Systems and methods for blood flow control are described herein. In some variations, a blood flow control system may comprise a blood flow control device. The blood flow control device may be placed within a body of a patient and may comprise an expandable member and a sensor. The sensor may be configured to measure at least one of a physiologic condition of the patient and a pressure associated with the expandable member. The blood flow control system may include at least one controller communicably coupled to the sensor to: receive data indicative of at least one of the physiologic condition of the patient and the pressure associated with the expandable member from the sensor, compare the received data with target data, identify at least one error based on the comparison, and in response to identifying the error, inhibit at least one function of the blood flow control system.

A surgical instrument is disclosed. The surgical instrument comprises an end effector comprising an ultrasonic blade and a clamp arm. The clamp arm is movable relative to the ultrasonic blade to transition the end effector between an open configuration and a closed configuration to clamp tissue between the ultrasonic blade and the clamp arm. The surgical instrument further comprises a transducer configured to generate an ultrasonic energy output and a waveguide configured to transmit the ultrasonic energy output to the ultrasonic blade. The surgical instrument further comprises a control circuit configured to monitor a parameter of the surgical instrument, wherein crossing an upper predetermined threshold of the parameter causes the control circuit to effect a first electromechanical system, and wherein crossing a lower predetermined threshold of the parameter causes the control circuit to effect a second electromechanical system different than the first electromechanically system.

A surgical instrument is disclosed. The surgical instrument includes an electric motor and a control circuit. The control circuit includes a plurality of logic gates and a monostable multivibrator. The monostable multivibrator is connected to a first one of the logic gates. The control circuit is configured to alter a rate of action of a function of the surgical instrument by controlling a speed of rotation of the electric motor based on a sensed parameter.

Disclosed is a method including establishing a first communication link between a surgical visualization system outside a sterile field in an operating room and a primary display inside the sterile field, transmitting an image frame from the surgical visualization system to the primary display, establishing a second communication link between a surgical robotic hub in the operating room and the primary display, and transmitting another image frame from the surgical robotic hub to the primary display.

An ultrasonic device may include an electromechanical ultrasonic system defined by a predetermined resonant frequency, the electromechanical ultrasonic system further including an ultrasonic transducer coupled to an ultrasonic blade. A method of delivering energy to the ultrasonic device may include measuring a complex impedance of the ultrasonic blade coupled to the ultrasonic transducer, comparing the measured complex impedance to stored values of complex impedance patterns associated with ultrasonic blade functions, and applying, an algorithm to control a power output to the ultrasonic transducer based on the comparison. The method may further include delivering energy to the ultrasonic device based on a state or condition of an end effector, in which the state or condition of the end effector corresponds to a state of only sealing a tissue or of spot coagulating the tissue.

A surgical robotic system includes a housing, wherein the housing includes a rotary drive; a motor that applies a rotary motion to the rotary drive; a surgical tool that releasably attaches to the housing, the surgical tool including: an end effector; a rotary interface that releasably couples to the rotary drive; a firing assembly; a lockout member movable from a locked state to an unlocked state by a sled; and a control circuit communicably coupled to the motor, wherein the control circuit is configured to: activate the motor to effect the motion of the firing assembly; monitor a current draw of the motor during the motion of the firing assembly; detect a fault state in the motion of the firing assembly based on the current draw of the motor; stop the motor based on the detection of the fault state; and alert a user regarding the fault state.

The disclosed embodiments relate to systems and methods for a surgical tool or a surgical robotic system. An actuator or a motor of a tool driver is configured to operate a joint of a tool. One or more processors are configured to receive an initial joint command for the joint of the tool, determine a joint torque based on motor torque of the motor or actuator as well as motor to joint torque mapping, calculate a tip force based on an effective length associated with the joint and based on the joint torque, compare the tip force to a predetermined threshold, calculate an admittance control compensation term in response to the tip force exceeding the predetermined threshold, and generate a command for the motor or actuator based on the admittance control compensation term and the initial joint command.

A generator, ultrasonic device, and method for controlling a temperature of an ultrasonic blade are disclosed. A control circuit coupled to a memory determines an actual resonant frequency of an ultrasonic electromechanical system comprising an ultrasonic transducer coupled to an ultrasonic blade by an ultrasonic waveguide. The actual resonant frequency is correlated to an actual temperature of the ultrasonic blade. The control circuit retrieves from the memory a reference resonant frequency of the ultrasonic electromechanical system. The reference resonant frequency is correlated to a reference temperature of the ultrasonic blade. The control circuit then infers the temperature of the ultrasonic blade based on the difference between the actual resonant frequency and the reference resonant frequency. The control circuit controls the temperature of the ultrasonic blade based on the inferred temperature

Everting balloon systems and methods for using the same are disclosed herein. The systems can be configured to access and dilate body lumen and cavities. For example, the systems can be used to dilate the cervix and access the uterine cavity. The systems can also be used to occlude the cervix. The systems can also be used to occlude the urethra.

An endoscopic system includes an elongate shaft, a pull wire that runs a length of the elongate shaft, a handle coupled to a proximal portion of the elongate shaft, the handle housing a proximal portion of the pull wire, the handle being couplable to a robotic driver configured to tension the pull wire to cause articulation of the elongate shaft, and one or more conductors that run the length of the elongate shaft, the one or more conductors being electrically coupled to the pull wire at a distal portion of the elongate shaft and configured to form part of a closed electrical circuit with the pull wire.