What are the structural characteristics of medical puncture needles?

Radio frequency puncture needle and radio frequency trocar are one-time use sterile products, which are used together with radio frequency temperature-controlled thermocoagulator. For puncture during radiofrequency thermocoagulation of tissues such as nerves and muscles. Instructions for use Under sterile conditions, remove the RF trocar from the RF puncture needle. Before use, ensure that the length and diameter of the surgical electrode are suitable for the length of the RF trocar. You can refer to the nominal specifications and dimensions in the manufacturer's manual of the RF temperature-controlled fuser. If unsure, please remove the insert core in the trocar of the RF thermocoagulation electrode from the needle tube, and insert the electrode into the needle tube for verification. At this time, if the top of the electrode has just come out of the needle tube and is located in the middle of the bevel of the end of the needle tube, and the electrode is not obviously loose, the electrode is considered suitable. Determine if the insert is properly mated to the needle cannula. Perform percutaneous puncture using a radiofrequency thermocoagulation electrode trocar until the tip of the cannula reaches the target location. Gently remove the insert from the cannula and insert the surgical electrode.

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