Features：
1. Life size, each step of catheterization can be practiced
2. Precise anatomical structure, convenient observation
through transparent shell
3. Lifelike appearance, urethral canal length 18-20cm.
4. Male catheterization
① Realistic resistance feedback during process
②“Urine” flow out after catheter successfully enter
bladdercatheter, about 200ml
5. Bladder irrigation