Extravascular bypass systems and methods
OwnerWei Cheong Steven KUMinventor
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Abstract
Systems and methods are provided for extravascularly bypassing an occlusion within a patient's blood vessel. An upstream bypass stent may be implanted at an implant site upstream of the occlusion and a downstream bypass stent may be implanted at an implant site downstream of the occlusion, wherein an outlet of the upstream stent and an inlet of the downstream stent are coupled extravascularly to permit blood to extravascularly bypass the occlusion. The upstream stent further may include an additional outlet that directs blood to flow through the occluded blood vessel. A kit including a percutaneous tumescence tunneler for implanting the extravascular bypass system is also provided.
Claims21
An extravascular bypass kit comprising:
- an upstream bypass stent comprising:
- an upstream bypass inlet configured to be implanted within at least one blood vessel at a first implant site upstream of an occlusion within the at least one blood vessel;
- a first upstream bypass outlet in fluid communication with the upstream bypass inlet and configured to be implanted extravascularly;
- and
- a second upstream bypass outlet in fluid communication with the upstream bypass inlet, the second upstream bypass outlet configured to direct blood flow from the upstream bypass inlet toward the second upstream bypass outlet;
- and
- a downstream bypass stent comprising:
- a first downstream bypass inlet configured to be implanted extravascularly and to be coupled to the first upstream bypass outlet of the upstream bypass stent such that the first downstream bypass inlet is in fluid communication with the upstream bypass inlet of the upstream bypass stent;
- and
- a downstream bypass outlet configured to be implanted within the at least one blood vessel at a second implant site downstream of the occlusion within the at least one blood vessel, the downstream bypass outlet in fluid communication with the upstream bypass inlet of the upstream bypass stent via the first upstream bypass outlet of the upstream bypass stent and the first downstream bypass inlet such that blood flow through the upstream bypass inlet is directed to bypass the occlusion via the first upstream bypass outlet, the first downstream bypass inlet, and the downstream bypass outlet.
A method for extravascularly bypassing an occlusion within a vessel of a patient, the method comprising:
- implanting an upstream bypass stent at a first implant site upstream of the occlusion within the vessel, the upstream bypass stent having an upstream bypass inlet, a first upstream bypass outlet extending extravascularly from the first implant site, the first upstream bypass outlet in fluid communication with the upstream bypass inlet, and a second upstream bypass outlet upstream of the occlusion in fluid communication with the upstream bypass inlet;
- implanting a downstream bypass stent at a second implant site downstream of the occlusion within the vessel, the downstream bypass stent having a first downstream bypass inlet extending extravascularly from the second implant site, and a downstream bypass outlet in fluid communication with first and second downstream bypass inlets;
- coupling the first upstream bypass outlet of the upstream bypass stent with the first downstream bypass inlet of the downstream bypass stent;
- and
- permitting blood to flow through the upstream bypass inlet to bypass the occlusion via the first upstream bypass outlet, the first downstream bypass inlet, and the downstream bypass outlet, and to flow through the upstream bypass inlet to the downstream bypass outlet via the second upstream bypass outlet.
The method of claim 29, wherein implanting the downstream bypass stent at the second implant site comprises:
- introducing a second delivery sheath over the guidewire from the contralateral access point to the second implant site, the second delivery sheath having the downstream bypass stent disposed therein in a collapsed delivery state;
- and
- implanting the downstream bypass stent at the second implant site using the second delivery sheath.
Dependencies are inferred from the claim text.