Bipolar devices can seal vessels up to what size?

Bipolar devices can seal vessels up to what size?

• A. 7 mm
• B. 3 mm
• C. 5 mm
• D. 9 mm

Answer: (A)

Understanding this concept helps you choose the right tool for the job in laparoscopy. Bipolar vessel-sealing devices work by clamping the vessel and delivering energy that denatures the proteins in the vessel wall, creating a continuous coagulum that seals the vessel. The energy delivery is tightly controlled so the seal is reliable up to a certain diameter. For most standard bipolar sealers, the largest vessel size that can be safely sealed is seven millimeters. Sealing larger vessels risks an incomplete seal or leak, since there’s more tissue to fuse and thicker walls that may not achieve a durable closure. So seven millimeters is the practical upper limit. Three or five millimeters are smaller vessels and can be sealed, but they aren’t the maximum capability, while nine millimeters exceeds typical device specifications and isn’t considered safe for standard bipolar seals.

Understanding this concept helps you choose the right tool for the job in laparoscopy. Bipolar vessel-sealing devices work by clamping the vessel and delivering energy that denatures the proteins in the vessel wall, creating a continuous coagulum that seals the vessel. The energy delivery is tightly controlled so the seal is reliable up to a certain diameter. For most standard bipolar sealers, the largest vessel size that can be safely sealed is seven millimeters. Sealing larger vessels risks an incomplete seal or leak, since there’s more tissue to fuse and thicker walls that may not achieve a durable closure. So seven millimeters is the practical upper limit. Three or five millimeters are smaller vessels and can be sealed, but they aren’t the maximum capability, while nine millimeters exceeds typical device specifications and isn’t considered safe for standard bipolar seals.