# US 2011/0218616 A1 · Cancer Stent Treatment Device Using Nanotechnology

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- Number: US 2011/0218616 A1
- Document ID: US20110218616A1
- Status: Published application
- Kind: A1
- Application number: 12/978,563
- Filed: 2010-12-26
- Published: 2011-09-08
- Earliest claimed: 2009-12-26
- Assignees: Erwin Dale Thomas
- Inventors: Erwin Dale Thomas
- Web page: https://patentgrep.com/patent/US20110218616A1

## CPC

- A61F 2/82: Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07)
- A61N 5/062: {Photodynamic therapy, i.e. excitation of an agent}
- A61L 31/16: Biologically active materials, e.g. therapeutic substances {(A61L31/047 takes precedence)}
- A61L 2400/12: Nanosized materials, e.g. nanofibres, nanoparticles, nanowires, nanotubes; Nanostructured surfaces
- B82Y 5/00: Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES

## Abstract

This application is for a device using aptamers, multiwalled carbon nanotubes (MWCNTs) filled with nanosized iron oxide particles immobilized magnetically on a stent by a magnet and then subsequently killing circulating tumor cells (CTCs) attached to the aptamers by heating the carbon nanotubes with near infrared (NIR) lasers and then release from the stent by removing the permanent magnet and subsequent excretion of the MWCNTs.

## Claims

### Claim 1

Nanotechnology devices or particles including but not limited to dendrimers, carbon nanotubes, or quantum Dots attached to a stent.

### Claim 2

(canceled)

### Claim 3

(canceled)

### Claim 4

(canceled)

### Claim 5

(canceled)

### Claim 6

(canceled)

### Claim 7

A device or procedure to kill cancer cells, that have been attached to a stent, by heating it.

### Claim 8

(canceled)

### Claim 9

A Cancer treatment device using increased inside stent surface area.

### Claim 10

(canceled)