FLOW RESTORATION SYSTEMS AND METHODS FOR USE
First Claim
1. A system for removing obstructive material from a body lumen, comprising:
- an outer tubular member comprising a proximal end, a distal end sized for introduction into a body lumen, and a lumen extending between the proximal and distal ends;
an obstruction device deployable from the tubular member to a location beyond obstructive material intended to be removed, the obstruction device comprising an expandable member on a distal end thereof; and
,a macerator device comprising an expandable cage carried on a distal end of a shaft and a constraint tube for maintaining the cage in a collapsed configuration to allow the macerator device to be introduced into the body lumen through the tubular member lumen, the cage being deployable from a distal end of the constraint tube and expandable to an expanded configuration within a body lumen, the cage comprising an open end communicating with an interior of the cage in the expanded configuration for capturing obstructive material within the interior of the cage;
wherein the cage is retractable into the constraint tube after being expanded within a body lumen such that the closed end of the cage slidably engages the distal end of the constraint tube and the cage is compressed back towards the collapsed configuration.
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Abstract
Apparatus and methods are provided for removing obstructive material within a body lumen. The apparatus includes a macerator device deployable from a sheath that includes an expandable cage carried by a shaft and within a constraint tube. The shaft is movable relative to the constraint tube for deploying and expanding the cage within a body lumen such that an open end of the cage is oriented towards obstructive material. The cage is advanced to capture the material or the material is directed into the cage using an expandable member expanded beyond the material and retracted to direct the material into the cage. The cage is withdrawn into the constraint tube to compress the cage radially inwardly. Materials extending through apertures in the cage are sheared off by a sharpened edge of the constraint tube. The smaller, sheared off particles are then aspirated from the body lumen through the sheath.
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Citations
31 Claims
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1. A system for removing obstructive material from a body lumen, comprising:
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an outer tubular member comprising a proximal end, a distal end sized for introduction into a body lumen, and a lumen extending between the proximal and distal ends; an obstruction device deployable from the tubular member to a location beyond obstructive material intended to be removed, the obstruction device comprising an expandable member on a distal end thereof; and
,a macerator device comprising an expandable cage carried on a distal end of a shaft and a constraint tube for maintaining the cage in a collapsed configuration to allow the macerator device to be introduced into the body lumen through the tubular member lumen, the cage being deployable from a distal end of the constraint tube and expandable to an expanded configuration within a body lumen, the cage comprising an open end communicating with an interior of the cage in the expanded configuration for capturing obstructive material within the interior of the cage; wherein the cage is retractable into the constraint tube after being expanded within a body lumen such that the closed end of the cage slidably engages the distal end of the constraint tube and the cage is compressed back towards the collapsed configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for removing obstructive material from a body lumen, comprising:
- an outer tubular member comprising a proximal end, a distal end sized for introduction into a body lumen, and a lumen extending between the proximal and distal ends; and
a macerator device deployable from the lumen and comprising an elongate shaft, an expandable cage carried by the shaft, and a constraint tube having a distal opening with a sharpened edge, wherein the shaft and the cage are axially moveable relative to the constraint tube - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
- an outer tubular member comprising a proximal end, a distal end sized for introduction into a body lumen, and a lumen extending between the proximal and distal ends; and
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21. A method for removing obstructive material from a body lumen, comprising:
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introducing a distal end of an elongate tubular member into the body lumen; introducing a macerator device through the tubular member lumen into the body lumen, the macerator device comprising an elongate shaft carrying an expandable cage in a collapsed configuration; expanding the cage within the body lumen to an expanded configuration such that the cage defines an open end;
capturing obstructive material within the cage through the open end; and
,collapsing the cage radially inwardly towards the collapsed configuration to allow the cage to be removed from the body lumen. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A method for removing obstructive material from a body lumen, comprising:
- introducing a distal end of a tubular member into a body lumen, the tubular member comprising a lumen extending proximally from the distal end;
introducing a distal end of an obstruction device from the tubular member into the body lumen to a location beyond obstructive material within the body lumen with an expandable member on the obstruction device distal end in a contracted condition;
introducing a distal end of a macerator device carrying an expandable cage in a collapsed configuration into the body lumen from the tubular member;
expanding the cage to an expanded configuration within the body lumen such that an open end of the cage is oriented towards the obstructive material;
expanding the expandable member of the obstruction device to an enlarged condition within the body lumen beyond the obstructive material;
manipulating the obstruction device to direct the expanded expandable member towards the cage, thereby directing obstructive material into the open end of the cage. - View Dependent Claims (28, 29, 30, 31)
- introducing a distal end of a tubular member into a body lumen, the tubular member comprising a lumen extending proximally from the distal end;
Specification