Methods for operating generator for digitally generating electrical signal waveforms and surgical instruments

A generator comprising:

• a processor;
• a memory in communication with the processor, the memory defining a first and second table;
• and
• an electrical output port;
• wherein the processor is configured to:
• retrieve information from the first table defined in the memory, wherein the information from the first table is associated with a first wave shape of a first electrical signal waveform for performing a surgical procedure;
• retrieve information from the second table defined in the memory, wherein the information from the second table is associated with a second wave shape of a second electrical signal waveform for performing a surgical procedure;
• deliver the first and second electrical signal waveforms for performing a surgical procedure to a surgical instrument via the electrical output port;
• wherein delivering the first and second electrical signal waveforms comprises at least one of:
• switching between the first and second electrical signal waveforms or synchronizing the first and second electrical signal waveforms;
• receive a feedback signal associated with tissue parameters;
• and
• based on the feedback signal, and while delivering the first and second electrical signal waveforms, determine whether to:
• switch from a first phase point of the first electrical signal waveform to a second phase point of the second electrical signal waveform and convert the second phase point to a first analog signal;
• or
• synchronize delivery of the first and the second phase points and convert the synchronized first and the second phase points to a second analog signal.

A generator comprising:

• a processor;
• a memory in communication with the processor, the memory defining a first and second table;
• and
• an electrical output port;
• wherein the processor is configured to:
• retrieve information from the first table defined in the memory, wherein the information from the first table is associated with a first wave shape of a first electrical signal waveform for performing a surgical procedure;
• retrieve information from the second table defined in the memory, wherein the information from the second table is associated with a second wave shape of a second electrical signal waveform for performing a surgical procedure;
• and
• combine the first and second wave shapes to create a combined wave shape of a combined electrical signal waveform for performing a surgical procedure;
• deliver the combined wave shape of the combined electrical signal waveform for performing the surgical procedure to a surgical instrument via the electrical output port;
• and
• modify the combined wave shape of the combined electrical signal waveform to form a modified electrical signal waveform, the modified electrical signal waveform comprising a peak amplitude that does not exceed a predetermined amplitude and is less than a peak amplitude of the combined electrical signal waveform.