Flow restoration systems and methods for use
First Claim
1. A system for removing obstructive material from a body lumen, the system 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 outer tubular member to a location distal of an entirety of the obstructive material intended to be removed, the obstruction device comprising a first shaft configured to slide within the outer tubular member and a balloon on a distal end of the first shaft; and
a macerator device comprising;
an expandable cage carried on a distal end of a second shaft configured to slide within the outer tubular member, the second shaft being different from the first shaft;
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 lumen of the outer tubular member, the cage being deployable from a distal end of the constraint tube and expandable to an expanded configuration within the body lumen at a location at least partially proximal of the obstructive material intended to be removed, the cage comprising a closed end connected to the distal end of the second shaft and an open end, that is opposite the closed end, communicating with an interior of the cage in the expanded configuration for capturing obstructive material within the interior of the cage; and
a plurality of separate substantially straight distal tips extending distally of the open end of the cage, each substantially straight distal tip comprising a proximal end and a distal end, the proximal ends of the substantially straight distal tips being connected to the open end of the cage, the substantially straight distal tips being configured to interlock with one another when the cage is rotated, and the distal ends of the substantially straight distal tips being atraumatic,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 to the collapsed configuration.
5 Assignments
0 Petitions
Accused Products
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.
52 Citations
27 Claims
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1. A system for removing obstructive material from a body lumen, the system 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 outer tubular member to a location distal of an entirety of the obstructive material intended to be removed, the obstruction device comprising a first shaft configured to slide within the outer tubular member and a balloon on a distal end of the first shaft; and a macerator device comprising; an expandable cage carried on a distal end of a second shaft configured to slide within the outer tubular member, the second shaft being different from the first shaft; 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 lumen of the outer tubular member, the cage being deployable from a distal end of the constraint tube and expandable to an expanded configuration within the body lumen at a location at least partially proximal of the obstructive material intended to be removed, the cage comprising a closed end connected to the distal end of the second shaft and an open end, that is opposite the closed end, communicating with an interior of the cage in the expanded configuration for capturing obstructive material within the interior of the cage; and a plurality of separate substantially straight distal tips extending distally of the open end of the cage, each substantially straight distal tip comprising a proximal end and a distal end, the proximal ends of the substantially straight distal tips being connected to the open end of the cage, the substantially straight distal tips being configured to interlock with one another when the cage is rotated, and the distal ends of the substantially straight distal tips being atraumatic, 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 to the collapsed configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for removing obstructive material from a body lumen, the system 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; and a macerator device deployable from the lumen and comprising an elongate shaft, an expandable cage carried on a distal end of the elongate shaft, and a constraint tube having a distal opening with a sharp edge, wherein the cage comprises a closed end connected to the distal end of the elongate shaft and an open end, that is opposite the closed end, communicating with an interior of the cage in an expanded configuration for capturing obstructive material within the interior of the cage, wherein the cage comprises a wall extending between the open end and the closed end of the cage, the wall comprising a plurality of struts defining a plurality of apertures, wherein the elongate shaft and the cage are axially moveable relative to the constraint tube such that the closed end of the cage slidably engages the sharp distal edge of the constraint tube to compress the cage to a collapsed configuration so that obstructive material captured by the cage extends through the apertures of the wall of the cage, wherein the sharp edge of the constraint tube is configured to shear the obstructive material extending through the apertures from the cage, and wherein a plurality of separate substantially straight distal tips extend distally from the struts of the open end of the cage, each of the substantially straight distal tips comprising a proximal end and a distal end, the proximal ends of the substantially straight distal tips being connected to the open end of the cage, the substantially straight distal tips being configured to interlock with one another when the cage is rotated, and the distal ends of the substantially straight distal tips being atraumatic. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification