Adjustable Sizer Devices for Minimally Invasive Cardiac Surgery
First Claim
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1. An adjustable device for sizing a heart valve annulus by a minimally invasive route, the device comprising:
- a cannula comprising a proximal end, a distal end and an interior lumen; and
at least one wire extending through the interior lumen of the cannula, wherein the at least one wire may be advanced or retracted through the lumen and from the distal end of the cannula, such that a segment of the wire may form a plurality of different predetermined shapes of predetermined sizes used to size the heart valve annulus.
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Abstract
Described is an adjustable device for sizing a heart valve annulus by a minimally invasive route, the device comprising: a cannula comprising a proximal end, a distal end and an interior lumen; and at least one wire extending through the interior lumen of the cannula, wherein the at least one wire may be advanced or retracted through the lumen and from the distal end of the cannula, such that a segment of the wire may form a plurality of different predetermined shapes of predetermined sizes used to size the heart valve annulus. Additionally, methods of using such adjustable sizing devices are disclosed.
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Citations
19 Claims
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1. An adjustable device for sizing a heart valve annulus by a minimally invasive route, the device comprising:
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a cannula comprising a proximal end, a distal end and an interior lumen; and at least one wire extending through the interior lumen of the cannula, wherein the at least one wire may be advanced or retracted through the lumen and from the distal end of the cannula, such that a segment of the wire may form a plurality of different predetermined shapes of predetermined sizes used to size the heart valve annulus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An adjustable device for sizing a heart valve annulus by a minimally invasive route, the device comprising:
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a cannula comprising a proximal end, a distal end and an interior lumen; and a plurality of wires comprising proximal and distal ends and extending through the interior lumen of the cannula, wherein the plurality of wires may be advanced or retracted together through the lumen and from the distal end of the cannula, such that the distal ends of the plurality of wires may form a plurality of different predetermined shapes and may be spaced apart. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of sizing a heart valve annulus, the method comprising the steps of:
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receiving an adjustable device for sizing a heart valve annulus by a minimally invasive route, the device comprising; a cannula comprising a proximal end, a distal end and an interior lumen; and at least one wire extending through the interior lumen of the cannula, wherein the at least one wire may be advanced or retracted through the lumen and from the distal end of the cannula, such that a segment of the wire may form a plurality of different predetermined shapes of predetermined sizes used to size the heart valve annulus; inserting the device into the minimally invasive route; advancing the at least one wire from the distal end of the cannula such that the advanced segment forms a first shape and size of the plurality of predetermined shapes and sizes; comparing the advanced segment of wire to the heart valve annulus; if the advanced segment fits the heart valve annulus, then retracting and removing the device from the minimally invasive route; and if the advanced segment does not fit the heart valve annulus, then advancing or retracting the at least one wire such that the advanced segment forms a second shape and size of the plurality of predetermined shapes and sizes, and repeating until the advanced segment fits the heart valve annulus, then retracting and removing the device from the minimally invasive route.
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19. A method of sizing a heart valve annulus, the method comprising the steps of:
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receiving an adjustable device for sizing a heart valve annulus by a minimally invasive route, the device comprising; a cannula comprising a proximal end, a distal end and an interior lumen; and a plurality of wires comprising proximal and distal ends and extending through the interior lumen of the cannula, wherein the plurality of wires may be advanced or retracted together through the lumen and from the distal end of the cannula, such that the distal ends of the plurality of wires may form a plurality of different predetermined shapes and may be spaced apart; inserting the device into the minimally invasive route; advancing the plurality of wires from the distal end of the cannula such that the distal ends of the plurality of wires form a first shape and are spaced apart a first distance; comparing the distal ends of the plurality of wires the heart valve annulus; if the distal ends of the plurality of wires fit the heart valve annulus, then retracting and removing the device from the minimally invasive route; and if the distal ends of the plurality of wires do not fit the heart valve annulus, then advancing or retracting the plurality of wires such that the distal ends of the wires form a second shape and are spaced apart a second distance, and repeating until the distal ends of the wires fit the heart valve annulus, then retracting and removing the device from the minimally invasive route.
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Specification