# US 8,771,174 B2 · Endoscope-equipped puncture balloon

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- Number: US 8,771,174 B2
- Document ID: US8771174B2
- Status: Granted
- Kind: B2
- Application number: 10/544,013
- Filed: 2004-01-30
- Published: 2006-10-26
- Granted: 2014-07-08
- Earliest claimed: 2003-01-30
- Assignees: Sumitomo Bakelite Co., Ltd.; Hideto Oishi
- Applicants: Hideto Oishi; Yukihiko Sakaguchi
- Inventors: Hideto Oishi; Yukihiko Sakaguchi
- Web page: https://patentgrep.com/patent/US8771174B2

## CPC

- A61M 25/10: Balloon catheters ({A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02;} inflatable balloons for placing stents or stent-grafts A61F2/958 {; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00})
- A61B 17/3403: {Needle locating or guiding means}
- A61B 17/3421: {Cannulas}
- A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers}
- A61B 17/3494: {with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors (for the peridural space A61B17/3401)}
- A61B 2017/00292: {mounted on or guided by flexible, e.g. catheter-like, means}
- A61B 2017/22068: {Centering}
- A61B 2017/22069: {Immobilising; Stabilising}
- A61B 2017/3486: {Balloon}
- A61B 2090/3925: {ultrasonic}
- 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)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

To provide a tool for safely and reliably securing a route for endermically approaching the interior of the body; more specifically, an endoscope-equipped puncture balloon that is designed to allow a balloon that does not immediately burst when punctured by a puncturing needle or the like to be used as a target, and that can be used by installing or inserting an endoscope in a tube holding such balloon. In a thin-walled main body tube 1 equipped with an endoscope-installed section at the rear end, a balloon 2 is disposed on the front surface thereof, and a branch tube 4 communicating with the interior of the balloon 2 in a gas-liquid flow manner is disposed on the main body tube 1, the branch tube 4 having a connector 5 annexed to the rear end thereof; thus it is not until the liquid in the balloon is absorbed without the balloon immediately bursting when punctured by a puncturing needle that a bore can be secured until the balloon is contracted.

## Claims

### Claim 1

An endoscope-equipped puncture balloon, comprising:
an endoscope,
an inner cylinder including an endoscope-installed section formed on a proximal end of said inner cylinder, an extreme distal end of said endoscope being attached to an inner surface of said endoscope-installed section of said inner cylinder,
a slide cylinder, said slide cylinder being fitted on an outer surface of said inner cylinder and movable in the axial direction of the endoscope relative to said inner cylinder and said endoscope,
a balloon disposed on an outer surface of said slide cylinder on a distal surface of an extreme distal end of said slide cylinder,
a branch tube communicating with the interior of the balloon in a gas-liquid flow manner, and
a connector annexed to a proximal end of said branch tube,
wherein the balloon is formed such that the balloon does not burst when punctured by a needle,
wherein the balloon is formed such that after the balloon is punctured by the needle, a bore of the balloon is maintained until the liquid in the balloon is absorbed and the balloon contracts,
wherein the balloon has a wall thickness of 0.01-1 mm, tensile strength of 8-25 MPa, 100% modulus of 3-6 MPa, elongation of 300-460%, and balloon inside pressure of 2.8-75 psi, and
wherein said inner cylinder and said slide cylinder compose main body tube having a length of 50 mm or less.

### Claim 2 (depends on 1)

An endoscope-equipped puncture balloon according to claim 1, wherein the inner tube and the slide cylinder are transparent.

### Claim 3 (depends on 1)

An endoscope-equipped puncture balloon according to claim 1,
wherein when the slide cylinder is moved to a maximum extension position, a distance from an extreme distal end of the slide cylinder to an extreme proximal end of the endoscope-installed section of said inner cylinder is 10 mm or less, and
wherein a distance from an extreme distal end of the inner cylinder to the extreme proximal end of the endoscope-installed section of said inner cylinder is 10 mm or less.

### Claim 4 (depends on 1)

An endoscope-equipped puncture balloon according to claim 1, wherein at least one of said inner cylinder and the slide cylinder includes a stopper to prevent or suppress the backward movement of the slide cylinder when the slide cylinder is in a minimum extension position.

### Claim 5 (depends on 1)

An endoscope-equipped puncture balloon according to claim 1, wherein said slide cylinder includes a balloon-installed section, said balloon installed section being inside of a lengthwise direction of the balloon.