【Features】
1. In order to facilitate observing the shape of lumbar, the place of the L1 and L2 is uncovered.
2. L3, L5 are function features, have obvious surface marker, easy to recognizes
3. Can be carried out the following operations: 1.General anesthesia 2. lumbar hemp 3.Epidural anesthesia  4. sacral anesthesia
4. The needle has the feeling of block. Once the related parts, injection will have a empty feeling at the same time can simulate cerebrospinal fluid flow.
5.The model can puncture of the vertical and horizontal puncture.