Devices and methods for treating venous diseases
First Claim
Patent Images
1. A venous treatment apparatus comprising:
- a device comprising an inner sheath and an outer sheath, the outer sheath having a proximal portion, an extended distal portion having a length between 50 cm and 400 cm, and a central portion and the inner sheath substantially fitting within the outer sheath,said central portion of the outer sheath including an expansile braid mechanism having a distal end connected to the extended distal portion of the outer sheath and having a proximal end connected to the proximal portion of the outer sheath,said expansile braid mechanism deployable by axial movement of said inner sheath within said outer sheath so as to engage said central portion against a venous vessel when said venous treatment apparatus is inserted within said venous vessel in a manner that positions said expansile braid mechanism,said expansile braid mechanism being at least partially porous to thrombus and comprising woven strands having one or more of a weave pattern density, strand thickness, adhesiveness, or strand diameter, such that, upon contact with said thrombus, the expansile braid mechanism substantially breaks the thrombus into particles.
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Abstract
The present invention relates generally to a medical device and method of use, and more specifically to a method and apparatus with coaxial components used to treat venous diseases. The apparatus according to various embodiments operates as an inferior vena cava filter, a clot puller, a clot shredder, and as a prosthetic venous valve.
271 Citations
20 Claims
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1. A venous treatment apparatus comprising:
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a device comprising an inner sheath and an outer sheath, the outer sheath having a proximal portion, an extended distal portion having a length between 50 cm and 400 cm, and a central portion and the inner sheath substantially fitting within the outer sheath, said central portion of the outer sheath including an expansile braid mechanism having a distal end connected to the extended distal portion of the outer sheath and having a proximal end connected to the proximal portion of the outer sheath, said expansile braid mechanism deployable by axial movement of said inner sheath within said outer sheath so as to engage said central portion against a venous vessel when said venous treatment apparatus is inserted within said venous vessel in a manner that positions said expansile braid mechanism, said expansile braid mechanism being at least partially porous to thrombus and comprising woven strands having one or more of a weave pattern density, strand thickness, adhesiveness, or strand diameter, such that, upon contact with said thrombus, the expansile braid mechanism substantially breaks the thrombus into particles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A venous treatment apparatus comprising:
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a device comprising an inner sheath and an outer sheath, the outer sheath having an extended proximal portion, an extended distal portion having a length between 50 cm and 400 cm, and a central portion and the inner sheath substantially fitting within the outer sheath, said central portion of the outer sheath including an expansile braid mechanism having a distal end connected to said extended distal portion of the outer sheath and having a proximal end connected to said proximal portion of the outer sheath, said expansile braid mechanism deployable by axial movement of said inner sheath within said outer sheath so as to engage said central portion against a venous vessel when said venous treatment apparatus is inserted within said venous vessel in a manner that positions said expansile braid mechanism, wherein said extended distal portion is configured to be inserted from a first vascular entry access site and exit from a second vascular entry access site, and wherein an overall length of said device is sufficient to allow user manipulation of said inner sheath and said outer sheath from either or both access sites. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method of treating a target site within a venous vessel through which fluid flows, comprising:
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a) providing a venous treatment apparatus comprising a device comprising an inner sheath and an outer sheath, the outer sheath having a proximal portion, an extended distal portion having a length between 50 cm and 400 cm, and a central portion and the inner sheath substantially fitting within the outer sheath, said central portion of the outer sheath further having an expansile braid mechanism having a distal end connected to said extended distal portion of the outer sheath, b) deploying said expansile braid mechanism by axially moving said inner sheath within said outer sheath so as to expand a diameter of said braid mechanism so that said diameter contacts a venous vessel; and c) translating said expansile braid mechanism in said venous vessel to contact thrombus therein and to break apart the thrombus into particles. - View Dependent Claims (20)
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Specification