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  Endoluminal prosthesisUSPTO Application #: 20060100690Title: Endoluminal prosthesis Abstract: An expandable endolumenal prosthesis comprises, in the non-expanded configuration, a tubular body extending along a longitudinal axis and having a distal end and a proximal end, the tubular body having a porous wall defined by a plurality of interlaced circumferential lines forming a pathway motif or pattern, in which: at least one line is closed onto itself, each of the lines extends along an axis, each of the lines comprises at least one plurality of modules, each module comprises three lobes, that is, two outer lobes and one inner lobe disposed between the two outer lobes in the pathway of the pattern, each lobe comprises one or more curved sections having concavities facing in the same direction defining an apex of the lobe, the lobes opening alternately on opposite sides of the pathway of the pattern along the extent of the line, both of the outer lobes of the three lobes being extended by straight outer arms, the at least one plurality of modules being arranged consecutively so as to have successive outer arms which extend from the outer lobes in substantially opposite directions relative to the pathway of the pattern for two successive modules, and in which, for each module, the distance between the apex of one of the outer lobes and the apex of the inner lobe of the same module is less than the distance between the apex of the same outer lobe and the apex of any outer lobe of an adjoining module. (end of abstract) Agent: Shoemaker And Mattare, Ltd - Silver Spring, MD, US Inventor: Andrea Venturelli USPTO Applicaton #: 20060100690 - Class: 623001150 (USPTO) Related Patent Categories: Prosthesis (i.e., Artificial Body Members), Parts Thereof, Or Aids And Accessories Therefor, Arterial Prosthesis (i.e., Blood Vessel), Stent Structure The Patent Description & Claims data below is from USPTO Patent Application 20060100690. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001] The subject of the present invention is an expandable endolumenal prosthesis. BACKGROUND OF THE INVENTION [0002] This term defines, in general, a device which is inserted in a lumen, for example, a vascular duct and, in particular, an arterial duct, usually by means of an endolumenal-prosthesis transport system, or stent delivery system (SDS), and is then expanded or spread out in situ in order to support the walls of the lumen locally. The main object of this support is to eliminate the blockage, for example, brought about by a stenosis, and to prevent the re-formation thereof. [0003] A general treatise on endolumenal protheses or stents can be found in the works "Techniques in coronary artery stenting" by Colombo and Tobis, Martin Dumitz Ltd., 2000 and "Handbook of cardiovascular interventions" by Ulrich Sigwart, Michel Bertrand, Patrick W. Serruys, Harcourt Brace & Company Limited, 1996. [0004] Endovascular protheses are generally known. However, the term "endovascular prosthesis" has been used interchangeably with other terms such as "stent" or "expandable prosthesis". The term "vascular prosthesis" used in this description should be understood as including any expandable prosthetic device for implantation in a human or animal duct (such as, for example, a lumen, an artery, a vessel, a respiratory duct, a gastrointestinal duct, a bile duct, or the like). [0005] A large number of patent documents relating to endolumenal prostheses have been filed in the past, for example: [0006] U.S. Pat. No. 4,733,665 (Palmatz), U.S. Pat. No. 4,739,762 (Palmatz), U.S. Pat. No. 4,800,882 (Gianturco), U.S. Pat. No. 4,907,336 (Gianturco), U.S. Pat. No. 5,035,706 (Gianturco et al.), U.S. Pat. No. 5,037,392 (Hillstead), U.S. Pat. No. 5,041,126 (Gianturco), U.S. Pat. No. 5,102,417 (Palmatz), U.S. Pat. No. 5,147,385 (Beck et al.), U.S. Pat. No. 5,282,824 (Gianturco), U.S. Pat. No. 5,316,023 (Palmatz et al.), CA 1,239,755 (Wallsten), CA 1,245,527 (Gianturco et al.), CA 2,134,997 (Penn et al.), CA 2,171,047 (Penn et al.), CA 2,175,722 (Penn et al.), CA 2,185,740 (Penn et al.), CA 2,192,520 (Penn et al.), PCT/CA97/00151 (Penn et al.), PCT/CA97/00152 (Penn et al.), PCT/CA97/00294 (Penn et al.), EP 0 895 760 (Bartorelli), EP 0 888 093 (Penn et al.), EP 1 151 730 (Hojeibane), EP 0 956 832 (Richter et al.), PCT/US98/08194 (Dubrull). [0007] An endolumenal prosthesis has to fulfil two somewhat conflicting requirements. [0008] First of all, the endolumenal prosthesis has to have a high degree of flexibility when it is in its non-expanded state to facilitate the delivery of the prosthesis through the tortuous anatomy as far as the implantation site. Moreover, when the prosthesis is in the expanded condition, it has to demonstrate sufficient radial stiffness to minimize the collapse of the walls of the duct in which it has been deposited and, for example, re-stenosis effects, as well as effectively resisting the possibility of acute occlusion. These conflicting requirements, that is, the provision of a prosthesis which has considerable flexibility when in the non-expanded condition whilst having great radial stiffness in the expanded condition, have been achieved in the past with the use of struts that are interconnected, typically with a longitudinal arrangement, to confer great flexibility on the prosthesis in the non-expanded or contracted condition, and further interconnected struts, for example, nonlongitudinal circumferential lines or rings of struts, which open up to rings that are stiff radially (at least in an ideal situation), to confer the necessary radial stiffness on the prosthesis in expanded conditions. [0009] A solution which partially satisfied these requirements was proposed in US patent application 2002/0065547 (Moore). [0010] There is nevertheless still a further great need to find an endolumenal prosthesis which can easily be clenched in a radially contracted position around delivery and expansion devices (SDS). This need in fact conflicts particularly with the need to have interconnected circumferential struts that are capable of withstanding radial stresses adequately when in the expanded condition. In fact these struts are difficult to clench around the delivery and expansion devices (SDS) precisely because of their structural capacities. SUMMARY OF THE INVENTION [0011] The problem underlying the present invention is therefore that of proposing an endolumenal prosthesis which has structural and functional characteristics such as to overcome the disadvantages of the prior art in order to satisfy the above-mentioned requirements. [0012] This problem is solved by means of an endolumenal prosthesis of the type described in claim 1. BRIEF DESCRIPTION OF THE DRAWINGS [0013] Further characteristics and the advantages of the endolumenal prosthesis according to the invention will become clear from the following description of the preferred embodiments thereof which are given purely by way of non-limiting example with reference to the appended drawings, in which: [0014] FIG. 1 is a two-dimensional view of a pathway motif or pattern for an endolumenal prosthesis, in the non-expanded configuration, [0015] FIG. 2 shows a detail relating to a line portion of the pattern of FIG. 1, [0016] FIG. 3 shows a detail relating to a module of the line of FIG. 2, [0017] FIG. 4 shows a further detail of the line of FIG. 2, relating to a further module, [0018] FIG. 4bis shows a lobe according to a further embodiment, [0019] FIG. 5 shows a portion of a line according to a further embodiment, [0020] FIG. 6 shows a line portion according to yet another embodiment, Continue reading... Full patent description for Endoluminal prosthesis Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Endoluminal prosthesis patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Endoluminal prosthesis or other areas of interest. ### Previous Patent Application: Stent crimper with slit sheath Next Patent Application: Variable expansion force stent Industry Class: Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor ### FreshPatents.com Support Thank you for viewing the Endoluminal prosthesis patent info. 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