Apparatus and Methods for Locating an Ostium of a Vessel
First Claim
1. An apparatus for locating an ostium of a body lumen, comprising:
- a 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 elongate member comprising a distal portion disposed within the lumen such that the distal portion may be advanced beyond the tubular member distal end; and
an expandable loop on the distal portion, the loop comprising first and second ends fixed to the distal portion, first and second resilient struts extending from the first and second ends, respectively, and a curved intermediate region extending between the first and second struts, the loop being resiliently compressible to a contracted condition when the distal portion is disposed within the lumen and resiliently expandable to an enlarged condition when the distal portion is advanced beyond the tubular member distal end.
1 Assignment
0 Petitions
Accused Products
Abstract
Apparatus and methods are provided for locating an ostium of a body lumen. In one embodiment, a delivery catheter or other tubular member includes a distal end sized for introduction into a body lumen, and one or more locator loops on the distal end. In one embodiment, the locator loop may include first and second ends fixed to the distal end, first and second resilient struts extending from the first and second ends, respectively, and a curved intermediate region extending between the first and second struts. The loop may be resiliently compressible to a contracted condition for delivery and resiliently expandable to an enlarged condition when deployed. The apparatus may include one or more balloons, stents, and the like on the distal end adjacent the locator loop.
70 Citations
50 Claims
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1. An apparatus for locating an ostium of a body lumen, comprising:
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a 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 elongate member comprising a distal portion disposed within the lumen such that the distal portion may be advanced beyond the tubular member distal end; and
an expandable loop on the distal portion, the loop comprising first and second ends fixed to the distal portion, first and second resilient struts extending from the first and second ends, respectively, and a curved intermediate region extending between the first and second struts, the loop being resiliently compressible to a contracted condition when the distal portion is disposed within the lumen and resiliently expandable to an enlarged condition when the distal portion is advanced beyond the tubular member distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An apparatus for locating an ostium of a body lumen, comprising:
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a 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 elongate member comprising a distal portion disposed within the lumen such that the distal portion may be advanced beyond the tubular member distal end; and
a plurality of expandable loops on the distal portion, each loop comprising first and second resilient struts extending from the distal portion, and a curved intermediate region extending between the first and second struts, each loop being resiliently compressible to a contracted condition when the distal portion is disposed within the lumen and resiliently expandable to an enlarged condition when the distal portion is advanced beyond the tubular member distal end, the loops being disposed around the distal portion such that the intermediate regions define at least a portion of an ellipse surrounding the distal portion when the loops are in the enlarged condition. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. An apparatus for locating an ostium of a body lumen, comprising:
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a tubular member comprising a proximal end, a distal end sized for introduction into a body lumen, a lumen extending between the proximal and distal ends, and a distal portion;
one or more locator elements disposed asymmetrically on the distal portion, each locator element comprising a first end fixed to the distal portion and a second end free from the distal portion, each locator element being resiliently compressible to a contracted condition when the distal portion is disposed within a lumen of a delivery device, each locator element being resiliently expandable to an enlarged condition when fully deployed from the delivery device; and
a stent on the distal portion. - View Dependent Claims (34, 35, 36, 37)
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38. An apparatus for locating an ostium of a body lumen, comprising:
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a tubular member comprising a proximal end, a distal end sized for introduction into a body lumen, a lumen extending between the proximal and distal ends, and a distal portion; and
a locator loop on the distal portion that is resiliently compressible to a contracted condition when the distal portion is disposed within a lumen of a delivery device and is resiliently expandable to an enlarged condition when fully deployed from the delivery device, the locator loop comprising a loop that substantially surrounds the distal portion of the tubular member in the enlarged condition, and a plurality of struts extending between the loop and the distal portion for attaching the locator loop to the tubular member. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46)
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47. A method for delivering a stent within an ostium communicating from a main body lumen to a branch body lumen, comprising:
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advancing a distal end of a delivery catheter into the main body lumen, the distal end comprising one or more locator elements constrained in a contracted condition;
releasing the one or more locator elements within the main body lumen, the one or more locator elements resiliently expanding asymmetrically;
directing the one or more locator elements against a wall of the ostium, the one or more locator elements causing the distal end of the delivery catheter to rotate about its longitudinal axis; and
performing a procedure at or within the ostium based upon the position of the one or more locator elements in the enlarged condition. - View Dependent Claims (48, 49)
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50. A method for delivering a stent within an ostium communicating from a main body lumen to a branch body lumen, comprising:
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advancing a distal end of a delivery catheter into the main body lumen, the distal end comprising one or more locator elements constrained in a contracted condition;
releasing the one or more locator elements within the main body lumen, the one or more locator elements resiliently expanding to substantially surround the distal end;
directing the one or more locator elements against a wall of the ostium, thereby causing one or more struts supporting the one or more locator elements to bend away from the ostium; and
performing a procedure at or within the ostium based upon the position of the one or more locator elements in the enlarged condition.
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Specification