Needle-puncture surgery is not the same as minimally invasive surgery, and there are significant differences in treatment. Needle-stick surgery is a diagnostic and therapeutic technique in which a puncture needle is inserted into a body cavity to extract secretions for testing, a gas or contrast agent is injected into the body cavity for contrast examination, or medication is injected into the body cavity. Minimally invasive procedures require special laparoscopic or thoracoscopic instruments. Needle procedures are both an invasive test that can help diagnose disease and a treatment. For example, the diagnosis can be confirmed by puncturing the suspicious area with a needle under ultrasound and taking samples for pathologic examination; liquid sodium vitrate is injected into the joint cavity to relieve pain. Minimally invasive surgery is a surgical method that differs from traditional surgery in that it is relatively less invasive; it includes endoscopic surgery, such as laparoscopy, thoracoscopy, gastroscopy, duodenoscopy, and colonoscopy, which has the advantages of a wide field of vision, less trauma, and faster postoperative recovery.