Expanding vascular stent

• US 8,882,824 B2
• Filed: 04/20/2010
• Issued: 11/11/2014
• Est. Priority Date: 04/20/2010
• Status: Active Grant

• Current Assignee: CG Bio Co., Ltd.
• Original Assignee: CG Bio Co., Ltd.
• Inventors: Kim, Sang-Ho, Kim, Eun-Jin, Park, Jong-Chae, Shin, Il-Gyun, Kim, Dong-Gon, Kim, Han-Ki
• Primary Examiner(s): STEWART, ALVIN J
• Application Number:
  US12/922,676
• Publication Number:
  US 20110257727A1
• Time in Patent Office: 1,666 Days
• Field of Search: 623 115- 116, 623/1.12, 623 118- 121
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped

Abstract

An expanding vascular stent is disclosed that is inserted into a blood vessel in the human body and expands the blood vessel. The stent is configured in such a way that adjacent rows, each of which is comprised of a plurality of identical cells, are symmetrically arranged, in an out of phase manner. When the stent is expanded in the radial direction, the adjacent rows are expanded in opposite directions, maintaining their linearly symmetrical state. Therefore, the reduction in the length of the stent can be minimized. Since the stent has also a great degree of flexibility, when it is inserted into the blood vessel, it can minimize the damage to the blood vessel wall.

Claims

1. An expanding vascular stent comprising:

a body that is hollow in the lengthwise direction, including a plurality of cells joined together,

wherein each of the plurality of cells includes at least two or more parts whose body is curved numerous times and whose one side is opened, in which both ends of the parts are extended with a curved portion, the curved portions being curved in the same direction; and

wherein each of the plurality of cells comprises;

a first part having a plurality of curved portions, the first part being symmetrically formed with respect to a virtual axis that extends along the lengthwise direction of the stent, and open on one side;

a second part having a plurality of curved portions, wherein the second part is joined to the first part, one end of the second part is symmetrically formed to the other end of the second part with respect to the virtual axis located through a center of the second part that extends along the lengthwise direction of the stent, and the second part is open on one side; and

a third part symmetrically formed to the first part, the third part is a mirror image of the first part around the virtual axis located through the center of the second part, the third part being joined to the second part;

wherein the second part of the cell comprises a first unit having at least four curved portions, located at a first side of the second part, and a second unit at a second side of the second part, in which the first unit is symmetrically joined to the second unit with respect to the virtual axis through the center of the second part that extends along the lengthwise direction of the stent.

2. An expanding vascular stent comprising:

a body that is hollow in the lengthwise direction, wherein;

the body includes a plurality of rows connected to each other via a plurality of links, each row including a plurality of cells joined together; and

the adjacent rows are located in such a way that the plurality of cells in one row are symmetrically formed to the plurality of cells in another row, in an out of phase array; and

wherein the links connecting a first row to a second row that is adjacent to the first row are;

parallel to each other;

parallel to straight portions on the cells of the first row, parallel to straight portions on cells of the second row, and parallel to straight portions on cells of a third row, the third row being adjacent to the second row; and

perpendicular to the links connecting the second row to the third row;

wherein each of the plurality of cells comprises;

a first part having a plurality of curved portions, the first part being symmetrically formed with respect to a virtual axis that extends along the lengthwise direction of the stent, and open on one side;

a second part having a plurality of curved portions, wherein the second part is joined to the first part, one end of the second part is symmetrically formed to the other end of the second part with respect to the virtual axis located through a center of the second part that that extends along the lengthwise direction of the stent, and the second part is open on one side; and

a third part symmetrically formed to the first part, the third part is a mirror image of the first part around the virtual axis located through the center of the second part, the third part being joined to the second part;

wherein the second part of the cell comprises a first unit having at least four curved portions, located at a first side of the second part, and a second unit at a second side of the second part, in which the first unit is symmetrically joined to the second unit with respect to the virtual axis through the center of the second part that extends along the lengthwise direction of the stent.

3. An expanding vascular stent comprising:

a body that is hollow in the lengthwise direction, including a plurality of cells joined together,

wherein each of the plurality of cells includes at least two or more parts whose body is curved numerous times and whose one side is opened, in which both ends of the parts are extended with a curved portion, the curved portions being curved in the same direction; and

wherein each of the plurality of cells comprises;

a first part having a plurality of curved portions, the first part being symmetrically formed with respect to a virtual axis that extends along the lengthwise direction of the stent, and open on one side;

a second part having a plurality of curved portions, wherein the second part is joined to the first part, one end of the second part is symmetrically formed to the other end of the second part with respect to the virtual axis located through a center of the second part that extends along the lengthwise direction of the stent, and the second part is open on one side; and

a third part symmetrically formed to the first part, the third part is a mirror image of the first part around the virtual axis located through the center of the second part, the third part being joined to the second part;

wherein the body comprises;

the first row comprised of a plurality of cells joined together;

the second row comprised of a plurality of cells joined together; and

a link connecting the second part in the first row to the second part in the second row; and

wherein each second part comprises;

a first unit having at least four curved portions, located at one side of the second part;

a second unit that is located at the other side of the second part and symmetrically joined to the first unit with respect to the virtual axis through the center of the second part; and

the link connects the second unit of the second part in the first row to the first unit of the second part in the second row.

4. An expanding vascular stent comprising:

a body that is hollow in the lengthwise direction, wherein;

the body includes a plurality of rows connected to each other via a plurality of links, each row including a plurality of cells joined together; and

the adjacent rows are located in such a way that the plurality of cells in one row are symmetrically formed to the plurality of cells in another tow, in an out of phase array; and

wherein the links connecting a first row to a second row that is adjacent to the first row are;

parallel to each other;

parallel to straight portions on the cells of the first row, parallel to straight portions on cells of the second row, and parallel to straight portions on cells of a third row, the third row being adjacent to the second row; and

perpendicular to the links connecting the second row to the third row;

wherein each of the plurality of cells comprises;

a first part having a plurality of curved portions, the first part being symmetrically formed with respect to a virtual axis that extends along the lengthwise direction of the stent, and open on one side;

a second part having a plurality of curved portions, wherein the second part is joined to the first part, one end of the second part is symmetrically formed to the other end of the second part with respect to the virtual axis located through a center of the second part that that extends along the lengthwise direction of the stent, and the second part is open on one side; and

a third part symmetrically formed to the first part, the third part is a mirror image of the first part around the virtual axis located through the center of the second part, the third part being joined to the second part;

wherein the body comprises;

the first row comprised of a plurality of cells joined together;

the second row comprised of a plurality of cells joined together; and

a link connecting the second part in the first row to the second part in the second row; and

wherein each second part comprises;

a first unit having at least four curved portions, located at one side of the second part;

a second unit that is located at the other side of the second part and symmetrically joined to the first unit with respect to the virtual axis through the center of the second part; and

the link connects the second unit of the second part in the first row to the first unit of the second part in the second row.

5. An expanding vascular stent comprising:

a body that is hollow in the lengthwise direction,

wherein;

the body includes a plurality of rows connected to each other via a plurality of links, each row including a plurality of cells joined together; and

the adjacent rows are located in such a way that the plurality of cells in one row are symmetrically formed to the plurality of cells in another row, in an out of phase array; and

wherein the links connecting a first row to a second row that is adjacent to the first row are;

parallel to each other;

parallel to straight portions on the cells of the first row, parallel to straight portions on cells of the second row, and parallel to straight portions on cells of a third row, the third row being adjacent to the second row; and

perpendicular to the links connecting the second row to the third row;

wherein the body comprises;

the first row having a plurality of cells joined together;

the second row having a plurality of cells joined together;

the third row having a plurality of cells joined together;

a first link connecting a first part in the first row to a third part in the second row;

a second link connecting a second part in the first row to another second part in the second row; and

the first link and the second link are out of phase.