具有远端的中空管(15)和具有尖头远端的针(16)延续，所述注射头另外包括用于控制所述针(16)相对于所述中空管(15)在下列位置之间的相对移动的装置：穿刺位置，