# US 10,524,824 B2 · Active obstruction crossing device

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- Number: US 10,524,824 B2
- Document ID: US10524824B2
- Status: Granted
- Kind: B2
- Application number: 15/110,746
- Filed: 2015-01-08
- Published: 2016-11-17
- Granted: 2020-01-07
- Earliest claimed: 2014-01-12
- Assignees: Upstream Peripheral Technologies Ltd.
- Applicants: Upstream Peripheral Technologies Ltd.
- Inventors: Dan Rottenberg; Yosi Pesis
- Web page: https://patentgrep.com/patent/US10524824B2

## CPC

- A61B 17/3207: Atherectomy devices {working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions (A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016)}
- 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
- A61B 2017/22094: {for crossing total occlusions, i.e. piercing}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Devices and methods are described for penetrating hard plaque that partially or completely occludes blood vessels and disturbs blood flow through the blood vessel. The device includes a distal pre-loaded spring that can store energy and release it as impact at the device distal tip, in order to penetrate or break through hard plaque that is blocking blood path in blood vessels.

## Claims

### Claim 1

A crossing device comprising:
a shaft having a distal portion and a proximal portion;
a handle with an activating mechanism attached to said proximal shaft portion; and
an impactor fixedly connected to a tube and positioned at said distal portion, said impactor being biased by a distal biasing device which abuts against a proximal face of said impactor, and said tube being arranged to slide inside said distal portion, wherein said tube is coupled to said activating mechanism, said distal biasing device operative to store energy and release energy as an impact force through said impactor sufficient to penetrate or break through hard plaque in blood vessels;
and wherein fixed connection of said impactor to said tube is independent of any connection of said impactor or said tube with respect to said shaft and wherein said distal biasing device is external to said impactor, and wherein said tube is coupled to said activating mechanism with a cord and said cord is attached to a rotating member arranged to rotate around a pivot.

### Claim 2 (depends on 1)

The crossing device according to claim 1, further comprising a stopper at said distal portion arranged to limit backwards movement of said distal biasing device.

### Claim 3 (depends on 1)

The crossing device according to claim 1, wherein said distal portion includes a bulge or step that limits forward movement of said impactor.

### Claim 4 (depends on 1)

The crossing device according to claim 1, wherein said distal biasing device is pre-loaded by said impactor.

### Claim 5 (depends on 1)

The crossing device according to claim 1, further comprising a flexible tube having a lumen suitable for a guidewire to pass through, said flexible tube extending through said handle and said shaft.

### Claim 6 (depends on 1)

The crossing device according to claim 1, wherein a biasing device is operative to apply a biasing force that works against pivoting of said rotating member and against pulling of said cord.

### Claim 7 (depends on 1)

The crossing device according to claim 1, wherein said rotating member is rotated by said activating mechanism.

### Claim 8 (depends on 1)

The crossing device according to claim 1, wherein said handle comprises a luer port in communication with a guidewire tube.

### Claim 9 (depends on 1)

The crossing device according to claim 1, further comprising an additional pulling spring positioned between said cord and said rotating member.

### Claim 10 (depends on 1)

The crossing device according to claim 1, further comprising a centering balloon positioned proximally to a distal tip of the device.