Medical device
First Claim
1. A medical device for insertion into a bodily vessel to treat an intracranial aneurysm, the device comprising:
- a mechanically expandable device, expandable from a first position to a second position such that, in the second position, an exterior surface of the mechanically expandable device engages with an inner surface of the vessel so as to maintain a fluid pathway through the vessel, the mechanically expandable device comprising a plurality of circumferential rings, a plurality of first longitudinal struts, and a plurality of second longitudinal struts, wherein each of the first longitudinal struts connects only two axially adjacent circumferential rings, and wherein each of the second longitudinal struts connects three axially adjacent circumferential rings, such that at least one of the first longitudinal struts is circumferentially adjacent to at least one of the second longitudinal struts, wherein the mechanically expandable device comprises a region bounded by a pair of boundary lines extending only longitudinally from a proximal end of the mechanically expandable device to a distal end of the mechanically expandable device, wherein a total number of the first longitudinal struts in the region exceeds a total number of the second longitudinal struts in the region; and
a porous membrane, expandable in response to expansion of the mechanically expandable device;
wherein at least a portion of the membrane is secured to the mechanically expandable device, such that a proximal end of the membrane is proximate to the proximal end of the mechanically expandable device, and a distal end of the membrane is proximate to the distal end of the mechanically expandable device; and
wherein the membrane has a substantially uniform porosity over a length extending from the distal end of the membrane to the proximal end of the membrane, the membrane having pores with a size between about 20 microns and about 100 microns and a distance between adjacent pores of the membrane being less than 75 microns, the membrane having a width that is less than 0.001 inches; and
wherein, when the mechanically expandable device is expanded in the bodily vessel, adjacent to the aneurysm, the membrane is configured to;
(i) obstruct blood flow from the vessel into the aneurysm such that blood flow into the aneurysm is reduced; and
(ii) permit blood flow through pores in the membrane and into branch vessels arising from the bodily vessel so as not to inhibit blood supply functions of perforator vessels.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device for insertion into a bodily vessel to treat an aneurysm (201), the device comprising: a mechanically expandable device (202) expandable from a first position to a second position, said mechanically expandable device (202) is expanded radially outwardly to the second position such that the exterior surface of said mechanically expandable (202) engages with the inner surface of the vessel so as to maintain a fluid pathway through said vessel; and a membrane (203) expandable from a first position to a second position in response to expansion of said mechanically expandable device (202), said membrane (203) obstructing blood circulation to the aneurysm (201) when expanded to the second position, and at least a portion of the membrane (203) is secured to the mechanically expandable device (202) to maintain the position of the membrane (203) relative to the mechanically expandable device (202) when expanded to the second position.
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Citations
68 Claims
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1. A medical device for insertion into a bodily vessel to treat an intracranial aneurysm, the device comprising:
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a mechanically expandable device, expandable from a first position to a second position such that, in the second position, an exterior surface of the mechanically expandable device engages with an inner surface of the vessel so as to maintain a fluid pathway through the vessel, the mechanically expandable device comprising a plurality of circumferential rings, a plurality of first longitudinal struts, and a plurality of second longitudinal struts, wherein each of the first longitudinal struts connects only two axially adjacent circumferential rings, and wherein each of the second longitudinal struts connects three axially adjacent circumferential rings, such that at least one of the first longitudinal struts is circumferentially adjacent to at least one of the second longitudinal struts, wherein the mechanically expandable device comprises a region bounded by a pair of boundary lines extending only longitudinally from a proximal end of the mechanically expandable device to a distal end of the mechanically expandable device, wherein a total number of the first longitudinal struts in the region exceeds a total number of the second longitudinal struts in the region; and a porous membrane, expandable in response to expansion of the mechanically expandable device; wherein at least a portion of the membrane is secured to the mechanically expandable device, such that a proximal end of the membrane is proximate to the proximal end of the mechanically expandable device, and a distal end of the membrane is proximate to the distal end of the mechanically expandable device; and wherein the membrane has a substantially uniform porosity over a length extending from the distal end of the membrane to the proximal end of the membrane, the membrane having pores with a size between about 20 microns and about 100 microns and a distance between adjacent pores of the membrane being less than 75 microns, the membrane having a width that is less than 0.001 inches; and wherein, when the mechanically expandable device is expanded in the bodily vessel, adjacent to the aneurysm, the membrane is configured to; (i) obstruct blood flow from the vessel into the aneurysm such that blood flow into the aneurysm is reduced; and (ii) permit blood flow through pores in the membrane and into branch vessels arising from the bodily vessel so as not to inhibit blood supply functions of perforator vessels. - 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, 25, 26, 27, 28, 29, 30)
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31. A medical device for treating a bifurcation or trifurcation intracranial aneurysm between at least two bodily vessels, the device comprising:
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a first mechanically expandable device, expandable from a first position to a second position such that, in the second position, an exterior surface of the first mechanically expandable device is configured to engage an inner surface of a first branch vessel arising from a parent vessel so as to maintain a fluid pathway through the first branch vessel, the first mechanically expandable device comprising a plurality of circumferential rings, a plurality of first longitudinal struts, and a plurality of second longitudinal struts, wherein each of the first longitudinal struts connects only two axially adjacent circumferential rings, and wherein each of the second longitudinal struts connects three axially adjacent circumferential rings, wherein each of the plurality of first longitudinal struts is straight along an entire length thereof, wherein the first mechanically expandable device comprises a region bounded by a pair of boundary lines extending only longitudinally from a proximal end of the first mechanically expandable device to a distal end of the first mechanically expandable device, wherein a total number of the first longitudinal struts in the region exceeds a total number of the second longitudinal struts in the region; a second mechanically expandable device, expandable from a first position to a second position such that, in the second position, an exterior surface of the second mechanically expandable device is configured to engage an inner surface of a second branch vessel arising from the parent vessel so as to maintain a fluid pathway through the second branch vessel; and a porous membrane, at least a portion of a proximate end of the membrane is secured to the first mechanically expandable device and a distal end of the membrane is secured to the second mechanically expandable device; wherein the membrane has a substantially uniform porosity over a length extending from the distal end of the membrane to the proximal end of the membrane and a distance between adjacent pores of the membrane being less than 75 microns, the membrane having a thickness that is less than 0.001 inches and a durometer of 75 A Shore; and wherein, when the first mechanically expandable device is expanded in the first branch vessel adjacent to the aneurysm and the second mechanically expandable device is expanded in the second branch vessel adjacent to the aneurysm, the membrane; (i) obstructs blood flow into the aneurysm such that blood flow into the aneurysm is reduced; and (ii) permits blood flow through pores in the membrane and into perforators and/or microscopic branches of brain arteries so as not to inhibit blood supply functions of perforator vessels. - View Dependent Claims (32, 33)
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34. A medical device for insertion into a bodily vessel to treat an intracranial aneurysm, the device comprising:
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a mechanically expandable device, expandable from a first position to a second position such that, in the second position, an exterior surface of the mechanically expandable device engages an inner surface of the vessel so as to maintain a fluid pathway through the vessel, the mechanically expandable device comprising a plurality of circumferential rings, a plurality of first longitudinal struts, and a plurality of second longitudinal struts, wherein each of the first longitudinal struts connects only two axially adjacent circumferential rings, and wherein each of the second longitudinal struts connects three axially adjacent circumferential rings, such that an axially adjacent pair of circumferential rings are connected only by one of the second longitudinal struts, wherein each of the plurality of second longitudinal struts is straight along an entire length thereof, wherein the mechanically expandable device comprises a region bounded by a pair of boundary lines extending parallel to a central axis of the mechanically expandable device from a proximal end of the mechanically expandable device to a distal end of the mechanically expandable device, wherein a total number of the first longitudinal struts in the region exceeds a total number of the second longitudinal struts in the region; and a porous membrane, expandable in response to expansion of the mechanically expandable device; wherein at least a portion of the membrane is secured to the mechanically expandable device, such that a proximal end of the membrane is proximate to the proximal end of the mechanically expandable device, and a distal end of the membrane is proximate to the distal end of the mechanically expandable device; and wherein the membrane has a substantially uniform porosity over a length extending from the distal end of the membrane to the proximal end of the membrane and a distance between adjacent pores of the membrane being less than 75 microns, the membrane having a thickness that is less than 0.001 inches and having a tensile strength of 7500 psi; and wherein, when the mechanically expandable device is expanded in the bodily vessel, adjacent to the aneurysm, the membrane; (i) obstructs blood flow from the vessel into the aneurysm such that blood flow into the aneurysm reduced; and (ii) permits blood flow through pores in the membrane and into branch vessels arising from the bodily vessel so as not to inhibit blood supply functions of perforator vessels. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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63. A medical device for treating a bifurcation or trifurcation intracranial aneurysm between at least two bodily vessels, the device comprising:
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a first mechanically expandable device, expandable from a first position to a second position such that, in the second position, an exterior surface of the first mechanically expandable device engages an inner surface of a first branch vessel arising from a parent vessel so as to maintain a fluid pathway through the first branch vessel, the mechanically expandable device comprising a plurality of circumferential rings, a plurality of first longitudinal struts, and a plurality of second longitudinal struts, wherein each of the first longitudinal struts connects only two axially adjacent circumferential rings, and wherein each of the second longitudinal struts connects only three axially adjacent circumferential rings, such that at least one of the first longitudinal struts is circumferentially adjacent to at least one of the second longitudinal struts, wherein at least some longitudinally adjacent pairs of the first longitudinal struts are not separated longitudinally by one of the second longitudinal struts; a second mechanically expandable device, expandable from a first position to a second position such that, in the second position, an exterior surface of the second mechanically expandable device engages an inner surface of a second branch vessel arising from the parent vessel so as to maintain a fluid pathway through the second branch vessel; and a porous membrane, at least a portion of a proximate end of the membrane is secured to the first mechanically expandable device and a distal end of the membrane is secured to the second mechanically expandable device; wherein the membrane has a substantially uniform porosity over a length extending from the distal end of the membrane to the proximal end of the membrane, and comprises pores with a size between about 20 microns and about 100 microns and a distance between adjacent pores of the membrane being less than 75 microns, a thickness of the membrane being less than 0.001 inches; and wherein, when the first mechanically expandable device is expanded in the first branch vessel adjacent to the aneurysm and the second mechanically expandable device is expanded in the second branch vessel adjacent to the aneurysm, the membrane; (i) obstructs blood flow into the aneurysm such that blood flow into the aneurysm is reduced; and (ii) permits blood flow through pores in the membrane and into perforators and/or microscopic branches of brain arteries so as not to inhibit blood supply functions of perforators vessels. - View Dependent Claims (64, 65, 66)
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67. A medical device for insertion into a bodily vessel to treat an intracranial aneurysm, the device comprising:
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a mechanically expandable device, expandable from a contracted position to an expanded position such that, in the expanded position, an exterior surface of the mechanically expandable device engages an inner surface of the vessel, the mechanically expandable device comprising a plurality of circumferential rings, a plurality of first longitudinal struts, and a plurality of second longitudinal struts, wherein each of the first longitudinal struts connects only two axially adjacent circumferential rings, and wherein each of the second longitudinal struts connects three axially adjacent circumferential rings, wherein each of the second longitudinal struts comprises a radiopaque marker forming a ring, wherein at least some longitudinally adjacent pairs of the first longitudinal struts are not separated longitudinally by one of the second longitudinal struts; and a porous membrane, with a thickness that is less than 0.001 inches, expandable in response to expansion of the mechanically expandable device, the porous membrane; (i) having a substantially uniform porosity over a length extending from a distal end of the membrane to a proximal end of the membrane and a distance between adjacent pores of the membrane being less than 75 microns; (ii) being secured to the mechanically expandable device, such that the proximal end of the membrane is proximate a proximal end of the mechanically expandable device, and the distal end of the membrane is proximate a distal end of the mechanically expandable device; and (iii) being configured to, when expanded in the bodily vessel adjacent the aneurysm, reduce blood flow from the vessel into the aneurysm and permit blood supply to perforator vessels through pores of the membrane along the length of the membrane so as not to inhibit blood supply functions of perforator vessels.
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68. A medical device for insertion into a bodily vessel to treat an intracranial aneurysm, the device comprising:
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a mechanically expandable device, expandable from a first position to a second position such that, in the second position, an exterior surface of the mechanically expandable device is sized and configured to engage an inner surface of the vessel so as to maintain a fluid pathway through the vessel, the mechanically expandable device comprising a plurality of circumferential rings, a plurality of first longitudinal struts, and a plurality of second longitudinal struts, wherein each of the first longitudinal struts connects only two axially adjacent circumferential rings, and wherein each of the second longitudinal struts connects three axially adjacent circumferential rings, wherein each of the second longitudinal struts comprises a radiopaque marker forming a ring, wherein at least some longitudinally adjacent pairs of the first longitudinal struts are not separated longitudinally by one of the second longitudinal struts; and a porous membrane, secured to the mechanically expandable device, having a substantially uniform porosity, the membrane, having a thickness that is less than 0.001 inches, being expandable in response to expansion of the mechanically expandable device and, when the mechanically expandable device is in the second position, the membrane comprising pores with a size between about 20 microns and about 100 microns and a distance between adjacent pores of the membrane being less than 75 microns, such that the membrane reduces blood flow from the vessel into the aneurysm and permits blood supply to small branch vessels, branching from the vessel, through pores of the membrane so as not to inhibit blood supply functions of the small branch vessels.
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Specification