Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Arterial prosthesis – Having variable diameter
Reexamination Certificate
1997-03-24
2001-10-16
Milano, Michael J. (Department: 2165)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Arterial prosthesis
Having variable diameter
C623S001350
Reexamination Certificate
active
06302908
ABSTRACT:
FIELD OF THE INVENTION
This invention refers to techniques for the treatment of aneurysm and preferably to the endoluminal treatment thereof, and more particularly, this invention refers to an arterial graft device and a method for positioning the same. More specifically, this invention refers to an aortic bifurcated endoluminal graft device used in the treatment of infra-renal aortic aneurysm, as well as to a process for positioning such device within the infra-renal aorta and the corresponding iliac arteries.
BACKGROUND OF THE INVENTION
In the field of vascular therapies, the endoluminal treatment of aneurysm is being increasingly implemented, together with the treatment of other occlusive diseases and trauma of arteries. In the particular case of infra-renal aortic aneurysm, a bifurcated graft device is currently used, which comprises at least a stump of the kind comprising a deployable and expandable metal material which is disposed at the level of the infra-renal aorta, including both iliac common arteries. In order to carry out this treatment, a double-system graft device, which basically consists of two components or parts, is typically used. The first part is an aortic main tubular body aimed at endoluminally covering the infra-renal aorta, and which goes through an extension or segment that is to be coupled to one of the iliac arteries. Once this first part or component of the graft device has been positioned by the already known catheterizing techniques, the second part of the device has to be connected, which is formed by a contralateral segment to be connected to a connecting opening of the first part of the device. The contralateral segment will be received within the connecting opening of the said first part of the device and will enter said connecting opening through the guidewire of a catheter directed from the femoral artery of the patient up to the aortic aneurysm cavity. Once there, the second component of the graft device will be carefully and properly connected to the connecting opening of the first component of the said graft device.
Inserting the guidewire and guiding it until the same enters the connecting opening of the graft first component is the most difficult step, since the end of the catheter guide, once inside the aneurysm cavity, lacks any guide leading it directly towards the said connecting opening. When the professional tries to find the connecting opening so as to introduce the distal end of the catheter wire, this end can possibly penetrate the aortic mural thrombus—present in the aneurysm cavity—and can eventually cause disruption of the thrombus and embolism of the visceral arteries and of the lower extremity arteries.
In order to prevent such accidents during a treatment of aneurysm consisting in positioning an endoluminal graft, the inventor has sought a solution through the possibility of safely directing the guidewire of the catheter up to the connecting opening of the graft first component, as well as directing the said second component and having it easily connected to the first component through the corresponding connecting opening.
SUMMARY OF INVENTION
Therefore, it is an object of the present invention to provide an arterial graft device, which is formed by two components safely coupled one to the other once the first component is positioned within the artery to be treated, said device comprising guiding means for a guidewire of a catheter and for the second component to be coupled to the connecting opening of the first component.
Further, it is an object of this invention to provide an arterial graft device of the type comprising two parts to be inserted one at a time within the artery to be repaired and which should be connected one to the other within the artery they enter by means of catheterizing techniques, wherein a first of said parts has a connecting opening where the second part is coupled, said first part comprising guiding means which form a funnel allowing entrance of the catheter guidewire and of the second part of said graft device.
It is yet a further object of this invention to provide a process for positioning an arterial graft device at the place where said first part of the device is inserted and positioned within the artery to be repaired, a catheter guidewire being then inserted therein and said second part of the graft device being thereby carried to the connecting opening so as to be connected to the first part of the graft device, wherein said guidewire is directed towards the artery to be repaired and, when reaching said artery, it is funneled through a coned passage that becomes narrower at the portion thereof near said connecting opening, wherein said second part of the graft device is carried along said guidewire and along said funnel until being connected to said connecting opening of the first part of the graft device.
REFERENCES:
patent: 3657744 (1972-04-01), Ersek
patent: 4140126 (1979-02-01), Choudhury
patent: 4562596 (1986-01-01), Kornberg
patent: 4577631 (1986-03-01), Kreamer
patent: 4787899 (1988-11-01), Lazarus
patent: 5078726 (1992-01-01), Kreamer
patent: 5104399 (1992-04-01), Lazarus
patent: 5219355 (1993-06-01), Parodi et al.
patent: 5360443 (1994-11-01), Barone et al.
patent: 5522880 (1996-06-01), Barone et al.
patent: 5562724 (1996-10-01), Vorwerk et al.
patent: 5571171 (1996-11-01), Barone et al.
patent: 5571173 (1996-11-01), Parodi
patent: 5575817 (1996-11-01), Martin
patent: 5578071 (1996-11-01), Parodi
patent: 5578072 (1996-11-01), Barone et al.
patent: 5591229 (1997-01-01), Parodi
patent: 5609627 (1997-03-01), Goicoechea et al.
patent: 5628788 (1997-05-01), Pinchuk
patent: 5632763 (1997-05-01), Glastra
patent: 5632772 (1997-05-01), Alcime et al.
patent: 5639278 (1997-06-01), Dereume et al.
patent: 5683449 (1997-11-01), Marcade
patent: 5824037 (1998-10-01), Fogarty et al.
patent: 5824040 (1998-10-01), Cox et al.
patent: 5824042 (1998-10-01), Lombardi et al.
patent: B1 4733665 (1994-01-01), Palmaz
patent: 0 508 473 A2 (1992-10-01), None
patent: 0 539 237 A1 (1993-04-01), None
patent: WO 98/32399 (1998-07-01), None
Milano Michael J.
Ratner & Prestia
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