A surgical access device includes a seal assembly, an upper housing portion, a lower housing portion, and a tubular member. The seal assembly has an instrument seal and is coupled to the upper housing portion. A first valve is partially disposed in an upper chamber of the upper housing portion and a second valve is partially disposed in a lower chamber of the lower housing portion. A valve assembly extends from the upper housing portion and is in fluid communication with the upper chamber. A source of insufflation fluid is attachable to the valve assembly.

The present invention generally provides methods and devices for removing fluid from a surgical instrument. Surgical access devices and seal systems are generally provided having one or more valves or seal assemblies to create a closed system between the outside environment and the environment in which the surgical access device is being inserted. The devices of systems can also include a fluid remover in the form of a sorbent element, a scraper element, a wicking element, or any combination thereof that is configured to remove fluid from a working channel of the device or system and/or from a surgical instrument inserted therethrough.

The surgical robotic access system provides access for robotic instruments and/or actuators including the introduction, operation and withdrawal of such robotic manipulators into a body cavity without permitting the escape of pressurized fluid or gas. The surgical robotic access system also provides a multi-faceted range of movement without touching or effecting pressure on the opening in the patient's body cavity.

A valve assembly (1, 12, 21, 31, 44, 52, 60) includes a hollow tube (2). The valve assembly (1, 12, 21, 31, 44, 52, 60) also includes a first set of one or more valves (3) 5 arranged within the hollow tube (2). The first set of valves (3) is configured to permit sliding passage of a substantially cylindrical object (4). The valve assembly (1, 12, 21, 31, 44, 52, 60) also includes a second set of valves (5) arranged within the hollow tube (2) and spaced apart from the first set of valves to (3) define a chamber. The second set of valves (5) are configured to permit sliding passage of the cylindrical object (4). The 10 valve assembly (1, 12, 21, 31, 44, 52, 60) also includes one or more ultraviolet light sources (10) within the chamber (6) and/or a first port (13) connecting the chamber (6) to the exterior of the hollow tube (2) and configured for connection to a fluid flow path (14) for supply and/or extraction of fluid (19).

A cannula for use in an access assembly includes an instrument valve housing including first and second housing sections and defining a cavity and a valve assembly disposed within the cavity of the instrument valve housing. The valve assembly includes a seal assembly including an outer flange and a septum seal extending across the outer flange, a guard assembly disposed within the outer flange of the seal assembly, and a centering mechanism. The guard assembly includes a plurality of guard members. Each guard member of the plurality of guard members includes a ring portion and a flap portion. The flap portions of the guard members of the guard assembly are configured to engage and stretch the septum seal during reception of a surgical instrument through the valve assembly.

A surgical access device includes a housing having a tubular member extending therefrom. The tubular member has inner and outer walls defining an annular lumen therebetween. A passageway extends between proximal and distal openings of the tubular member. The passageway is configured to receive a surgical instrument therethrough. A conduit is disposed in the annular lumen and includes spiral segments where each spiral segment is engaged with an adjacent spiral segment. The conduit is flexible in a first state and is fixed in a second state. A valve assembly is coupled to the housing and includes a port that is in fluid communication with the annular lumen. The port is attachable to a source of fluid.

Systems for insufflation and recirculation of insufflation fluid in a surgical procedure include a control unit having a fluid pump, a supply conduit, a return fluid conduit and a pressure-controlled valve. The pressure-controlled valve is in fluid communication with an insufflation gas supply, the supply conduit and the return conduit and is adapted and configured to respond to pressure control signals to adjust position and thereby system flow parameters, to reduce entrainment of air from the surrounding environment, and to increase the concentration of insufflation gas in an operative space, and/or to reduce an overpressure condition in the operative space.

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.

A vacuum aspiration control system for use with a vacuum source and an aspiration catheter includes a connecting tube configured to connect the vacuum source with a lumen of an aspiration catheter. An on-off valve is operatively coupled to the connecting tube, and a sensing unit is configured to detect flow within the connecting tube and provide a signal representative of flow. A controller receives the signal to decide whether to open or close the valve. The controller may automatically close the valve to stop flow when flow through the connecting tube is unrestricted, or according to a predetermined timing sequence. The controller can further periodically open a closed valve to determine whether flow has entered an acceptable range. The controller can still further engage pulsed aspiration with a pressure manipulation assembly when flow is restricted or occluded.

Disclosed herein are surgical instruments used in ophthalmic surgical procedures and associated methods. Particular embodiments relate to a cannula assembly having a cannula tip that is retractable. The cannula assembly may comprise a cannula hub. The cannula assembly may further comprise an outer tube that extends from a distal end the cannula hub. The cannula assembly may further comprise an inner tube that extends from the distal end of the cannula hub and is disposed in the outer tube, wherein the inner tube has a cannula tip that extends from the outer tube and is retractable into the outer tube.