An aspiration thrombectomy system, comprising a vacuum source comprising a controllable vacuum valve, a pressure source comprising a controllable pressure valve, an aspiration catheter having a proximal end and a distal end, wherein the proximal end of the aspiration catheter comprises connection tubing having a lumen configured to accommodate fluid, and wherein the connection tubing acts as a common conduit for fluid communication between the aspiration catheter and the vacuum and pressure sources via the vacuum and pressure valves, respectively, and a controller configured to open and close the vacuum and vent valves in a predetermined cycle to change a level of vacuum at the distal end of the aspiration catheter and control flow in and out from the distal end of the catheter.

A surgical access assembly includes a surgical access device having a cannula tube, an expandable balloon positioned in a distal region of the cannula tube, and an inflation assembly positioned in a proximal region of the cannula tube. The inflation assembly has a port and a check valve. The port is in fluid communication with the expandable balloon and the check valve is transitionable between rest and actuated configurations. A syringe includes a barrel with a chamber and a plunger slidably disposed in the chamber. An extension of the barrel is configured for releasably engaging the check valve. The plunger also includes a release feature that is engageable with the check valve to transition the check valve from the rest configuration to the actuated configuration.

A medical device for accessing body tissue or fluid is disclosed. The medical device may include an introducer sheath and a valve that impedes the flow of fluid through the introducer sheath. An assembly for selectively coupling components of a medical device is also disclosed. The assembly may comprise two components configured to engage with one another by at least a snap fit-type connection. This connection may facilitate disengagement of the two components via actuation of a release mechanism.

A surgical access device includes an instrument valve housing including a cannula extending distally from the instrument valve housing. The cannula defines a longitudinal axis. An anchor is supported at a distal end portion of the cannula. A retainer is configured to be removably engaged with cannula. The retainer includes a first member defining a semi-circular shape. The first member defines a first arm having a first lateral surface, and a second arm having a second lateral surface. A first magnet is positioned in the first arm and a second magnet is positioned in the second arm. A second member defines a semi-circular shape. The second member defines a third arm having a third lateral surface, and a fourth arm having a fourth lateral surface. A third magnet is positioned in the third arm and a fourth magnet is positioned in the fourth arm.

A method for controlling gas composition in a surgical cavity during an endoscopic surgical procedure includes monitoring for a plurality of gas species in a gas flow from a surgical cavity of a patient. The method includes measuring the plurality of gas species in the gas flow from the surgical cavity and determining if the gas species measured in the gas flow from the surgical cavity are each present and/or within a respective desired range. The method includes adding gas into the surgical cavity if one or more gas species in the plurality of gas species is outside of the respective desired range so as to bring a composition of gas species in the surgical cavity within the respective desired range.

Systems and methods for pressure sensors being located in various components of a surgical medical gases delivery system (such as for laparoscopic surgery) are disclosed. The pressure sensors can enable gas supply (either of a surgical medical gases delivery system or supplementary to such a system) to sense pressure so as to safely insufflate the surgical cavity in a controlled manner. Advanced pressure sensing can also be provided to achieve specific flow algorithms and/or non-standard flow patterns that may help achieve functionality for mitigating smoke accumulation in the surgical cavity and/or impairment to vision, and helping to improve stability in the surgical cavity. The pressure sensing disclosed herein can allow for more control over the fundamental aspects of gas control and supply in the surgical gas delivery system, better performance, and outcomes of the surgery, and better incorporation of a humidification therapy.

An aspiration thrombectomy system, comprising an aspiration catheter having a proximal end and a distal end, wherein the proximal end of the aspiration catheter comprises a lumen configured to accommodate fluid, a vacuum source comprising a controllable vacuum valve, and a controller configured to detect a change in a connection between the aspiration catheter and the aspiration thrombectomy system, wherein the controller is further configured to change a pulsation protocol associated with the aspiration catheter responsive to the change in the connection between the aspiration catheter and the aspiration thrombectomy system, wherein the pulsation protocol specifies pressure variations and pressure patterns to modulate the vacuum valve to change a level of vacuum at the distal end of the aspiration catheter.

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.

A surgical access device sterilizes tissue at a surgical site and/or the air at the surgical site. The surgical access device may include a cannula including an elongated shaft having a fluid delivery channel defined therein, a fluid delivery port coupled to the cannula and in fluid communication with the fluid delivery channel, and a porous sleeve disposed around the elongated shaft and in fluid communication with the fluid delivery channel. The fluid delivery channel provides a pathway for fluid flow (e.g., an anti-infective agent) from the fluid delivery port into the porous sleeve. The surgical access device may include a cannula including an elongated shaft having an anti-infective agent disposed therein. The surgical access device may include an instrument housing secured to a cannula, and a light source (e.g., an air sanitizing light source) disposed within a cavity of the instrument housing.

An intrathecal needle closed system for spinal needle that reduces the incidence of Post Dural Puncture Headache (PDPH) and infection. The intrathecal needle closed system generally includes closed system with CSF indicator, CSF indicator port, introducer needle, standardized needle size, and re-insertable stylet in closed system.