Injection system

Injection systems and methods of using the same are described herein. Each injection system may include one, two, or more needles, wherein each needle is configured to move the needle between an injection position and a retracted position to deliver inoculant. The injection needles are rotatable about a stent axis extending through the injection axis along which each needle moves as it moves between its injection position and its retracted position. An injection needle in a system including two or more injection needles may be advanced from a retracted position to an injection position at thesame or different times. 本文描述了注射系统及其使用方法。每个注射系统可以包括一个、两个或多个针，其中每个针配置成将针在注射位置和缩回位置之间运动以输送接种剂。注射针可以围绕支架轴线旋转，该支架轴线延伸通过注射轴线，每个针在其注射位置和缩回位置之间运动时沿着该注射轴线运动。包括两个或多个注射针的系统中的注射针可在相同或不同的时间从缩回位置推进到注射位置。