Implant devices for filtering blood flowing through the ostium of an atrial appendage have component structures one or more of which are expandable. Devices with component structures in their unexpanded state have a compact size suitable for intra-cutaneous delivery to an atrial appendage situs. The expandable component structures are expanded in situ to deploy the devices. A device may have sufficiently short axial length so that most or almost all of the device length may fit within the ostium region.

Vascular filtering devices and methods for their use are disclosed. In some embodiments, the vascular filtering devices include an elongate member having an unsupported membrane bag portion attached thereto. The membrane may be porous in some examples. Multiple elongate extensions may also extend from the membrane, and may extend along the elongate member, such as to a proximal region of the elongate member. The unsupported membrane bag portion may be configured to inflate or otherwise radially expand away from the elongate member as a result of blood flowing through the vessel within which the vascular filtering device is positioned.

Single filter and multi-filter endolumenal methods and systems for filtering fluids within the body. In some embodiments a blood filtering system captures and removes particulates dislodged or generated during a surgical procedure and circulating in a patient's vasculature. In some embodiments a filter system protects the cerebral vasculature during a cardiac valve repair or replacement procedure.

Vascular filtering devices and methods for their use are disclosed. In some embodiments, the vascular filtering devices include an elongate member having an unsupported membrane bag portion attached thereto. The membrane may be porous in some examples. Multiple elongate extensions may also extend from the membrane, and may extend along the elongate member, such as to a proximal region of the elongate member. The unsupported membrane bag portion may be configured to inflate or otherwise radially expand away from the elongate member as a result of blood flowing through the vessel within which the vascular filtering device is positioned.

In vivo positionable filtration devices are provided that filter one or more therapeutic agents in blood flowing in a blood vessel. The filtration devices include an elongated member and a filtering component coupled to the elongated member. The elongated member and the filtering component are dimensioned for positioning within the blood vessel. Further, the filtering component includes a filtration material to filter the one or more therapeutic agents from the blood. Methods of in vivo filtration of the one or more therapeutic agents are also provided. The methods include positioning a filtration device of the filtration devices in the blood vessel, and administering a therapeutic agent of the one or more therapeutic agents upstream from a target tissue site to direct flow of the therapeutic agent to the target tissue site and then to the filtration device. The filtration device is positioned downstream from the target tissue site.

Embodiments of the invention relate generally to devices and methods for providing filtration of debris within a body lumen. More particularly, embodiments of the invention related to devices and methods for providing distal protection to a medical procedure by filtration of debris generated by the medical procedure using filters having a frame with a slidable crossover point.

Embolic protection elements are integrated with a catheter or access sheath for any catheter. A catheter with an integrated embolic protection element comprises a catheter shaft, an embolic filter slidably mounted on a distal portion of the shaft, a proximal stop for limiting the proximal movement of the embolic filter, and a distal stop for limiting the distal movement of the embolic filter. The filter comprises a porous mesh material defining a collection chamber for captured emboli and has a collapsed and a deployed configuration. The filter may be collapsed by an access sheath used with the catheter. An access sheath may comprise a tubular main body and an embolic filter mounted on the distal portion of the tubular main body. The embolic filter may evert into the central lumen of the sheath or may be constrained on the exterior of the sheath with a larger diameter outer tube.

Single filter and multi-filter endolumenal methods and systems for filtering fluids within the body. In some embodiments a blood filtering system captures and removes particulates dislodged or generated during a surgical procedure and circulating in a patient's vasculature. In some embodiments a filter system protects the cerebral vasculature during a cardiac valve repair or replacement procedure.

A rapid exchange catheter having a vena cava filter and a method for percutaneous delivery of the rapid exchange vena cava filter for use in indicated medical situations in which prophylactic or therapeutic protection against pulmonary embolism are indicated.

An infarction prevention device has a filter to be placed inside a blood vessel. The filter includes a connection portion having a base end to be connected to a placing member configured to place the filter inside the blood vessel, and a cylindrical body portion connected to a front end of the connection portion. At least one of the connection portion and the cylindrical body portion includes a capturing portion configured to capture a foreign substance included in blood inside the blood vessel such that the at least one of the connection portion and the body portion controls a flow of the foreign substance.