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Stent and stent delivery device

A wave-shaped, ring-shaped component technology used in the field of stents and stent delivery devices, which can solve the problems of stents lack of flexibility and not suitable for adapting to the inside of blood vessels

Active Publication Date: 2009-08-26
TERUMO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, such stents lack flexibility and have a design that is not suitable for conforming to the interior of vessels and placing them in curved parts

Method used

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  • Stent and stent delivery device
  • Stent and stent delivery device
  • Stent and stent delivery device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The stent of the present invention to be implanted in a living body is described below by using the following preferred embodiments.

[0030] figure 1 It is a front view of a stent of an embodiment of the present invention to be implanted in a living body. figure 2 Yes figure 1 Expanded view of the bracket shown. image 3 Yes figure 2 Part of the enlarged view. Figure 4 Is when manufacturing the stent figure 1 Expanded view of the bracket shown. Figure 5 Yes Figure 4 Part of the enlarged view. Figure 6 It is an unfolded view of another embodiment of the stent of the present invention to be implanted in the living body when the stent is manufactured. Figure 7 Yes Figure 6 Part of the enlarged view.

[0031] The stent 1 of the present invention to be implanted in a living body is basically formed as a tube, which has the following form, in which a plurality of wave-shaped ring members 2 are arranged adjacent to each other in the axial direction of the stent 1, and...

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PUM

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Abstract

A stent (1) to be implanted in a living body is formed substantially as a tube which has a form in which a plurality of wavy annular members (2) is arranged adjacently to each other in an axial direction of the stent (1) with the adjacent wavy annular members (2) connected with each other, has a diameter whose dimension is so set that the stent (1) can be inserted into a lumen inside a living body, and can be expanded when a force spreading radially from an inside of the tube is applied thereto. The wavy annular member (2) has parallel straight-line portions (11) extended in parallel with the axis of the stent (1) before and after the stent (1) expands. The stent (1) has connection portions (3) each connecting ends of the parallel straight-line portions (11) of the adjacent wavy annular members (2) to each other.

Description

Technical field [0001] The present invention relates to implanting a stent in the lumen of living organisms such as blood vessel, bile duct, trachea, esophagus, ureter, etc., to improve the narrowed or closed part produced in the lumen. The invention also relates to stent delivery devices. Background technique [0002] In order to cure various diseases caused by stenosis or closure of blood vessels or lumens, a stent is a tubular medical device implanted in the lumen of a living body to expand the narrowed or closed part to fix the lumen. [0003] The stent is inserted into the body from outside the body. Therefore, the stent is configured to have a small diameter when inserted into the body, and to increase by expansion at the expected narrow or closed portion, thereby maintaining the expanded state of its lumen. [0004] The bracket is cylindrical and made of metal wire or processed metal tube. After the stent is installed on a catheter or the like by reducing its diameter, it ...

Claims

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Application Information

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IPC IPC(8): A61F2/84A61F2/915A61F2/958A61M29/00A61M29/02
CPCA61F2/91A61F2002/91558A61F2/90A61F2/915A61F2/958A61F2/86
Inventor 后藤大树
Owner TERUMO KK