Prostate biopsy
Prostate biopsy is used to examine patients with suspected cancer. Prostate biopsy precautions: 1. Basically the same as "surgical biopsy", the doctor performing the puncture must fully understand the medical history, be familiar with the X-ray image of the tumor site, and be able to analyze the tumor's parenchyma and pathologically representative sites. Familiar with the anatomy of the puncture site and the path of important blood vessels and nerves. To be good at finding the point of puncture, and to reach the tumor through the most direct and less invasive way, it is best to take the needle and take the material under the guidance of X-ray fluoroscopy or CT, ultrasound and other images. 2. Fully prepare special puncture needles for biopsy, their disinfection lists and instruments (cups or bottles for holding specimens, fixed preservation solution), etc. 3. Do the patient's ideological work well before the puncture, and strive for the cooperation of the patient. 4. Select a suitable needle for bone and soft tissue tumor biopsy: ① Ordinary thick puncture needle: 1.5 to 2 mm in diameter and 11 to 12 cm in length (or modified with a thick epidural anesthesia needle). The front end of the outer cannula is evenly zigzag to rotate and cut the tissue. The front end of the inner sleeve is slightly longer and sharper, which enhances the penetrating power of penetrating the tissue. After the core is pulled out, the back end of the outer sleeve is connected to 30-50ml. The syringe can suck the tissue cut from the front end; ②Silverman puncture needle, the outer diameter is 2 ～ 2.5mm, and the length is 11 ～ 12cm. It consists of three parts, the outer tube, the solid needle core, and the split needle core. The usage is basically the same, but the split needle core can clip pathological tissue. ③ The CCASCS biopsy instrument was designed by Hua Jinming et al. (1991). The system is similar in appearance to ordinary puncture needles. It has three layers of inner, middle and outer sleeves. The front end of the sleeve has serrations and side holes. Complete 6 functions including core, clamp, aspiration, spoon, cutting, and rotation scraper. The method of use is similar to the first two types of puncture needles.
