92 results about "Endovascular surgery" patented technology

The present invention discloses devices and methods for performing intravascular procedures with out: cardiac bypass. The devices include various embodiments of temporary filter devices, temporary valves, and prosthetic valves. The temporary filter devices have one or more cannulae which provide access for surgical tools for effecting repair of the cardiac valves. A cannula may have filters of various configurations encircling the distal region of the cannula, which prevent embolitic material from entering the coronary arteries and aorta. The temporary valve devices may also have one or more cannulae which guide the insertion of the valve into the aorta. The valve devices expand in the aorta to occupy the entire flow path of the vessel. In one embodiment, the temporary valve is a disc of flexible, porous, material that acts to filter blood passing therethrough. A set of valve leaflets extend peripherally from the disc. These leaflets can alternately collapse to prevent blood flow through the valve and extend to permit flow. The prosthetic valves include valve fixation devices which secure the prosthetic valve to the wall of the vessel. In one embodiment, the prosthetic valves have at least one substantially rigid strut, at least two expandable fixation rings located about the circumference of the base of the apex of the valve, and one or more commissures and leaflets. The prosthetic valves are introduced into the vascular system a compressed state, advanced to the site of implantation, expanded and secured to the vessel wall.

The present invention provides intravascular embolic protection apparatus including a blood filter element having an accommodating passageway adapted to permit passage of a procedure device therethrough and to substantially seal against passage of particles between the embolic protection apparatus and the procedure device by accommodating to a size and shape of the procedure device. Furthermore, the present invention provides a method of performing an endovascular procedure on a patient including the steps of delivering an embolic protection apparatus to a location within a vascular lumen of the patient; passing a procedure device through an accommodating passageway of the apparatus, the accommodating passageway accommodating to a size and shape of the procedure device; performing the endovascular procedure; and removing the procedure device from the patient.

A method and system of performing an intravascular procedure at a treatment site in a vessel of a patient. A device creates a seal to prevent the flow of blood during the treatment of vascular disease. A seal may be formed between the distal inside diameter of a sheath or catheter such as a guide catheter as well as within a vessel, such as an artery or vein. An elongated device having a distal portion extending from the catheter and having a fluid impermeable membrane disposed about at least the distal end of the device is used to seal the vessel. The system includes a device to occlude blood flow and a distal protection device to filter or remove embolic debris.

An intravascular filter device for use in capturing debris which may occur as a result of an intravascular procedure. The filter device includes a proximal section, a distal section and a mid-section. The mid-section includes three rings configured in a sixteen apices alternating V-pattern. The filter device specifically embodies structure that provides enhanced radial opening and angular resistance to collapse in its expanded state. While, in its compressed state the filter device provides an extremely small compressed profile giving it the desired ability to be delivered into very small vessels of the human vasculature.

Procedures may be performed on the heart after the installation of a mitral valve fixation device. In order to prepare the heart for such procedures, the fixation device may be removed or disabled in minimally invasive ways (e.g., through an endovascular procedure), without requiring open access to the heart. The fixation device may be partitioned so that one portion may remain attached to each leaflet of the mitral valve. In another example, the leaflets may be cut along the edges of the distal element(s) of the fixation device, so as to cut the fixation device from the leaflet(s). Systems and devices for performing such procedures endovascularly are disclosed. Fixation devices with improved access to a release harness are also disclosed.

An endovascular surgical device is disclosed for attaching an endovascular prosthesis to a vascular wall. The device includes a tubular member and an applicator device. The tubular member has longitudinal bands separated by slots that are configured to expand upon being placed in compression. The applicator device has a distal end with a rotary head for applying sutures. A portion of the suture is at least partially positioned in the rotary head. A method is described that includes positioning a prosthesis and an endovascular device within a portion of vascular wall that requires reinforcing or repairing. The tubular part is expanded, forcing the prosthesis and vascular wall to expand. The applicator device applies the suture to attach the prosthesis to the vascular wall. Additional sutures can be applied by removing the applicator device, attaching a second suture and repositioning the applicator device to attach a second suture.

A method for guiding stent deployment during an endovascular procedure includes providing a virtual stent model of a real stent that specifies a length, diameter, shape, and placement of the real stent. The method further includes projecting the virtual stent model onto a 2-dimensional (2D) DSA image of a target lesion, manipulating a stent deployment mechanism to navigate the stent to the target lesion while simultaneously acquiring real-time 2D fluoroscopic images of the stent navigation, and overlaying each fluoroscopic image on the 2D DSA image having the projected virtual stent model image, where the 2D fluoroscopic images are acquired from a C-arm mounted X-ray apparatus, and updating the projection of the virtual stent model onto the fluoroscopic images whenever a new fluoroscopic image is acquired or whenever the C-arm is moved, where the stent is aligned with the virtual stent model by aligning stent end markers with virtual end markers.

An intraluminal catheter, such as a guiding catheter, employed for intravascular procedures and having an inner liner formed of expanded Ultra High Molecular Weight Polyethylene (UHMWPE) is disclosed. The expanded UHMWPE is microporous and has an oriented microstructure structure characterized by nodes interconnected by fibrils. The inner liner formed of expanded UHMWPE is very thin to maximize the inner lumen diameter and has excellent mechanical properties.

In accordance with the present invention, a distal protection and embolic material retrieval device with improved apposition to both large and small vessel walls of varying geometries for enhancing the filtering of embolic material during intravascular procedures while allowing for the passage of blood is provided. The device includes a filter basket designed to maximize apposition of the filtering portion to that of the vessel wall and may include struts which provide circumferential support to the filtering membrane and thereby minimizing or eliminating in-folding of the filter basket. Thin film materials may also be utilized for the filtering membrane of the filter basket. In addition one can incorporate biological and/or pharmaceutical agents in combination with the present invention.

The present invention includes systems, devices and methods for percutaneously forming an aperture within a tissue structure or vessel and closing the aperture in a manner which optimizes hemostasis and healing. The invention in one aspect includes implantable devices which are used to seal the tissue aperture upon closure of the aperture after a percutaneous or endovascular procedure.

An endovascular surgical method comprises the steps of (1) incising a patient to gain access to the interior of a selected blood vessel, (2) inserting a cannula through an aperture formed in a sealing member comprising an elastomeric membrane having an aperture for receiving the cannula, an elongated wall portion surrounding the aperture, an outer flange region, an expandable bellowed intermediate portion between the flange region and the elongated wall portion, and a layer of adhesive on the bottom surface of the flange region, (3) orienting the membrane so that the bottom surface of the flange region contacts the patient's skin when the cannula is inserted through the incision, the aperture and cannula being relatively sized to form a tight fit and seal around the cannula, and (4) perform surgery from within the selected blood vessel by inserting and withdrawing surgical instruments through the cannula to so that the intermediate membrane portion resiliently supports the cannula for movement against its elongated wall portion without transmitting stress to the flange portion that would cause the flange portion to pull away from the patient's skin.

A filter device for temporary placement of a filter in an artery or vein is disclosed. The devices include (1) an elongate tubular member having a single or double side-wire loop, (2) an elongate member having a filter bonded to a circular rim joined by a plurality of tethers and an independently moveable tether, and (3) an elongate member having a parachute filter joined by a plurality of flexible struts. The filter conforms to the interior of a vessel wall when expanded and contracts to a consistent diameter without bunching when stowed. The filter devices may act as guidewires for guiding a therapeutic catheter to a region of interest within a vessel. Methods of using the filter device to entrap and remove embolic material from a vessel during endovascular procedures are also disclosed.

An intracorporeal catheter such as a guiding catheter employed for intravascular procedures which generally has an elongated catheter shaft with a polymeric wall with a multistrand reinforcing structure wherein the strands at a plurality of cross point locations of the reinforcing structure are secured together to hold at least part of the braided reinforcing structure in a desired shape for utilization. The strands may be metallic or polymeric or mixtures thereof. The strands can be secured together at the cross points thereof by a variety of ways. In one embodiment a plurality of the strands forming the reinforcing structure are formed of metal and are provided with a coating of solder so that the strands can be secured together by applying heat to the strands at the cross point locations to melt the solder and allow a solidified solder connection between the strands to be formed upon cooling while holding at least the portion of the reinforcing structure having secured cross points while holding the portion of the reinforcing structure in the desire shape. Other embodiment involve other methods of securing the strands at the cross points including welding, brazing, adhesives or mechanical connections.

The present invention concerns a flexible stapling device (1). More particularly, this invention concerns a flexible endovascular stapling device (1) for an intavascular procedure such as patent foramen ovale closure, which is designed to avoid open heart surgery by permitting the closure of the defect utilizing a stapling means (26) which is positioned by using a flexible shaft/guidewire system.

Systems for the stabilization of visualization catheters are described herein which facilitate the deployment and retraction of an imaging hood from a catheter. Such systems may include a deployment catheter and an imaging hood having one or more structural elements which may be integrated or advanced into the hood independently of the hood itself. Moreover, additional features such as rapid exchange ports may be integrated along the hood or along the catheter proximal to the hood to facilitate intravascular procedures and treatments.

Vascular filters and deflectors and methods for filtering bodily fluids. A blood filtering assembly can capture embolic material dislodged or generated during an endovascular procedure to inhibit or prevent the material from entering the cerebral vasculature. A blood deflecting assembly can deflect embolic material dislodged or generated during an endovascular procedure to inhibit or prevent the material from entering the cerebral vasculature.