Low-power tissue sealing device and method

An electrosurgical vessel sealing system, comprising:

• a power supply configured for generating non-pulsing radiofrequency (RF) power having an output voltage and an output current;
• a vessel sealing device including an end effector;
• and
• control circuitry configured to control delivery of the non-pulsing RF power to the end effector for a limited period of time, wherein the end effector is configured to grasp and seal a portion of a blood vessel by conducting the non-pulsing RF power through the blood vessel portion;
• wherein the limited period of time is no greater than 5 seconds and begins upon delivery of the non-pulsing RF power to the blood vessel portion, and
• wherein the control circuitry is configured to hold the output current under 2 Amperes root mean square (RMS), and to hold the output voltage under 100 Volts RMS, respectively, throughout the limited period of time.