assembly configured for removably interconnecting between the hand-held probe device and the rotating motor device. The hand-held probe device is disposable and comprises a housing having proximal and distal ends, a rotatable cutting tool extending distally from the distal end of the housing and being configured for cutting and removing tissue during rotation, and a transmission assembly passing inside the housing between the proximal and distal ends and being configured for transmitting rotational power to the rotatable cutting tool. The connection assembly is configured for engaging between the rotating motor device and the transmission assembly to thereby controllably rotate the cutting tool and remove tissue. In some embodiments, the apparatus includes a control unit for controlling operation of the apparatus, the control unit comprises an activation mechanism for activating the rotatable cutting tool, and a controller configured for operating the activation mechanism to generate a single fixed activation signal of a known intensity and duration during a predetermined time interval, thereby restricting operation of the cutting tool during the time interval to the single activation signal only.

Apparatus and associated methods relate to controlling electrical power of an electrotherapeutic signal that is provided to a biological tissue engaged by an electrosurgical instrument during a medical procedure. Electrical power—a product of a voltage difference across and an electrical current conducted by the engaged biological tissue—is controlled according to a therapeutic schedule. The electrotherapeutic schedule can be reduced or terminated in response to a termination criterion being met. In some examples, the termination criterion is a current characteristic, such as, for example, a decrease in current conducted by the engaged biological tissue. In some examples, the termination criterion is a biological tissue resistance characteristic, such as, for example, an increase in the biological tissue resistance that exceeds a predetermined delta resistance value.

Tourniquet devices and systems for emergency and in-field use are provided that comprise a timing apparatus to facilitate accurate tracking of elapsed time from the initiation of treatment. Methods for using a tourniquet or tourniquet system of the present disclosure are also described.

A powered endoscopic surgical apparatus is provided and includes a handle including a housing, a power source supported in the housing; an endoscopic portion extending distally from the housing of the handle; an end effector assembly coupled to a distal end of the endoscopic portion, the end effector assembly including a pair of jaws configured to perform a surgical function; a driving member; a drive source including a motor powered by the power source and connected to the driving member; and a gear assembly engaged with the motor. The gear assembly including a gear rack provided on the driving member; and a main gear operatively connected with the gear rack, the motor spinning the main gear such that rotary motion of the main gear moves the driving member in an axial direction such that the driving member actuates the end effector to perform the surgical function.

A dynamic balloon angioplasty system for applying a dynamic pressure to fracture hardened materials embedded within an elastic conduit. The system having a pressure source system outputting at least a first predetermined pressure from a pressure source outlet, and an angioplasty unit fluidly coupled to the pressure source outlet receiving at least the first predetermined pressure. The angioplasty unit having an angioplasty inflation device, an angioplasty balloon connector, and an oscillating mechanism selectively actuated to output a plurality of pressure pulses to the angioplasty balloon via a fluid communication path. A control system is configured to determine an optimal hydraulic pressure oscillation frequency and amplitude for a given procedure and output a control signal to the oscillating mechanism, and monitor a pressure signal to detect fracture of the hardened material within the elastic conduit or system failure or leakage.

A surgical instrument. The surgical instrument includes an elongated channel configured to support a staple cartridge, an anvil pivotably connected to the elongated channel, a knife mechanically coupled to the staple cartridge, an electric motor and a control circuit electrically connected to the electric motor. The control circuit is configured to change a firing motion a first way based on a first value of a projected peak firing force and a second way based on a second value of the projected peak firing force value.

An ultrasonic tool system with a console and a tip that has a distal end that when vibrated vibrates both longitudinally and torsionally. The console applies a drive signal to the drivers that vibrate the tip that is at a longitudinal mechanical cancellation frequency. Consequently, when the tip is vibrated, at the distal end the longitudinal component of a first resonant mode of the tip cancel out the longitudinal component of the second resonant move of the tip so the distal end of the tip engages in vibrations that substantially torsional and only minimally longitudinal.

The visualization method includes displaying three-dimensional image data of at least one anatomical feature of a patient, receiving user input of the target for placing an ablation needle in the at least one anatomical feature of the patient, determining the position and orientation of the ablation needle based on the user input, displaying an image of a virtual ablation needle in the three-dimensional image data of the at least one anatomical feature of the patient according to the determined position and orientation, receiving user input of parameters of operating the ablation needle, and displaying a three-dimensional representation of the result of operating the ablation needle according to the input parameters.

Apparatus and associated methods relate to controlling electrical power of an electrotherapeutic signal that is provided to a biological tissue engaged by an electrosurgical instrument during a medical procedure. Electrical power—a product of a voltage difference across and an electrical current conducted by the engaged biological tissue—is controlled according to a therapeutic schedule. The electrotherapeutic schedule can be reduced or terminated in response to a termination criterion being met. In some examples, the termination criterion is a current characteristic, such as, for example, a decrease in current conducted by the engaged biological tissue. In some examples, the termination criterion is a biological tissue resistance characteristic, such as, for example, an increase in the biological tissue resistance that exceeds a predetermined delta resistance value.

Aspects of the present disclosure are presented for a surgical instrument having one or more sensors at or a near an end effector and configured to aide in the detection of tissues and other materials and structures at a surgical site. The detections may then be used to aide in the placement of the end effector and to confirm which objects to operate on, or alternatively, to avoid. Examples of sensors include laser sensors used to employ Doppler shift principles to detect movement of objects at the surgical site, such as blood cells; resistance sensors to detect the presence of metal; monochromatic light sources that allow for different levels of absorption from different types of substances present at the surgical site, and near infrared spectrometers with small form factors.