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Stent with longitudinal variable width struts

A width and longitudinal technology, applied in the field of implantable stent medical devices, can solve the problems of difficult retraction and repositioning of the opening structure

Pending Publication Date: 2020-03-27
DEPUY SYNTHES PROD INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, once deployed, open-cell structures may be more difficult to retract and reposition than closed-cell stents

Method used

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  • Stent with longitudinal variable width struts
  • Stent with longitudinal variable width struts
  • Stent with longitudinal variable width struts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Figures 1A-1D The strut pattern of an exemplary stent 100 is shown in . The exemplary stent 100 is shown cut in the longitudinal direction 10 along its length 110 and laid flat. Figure 1A The entire stent 100 is shown; Figure 1B shows as Figure 1A Details of cell 130 shown; Figure 1C shows the positioning of the longitudinal element 200 relative to the interconnecting member 300; and Figure 1D The positioning of the thin section 210 of the longitudinal element 200 and the thin section 310 of the interconnecting member 300 is shown.

[0031] common reference Figures 1A-1DThe stent 100 can be cut from a resilient tube such as Nitinol, Nitinol alloys, other shape memory metals, or resilient implantable tubing such that the stent 100 can have a generally tubular structure having a first open end 112, a second Two open ends 114 , a circumference 120 and a length 110 . The strut pattern may consist of longitudinal elements 200 extending over a majority of the leng...

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Abstract

The invention discloses a stent with longitudinal variable width struts. Stents generally can include multiple longitudinal elements each extending over a majority of the length of the stent and eachhaving alternating flexible and rigid segments. The stents can include nodes positioned between the flexible and rigid segments on the longitudinal elements and interconnecting members extending circumferentially to connect adjacent longitudinal elements at the nodes. The longitudinal elements can have a wave pattern and the interconnecting members can have a branch structure connecting peaks fromone longitudinal element to troughs of an adjacent longitudinal element. The resulting stent structure can have lateral and longitudinal flexibility needed to navigate and conform to intracranial arteries with the benefits of recapturability and structural integrity of a closed cell design.

Description

technical field [0001] The present invention relates generally to implantable stent medical devices, methods of making the same, and more particularly to stents for the treatment of wide-necked intracranial aneurysms. Background technique [0002] Medical stents are used to support, maintain or repair lumens, passages or openings in a living body. The stent design is unique to the location and purpose of the treatment because the stent must be flexible enough to traverse the body lumen to reach the treatment site, and then structurally strong enough to provide the structural support needed to repair the treatment site. The arteries inside the brain are very small compared to the carotid arteries and create many twists and turns, requiring a more flexible stent that not only makes tight turns when approaching the treatment site, but also conforms to the vessel wall when implanted tight curvature. Stents implanted to support embolic coil masses in intracranial aneurysms must...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12A61F2/90A61F2/915
CPCA61B17/12118A61B17/1214A61F2/90A61F2/915A61F2002/9155A61F2002/91583A61F2240/001A61F2002/91575A61F2250/0036A61F2250/0029A61F2002/91566A61F2002/91558A61F2/91A61B17/12168A61B17/12113A61L31/022A61F2002/91525A61F2002/828A61F2240/002A61B2017/00867A61F2/88A61F2/92A61F2/95
Inventor M.克林格P.福塞斯
Owner DEPUY SYNTHES PROD INC
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