US 11,141,164 B2Granted

Shape-memory polymer foam device for treating aneurysms

AssigneesLawrence Livermore National Security, LLC, The Texas A&M University System

InventorsJason M. Ortega, William J. Benett, Ward Small, Thomas S. Wilson, Duncan J. Maitland, Jonathan Hartman

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Abstract

A system for treating an aneurysm in a blood vessel or vein, wherein the aneurysm has a dome, an interior, and a neck. The system includes a shape memory polymer foam in the interior of the aneurysm between the dome and the neck. The shape memory polymer foam has pores that include a first multiplicity of pores having a first pore size and a second multiplicity of pores having a second pore size. The second pore size is larger than said first pore size. The first multiplicity of pores are located in the neck of the aneurysm. The second multiplicity of pores are located in the dome of the aneurysm.

Claims19

Dependent claims

An apparatus to treat an aneurysm comprising:

a shape memory polymer (SMP) foam to be located in the aneurysm interior;
a delivery conduit;
a wire backbone configured to permanently remain in the aneurysm after implantation of the SMP foam into the aneurysm;
and
a means for advancing the backbone through vasculature, the means for advancing the backbone being coupled to a proximal end portion of the backbone;
wherein the SMP foam has pores that include a first multiplicity of pores having a first pore size and a second multiplicity of pores having a second pore size, the second pore size being larger than the first pore size;
wherein the SMP foam comprises first and second individual separate pieces of SMP foam that (a) are not permanently directly connected to each other, and (b) are distributed along the backbone;
wherein the first individual separate piece of SMP foam includes the first multiplicity of pores and the second individual separate piece of SMP foam includes the second multiplicity of pores;
wherein the first individual separate piece of SMP foam is between the means for advancing the backbone and the second individual separate piece of SMP foam;
wherein the first and second individual separate pieces of SMP foam are arranged to deploy from the delivery conduit and into the vasculature in serial fashion with the second individual piece of SMP foam deploying from the delivery conduit before the first individual piece of SMP foam deploys from the delivery conduit.

7 more elements

An apparatus comprising:

a shape memory polymer (SMP) foam to be located in a physical anomaly;
a delivery conduit;
a backbone wire to remain in the anomaly after implantation of the SMP foam into the anomaly;
and
a delivery wire coupled to a proximal end portion of the backbone wire;
wherein (a) the SMP foam has first pores having a first pore size and second pores having a second pore size that is larger than the first pore size, (b) the SMP foam comprises first and second individual separate SMP foam pieces which are not permanently directly connected to each other and which are distributed along the backbone wire, (c) the first SMP foam piece includes the first pores and the second SMP foam piece includes the second pores, (d) the first SMP foam piece is proximal to the second SMP foam piece, (e) the first SMP foam piece is between the delivery wire and the second foam piece;
and (f) the first and second SMP foam pieces are arranged to deploy from the delivery conduit and into vasculature in serial fashion with the second SMP foam piece deploying from the delivery conduit before the first SMP foam piece deploys from the delivery conduit.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/599,133Filed 18 May 2017 · continuation
Priority: 13 Mar 2013
Published: US 2017/0252045 A17 Sep 2017
Granted: 12 Oct 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

A61B 17/12113
In a blood vessel: within an aneurysm
A61B 17/12022
For ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord: occluding by internal devices, e.g.…
A61B 17/12031
Type of occlusion: complete occlusion
A61B 17/12181
Characterised by the type of occluding device: formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or…

Family

Application13/798,740Parent of this continuation · filed 13 Mar 2013
US 2017/0252045 A1Pre-grant publication · published 7 Sep 2017
US 9,662,119 B2Parent of this continuation
US 2014/0277057 A1Published application
US 11,141,164 B2This patent

From the US filing history. Foreign family members aren’t listed.