Radiopaque ink formulations containing nanoparticles and uses thereof

Patent metadata

Field	Value
Publication number	US-2024209227-A1
Application number	US-202318392020-A
Country	US
Kind code	A1
Filing date	Dec 21, 2023
Priority date	Dec 23, 2022
Publication date	Jun 27, 2024
Grant date	—

Abstract

In some embodiments, apparatuses and methods are provided herein useful for identifying an object using radiopaque ink. In some embodiments, a system for identifying an object comprises an object having an identifying marking formed of a radiopaque ink comprising a solvent and a plurality of nanoparticles having an average diameter from about 5 nm to about 300 nm suspended in the solvent, each nanoparticle comprising at least 50,000 atoms having an atomic number of 53 or greater. A control circuit causes a radiographic imaging device to irradiate the object, receives from the radiographic imaging device image data associated with the object, processes the image data to generate an x-ray image showing the identifying marking of the object, causes a display device to display the x-ray image showing the identifying marking of the object, and identifies the object based on the identifying marking of the object shown in the x-ray image.

First claim

What is claimed is:

1 . A radiopaque ink composition comprising:
a solvent; and a plurality of nanoparticles having an average diameter from about 5 nm to about 300 nm suspended in the solvent, each nanoparticle comprising at least 50,000 atoms having an atomic number of 53 or greater, wherein the plurality of nanoparticles are present in the solvent in an amount effective to render the ink composition radiopaque.

2 . The radiopaque ink composition of claim 1 , wherein the radiopaque ink composition has a maximum viscosity of 12 centipoise (cP) effective for use in ink printing applications.

3 . A label comprising the radiopaque ink composition of claim 1 printed on a substrate.

4 . A system for identifying an object, the system comprising:
an object having disposed thereon an identifying marking formed of a radiopaque ink composition, the radiopaque ink composition comprising:
a solvent; and
a plurality of nanoparticles having an average diameter from about 5 nm to about 300 nm suspended in the solvent, each nanoparticle comprising at least 50,000 atoms having an atomic number of 53 or greater,
wherein the plurality of nanoparticles are present in the solvent in an amount effective to render the ink composition radiopaque;
a radiographic imaging device configured to irradiate an object with x-ray radiation and detect reflected x-ray radiation; a display device; and a control circuit communicatively coupled to the radiographic imaging device, and the display device via a network, the control circuit configured to:
cause the radiographic imaging device to irradiate the object;
receive, from the radiographic imaging device, image data associated with the object;
process the image data to generate an x-ray image based on detected x-ray radiation, wherein the x-ray image shows the identifying marking of the object;
cause the display device to display the x-ray image showing the identifying marking of the object; and
identify the object based on the identifying marking of the object shown in the x-ray image.

5 . The system of claim 4 , further comprising a plurality of objects arranged in a manner such that an identifying marking of the object is visually obscured by another object.

6 . The system of claim 5 , wherein a radiodensity of the other object is lower than a radiodensity of the radiopaque ink composition.

7 . The system of claim 4 , wherein the object is a medical implant disposed in a subject.

8 . The system of claim 4 , wherein the object is a consumer product, and the radiographic imaging device comprises a handheld device configured to be operated by an associate in a retail facility.

9 . The system of claim 4 , wherein the object is a consumer product in a retail facility, and the radiographic imaging device is associated with a point-of sale terminal or an autonomous robot in the retail facility.

10 . The system of claim 4 , wherein the radiopaque ink composition is disposed directly on at least one of the object or a packaging of the object.

11 . The system of claim 4 , wherein the radiopaque ink composition is disposed on a printed label, which is affixed to at least one of the object or a packaging of the object.

12 . The system of claim 4 , further comprising a database associating objects with respective identifying markings, wherein the control circuit is configured to identify the object by reading the identifying marking of the object in the x-ray image, and querying the database to obtain a match between the identifying marking and the associated object.

13 . A method of identifying an object, the method comprising:
causing, by a control circuit, a radiographic imaging device to irradiate an object with x-ray radiation and detect reflected x-ray radiation, the object having disposed thereon an identifying marking formed of a radiopaque ink composition, the radiopaque ink composition comprising:
a solvent; and
a plurality of nanoparticles having an average diameter from about 5 nm to about 300 nm suspended in the solvent, each nanoparticle comprising at least 50,000 atoms having an atomic number of 53 or greater,
wherein the plurality of nanoparticles are present in the solvent in an amount effective to render the ink composition radiopaque;
receiving, by the control circuit from the radiographic imaging device, image data associated with the object; processing, by the control circuit, the image data to produce an x-ray image, wherein the x-ray image shows the identifying marking of the object; causing, by the control circuit, a display device to display the x-ray image showing the identifying marking of the object; and identifying, by the control circuit, the object based on the identifying marking of the object shown in the x-ray image.

14 . The method of claim 13 , wherein a plurality of objects are arranged in a manner such that an identifying marking of the object is visually obscured by another object.

15 . The method of claim 13 , wherein a radiodensity of the other object is lower than a radiodensity of the radiopaque ink composition.

16 . The method of claim 13 , wherein the object is a medical implant disposed in a subject.

17 . The method of claim 13 , wherein the object is a consumer product, and the radiographic imaging device comprises handheld device configured to be operated by an associate in a retail facility.

18 . The method of claim 13 , wherein the object is a consumer product in a retail facility, and the radiographic imaging device is associated with a point-of sale terminal or an autonomous robot in the retail facility.

19 . The method of claim 13 , wherein the radiopaque ink composition is disposed directly on at least one of the object or a packaging of the object.

20 . The method of claim 13 , wherein the radiopaque ink composition is disposed on a printed label, which is affixed to at least one of the object or a packaging of the object.

Assignees

• Walmart Apollo Llc

Inventors

• Pan Dipanjan
• Dighe Ketan
• Gunaseelan Nivetha
• Moitra Parikshit
• Alafeef Maha Mohammad Shehadeh

Classifications

• C09D11/037

  characterised by the pigment · CPC title

• G06K2007/10524

  Hand-held scanners · CPC title

• C08K7/00

  Use of ingredients characterised by shape · CPC title

• G06K7/1099

  scanning using X-rays · CPC title

• B41M5/0047

  by ink-jet printing · CPC title