US5895411A — Embolizing system

Claim 1

Independent Claim 141 words

An embolization system for entering a vessel at an entry point and occluding a lumen of the vessel at an occlusion site, comprising: a catheter having a lumen, the catheter being formed of a material suitable to follow the lumen of the vessel from the entry point to the occlusion site; a first elongate member, insertable within the lumen of the catheter; an occlusion particle having a receiving passageway therein for receiving the first elongate member so the first elongate member guides movement of the occlusion particle; a pusher, slidable relative to the first elongate member within the lumen of the catheter to engage the occlusion particle and to move the occlusion particle relative to the first elongate member; and wherein the first elongate member comprises a retaining end portion for controllably retaining the occlusion particle on the first elongate member.

Claim 2

Dependent Claim 141 words

An embolization system for entering a vessel at an entry point and occluding a lumen of the vessel at an occlusion site, comprising: a catheter having a lumen, the catheter being formed of a material suitable to follow the lumen of the vessel from the entry point to the occlusion site; a first elongate member, insertable within the lumen of the catheter; an occlusion particle having a receiving passageway therein for receiving the first elongate member so the first elongate member guides movement of the occlusion particle; a pusher, slidable relative to the first elongate member within the lumen of the catheter to engage the occlusion particle and to move the occlusion particle relative to the first elongate member; and wherein the first elongate member comprises a retaining end portion for controllably retaining the occlusion particle on the first elongate member.

Claim 3

Dependent Claim 36 words

The embolization system of claim 1 wherein the first elongate member comprises a wire and wherein the retaining end portion comprises: a curved portion of the wire located generally at the distal end of the wire.

Claim 4

Dependent Claim 31 words

The embolization system of claim 2 wherein the wire comprises: a flexible shape memory material, the curved portion being flexible to release the occlusion particle and return to its curved shape.

Claim 5

Dependent Claim 45 words

The embolization system of claim 1 wherein the pusher comprises: a second elongate member having a receiving passageway so the pusher is slidable along the first elongate member, the first elongate member moving relative to the pusher within the receiving passageway of the occlusion particle.

Claim 6

Dependent Claim 45 words

The embolization system of claim 4 wherein the first elongate member comprises a wire and wherein the pusher comprises: a tube having a lumen, the lumen sized large enough to slidably receive the wire and sized smaller than an outer dimension of the occlusion particle.

Claim 7

Dependent Claim 49 words

The embolization system of claim 5 wherein the pusher has a distal end portion for engaging the occlusion particle and pushing the occlusion particle along the wire so that the occlusion particle slides relative to the wire, the wire passing through the wire receiving passageway in the occlusion particle.

Claim 8

Dependent Claim 32 words

The embolization system of claim 6 wherein the receiving passageway of the occlusion particle comprises a bore defined by the occlusion particle, the bore being large enough to slidably receive the wire.

Claim 9

Dependent Claim 15 words

The embolization system of claim 1 wherein the occlusion particle is formed of radiopaque material.

Claim 10

Independent Claim 113 words

A method of occluding a site in a vessel, comprising: accessing the site in the vessel with a catheter having a lumen; advancing an elongate member through the lumen; pushing a plurality of embolizing articles over the elongate member, through the lumen, to the site; selectively releasing a desired amount of the articles from the elongate member proximate the site in the vessel; and wherein the elongate member is a wire having a curved end portion, and said selectively releasing step further comprises straightening the curved end portion to release the desired amount of articles and allowing the end portion to return to its curved shape to retain additional articles on the wire.

Claim 11

Independent Claim 113 words

A method of occluding a site in a vessel, comprising: accessing the site in the vessel with a catheter having a lumen; advancing an elongate member through the lumen; pushing a plurality of embolizing articles over the elongate member, through the lumen, to the site; selectively releasing a desired amount of the articles from the elongate member proximate the site in the vessel; and wherein the elongate member is a wire having a curved end portion, and said selectively releasing step further comprises straightening the curved end portion to release the desired amount of articles and allowing the end portion to return to its curved shape to retain additional articles on the wire.

Claim 12

Dependent Claim 131 words

An embolization system for entering a vessel at an entry point and occluding a lumen of the vessel at an occlusion site, comprising: a catheter having a lumen, the catheter being formed of a material suitable to follow the lumen of the vessel from the entry point to the occlusion site; a first elongate member, insertable within the lumen of the catheter; an occlusion particle having a receiving passageway therein for receiving the first elongate member so the first elongate member guides movement of the occlusion particle; a pusher, slidable relative to the first elongate member within the lumen of the catheter to engage the occlusion particle and to move the occlusion particle relative to the first elongate member; and wherein the occlusion particle is formed of radiopaque and radioisotope materials.

Claim 13

Dependent Claim 131 words

An embolization system for entering a vessel at an entry point and occluding a lumen of the vessel at an occlusion site, comprising: a catheter having a lumen, the catheter being formed of a material suitable to follow the lumen of the vessel from the entry point to the occlusion site; a first elongate member, insertable within the lumen of the catheter; an occlusion particle having a receiving passageway therein for receiving the first elongate member so the first elongate member guides movement of the occlusion particle; a pusher, slidable relative to the first elongate member within the lumen of the catheter to engage the occlusion particle and to move the occlusion particle relative to the first elongate member; and wherein the occlusion particle is formed of radiopaque and radioisotope materials.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2002-04-19	2002-10-19	2003-04-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2006-04-19	2006-10-19	2007-04-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2010-04-19	2010-10-19	2011-04-20	$7700.00	Window Closed / Lapsed

Embolizing system

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