Abstract: A method for performing an electrosurgical procedure is provided. The method includes engaging a tissue with an electrode and applying a non-therapeutic signal to the tissue via the electrode. The method further includes varying a frequency of the non-therapeutic signal and receiving a return signal generated from the tissue in response to the non-therapeutic signal. The non-therapeutic signal includes a voltage and a current. The method further includes detecting a phase angle between the voltage and the current of the non-therapeutic signal during the varying of the frequency of the non-therapeutic signal, and identifying, as a center frequency, the frequency when the phase angle of the return signal is at a minimum. A surgical system is also provided.

Abstract: One or more data streams may be used for controlling multi-system interaction. For example, a data stream may be received, and a surgical option associated with a surgical instrument may be selected based on the data stream. A control signal associated with the surgical instrument may be generated based on the selected surgical option. A surgical device may receive an external data stream from a source external to the surgical system. The device may derive, based at least on the external data stream, decision contextual information. The device may select a surgical option associated with a surgical instrument based on the decision context information. The device may generate a visual indication of the decision context information associated with selecting the surgical option. The device may generate a control signal associated with the surgical instrument based on the selected surgical option.

Abstract: Devices and methods for visualizing effects of device placement in an operating room. An example device may determine a fixed position of a first base attached to a first robotic arm. The device may determine based on the fixed position of the first base, that a first candidate position of a second base is associated with a first number of interactions in which the first robotic arm and a second robotic arm attached to the second base will co-occupy space. The device may determine, based on the fixed position of the first base, that a second candidate position of the second base is associated with a second number of interactions in which the first robotic arm and the second robotic arm will co-occupy space. The device may select the first candidate position or the second candidate position based on the first number of interactions and the second number of interactions.

Abstract: A surgical stapling instrument includes a body member having a distal end. The distal end is configured to be fixedly secured to an annular deck member having a plurality of staple openings. The body member is configured to slidably house a staple driver member. The body member includes a radially expandable collar having at least one latching feature. The surgical stapling instrument also includes a shaft assembly, including a proximal sheath portion, a distal sheath portion, and at least one protrusion extending radially outwardly from the distal sheath portion. The at least one protrusion includes at least one abutment surface configured to engage the at least one latching feature of the radially expandable collar for coupling the body member to the shaft assembly.

Abstract: A surgical stapling instrument includes a body member having a distal end. The distal end is configured to be fixedly secured to an annular deck member having a plurality of staple openings. The body member is configured to slidably house a staple driver member. The body member includes a radially expandable collar having at least one latching feature. The surgical stapling instrument also includes a shaft assembly, including a proximal sheath portion, a distal sheath portion, and at least one protrusion extending radially outwardly from the distal sheath portion. The at least one protrusion includes at least one abutment surface configured to engage the at least one latching feature of the radially expandable collar for coupling the body member to the shaft assembly.