Device for traversing vessel occlusions and method of use
First Claim
1. An apparatus, comprising:
- a catheter having a proximal end and a distal end;
a spring member having a proximal end and a distal end, said proximal end of said spring member being affixed to said distal end of said catheter, said spring member comprises a compression spring;
a drilling component contiguous with said distal end of said spring member and functionally attached thereto, said drilling component comprising a spring having at least two tightly packed neighboring coils disposed at a distal-most end of the drilling component; and
a pulling member housed within said catheter, said pulling member having a proximal end and a distal end, said distal end of said pulling member affixed to a distal structure selected from the group consisting of said spring member and said drilling component.
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Accused Products
Abstract
An apparatus, system and method for re-canalization or opening a passage through an occlusion in a blood vessel is provided. The apparatus and method, which are appropriate for cardiovascular and peripheral vessels, use a pulling member and a spring member, for example a compression spring, to oscillate a drilling component. The drilling component at the distal end of the catheter tip has combined longitudinal stiffness for penetrating a total or partial occlusion and high axial (lateral) flexibility to improve deliverability and crossability of a catheter through a partially occluded vessel or a tortuous vessel, and may taper distally. The system of the invention includes the apparatus and a control unit to permit adjustment of the frequency or amplitude of oscillation of the drilling component. Also provided is a method for oscillating a drilling component using a pulling member and a spring member and a method of traversing an occlusion.
83 Citations
26 Claims
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1. An apparatus, comprising:
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a catheter having a proximal end and a distal end; a spring member having a proximal end and a distal end, said proximal end of said spring member being affixed to said distal end of said catheter, said spring member comprises a compression spring; a drilling component contiguous with said distal end of said spring member and functionally attached thereto, said drilling component comprising a spring having at least two tightly packed neighboring coils disposed at a distal-most end of the drilling component; and a pulling member housed within said catheter, said pulling member having a proximal end and a distal end, said distal end of said pulling member affixed to a distal structure selected from the group consisting of said spring member and said drilling component. - 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. A catheter system, comprising:
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a catheter having a proximal end, a distal end, and a lumen; a guidewire extending through the lumen; a spring member having a proximal end and a distal end, said proximal end of said spring member being affixed to said distal end of said catheter, said spring member comprises a compression spring; a drilling component contiguous with said distal end of said spring member and functionally attached thereto, said drilling component comprising a spring having at least two tightly packed neighboring coils disposed at a distal-most end of the drilling component; and a pulling member housed within said catheter, said pulling member having a proximal end and a distal end, said distal end of said pulling member affixed to a distal structure selected from the group consisting of said spring member and said drilling component. - View Dependent Claims (26)
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Specification