Vascular inducing implants
First Claim
1. A tissue implant device for implantation into ischemic tissue comprising:
- an implant having a first configuration with a first profile and a second configuration having a second profile that is greater than the first profile whereby surrounding tissue into which the implant is placed in stress and is irritated sufficiently to cause an injury response including thrombosis formation that initiates angiogenesis;
the implant comprising a plurality of expandable members each having a free end and an end joined to the implant, each member configured to diverge away from a substantially common central longitudinal axis of the implant during self-expansion from the first configuration to the second configuration.
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Accused Products
Abstract
Implants and associated delivery systems for promoting angiogenesis in ischemic tissue are provided. The implants may be delivered percutaneously, thoracically or surgically and are particularly well suited for implantation into the myocardium of the heart. The implants are configured to have a first configuration having a low profile and an expanded, second configuration having a large profile. The implants are delivered to the ischemic tissue location in the first configuration, implanted then expanded to the second configuration. The expanded implants maintain a stress on the surrounding tissue, irritating and slightly injuring the tissue to provoke an injury response that results in angiogenesis. The flow of blood from the surrounding tissue into the implant and pooling of the blood in and around the implant leads to thrombosis and fibrin growth. This healing process leads to angiogenesis in the tissue surrounding the implant. Additionally, the implants may contain an angiogenic substance or a thrombus of blood, preloaded or injected after implantation to aid in initiating angiogenesis.
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Citations
15 Claims
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1. A tissue implant device for implantation into ischemic tissue comprising:
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an implant having a first configuration with a first profile and a second configuration having a second profile that is greater than the first profile whereby surrounding tissue into which the implant is placed in stress and is irritated sufficiently to cause an injury response including thrombosis formation that initiates angiogenesis;
the implant comprising a plurality of expandable members each having a free end and an end joined to the implant, each member configured to diverge away from a substantially common central longitudinal axis of the implant during self-expansion from the first configuration to the second configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification