# US 12,551,314 B2 · Examination marker

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- Number: US 12,551,314 B2
- Document ID: US12551314B2
- Status: Granted
- Kind: B2
- Application number: 17/196,565
- Filed: 2021-03-09
- Published: 2021-06-24
- Granted: 2026-02-17
- Earliest claimed: 2018-09-20
- Assignees: Toppan Printing Co., Ltd.
- Applicants: Toppan Printing Co., Ltd.
- Inventors: Junya Tanabe; Ryohei Tode; Saeko Nomura; Tsukasa Yamazaki; Ryo Shoda; Hiroyoshi Nishiyama
- Web page: https://patentgrep.com/patent/US12551314B2

## CPC

- A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers}
- A61B 5/004: {adapted for image acquisition of a particular organ or body part (A61B5/0082 takes precedence; arrangements for optical scanning A61B5/0062)}
- A61B 5/0507: using microwaves or terahertz waves
- A61B 5/064: {using markers (A61B5/062 takes precedence)}
- A61B 5/4312: {Breast evaluation or disorder diagnosis (optical mammography A61B5/0091)}
- A61B 5/6823: {Trunk, e.g., chest, back, abdomen, hip}
- A61B 5/6833: {Adhesive patches}
- A61B 10/00: Instruments for taking body samples for diagnostic purposes (for taking samples of blood A61B5/15); Other methods or instruments for diagnosis, e.g. for vaccination diagnosis, sex determination or ovulation-period determination; Throat striking implements
- A61F 13/02: Adhesive bandages or dressings
- C09J 7/20: characterised by their carriers
- C09J 7/255: {Polyesters}
- C09J 7/29: Laminated material (metallised plastics C09J7/22)
- C09J 7/30: characterised by the adhesive composition
- C09J 7/38: Pressure-sensitive adhesives [PSA]
- A61B 2090/3908: {Soft tissue, e.g. breast tissue}
- A61B 2090/3937: {Visible markers}
- A61B 2090/397: {electromagnetic other than visible, e.g. microwave}
- A61B 2090/3991: {having specific anchoring means to fixate the marker to the tissue, e.g. hooks}
- A61B 2560/0412: Low-profile patch shaped housings
- A61B 2562/143: for coupling microwaves
- C09J 2203/334: as a label
- C09J 2301/312: parameters being the characterizing feature
- C09J 2301/416: use of irradiation
- C09J 2467/006: in the substrate
- C09J 2475/00: Presence of polyurethane
- C09J 2475/006: in the substrate
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- 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)
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)

## Abstract

An examination marker is used in diagnostic imaging using microwaves, including a marker body to be adhered to a site to be examined. The marker body is configured to display an index used for scanning of the site to be examined and to deform in accordance with a shape of the site to be examined, and the marker body has a transmittance of 70% or higher to microwaves at a frequency of 2 GHz.

## Claims

### Claim 1

An examination marker for use in diagnostic imaging using microwaves, comprising:
a base film made of a polyurethane resin, the base film having a scan index, and
a gel layer laminated on the base film, wherein
the gel layer is made of an aliphatic hydrocarbon that has a higher transmissivity to microwaves than water does, and has shear viscosity at 30° C. of 5,000 mPa·s or more and 50,000 mPa·s or less,
the base film has a tensile elongation at break of 130% or more, and a tensile strength at 100% elongation of 4 N/cm or less,
the base film has a thickness of 5 μm or more and 15 μm or less; and
the examination marker is configured to adhere to a human breast without wrinkles, while covering the breast entirely.

### Claim 2 (depends on 1)

The examination marker of claim 1, wherein
the polyurethane resin includes at least one selected from the group consisting of ether-based polyurethane resin and ester-based polyurethane resin.