In various embodiments, a layer of material can comprise a body, a proximal end portion, and a distal end portion. The proximal end portion can be releasably secured to a staple cartridge of a surgical end effector, and the distal end portion can be releasably secured to an anvil of the surgical end effector. The layer of material can comprise a tissue thickness compensator.

A surgical suturing device has an elongate shaft has a proximal end, a distal end, and a longitudinal axis between the proximal and distal ends. An actuator is connected to the proximal end of the elongate shaft. A circular needle applier is on the distal end of the elongate shaft. The circular needle applier has an arced needle and a needle driver operatively connected to the actuator to rotate the arced needle in a circular path. A joint is positioned between the proximal and distal ends of the elongate shaft. The joint is operatively connected to the actuator to selectively articulate the shaft. A bearing is on the shaft positioned distally of the joint. The bearing is operatively connected to the actuator to selectively rotate the circular needle applier about the longitudinal axis.

An impeller for a pump is disclosed herein. The impeller can include a hub having a fixed end and a free end. The impeller can also have a plurality of blades supported by the hub. Each blade can have a fixed end coupled to the hub and a free end. The impeller can have a stored configuration and a deployed configuration, the blades in the deployed configuration extending away from the hub, and the blades in the stored configuration being compressed against the hub.

An impeller for a pump is disclosed herein. The impeller can include a hub having a fixed end and a free end. The impeller can also have a plurality of blades supported by the hub. Each blade can have a fixed end coupled to the hub and a free end. The impeller can have a stored configuration and a deployed configuration, the blades in the deployed configuration extending away from the hub, and the blades in the stored configuration being compressed against the hub.

An operation tool for a fluid injector includes a selective movement mechanism which moves the fluid injector between a first protruding position and a second protruding position in a housing of an outer cylinder. When the fluid injector is at the first protruding position, microneedles of a multi-microneedle device are protruded out to a first distance from the first open end. When the fluid injector is at the second protruding position to discharge a fluid via the microneedles, the microneedles are protruded out to a second distance from the first open end, which is shorter than the first distance. The selective movement mechanism includes a rotational-linear movement conversion mechanism which moves the fluid injector between the first and second protruding positions along a longitudinal center line of the outer cylinder based on a direction and an amount of rotation of the outer cylinder relative to the fluid injector.

A surgical retractor includes an elongate element defining an operational axis, a first blade secured to the elongate element and comprising a blade face, a second blade moveably secured to the elongate element, wherein the second blade defines a reference point located thereon, and wherein a movement of the second blade moves the reference point in a linear direction parallel to the operational axis and orthogonal to the blade face. A guide element may be removably located within an opening located on either the first blade or the second blade.

A device for use in bariatric surgery includes a tube member, a coupling member, and a rod member. The tube member includes a proximal portion and a distal portion having a distal end. The coupling member is affixed to the tube member. The rod member includes a proximal portion and a distal portion having a distal end. The rod member is slidably coupled with the coupling member. The distal end of the rod member is fixedly coupled to the distal end of the tube member. The proximal portion of the rod member is translatable relative to the tube member to transition the distal portion of the rod member between a contracted position, wherein the distal portion of the rod member extends along the distal portion of the tube member, and a deployed position, wherein the distal portion of the rod member bows outwardly relative to the tube member.

An impeller for a pump is disclosed herein. The impeller can include a hub having a fixed end and a free end. The impeller can also have a plurality of blades supported by the hub. Each blade can have a fixed end coupled to the hub and a free end. The impeller can have a stored configuration and a deployed configuration, the blades in the deployed configuration extending away from the hub, and the blades in the stored configuration being compressed against the hub.

A detent mechanism for controlling translation between two components in a longitudinal direction includes a resilient beam on one of the components and a rhomboid ramp member on the other component. The resilient beam is essentially straight when relaxed and has a first beam head and is arranged to interact in a ramped engagement with respectively one of two ramps. Each ramp is on one longitudinal side of the rhomboid ramp member such that application of a translative force between the components in one longitudinal direction with the first beam head engaged to one of the ramps in a first state deflects the resilient beam in one transversal direction and such that application of a translative force between the components in the other longitudinal direction with the first beam head engaged to the other one of the ramps deflects the resilient beam in the other transversal direction.

Some embodiments relate in part to endovascular prostheses and delivery catheter systems and methods for deploying same. Embodiments may be directed more specifically to graft bodies having self-expanding members, including inflatable graft bodies, and catheters and methods for deploying same within the body of a patient.