# US 2026/0273232 A1 · Medical device

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- Number: US 2026/0273232 A1
- Document ID: US20260273232A1
- Status: Published application
- Kind: A1
- Application number: 19/667,981
- Filed: 2026-05-05
- Published: 2026-09-17
- Earliest claimed: 2023-11-10
- Assignees: Asahi Intecc Co., Ltd.
- Applicants: Asahi Intecc Co., Ltd.
- Inventors: Kensei FUKUSHIMA; Makoto NISHIGISHI; Yusuke KIDO
- Web page: https://patentgrep.com/patent/US20260273232A1

## CPC

- A61M 25/09: Guide wires
- A61M 2025/0046: {Coatings for improving slidability}
- A61M 2025/09083: {having a coil around a core}
- A61M 2025/09091: {where a sheath surrounds the coil at the distal part}
- A61M 2025/09108: {Methods for making a guide wire}
- A61M 2025/09133: {having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque}
- A61M 2025/0915: {having features for changing the stiffness}
- A61M 2025/09166: {having radio-opaque features}
- A61M 2025/09175: {having specific characteristics at the distal tip}
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

A medical device includes a distal tip, an outer layer coil, and a coating. The outer layer coil is connected to the distal tip. The coating covers an outer peripheral surface of the distal tip and an outer peripheral surface of the outer layer coil in a region from a distal end of the distal tip to a predetermined axial position. The axial position is located on a distal side relative to a proximal end of the outer layer coil.

## Claims

### Claim 1

A medical device comprising:
a distal tip;
an outer layer coil connected to the distal tip; and
a coating covering an outer peripheral surface of the distal tip and an outer peripheral surface of the outer layer coil in a region from a distal end of the distal tip to a predetermined axial position,
wherein the axial position is located on a distal side relative to a proximal end of the outer layer coil.

### Claim 2 (depends on 1)

The medical device according to claim 1, wherein the coating is made of urethane resin.

### Claim 3 (depends on 1)

The medical device according to claim 1, further comprising:
a core shaft disposed inside the outer layer coil; and
a joining portion joining the core shaft and the outer layer coil, wherein the axial position is located on a proximal side relative to the joining portion.

### Claim 4 (depends on 1)

The medical device according to claim 1, further comprising an inner layer coil connected to the distal tip and disposed inside the outer layer coil,
wherein the axial position is located on a proximal side relative to a proximal end of the inner layer coil.

### Claim 5 (depends on 1)

The medical device according to claim 1, wherein
the coating is a first coating, and
the medical device further comprises a second coating covering an outer circumference of the outer layer coil.

### Claim 6 (depends on 5)

The medical device according to claim 5, wherein the second coating is hydrophilic.

### Claim 7 (depends on 5)

The medical device according to claim 5, wherein the second coating covers the first coating in a region on a distal side relative to the axial position.

### Claim 8 (depends on 7)

The medical device according to claim 7, wherein lubricity in the region from the distal end of the distal tip to the axial position is higher than lubricity in a region from the axial position to the proximal end of the outer layer coil.