Expanding Vascular Stent

• US 20110257727A1
• Filed: 04/20/2010
• Published: 10/20/2011
• Est. Priority Date: 04/20/2010
• Status: Active Grant

• Current Assignee: CG Bio Co., Ltd.
• Original Assignee: Mitech Company Limited
• Inventors: Shin, Il-Gyun, Kim, Eun-Jin, Park, Jong-Chae, Kim, Dong-Gon, Kim, Han-Ki, Kim, Sang-Ho
• Granted Patent: US 8,882,824 B2
• Time in Patent Office: Days
• US Class Current: 623/1.16
• 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, wherein;

the body includes a plurality of rows connected to each other, 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.

3. The expanding vascular stent according to claim 1 or 2, wherein each of the plurality of cells comprises:

a first part having a plurality of curved portions, the first part being symmetrically formed 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, and the second part is open on one side; and

a third part symmetrically formed to the first part, the third part being joined to the second part.

4. The expanding vascular stent according to claim 3, wherein the first cell comprises:

a first unit having at least four curved portions; and

a second unit having at least two curved portions, the second unit being joined to the first unit.

5. The expanding vascular stent according to claim 3, wherein the second cell comprises a unit having at least four curved portions, located at its one side, and another unit at the other side, in which the unit is symmetrically joined to another unit.

7. The expanding vascular stent according to claim 3, wherein the body comprises:

first and second rows each of which is comprised of the plurality of cells joined together; and

links each of which connects a first part of the first row to a third part of the second row.

8. The expanding vascular stent according to claim 7, wherein:

each of the first and third parts comprises;

a first unit having at least four curved portions; and

a second unit having at least two curved portions, the second unit being joined to the first unit; and

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

9. The expanding vascular stent according to claim 3, wherein the body comprises:

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

a 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.

10. The expanding vascular stent according to claim 9, wherein:

the second part comprises;

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

a second unit that is located at the other side of the second part and symmetrically joined to the first unit; 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.

11. The expanding vascular stent according to claim 1, wherein:

the body comprises;

a first row having a plurality of cells joined together;

a second row having a plurality of cells joined together;

a third row having a plurality of cells joined together;

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

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

the first and the second links are out of phase.

2. 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 part are extended with a curved portion, the curved portions being curved in the same direction.

6. The expanding vascular stent according to claim 2, wherein:

the body comprises a plurality of rows each of which is comprised of a plurality of cells joined together; and

the plurality of rows are symmetrical with respect to the lengthwise direction of the rows and out of phase to each other.

12. An expanding vascular stent comprising:

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

wherein;

each of the plurality of cells comprises;

a plurality of first units each of which has at least four curved portions; and

a plurality of second units each of which has at least two curved portions; and

two first units and one second unit are located on one side and they are symmetrical to the units on the other side.

13. The expanding vascular stent according to claim 12, wherein the plurality cells are joined together in order as the first unit, second unit, and first unit, with respect to a virtual axis.