FLEXIBLE MEDICAL DEVICE FOR CLOT REMOVAL FROM SMALL VESSELS
First Claim
1. A medical device for clot removal from small vessels by fibrinolytic infusion or vacuum retrieval, the device comprising:
- an elongated tubular delivery member having a proximal portion and a distal portion, the delivery member comprising a metal core of multiple shaped-wire strands having an A-side and a B-side, the wire strands helically wound to form a lumen with an inner diameter defined by the A-side of the strands and a polymer overlay disposed about the metal core;
the proximal portion and distal portion being different in their predetermined degree of rigidity; and
a leak-free connector in contact with the proximal portion of the delivery member;
the connector being compatible for use with fibrinolytic infusion and vacuum retrieval;
wherein the helically wound wire strands form a first polygon defined by the B-side of the strands and a second polygon defined by the A-side of the strands;
the second polygon defining the shape of the lumen.
3 Assignments
0 Petitions
Accused Products
Abstract
A medical device and method of applying said medical device to deliver drugs and to remove thrombus or soft tissue clots from vascular or other lumens in a patient is presented. The medical device generally comprises an elongated tubular delivery member having a proximal portion and a distal portion that differ in rigidity and a leak-free connector that is in contact with the proximal portion of the delivery member and is compatible for use with fibrinolytic agents and application of a vacuum. The delivery member includes a metal core made out of multiple shaped-wire strands and a polymer overlay disposed about the core. The wire strands, which have both an A-side and a B-side, are helically wound to form a polygonal shaped lumen whose inner diameter is defined by the A-side of the strands.
36 Citations
21 Claims
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1. A medical device for clot removal from small vessels by fibrinolytic infusion or vacuum retrieval, the device comprising:
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an elongated tubular delivery member having a proximal portion and a distal portion, the delivery member comprising a metal core of multiple shaped-wire strands having an A-side and a B-side, the wire strands helically wound to form a lumen with an inner diameter defined by the A-side of the strands and a polymer overlay disposed about the metal core;
the proximal portion and distal portion being different in their predetermined degree of rigidity; anda leak-free connector in contact with the proximal portion of the delivery member;
the connector being compatible for use with fibrinolytic infusion and vacuum retrieval;wherein the helically wound wire strands form a first polygon defined by the B-side of the strands and a second polygon defined by the A-side of the strands;
the second polygon defining the shape of the lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for clot removal from small vessels by fibrinolytic infusion or vacuum retrieval, the method comprising the steps of:
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introducing a sheath having a lumen into a blood vessel; inserting a guide wire through the lumen of the sheath; deploying the elongated tubular delivery member of a medical device having distal and proximal portions with a common lumen over the guide wire into the blood vessel; positioning the distal end of the delivery member proximate to a clot; removing the guide wire; injecting a fibrinolytic agent into the blood vessel through the delivery member until the clot is dissolved; and removing the delivery member of the medical device from the blood vessel; wherein the delivery member of the medical device has a metal core comprising multiple shaped-wire strands having an A-side and a B-side, the wire strands helically wound to form a lumen with its inner diameter being defined by the A-side of the strands and a polymer overlay disposed about the B-side of the metal core;
said helically wound wire strands further forming a first polygon defined by the B-side of the strands and a second polygon defined by the A-side of the strands;
the second polygon defining the shape of the lumen. - View Dependent Claims (19, 20, 21)
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Specification