Surgical stapling apparatus

A surgical stapling device particularly suited for endoscopic procedures is described. The device includes a handle assembly and an elongated body extending distally from the handle assembly. The distal end of the elongated body is adapted to engage a disposable loading unit. A control rod having a proximal end operatively connected to the handle assembly includes a distal end extending through the elongated body. A control rod locking member is provided to prevent movement of the control rod until the disposable loading unit is fully secured to the elongated body of the stapling device.

Maximum torque driving of robotic surgical tools in robotic surgical systems

In one embodiment of the invention, a control system for a robotic surgical instrument is provided including a torque saturation limiter, a torque to current converter coupled to the torque saturation limiter, and a motor coupled to the torque to current converter. The torque saturation limiter receives a desired torque signal for one or more end effectors and limits the desired torque to a range between an upper torque limit and a lower torque limit generating a bounded torque signal. The torque to current converter transforms a torque signal into a current signal. The motor drives an end effector of one or more end effectors to the bounded torque signal in response to the first current signal.

Surgical stapling instruments including a cartridge having multiple staple sizes

A surgical stapling apparatus includes a staple cartridge and an anvil member. The staple cartridge includes a plurality of surgical fasteners disposed in rows of retention slots. The staple cartridge may have an annular or linear configuration of retention slots. The tissue contacting surface of the staple cartridge may be tapered or stepped. The anvil member has a tissue contacting surface that includes a number of pockets arranged for substantially aligning with the retention slots. In addition, the tissue contacting surface of the anvil member may complement the tissue contacting surface of the staple cartridge.

Surgical stapling device

A surgical device is disclosed which includes a handle portion, a central body portion and a SULU. The SULU includes a proximal body portion, an intermediate pivot member and a tool assembly. The intermediate pivot member is pivotally secured to the proximal body portion about a first pivot axis and the tool assembly is pivotally secured to the intermediate pivot member about a second pivot axis which is orthogonal to the first pivot axis. The SULU includes a plurality of articulation links which are operably connected to the tool assembly by non-rigid links. The articulation links are adapted to releasably engage articulation links positioned in the central body portion. The body portion articulation links are connected to an articulation actuator which is supported for omni-directional movement to effect articulation of the tool assembly about the first and second axes. The handle portion includes a spindle and barrel assembly drive mechanism for advancing and retracting a drive member positioned in the tool assembly. In one embodiment, the tool assembly includes a cartridge assembly having a plurality of staples and an anvil assembly.

Surgical instrument

The surgical instrument includes a distal tool, an elongated shaft that supports the distal tool, and a proximal handle or control member, where the tool and the handle are coupled to the respective distal and proximal ends of the elongated shaft via distal and proximal bendable motion members. Actuation means extends between said distal and proximal members whereby any deflection of said control handle with respect to said elongated instrument shaft causes a corresponding bending of said distal motion member for control of said working member. The proximal bendable member comprises a ball and socket assembly supported between the handle and instrument shaft and constructed and arranged for three dimensional motion.

Tubular medical instrument

The invention relates to a tubular medical instrument having a hollow shaft, a handle positioned on the proximal end of the shaft and equipped with at least two gripping members, and at least one push-pull rod that is positioned in the hollow shaft and has on its distal end a tool consisting of at least two jaw members, wherein for opening and closing at least one jaw member of the tool, the push-pull rod can be coupled with at least one rotatable gripping member of the handle and wherein the push-pull rod and the handle can be detachably connected to one another by a coupling mechanism that is configured as at least one clamping device comprising at least one clamping claw characterized in that the at least one clamping claw can rotate in a guide track mounted between a closed position and an open installation position. To create a coupling mechanism that is easy to handle, it is proposed according to the invention that the at least one clamping claw is mounted in a guide track so that it can rotate between a closed clamping position and an open installation position.

Safety battery meter system for surgical hand piece

A safety meter system for a battery-operated surgical hand piece is disclosed. The system has a controller, a sensor, and a display. The controller is configured to read a charge level from a battery. The sensor is configured to transmit a signal to the controller when the sensor is moved or grasped. The display provides an indication of a status of the battery. When the controller receives the signal from the sensor, the controller is energized, reads the status from the battery, and displays the status on the display. After a period of time after the status is displayed, the controller and the display are turned off.

SILICONE COMPOSITION FOR BIOCOMPATIBLE MEMBRANE

The present invention relates generally to biosensor materials. More specifically, this invention relates to a novel polymeric material that can be useful as a biocompatible membrane for use in biosensor applications.

Signal processing apparatus

The present disclosure describes a method and an apparatus for analyzing measured signals using various processing techniques. In certain embodiments, the measured signals are physiological signals. In certain embodiments, the measurements relate to blood constituent measurements including blood oxygen saturation.

Sine saturation transform

A transform for determining a physiological measurement is disclosed. The transform determines a basis function index from a physiological signal obtained through a physiological sensor. A basis function waveform is generated based on basis function index. The basis function waveform is then used to determine an optimized basis function waveform. The optimized basis function waveform is used to calculate a physiological measurement.