An excision apparatus for removing cellular tissue includes a housing provided with a fixation portion. The fixation portion is configured to be arranged on cellular tissue such that a closed space is formed by the cellular tissue and an inner surface of the fixation portion. The fixation portion is configured to fixedly retain the cellular tissue near the inner surface by removal of air from the closed space via an air evacuating means. The apparatus further includes a cutting element moveably arranged in the housing such that the cutting element is movable between a retracted position and an extended position with respect to the fixation portion. The cutting element includes an electrode arranged at a distal end of the cutting element and is configured for cutting a section of cellular tissue retained by the fixation portion when the cutting element is in the extended position.

Self-rolling mechanical apparatuses for removing material from a body lumen include a tractor tube portion that rolls and inverts over itself in a continuous motion, tractor-like, to draw material into the tractor tube, wherein the tractor tube rolls over itself without requiring any additional internal support at the distal-facing region of the tractor tube.

Self-rolling mechanical apparatuses for removing material from a body lumen include a tractor tube portion that rolls and inverts over itself in a continuous motion, tractor-like, to draw material into the tractor tube, wherein the tractor tube rolls over itself without requiring any additional internal support at the distal-facing region of the tractor tube.

Systems and methods can be employed for trans-tympanic membrane access to the middle ear for delivery of a therapeutic agent, for example, to the round window niche adjacent to the cochlea under direct visualization. The systems and methods can also be used to improve accessibility and visualization for various otological surgical procedures, such as, but not limited to, cholesteatoma removal, tympanic membrane repair and ossicular chain repair.

Systems and methods can be employed for trans-tympanic membrane access to the middle ear for delivery of a therapeutic agent, for example, to the round window niche adjacent to the cochlea under direct visualization. The systems and methods can also be used to improve accessibility and visualization for various otological surgical procedures, such as, but not limited to, cholesteatoma removal, tympanic membrane repair and ossicular chain repair.

A lead extraction tool includes a lever for enhanced mechanical advantage. A belt of the tool which causes rotation of a cutter on an end of a sheath can be driven both when a trigger of the handheld tool is squeezed and when the trigger is relaxed. A pair of winged engagers are carried upon a pedestal which moves with the trigger, with a driver coupled to a portion of the trigger causing a rear winged engager or a front winged engager to engage the belt, both when squeezing the trigger and when relaxing the trigger.

A lead extraction tool includes a lever for enhanced mechanical advantage. A belt of the tool which causes rotation of a cutter on an end of a sheath can be driven both when a trigger of the handheld tool is squeezed and when the trigger is relaxed. A pair of winged engagers are carried upon a pedestal which moves with the trigger, with a driver coupled to a portion of the trigger causing a rear winged engager or a front winged engager to engage the belt, both when squeezing the trigger and when relaxing the trigger.

An apparatus for treating skin has a console with a user input device and a handpiece assembly. The handpiece assembly is configured to treat skin. A fluid line provides fluid communication between the console and the handpiece assembly. A manifold system is coupled to the console and controlled by the user input device. The manifold system is configured to hold releasably a plurality of fluid sources and deliver fluid from at least one of the plurality of fluid sources to the handpiece assembly.

An apparatus for treating skin has a console with a user input device and a handpiece assembly. The handpiece assembly is configured to treat skin. A fluid line provides fluid communication between the console and the handpiece assembly. A manifold system is coupled to the console and controlled by the user input device. The manifold system is configured to hold releasably a plurality of fluid sources and deliver fluid from at least one of the plurality of fluid sources to the handpiece assembly.

A surgical instrument includes a stapling assembly and an anvil configured to cooperate to compress, staple, and cut tissue. The stapling assembly includes a deck member having a deck surface that faces distally and includes a plurality of staple openings configured to receive a plurality of staples, and a knife member having a distal end that defines a cutting edge. The anvil includes an anvil surface having a plurality of staple forming pockets configured to form the staples, and a washer positioned adjacent to the anvil surface and having a proximal face. The cutting edge of the knife member is configured to cut through the tissue and the proximal face when the surgical instrument is fired. The proximal face includes a tissue gripping feature configured to stabilize and inhibit the tissue from translating across the washer and the anvil surface during firing.