Apparatus and method for assisting in the removal of a cardiac valve
First Claim
1. An apparatus for endovascular removal of a cardiac valve having at least two valve cusps, the apparatus being insertible through a blood vessel to access the cardiac valve, the apparatus comprising:
- a first catheter assembly for insertion into a blood vessel, the first catheter assembly having a longitudinal axis and a distal end;
deployable cutting means for cutting at least one valve cusp of the cardiac valve, the cutting means being attached to the distal end of the first catheter assembly; and
a deployable filter assembly disposed adjacent the distal end of the first catheter assembly and including at least two filter baskets, the filter assembly being operable to collect the severed valve cusps and being collapsible for removal from the blood vessel with the at least two severed valve cusps retained therein.
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Accused Products
Abstract
An apparatus and method for endovascular removal of a cardiac valve having at least two valve cusps is disclosed. The apparatus is insertable through a blood vessel to access the cardiac valve. The apparatus includes a first catheter assembly for insertion into a blood vessel, deployable cutting means for cutting at least one valve cusp of the cardiac valve, and a deployable filter assembly disposed adjacent the distal end of the first catheter assembly. The first catheter assembly has a longitudinal axis and a distal end. The cutting means is attached to the distal end of the first catheter assembly. The filter assembly is operable to collect the severed valve cusps and is collapsible for removal from the blood vessel with the severed valve cusps retained therein.
93 Citations
64 Claims
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1. An apparatus for endovascular removal of a cardiac valve having at least two valve cusps, the apparatus being insertible through a blood vessel to access the cardiac valve, the apparatus comprising:
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a first catheter assembly for insertion into a blood vessel, the first catheter assembly having a longitudinal axis and a distal end;
deployable cutting means for cutting at least one valve cusp of the cardiac valve, the cutting means being attached to the distal end of the first catheter assembly; and
a deployable filter assembly disposed adjacent the distal end of the first catheter assembly and including at least two filter baskets, the filter assembly being operable to collect the severed valve cusps and being collapsible for removal from the blood vessel with the at least two severed valve cusps retained therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for endovascular removal of a cardiac valve having at least two valve cusps, the apparatus being insertible through a blood vessel to access the cardiac valve, the apparatus comprising:
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a first catheter assembly for insertion into a blood vessel, the first catheter assembly having a longitudinal axis and a distal end;
cutting means for cutting at least one valve cusp of the cardiac valve, the cutting means being attached to the distal end of the first catheter assembly and being movable between a radially collapsed first condition and a radially expanded second condition;
at least two strut members, each of the at least two strut members having a first end connected with the first catheter assembly adjacent the distal end, each of the at least two strut members further having a second end comprising a cusp hook, the at least two strut members being movable between a collapsed condition and an expanded condition;
the at least two strut members, in the expanded condition, being operable to grasp and close the at least two valve cusps of a cardiac valve so that the cutting means, in the second condition, can sever the valve cusps through movement of the cutting means in the blood vessel; and
a filter assembly disposed adjacent the distal end of the first catheter assembly and including at least one filter basket, the filter assembly being movable between a radially collapsed undeployed condition and a radially expanded deployed condition in which the filter assembly is operable to collect the severed valve cusps, the filter assembly being collapsed to the undeployed condition for removal from the blood vessel with the at least two severed valve cusps retained therein. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. An apparatus for endovascular removal of a cardiac valve having at least two valve cusps, the apparatus being insertible through a blood vessel to access the cardiac valve, the apparatus comprising:
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a first catheter assembly for insertion into a blood vessel, the first catheter assembly having a longitudinal axis and a distal end;
a second catheter assembly for insertion into a blood vessel, the second catheter assembly having a longitudinal axis and a proximal end, the proximal end of the second catheter assembly being connectable with the distal end of the first catheter assembly adjacent the cardiac valve;
cutting means for cutting at least one valve cusp of the cardiac valve, the cutting means being movable between a radially collapsed first condition and a radially expanded second condition, the cutting means being attached to at least one of the distal end of the first catheter assembly and the proximal end of the second catheter assembly;
at least two strut members, each of the at least two strut members having a first end connected with at least one of the first catheter assembly, adjacent the distal end, and the second catheter assembly, adjacent the proximal end, each of the at least two strut members further having a second end comprising a cusp hook, the at least two strut members being movable between a collapsed condition and an expanded condition;
the at least two strut members, in the expanded condition, being operable to grasp and close the at least two valve cusps of a cardiac valve so that the cutting means, in the second condition, can sever the valve cusps through movement of the cutting means in the blood vessel; and
a filter assembly disposed adjacent at least one of the distal end of the first catheter assembly and the proximal end of the second catheter assembly and including at least one filter basket, the filter assembly being movable between a radially collapsed undeployed condition and a radially expanded deployed condition in which the filter assembly is operable to collect the severed valve cusps, the filter assembly being collapsed to the undeployed condition for removal from the blood vessel with the at least two severed valve cusps retained therein. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A method for endovascular removal of a cardiac valve having at least two valve cusps, the method comprising the steps of:
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providing a first catheter assembly having cutting means, at least two strut members, and a filter assembly having at least two filter baskets, the cutting means being connected with a distal end of the first catheter assembly, the at least two strut members being connected with the first catheter assembly adjacent the distal end, the filter assembly being disposed near the distal end of the first catheter assembly;
inserting the distal end of the first catheter assembly through a blood vessel with the cutting means, the at least two strut members, and the filter assembly in respective radially collapsed conditions;
advancing the distal end of the first catheter assembly toward the cusps of a cardiac valve so that the cutting means, the at least two strut members, and the filter assembly are located adjacent the cusps;
expanding the cutting means, the at least two strut members, and the filter assembly to respective radially expanded conditions;
hooking the cusps of the cardiac valve with the cusp hooks on the at least two strut members;
engaging the roots of the cusps of the cardiac valve with the cutting means;
severing the cusps at or near their roots through movement of the cutting means;
pulling the at least two strut members into the filter assembly and collecting the severed cusps in the filter assembly;
collapsing the cutting means, the at least two strut members, and the filter assembly to their respective radially collapsed conditions; and
withdrawing the distal end of the first catheter assembly from the blood vessel with the severed valve cusps retained within the filter assembly. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A method for endovascular removal of a cardiac valve having at least two valve cusps, the method comprising the steps of:
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providing a first catheter assembly having a distal end with cutting means connected at the distal end, the cutting means being movable between a radially collapsed first condition and a radially expanded second condition, the first catheter assembly further including at least two strut members and a filter assembly, the at least two strut members being attached to the first catheter assembly adjacent the distal end, each of the at least two strut members having an end comprising a cusp hook, the at least two strut members being movable between a collapsed condition and an expanded condition, the filter assembly having at least two filter baskets and being disposed near the distal end of the first catheter assembly, the filter assembly being movable between a radially collapsed undeployed condition and a radially expanded deployed condition;
placing the cutting means in the first condition;
placing the at least two strut members in the collapsed condition;
placing the filter assembly in the undeployed condition;
inserting the distal end of the first catheter assembly through a blood vessel;
advancing the distal end of the first catheter assembly toward the cusps of a cardiac valve so that the cutting means, the at least two strut members, and the filter assembly are located adjacent the cusps;
deploying the filter assembly to the deployed condition;
expanding the at least two filter baskets of the filter assembly, adjacent each other along the first catheter assembly, to respective frustoconical shapes;
expanding the cutting means to the second condition;
moving the at least two strut members to the expanded condition and into engagement with the cusps of the cardiac valve;
hooking the cusps of the cardiac valve with the cusp hooks on the at least two strut members;
closing the cardiac valve by moving the at least two strut members;
engaging the cusps of the cardiac valve with the cutting means;
severing the cusps at or near their roots through movement of the cutting means;
pulling the at least two strut members into the filter assembly and collecting the severed cusps, which are attached to the at least two strut members, in the filter assembly;
collapsing the at least two strut members to the collapsed condition;
collapsing the filter assembly to the undeployed condition with the valve cusps contained therein;
collapsing the cutting means to the first condition; and
withdrawing the distal end of the first catheter assembly from the blood vessel with the severed valve cusps retained within the filter assembly in the undeployed condition. - View Dependent Claims (64)
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Specification