Ultrasonic scalpel depends on clinical medical technology and the improvement of disease diagnosis and treatment. As an important part of the hospital's surgical system, its surgical technology level depends mainly on developing and improving surgical technology. At present, the development trend of surgical technology is more and more towards minimally invasive, and endoscopic surgery is one of the important components of minimally invasive surgery. The main advantages of ultrasonic scalpel or harmonic blade used in clinical practice are small surgical trauma, quick postoperative recovery, and significantly shorter hospital stay. The postoperative pain is minor; surgical blood loss is reduced (90% of laparoscopic surgery has no bleeding); postoperative treatment is simple. It saves cost, shortens hospital stay to let patients return to work early, and reduces the burden of family care other benefits.
Although the ultrasonic scalpel has such significant advantages, it also requires higher requirements for the accuracy of endoscopic surgery, the surgical instruments, and the ability to handle blood vessels. The traditional electric knife (unipolar electric knife or bipolar electric knife) has a too wide heat conduction range, which can easily cause secondary damage to essential organs. Blood vessels and smoke affect the field of vision, which severely restricts the expansion of the scope of endoscopic surgery. Until the birth of the ultrasonic cutting hemostatic knife in 1996, the ultrasonic scalpel system was developed by leaps and bounds, making the minimally invasive surgical technology based on ultrasonic scalpels widely used in various surgical fields.
Ultrasonic scalpels are mainly used in ENT surgery, head and neck surgery, breast surgery, thoracic surgery, hepatobiliary surgery, abdominal surgery, minimally invasive surgery in urology and minimally invasive gynecological surgery, minimally invasive gynecological surgery include hysteromyomectomy, adnexectomy, ectopic pregnancy fallopian tube fenestration, total hysterectomy, pelvic lymph node dissection, etc. In gynecological surgery, the ultrasonic scalpel or harmonic knife can safely close the lymphatic vessels. Its minor lateral thermal damage can reduce the damage of the ureter, bladder, or other adhesion organs, make the treatment of pelvic adhesions safer, and can effectively protect the function of the ovaries. It reduces the functional damage of normal follicles. The cavitation effect facilitates opening the anterior and posterior lobes of the broad ligament and the bladder peritoneum reflex; the 5mm blood vessel closing capacity can safely handle the uterine artery and the ovary's proper ligament other ligaments.