Uniformly expandable stent

• US 10,588,765 B2
• Filed: 06/29/2015
• Issued: 03/17/2020
• Est. Priority Date: 05/14/2012
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Chanduszko, Andrzej J.
• Primary Examiner(s): Louis, Richard G
• Application Number:
  US14/754,614
• Publication Number:
  US 20150297376A1
• Time in Patent Office: 1,723 Days
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/072 Encapsulated stents, e.g. wire or whole stent embedded in lining
• CPC Class Codes: A61F 2002/825 having longitudinal struts
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2250/0036 differing in thickness
• CPC Class Codes: F04C 2270/041 Controlled or regulated

Abstract

An intraluminal prosthesis includes a stent architecture having a series of stent elements repeating along a circumferential axis. One series of stent elements includes v-shaped stent elements having at least four different orientations, and V-shaped stent elements connecting adjacent v-shaped stent elements. One series of stent elements includes R-shaped stent elements having at least four different orientations, and U-shaped stent elements having at least two different orientations, the U-shaped stent elements connecting adjacent R-shaped stent elements. Adjacent series of stent elements can be connected by connectors. Portions of the stent elements may narrow in width along a length thereof. The stent architecture may include radiopaque element receiving members. The stent architecture may be formed by machining a metal or polymer tube. The intraluminal prosthesis may include one or more graft layers.

Claims

1. An intraluminal prosthesis, comprising:

a stent architecture comprising;

a plurality of stent cells defined by connected stent rings, each stent ring comprising;

a series of stent elements repeating along a circumferential axis, including;

R-shaped stent elements having at least four different orientations with respect to the circumferential axis, the R-shaped stent elements having at least a first straight portion, and U-shaped stent elements having at least two different orientations, the U-shaped stent elements connecting adjacent R-shaped stent elements such that the first straight portion of each of the R-shaped stent elements is connected to a U-shaped stent element, the first straight portion of each of the R-shaped stent elements narrowing in width toward the U-shaped stent element.

2. The intraluminal prosthesis according to claim 1, wherein the R-shaped stent elements include at least first, second, third and fourth curved radius portions.

3. The intraluminal prosthesis according to claim 1, wherein the plurality of stent cells includes a first stent cell and a second stent cell different from the first stent cell, the first and second stent cells alternating along the circumferential axis.

4. The intraluminal prosthesis according to claim 1, wherein the R-shaped stent elements include:

a first R-shaped stent element in a first orientation,

a second R-shaped stent element in a second orientation different from the first orientation,

a third R-shaped stent element oriented in a third orientation different from the first and second orientations, and

a fourth R-shaped stent element in a fourth orientation different from the first, second, and third orientations.

5. The intraluminal prosthesis according to claim 4, wherein the U-shaped stent elements include a first U-shaped stent element in a first orientation and a second U-shaped stent element oriented in a second orientation different from the first orientation.

6. The intraluminal prosthesis according to claim 5, wherein:

the first R-shaped stent element is connected to the second U-shaped stent element and the second R-shaped stent element,

the second R-shaped stent element is connected to the first R-shaped stent element and the first U-shaped stent element,

the first U-shaped stent element is connected to the second R-shaped stent element and the third R-shaped stent element,

the third R-shaped stent element is connected to the first U-shaped stent element and the fourth R-shaped stent element, and

the fourth R-shaped stent element is connected to the third R-shaped stent element and the second U-shaped stent element.

7. The intraluminal prosthesis according to claim 5, wherein the stent architecture further comprises a plurality of connectors connecting adjacent series of stent elements, the connectors connecting the first U-shaped stent element in a first series of stent elements to the second U-shaped stent element in a second adjacent series of stent elements.

8. The intraluminal prosthesis according to claim 4, wherein the stent architecture further comprises a plurality of connectors connecting adjacent series of stent elements, the connectors connecting the first R-shaped stent element in a first series of stent elements to the third R-shaped stent element in a second adjacent series of stent elements.

9. The intraluminal prosthesis according to claim 8, wherein the connectors further connect the fourth R-shaped stent element in the first series of stent elements to the second R-shaped stent element in the second adjacent series of stent elements.