Adjustable blood filtration system
First Claim
1. A modular filter apparatus for insertion into a hollow vessel insertion device for filtering embolic material from a blood vessel into which the insertion device is introduced, said modular filter apparatus comprising:
- a shaft having a proximal end and a distal end including a release mechanism;
an adjustable filter frame removably-mounted on the release mechanism the distal end of the shaft, said adjustable filter frame adjustable between a contracted condition and an enlarged condition and having a diameter and an interior area; and
a filter mesh coupled to the adjustable filter frame for capturing embolic material,wherein the modular filter apparatus is removably insertable into said hollow vessel insertion device, and, upon insertion through the hollow vessel device into the vessel, said adjustable filter frame adjusts the diameter of the adjustable filter frame to conform to the inner lumen of the vessel, andwherein said adjustable filter frame and filter mesh coupled thereto may be demounted from the shaft.
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0 Petitions
Accused Products
Abstract
A modular blood filter device and delivery system, comprising a hollow vessel insertion device with a modular filter apparatus. The insertion device, which can be an introducer, includes a distal end adapted to enter an artery, and a proximal end adapted to receive a modular filter apparatus. When the insertion device is a cannula, the modular filter apparatus is received through a side port. The modular filter apparatus includes a shaft and an adjustable filter device or a removable filter associated with the shaft. The adjustable filter includes filter mesh, an adjustable flame capable of assuming enlarged and contracted conditions and a frame sizing mechanism associated with the frame. Certain embodiments include a filter cartridge, and the shaft is inserted into the cartridge, thereby protecting the adjustable filter device therein. The cartridge may then be removably received by the insertion device. An expandable obturator may be used to ease the entry of the insertion device into the vessel. Indexing and locking mechanisms are described for aligning the cartridge or the obturator to the insertion device. Vessel sizing tools are also described for determining the size of the vessel into which the filter will be introduced. The insertion device may then be introduced into a blood vessel, and the adjustable filter device may be deployed through the device into the vessel The adjustable frame may be self-adjusting or externally adjusted to fit the vessel and to capture embolic material in the mesh. The frame may be collapsed to the contracted condition, and may be removed from the vessel or embolic debris may be removed by an aspiration tube. The modular filter cartridge may be removed from the cannula, and a new modular filter cartridge may then be received therein.
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Citations
28 Claims
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1. A modular filter apparatus for insertion into a hollow vessel insertion device for filtering embolic material from a blood vessel into which the insertion device is introduced, said modular filter apparatus comprising:
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a shaft having a proximal end and a distal end including a release mechanism; an adjustable filter frame removably-mounted on the release mechanism the distal end of the shaft, said adjustable filter frame adjustable between a contracted condition and an enlarged condition and having a diameter and an interior area; and a filter mesh coupled to the adjustable filter frame for capturing embolic material, wherein the modular filter apparatus is removably insertable into said hollow vessel insertion device, and, upon insertion through the hollow vessel device into the vessel, said adjustable filter frame adjusts the diameter of the adjustable filter frame to conform to the inner lumen of the vessel, and wherein said adjustable filter frame and filter mesh coupled thereto may be demounted from the shaft. - View Dependent Claims (2, 3, 4)
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5. A modular filter apparatus for insertion into a hollow vessel insertion device for filtering embolic material from a blood vessel into which the hollow vessel insertion device is introduced, said modular filter apparatus comprising:
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a shaft having a proximal end and a distal end; an adjustable filter frame disposed about the distal end of the shaft, which is adjustable between a contracted condition and an enlarged condition, said adjustable filter frame having a diameter and an interior area; a frame sizing mechanism associated with said adjustable filter frame wherein the adjustable filter frame automatically self-adjusts to fit the lumen of the vessel; and a filter mesh coupled to the adjustable filter frame for capturing embolic material, wherein the modular filter apparatus is removably insertable into said hollow vessel insertion device, and, upon insertion through the hollow vessel insertion device into the artery, said frame sizing mechanism adjusts the diameter of the adjustable filter frame to conform to the inner lumen of the vessel. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A blood filtering system, comprising:
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a hollow vessel insertion device capable of receiving a modular filter apparatus for capturing embolic material in a blood vessel, the hollow vessel insertion device comprising an elongated tube having an outer surface, a distal region, a distal end adapted to enter a vessel, a proximal end and a lumen therebetween; and a modular filter apparatus for insertion into said hollow vessel insertion device, said modular filter apparatus comprising; a shaft having a proximal end and a distal end; an adjustable frame disposed about the distal end of the shaft, which is expandable between a contracted condition and an enlarged condition; a frame sizing mechanism associated with said adjustable frame wherein the adjustable frame automatically self-adjusts to fit the lumen of the vessel; and a filter mesh coupled to the adjustable frame for capturing embolic material, wherein, the modular filter apparatus is removably insertable into the hollow vessel insertion device, and, upon insertion through the hollow vessel insertion device and into said vessel said frame sizing mechanism adjusts the diameter of the adjustable filter frame to conform to the inner lumen of the vessel. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
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Specification