Stiffening agent of the inject inside vein causes change of blood-vessel phlogistic sex, made attenuate, out-of-the-way, produce fiber to change, this kind of method gets effective fast, apply to close hitch blood.

• 静脉内注射硬化剂造成血管炎性改变，使之变细、闭塞，发生纤维化，这种方法见效快，适用于紧急止血。