Inner and outer telescoping catheter delivery system
First Claim
1. A catheter assembly for cannulating the coronary sinus of a patient'"'"'s heart from the right atrium, comprising:
- an outer catheter comprising an open lumen and a pre-formed distal end;
an inner catheter comprising a lumen and a pre-formed distal end, the inner catheter movably disposed within the open lumen of the outer catheter, the pre-formed distal end of the inner catheter being more flexible than the pre-formed distal end of the outer catheter, and the pre-formed distal end of the inner catheter extendable beyond the preformed distal end of the outer catheter; and
a proximal mechanism for axially rotating the outer catheter relative to the inner catheter and longitudinally translating the inner catheter relative to the outer catheter, an orientation of the pre-formed distal end of the outer catheter relative to the pre-formed distal end of the inner catheter modified by relative axial rotation and relative longitudinal translation between the outer and inner catheters such that a distal end of the catheter assembly can assume a selectable plurality of multidimensional shapes appropriate for accessing the coronary sinus.
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Accused Products
Abstract
A catheter assembly employs an outer catheter with a pre-formed distal end and an open lumen. An inner catheter having an open lumen and a pre-formed distal end is movably disposed within the outer catheter. Relative rotation and extension of the inner and outer catheters provides the distal end of the catheter assembly with an adjustable range of two- and three-dimensional shapes. The inner catheter can include sections of varying stiffness, such that extension of the inner catheter within the outer catheter modifies the shape of the outer catheter'"'"'s pre-formed distal end. The adjustable shaping of the catheter assembly'"'"'s distal tip provides an improved system for locating and cannulating cardiac venous structures, particularly the coronary sinus via the right atrium.
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Citations
39 Claims
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1. A catheter assembly for cannulating the coronary sinus of a patient'"'"'s heart from the right atrium, comprising:
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an outer catheter comprising an open lumen and a pre-formed distal end;
an inner catheter comprising a lumen and a pre-formed distal end, the inner catheter movably disposed within the open lumen of the outer catheter, the pre-formed distal end of the inner catheter being more flexible than the pre-formed distal end of the outer catheter, and the pre-formed distal end of the inner catheter extendable beyond the preformed distal end of the outer catheter; and
a proximal mechanism for axially rotating the outer catheter relative to the inner catheter and longitudinally translating the inner catheter relative to the outer catheter, an orientation of the pre-formed distal end of the outer catheter relative to the pre-formed distal end of the inner catheter modified by relative axial rotation and relative longitudinal translation between the outer and inner catheters such that a distal end of the catheter assembly can assume a selectable plurality of multidimensional shapes appropriate for accessing the coronary sinus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21)
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20. A catheter assembly, comprising:
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an outer catheter comprising an open lumen and a pre-formed distal end;
an inner catheter having a lumen, a pre-formed distal end, at least two adjacent longitudinal sections of varying stiffness, and a stiffness transition region between the at least two adjacent longitudinal sections of varying stiffness, the inner catheter movably disposed within the open lumen of the outer catheter, the pre-formed distal end of the inner catheter being more flexible than the pre-formed distal end of the outer catheter, and the pre-formed distal end of the inner catheter extendable beyond the preformed distal end of the outer catheter; and
a proximal mechanism for axially rotating the outer catheter relative to the inner catheter and longitudinally translating the inner catheter relative to the outer catheter, an orientation of the pre-formed distal end of the outer catheter relative to the pre-formed distal end of the inner catheter modified by relative axial rotation and relative longitudinal translation between the outer and inner catheters and a shape of the pre-formed distal end of the outer catheter changed by relative longitudinal translation between the outer and inner catheters thereby changing orientation of the sections of varying stiffness of the inner catheter relative to the pre-formed distal end of the outer catheter, such that a distal end of the catheter assembly can assume a selectable plurality of multidimensional shapes. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A method of inserting a payload into a coronary sinus of a patient'"'"'s heart, comprising:
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providing a catheter assembly, comprising;
an outer catheter having an open lumen and a pre-formed distal end;
an inner catheter comprising a lumen and a pre-formed distal end, the inner catheter movably disposed within the open lumen of the outer catheter, the pre-formed distal end of the inner catheter being more flexible than the pre-formed distal end of the outer catheter, and the pre-formed distal end of the inner catheter extendable beyond the preformed distal end of the outer catheter; and
a proximal mechanism for axially rotating the outer catheter relative to the inner catheter and longitudinally translating the inner catheter relative to the outer catheter, an orientation of the pre-formed distal end of the outer catheter relative to the pre-formed distal end of the inner catheter modified by relative axial rotation and relative longitudinal translation between the outer and inner catheters such that a distal end of the catheter assembly can assume a selectable plurality of multidimensional shapes appropriate for accessing the coronary sinus;
inserting the distal end of the catheter assembly through a patient'"'"'s right atrium via an access vessel;
axially rotating the outer catheter relative to the inner catheter and longitudinally displacing the inner catheter relative to the outer catheter to direct the distal end of the inner catheter for locating and cannulating the patient'"'"'s coronary sinus;
longitudinally sliding the outer catheter over the distal end of inner catheter to deep seat the outer catheter within the patient'"'"'s coronary sinus;
longitudinally sliding the inner catheter out of the proximal end of the catheter assembly to remove the inner catheter; and
inserting a payload through the proximal end of the outer catheter such that the payload is inserted into the patient'"'"'s coronary sinus. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A method of accessing a pulmonary vein of a patient'"'"'s heart, comprising:
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providing a catheter assembly, comprising;
an outer catheter having an open lumen and a pre-formed distal end;
an inner catheter comprising a lumen and a pre-formed distal end, the inner catheter movably disposed within the open lumen of the outer catheter, the pre-formed distal end of the inner catheter being more flexible than the pre-formed distal end of the outer catheter, and the pre-formed distal end of the inner catheter extendable beyond the preformed distal end of the outer catheter; and
a proximal mechanism for axially rotating the outer catheter relative to the inner catheter and longitudinally translating the inner catheter relative to the outer catheter, an orientation of the pre-formed distal end of the outer catheter relative to the pre-formed distal end of the inner catheter modified by relative axial rotation and relative longitudinal translation between the outer and inner catheters such that a distal end of the catheter assembly can assume a selectable plurality of multidimensional shapes;
inserting the distal end of the catheter assembly through a patient'"'"'s right atrium via an access vessel;
inserting a transseptal needle through an interatrial septum of the patient'"'"'s heart from the right atrium to create a transseptal puncture into the left atrium;
axially rotating the outer catheter relative to the inner catheter and longitudinally displacing the inner catheter relative to the outer catheter to direct the distal end of the catheter assembly for locating and cannulating the transseptal puncture; and
inserting a payload through the proximal end of the outer catheter such that the payload is inserted into the pulmonary vein via the left atrium. - View Dependent Claims (36, 37, 38, 39)
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Specification