According to an aspect of the present disclosure, an apparatus for forming an anastomosis between adjacent sections of tissue is provided. The apparatus includes a body portion; an actuation assembly operatively supported at a proximal end of the body portion; an anvil assembly movably mounted at the distal end of the body portion for movement toward and away from the body portion; an approximation assembly extending between the body portion and the anvil assembly for moving the anvil toward and away from the tubular body portion; a dispersion assembly operatively associated with the approximation assembly, the dispersion assembly including at least one angled surface defining at least one channel interposed between the anvil assembly and the body portion and being configured to dispense a fluid therefrom; and at least one conduit for conducting wound treatment material to the dispersion assembly.

Mechanisms for altering the shape of a cell or chamber of a shaft or an actuation drive of an instrument are provided. The mechanisms may selectively rigidize the shaft of surgical or diagnostic instruments. The shaft assembly includes a shaft operatively connectable to a control member, at least one cell or a set of cells defined within the shaft, a shape altering material contained within the cell or cells, and, an activation link operatively connectable to a source of activation energy for delivering activation energy to each cell for activating the shape altering material to selectively rigidize or unrigidize the shaft. An actuator for producing work is also provided that includes an element within a housing that defines a cell or a set of cells. The shape altering material is contained within the cells, and a source of activation energy operatively connected to each cell for activating the shape altering material to expand or contract the cell. The element is operatively connectable to a driving member of an instrument such that the change in the cell is translated to the driving member to facilitate the production of work.

A method of performing a surgical anastomosis is disclosed. The method includes providing an anastomotic device including a fluid supply channel extending between a handle assembly and a head assembly. The method also includes positioning the head assembly of the anastomotic device adjacent a hollow tissue organ, inserting the head assembly of the anastomotic device into the hollow tissue organ, and discharging an inflation fluid through at least one fluid outlet and into the hollow tissue organ to insufflate at least a portion of the hollow tissue organ.

A surgical stapling apparatus is provided including a cartridge assembly defining a tissue contacting surface; an anvil assembly defining a tissue contacting surface; and a surgical buttress releasably secured to at least one of the tissue contacting surface of the cartridge assembly and the tissue contacting surface of the anvil assembly by at least one anchor. A loading unit is provided including a surgical buttress releasably secured to an anvil assembly and/or a staple cartridge secured thereto by at least one anchor, and a drive assembly including a knife blade, wherein movement of the drive assembly from a proximal position to a distal position results in the knife blade cutting the at least one anchor and freeing each surgical buttress from the anvil assembly and/or cartridge assembly.

The present invention relates to an anastomosis system for realizing anastomosis between first and second hollow structures, such as end-to-side anastomosis, by way of a joining member and an applicator. The anastomosis system comprises an annular joining member adapted for joining the first and second hollow structures, a tubular member adapted to position the joining member at or proximate to a distal end of the second hollow structure and to be at least partially inserted into the second hollow structure, a support member adapted to hold the second hollow structure and a mechanism, for actuating the joining member when positioned at or proximate to the distal end of the second hollow structure, which joining member is actuated substantially radially relative to a longitudinal axis of the tubular member.

A vascular closure system for sealing an opening in a blood vessel may include an introducer sheath extending through the opening, the introducer sheath having a lumen extending through the introducer sheath, wherein partial withdrawal of the introducer sheath from the opening everts tissue of the blood vessel at the opening, and a shaping sheath slidably disposed over the introducer sheath, the shaping sheath having a split distal portion configured to engage the everted tissue.

A circular stapling device includes a handle assembly, an elongate body portion that extends distally from the handle assembly, a shell assembly supported on a distal end of the elongate body portion, an anvil retainer assembly extending through the shell assembly, and an anvil assembly supported on the anvil retainer assembly. The anvil retainer assembly includes a retainer member including a retainer body and an engagement member that is pivotally supported on the retainer body. The engagement member is movable axially in relation to the retainer body from a retracted position to an advanced position to move the engagement member to from a locked position to an unlocked position in relation to the retainer body. In the unlocked position, the engagement member is movable from a non-articulated position to an articulated position in relation to the retainer body.

The present invention discloses an asymmetric anastomat with anti-reflux effect for esophagogastric anastomosis, the improvements lie in that the end face of a nail bin is formed by two arc-shaped plates that are bent towards the same direction and connected and closed in an end-to-end manner to form an arc-shaped cavity, nail outlet holes in the arc-shaped plates are provided around the arc-shaped cavity, and a cutter is consistent with the arc-shaped cavity in shape and is attached to the edge of the inner side wall of the arc-shaped cavity; a stapling anvil plate on the bottom face of the nail abutting base is formed by working out a cutting groove in a circular plate, the shape of the cutting groove is consistent with the shape of the arc-shaped cavity in the end face of the nail bin, and nail abutting grooves that match the nail outlet holes in position and shape are formed in the stapling anvil plate. After anastomosis with the asymmetric anastomat for esophagus and stomach in the present invention, redundant esophageal and gastric tissues on the anterior wall are deformed into the stomach to form a tongue piece by suturing to a seromuscular layer, and, in conjunction with manual folding and suturing at the posterior wall, valvula-like tongue pieces that are closed towards each other are formed in the stomach cavity, so that a valvula-like structure is formed together. The anastomotic stoma passage is in a valvula-like closed state when no food is eaten, and the anastomotic stoma is opened due to the peristalsis pressure of the esophagus and an expansion effect of a food mass during eating, so that a cardia-like effect of preventing stomach-esophageal reflux is achieved.

A seal element for sealing between tissue lumens includes a first material for allowing tissue ingrowth and a second sealant material.

A medical tool comprising an electromechanical driver and a surgical instrument attachment for use in invasive surgery, including a handle coupled to a flexible sheath which is in turn coupled to a surgical attachment. The handle of the driver includes the electromechanical driver and at least one processor element which controls the actions of the electromechanical driver, and therefore the application elements of the surgical attachment, based on information relayed between the processor element and remotely activatable sensor assemblies in the surgical instrument attachment.