摘要:
A surgical instrument for applying sutures to tissue includes a needle deployment mechanism and a catch mechanism. In some embodiments, the needle deployment mechanism employs a linear path. Alternatively, it can employ a curved needle. The surgical instrument may include a rotatable head, a bend, and/or a malleable elongated body member formable into various shapes.
摘要:
An intravascular, distal protection device including a braided mesh that may be selectively transformed between a collapsed configuration, a filter configuration and an occlusive configuration by mechanical or thermal operation. Alternatively, the distal protection device may include a non-inflatable occlusion valve located within the mesh and actuated by the same mechanical operation that transforms the braided mesh.
摘要:
A guiding catheter includes an elongate shaft with a central bore and a mechanically expandable occluder mounted about the distal end of the shaft. The occluder comprises a flexible membrane supported by an expandable tubular frame. The guiding catheter has a pre-formed curve adjacent the distal end of the shaft. A sheath disposed about the catheter is selectively slidable along the catheter shaft to expand the occluder into sealing engagement with the wall of an artery to provide hemostasis in the artery. Methods of using the guiding catheter are also disclosed.
摘要:
A system for treating a vascular condition, including a hollow guidewire having a central lumen, a core wire received in the central lumen of the hollow guidewire and partially extended from a proximal end of the hollow guidewire, an inflatable balloon attached proximate a distal end of the hollow guidewire, a detachable inflation adaptor, and a clamping device. The inflation adaptor includes an axial insertion block having a funnel-shaped receiver to guide the extended core wire into the axial insertion block. The clamping device is axially aligned with the receiver. The extended core wire and the hollow guidewire are translated relative to each other to control a flow of inflation fluid into the inflatable balloon while the clamping device is in a clamped position. An inflation adaptor and a method of operation are also disclosed.
摘要:
An embolic protection apparatus having a deflector tube and two expanders each having a plurality of circumferentially spaced, longitudinally oriented fingers. The fingers of each expander have radially constrained ends and radially expandable ends aligned opposite the fingers of the other expander. The deflector tube is disposed within one of the expanders that also has a flexible sleeve covering at least the fingers of the expander. The deflector and the expanders are engageable with each other using compound leverage to transform the apparatus between a collapsed configuration and an expanded configuration wherein the fingers of the covered expander are radially splayed to dilate the sleeve. Also disclosed are a catheter having the protection apparatus and a method of using the catheter.
摘要:
An intravascular, distal protection device including a braided mesh that may be selectively transformed between a collapsed configuration, a filter configuration and an occlusive configuration by mechanical or thermal operation. Alternatively, the distal protection device may include a non-inflatable occlusion valve located within the mesh and actuated by the same mechanical operation that transforms the braided mesh.
摘要:
A catheter for use in a body lumen including a guidewire shaft having a guidewire shaft sectional portion. The guidewire shaft sectional portion is disposed along a proximal and/or distal portion of an elongate catheter shaft for holding a guidewire in place thereon. The guidewire shaft sectional portion includes at least two clips or segments along the catheter shaft that are separated by a gap. The clips hold the guidewire in place along the catheter, and the gap between adjacent clips allows a clinician ready access to the guidewire.
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.