# US 11,077,288 B2 · Flushing balloon catheter for observation and removal of clots under vessel bifurcation conditions

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- Number: US 11,077,288 B2
- Document ID: US11077288B2
- Status: Granted
- Kind: B2
- Application number: 16/192,203
- Filed: 2018-11-15
- Published: 2020-05-21
- Granted: 2021-08-03
- Earliest claimed: 2018-11-15
- Assignees: Biosense Webster (Israel) Ltd.
- Applicants: Biosense Webster (Israel) Ltd.
- Inventors: Assaf Govari
- Web page: https://patentgrep.com/patent/US11077288B2

## CPC

- A61B 17/22: Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61M 25/104: {used for angioplasty}
- A61B 1/00082: {Balloons}
- A61B 1/3137: {for examination of the interior of blood vessels}
- A61B 17/22012: {in direct contact with, or very close to, the obstruction or concrement (for removing obstructions in blood vessels by laser A61B18/245)}
- A61B 1/00096: {Optical elements}
- A61B 1/045: Control thereof
- A61B 5/02007: {Evaluating blood vessel condition, e.g. elasticity, compliance}
- A61B 17/1204: {temporary occlusion}
- A61B 17/12136: {Balloons}
- A61B 2017/22051: {with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation (A61B2017/22048, A61B2017/3486 take precedence)}
- A61B 2017/22065: {Functions of balloons}
- A61B 2017/22067: {Blocking; Occlusion (A61B2017/22054 takes precedence)}
- A61B 2017/22079: {with suction of debris}
- A61B 2017/22084: {stone- or thrombus-dissolving}
- A61M 25/1002: {characterised by balloon shape (A61M25/1006, A61M25/1009 take precedence)}
- A61M 2025/1043: {with special features or adapted for special applications}
- A61M 2025/1052: {for temporarily occluding a vessel for isolating a sector}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- 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 shaft, a sealing balloon, a bifurcation sealing element and a camera. The shaft has a distal end for insertion into a clotted blood vessel of a brain of a patient. The sealing balloon, which is fitted at a proximal section of the distal end, is configured to proximally seal a portion of the clotted blood vessel. The bifurcation sealing element is fitted at the distal end, distally to the sealing balloon, and is configured to seal a bifurcation located at the proximally sealed portion of the clotted blood vessel. The camera, which is fitted at a distal edge of the distal end, is configured to visually image a clot that clots the blood vessel.

## Claims

### Claim 1

A catheter, comprising:
a shaft having a distal end for insertion into a clotted blood vessel of a brain of a patient;
a sealing balloon, which is fitted at a proximal section of the distal end, and is configured to proximally seal a portion of the clotted blood vessel;
a bifurcation sealing element, which is fitted at the distal end, distally to the sealing balloon, and is configured to seal a bifurcation located at the proximally sealed portion of the clotted blood vessel, the bifurcation sealing element comprises a movable sealing plate; and
a camera, which is fitted at a distal edge of the distal end and is configured to visually image a clot that clots the blood vessel.

### Claim 2 (depends on 1)

The catheter according to claim 1, wherein the the sealing balloon is configured to press the bifurcation sealing element against the bifurcation.

### Claim 3 (depends on 1)

The catheter according to claim 1, and comprising a working channel that is configured to guide a clot removal device.

### Claim 4 (depends on 1)

The catheter according to claim 1, and comprising a working channel that is configured to flow fluid into the proximally sealed portion.

### Claim 5 (depends on 1)

The catheter according to claim 1, and comprising a working channel that is configured to channel suction sub-pressure into the proximally sealed portion so as to draw the clot.

### Claim 6

A catheterization method, comprising:
inserting a shaft having a distal end into a clotted blood vessel of a brain of a patient;
proximally sealing a portion of the clotted blood vessel using a sealing balloon which is fitted at a proximal section of the distal end;
sealing a bifurcation located at the proximally sealed portion of the clotted blood vessel using a bifurcation sealing element which is fitted at the distal end, distally to the sealing balloon, wherein sealing the bifurcation comprises sealing the bifurcation using a movable sealing plate; and
visually imaging a clot that clots the blood vessel using a camera which is fitted at a distal edge of the distal end.

### Claim 7 (depends on 6)

The method according to claim 6, wherein sealing the bifurcation comprises pressing the bifurcation sealing element against the bifurcation using an inflatable member.

### Claim 8 (depends on 6)

The method according to claim 6, wherein sealing the bifurcation comprises pressing the bifurcation sealing element against the bifurcation using an elastic member.

### Claim 9 (depends on 6)

The method according to claim 6, and comprising guiding a clot removal device through a working channel in the shaft.

### Claim 10 (depends on 6)

The method according to claim 6, and comprising flowing fluid into the proximally sealed portion through a working channel in the shaft.

### Claim 11 (depends on 6)

The method according to claim 6, and comprising channeling suction through a working channel in the shaft, so as to draw the clot.