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US 2014/0277338 A1Published application
Device and method for treating vascular dissections
AssigneeCook Medical Technologies LLC
InventorsTilo Kölbel, Erik E. Rasmussen
Life of this patent
Estimating the term…
Abstract
An implantable medical device (30) for treating aortic dissections includes a stent graft part (34) having a bulbous section (48) of greater radial diameter than the radial diameter of first and second sections (60,62) of the stent graft part (34). The bulbous section (48) is able to close off the false lumen (10) of an aortic dissection, thereby to prevent any fluid backflow into the false lumen (10). Radiopaque markers (70) may be provided for orientation and deployment purposes. The device (30) is able to treat chronic dissections and reduce false lumen backflow, which remains otherwise an unresolved issue in the endovascular treatment of false lumen aneurysms.
Claims20
An implantable medical device for treating a dissection, the device including:
- a graft element provided with:
- a first graft section of tubular form and having a first diameter;
- an intermediate graft section of generally tubular form and having a second diameter greater than the first diameter;
- a third graft section of tubular form and having a third diameter less than the second diameter, the intermediate graft section being disposed between the first and third graft sections;
- and
- a first transition graft section between the first and intermediate graft sections, and a second transition section between the intermediate and third graft sections;
- at least one first stent ring associated with the first graft section and having a first expanded operating diameter, at least one second stent ring associated with the intermediate graft section and having a second expanded operating diameter greater than said first expanded operating diameter, and at least one third stent ring associated with the third graft section;
- the device having a first expanded diameter in which the first, intermediate and third graft sections have substantially the same expanded diameters, the device further having a second expanded diameter in which the intermediate graft section is expanded to said second diameter, being greater than the expanded diameters of the first and third graft sections.
5 more elements
An implantable medical device for treating a dissection, the device including:
- a graft element provided with:
- a first graft section of tubular form and having a first diameter;
- an intermediate graft section of generally tubular form and having a second diameter greater than the first diameter;
- a third graft section of tubular form and having a third diameter less than the second diameter, the intermediate graft section being disposed between the first and third graft sections;
- and
- a first transition graft section between the first and intermediate graft sections, and a second transition section between the intermediate and third graft sections;
- at least one first stent ring associated with the first graft section and having a first expanded operating diameter, at least one second stent ring associated with the intermediate graft section and having a second expanded operating diameter greater than said first expanded operating diameter, and at least one third stent ring associated with the third graft section;
- the device having a first expanded diameter in which the first, intermediate and third graft sections have substantially the same expanded diameters, the device further having a second expanded diameter in which the intermediate graft section is expanded to said second diameter, being greater than the expanded diameters of the first and third graft sections and being asymmetrically disposed relative to the first and third graft sections.
5 more elements
A method of deploying an implantable medical device, which device includes:
- a graft element provided with:
- a first graft section of tubular form and having a first diameter;
- an intermediate graft section of generally tubular form and having a second diameter greater than the first diameter;
- a third graft section of tubular form and having a third diameter less than the second diameter, the intermediate graft section being disposed between the first and third graft sections;
- and a first transition graft section between the first and intermediate graft sections, and a second transition section between the intermediate and third graft sections;
- and
- at least one first stent ring associated with the first graft section and having a first expanded operating diameter, at least one second stent ring associated with the intermediate graft section and having a second intermediate operating diameter greater than said first operating diameter, and at least one third stent ring associated with the third graft section;
- the method including the steps of:
- positioning the medical device in a radially contracted state in a patient's vessel;
- radially expanding the graft element to a first expanded diameter in which the first, intermediate and third graft sections have substantially the same expanded diameters and press against the vessel walls;
- deploying a balloon of a balloon catheter so as to radially expand the second stent rings to as to cause the intermediate graft section to press against the vessel wall and so as to cause the intermediate graft section to expand radially to a greater diameter than the expanded diameters of the first and third graft sections.
8 more elements
A kit including:
- an implantable medical device, which device includes:
- a graft element provided with:
- a first graft section of tubular form and having a first diameter;
- an intermediate graft section of generally tubular form and having a second diameter greater than the first diameter;
- a third graft section of tubular form and having a third diameter less than the second diameter, the intermediate graft section being disposed between the first and third graft sections;
- and a first transition graft section between the first and intermediate graft sections, and a second transition section between the intermediate and third graft sections;
- and at least one first stent ring associated with the first graft section and having a first expanded operating diameter, at least one second stent ring associated with the second graft section and having a second expanded operating diameter greater than said first expanded operating diameter, and at least one third stent ring associated with the third graft section;
- and
- a balloon catheter including a deployment balloon, which deployment balloon has an inflated diameter at least as large as the second diameter.
6 more elements
Dependencies are inferred from the claim text.