# US 10,500,075 B2 · Stent

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- Number: US 10,500,075 B2
- Document ID: US10500075B2
- Status: Granted
- Kind: B2
- Application number: 15/436,634
- Filed: 2017-02-17
- Published: 2017-06-08
- Granted: 2019-12-10
- Earliest claimed: 2006-11-10
- Assignees: C. R. Bard, Inc.
- Applicants: C. R. Bard, Inc.
- Inventors: Thilo Wack; Thomas Haas
- Web page: https://patentgrep.com/patent/US10500075B2

## CPC

- 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
- A61F 2/89: the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
- A61F 2/915: with bands having a meander structure, adjacent bands being connected to each other
- B23K 26/38: by boring or cutting
- B23K 26/402: involving non-metallic material, e.g. isolators
- A61F 2002/91541: {Adjacent bands are arranged out of phase}
- A61F 2002/91558: {connected peak to peak}
- A61F 2230/0054: V-shaped
- A61F 2230/0069: cylindrical
- A61F 2240/001: Designing or manufacturing processes
- A61F 2240/002: Designing or making customized prostheses
- A61F 2250/0036: differing in thickness
- A61F 2250/0039: differing in diameter
- B23K 2103/42: {Plastics other than composite materials}
- 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)
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM

## Abstract

A radially expansible annular stent is disclosed. The stent comprises a plurality of stenting turns around a lumen centered on a longitudinal axis. Adjacent turns of the stent are joined by connector struts. The stent annulus has a wall thickness related to the material from which it is formed. The radial thickness of the connector struts is smaller than that of the stent annulus. A method of making such a stent is also disclosed. The method includes cutting the connector struts from a tubular workpiece with a laser beam. The laser beam is aimed so as to be offset from a longitudinal axis of the workpiece to provide the reduced radial thickness of the connector struts.

## Claims

### Claim 1

A method of making a stent having a plurality of turns around a longitudinal axis comprising:
cutting a tubular workpiece with a beam to form a connector strut having a thickness less than a wall thickness of the tubular workpiece, wherein:
the beam does not intersect the longitudinal axis,
a first turn portion immediately adjacent to the connector strut has a thickness less than the wall thickness of the tubular workpiece,
a second turn portion has a thickness greater than the first turn portion,
the connector strut comprises cut surfaces that intersect to form a luminal angle at a luminal point further from the longitudinal axis than a luminal workpiece surface,
the connector strut comprises cut surfaces that intersect to form an abluminal angle at an abluminal point closer to the longitudinal axis than an abluminal workpiece surface, and
a transverse connector strut cross-section does not have a mirror symmetry plane containing the longitudinal axis.

### Claim 2 (depends on 1)

The method of claim 1, further comprising cutting the tubular workpiece with the beam to form a turn comprising two or more stenting struts, wherein the beam intersects the longitudinal axis.

### Claim 3 (depends on 1)

The method of claim 1, wherein the connector strut joins adjacent turn portions.

### Claim 4 (depends on 1)

The method of claim 1, wherein an inflection point is disposed between at least two stenting struts.

### Claim 5 (depends on 1)

The method of claim 1, wherein a plane that extends through the luminal point and the abluminal point is parallel to the longitudinal axis.