Implantable devices for controlling the size and shape of an anatomical structure or lumen

摘要

An implantable device system for controlling the dimensions of internal anatomic passages corrects physiologic dysfunctions resulting from a structural lumen which is either too large or too small. Implantable devices are disclosed which employ various mechanisms for adjusting and maintaining the size of an orifice to which they are attached. Systems permit the implants to be implanted using minimally invasive procedures and permit final adjustments to the dimensions of the implants after the resumption of normal flow of anatomic fluids in situ.

主权项

1. An implantable device system for controlling at least one of the shape and size of an anatomical structure or lumen, comprising:
an implantable device having dimensions and adapted for attachment to an anatomical structure or lumen, said implantable device comprising an adjustable member and a plurality of telescopically arranged hollow tubes, said adjustable member configured to receive an adjustment tool and configured to both increase and decrease the dimensions of the implantable device by expanding between a fully contracted configuration and a fully expanded configuration, wherein said implantable device comprises at least one of said hollow tubes having at least one protuberance and at least one threaded rod threadedly engaged with said at least one protuberance such that rotation of the threaded rod causes the threaded rod to move axially within the hollow tube; and a torqueable adjustment tool configured to provide adjustment of the dimensions of the implantable device, wherein adjustment of said adjustable member adjusts the size of the implantable device generally in a preferred dimension by varying the extent of the telescopic arrangement of the tubes between the fully expanded configuration and the fully contracted configuration, wherein said hollow tubes remain nested when expanding between the fully contracted and fully expanded configurations.