Vascular stent

• US 6,187,035 B1
• Filed: 07/16/1998
• Issued: 02/13/2001
• Est. Priority Date: 07/16/1997
• Status: Expired due to Term

• Current Assignee: Flexstent, LLC (Pratima Instruments, LLC)
• Original Assignee: Yang-Soo Jang
• Inventors: Jang, Yang-Soo
• Primary Examiner(s): Milliw, V.
• Assistant Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US09/118,133
• Time in Patent Office: 943 Days
• Field of Search: 623/1, 623/12, 623/1.15, 623/1.16, 623/1.28
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• 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

Abstract

The present invention relates to a vascular stent comprising wide vertical branches and narrow horizontal branches having wave-form projections, which has a vertically denser distribution. The vascular stent of the present invention comprises stainless steel-based vertical branches and horizontal branches having wave-form projections. The widths of the vertical branch and horizontal branch range 0.09 to 0.12 mm and 0.05 to 0.09 mm, respectively, while each thickness of those are identical to each other and range 0.08 to 0.12 mm. The vascular stent of the invention provides so superior flexibility as to afford excellent adaptability to the anatomy of the vessel. Moreover, the dense distribution of the branches improves strength of stability of the vascular stent, which allows the stent to sufficiently expand against high recoiling force. Implantation of the vascular stent to patients with coronary artery obrustructive disease (CAOD) can restore the constricted blood vessels to the original state, which normalizes the blood flow rate, and further, decreases the restenosis rate as well.

Claims

1. A vascular stent which comprises vertical branches whose width and thickness range 0.09 to 0.12 mm and 0.08 to 0.12 mm, respectively, and horizontal branches having wave form projections, whose width and thickness range 0.05 to 0.08 mm and 0.08 to 0.12 mm, respectively.

2. The vascular stent of claim 1, wherein unit lengths of the vertical branch and the horizontal branch range 1.5 to 4.5 mm and 1.0 to 3.0 mm, respectively.

3. The vascular stent of claim 1, wherein diameter and length of the stent range 1.0 to 5.75 mm and 9.0 to 60 mm, respectively.