Expandable medical device and method of use thereof

Patent metadata

Field	Value
Publication number	US-11213661-B2
Application number	US-201816229095-A
Country	US
Kind code	B2
Filing date	Dec 21, 2018
Priority date	Jan 5, 2018
Publication date	Jan 4, 2022
Grant date	Jan 4, 2022

Abstract

The present invention relates generally to expandable medical devices including a light-activated shape-memory polymer. In certain embodiments, the devices include, for example, balloon catheters, used to treat narrowed or obstructed portions of a body vessel, and retrieval devices, used to remove obstructions from a body vessel. Certain aspects of the invention relate to methods of manufacturing and using such devices.

First claim

I claim:

1. An implantable medical device comprising:
an elongated catheter extending from a distal end to a proximal end and comprising a first lumen;
a plurality of optical fibers extending in the first lumen from the proximal end to the distal end;
an expandable body attaching to a distal end of the elongated catheter, wherein the expandable body comprises an light-sensitive polymeric material,
wherein a distal end of the plurality of optical fibers is optically coupled to the light-sensitive polymeric material,
wherein the expandable body comprises a hollow tubular body having a tubular wall comprising the light-sensitive polymeric material and defining an internal lumen, and
wherein the tubular wall comprises of plurality of interconnected segments, wherein each segment comprises a node point comprising the light-sensitive polymeric material.

2. The implantable medical device of claim 1 , further comprising a light source optically coupled to a proximal end of the plurality of optical fibers.

3. The implantable medical device of claim 2 , wherein the light source is selected from the group consisting of a laser and a light emitting diode.

4. The implantable medical device of claim 1 , the expandable body having an expanded configuration and a collapsed configuration, wherein the expandable body transitions from the collapsed configuration to the expanded configuration upon optical illumination of the light-sensitive polymeric material.

5. The implantable medical device of claim 1 , wherein the light-sensitive polymeric material comprises a polymer coupled to a material selected from the group consisting of cinnamic acid and cinnamylidene acetic acid.

6. The implantable medical device of claim 1 , where at least one of the interconnected segments has expanded configuration and a collapsed configuration, wherein transition from the collapsed configuration to the expanded configuration comprises lengthening of the segment in a first direction without a change in dimension is a second perpendicular dimension.

7. The implantable medical device of claim 1 , wherein the expandable body is selected from the group consisting of a balloon, a stent, a stent graft and a retrieval device.

8. The implantable medical device of claim 1 , wherein the expandable body is a stent or a balloon.

9. The implantable medical device of claim 1 , wherein the expandable body comprises a plurality of holes, wherein at least one of the plurality of holes increases in size upon expansion of the expandable body.

10. An implantable medical device comprising:
an elongated catheter comprising a first lumen;
a plurality of optical fibers extending from a proximal end to a distal end of the first lumen;
a light source optically coupled to a proximal end of the plurality of optical fibers;
an hollow expandable body having a plurality of holes and attaching to a distal end of the elongated catheter, wherein the expandable body comprises an light-sensitive polymeric material,
wherein a distal end of the plurality of optical fibers is optically coupled to the light-sensitive polymeric material,
wherein there are a plurality of light sources, and
wherein a first portion of the plurality of optical fibers is optically coupled to a first group of the plurality of light sources and to the light-sensitive polymeric material at a first region of the expandable body and wherein a second portion of the optical fibers is optically coupled to a second group of the plurality of light sources and to the light-sensitive polymeric material at a second region of the expandable body.

11. The implantable medical device of claim 10 , further comprising a second lumen extending from a proximal end to a distal end of the elongated catheter.

12. The implantable medical device of claim 10 , wherein the plurality of light sources are selected from the group consisting of a laser and a light emitting diode.

13. The implantable medical device of claim 10 , wherein the implantable medical device comprises a balloon.

14. The implantable medical device kit of claim 10 , wherein the light-sensitive polymeric material comprises a polymer coupled to a material selected from the group consisting of cinnamic acid and cinnamylidene acetic acid.

Assignees

• Cook Medical Technologies Llc

Inventors

• Spindler Ralf

Classifications

• A61L29/041 Primary

  obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• A61L2300/416

  Anti-neoplastic or anti-proliferative or anti-restenosis or anti-angiogenic agents, e.g. paclitaxel, sirolimus · CPC title

• A61L31/16

  Biologically active materials, e.g. therapeutic substances {(A61L31/047 takes precedence)} · CPC title

• A61L31/048

  obtained by reactions only involving carbon-to-carbon unsaturated bonds (A61L31/041 takes precedence) · CPC title

• A61L29/14

  Materials characterised by their function or physical properties {, e.g. lubricating compositions} · CPC title