Professional and standardized renal puncture can effectively prevent tumor implantation or metastasis because the outer layer of the needle core is designed to protect the cannula, which encloses the tumor tissue inside the core after excision, isolating the opportunity for contact between tumor tissue and normal tissue and reducing the possibility of tumor “implantation”.
On the other hand, the puncture needle is very thin and does not easily damage the thicker blood vessels, making it less likely that the lesion will bleed after puncture, usually with minimal or no bleeding, greatly reducing the likelihood of tumor cells “slipping” through the blood vessels.
With improved puncture techniques, the success rate of a single hit is also very high, usually taking only about 10 minutes for a single puncture, which also reduces the likelihood of excessive bleeding or increased implantation with more punctures.