# US 11,998,463 B2 · Endoluminal device

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- Number: US 11,998,463 B2
- Document ID: US11998463B2
- Status: Granted
- Kind: B2
- Application number: 17/386,084
- Filed: 2021-07-27
- Published: 2021-11-18
- Granted: 2024-06-04
- Earliest claimed: 2013-11-08
- Assignees: Boston Scientific Scimed, Inc.
- Applicants: Boston Scientific Scimed, Inc.
- Inventors: Kevin Walsh; Gary Trendel
- Web page: https://patentgrep.com/patent/US11998463B2

## CPC

- A61F 2/90: characterised by a net-like or mesh-like structure
- A61F 2/04: Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts (A61F2/18, A61F2/20 take precedence; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95)
- A61F 2/86: Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- D04C 1/06: Braid or lace serving particular purposes
- A61F 2/885: {comprising a coil including a plurality of spiral or helical sections with alternate directions around a central axis}
- A61F 2002/041: {Bile ducts}
- A61F 2002/044: {Oesophagi or esophagi or gullets}
- A61F 2002/045: {Stomach, intestines}
- A61F 2002/821: {Ostial stents}
- A61F 2210/0014: using shape memory or superelastic materials, e.g. nitinol
- A61F 2230/0091: helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
- A61F 2250/0018: differing in elasticity, stiffness or compressibility
- A61F 2250/0029: differing in bending or flexure capacity
- A61F 2250/0039: differing in diameter
- A61F 2250/0098: radio-opaque, e.g. radio-opaque markers
- D10B 2509/06: Vascular grafts; stents
- 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)
- D04C: BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE (machines for making soles from strips of material A43D29/00; cane working B27J1/00)
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES

## Abstract

The present invention relates to an endoluminal device for implantation in a body lumen, such as a pancreatic duct. The device is provided with a distal end region having greater flexibility than that of a medial region of the device.

## Claims

### Claim 1

An endoluminal device comprising:
a stent having a proximal end region and a distal end region and a longitudinal axis extending therebetween, the stent formed from a plurality of wires; and
wherein the distal end region includes a plurality of loops formed by the plurality of wires, each loop being formed by an end region of a first wire of the plurality of wires connected to an end region of a second wire of the plurality of wires at a joining region, each loop having only one joining region, each loop overlapping only two circumferentially adjacent loops;
wherein each loop has straight side portions extending substantially parallel to the longitudinal axis.

### Claim 2 (depends on 1)

The endoluminal device of claim 1, wherein there is no contact between the straight side portions of circumferentially adjacent loops.

### Claim 3 (depends on 1)

The endoluminal device of claim 1, wherein the joining region of each loop is proximal of a distal terminal end of the loop and distal of the straight side portions.

### Claim 4 (depends on 3)

The endoluminal device of claim 3, wherein the first wire and the second wire of each loop cross over each other at a cross-over point defining a proximal end of the loop.

### Claim 5 (depends on 4)

The endoluminal device of claim 4, wherein the stent includes a medial region extending between the proximal end region and the distal end region, wherein the plurality of wires defines a braid pattern in the medial region, wherein the first wire extends from the braid pattern and across the cross-over point in a first helical direction, wherein the end region of the first wire extends in the first helical direction in the joining region.

### Claim 6 (depends on 5)

The endoluminal device of claim 5, wherein the second wire of the plurality of wires extends from the braid pattern and across the cross-over point in a second helical direction opposite the first helical direction.

### Claim 7 (depends on 6)

The endoluminal device of claim 6, wherein after the cross-over point the first wire transitions into the straight side portion of one of the plurality of loops, then transition into the second helical direction distal of the straight side portion, and then transition at a distal opening of the stent into the first helical direction as it extends into the joining region.

### Claim 8 (depends on 6)

The endoluminal device of claim 6, wherein the braid pattern in the medial region includes the plurality of wires interwoven at a medial braid angle, wherein the distal end region includes the plurality of wires crossing one another at a distal braid angle less than the medial braid angle.

### Claim 9 (depends on 8)

The endoluminal device of claim 8, wherein the medial braid angle is between 95 degrees and 115 degrees.

### Claim 10 (depends on 5)

The endoluminal device of claim 5, wherein the proximal end region is flared outward relative to the medial region and includes a second plurality of loops formed by the plurality of wires.

### Claim 11 (depends on 10)

The endoluminal device of claim 10, wherein one of the second plurality of loops forms a retrieval loop from one of the plurality of wires.

### Claim 12 (depends on 1)

The endoluminal device of claim 1, wherein the joining region of each loop includes only the first and the second wires.

### Claim 13

An endoluminal device comprising:
a stent having a proximal end region, a medial region, a distal end region, and a longitudinal axis extending between the proximal end region and the distal end region, the stent formed from a plurality of wires;
wherein the distal end region includes a plurality of loops formed by the plurality of wires, each loop overlapping only two circumferentially adjacent loops, each loop defined by a proximal cross-over point of a first wire and a second wire, straight side portions of the first and second wires, a distal end bend of the first wire, and a joining region joining end regions of the first and the second wires; and
wherein the straight side portions of the first and second wires extend substantially parallel to the longitudinal axis, wherein there is no contact between the straight side portions of circumferentially adjacent loops.

### Claim 14 (depends on 13)

The endoluminal device of claim 13, wherein a wire forming each of the loops in the distal end region crosses over and/or under two other loops of the plurality of loops in the distal end region.

### Claim 15 (depends on 13)

The endoluminal device of claim 13, wherein at the proximal cross-over point, the first wire extends in a first helical direction and the second wire extends in a second helical direction opposite to the first helical direction.

### Claim 16 (depends on 13)

The endoluminal device of claim 13, wherein the medial region includes a braid pattern including the plurality of wires interwoven at a medial braid angle, wherein the distal end region includes the plurality of wires crossing one another at a distal braid angle less than the medial braid angle.

### Claim 17 (depends on 13)

The endoluminal device of claim 13, wherein each joining region includes only the first and the second wires.

### Claim 18

An endoluminal device comprising:
a stent having a proximal end region, a medial region, a distal end region, and a longitudinal axis extending between the proximal and the distal end regions, the stent formed from a plurality of wires;
wherein the distal end region includes a plurality of loops formed by the plurality of wires, each loop overlapping only two circumferentially adjacent loops, each loop defined by only two wires forming a proximal cross-over point where a first wire extending in a first helical direction crosses over a second wire extending in a second helical direction different from the first helical direction, straight side portions of the first and second wires positioned distal of the proximal cross-over point, and a joining region joining end regions of only the first and the second wires.

### Claim 19 (depends on 18)

The endoluminal device of claim 18, wherein there is no contact between the straight side portions of circumferentially adjacent loops.