Cannula devices, systems, and methods are provided for introducing one or more instruments into a patient's body to perform a procedure. In one example, the cannula device includes first and second housings defining a throughbore, and a plurality of elongate members extending distally from the housings, the elongate members cooperatively defining a passage axially aligned with the throughbore between proximal ends and distal tips of the elongate members. The first housing is moveable in an axial direction with respect to the second housing to cause the proximal ends of the elongate members to move outwardly to increase a size of the passage and, optionally, may taper when expanded. Optionally, one or more secondary devices, e.g., an obturator with a sharpened tip, or an obturator and tubular access device may be provided that may be inserted through the throughbore into the passage before expansion of the passage.

Surgical visualization systems and related methods are disclosed herein, e.g., for providing visualization during surgical procedures. Systems and methods herein can be used in a wide range of surgical procedures, including spinal surgeries such as minimally-invasive fusion or discectomy procedures. Systems and methods herein can include various features for enhancing end user experience, improving clinical outcomes, or reducing the invasiveness of a surgery. Exemplary features can include access port integration, hands-free operation, active and/or passive lens cleaning, adjustable camera depth, and many others.

The present invention generally relates to a retractor. Specifically, this invention relates to a malleable retractor designed to retract soft tissue and create a surgical opening to provide visualization of and access to the spine.

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.

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.

An apparatus for neurovascular endoluminal intervention, in particular for the treatment of ischemic stroke, is provided. The apparatus comprises a catheter (2) for insertion into the circulatory system (CS) of a patient, in order to aspirate one or several dots (C) present in the circulatory system (CS). A distal outer section (22) of the catheter (2) comprises an unexpanded state, in which the diameter (D2) of the distal outer section (22) is smaller than the diameter (D1) of a proximal outer section (21) of the catheter (2), in order to facilitate navigation of the catheter through the circulatory system, and a radially expanded state, in order to facilitate aspiration of the one or several clots (C) through the catheter (2). Furthermore, a method for applying such an apparatus is provided.

A single-port surgical device includes a housing and one or more cannulas. The housing includes a proximal port and a distal port, the one or more cannulas include an inner cannula section and an outer cannula section, the inner cannula section is located in the housing and communicates with the distal port of the housing, the outer cannula section is located outside the proximal port of the housing, and at least a portion of the outer cannula section of at least one cannula of the one or more cannulas is deformable in a radial direction, an axial direction or the radial direction and the axial direction of the outer cannula section.

A cannula reducer can include a sleeve having a proximal end and a distal end. The sleeve can be configured to be inserted into a cannula. The sleeve can have an interior passage configured to receive a surgical instrument. The proximal end of the sleeve is configured to attach to the surgical instrument.

An apparatus for neurovascular endoluminal intervention, in particular for the treatment of ischemic stroke, is provided. The apparatus comprises a catheter (2) for insertion into the circulatory system (CS) of a patient, in order to aspirate one or several clots (C) present in the circulatory system (CS). A distal outer section (22) of the catheter (2) comprises an unexpanded state, in which the diameter (D2) of the distal outer section (22) is smaller than the diameter (D1) of a proximal outer section (21) of the catheter (2), in order to facilitate navigation of the catheter through the circulatory system, and a radially expanded state, in order to facilitate aspiration of the one or several clots (C) through the catheter (2). Furthermore, a method for applying such an apparatus is provided.

Methods of chest tube insertion include using an insertion device including a semi-rigid curvilinear sheath body having a distal end and a proximal end, a lumen defined axially through the sheath body from the distal end to the proximal end, the lumen including a distal end opening at the distal end and a proximal end opening at the proximal end, and a tapered tube clamp at the distal end of the sheath body, the tube clamp including one or more clamp tabs angled radially inward toward the distal end opening. The chest tube insertion device is supported during insertion into the chest cavity by a stylet. The chest tube insertion device is also removable from a chest tube when a free end of the chest tube is positioned in the chest cavity of a patient while suction is maintained.