Triple lumen stone balloon catheter and method
First Claim
Patent Images
1. A multi-lumen balloon catheter comprising:
- a sheath comprising a main body and a distal end extending distally from the main body and a plurality of lumens comprising a first lumen, second lumen, and third lumen;
the third lumen formed in the sheath wherein a first portion of the third lumen extends at least partially through the main body and has a first shape in cross section and wherein a second portion of the third lumen extends at least partially through the distal end and has a second, different shape in cross section;
the second lumen extending at least partially through the main body and partially through the distal end;
the first lumen extending at least partially through the main body and partially through the distal end;
a balloon attached about the distal end; and
a taper portion extending proximally from the distal end, wherein the outside diameter of the sheath at the distal end is smaller than the outside diameter of the sheath at the proximal end of the taper portion, the plurality of lumens extending through the taper portion.
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Abstract
A triple lumen stone balloon catheter (1) having a tapered distal end (9). A lumen (24) dedicated to transmitting contrast media is dimensioned and adapted to conform to the shape of a kidney in a main shaft of the catheter and conform to the shape of a crescent in a distal end of the catheter. The geometric shaping of the contrast media lumen (24) enables wall thickness to be maintained within acceptable ranges to sustain desirable mechanical characteristics while allowing for enhanced contrast media flow. A method for employing the balloon catheter (1) is also disclosed.
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Citations
46 Claims
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1. A multi-lumen balloon catheter comprising:
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a sheath comprising a main body and a distal end extending distally from the main body and a plurality of lumens comprising a first lumen, second lumen, and third lumen; the third lumen formed in the sheath wherein a first portion of the third lumen extends at least partially through the main body and has a first shape in cross section and wherein a second portion of the third lumen extends at least partially through the distal end and has a second, different shape in cross section; the second lumen extending at least partially through the main body and partially through the distal end; the first lumen extending at least partially through the main body and partially through the distal end; a balloon attached about the distal end; and a taper portion extending proximally from the distal end, wherein the outside diameter of the sheath at the distal end is smaller than the outside diameter of the sheath at the proximal end of the taper portion, the plurality of lumens extending through the taper portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A multi-lumen balloon catheter comprising:
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a sheath comprising a main body and a distal end extending distally from the main body and a plurality of lumens comprising a first lumen, second lumen, and third lumen; third lumen formed in the sheath wherein a first portion of the third lumen extends at least partially through the main body and has a first shape in cross section and a cross-sectional area from about 3.48 ×
10-4 inches2 to about 3.15 ×
10-3 inches2 and, wherein a second portion of the third lumen extends at least partially through the distal end and has a second, different shape in cross section and has a cross-sectional area from about 1.42 ×
10-4 inches2 to about 1.07 ×
10-3 inches2;the second lumen extending at least partially through the main body and partially through the distal end; the first lumen extending at least partially through the main body and partially through the distal end; a balloon attached about the distal end; and a taper portion extending proximally from the distal end, wherein the outside diameter of the sheath at the distal end is smaller than the outside diameter of the sheath at the proximal end of the taper portion, the plurality of lumens extending through the taper portion. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A sheath comprising:
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a main body and a distal end extending distally from the main body and a plurality of lumens comprising a contrast media lumen, a second lumen, and a third lumen; the contrast media lumen formed in the sheath wherein a first portion of the contrast media lumen extends at least partially through the main body and has a first shape in cross section and wherein a second portion of the contrast media lumen extends at least partially through the distal end and has a second, different shape in cross section; the second lumen extending at least partially through the main body and partially through the distal end; the third lumen extending at least partially through the main body and partially through the distal end; and a taper portion extending proximally from the distal end, wherein the outside diameter of the sheath at the distal end is smaller than the outside diameter of the sheath at the proximal end of the taper portion, the plurality of lumens extending through the taper portion. - View Dependent Claims (22, 23, 24)
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25. An endoscopic method of evaluating and treating an occluded duct comprising the steps of providing a catheter having at least three lumens comprising:
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a sheath having a main body and a distal end extending distally from the main body, a balloon attached about the distal end, wherein the balloon has an inner surface, a third lumen for contrast media, wherein the third lumen has a first portion having a kidney shape in cross section and extending at least partially through the main body and a second portion having a crescent shape in cross section and extending at least partially through the distal end; a second lumen extending at least partially through the main body and partially through the distal end and having a distal port in communication with the inner surface of the balloon and a proximal port to receive inflation media; a first lumen extending at least partially through the main body and at least partially through the distal end wherein the first lumen has a distal port in the distal end and is adapted to receive a guide wire; providing an endoscope having a working channel; advancing the endoscope into proximity with a duct system; advancing a guide wire through the working channel of the endoscope, out the endoscope'"'"'s distal end, and into a desired position in the duct system; placing the guide wire into the distal port of the first lumen and sliding the catheter over the guide wire and through the endoscope; positioning the catheter in the duct system; infusing contrast media through the third lumen; and infusing inflation media into the second lumen to expand the balloon. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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26. An endoscopic method of evaluating and treating an occluded duct, comprising the steps of providing a catheter having at least three lumens comprising:
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a sheath having a main body and a distal end extending distally from the main body, a balloon attached about the distal end, wherein the balloon has an inner surface, a third lumen for contrast media, wherein the third lumen has a first portion having a kidney shape in cross section and extending at least partially through the main body and a second portion having a crescent shape in cross section and extending at least partially through the distal end; a second lumen extending at least partially through the main body and partially through the distal end and having a distal port in communication with the inner surface of the balloon and a proximal port to receive inflation media; a first lumen extending at least partially through the main body and at least partially through the distal end wherein the first lumen has a distal port in the distal end and is adapted to receive a guide wire; providing an endoscope having a working channel; advancing the endoscope into proximity with a duct system; preloading the guide wire into the first lumen of the catheter and advancing the guide wire and the catheter together through the working channel of the endoscope, out the endoscope'"'"'s distal end, and into a desired position in the duct system; infusing contrast media through the third lumen; and infusing inflation media into the second lumen to expand the balloon.
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33. A multi-lumen balloon catheter comprising:
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a sheath comprising a main body and a distal end extending distally from the main body and a plurality of lumens comprising a first lumen, second lumen, and third lumen; the third lumen formed in the sheath wherein a first portion of the third lumen extends at least partially through the main body and has a first shape in cross section and wherein a second portion of the third lumen extends at least partially through the distal end and has a second, different shape in cross section; the second lumen extending at least partially through the main body and partially through the distal end; the first lumen extending at least partially through the main body and partially through the distal end; a balloon attached about the distal end; wherein the third lumen transitions from the first shape to the second shape at a point, or over a region, that is proxmal to the balloon; and a taper portion extending proximally from the distal end, wherein the outside diameter of the shealth at the distal end is smaller than the outside diameter of the shealth at the proximal end of the taper portion, the plurality of lumens extending through the taper portion. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification