# US 10,245,412 B2 · Catheter

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- Number: US 10,245,412 B2
- Document ID: US10245412B2
- Status: Granted
- Kind: B2
- Application number: 15/140,646
- Filed: 2016-04-28
- Published: 2017-04-27
- Granted: 2019-04-02
- Earliest claimed: 2015-10-27
- Assignees: Asahi Intecc Co., Ltd.
- Applicants: Asahi Intecc Co., Ltd.
- Inventors: Hirotomo Shimizu; Masatomo Ishikawa
- Web page: https://patentgrep.com/patent/US10245412B2

## CPC

- A61M 25/0052: {Localized reinforcement, e.g. where only a specific part of the catheter is reinforced, for rapid exchange guidewire port}
- A61M 25/005: {with embedded materials for reinforcement, e.g. wires, coils, braids}
- A61M 25/008: {Strength or flexibility characteristics of the catheter tip}
- A61M 2025/0047: {the inner layer having a higher lubricity}
- 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 catheter includes a catheter body having a lumen and a resin front end tip having a lumen that is in communication with the lumen of the catheter body and that is attached to the front/distal end of the catheter body. The catheter body and front end tip further include a coil body and/or a braid such that the coil body and/or braid are arranged along the lumen. Additionally, the catheter further includes a reinforcement body covering the coil body and/or the braid in the front end tip.

## Claims

### Claim 1

A catheter comprising:
a catheter body having a distal end and a proximal end and forming a lumen,
a resin front end tip having a lumen in communication with the lumen of the catheter body, the front end tip being attached to the distal end of the catheter body,
a wound body disposed in the catheter body and in the front end tip such that the wound body extends along the lumen of the catheter body, the wound body being a coil and/or a braid, and
a resin reinforcement body disposed at least partly within the front end tip, the resin reinforcement body radially covering the wound body such that the wound body is embedded in the resin reinforcement body, and the resin reinforcement body including a plurality of protrusions extending toward an outer periphery of the front end tip.

### Claim 2 (depends on 1)

The catheter according to claim 1, wherein the resin reinforcement body has a diameter larger than a diameter of the wound body.

### Claim 3 (depends on 2)

The catheter according to claim 2, wherein the resin reinforcement body, including the plurality of protrusions, spans the catheter body and the front end tip such that the resin reinforcement body is disposed on both the catheter body and the front end tip.

### Claim 4 (depends on 2)

The catheter according to claim 2, wherein the resin reinforcement body is integrally formed with the catheter body.

### Claim 5 (depends on 2)

The catheter according to claim 2, wherein an entirety of the resin reinforcement body is disposed entirely within the front end tip.

### Claim 6 (depends on 2)

The catheter according to claim 2, further comprising an inner resin layer, wherein the wound body and the resin reinforcement body are disposed radially outward of the inner resin layer.

### Claim 7 (depends on 1)

The catheter according to claim 1, wherein the resin reinforcement body, including the plurality of protrusions, spans the catheter body and the front end tip such that the resin reinforcement body is disposed on both the catheter body and the front end tip.

### Claim 8 (depends on 1)

The catheter according to claim 1, wherein the resin reinforcement body is integrally formed with the catheter body.

### Claim 9 (depends on 1)

The catheter according to claim 1, wherein an entirety of the resin reinforcement body is disposed entirely within the front end tip.

### Claim 10 (depends on 1)

The catheter according to claim 1, further comprising an inner resin layer, wherein the wound body and the resin reinforcement body are disposed radially outward of the inner resin layer.