Methods, devices, and systems for controlling a tissue-treatment motion by a surgical instrument are disclosed.

A surgical instrument system comprising a motor system and a control circuit is disclosed. The motor system comprises a motor and a drive train movable by the motor to actuate a firing member through a staple firing stroke. The control circuit is coupled to the motor, wherein, during the staple firing stroke, the control circuit is configured to perform a first sensory action to determine if a speed of the motor can be increased to a first target speed, monitor a result of the first sensory action, adjust a parameter of a subsequent sensory action based on the monitored result of the first sensory action, and perform the subsequent sensory action with the adjusted parameter.

A method of operating a surgical instrument is disclosed. The surgical instrument includes an electronic system comprising an electric motor coupled to the end effector; a motor controller coupled to the motor; a parameter threshold detection module configured to monitor multiple parameter thresholds; a sensing module configured to sense tissue compression; a processor coupled to the parameter threshold detection module and the motor controller; and a memory coupled to the processor. The memory stores executable instructions that when executed by the processor cause the processor to monitor multiple levels of action thresholds and monitor speed of the motor and increment a drive unit of the motor, sense tissue compression, and provide rate and control feedback to the user of the surgical instrument.

A laser with a wide continuous wavelength tuning range is desirable for optimized selective photothermolysis (SP) laser surgeries that treat light-absorptive lesions and unwanted pigments in human tissue with minimal collateral damages. However, current SP laser surgical systems are limited to a few lasing lines including 1024 nm by Nd:YAG, 755 nm by Alexandrite, 694 nm by Ruby, and 532 nm by second harmonic generation of 1064 nm. This invention discloses techniques to implement a high power, tunable optical parametric oscillator (OPO) system for demanding SP applications such as laser tattoo removal. In addition to wavelength tuning, the OPO laser system's output pulse energy, pulse duration, and pulse-train duration are also adjustable by tuning the pump laser pulse energy, pump laser pulse duration, and pump laser pulse-train duration for optimizing SP laser surgical outcomes.

According to some embodiments, a system for fractionally treating tissue includes: an electromagnetic radiation (EMR) source configured to generate an EMR beam having a transverse ring energy profile; an optic configured to converge the EMR beam to a focal region located within a tissue; and, a window assembly located down-beam from the optic configured to cool the tissue when placed in contact with an outer surface of the tissue.

A system includes a focus optic configured to converge an electromagnetic radiation (EMR) beam to a focal region located along an optical axis. The system also includes a detector configured to detect a signal radiation emanating from a predetermined location along the optical axis. The system additionally includes a controller configured to adjust a parameter of the EMR beam based in part on the signal radiation detected by the detector. The system also includes a window located a predetermined depth away from the focal region, between the focal region and the focus optic along the optical axis, wherein the window is configured to make contact with a surface of a tissue.

Methods and systems for distributing electrical energy to tissue which minimize Joule heating, thermal effects, and/or thermal damage, without sacrificing efficacy of treatment, are described. The methods and systems are particularly suitable to electrical energy-based therapies employing multiple electrodes, such as arrays of electrodes.

A powered surgical stapler comprising an outer housing body, a shaft housing rotatable relative to the outer housing body, an elongate shaft extending from the shaft housing and including a driver, an inner housing assembly configured to be removably attached to the outer housing body, a plurality of securing features, and a loading unit is disclosed. The inner housing assembly comprises a motor configured to output rotary motions, a battery, control electronics in signal communication with the motor and a shaft output configured to be driven by the motor. The plurality of securing features are configured to align and hold the inner housing assembly in a position which allows the shaft output to be operably attached to the driver. The loading unit is removably attachable to the elongate shaft and comprises an end effector configured to perform an end effector function in response to the rotary motions of the motor.

Systems and methods for performing laser operations to improve the accommodative amplitude of an eye. Systems methods and laser delivery patterns and operation for structural pillars in the lens of the eye to permit deformation of laser effected areas of the lens that are adjacent to the pillars.

A surgical instrument includes a shaft, an end effector extending distally from the shaft, and a housing extending proximally from the shaft. The housing includes a motor configured to generate at least one motion to effectuate the end effector, and a power source configured to supply power to the surgical instrument, wherein the power source includes a casing, a data storage unit, and a deactivation mechanism configured to interrupt access to data stored in the data storage unit. In addition, the power source includes a battery pack and a deactivation mechanism configured to deactivate the battery pack if the casing is breached.