How does liver puncture biopsy needle do

Before the liver puncture biopsy needle, the necessity of the operation and adverse reactions should be explained to the patient and his family, and the patient should avoid nervous mood and satiety as much as possible. Then, ultrasonic positioning was performed, large vessels and bold tubes were avoided, puncture site disinfection was carried out, sterile gloves were worn, sterile towel was laid, lidocaine was aspirated with disposable syringe, local infiltration anesthesia was carried out at the puncture site, liver puncture needle was used to enter the liver under ultrasonic guidance. After the puncture location was appropriate, patients were instructed to hold their breath, avoid liver moving up and down with breathing, and liver tissue was rapidly extracted. The puncture needle was withdrawn, the puncture site was wrapped with sterile gauze, and the patient was told to lie flat for 6 hours.