# US 11,304,712 B2 · Endovascular device engagement

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 11,304,712 B2
- Document ID: US11304712B2
- Status: Granted
- Kind: B2
- Application number: 16/051,049
- Filed: 2018-07-31
- Published: 2018-11-22
- Granted: 2022-04-19
- Earliest claimed: 2013-09-13
- Assignees: Covidien LP
- Applicants: Covidien LP
- Inventors: James A. Davidson
- Web page: https://patentgrep.com/patent/US11304712B2

## 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
- A61B 17/221: Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)}
- A61F 2/01: Filters implantable into blood vessels
- A61B 2017/00867: {shape memory effect}
- A61B 2017/00893: {pharmaceutically effective}
- A61B 2017/22034: {for gripping the obstruction or the tissue part from inside}
- A61B 2017/2215: {having an open distal end}
- A61B 2090/3966: {Radiopaque markers visible in an X-ray image}
- A61F 2/011: {Instruments for their placement or removal}
- A61F 2002/016: {made from wire-like elements}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

A medical device, configured to perform an endovascular therapy, e.g., thrombectomy, can comprise an elongate manipulation member and an intervention member. The intervention member can comprise a proximal end portion and a mesh. The proximal end portion can be coupled with the distal end portion of the elongate manipulation member. The mesh can have a plurality of cells and, be compressible to a collapsed configuration for delivery to an endovascular treatment site through a catheter, and be self-expandable from the collapsed configuration to an expanded configuration. At least a portion of the mesh, from a first location to a second location along the mesh, can be configured such that an amount of cell deformation in response to longitudinally directed tensile forces decreases by less than 5% or increases in a distal direction along the portion of the mesh.

## Claims

### Claim 1

A medical device configured to perform an endovascular therapy, the device comprising:
an elongate manipulation member comprising a distal end portion; and
an intervention member comprising a proximal end portion and a plurality of sinuous members, the sinuous members connected to form a mesh, the proximal end portion being coupled with the distal end portion of the elongate manipulation member, the mesh having a proximal mesh end, a distal mesh end, a first lateral edge extending between the proximal mesh end and the distal mesh end, a second lateral edge opposite the first lateral edge, the second lateral edge extending between the proximal mesh end and the distal mesh end, and a mesh length from the proximal end to the distal end, the first and second lateral edges being overlapped in a coiled configuration about a longitudinal axis when the mesh is in a collapsed configuration, the mesh being compressible to the collapsed configuration for delivery to an endovascular treatment site through a catheter and being self-expandable from the collapsed configuration to an expanded configuration, the mesh forming a generally cylindrical structure in the expanded configuration in the absence of external forces, each sinuous member comprising a plurality of oscillations including alternating upward apices and downward apices, and wherein, from a first location to a second location along the mesh, an amplitude of the oscillations of each sinuous member increases in a distal direction when the mesh is in an unrolled state such that a first reference line passing through at least three adjacent upward apices of the respective sinuous member diverges distally from a second reference line passing through at least three adjacent downward apices of the respective sinuous member, the first and second locations being longitudinally separated by a distance that is more than half of the mesh length.

### Claim 2 (depends on 1)

The medical device of claim 1, wherein the amplitude of the oscillations increases distally at a constant rate per unit length.

### Claim 3 (depends on 1)

The medical device of claim 1, wherein the frequency of the oscillations increases distally.

### Claim 4 (depends on 1)

The medical device of claim 1, wherein the first and second locations are longitudinally separated by a distance that is at least two thirds of the mesh length.

### Claim 5 (depends on 1)

The medical device of claim 1, wherein the first and second locations are longitudinally separated by a distance that is at least three quarters of the mesh length.

### Claim 6 (depends on 1)

The medical device of claim 1, wherein the sinuous members are connected to each other to form a plurality of cells.

### Claim 7 (depends on 6)

The medical device of claim 6, wherein the plurality of cells are arranged in longitudinal rows.

### Claim 8 (depends on 1)

The medical device of claim 1, wherein when the mesh is in the unrolled state, the proximal mesh end is narrower than the distal mesh end.

### Claim 9 (depends on 1)

The medical device of claim 1, wherein when the mesh is in the unrolled state, the first lateral edge of the mesh diverges from the second lateral edge of the mesh along a distal direction.

### Claim 10

A medical device configured to perform an endovascular therapy, the device comprising:
an elongate manipulation member comprising a distal end portion; and
an intervention member comprising a proximal end portion and a plurality of struts forming a mesh, the proximal end portion being coupled with the distal end portion of the elongate manipulation member, the mesh comprising a plurality of generally longitudinally arranged rows of cells and having a proximal mesh end, a distal mesh end, a first lateral edge extending between the proximal mesh end and the distal mesh end, a second lateral edge opposite the first lateral edge, the second lateral edge extending between the proximal mesh end and the distal mesh end, and a mesh length from the proximal end to the distal end, the first and second lateral edges being overlapped in a coiled configuration about a longitudinal axis when the mesh is in a collapsed configuration, the mesh being compressible to the collapsed configuration for delivery to an endovascular treatment site through a catheter and being self-expandable from the collapsed configuration to an expanded configuration, the mesh forming a generally cylindrical structure in the expanded configuration in the absence of external forces, the mesh defining a reference line for each row of at least three cells, each reference line passing through all intersections of adjacent cells in the corresponding row, and adjacent references lines diverging distally when the mesh is in an unrolled state.

### Claim 11 (depends on 10)

The medical device of claim 10, wherein a first location along the mesh and a second location along the mesh are longitudinally separated by a distance that is more than half of the mesh length, and wherein, between the first and second locations, all of the reference lines continuously diverge from each adjacent reference line.

### Claim 12 (depends on 10)

The medical device of claim 10, wherein at least one reference line is straight.

### Claim 13 (depends on 10)

The medical device of claim 10, wherein all of the reference lines are straight.

### Claim 14 (depends on 10)

The medical device of claim 10, wherein each row extends from a first location to a second location along the mesh, the first and second locations being longitudinally separated by a distance that is more than half of the mesh length.

### Claim 15 (depends on 14)

The medical device of claim 14, wherein the first and second locations are longitudinally separated by a distance that is at least two thirds of the mesh length.

### Claim 16 (depends on 14)

The medical device of claim 14, wherein the first and second locations are longitudinally separated by a distance that is at least three quarters of the mesh length.

### Claim 17 (depends on 10)

The medical device of claim 10, wherein the mesh includes a plurality of undulating members forming the plurality of longitudinally arranged rows of cells.

### Claim 18 (depends on 17)

The medical device of claim 17, wherein the undulating members are connected to each other at the intersections of the cells.

### Claim 19 (depends on 10)

The medical device of claim 10, wherein when the mesh is in the unrolled state, the proximal mesh end is narrower than the distal mesh end.

### Claim 20 (depends on 10)

The medical device of claim 10, wherein when the mesh is in the unrolled state, the first lateral edge of the mesh diverges from the second lateral edge of the mesh along a distal direction.