Fork-type covered stent
A bifurcated stem graft comprises a body and a side branch that forms an acute angle with the body. The side branch comprises a covering film and a first bare stent only disposed on the covering film. Part of the first bare stent is positioned adjacent a boundary line of the body and the covering fi...
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| Format | Patent |
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| Language | English |
| Published |
29.01.2019
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| Online Access | Get full text |
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| Summary: | A bifurcated stem graft comprises a body and a side branch that forms an acute angle with the body. The side branch comprises a covering film and a first bare stent only disposed on the covering film. Part of the first bare stent is positioned adjacent a boundary line of the body and the covering film and is located in a vertex angle area of the acute angle. Due to the fact that part of the first bare stem is attached to the vertex angle area, after the stem is released, the self-expanded part of the first bare stent enables the vertex angle area of the side branch to be effectively supported, the covering film is not prone to shrinkage, and a leading wire can enter easily. Meanwhile, a special bare stent attached to the vertex angle area does not need to be additionally disposed on the first bare stent, and thus the technology for preparing the bare stem is simplified; furthermore, the first bare stent is only disposed on the side branch and does not need to span the connecting part of the body and the side branch, and thus the waveform can be shaped easily. |
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