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Low profile prosthesis

A technology of prosthesis and human body, applied in the field of grafts, can solve the problems of increasing the volume, limitation, and increase of cross-section of compressed stent grafts

Inactive Publication Date: 2012-05-30
MEDTRONIC VASCULAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, stent-grafts with relatively large cross-sections in the radially compressed delivery state can be limited in their ability to access small and / or tortuous vascular structures
The connection between the stent-graft and the bare spring or crown stent can detrimentally increase the volume of the compressed stent-graft and thereby make delivery at the attachment region difficult when the stent or stent-graft is in a radially compressed delivery configuration. The cross-section of the system increases

Method used

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  • Low profile prosthesis
  • Low profile prosthesis
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Examples

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Embodiment Construction

[0027] In the following description, reference is made to the drawings, wherein, referring to the various drawings, it should be understood that like reference numerals or features designate like components.

[0028] One embodiment according to the invention includes a plurality of straps or ribbons (e.g., flat ribbons) securing exposed springs to tubular prostheses, which may be grafts or stent grafts (covered stent ), while the exposed spring and the graft do not overlap relative to each other, so that the prosthesis can be radially compressed without overlapping the tubular prosthesis and the exposed spring. The exposed springs that help anchor the prosthesis to the vessel may also be referred to as coronal stents and, when the prosthesis is a bifurcated stent-graft, suprarenal stents. One of the many advantages of this configuration is that in cases where the prosthesis is radially compressed for delivery (e.g., radially compressed in a sheath for delivery to the target si...

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Abstract

A prosthesis comprises a tubular graft and a bare spring (108) connected in non-overlapping relation thereto through a plurality of straps (112) adhered to the graft and extending around portions of the bare spring.

Description

technical field [0001] The present invention relates to a graft suitable for placement in a body lumen, such as an artery. Background technique [0002] Tubular prostheses such as stents, grafts, and stent-grafts (e.g., stents having inner and / or outer coverings comprising graft material, and which may be referred to as covered stents) have been used to treat bodily passages exception in . In vascular applications, these devices are typically used to replace or bypass occluded, diseased or damaged blood vessels such as stenotic or aneurysmal vessels. For example, it is well known to treat or isolate aneurysms using stent-grafts comprising a biocompatible graft material (e.g., fabric, polytetrafluoroethylene (PTFE) or expanded polytetrafluoroethylene (ePTFE) or some other polymer). The frame provides mechanical support, while the graft material or liner provides the blood barrier. Protocols for fabricating stent-grafts include suturing one or more stents or annular metal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/06A61F2/82
CPCA61F2230/0054A61F2/89A61F2220/0033A61F2002/828A61F2/07A61F2002/075A61F2002/8486A61F2230/0013
Inventor J·S·温鲁恩
Owner MEDTRONIC VASCULAR INC