Covidien LP

Christopher Kelly Evans

Robert C Smith

Henry E Holsten

Gregory W Fischvogt

Jay Breindel

Gregory Okoniewski

Anthony D Calderoni

Matthew Eschbach

Nizamudheen Kalakkudi Chalil

Thomas Wingardner

Robert H Knapp

Brandon L Calavan

Robert Smith

A surgical device includes an end effector having a pair of opposing jaw members and a drive beam movable longitudinally through the pair of opposing jaw members thereby approximating the pair of opposing jaw members relative to each other. The device also includes an adapter assembly configured to selectively couple to the end effector. The adapter assembly includes an actuation assembly configured to mechanically engage the drive beam and to move the drive beam longitudinally. The device also includes a handle assembly configured to selectively couple to the adapter assembly. The handle assembly includes: a power source, a motor coupled to the power source, a sensor configured to measure a force imparted on the drive beam, and a motor controller configured to control the motor to maintain constant force on the drive beam based on the force measured by the sensor during longitudinal movement of the drive beam approximating the pair of opposing jaw members closer relative to each other.

Handheld electromechanical surgical system

A valve assembly for use with a surgical instrument is disclosed. The valve assembly includes a housing and a seal assembly disposed within the housing, the seal assembly including a septum seal including an orifice configured to sealingly engage a surgical instrument inserted therethrough, at least a portion of the septum seal defining a seal curvature, a first guard member including a plurality of curved first guard portions defining slits therebetween, and a second guard member including a plurality of curved second guard portions defining slits therebetween. The first and second guard members may be positioned in an overlapping relationship with the plurality of first guard portions rotationally offset with respect to the second guard portions. The wide, triangular shaped slits of the guard members may improve flexibility of the guard portions.

Surgical access device

A seal assembly including a septum seal, a lower seal support, an upper seal support and a return spring is disclosed. The septum seal includes an orifice and a plurality of apertures. The lower seal support includes an engagement surface configured to engage a portion of the septum seal. The upper seal support includes a plurality of fingers, wherein each of the plurality of fingers is configured to extend through a corresponding aperture of the septum seal. The return spring includes a collar portion and a plurality of spokes extending radially outward from the collar portion. At least a portion of the return spring may be sandwiched between the lower seal support and the upper seal support. The plurality of spokes is configured to bias the seal assembly toward a radial center of a housing.

Optical trocar visualization system and apparatus

A powered handheld electromechanical surgical device includes a motor configured to drive extension and retraction of a drive component, a sensor configured to sense force exerted on the drive component during extension of the drive component, and a controller including a processor and a non-transitory computer-readable storage medium storing instructions that, when executed by the processor, cause the processor to receive the sensed force from the sensor, control a speed of the motor during extension of the drive component in accordance with the sensed force, determine a speed profile or a force profile during extension of the drive component, and control a speed of the motor during retraction of the drive component in accordance with the speed profile or the force profile.

Powered surgical devices including predictive motor control

A surgical instrument includes: an end effector; a power source; a motor coupled to the power source, the motor configured to actuate the end effector; and a controller operatively coupled to the motor and configured to control the motor based on a current draw of the motor and an angular velocity of the motor.

Powered surgical device with speed and current derivative motor shut off

A surgical access device including a cannula, a seal, and a seal guard is disclosed. The cannula includes a housing and an elongated portion extending distally from the housing. The seal is disposed at least partially within the housing of the cannula and includes an aperture for sealed reception of a surgical instrument therethrough. The seal guard is disposed at least partially within the housing of the cannula and proximally of the seal. The seal guard is formed from a flat sheet of material and folded into a funnel-like shape.

Surgical access device and seal guard for use therewith

A surgical stapling instrument includes a handle assembly, a surgical loading unit, and an adapter assembly interconnecting the handle assembly and the surgical loading unit. The surgical loading unit includes a memory having stored therein instructions, which when executed by a processor of the handle assembly, override instructions stored in a memory of the handle assembly and implement an operating parameter of the surgical loading unit that is unique to a tissue type or a specific surgical procedure to be performed by the surgical loading unit.

Surgical stapling instruments and surgical loading units thereof

A surgical instrument includes a handle portion, a shaft coupled to the handle portion, a pair of jaw members operably coupled to the shaft, an inflatable member, and a sensor. The inflatable member is associated with one of the jaw members and is configured to apply pressure to tissue disposed between the pair of jaw members. The sensor is associated with one of the jaw members and is configured to measure local perfusion pressure in the tissue disposed between the pair of jaw members.

Surgical instruments including sensors

A surgical access apparatus including a cannula defining an internal lumen, the cannula having a connection for receiving insufflation fluid. The apparatus also includes an obturator assembly, the obturator assembly configured to be inserted through a cannula so as to define an interstitial space between the cannula and the obturator assembly. The interstitial space is in fluid communication with the cannula connection so as to convey the insufflation fluid. The obturator assembly includes an obturator shaft having a hollow interior and a tip member at a distal end of the obturator shaft. The tip member is configured to penetrate and/or dissect through tissue. The tip member has an outer surface that defines a channel, the channel being in fluid communication with the interstitial space to as to convey the insufflation fluid from a proximal end of the tip member to a distal end of the tip member.

Growing community of inventors

Southington, CT, United States of America

Christopher Kelly Evans