# US 5,344,400 A · Balloon catheters containing molded polyarylenesulfide material

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- Number: US 5,344,400 A
- Document ID: US5344400A
- Status: Granted
- Kind: A
- Application number: 08/046,262
- Filed: 1993-04-06
- Granted: 1994-09-06
- Earliest claimed: 1992-04-06
- Assignees: Terumo Kabushiki Kaisha
- Inventors: Takashi Kaneko; Toshinobu Ishida; Akira Mochizuki
- Web page: https://patentgrep.com/patent/US5344400A

## CPC

- A61M 25/1029: {Production methods of the balloon members, e.g. blow-moulding, extruding, deposition or by wrapping a plurality of layers of balloon material around a mandril}
- A61L 29/06: obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- A61M 25/1034: {Joining of shaft and balloon}
- A61M 25/1038: {Wrapping or folding devices for use with balloon catheters}
- A61M 2025/1075: {having a balloon composed of several layers, e.g. by coating or embedding}
- 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)}
- 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)

## Abstract

A balloon catheter having a balloon which is produced by molding polyarylenesulfide or an alloy thereof wherein polyarylenesulfide is a main constituent, and the balloon is provided with excellent dimensional stability as well as sufficient softness and flexibility, leading to an improved trackability of the catheter to reach the target lesion.

## Claims

### Claim 1

In a balloon catheter having an inflatable balloon, the improvement comprising: the balloon produced by molding a polyarylenesulfide or an alloy thereof wherein the polyarylenesulfide is a main constituent.

### Claim 2 (depends on 1)

The improvement according to claim 1, wherein said balloon is fabricated by multi-layered extrusion molding using at least two materials selected from the group consisting of polyarylenesulfide, an alloy thereof, olefin polymer, an alloy thereof, and mixtures thereof.

### Claim 3 (depends on 1)

The improvement according to claim 1, wherein said polyarylenesulfide is at least one selected from the group consisting of polyphenylenesulfide, polythioether ketone, polythioether thioether ketone, polythioether ketone ketone, polyether thioether, polythioether sulfone, polybiphenylene sulfide and polynaphthalene sulfide.

### Claim 4 (depends on 1)

The improvement according to claim 1, wherein said polyarylenesulfide is a high molecular weight polyphenylenesulfide.

### Claim 5 (depends on 1)

The improvement according to claim 1, wherein said balloon has a calculated modulus of elasticity of from 70 to 200 kg/mm.sup.2.

### Claim 6 (depends on 1)

The improvement according to claim 1, wherein said balloon has a burst pressure of at least 10 kg/cm.sup.2.

### Claim 7 (depends on 1)

The improvement according to claim 1, wherein said balloon has a film oriented biaxially.