# US 11,439,402 B2 · Embolization devices and methods of manufacturing the same

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- Number: US 11,439,402 B2
- Document ID: US11439402B2
- Status: Granted
- Kind: B2
- Application number: 17/264,441
- Filed: 2019-04-18
- Published: 2021-08-12
- Granted: 2022-09-13
- Earliest claimed: 2019-04-18
- Assignees: Clearstream Technologies Limited
- Applicants: Clearstream Technologies Limited
- Inventors: Seán Wall; Allan Ronan
- Web page: https://patentgrep.com/patent/US11439402B2

## CPC

- A61B 17/12109: {in a blood vessel}
- A61B 17/1215: {comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated}
- A61B 2017/00526: {Methods of manufacturing}
- A61B 2017/320012: {Brushes}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

There is provided an embolization device for promoting clot formation in a bodily lumen and having a contracted delivery configuration and an expanded deployed configuration, the embolisation device comprising: a stem comprising a tube having a tube wall; and a plurality of flexible bristles extending radially outwardly from the tube, wherein at least one of the plurality of flexible bristles penetrates through the tube wall.

## Claims

### Claim 1

An embolization device for promoting clot formation in a bodily lumen and having a contracted delivery configuration and an expanded deployed configuration, the embolization device comprising:
a stem comprising a tube having a tube wall and a central lumen; and
a plurality of flexible bristles extending radially outwardly from the tube, wherein at least one of the plurality of flexible bristles penetrates through the tube wall and the at least one of the plurality of flexible bristles has a clamped portion within the central lumen,
wherein the tube is formed from a shrinkable material.

### Claim 2 (depends on 1)

The embolization device of claim 1, wherein the shrinkable material is a heat or chemically shrinkable material.

### Claim 3 (depends on 1)

The embolization device of claim 1, wherein the tube is shrunk and wherein the plurality of flexible bristles are each clamped within the central lumen.

### Claim 4 (depends on 3)

The embolization device of claim 3, wherein the tube is shrunk in a radial direction of the tube.

### Claim 5 (depends on 1)

The embolization device of claim 1, wherein the tube is mechanically compressed in a radial direction and wherein the plurality of flexible bristles are each clamped within the central lumen.

### Claim 6

A method of manufacturing an embolization device for promoting clot formation in a lumen having a contracted delivery configuration and an expanded deployed configuration, the method comprising:
providing a stem comprising a tube having a tube wall; and
providing a plurality of flexible bristles such that they extend radially outwardly from the tube,
wherein at least one of the plurality of flexible bristles penetrates through the tube wall; further comprising shrinking or mechanically compressing the tube such that a portion of the at least one of the plurality of flexible bristles is clamped between two opposing sides of the tube wall.

### Claim 7 (depends on 6)

The method of claim 6, wherein the tube is shrunk or compressed in a radial direction of the tube.

### Claim 8 (depends on 6)

The method of claim 6, wherein the tube is mechanically compressed in a radial direction such that a portion of the at least one of the plurality of flexible bristles is clamped between two opposing sides of the tube wall, and, optionally, wherein the tube is mechanically compressed by crimping.