Method of making a vascular occlusion device

Patent metadata

Field	Value
Publication number	US-11284902-B2
Application number	US-201916264941-A
Country	US
Kind code	B2
Filing date	Feb 1, 2019
Priority date	Feb 1, 2018
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

A method of making a vascular occlusion device may include cutting a tubular member to form an expandable frame including a first hub integrally formed with the expandable frame adjacent a first end of the expandable frame, and a plurality of longitudinally-oriented struts extending in a direction opposite the first end; heat-setting the expandable frame to define an expanded configuration of the expandable frame; sliding a constrainment member over the plurality of longitudinally-oriented struts, the constrainment member being formed using additive manufacturing technology; fixedly securing the constrainment member to the plurality of longitudinally-oriented struts to define a second hub of the expandable frame; and cutting the plurality of longitudinally-oriented struts adjacent the constrainment member and opposite the first end relative to the constrainment member.

First claim

What is claimed is:

1. A vascular occlusion device, comprising:
an expandable frame cut from a tubular member, the expandable frame including:
a first hub integrally formed with the expandable frame adjacent a first end of the expandable frame, and
a plurality of longitudinally-oriented struts extending in a direction opposite the first end; and

a constrainment member formed using additive manufacturing technology, the constrainment member being fixedly secured to the plurality of longitudinally-oriented struts to define a second hub adjacent a second end of the expandable frame,
wherein the constrainment member includes a plurality of internal teeth open to a central passage,
wherein the plurality of internal teeth defines a tooth length, the tooth length being about 75% or less of a length of the constrainment member.

2. The vascular occlusion device of claim 1 , wherein the tooth length is about 50% or less of the length of the constrainment member.

3. The vascular occlusion device of claim 1 , wherein each adjacent pair of internal teeth defines one longitudinally-oriented slot configured to receive one of the plurality of longitudinally-oriented struts.

4. The vascular occlusion device of claim 3 , wherein each longitudinally-oriented strut is received in a different longitudinally-oriented slot.

5. The vascular occlusion device of claim 1 , further comprising a centering rod disposed within the central passage.

6. The vascular occlusion device of claim 5 , wherein the centering rod urges the plurality of longitudinally-oriented struts into longitudinally-oriented slots defined by the plurality of internal teeth.

7. A vascular occlusion device, comprising:
an expandable frame laser cut from a tubular member, the expandable frame including:
a proximal hub integrally formed with the expandable frame adjacent a proximal end of the expandable frame,
a plurality of closed cells forming a series of adjacent rows of cells along a length of the expandable frame, the proximal hub having a fixed outer diameter less than an outer diameter of the series of adjacent rows of cells in an expanded configuration and
a plurality of longitudinally-oriented struts extending distally away from the plurality of closed cells; and

a constrainment member having a plurality of internal teeth, the plurality of internal teeth extending along less than a full length of the constrainment member;
wherein the constrainment member is fixedly attached with an adhesive substance to the plurality of longitudinally-oriented struts to define a distal hub adjacent a distal end of the expandable frame,
further comprising a radiopaque centering rod fixedly attached to the constrainment member and configured to displace the plurality of longitudinally-oriented struts into slots formed by the plurality of internal teeth.

8. The vascular occlusion device of claim 7 , wherein the constrainment member has a fixed outer diameter less than the outer diameter of the series of adjacent rows of cells in the expanded configuration.

9. The vascular occlusion device of claim 7 , wherein the expandable frame is biased toward the expanded configuration.

10. The vascular occlusion device of claim 7 , wherein the expandable frame includes a shape memory material.

11. A vascular occlusion device, comprising:
an expandable frame cut from a tubular member, the expandable frame including:
a first hub integrally formed with the expandable frame adjacent a first end of the expandable frame, and
a plurality of longitudinally-oriented struts extending in a direction opposite the first end;

a constrainment member formed using additive manufacturing technology, the constrainment member being fixedly secured to the plurality of longitudinally-oriented struts to define a second hub adjacent a second end of the expandable frame,
wherein the constrainment member includes a plurality of internal teeth open to a central passage; and
a centering rod disposed within the central passage,
wherein the centering rod urges the plurality of longitudinally-oriented struts into longitudinally-oriented slots defined by the plurality of internal teeth.

Assignees

• Boston Scient Scimed Inc

Inventors

• Cooper Kelsey Rae
• Roth Reggie
• Ryan Liam
• Hannon Robert
• English James Michael

Classifications

• A61B17/12109 Primary

  in a blood vessel · CPC title

• B22F10/12

  by photopolymerisation, e.g. stereolithography [SLA] or digital light processing [DLP] · CPC title

• B22F10/25

  Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS] · CPC title

• B22F10/20

  Direct sintering or melting · CPC title

• B22F10/10

  Formation of a green body · CPC title