Coaxial bi-directional catheter
First Claim
1. A bi-directional deflectable catheter comprising:
- an outer tubular member having a proximal end, a distal end and a first lumen;
an inner tubular member having a proximal end and a distal end, the inner member positioned within the first lumen of the outer member, the inner member and outer member being relatively movable, and a distal region of the inner member extending distally of the distal end of the outer member;
an elongated column member having a proximal end and a distal end, the column member fixed at the distal end of the inner member and fixed at the distal end of the outer member, wherein the column member is configured to bend in a region between the proximal end and the distal end to form an arc having a first height; and
a restriction member positioned over the column member and distal region of the inner member to restrict the bend of the column member to less than the first height;
wherein a distal tip portion of the catheter is deflectable in first and second opposing directions from a longitudinal axis of the catheter.
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Accused Products
Abstract
A deflectable catheter including an outer member having a proximal portion and a distal portion, an elongated column member extending distally from the outer member and an inner member positioned coaxial with the outer member and attached to the column member. The inner member extends distally of the outer member and has a distal tip portion. A reinforcement member is positioned over the column member to restrict axial movement of the column member such that when one of the inner member or outer member is moved with respect to the other, axial compression of the column member is restricted by the reinforcement member causing the distal tip portion of the inner member to deflect laterally.
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Citations
19 Claims
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1. A bi-directional deflectable catheter comprising:
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an outer tubular member having a proximal end, a distal end and a first lumen; an inner tubular member having a proximal end and a distal end, the inner member positioned within the first lumen of the outer member, the inner member and outer member being relatively movable, and a distal region of the inner member extending distally of the distal end of the outer member; an elongated column member having a proximal end and a distal end, the column member fixed at the distal end of the inner member and fixed at the distal end of the outer member, wherein the column member is configured to bend in a region between the proximal end and the distal end to form an arc having a first height; and a restriction member positioned over the column member and distal region of the inner member to restrict the bend of the column member to less than the first height;
wherein a distal tip portion of the catheter is deflectable in first and second opposing directions from a longitudinal axis of the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A bi-directional deflectable catheter comprising:
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an outer tubular member having a proximal end, a distal end and a first lumen; an inner tubular member having a proximal end, a distal end and a second lumen, the inner member positioned within the first lumen of the outer member, the inner member and outer member being relatively movable, and a distal region of the inner member extending distally of the distal end of the outer member; an elongated column member having a proximal end and a distal end, the proximal end of the column member fixed to the distal end of the outer member; and the distal end of the column member fixed to the distal end of the inner member, and a restriction member positioned over the column member and distal region of the inner member, the restriction member restricting buckling of the column member between the proximal and distal ends and further restricting deflection of a distal tip portion of the catheter, the distal tip portion of the catheter is deflectable in first and second opposing directions from a longitudinal axis of the catheter depending on the direction of relative movement of the inner and outer members. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A deflectable microcatheter comprising:
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an outer catheter having a proximal end, a distal end and a first lumen; an inner catheter having a proximal end, a distal end and a deflectable tip, a distal region of the inner member extending distally of the distal end of the outer catheter; a restriction member positioned over the deflectable tip; and a column member positioned within the restriction member and attached at the distal end of the outer catheter and at the distal end of the inner catheter; wherein proximal movement of the inner catheter applies a proximal force to the column member, thereby bending the deflectable tip of the inner catheter in a direction away from the column member; and wherein distal movement of the inner catheter applies a distal force to the column member, thereby bending the deflectable tip of the inner catheter in a direction toward the column member. - View Dependent Claims (17, 18, 19)
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Specification