摘要:
A system for treating a vascular condition, including a hollow guidewire having a central lumen and an inflation hole formed in a sidewall of the hollow guidewire, an occlusion balloon attached proximate to a distal end of the hollow guidewire, and a frictional valve. The frictional valve includes a portion of a core wire positioned within a proximal end of the hollow guidewire, a valve plug attached to the core wire, and at least one frictional plug attached to the core wire proximal to the valve plug. Flow of fluid through the central lumen of the hollow guidewire is controlled by axial translation of the core wire to position the valve plug with respect to the inflation hole, while the frictional plug provides a tailored valve compliance characteristic.
摘要:
A guide sheath for use in guiding a vascular puncture closure device to and in registry with a vascular puncture includes a stabilization system having retention wires deployable from the sheath and engageable with the vessel wall. The retention wires pierce the vessel wall at spaced locations, proximally and distally, about the puncture and form anchors to retain the sheath in registry with the puncture.
摘要:
A device, system and method for treating cardiac valve regurgitation. The device includes a compression member disposed on a tube and a sleeve rotatably disposed about the tube and the compression member. The sleeve includes a side port, and is rotatable to align the compression member with the side port to transform the compression member from a delivery configuration to a compression configuration. One method includes positioning the compression member adjacent a cardiac valve and rotating the sleeve to align the compression member with the side port to release the compression member from the delivery configuration to the compression configuration to apply a compressive force to the cardiac valve.
摘要:
An occluder catheter having an outer tube, an inner shaft extending slidably through the outer tube, and two expanders attached, respectively, to the distal ends of the inner shaft and the outer tube. The expanders each have a plurality of circumferentially spaced, longitudinally oriented fingers. The fingers each have radially expandable ends and radially constrained ends and the fingers of each expander are interposed with the fingers of the other expander. A flexible non-porous sleeve covers at least the fingers of both expanders. By moving the outer tube with respect to the inner shaft, the occluder is transformable between a collapsed configuration and an expanded configuration wherein the fingers of at least one of the expanders are radially splayed to dilate the sleeve. One embodiment of the invention incorporates a single expander having circumferentially juxtaposed fingers, the expander being mated with a deflector ring.
摘要:
A surgical fastener for use in surgical procedures comprises a first member, a second member, and an anchor. Surgical materials may be secured within the surgical fastener. Methods of securing the surgical fastener to an anatomical structure are disclosed herein.
摘要:
A stapling system includes a tissue staple, a mandrel, and a pusher. The staple includes a crown at the proximal end and a plurality of prongs extending distally therefrom about a central axis of the staple. Each prong of the staple includes a tab extending towards the central axis. The mandrel receives the staple along an outer surface thereof. The mandrel includes a proximal groove adapted to receive the tab of the corresponding prong. The proximal groove includes a ramp from a proximal portion of the proximal groove to a distal portion of the proximal groove. The mandrel further includes a distal groove adapted to receive the tabs of the prongs and a distal anvil disposed distally of the distal groove. The pusher is disposed around the mandrel abutting and proximal to crown of the staple.
摘要:
An arteriotomy staple has tissue-engaging prongs arranged in groups each group comprising at least one primary prong and at leas one secondary prong. The secondary prongs are arranged to define a greater transverse span than the primary prongs to provide a back-up for engaging tissue about the arteriotomy in the event that the primary prongs do not work.
摘要:
Methods and apparatus are provided for moving an intraluminal filament, such as a shaft or hypotube. The actuator includes a housing having a channel therein, the channel having at least a first inclined surface. The actuator also includes a pivotable actuator assembly coupled to the housing and having first and second spaced-apart jaws extending into the channel. The first and second jaws define an opening of a first dimension therebetween. The actuator assembly pivots for urging at least one of the first and second jaws against at least the first inclined surface to transition the first dimension to a second dimension. The method comprises aligning the intraluminal filament between spaced-apart jaws of a pivotable actuator assembly, pivoting the actuator assembly to urge said jaws against at least one surface causing said jaws to grip the intraluminal filament, and further pivoting the actuator assembly to move the intraluminal filament.
摘要:
A stapling system includes a tissue staple, a mandrel, and a pusher. The staple includes a crown at the proximal end and a plurality of prongs extending distally therefrom about a central axis of the staple. Each prong of the staple includes a tab extending towards the central axis. The mandrel receives the staple along an outer surface thereof. The mandrel includes a proximal groove adapted to receive the tab of the corresponding prong. The proximal groove includes a ramp from a proximal portion of the proximal groove to a distal portion of the proximal groove. The mandrel further includes a distal groove adapted to receive the tabs of the prongs and a distal anvil disposed distally of the distal groove. The pusher is disposed around the mandrel abutting and proximal to crown of the staple.
摘要:
A surgical fastener for use in surgical procedures comprises a first member, a second member, and an anchor. Surgical materials may be secured within the surgical fastener. Methods of securing the surgical fastener to an anatomical structure are disclosed herein.