Intravascular filter with centering member
First Claim
1. A filter system, comprising:
- an intravascular filter including a plurality of elongated filter legs operatively coupled to an apical head;
wherein the apical head has a proximal end and a distal end;
wherein the elongated filter legs extend proximally of the proximal end of the apical head when the filter is deployed within a blood vessel;
a filter sheath having a first end, a proximal end, and an interior lumen adapted to contain the intravascular filter; and
a centering hoop including an elongated wire adapted to assume a preset shape when deployed within a blood vessel, wherein the centering hoop is disposed distally of the distal end of the apical head and radially expands against the inner wall of the blood vessel when the filter is deployed;
wherein the centering hoop is slidably disposed within an interior lumen of the apical head;
wherein the elongated wire includes a first end and a proximal end;
wherein the preset shape of the elongated wire includes a radial section and a hoop section, the hoop section extending circumferentially at least one full revolution about a generally longitudinal axis of the intravascular filter and filter sheath.
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Accused Products
Abstract
Devices and methods for centering an intravascular filter within a blood vessel are disclosed. A filter system in accordance with an exemplary embodiment of the present invention may include an intravascular filter, a filter sheath adapted to contain the intravascular filter, and a centering member adapted to assume a preset shape when deployed within a blood vessel. The centering member may comprise an elongated wire having a hoop section adapted to radially expand against the inner wall of the blood vessel when deployed. In some embodiments, multiple centering members can be employed to facilitate centering of both the intravascular filter and the filter sheath within the blood vessel, if desired.
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Citations
21 Claims
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1. A filter system, comprising:
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an intravascular filter including a plurality of elongated filter legs operatively coupled to an apical head; wherein the apical head has a proximal end and a distal end; wherein the elongated filter legs extend proximally of the proximal end of the apical head when the filter is deployed within a blood vessel; a filter sheath having a first end, a proximal end, and an interior lumen adapted to contain the intravascular filter; and a centering hoop including an elongated wire adapted to assume a preset shape when deployed within a blood vessel, wherein the centering hoop is disposed distally of the distal end of the apical head and radially expands against the inner wall of the blood vessel when the filter is deployed; wherein the centering hoop is slidably disposed within an interior lumen of the apical head; wherein the elongated wire includes a first end and a proximal end; wherein the preset shape of the elongated wire includes a radial section and a hoop section, the hoop section extending circumferentially at least one full revolution about a generally longitudinal axis of the intravascular filter and filter sheath. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A filter system, comprising:
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an intravascular filter including a plurality of elongated filter legs operatively coupled to an apical head; wherein the apical head has a proximal end and a distal end; wherein the elongated filter legs extend proximally from the proximal end of the apical head when the filter is deployed within a blood vessel; a filter sheath having a first end, a proximal end, and an interior lumen adapted to contain the intravascular filter; and an elongated wire slidably disposed within an interior lumen of the apical head and including a first end, a proximal end, and a first section adapted to assume a preset shape when deployed within a blood vessel, said preset shape including a radial section and a hoop section, wherein the hoop section is disposed distally of the distal end of the apical head and radially expands against the inner wall of the blood vessel when the filter is deployed and the hoop section extends circumferentially at least one full revolution about a generally longitudinal axis of the intravascular filter and filter sheath. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification