Managing tissue treatment
View Patent ↗Various examples are directed to a surgical system comprising an end effector and a generator. The end effector may comprise at least one jaw member having an open position and a closed position. The generator may be programmed to receive a request for an energy cycle routine to the end effector. The generator may determine that the at least one jaw member has not been in the open position since a conclusion of a previous energy cycle. The generator may apply a modified energy cycle routine to the end effector. Applying the modified energy cycle routine may comprise delivering less energy than applying the energy cycle routine.
1. A surgical system, the surgical system comprising:
a generator of a surgical instrument, wherein the generator is configured to deliver energy to an end effector of the surgical instrument according to a selected energy cycle, and wherein the generator comprises:
an energy source configured to supply energy; and
a control circuit configured to activate the generator, wherein the control circuit is further configured to:
receive a first request to activate the generator to deliver energy to the end effector according to a first energy cycle;
activate the generator to deliver the energy to the end effector according to the first energy cycle;
receive a second request to activate the generator to deliver energy to the end effector according to a second energy cycle;
determine that tissue positioned in the end effector has been treated by the energy delivered to the end effector according to the first energy cycle;
modify the second energy cycle, wherein a total energy delivered according to the modified second energy cycle is less than a total energy delivered according to the second energy cycle; and
activate the generator to deliver energy to the end effector according to the modified second energy cycle.
2. The surgical system of claim 1 , wherein the control circuit is further configured to:
after activating the generator to deliver the energy to the end effector according to the modified second energy cycle, receive a third request for a third energy cycle;
determine that the end effector is not in contact with tissue that has been treated by the modified second energy cycle; and
apply the requested third energy cycle.
3. The surgical system of claim 1 , wherein the control circuit is configured to apply the modified second energy cycle so that a duration of the application of the modified second energy cycle does not exceed a maximum time.
4. The surgical system of claim 1 , wherein the end effector comprises a temperature sensor configured to transmit a temperature sensor signal to the control circuit and wherein the temperature sensor signal is indicative of a temperature at the end effector.
5. The surgical system of claim 4 , wherein the control circuit is further configured to:
determine that the temperature at the end effector is greater than a threshold temperature; and
determine that tissue positioned in the end effector has been treated by the energy delivered to the end effector according to the first energy cycle based on determining the temperature at the end effector is greater than the threshold temperature.
6. The surgical system of claim 1 , wherein the end effector comprises a first electrode and a second electrode, and wherein determining that the end effector is in contact with tissue that has been treated by the first energy cycle comprises:
providing a non-therapeutic signal between the first and second electrodes; and
determining that the non-therapeutic signal has not indicated an open circuit between the first and second electrodes since a conclusion of the first energy cycle.