Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Arterial prosthesis – Bifurcated
Reexamination Certificate
1999-06-07
2003-11-18
Snow, Bruce (Department: 3738)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Arterial prosthesis
Bifurcated
C623S001160
Reexamination Certificate
active
06648913
ABSTRACT:
TECHNICAL FIELD
The present invention relates generally to intraluminal grafts or “stents” and, more specifically, to improved-guidewire-access modular intraluminal prostheses having a sealing section where one module attaches to another.
BACKGROUND OF THE INVENTION
A stent is an elongated device used to support an intraluminal wall. In the case of a vascular stenosis, a stent provides an unobstructed conduit for blood in the area of the stenosis. Such a stent may also have a layer of prosthetic material that covers or lines the inside or outside thereof. Such a covered or lined stent is commonly referred to in the art as an intraluminal prosthesis, an endoluminal or endovascular graft (EVG), or a stent-graft. As used herein, however, the term “stent” is a shorthand reference referring to a covered or uncovered such stent.
Such a prosthesis may be used, for example, to treat a vascular aneurysm by removing the pressure on a weakened part of an artery so as to reduce the risk of rupture. Typically, an intraluminal stent or prosthesis is implanted in a blood vessel at the site of a stenosis or aneurysm endoluininally, i.e. by so-called “minimally invasive techniques” in which the stent, restrained in a radially compressed configuration by a sheath or catheter, is delivered by a stent deployment system or “introducer” to the site where it is required. The introducer may enter the body through the patient's skin, or by a “cut down” technique in which the entry blood vessel is exposed by minor surgical means. When the introducer has been threaded into the body lumen to the stent deployment location, the introducer is manipulated to cause the stent to be released from the surrounding sheath or catheter in which it is restrained (or alternatively the surrounding sheath or catheter is retracted from the stent), whereupon the stent expands to a predetermined diameter at the deployment location, and the introducer is withdrawn. Stent expansion may be effected by spring elasticity, balloon expansion, or by the self-expansion of a thermally or stress-induced return of a memory material to a pre-conditioned expanded configuration.
Modular stents and prostheses are known in the art for in vivo assembly, particularly as applied to a bifurcated artery or vein, such as, for example, the bifurcation in the mammalian aortic artery into the common iliac arteries. The endoluminal navigation of a second component to find and mate with a previously deployed first component can be difficult.
Typically, the surgeon must navigate a guidewire to find an opening in the previously placed component, where the second component is to be mated therewith. Because of the tortuosity of the anatomy, the difficulty of visualizing that opening via fluoroscopy, and the two-dimensional nature of the fluoroscopic image, accessing that opening with the guidewire is one of the most difficult and time-consuming aspects of deploying such a prosthesis. Additionally, because of the difficulty in making the connection with that opening, the guidewire may inadvertently miss the opening and dislodge thrombus or pierce a wall of the lumen in which the prosthesis is being placed.
In a design known prior to the invention and as shown in
FIG. 1
, a body
30
disposed in the infrarenal area of the aorta with an integral elongated segment
32
extending into a first iliac artery
16
also comprises an integral funnel-shaped segment
34
alongside the elongated segment. Funnel-shaped segment
34
is adapted to capture guidewire
18
introduced from the iliac artery
16
′ into mouth
36
and to prevent the guidewire from contacting artery wall
26
. The second modular component of the graft
37
is then inserted along guidewire
18
into funnel-shaped segment
34
from the iliac artery
16
′ and thus guided to a connection with first part body
30
at port
38
. No particular type of connection between body
30
and second modular component
37
is disclosed in this prior known construction except as shown in FIG.
1
.
SUMMARY OF THE INVENTION
The present invention provides an intraluminal prosthesis adapted for insertion into and assembly within a body lumen to repair the lumen. The prosthesis comprises a female mating member comprising a main body portion, a funnel-shaped end, a connecting segment connecting the main body portion to the funnel-shaped end; and a male mating member adapted for secure and/or fluid-tight assembly with the connecting segment of the female mating member. The connecting segment may be essentially cylindrical or it may taper with decreasing diameter from the main body to the funnel-shaped end. The connecting segment and adjacent funnel-shaped end may together form an hourglass-shaped end.
A biocompatible material may cover one or both of the inner mating surface of the sealing segment and the outer mating surface of the male mating member adapted for contact with the sealing segment. The biocompatible graft material may cover the inner surface of the funnel-shaped end, and in particular, may cover the outer surface of the entire prosthesis except for the funnel-shaped end, which is covered only on the inner surface thereof.
The prosthesis may be bifurcated into first and second extensions depending from the main body section, wherein one or both of the extensions comprise an integral female mating member with a connecting segment as disclosed and claimed herein. One extension may comprise an integral first leg member that depends from the main body alongside the integral female mating member extension into which the male mating member mates to comprise a second leg member. Specifically, the prosthesis may form a bifurcated aortic intraluminal prosthesis adapted for deployment in the infra-renal aorta and the iliac arteries, where the main body component forms the main aortic body, the integral first leg member forms the first iliac segment, and the second leg member forms the second iliac segment.
It is to be understood that both the foregoing general description and the following detailed description are exemplary, but are not restrictive, of the invention.
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: 4733665 (1988-03-01), Palmaz
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: 5984955 (1999-11-01), Wisselink
patent: 5993481 (1999-11-01), Marcade et al.
patent: 6015431 (2000-01-01), Thornton et al.
patent: 6030415 (2000-02-01), Chuter
patent: 6099558 (2000-08-01), White et al.
patent: 6302908 (2001-10-01), Parodi
patent: 0 508 473 (1992-04-01), None
patent: 0 539 237 (1992-10-01), None
patent: 1 029 518 (2000-08-01), None
patent: WO 98/06355 (1998-02-01), None
patent: 98/32399 (1998-07-01), None
U. S. patent application Ser. No. 08/822,858, to Parodi, filed Mar. 24, 1997.
Nu{overscore (n)}ez José F.
Staudenmeier Marianne W.
Yee Carl E.
Pellegrino Brian E
RatnerPrestia
Sci-Med Life Systems, Inc.
Snow Bruce
LandOfFree
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