Safe injection structure and safe injection needle The safety needle structure includes: the needle base, the first end for fixing the needle； the needle handle is fixed at the second end of the needle base； the second end and the second end of the needle are fixed on the needle.A plurality of sliding components are cylindrical and contain two open and cathode. The sliding part in the deepest stratum is covered by the bottom of a sliding needle. The total length of these sliding parts is greater than the total length of the needle. The first blocking mechanism can limit the possible separation between the innermost sliding part and the bottom of the needle.This is also true in many sliding parts The second blocking device is on the handle of the needle and the innermost sliding part. This second blocking mechanism limits the relative rotation between the innermost sliding part and the handle of the needle. By covering a plurality of sliding parts at the bottom of the needle on the layer, the safety can be enhanced and the pain of the patient can be reduced.At the same time, the position of the second blocking device makes the sliding part at the innermost layer unable to rotate at the bottom of the needle head, thus making it easier to operate.Una estructura para punción segura y una aguja para infusión intravenosa de punción segura. La estructura para punción segura comprende: una base de la aguja, que tiene un primer extremo que se utiliza para fijar la cabeza de la aguja； un mango de la aguja que se fija en un segundo extremo de la base de la aguja； múltiples componentes deslizantes que son cilíndricos y contienen dos extremos abiertos y anidados. El componente deslizante que se encuentra en la capa más interna es cubierto con un movimiento deslizante en la base de la aguja. La longitud total de dichos componentes deslizados es mayor a la longitud de la cabeza de la aguja. Un primer mecanismo de bloqueo puede limitar la posible separación entre el componente desl
