# US 2016/0256299 A1 · Bend-Capable Stent Prosthesis

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- Number: US 2016/0256299 A1
- Document ID: US20160256299A1
- Status: Published application
- Kind: A1
- Application number: 15/153,643
- Filed: 2016-05-12
- Published: 2016-09-08
- Earliest claimed: 2006-05-18
- Assignees: C. R. Bard, Inc.
- Applicants: C. R. Bard, Inc.
- Inventors: Thilo Wack
- Web page: https://patentgrep.com/patent/US20160256299A1

## CPC

- A61F 2/89: the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
- A61F 2/844: folded prior to deployment
- A61F 2/90: characterised by a net-like or mesh-like structure
- A61F 2/91: made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes
- A61F 2/915: with bands having a meander structure, adjacent bands being connected to each other
- A61F 2002/825: {having longitudinal struts}
- A61F 2002/91516: {the meander having a change in frequency along the band}
- A61F 2002/91525: {within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude}
- A61F 2002/91541: {Adjacent bands are arranged out of phase}
- A61F 2002/91558: {connected peak to peak}
- A61F 2210/0014: using shape memory or superelastic materials, e.g. nitinol
- A61F 2230/0054: V-shaped
- 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 stent is described, which includes a plurality of stenting rings, each stenting ring including a plurality of struts and points of inflection, each point of inflection connecting adjacent struts, the points of inflection of adjacent stenting rings facing each other along an axis parallel to a longitudinal axis of the stent in a radially expanded stenting disposition while the stent is in an unbent configuration. Adjacent stenting rings are connected by connectors extending from a point of inflection on one stenting ring to a facing point of inflection on another stenting ring, the connectors being linear along an entire length thereof and parallel to the longitudinal axis of the stent, each of the connectors having a length shorter than a length of each of the struts.

## Claims

### Claim 1

A stent, comprising:
a plurality of stenting rings, each stenting ring including a plurality of struts and points of inflection, each point of inflection connecting adjacent struts, the points of inflection of adjacent stenting rings facing each other along an axis parallel to a longitudinal axis of the stent in a radially expanded stenting disposition while the stent is in an unbent configuration;
adjacent stenting rings connected by connectors extending from a point of inflection on one stenting ring to a facing point of inflection on another stent ring, the connectors being linear along an entire length thereof and parallel to the longitudinal axis of the stent, each of the connectors having a length shorter than a length of each of the struts;
each stenting ring including connected points of inflection and unconnected points of inflection, the facing unconnected points of inflection of adjacent stenting rings axially passing by each other when the stent is transitioned from the unbent configuration to a bent configuration.

### Claim 2 (depends on 1)

The stent according to claim 1, wherein the struts of each stenting ring have the same cross-section, the length of each of the struts is greater than 1.25 mm, and the length of each of the connectors is less than 1 mm.

### Claim 3 (depends on 2)

The stent according to claim 2, wherein the struts of each of the stenting rings have equal length, such that each of the points of inflection lie in one of two circles transverse to the longitudinal axis of the stent.

### Claim 4 (depends on 1)

The stent according to claim 1, wherein the number of struts “N” of a stenting ring between circumferentially adjacent connectors is such that N/2 is an even number.

### Claim 5 (depends on 1)

The stent according to claim 1, wherein the number of struts “N” of a stenting ring between circumferentially adjacent connectors is such that N/2 is an odd number and N is more than 10.

### Claim 6 (depends on 1)

The stent according to claim 1, wherein longitudinally adjacent connectors exhibit a helical path coaxial with the longitudinal axis from a first end of the stent to a second opposing end of the stent.

### Claim 7 (depends on 1)

The stent according to claim 1, comprising a shape memory alloy.

### Claim 8 (depends on 1)

The stent according to claim 1, wherein the stent undergoes plastic deformation upon expansion to the radially expanded stenting disposition.

### Claim 9 (depends on 1)

The stent according to claim 1, wherein the length of each of the connectors is not more than 0.8 mm.

### Claim 10 (depends on 1)

The stent according to claim 1, wherein the length of each of the connectors is less than 0.6 mm.

### Claim 11 (depends on 1)

The stent according to claim 1, wherein the length of each of the struts is in a range of from 1.3 mm to 2.20 mm.

### Claim 12 (depends on 1)

The stent according to claim 1, wherein the length of each of the struts is in a range of from 1.4 mm to 2.0 mm.

### Claim 13 (depends on 1)

The stent according to claim 1, wherein each of the stenting rings includes 32 struts.

### Claim 14 (depends on 1)

The stent according to claim 1, wherein adjacent stenting rings are connected by four evenly spaced connectors.