The present invention discloses a self-sealing cannula and methods of its use. The self-sealing cannula can be minimally invasively placed into the heart for drawing and/or returning blood with a self-sealing function at the interface of the blood access site. The disclosed cannula can be implemented as a single lumen cannula or a double lumen cannula, which can be used with ventricular assist devices for heart support or pump-oxygenators for ECMO and respiratory support. Through a self-sealing mechanism fixed on the ventricular wall or atrial wall, a cannula body is attached to the self-sealing fixture and blood is drawn into the lumen via an external pump and returned to the circulation system through a separate cannula. In the case of the double lumen cannula embodiment, the blood will be drawn into the drainage lumen of the double lumen cannula and returned through an infusion lumen at the desired location. The present invention achieves minimally invasive insertion without surgical sutures to the heart, and allows for optimal drainage of the blood from the heart. With use of the double lumen cannula, it prevents need for multiple cannulation sites, and greatly reduces the blood recirculation. Removal of the cannula is simplified without need for suturing or insertion of a plugging member.

A system and/or method for detecting a ferromagnetic object during surgery comprises a probe tip magnetoresistance device configured for insertion into a human or animal cavity and a probe base magnetoresistance device configured for remaining outside the cavity. The system and method detect the ferromagnetic object by comparing the electrical signals generated by the probe tip and the probe base magnetoresistance devices in response to the ambient magnetic field without generating a magnetic field to detect the ferromagnetic object.

An insertion device that allows gaining access to the left ventricle of the heart, via the tissue forming the wall of the right ventricle and via the ventricular septum, which includes a tubular shaft with a lumen extending there through, the shaft comprising distal, proximal and central sections, whereby the distal and proximal sections are disc-shaped extended thus forming each a double disc and whereby the central section links the distally placed double disc with the proximally placed double disc and whereby pressure valves are fixed inside the shaft preferably on its distal and proximal end.

A method includes inserting into a patient body a catheter, which includes an insertion tube and at least an expandable distal-end device coupled to a distal end of the insertion tube. The distal-end device is expanded in a blood vessel, thereby forming an annular guiding trench between the distal-end device and a circumference of the blood vessel, the annular trench shaped to receive and guide a distal tip of a medical instrument. The distal tip of the medical instrument is guided in the annular guiding trench formed by the expanded distal-end device of the catheter, so as to approach multiple points on the circumference of the blood vessel.

The present disclosure provides an access system having a maneuverable catheter assembly configured for providing access to and navigating a desired vessel for subsequent treatment thereof. The access system includes an adjustable delivery handle assembly and an access catheter subassembly having a maneuverable access catheter configured to be delivered to desired site (e.g., within duodenum) to assist in treatment of a condition (e.g., drainage of a bile ducts via Endoscopic Ultrasound Guided Biliary Drainage (EUS-BD) techniques). The access catheter includes at least a distal section having an adjustable portion along a length thereof configured to transition to a pre-defined arcuate shape to provide directional control over the distal end of the catheter as it is navigated through a vessel (e.g., bile duct). The handle assembly includes additional elements configured to allow a clinician to maneuver and manipulate the distal end of the access catheter.

Embodiments of the present disclosure are directed to implantable sealing devices, delivery apparatuses, and methods of their use, for closing surgical openings or defects in a sidewall of a vessel in a subject. In several embodiments, the disclosed implantable sealing devices, delivery apparatuses, and methods can be used to close a surgical opening in a sidewall of the heart.

A surgical access assembly includes an elongated cannula member having a proximal end portion and a distal end portion, a balloon anchor coupled to the distal end portion of the elongated cannula member, a sleeve of the balloon anchor extending proximally along an outer surface of the elongated cannula member, a chamber defined between the sleeve of the balloon anchor and the outer surface of the elongated cannula member, and a first collar is coupled to the elongated cannula member. The first collar is slidable along the elongated cannula member and engageable with the sleeve of the balloon anchor.

The Robotic Double Cannulation Cannula is a laparoscopic cannula that will be docked to the Si, X or Xi da Vinci Surgical Systems® (Intuitive, Sunnyvale Calif.) and then placed through an EndoWrist 12 mm & Stapler Cannula® (Intuitive, Sunnyvale Calif.). This provides ease of insertion and extraction of surgical materials, such as suture and mesh, along with specimen extraction, without having to undock the robotic arm. Once inserted, the Robotic Double Cannulation Cannula remote center of movement will match the remote center of movement of the EndoWrist 12 mm & Stapler Cannula® (Intuitive, Sunnyvale Calif.) to prevent injury to the abdominal wall musculature. An electrical contact on the intern tip of the Robotic Double Cannulation Cannula will provide electrical grounding to the outer cannula to prevent electrical injury.

Embodiments are described for creating and closing tissue access ports or defects, such as transapical access ports, which involve placement of an elongate prosthesis in a helical configuration across the tissue structure site to be crossed, and confirmation that such helical suture configuration is positioned appropriately, before further interventional steps. A plug member may be included to assist with closure of the ports of defects. The elongate prosthesis and plug member may comprise bioresorbable materials.

Devices, systems and methods are described herein for sealing openings in an anatomical wall. A sealing system includes an elongate tubular support for delivery to an anatomical opening to be sealed, a cover of bio-compatible material covering a distal portion of the tubular support, and an anchor assembly, the anchor assembly being designed to secure the cover material to the opening. The anchor assembly can include a plurality of distal anchors and a plurality of proximal anchors, a button, ring or donut, and/or a C-clip. In some embodiments, the system further comprises a closure member for closing off an end of the cover material after removal of the tubular support.