US5928260A — Removable occlusion system for aneurysm neck

Claim 1

Independent Claim 143 words

A system for treating an aneurysm in a vessel, the aneurysm having a neck communicating with the vessel, the system comprising: an embolic material; and a delivery catheter adapted for delivering the embolic material to the aneurysm, the delivery catheter comprising: a first elongate member; a second elongate member longitudinally movable relative to the first elongate member; a tubular expandable member radially expandable and contractible in response to longitudinal movement of the first and second elongate members relative to one another; and wherein the expandable member is configured, when overlying the neck of the aneurysm, to allow delivery of embolic material to the aneurysm, to inhibit the embolic material from moving out of the aneurysm into the vessel, and to allow blood to flow through the vessel and to flow out of the aneurysm during delivery of the embolic material into the aneurysm.

Claim 2

Independent Claim 143 words

A system for treating an aneurysm in a vessel, the aneurysm having a neck communicating with the vessel, the system comprising: an embolic material; and a delivery catheter adapted for delivering the embolic material to the aneurysm, the delivery catheter comprising: a first elongate member; a second elongate member longitudinally movable relative to the first elongate member; a tubular expandable member radially expandable and contractible in response to longitudinal movement of the first and second elongate members relative to one another; and wherein the expandable member is configured, when overlying the neck of the aneurysm, to allow delivery of embolic material to the aneurysm, to inhibit the embolic material from moving out of the aneurysm into the vessel, and to allow blood to flow through the vessel and to flow out of the aneurysm during delivery of the embolic material into the aneurysm.

Claim 3

Dependent Claim 18 words

The system of claim 1 wherein the first and second elongate members are arranged coaxially with one another.

Claim 4

Dependent Claim 78 words

The system of claim 2 wherein the expandable member comprises: a first collapsible tube generally coaxially arranged with the first and second elongate members, having a first end connected to the first elongate member and a second end connected to the second elongate member and being configured such that longitudinal movement of the first and second elongate members relative to one another causes variation in a distance between the first and second ends of the first collapsible tube.

Claim 5

Dependent Claim 76 words

The system of claim 3 wherein the first collapsible tube comprises: a first plurality of struts having distal ends coupled to one of the first and second elongate members and proximal ends coupled to another of the first and second elongate members, the first struts being configured such that movement of the proximal and distal ends thereof toward one another causes the first struts to bow radially outwardly relative to the first and second elongate members.

Claim 6

Dependent Claim 49 words

The system of claim 4 wherein the first and second elongate members are rotatable relative to one another and configured such that an outer diameter defined by the first struts, when bowed outwardly, is adjustable based on rotation of the first and second elongate members relative to one another.

Claim 7

Dependent Claim 42 words

The system of claim 4 wherein the first struts are configured such that the distal ends of the first struts are angularly offset from the proximal ends of the first struts about an outer periphery of the first and second elongate members.

Claim 8

Dependent Claim 78 words

The system of claim 4 wherein the expandable member comprises: a second collapsible tube generally coaxially arranged with the first collapsible tube having a first end operably connected to the first elongate member and a second end operably connected to the second elongate member and being configured such that longitudinal movement of the first and second elongate members relative to one another causes variation in a distance between the first and second ends of the second collapsible tube.

Claim 9

Dependent Claim 76 words

The system of claim 7 wherein the second collapsible tube comprises: a second plurality of struts having distal ends coupled to one of the first and second elongate members and proximal ends coupled to another of the first and second elongate members, the second struts being configured such that movement of the proximal and distal ends thereof toward one another causes the second struts to bow radially outwardly relative to the first and second elongate members.

Claim 10

Dependent Claim 26 words

The system of claim 8 wherein the second struts are angularly offset from the first struts about the periphery of the first and second elongate members.

Claim 11

Dependent Claim 32 words

The system of claim 4 and further comprising: a thread-like member connected to the first struts and configured to reside in spaces between the first struts when the first struts are expanded.

Claim 12

Dependent Claim 21 words

The system of claim 4 wherein the first struts have distal regions with a larger surface area than proximal regions thereof.

Claim 13

Dependent Claim 15 words

The system of claim 11 wherein the proximal regions of the first struts are perforated.

Claim 14

Dependent Claim 27 words

The system of claim 4 and further comprising: a perforated covering disposed about the first struts and configured to be carried radially outwardly with the first struts.

Claim 15

Dependent Claim 25 words

The system of claim 1 wherein the expandable member comprises: an expandable mesh disposed about an outer periphery of the first and second elongate members.

Claim 16

Dependent Claim 25 words

The system of claim 14 wherein the mesh has at least one aperture therein sized to receive a delivery device therethrough for delivering embolic material.

Claim 17

Dependent Claim 42 words

The system of claim 1 wherein the expandable member comprises: a self expanding device biased to be retained in a collapsed position in response to the first and second elongate members being maintained in a first longitudinal position relative to one another.

Claim 18

Dependent Claim 101 words

The system of claim 16 wherein the self-expanding device comprises: a plurality of biased members biased to an expanded position relative to the elongate members and configured such that when the elongate members are in the first position relative to one another, the biased members are held in a radially contracted position closely approximating an outer diameter of at least one of the first and second elongate members and when the elongate members are in a second position relative to one another, the second position being longitudinally offset from the first position, the biased members are allowed to expand radially outwardly.

Claim 19

Dependent Claim 98 words

The system of claim 17 wherein the first elongate member includes a hub with a retaining rim, and wherein the second elongate member includes the biased members, the retaining rim and the biased members having cooperable surfaces such that when the first and second elongate members are in the first position, the retaining rim engages the biased members retaining them in a collapsed position, and when the first and second elongate members are in the second position, the cooperable surfaces are out of engagement with one another allowing the biased members to deploy to a radially expanded position.

Claim 20

Dependent Claim 39 words

The system of claim 1 and further comprising: a third elongate member cooperable with the first and second elongate members and having a delivery portion proximate a distal end thereof and configured to deliver embolic material to the aneurysm.

Claim 21

Dependent Claim 26 words

The system of claim 1 wherein one of the first and second elongate members includes a delivery portion for delivering the embolic material to the aneurysm.

Claim 22

Independent Claim 99 words

A method of treating an aneurysm having a neck communicating with a vessel, comprising: providing a delivery device having a delivery portion suitable for delivery of embolic material; placing the delivery device in the neck of the aneurysm; placing a removable expandable member proximate the neck; expanding the expandable member to overlie substantially the entire neck; delivering embolic material to the aneurysm with the delivery device; and holding the expandable member over the neck to inhibit movement of the embolic material out of the aneurysm, while allowing flow of blood through the vessel past the neck of the aneurysm.

Claim 23

Independent Claim 99 words

A method of treating an aneurysm having a neck communicating with a vessel, comprising: providing a delivery device having a delivery portion suitable for delivery of embolic material; placing the delivery device in the neck of the aneurysm; placing a removable expandable member proximate the neck; expanding the expandable member to overlie substantially the entire neck; delivering embolic material to the aneurysm with the delivery device; and holding the expandable member over the neck to inhibit movement of the embolic material out of the aneurysm, while allowing flow of blood through the vessel past the neck of the aneurysm.

Claim 24

Dependent Claim 31 words

The method of claim 21 wherein holding the expandable member over the neck comprises: allowing blood to flow out of the aneurysm during delivery of the embolic material to the aneurysm.

Claim 25

Dependent Claim 50 words

The method of claim 22 wherein the expandable member is provided on a first elongate member and wherein holding the expandable member over the neck comprises: pushing longitudinally on the first elongate member such that the expandable member engages a wall of the vessel about the neck of the aneurysm.

Claim 26

Dependent Claim 83 words

The method of claim 21 wherein placing an expandable member proximate the neck comprises: providing a first elongate member and a second elongate member longitudinally movable relative to the first elongate member, wherein the expandable member is operably coupled to a distal region of the first and second elongate members; and wherein expanding the expandable member includes longitudinally moving the first and second elongate members relative to one another such that the expandable member moves between an expanded position and a contracted position.

Claim 27

Dependent Claim 85 words

The method of claim 24 wherein placing an expandable member proximate the neck comprises: providing a first collapsible tube generally coaxially arranged with the first and second elongate members, having a first end connected to the first elongate member and a second end connected to the second elongate member; and wherein expanding the expandable member includes longitudinally moving the first and second elongate members relative to one another to cause variation in a distance between the first and second ends of the first collapsible tube.

Claim 28

Dependent Claim 96 words

The method of claim 25 wherein providing a first collapsible tube comprises: providing a first plurality of struts having distal ends coupled to one of the first and second elongate members and proximal ends coupled to another of the first and second elongate members; and wherein expanding the expandable member includes manipulating the first and second elongate members relative to one another to cause movement of the proximal and distal ends of the first plurality of struts toward one another causing the first struts to bow radially outwardly relative to the first and second elongate members.

Claim 29

Dependent Claim 49 words

The method of claim 26 wherein the first and second elongate members are rotatable relative to one another and wherein expanding the expandable member comprises: rotating the first and second elongate members relative to one another to adjust an outer diameter defined by the first struts, when bowed outwardly.

Claim 30

Dependent Claim 85 words

The method of claim 26 wherein placing the expandable member proximate the neck comprises: providing a second collapsible tube generally coaxially arranged with the first collapsible tube having a first end operably connected to the first elongate member and a second end operably connected to the second elongate member; and wherein expanding the expandable member includes longitudinally moving the first and second elongate members relative to one another to cause variation in a distance between the first and second ends of the second collapsible tube.

Claim 31

Dependent Claim 78 words

The method of claim 28 wherein providing a second collapsible tube comprises: providing a second plurality of struts having distal ends coupled to one of the first and second elongate members and proximal ends coupled to another of the first and second elongate members; and wherein expanding the expandable member includes moving the proximal and distal ends thereof toward one another to cause the second struts to bow radially outwardly relative to the first and second elongate members.

Claim 32

Dependent Claim 64 words

The method of claim 29 wherein the second struts are angularly offset from the first struts about the periphery of the first and second elongate members and wherein expanding the expandable member includes causing the first and second struts to bow outwardly such that radially outwardly displaced portions of the second struts reside in spaces between radially outwardly displaced portions of the first struts.

Claim 33

Dependent Claim 101 words

The method of claim 21 wherein a first portion of the expandable member, when expanded, has apertures therein such that the first portion has a first surface area per unit of area, and wherein a second portion of the expandable member, when expanded, has apertures therein such that the second portion has a second surface area per unit of area, the second surface area being smaller than the first surface area, and wherein holding the expandable member over the neck comprises: holding the first portion of the expandable member over the neck while retaining the second portion in the parent vessel.

Claim 34

Dependent Claim 48 words

The method of claim 24 wherein the expandable member comprises an expandable mesh disposed about an outer periphery of the first and second elongate members and wherein expanding the expandable member comprises: manipulating the first and second elongate members to move the expandable mesh to the expanded position.

Claim 35

Dependent Claim 45 words

The method of claim 32 wherein the mesh has at least one aperture therein sized to receive a delivery device therethrough for delivering embolic material; and wherein delivering embolic material comprises: delivering the embolic material with the delivery device through the at least one aperture.

Claim 36

Dependent Claim 32 words

The method of claim 33 wherein delivering the embolic material with the delivery device comprises: delivering the embolic material through a delivery portion in one of the first and second elongate members.

Claim 37

Dependent Claim 108 words

The method of claim 24 wherein placing an expandable member proximate the neck comprises: providing a first elongate member and a second elongate member longitudinally movable relative to the first elongate member, wherein the expandable member is operably coupled to a distal region of at least one of the first and second elongate members; and providing a self expanding device biased to be retained in a collapsed position in response to the first and second elongate members being maintained in a first longitudinal position relative to one another; and wherein expanding the expandable member comprises moving the first and second elongate members out of the first longitudinal position.

Claim 38

Dependent Claim 110 words

The method of claim 35 wherein providing the self-expanding device comprises: providing a plurality of biased members biased to an expanded position relative to the elongate members and configured such that when the elongate members are in the first position relative to one another, the biased members are held in a radially contracted position closely approximating an outer diameter of at least one of the first and second elongate members; and wherein expanding the expandable member comprises moving the elongate members to a second position relative to one another, the second position being longitudinally offset from the first position, such that the biased members are allowed to expand radially outwardly.

Claim 39

Dependent Claim 105 words

The method of claim 36 wherein the first elongate member includes a hub with a retaining rim, and wherein the second elongate member includes the biased members, the retaining rim and the biased members having cooperable surfaces such that when the first and second elongate members are in the first position, the retaining rim engages the biased members retaining them in a collapsed position; and wherein expanding the expandable member includes moving the first and second elongate members to the second position such that the cooperable surfaces are out of engagement with one another allowing the biased members to deploy to a radially expanded position.

Claim 40

Dependent Claim 56 words

The method of claim 21 wherein the delivery device comprises a third elongate member cooperable with the first and second elongate members and wherein delivering embolic material to the aneurysm comprises moving a delivery portion of the third elongate member into the aneurysm and delivering the embolic material to the aneurysm with the third elongate member.

Claim 41

Dependent Claim 37 words

The method of claim 21 and further comprising: allowing the embolic material to remain in the aneurysm for a time period while holding the expandable member over the neck; and removing the expandable member from the vessel.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2002-07-26	2003-01-25	2003-07-27	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2006-07-26	2007-01-25	2007-07-27	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2010-07-26	2011-01-25	2011-07-27	$7700.00	Window Closed / Lapsed

Removable occlusion system for aneurysm neck

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