| 摘要 |
In the method suitable for tissue fusion or coagulation after the commencement of treatment of the tissue, i.e., after completion of a first phase, a second phase is commenced, during which the biological tissue is treated with moderate energy for a certain specified process time. The specification of a functional relationship between the tissue resistance and the output voltage of a supplying source enables the process in phase II to not fall below a minimum treatment time, avoiding premature drying-out of the tissue. A sufficient and reliable bonding of the participating proteins in a moist milieu is reached. |
| 主权项 |
1. A method of tissue fusion or coagulation by at least one electrode connected to an electrical source that is also connected to a counter-electrode, said method comprising:
determining, on an ongoing basis, an electrical tissue resistance that results between the electrode and the counter-electrode; and controlling an output voltage delivered by the electrical source based on the determined tissue resistance between the electrode and counter-electrode, wherein a functional relationship is specified for controlling the output voltage as a function of tissue resistance, the functional relationship being given by:ua=u0-u0(Ra·i0u0)N where N is a characteristics exponent and is a positive or negative number that is not zero, ua is the output voltage, u0 is the open-circuit voltage, i0 is the reference current, and Ra is the tissue resistance. |
