New-model ultrasonically activated shears for hemostatic sectioning during video-assisted thoracic surgery.

During video-assisted-thoracic surgery (VATS), bleeding limits the field of view and requires frequent exchange of surgical instruments through ports, complicating the surgical procedure. The poor video view also increases the risk of vessel injury. Attention must be paid to hemostasis to achieve safe, smooth VATS. The Harmonic Scalpel (HS) is able to grasp and divide tissues while sealing small vessels, which often cause bleeding during electrocautery, and lymphatic vessels. We obtained experience using a new model of HS, which appears effective for separating membranous or streak adhesions, cutting pulmonary parenchyma, and dividing lymphatic tissues. Compared to previous models, it allows superior handling during VATS. Tissue holding with this HS is greatly improved.