Temporary vascular scaffold and scoring device

摘要

Devices and methods for treating a target site in a body lumen are provided. A medical device includes a stent-like structure including a plurality of scoring and non-scoring filaments interwoven with one another. Generally, the stent-like structure will have more non-scoring filaments than scoring filaments to provide greater structural support and to focus the scoring forces on only a few select areas. The stent-like structure is expanded within the target site to score the target site and to provide temporary structural support while the target site is infused with a therapeutic agent. Such therapeutic agent infusion occurs with the use of a drug eluting or drug coated balloon disposed within the stent-like structure or by occluding the target site and introducing a drug into the occluded target site to sit for a period of time.

主权项

1. A medical device for treating a target site in a body lumen, the medical device comprising:
a stent-like structure comprising a plurality of scoring filaments and a plurality of scoring filaments and a plurality of non-scoring filaments interwoven with one another such that the plurality of scoring filaments cross over and under the plurality of non-scoring filaments, each scoring filament and non-scoring filament extending continuously over a full length of the stent-like structure, wherein the stent-like structure comprises more non-scoring filaments crossing over and under scoring filaments than scoring filaments cross over and under non-scoring filaments, wherein each scoring filament has a shape providing a scoring element, wherein the plurality of non-scoring filaments are configured to radially support the body lumen after the stent-like structure has been expanded therein, and wherein the shape of each scoring filament provides a plurality of notches, each notch receiving an individual non-scoring filament as the non-scoring filament crosses over the scoring filament.