71 results about "Arteriotomy" patented technology

A valve delivery device is provided. The device comprises a heart valve prosthesis support having a proximal portion and a distal portion; a plurality of fasteners ejectably mounted on the support; a heart valve prosthesis being releasably coupled to said distal portion of said heart valve prosthesis support; and where the heart valve prosthesis and support are configured for delivery to the heart through an aortotomy formed in the patient's aorta. The device may include an anvil movable along a longitudinal axis of the device to engage tissue disposed between the anvil and the valve prosthesis.

A closure device for an arteriotomy includes an elongate hollow shaft and an elongate driver slidably disposed therein. The elongate hollow shaft includes a pair of a pair of opposing actuation tips disposed at a distal end thereof defining a staple chamber there between. An anvil extends into the staple chamber from one of the actuation tips. The closure device includes a release mechanism for spreading apart the pair of opposing actuation tips to provide a gap associated with the anvil, the gap dimensioned such that the staple may pass there through. A method of using the closure device is also disclosed.

A targeting catheter is used to locate an arteriotomy, such as is formed during a femoral artery catheterization procedure. The targeting catheter includes one or more targeting aids, such as an inflatable balloon or sensor (e.g., Doppler or temperature sensor), to locate the arteriotomy. The targeting aid may be positioned at the arteriotomy. An ultrasonic beacon on the catheter may then be located relative to a therapeutic ultrasonic applicator (e.g., by using acoustic time-of-flight) so that the focus of ultrasonic energy from the applicator can be aligned with the arteriotomy.

A method for closing an arteriotomy includes providing a guiding system and a closure system. The guiding system is mounted over a dilator, and advanced along a guidewire through the arteriotomy and into the blood vessel lumen. The guiding system includes two stabilization wire guides. A retention foot is disposed at a distal portion of each stabilization wire guide, the foot being deployable into contact against an inner surface of the vessel wall. The guidewire and dilator are withdrawn from the patient, leaving the stabilization wire guides in place. The closure system carries a stapler and is advanced along the stabilization wire guides to an extraluminal position. The stapler is then activated to close the arteriotomy. The retention feet are undeployed and the guiding and closure systems are withdrawn from the body, leaving a staple to hold the arteriotomy closed.

A system for making a precise incision and circular hole in a vessel wall, such as the aorta, that eliminates lateral side notches from the aortotomy. In one aspect, the system includes a surgical knife or lancet having a blade surrounded by a retractable shield. In one aspect, the system includes a tissue punch having a rotating circumferential edge for receiving a parabolic-shaped anvil having an anvil cutting edge. The anvil is placed through an incision made by a knife and actuated to produce a hole in the vessel wall.

A sealing device incorporating a block and tackle for assisting in sealing an internal tissue puncture with an internal and external component. The block and tackle provides a mechanical advantage multiplying an initial force to facilitate compression of the internal and external component together across the internal tissue puncture. The internal and external components may be an anchor and collagen sponge, respectively. The internal tissue puncture is generally an arteriotomy intentionally created in order to perform a vascular procedure. The ability to exert a greater compression force across the arteriotomy eliminates a tamping tube common to prior internal tissue puncture closure devices, and also eliminates additional steps heretofore common to sealing internal tissue punctures. The steps eliminated by application of the principles described herein include tamping the collagen sponge, attaching a tamping spring between a tamping tube and a filament connecting the anchor to the collagen sponge, and later removing the tamping spring.

The disclosure provides a modified arteriotomy closure plug, said modification selected from the group consisting of a slit, a notch, a groove, and combinations thereof and a method of manufacturing the arteriotomy closure plug.

A radial closure device has a compression element to place compression force against the radial access site. The invention further comprises an occlusion element that places an occlusion force against the ulnar artery to reduce blood pressure at the arteriotomy site and increase blood flow in the radial artery thereby reducing radial artery occlusion and reducing the time and compression force to achieve hemostasis. A radial restriction element can also be placed upstream of the access site to further reduce radial blood pressure at the arteriotomy site.

An apparatus and method for closing an arteriotomy site is disclosed. The apparatus includes inner and outer frames adapted to sandwich a blood vessel wall therebetween. The inner and outer frames may be manufactured from memory metals such that they can be compressed during the insertion into the tissue tract proximate the arteriotomy site, and then deployed into an expanded configuration larger than the dimensions of the arteriotomy opening itself. A universal joint connects the inner and outer frames to ensure proper pivoting therebetween. In addition, polymeric coverings can be provided on the inner and outer frames to ensure closure, while a collagen plug can also be provided between inner and outer frames to facilitate closure as well.

An apparatus and method for closing an arteriotomy site are disclosed. The apparatus and method employ the use of a delivery sheath within which is provided an anchoring device formed of memory metal. The delivery sheath can be inserted through a tissue tract extending from an epidermal layer to the blood vessel wall, whereupon the anchoring device can be extended from the delivery sheath into the blood vessel itself The memory metal, once freed from the delivery sheath, obtains a non-linear or coiled configuration which can then be pulled back against the inner surface of the blood vessel to form a backstop. A biodegradable plug is then introduced into the tissue tract until it engages the backstop formed by the anchoring device thereby ensuring proper positioning of the biodegradable plug. The anchoring device can then be retracted through the biodegradable plug leaving the arteriotomy site substantially closed with hemostasis being formed therearound The various biodegradable plugs disclosed provide for improved retention of the biodegradable plug and proper positioning of the plug within the tissue tract.

Devices and methods for closing an arteriotomy include a percutaneously placeable central tube deployable about the arteriotomy by which an array of radially expandable fingers having suction ports can be engaged with the surface of tissue about the arteriotomy enabling the fingers to grip the tissue without piercing it. A delivery tube can advance a closure element along the outside surface of the central tube, thereby radially contracting the fingers and puckering the gripped tissue to approximate the edges of the arteriotomy. The closure element is further advanced until it is forced off of the distal tips of the fingers such that the closure element surrounds the puckered tissue and secures permanent closure of the arteriotomy.

A closure device for an arteriotomy includes an elongate tube having a distal opening. The elongate tube has least two opposing longitudinal slots and a pair of opposing corners defined where each slot meets the distal opening. A staple is disposed within the tube, the staple having at least two opposing legs aligned with the at least two slots. Each slot is pinched together adjacent the distal opening such that the opposing corners of each slot converge to cover the tip of the respective staple leg to guard the staple tips against contact with the tissue track. The corners of each slot are separable to permit the respective staple leg to pass there between.

An inventive flanged graft for end-to-side anastomosis includes a tubular graft member and a flanged section The type and size of the flanged section is determined by various factors such as identity of the receiving artery, position of the arteriotomy on the receiving artery, and luminal diameter of the graft. The graft is preferably anastomosed to the receiving artery using continuous sutures to join the arteriotomy to the peripheral edges flanged section.

A low profile stent device consisting of a stent plus an optional covering is placed percutaneously into a blood vessel to provide vascular closure to a nearby large diameter arteriotomy site. A self-expanding stent device is mounted onto a balloon for postdilitation and is held in a small diameter configuration by an outer case. A balloon expandable stent device has hinge and strut features that provide it with crush resistance. The cone and sheath of the deliver catheter serves as a dilator and introducer sheath to assist in delivery. An attachable guidewire reduces profile by eliminating a guidewire lumen. A locator balloon placed through the large diameter arteriotomy introducer sheath assists positioning.