372 results about "Surgical Fasteners" patented technology

Methods and devices are provided for controlling rotation and actuation of an end effector on a surgical fastening device. In an exemplary embodiment, a single cable actuator is provided and is movable between a first position, in which it is effective to rotate an end effector without actuating (i.e., closing and firing) the end effector, and a second position, in which it is effective to actuate the end effector without rotating the end effector. The single cable can also be effective to close opposed jaws of the end effector.

A surgical stapler which includes or onto which a tool assembly can be mounted for deforming a plurality of surgical fasteners through and fastening tissue includes a housing having a fixed handle and a clamping handle mountable to the housing. The clamping handle is selectively movable relative to the fixed handle from a first position in spaced relation relative to the fixed handle to a second position closer to the fixed handle to actuate the clamping of tissue. An adapter yoke is included which translates within the housing upon actuation of the clamping handle. The adapter yoke mechanically cooperates with a lead screw to actuate the tool assembly to clamp tissue. A drive assembly is also included for rotating a shaft which mechanically engages the lead screw. Upon selective activation of the drive assembly, the shaft rotates the lead screw to advance a roll nut and force a firing piston into the tool assembly to deform the surgical fasteners through and fasten the tissue.

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.

A surgical instrument is adapted for applying a plurality of surgical fasteners to body tissue. The surgical instrument includes a frame having a proximal end and a distal end, with a handle positioned at the proximal end and an end effector positioned at the distal end. The end effector is shaped and dimensioned for supporting a cartridge housing and an anvil, the cartridge housing and anvil being relatively movable by actuation of a closure mechanism. The surgical instrument further includes a firing mechanism associated with the end effector and the cartridge housing for selective actuation of the surgical fasteners features. The surgical instrument also includes a retaining pin for enclosing tissue between the anvil and the cartridge housing. The retaining pin is moved by actuation of the closure mechanism from an open first position to a closed second position. A manual actuator is associated with the retaining pin for moving from the second position back to the first position and alternatively moving the retaining pin from the first position to the second position.

Methods and devices are provided for effecting movement of one or more components of a multifire device, such as a clip applier, hernia tacker, or skin stapler. In one exemplary embodiment, a surgical fastening instrument is provided having an elongate shaft with an end effector coupled thereto and adapted to apply one or more surgical fasteners to tissue. An electrically expandable and contractible actuator, such as an electroactive polymer actuator, can be used to drive a fastener advancing or forming assembly through the elongate shaft, thereby driving a surgical fastener into tissue. In another embodiment, an electrically expandable and contractible actuator, such as an electroactive polymer actuator, can be used to effect movement of an articulation joint formed between the elongate shaft and the end effector.

A surgical fastener apparatus is provided with a reinforcement material holder, where the holder positions a sheet of reinforcement material adjacent body tissue that is sutured by a plurality of surgical staples dispensed by the apparatus.

A surgical instrument is adapted for applying a plurality of surgical fasteners to body tissue. The surgical instrument includes an anvil and a cartridge housing containing a plurality of surgical fasteners. The cartridge housing and anvil are relatively movable between a first spaced apart position and a second closed position. A firing mechanism is associated with the cartridge housing for ejecting the surgical fasteners from the cartridge housing to be driven against the anvil. A lockout mechanism interacts with the cartridge housing for activation and deactivation; the lockout mechanism preventing movement of the cartridge housing to its second closed position but permitting relative reapproximation movement of the cartridge housing and anvil, whereby reapproximation provides an indicator that the instrument is not malfunctioning.

The present disclosure relates to surgical fastener applying apparatus, and the application of variable compression to tissue. More specifically, the presently disclosed surgical fastener applying apparatus act to limit the flow of blood through tissue immediately adjacent a cut-line formed therein to effectuate hemostasis, while maximizing the flow of blood through tissue more removed from the cut-line to limit unnecessary necrosis. In one embodiment, a surgical fastener applying apparatus is disclosed having a tool assembly coupled to a distal end thereof with first and second jaws respectively including an anvil and a surgical fastener cartridge. The surgical fastener cartridge includes, among other things, a hemostasis member that is configured to apply at least two different compressive forces to tissue clamped between the first and second jaws of the tool assembly.

The present disclosure relates to surgical fastener applying apparatus, and the application of variable compression to tissue. More specifically, the presently disclosed surgical fastener applying apparatus including a first jaw having proximal and distal ends and including an anvil member, the anvil member extending along a longitudinal axis and including a tissue contacting surface and a second jaw having proximal and distal ends movably coupled to the first jaw, the second jaw including a cartridge member and a channel. The surgical fastener applying apparatus further includes a pair of elastic members positioned between the cartridge member and the channel of the second jaw, the pair of elastic members configured and dimensioned to apply and maintain constant compressive forces to tissue regardless of tissue thickness.

An apparatus is disclosed for endoscopic application of surgical staples adapted to attach surgical mesh to body tissue in laparoscopic hernia surgery. The apparatus includes a frame, and a generally elongated endoscopic section connected to the frame and extending distally therefrom. A staple storage cartridge is removably supported on a pivotal support system at the distal end portion of the endoscopic section with each staple being configured and adapted to attach the mesh to the body tissue. An elongated pusher system formed of several assembled components and extending from the frame to the endoscopic section is provided for individually advancing at least one staple at a time distally for positioning adjacent the surgical mesh and the body tissue. The pusher system also includes a trigger system to actuate the pusher. The trigger system is provided with perceptible tactile sensing means to indicate when the legs of the staple being advanced are exposed so as to be visible to the user for positioning and orientation purposes. Anvil means provides for individually closing each staple to encompass at least a portion of the surgical mesh and to penetrate the body tissue in a manner to attach the portion of the mesh to the body tissue. Projecting distally of the cartridge support system is a pair of legs which are dimensioned and configured to engage the staple during closure to prevent unwanted roll or deformation outside of the plane of the staple.

A coated surgical fastener is provided for an easy visualization within tissue. The coated surgical fastener includes a core and a relatively non-reflective coating applied about the core. There is also disclosed an illuminated staple cartridge for use with a surgical stapling device having a light source. The illuminated staple cartridge includes a transparent insert and a relatively nontransparent U-shaped outer channel at least partially surrounding the transparent insert. Windows formed in sides of the U-shaped outer channel allow defined amounts of light to project from the sides of the illuminated staple cartridge.

A linear surgical stapler adapted for applying a plurality of surgical fasteners to body tissue includes an anvil structure and a cartridge housing containing a plurality of surgical fasteners. The cartridge housing and anvil structure are relatively movable between a first spaced apart position and a second position in close approximation with one another. A firing mechanism is associated with the cartridge housing for ejecting the surgical fasteners from the cartridge housing to be driven against the anvil structure. A lockout mechanism interacts with the cartridge housing for selective activation and deactivation. The lockout mechanism includes a swing gate tab secured to the cartridge housing at a position adjacent a lockout lever, such that firing of the linear surgical stapler rotates the swing gate tab releasing the lockout lever for preventing further firing of the used cartridge housing.

A surgical fastener applying apparatus comprising a fastener supporting portion and a retainer supporting portion. The fastener supporting portion includes a first row of first surgical fasteners and a second row of second surgical fasteners. The retainer supporting portion includes a first row of first retainers and a second row of second retainers, the first fasteners engagable with the first retainers and the second fasteners engagable with the second retainers. The fasteners and retainers are configured so when engaged a first distance between at least one of the first fastener backspans and respective first retainer backspan is different than a second distance between at least one of the second fastener backspans and respective second retainer backspan.

A surgical fastener applying apparatus comprising a cartridge body including a plurality of fastener retention slots arranged in a plurality of rows including at least an inner row and an outer row, a plurality of surgical fasteners disposed in inner and outer rows and configured such that a plurality of fasteners disposed in the inner row have a backspan that has a greater height than a backspan of a plurality of surgical fasteners disposed in the outer row, and an anvil having an inner row and an outer row of depressions for forming the fasteners. A plurality of pushers are operably associated with the plurality of surgical fasteners and configured to eject the surgical fasteners toward a respective depression in an anvil for formation thereof such that upon formation, the plurality of surgical fasteners ejected from the inner row provide a greater compressive force to tissue than the plurality of surgical fasteners ejected from the outer row.

A surgical fastener cartridge is provided and includes a cartridge body having a plurality of surgical fasteners operatively disposed therein. An actuation mechanism is housed within the cartridge body and includes a plurality of pushers operably associated with the plurality of surgical fasteners. The actuation mechanism includes a plurality of pivotably connected link assemblies. Each link assembly being pivotably engaged with a corresponding bottom surface associated with each the pushers and a corresponding top surface associated with an internal channel housing and operably coupled to one another. The actuation mechanism includes an activation structure configured to move each of the link assemblies and sequentially cause each of the link assemblies to move through a succession of motions within the cartridge body, such that the link assemblies cause the corresponding pusher to contact and, subsequently, sequentially eject the associated surgical fastener towards the depression in the anvil.

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.

A surgical fastener cartridge is provided and includes a cartridge body having a tissue contacting surface that includes a plurality of fastener retention slots. A plurality of surgical fasteners is operatively disposed in the plurality of fastener retention slots. A plurality of pushers is operably associated with the plurality of surgical fasteners. Each pusher is configured for ejecting an associated surgical fastener towards a depression in an anvil. An actuation sled is housed within the cartridge body and includes a plurality of cam wedges. The plurality of cam wedges configured to sequentially contact the plurality of pushers such that a surgical fastener that is ejected closer to a cut line produces a greater compression force to stapled tissue than a surgical fastener ejected further from the cut line.

The present invention provides devices and methods for attachment of an implanted device, such as an artificial stoma device, a gastrointestinal sleeve device or an attachment cuff, within a patient's digestive tract for treatment of obesity. Special surgical fasteners provide a lasting and durable attachment to the gastrointestinal tissue without causing excessive pressure that could result in tissue erosion and detachment of the implanted device. Fastener delivery devices that facilitate peroral placement and deployment of fasteners and secondary devices are also provided. Also described are implantable devices and attachment means that avoid causing excessive pressure within the tissue by having compliance that is compatible with the gastrointestinal tissues where it is attached.