Covidien LP

Other

Douglas M Pattison

Kevin M Desjardin

Christopher A Tokarz

Astley C Lobo

Amanda M Adinolfi

Oksana Buyda

Jason Mickus

Garrett P Ebersole

Satish Gundala

Alexander Y Ueno

A surgical access device includes a cannula body and a fixation mechanism. The cannula body includes a housing, and an elongated portion extending distally from the housing and defining a longitudinal axis. The fixation mechanism includes a flange, a fixation sleeve, and a proximal sleeve. The flange is rotatable about the longitudinal axis. The fixation sleeve extends distally from the flange and radially surrounds a portion of the elongated portion of the cannula body. The proximal sleeve extends distally from the flange and radially surrounds a proximal portion of the fixation sleeve. Rotation of the flange causes a radially-expandable portion of the fixation sleeve to move between a first position defining a first gap between the radially-expandable portion and the elongated portion, and a second position defining a second, greater, gap between the radially-expandable portion and the elongated portion.

Surgical access device with rotatably actuated fixation mechanism

A cannula assembly is utilized during a minimally invasive surgery to provide sealed access of a surgical instrument to an insufflated body cavity. The cannula assembly includes a cannula sleeve and a suction cup that is adjustably positionable on the cannula sleeve. The suction cup is formed of a compressible material such that when the suction cup is compressed or pressed against tissue by a clinician, the suction cup creates suction and engages tissue in a sealing relation.

Cannula assembly including a suction cup seal

A surgical access device includes a cannula body, an anchor, and a first suture retention mechanism. The cannula body includes a housing and an elongated portion extending distally from the housing. The elongated portion defines a longitudinal axis and a channel extending therethrough. The anchor is disposed in mechanical cooperation with the elongated portion of the cannula body and is longitudinally translatable relative to the elongated portion. The first suture retention mechanism extends laterally from the anchor. A suture-receiving channel is defined between a portion of the suture retention mechanism and a portion of the anchor.

Surgical access device including an anchor having a suture retention mechanism

A surgical access assembly includes a cannula including an elongated shaft and a retention anchor movable position along the elongated shaft. The retention anchor includes an annular body and a wiper disposed at a distal end of the annular body. The annular body includes a proximally-facing surface, a distally-facing surface, an outer side surface, and an inner side surface. The inner side surface defines a channel for reception and passage of the elongated shaft therethrough and the proximally-facing surface defines a proximal opening into the channel. The wiper extends radially inwardly of the inner side surface and defines a distal opening into the channel for establishing a sealed relation about the elongated shaft. The distal opening has a smaller diameter than the proximal opening.

Retention anchor for surgical access devices

A surgical access assembly includes a cannula including an elongated shaft having a proximal end portion including an anchor inflation port and a distal end portion including an expandable anchor. The elongated shaft includes an inner tube and an outer tube disposed over the inner tube. The inner tube includes at least one groove defined in an outer surface thereof that forms an inflation channel with an inner surface of the outer tube. The inflation channel is in communication with the anchor inflation port and the expandable anchor.

Surgical access device including dual lumen cannula for anchor inflation and deflation

A surgical access device has a housing and a tubular member extending from the housing. A collar includes proximal and distal walls along with first and second sidewalls. The first and second sidewalls have a circular configuration and join the proximal and distal walls. The collar is repositionable along a length of the tubular member. A cavity is defined between the proximal and distal walls and the first and second sidewalls. The cavity is configured to store a quantity of a fluid therein. Pores extend through the distal wall and each pore is configured to allow a predetermined quantity of the fluid to flow therethrough. A port is disposed through the proximal wall and is in fluid communication with the cavity. The port is configured to allow the fluid to be introduced into the cavity.

Surgical access device having a hollow anchor

A surgical access device including a cannula body and an anchor is disclosed. The cannula body includes a housing, and an elongated portion extending distally from the housing. The elongated portion defines a longitudinal axis and defines a channel extending therethrough. The anchor is disposed in mechanical cooperation with the elongated portion of the cannula body and is longitudinally translatable relative to the elongated portion. The anchor defines an aperture and includes a ratchet mechanism configured to selectively lock a size of the aperture.

Surgical access device including anchor with ratchet mechanism

A surgical access device includes a cannula, an instrument housing coupled to the cannula, a port coupled to the instrument housing, and a valve disposed within the port. The cannula includes an elongated shaft defining an access lumen and an inflation lumen therethrough. The port includes an inflation channel and an insufflation channel defined therethrough. The inflation channel is in fluid communication with the inflation lumen of the cannula and the insufflation channel is in fluid communication with the access lumen of the cannula. The valve is movable within the port between an inflation position in which a passageway defined through the valve is aligned with the inflation channel of the port, and an insufflation position in which the passageway of the valve is aligned with the insufflation channel of the port.

Surgical access device including a universal fluid flow valve

A surgical access assembly includes a cannula including an elongated shaft and a retention anchor movably positionable along the elongated shaft. The retention anchor includes an annular body and a fixation body. The annular body includes a proximally-facing surface, a distally-facing surface, an inner side surface defining an opening therethrough, and an outer side surface. The fixation body includes a disc secured to the distally-facing surface of the annular body and wings extending radially outwardly from the disc beyond the outer side surface of the annular body. The disc defines an opening therethrough and the elongated shaft extends through the openings in the annular body and the fixation body.

Retention anchor with suture tie down for surgical access devices

A retention mechanism for a surgical access assembly is provided. The retention mechanism includes a planar base having first and second extensions each with a free end, a first locking member disposed on the free end of the first extension, and a second locking member disposed on the free end of the second extension. The first locking member includes a U-shaped body having a first set of opposed, inwardly facing teeth. The second locking member includes a U-shaped body having a first set of opposed, outwardly facing teeth configured engage the first set of opposed, inwardly facing teeth when the retention mechanism is in a locked condition. The first set of opposed, inwardly facing teeth and the first set of opposed, outwardly facing teeth are configured to be spaced apart from each other when the retention mechanism is in an unlocked condition.

Access assembly with retention mechanism

A surgical kit includes a cannula assembly and a sheath. The cannula assembly includes a housing, an elongate shaft defining a lumen and extending from the housing, a fluid port adapted to be coupled to a fluid source, and an expandable body in fluid communication with the fluid port. The sheath is configured to be disposed over the expandable body of the cannula assembly to apply a compressive force to the expandable body. The sheath is transitionable between a contracted configuration and an expanded configuration.

Protective sheath for use with a surgical instrument having an expandable body

A surgical access device includes a cannula having a variable length. The cannula may include a shaft assembly including an outer shaft, an intermediate shaft disposed within and longitudinal slidable relative to the outer shaft, and an inner shaft disposed within and longitudinal slidable relative to the intermediate shaft. The shaft assembly is movable between an unextended position, a fully extended position, and a semi-extended position between the unextended and fully extended positions. The cannula may include a shaft having annular folds formed therein. The annular folds are axially movable relative to each other such that the shaft is longitudinally movable between an unextended position and a plurality of extended positions.

Surgical access device including variable length cannula

A surgical access assembly including an elongated cannula member having proximal and distal end portions, a cannula housing coupled to the proximal end portion of the elongated cannula member, a balloon anchor coupled to the distal end portion of the elongated cannula member, and a collar disposed along the elongated cannula member and in fluid communication with the balloon anchor. The collar includes a first check valve and a manually actuatable pump. The first check valve is configured to control flow of air into the balloon anchor. The manually actuatable pump is coupled to the first check valve.

Growing community of inventors

East Hartford, CT, United States of America

Douglas M Pattison