Búsqueda Imágenes Maps Play YouTube Noticias Gmail Drive Más »
Iniciar sesión
Usuarios de lectores de pantalla: deben hacer clic en este enlace para utilizar el modo de accesibilidad. Este modo tiene las mismas funciones esenciales pero funciona mejor con el lector.

Patentes

  1. Búsqueda avanzada de patentes
Número de publicaciónUS20050119731 A1
Tipo de publicaciónSolicitud
Número de solicitudUS 11/028,754
Fecha de publicación2 Jun 2005
Fecha de presentación3 Ene 2005
Fecha de prioridad26 Feb 2001
También publicado comoUS7758634, US8632579, US20030097169, US20070168020, US20110004287, WO2002067653A2, WO2002067653A3
Número de publicación028754, 11028754, US 2005/0119731 A1, US 2005/119731 A1, US 20050119731 A1, US 20050119731A1, US 2005119731 A1, US 2005119731A1, US-A1-20050119731, US-A1-2005119731, US2005/0119731A1, US2005/119731A1, US20050119731 A1, US20050119731A1, US2005119731 A1, US2005119731A1
InventoresGregory Brucker, Enrique Malaret, Todd Hall, David Byrd, Gerald Hubbs, Gregory Furnish, Josh Barber, Indaka Gunasekara, Benjamin Morris, Valerie Futral, Sava Chernomordik, William MersKelly, William Reuss, Simon Furnish, Michael Wilson, Hacene Bouadi, John Muskivitch, Mathew Pease, David Rahdert, Travis Rowe, Gregory Ruhf, Brandon Walsh, Thomas Banks, Russ Redmonds, Claude Vidal
Cesionario originalBrucker Gregory G., Enrique Malaret, Todd Hall, David Byrd, Gerald Hubbs, Gregory Furnish, Josh Barber, Indaka Gunasekara, Benjamin Morris, Valerie Futral, Chernomordik Sava A., Merskelly William C., Reuss William A.Jr., Simon Furnish, Wilson Michael A., Hacene Bouadi, Muskivitch John C., Pease Mathew L., Rahdert David A., Travis Rowe, Ruhf Gregory M., Walsh Brandon G., Thomas Banks, Russ Redmonds, Claude Vidal
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
Bifurcated stent and delivery system
US 20050119731 A1
Resumen
Systems for delivering a bifurcated stent to a bifurcation site comprise catheters and/or bifurcated stents delivered therefrom.
Imágenes(18)
Previous page
Next page
Reclamaciones(6)
1-42. (canceled)
43. A bifurcated catheter system comprising:
a catheter, the catheter comprising a first balloon and a second balloon, each balloon having an unexpanded state and an expanded state wherein in the expanded state each balloon has a diameter greater than the diameter in the unexpanded state, a region of each balloon being immediately adjacent one another in both the unexpanded state and the expanded state to define a trunk region; and
a retaining band, the retaining band disposed about the trunk region of the balloons, the retaining band constructed and arranged to limit expansion of the trunk region relative to portions of the balloons adjacent to the trunk region.
44. The system of claim 43 further comprising a bifurcated stent, the stent being expandable from an unexpanded configuration to an expanded configuration, the stent being in the expanded configuration when the balloons are in the expanded state, the bifurcated stent comprising a trunk, a first branch and a second branch, at least a portion of the trunk disposed about the retaining band, the first branch disposed about a portion of the first balloon distally adjacent to the trunk region of the balloons and the second branch disposed about a portion of the second balloon distally adjacent to the trunk region of the balloons.
45. The system of claim 44 wherein in the expanded configuration the trunk of the stent has a diameter substantially equal to that of the first branch.
46. A bifurcated catheter system comprising:
a catheter, the catheter comprising a first balloon and a second balloon, each balloon being expandable from an unexpanded state to an expanded state, wherein in the expanded state each balloon has a diameter greater than the diameter in the unexpanded state, each balloon having a proximal region and a distal region; and
a retaining band, the retaining band disposed about at least a portion of the proximal region of the first balloon and at least a portion of the proximal region of the second balloon, the retaining band constructed and arranged to restrict expansion of the at least a portion of the proximal region of the first balloon and the at least a portion of the proximal region of the second balloon, such that in the expanded state the sum of the diameters of the proximal region of the first balloon and the proximal region of the second balloon is substantially equal to the diameter of the distal region of first balloon.
47. The system of claim 46 further comprising a bifurcated stent, the bifurcated stent comprising a trunk, a first branch and a second branch, the trunk being disposed about a proximal region of the first balloon and the second balloon, the first branch being disposed about at least a portion of the distal region of the first balloon, the second branch being disposed about at least a portion of the distal region of the second balloon,
the bifurcated stent being expandable from an unexpanded configuration to an expanded configuration when the balloons are expanded, in the expanded configuration the trunk has a diameter substantially equal to the diameter of the distal region of first balloon.
Descripción
    CROSS-REFERENCE TO RELATED APPLICATIONS
  • [0001]
    This application claims priority from U.S. provisional applications 60/271,506 filed Feb. 26, 2001; U.S. provisional application 60/271,602 filed Feb. 26, 2001; and U.S. provisional application 60/271,595 filed Feb. 26, 2001; the entire content of each being incorporated herein by reference.
  • STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH
  • [0002]
    Not Applicable
  • BACKGROUND OF THE INVENTION
  • [0003]
    Stents, grafts, stent-grafts, vena cava filters and similar implantable medical devices, collectively referred to hereinafter as stents, are radially expandable endoprostheses which are typically intravascular implants capable of being implanted transluminally and enlarged radially after being introduced percutaneously. Stents may be implanted in a variety of body lumens or vessels such as within the vascular system, urinary tracts, bile ducts, etc. Stents may be used to reinforce body vessels and to prevent restenosis following angioplasty in the vascular system. They may be self-expanding or expanded by an internal radial force, such as when mounted on a balloon.
  • [0004]
    Stents are generally tubular devices for insertion into body lumens. Balloon expandable stents require mounting over a balloon, positioning, and inflation of the balloon to expand the stent radially outward. Self-expanding stents expand into place when unconstrained, without requiring assistance from a balloon. A self-expanding stent is biased so as to expand upon release from the delivery catheter. Some stents may be characterized as hybrid stents which have some characteristics of both self-expandable and balloon expandable stents.
  • [0005]
    Stents may be constructed from a variety of materials such as stainless steel, Elgiloy, nitinol, shape memory polymers, etc. Stents may also be formed in a variety of manners as well. For example a stent may be formed by etching or cutting the stent pattern from a tube or section of stent material; a sheet of stent material may be cut or etched according to a desired stent pattern whereupon the sheet may be rolled or otherwise formed into the desired tubular or bifurcated tubular shape of the stent; one or more wires or ribbons of stent material may be braided or otherwise formed into a desired shape and pattern.
  • [0006]
    A vessel having a stenosis may be viewed as an inwardly protruding arcuate addition of hardened material to a cylindrical vessel wall, where the stenosed region presents a somewhat rigid body attached along, and to, the elastic wall. The stenosis presents resistance to any expansion of the vessel in the region bridged by the stenosis. Stenoses vary in composition, for example, in the degree of calcification, and therefore vary in properties as well.
  • [0007]
    A stent may be used to provide a prosthetic intraluminal wall e.g. in the case of a stenosis to provide an unobstructed conduit for blood in the area of the stenosis. An endoluminal prosthesis comprises a stent which carries a prosthetic graft layer of fabric and is used. e.g. to treat an aneurysm by removing the pressure on a weakened part of an artery so as to reduce the risk of embolism, or of the natural artery wall bursting. Typically, a stent or endoluminal prosthesis is implanted in a blood vessel at the site of a stenosis or aneurysm by so-called “minimally invasive techniques” in which the stent is compressed radially inwards and is delivered by a catheter to the site where it is required through the patient's skin or by a “cut down” technique in which the blood vessel concerned is exposed by minor surgical means. When the stent is positioned at the correct location, the catheter is withdrawn and the stent is caused or allowed to re-expand to a predetermined diameter in the vessel.
  • [0008]
    U.S. Pat. No. 4,886,062 discloses a vascular stent which comprises a length of sinuous or “zig-zag” wire formed into a helix; the helix defines a generally cylindrical wall which, in use, constitutes a prosthetic intraluminal wall. The sinuous configuration of the wire permits radial expansion and compression of the stent; U.S. Pat. No. 4,886,062 discloses that the stent can be delivered percutaneously and expanded in situ using a balloon catheter.
  • [0009]
    U.S. Pat. No. 4,733,665 discloses an expandable intraluminal graft which is constituted by a tubular member formed from a plurality of intersecting elongate members which permit radial expansion and compression of the stent.
  • [0010]
    EP-A-0556850 discloses an intraluminal stent which is constituted by a sinuous wire formed into a helix; juxtaposed apices of the wire are secured to one another so that each hoop of the helix is supported by its neighboring hoops to increase the overall strength of the stent and to minimize the risk of plaque herniation; in some embodiments the stent of EP-A-0556850 further comprises a tubular graft member to form an endoluminal prosthesis.
  • [0011]
    The devices cited above are generally satisfactory for the treatment of aneurysms, stenoses and other angeological diseases at sites in continuous unbifurcated portions of arteries or veins.
  • [0012]
    Within the vasculature however it is not uncommon for stenoses to form at a vessel bifurcation. A bifurcation is an area of the vasculature or other portion of the body where a first (or parent) vessel is bifurcated into two or more branch vessels. Where a stenotic lesion or lesions form at such a bifurcation, the lesion(s) can affect only one of the vessels (i.e., either of the branch vessels or the parent vessel) two of the vessels, or all three vessels. Many prior art stents however are not wholly satisfactory for use where the site of desired application of the stent is juxtaposed or extends across a bifurcation in an artery or vein such, for example, as the bifurcation in the mammalian aortic artery into the common iliac arteries.
  • [0013]
    In the case of an abdominal aortic aneurysm (“AAA”) in the infiarenal portion of the aorta which extends into one of the common iliac arteries, the use of one of the prior art prosthesis referred to above across the bifurcation into the one iliac artery will result in obstruction of the proximal end of the other common iliac artery; by-pass surgery is therefore required to connect the one iliac artery in juxtaposition with the distal end of the prosthesis to the other blocked iliac artery. It will be appreciated by a person skilled in the art that it is desirable to avoid surgery wherever possible; the requirement for by-pass surgery associated with the use of the prior art prosthesis in juxtaposition with a bifurcation in an artery therefore constitutes a significant disadvantage.
  • [0014]
    Another example of a vessel bifurcation is the left and right common carotid arteries. These arteries are the principal arteries of the head and neck. Both of the common carotid arteries are quite similar and divide at a carotid bifurcation or bulb into an external carotid artery and an internal carotid artery. In the region of the carotid bulb and the ostium of the internal carotid artery, stenoses present a particular problem for carotid stenting due to the large tapering of the vessel interior from the common carotid artery (both the left and the right) to the internal carotid artery. The region of the carotid bifurcation or bulb happens to be where stenoses most often occur, particularly in the region of the ostium to the internal carotid artery in both of the carotid arteries.
  • [0015]
    Embodiments of the present invention relate to endoluminal prosthesis (stents) that may be utilized in the region of a bifurcation of vessels. The present invention also embraces stent connecting means for connecting a stent (e.g. a stent which forms part of an endoluminal prosthesis or bifurcated stent) to another stent or portion thereof. Some embodiments of the invention are directed to designs of bifurcated stents and their method of manufacture, as well as apparatuses and methods for introducing prostheses to the vasculature and methods of treating angeological diseases.
  • [0016]
    All US patents and applications and all other published documents mentioned anywhere in this application are incorporated herein by reference in their entirety.
  • [0017]
    Without limiting the scope of the invention a brief summary of some of the claimed embodiments of the invention is set forth below. Additional details of the summarized embodiments of the invention and/or additional embodiments of the invention may be found in the Detailed Description of the Invention below.
  • [0018]
    A brief abstract of the technical disclosure in the specification is provided as well only for the purposes of complying with 37 C.F.R. 1.72. The abstract is not intended to be used for interpreting the scope of the claims.
  • BRIEF SUMMARY OF THE INVENTION
  • [0019]
    The present invention includes many different embodiments. Various embodiments of the invention are directed to designs of bifurcated stents and/or the methods and apparatuses utilized to deliver a bifurcated stent to a bifurcation site.
  • [0020]
    In at least one embodiment, the invention is directed to a bifurcated stent delivery system that includes a unique catheter assembly having a primary and secondary guide wire wherein the secondary guide wire diverges away from the primary guide wire through a split in the catheter housing. The split allows the catheter to deliver a bifurcated stent center first.
  • [0021]
    The bifurcated stent is an embodiment of the invention that comprises a primary stent section and a secondary stent section. When used with the above catheter, the primary section is delivered center first through the split in the catheter housing. The secondary stent section is then delivered into a secondary vessel according to the predelivery placement of the secondary guide wire.
  • [0022]
    The bifurcated stent may be a one piece design where the primary and secondary sections are engaged to one another prior to delivery or it may be a two-piece design where the primary and secondary sections are separate and distinct stent bodies that may be optionally engaged to one another during delivery. The primary and secondary stent sections are preferably self-expandable but may be either self-expandable or balloon expandable independent of one another.
  • [0023]
    In another embodiment of the invention a self-expandable bifurcated stent may be delivered by a catheter having a retractable outer sheath or sleeve that retains the bifurcated stent in a collapsed state. When the sheath is retracted the primary stent section is exposed to self-expand. In at least one embodiment the secondary stent section remains in the collapsed state within the expanded primary stent section until a pusher mechanism is actuated to cause the secondary stent section to self-expand.
  • [0024]
    In at least one embodiment of the invention, a catheter system is employed wherein two guide wires and at least two balloons are employed to deliver a single piece bifurcated stent. In at least one embodiment, the balloons are substantially parallel to one another and the bifurcated stent is placed over both balloons with a single balloon extending into each section of the bifurcated stent. As a result, the stent branches may be independently guided and expanded. Where a portion of the stent is disposed about both balloons, in some embodiments the balloons may be linked together with a restrictive collar or band of material that will limit the expandability of the balloons to prevent the stent from being over expanded, however in other embodiments the collar may be omitted.
  • [0025]
    In some embodiments of the invention the catheter may also employ two angioplasty balloons that are initially advanced to the bifurcation site prior to stent delivery.
  • [0026]
    In at least one embodiment of the invention the bifurcated stent to be delivered is a one piece bifurcation stent comprising a primary stent section and a secondary stent section, the secondary stent section is linked to the primary stent section with one or more flexible linkage members. In at least one embodiment at least four linkage members connect the stent sections. Preferably, the flexible members are substantially S-shaped and/or are selectively annealed.
  • [0027]
    In at least one embodiment, the invention is directed to a single piece bifurcated stent wherein the primary stent section and the secondary stent section are engaged together by a linkage which allows the bifurcated stent to form distinct support structures on either side of the carina of a bifurcation. Preferably, the linkage comprises at least one struts or connecting members that is shared by both stent sections. In at least one embodiment the linkage is constructed from a selectively annealed metal or other material.
  • [0028]
    In the various embodiments of the invention portions of a given catheter and/or stent may include radiopaque materials to aid in visual inspection and/or placement of the devices such as during fluoroscopy.
  • [0029]
    Additional details and/or embodiments of the invention are discussed below.
  • BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
  • [0030]
    A detailed description of the invention is hereafter described with specific reference being made to the drawings.
  • [0031]
    FIG. 1 is a side view of a distal portion of a stent delivery catheter positioned at a vessel bifurcation.
  • [0032]
    FIG. 2 is a side view of the catheter of FIG. 1 shown during initial delivery of a primary stent section of a bifurcated stent.
  • [0033]
    FIG. 3 is a side view of the catheter and bifurcated stent of FIG. 2 where the primary stent section is shown in the deployed state and a secondary stent section is shown in a predeployed state.
  • [0034]
    FIG. 4 is a side view of the catheter and bifurcated stent of FIG. 3 shown during initial delivery of the secondary stent section.
  • [0035]
    FIG. 5 is an enlarged side view of the catheter and stent shown in FIG. 4 wherein the primary and secondary stent sections are both shown in a deployed state.
  • [0036]
    FIG. 6 is a side view of a bifurcated stent delivery system that includes two substantially parallel balloons and guide wires.
  • [0037]
    FIG. 7 is a side view of a bifurcated stent delivery system wherein the catheter includes a restrictive band where the stent is disposed about both balloons.
  • [0038]
    FIG. 8 is a side view of a stent delivery system wherein the system includes a pair of angioplasty balloons.
  • [0039]
    FIG. 9 is a side view of the system of FIG. 6 is shown being positioned at a bifurcation site prior to stent delivery.
  • [0040]
    FIG. 10 is a side view of the system of claim 9 wherein a first balloon is shown inflated and a primary stent section is shown in an expanded state.
  • [0041]
    FIG. 11 is a side view of the system of claim 10 wherein a second balloon is shown inflated and a secondary stent section is shown in an expanded state.
  • [0042]
    FIG. 12 is a side view of the system shown in FIG. 11 wherein both balloons are inflated.
  • [0043]
    FIG. 13 is a side view of the system of claim 12 wherein the balloons are shown in an uninflated state prior to stent delivery and the sections of the bifurcated stent are shown in a deployed state.
  • [0044]
    FIG. 14 is an enlarged side view of a bifurcated stent wherein the stent sections are connected by one or more linkage members.
  • [0045]
    FIG. 15 is an enlarged side view of a bifurcated stent wherein the stent sections are connected by one or more linkage members.
  • [0046]
    FIG. 16 is a side view of a bifurcated stent wherein the stent sections are connected by an actuated linkage assembly.
  • [0047]
    FIG. 17 is a side view of a bifurcated stent wherein the primary stent section does not extend substantially beyond the carina when deployed.
  • DETAILED DESCRIPTION OF THE INVENTION
  • [0048]
    As indicated above the present invention includes many different embodiments. In some embodiments the invention is directed to various designs of bifurcated stents, their delivery systems and methods of use.
  • [0049]
    In FIG. 1 an embodiment of the invention is shown which comprises a bifurcated stent delivery system shown generally at 100. System 100 includes a catheter 10 that is advanced to a bifurcation site 20 along a primary guide wire 12 and a secondary guide wire 14. In use, the primary guide wire 12 and secondary guide wire 14 are advanced into a body lumen or vessel an advanced into the primary vessel 22. At the bifurcation site 20 the secondary guide wire 14 is directed into a secondary vessel 24 causing the guide wires 12 and 14 to diverge about the carina 26. Catheter 10 is advanced along the shared path of the guide wires 12 and 14 until it reaches the carina 26.
  • [0050]
    In order to accommodate the divergent path of the secondary guide wire 14, the catheter 10 includes a spilt area 30 where the secondary guide wire 14 exits the catheter 10. The spilt area 30 is a gap between two portions of the outer housing 32 of the catheter 10. The housing 32 may be characterized as a sheath, sleeve, sock or any other assembly suitable for retaining a stent in its collapsed state onto a stent receiving region of a catheter. Some examples of such stent retaining devices are described in U.S. Pat. No. 4,950,227 to Savin et al.; U.S. Pat. No. 5,403,341 to Solar; U.S. Pat. No. 5,108,416 to Ryan et al.; U.S. Pat. No. 5,968,069 to Dusbabek et al.; U.S. Pat. No. 6,068,634, to Cornelius et al.; U.S. Pat. No. 5,571,168; U.S. Pat. No. 5,733,267; U.S. Pat. No. 5,772,669; and U.S. Pat. No. 5,534,007 all of which are incorporated herein by reference in their entirety.
  • [0051]
    In the embodiment shown in FIG. 1, the housing 32 comprises a distal sleeve 34 and a proximal sleeve 36. As is more clearly shown in FIG. 2, sleeves 34 and 36 overlay a stent retaining region 38 of the catheter 10. Sleeves 34 and 36 may be self-retracting or include one or more pullback mechanisms (not-shown) such as are described in U.S. Pat. No. 5,571,135 and U.S. Pat. No. 5,445,646 both of which are incorporated herein by reference in their entirety.
  • [0052]
    In FIG. 1 the sleeves 34 and 36 overlay the bifurcated stent 50, shown in FIG. 2, which is disposed about a stent retaining region 38. Stent retaining region 38 may include a balloon or other inflatable area for use in expanding and/or seating stent 50. Stent 50 may be balloon expandable, self-expanding or a hybrid type stent.
  • [0053]
    In the embodiments shown in FIGS. 2-4 the bifurcated stent 50 comprises a primary stent section 52 and a secondary stent section 54. Preferably, both sections 52 and 54 are self-expanding stent bodies though the individual stent sections may have different expansion characteristics as desired. In addition, the sections 52 and 54 of the bifurcated stent 50 may be individual stent bodies that are separately advanced and deployed forming stent 50 once they are fully deployed, or they may be integrally formed or otherwise connected prior to their deployment.
  • [0054]
    In the embodiment shown in FIG. 2, the housing portions or sleeves 34 and 36 have been withdrawn from about the bifurcated stent 50. As the sleeves 34 and 36 are withdrawn from the primary stent section 52 will begin to radially expand in a center first manner through the split area 30. When the sleeves 34 and 36 are fully withdrawn such as is shown in FIG. 3 the primary stent section 52 is completely freed from the stent retaining region 38.
  • [0055]
    If the stent section 52 and 54 are not integral to each other or otherwise linked prior to delivery, upon expansion of the primary section 52 the secondary section may be advanced along the secondary guide wire 14 and advanced to an opening 62 in the wall 64 of the primary stent section 52. Opening 62 may be any diameter or shape but preferably is sized to accommodate the outer diameter of the secondary stent section 54 as well as the inner diameter of the secondary vessel 24.
  • [0056]
    Whether the secondary stent section 54 is engaged to the primary stent section 52 or separate therefrom prior to deployment, when the secondary stent section 54 is in position at opening 62 and the primary section 52 has been expanded, the secondary stent section 54 is then deployed into the secondary vessel 24, such as is shown in FIG. 4. The position of the stent 50 at the bifurcation site maybe visually established through the use of a radiopaque marker 90, discussed in greater detail below.
  • [0057]
    In at least one embodiment, where the secondary stent section 54 is at least partially constructed from a shape memory material, such as nitinol, the secondary stent section 54 will self expand according to a preprogrammed shape memory, such that the section both radially and longitudinally expands into the secondary vessel 24. In some embodiments, catheter 10 may include a pusher assembly 70 that is advanced along the secondary guide wire 14 to trigger expansion of the secondary stent section 54. Pusher assembly 70 may provide a stimulus which causes the section 54 to expand. Such a stimulus may be in the form of a simple mechanical engagement; delivery of an electrical current; or delivery of a predetermined temperature and/or a predetermined pH, such as by the release of a heated saline bolus. In some embodiments, a separate balloon catheter or other inflation device may be advanced along the secondary guide wire 14 to fully expand and/or seat the secondary stent section 54.
  • [0058]
    When both stent sections 52 and 54 are fully deployed, such as is shown in FIG. 5, the proximal end of the secondary stent section 54 is preferably engaged to the wall 64 of the primary stent section 52. When fully deployed the primary stent section 52 defines a primary flow path 72 and the secondary stent section defines a secondary flow path 74 that is in fluid communication with the primary flow path via opening 62.
  • [0059]
    In an alternative embodiment of the invention, such as is shown in FIG. 6, system 100 may be provided with catheter 10 that is equipped with at least two balloons, a primary balloon 80 and a secondary balloon 82, which may be utilized for expansion and/or seating stent sections 52 and 54.
  • [0060]
    In the embodiment shown in FIG. 6 the bifurcated stent 50 may be constructed from stainless steel or other material that necessitates or would benefit from balloon expansion. As with previous embodiments, the catheter 10 includes a pair of guide wires 12 and 14 which are advanced to the bifurcation site 20 and which diverge at the carina 26 with the secondary guide wire 14 advancing into the secondary vessel 24.
  • [0061]
    In the embodiment shown in FIG. 6, during most of the advancement of the catheter 10 the balloons 80 and 82 are positioned together in the substantially parallel orientation shown. However, as the catheter 10 approaches the bifurcation site 20 the distal portion 86 of secondary balloon 82 and secondary stent section 54 are directed along the secondary guide wire 14 into the secondary vessel 24 as shown in FIG. 9.
  • [0062]
    In order to ensure that the bifurcated stent will provide adequate support to the vessels 22 and 24 of the bifurcation site, and particularly to the area of the carina 26, the catheter 10 may include a radiopaque marker 90. Marker 90 allows a practitioner to advance the catheter 10 to the bifurcation site 20 and visually determine through fluoroscopy or other means that the balloons 80 and 82 and stent sections 52 and 54 are properly positioned about the carina 26.
  • [0063]
    Marker 90 may be constructed from any radiopaque material and is preferably part of the bifurcated stent 50.
  • [0064]
    Once it is determined that the stent 50 is in proper position at the bifurcation site 20, the primary balloon 80 is inflated to expand the primary stent section 52 as shown in FIG. 10. After the initial expansion of the primary stent section 52, the secondary balloon 82 is inflated to initially expand the secondary stent 54 shown in FIG. 11.
  • [0065]
    In some embodiments it may be preferable to first deflate the primary balloon 80 before inflating the secondary balloon 82. In some embodiments where balloon 80 is deflated prior to inflation of balloon 82, balloon 80 may be subsequently inflated after inflation of balloon 82 to fully expand the stent and seat it in place within the bifurcation such as is shown in FIG. 12. Alternatively, balloons 80 and 82 may be inflated simultaneously.
  • [0066]
    Once both stent sections 52 and 54 are fully expanded, the balloons 80 and 82 are deflated and with drawn from the bifurcation site 20, such as is depicted in FIG. 13
  • [0067]
    Because some bifurcated stents may be subject to distortion or damage when over expanded or subjected to high radially outward acting pressure, in some embodiments, such as shown in FIG. 7, the proximal portion 88 of balloons 80 and 82, where both balloons are contained within the primary stent section 52, the catheter 10 may employ a circumferential band 92 that will limit the expandability of the proximal portion 88 of balloons 80 and 82, thereby preventing over inflation and over expansion of the primary stent portion 54 when both balloons are inflated. Band 92 may be constructed from any minimally or non-expandable material such as polyethyleneterephthalate (PET) or stainless steel.
  • [0068]
    In some applications, it may be beneficial or necessary to conduct an angioplasty procedure prior to insertion of the bifurcated stent 50. As a result, in at least one embodiment of the invention, an example of which is shown in FIG. 8, the catheter 10 may be equipped with a primary angioplasty balloon 94 and a secondary angioplasty balloon 96. In practice balloons 94 and 96 may be initially advanced to the bifurcation site 20 along guide wires 12 and 14 respectively. Upon reaching the bifurcation site 20, the balloons 94 and 96 may be inflated to reduce any stenosis or blockage 98 that may be present. After the blockage 98 is reduced, the balloons 94 and 96 may be deflated and advanced along the guide wires 12 and 14 into the respective vessels 22 and 24 thereby allowing balloons 80 and 82 to be positioned at the bifurcation site 20 to delivery the bifurcated stent 50.
  • [0069]
    In the embodiments shown in FIGS. 6-13, the bifurcated stent 50 may be a single piece design, where sections 52 and 54 are engaged to one another prior to and after delivery; or the stent 50 may be a two-piece design where both sections 52 and 54 are independent stent bodies that are separate prior to delivery and which may continue to be separate or which may become engaged to one another during or after delivery.
  • [0070]
    In embodiments where the stent 50 is a one-piece design, the stent sections may be engaged together by one or more linkage member 102 such as are shown in FIGS. 14-16. In FIGS. 14 and 15 the sections 52 and 54 are connected by at least 4 linkage members 102. In at least one embodiment, the sections 52 and 54 are connected by at least 8 linkage members 102. Linkage members 102 may be characterized as struts or connecting members 104 that are shared between sections 52 and 54. In a preferred embodiment, the members 102 are selectively annealed to provide the bifurcated stent 50 with improved flexibility between sections 52 and 54. By selectively annealing the members 102, the secondary stent section 52 may be articulated relative to the primary stent section 54 such that the bifurcated stent sections 52 and 54 may be provided with an angular relationship of about 90 degrees, indicated at reference numeral 106 in FIG. 15, or a more acute angle 108 shown in FIG. 14. By providing a bifurcated stent 50 that has sections 52 and 54 that may be oriented at a variety of angles, a single stent may be used to address a variety of different angular relationships between vessels of various bifurcation sites within a body. Preferably, the angular relationship between sections 52 and 54 defines an angle of about 10 degrees to about 120 degrees.
  • [0071]
    In at least one embodiment, the linkage members 102 are provided with a curvilinear or S-shaped configuration such as is best shown in FIG. 15. The S-shape of the linkage members aid in providing the bifurcated stent 50 with the ability to articulate about vessel junctions of various angles.
  • [0072]
    In at least one embodiment, shown in FIG. 16 the sections 52 and 54 of a bifurcated stent 50 are linked by a single linkage member 102. When inserted at a bifurcation site 20, the single linkage member is positioned at the carina 26 and acts as a hinge to allow the sections 52 and 54 to be disposed about the carina 26.
  • [0073]
    In at least one embodiment of the invention shown in FIG. 17, stent 50 includes a primary stent section 52 which does not extend distally beyond the carina 26. As a result the stent 50 may be advanced and positioned at the bifurcation site 20 by a singe guide wire 14 which extends into the secondary branch 24. Use of a marker 90 allows a practitioner to position the stent 50 by abutting the marker adjacent to the carina 26 and deploying the stent as shown. The stent 50 may include sections that are either balloon expandable, self-expandable, or hybrid expandable as desired. In the embodiment shown, primary stent section 52 is balloon expandable, and secondary stent section 54 is self-expandable.
  • [0074]
    In addition to being directed to the specific combinations of features claimed below, the invention is also directed to embodiments having other combinations of the dependent features claimed below and other combinations of the features described above.
  • [0075]
    The above disclosure is intended to be illustrative and not exhaustive. This description will suggest many variations and alternatives to one of ordinary skill in this art. All these alternatives and variations are intended to be included within the scope of the claims where the term “comprising” means “including, but not limited to”. Those familiar with the art may recognize other equivalents to the specific embodiments described herein which equivalents are also intended to be encompassed by the claims.
  • [0076]
    Further, the particular features presented in the dependent claims can be combined with each other in other manners within the scope of the invention such that the invention should be recognized as also specifically directed to other embodiments having any other possible combination of the features of the dependent claims. For instance, for purposes of claim publication, any dependent claim which follows should be taken as alternatively written in a multiple dependent form from all prior claims which possess all antecedents referenced in such dependent claim if such multiple dependent format is an accepted format within the jurisdiction (e.g. each claim depending directly from claim 1 should be alternatively taken as depending from all previous claims). In jurisdictions where multiple dependent claim formats are restricted, the following dependent claims should each be also taken as alternatively written in each singly dependent claim format which creates a dependency from a prior antecedent-possessing claim other than the specific claim listed in such dependent claim below.
Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
US7523 *30 Jul 1850 Machinery fob turning out wooden bowls
US10485 *31 Ene 1854 Improved machine for paging books
US10489 *7 Feb 1854 barrows
US16719 *3 Mar 1857 Machine fob cutting- pasteboard foe
US27307 *28 Feb 1860 Convebtibtg reciprocating into eotary motion
US27463 *13 Mar 1860 George e
US28922 *26 Jun 1860 Window-curtain slide
US32266 *7 May 1861 Improvement in rakes for harvesters
US47134 *4 Abr 1865 Improvement in churns
US48531 *4 Jul 1865 dewhubst
US74595 *18 Feb 1868 rickabd
US135715 *11 Feb 1873 Improvement in tool-holders
US135863 *11 Feb 1873 Improvement in scraper attachments for plows
US139697 *14 Dic 187310 Jun 1873Woodbuen saeven Wheel CompanyImprovement in wheels for vehicles
US139699 *19 Feb 187310 Jun 1873 Improvement in water-wheels
US149342 *6 Dic 18737 Abr 1874 Improvement in cotton-presses
US158385 *21 Ago 18745 Ene 1875 Improvement in machines for trimming boot and shoe heel counters
US160284 *29 Ene 18752 Mar 1875 Improvement in window-sills
US174273 *8 Dic 187529 Feb 1876 Improvement in combination-locks
US189409 *13 Feb 187510 Abr 1877 Improvement in dental engines
US479557 *16 Mar 189226 Jul 1892 Electroplating toy apparatus
US479730 *10 Sep 189126 Jul 1892The Lane manufacturing CompanyJohn b
US647148 *21 Sep 189910 Abr 1900Frederick MyersCar wheel and axle.
US751752 *23 Mar 19039 Feb 1904 Press
US783873 *24 May 190428 Feb 1905William LeiningerStove-protector.
US880949 *17 Sep 19073 Mar 1908W F Bossert Mfg CompanySignal-blade clasp.
US883384 *25 Oct 190731 Mar 1908Isidor Medford BremerDog-collar.
US1031329 *11 Mar 19082 Jul 1912Dick Co AbPrinting-machine.
US1031330 *8 Jul 19082 Jul 1912Milton D JonesRail-joint.
US1861769 *27 Jun 19307 Jun 1932Wappler Reinhold HCatheterizing instrument
US2678508 *9 Jun 195018 May 1954Bucyrus Erie CoAdjustable bulldozer
US2740346 *25 Sep 19513 Abr 1956Allis Chalmers Mfg CoTractor plow
US2756173 *18 Dic 195224 Jul 1956Bjorksten Res Lab IncElectrically conductive plastic article
US2970883 *24 Dic 19567 Feb 1961American Enka CorpManufacture of viscose rayon
US4454887 *12 Abr 198219 Jun 1984Krueger ChristianMedical instruments for introduction into the respiratory tract of a patient
US4896670 *19 Abr 198830 Ene 1990C. R. Bard, Inc.Kissing balloon catheter
US4905667 *10 May 19886 Mar 1990Ernst FoersterApparatus for endoscopic-transpapillary exploration of biliary tract
US4983166 *16 Abr 19908 Ene 1991Yoshiharu YamawakiBalloon catheter and method of use of the same
US4994071 *22 May 198919 Feb 1991Cordis CorporationBifurcating stent apparatus and method
US5219355 *2 Oct 199115 Jun 1993Parodi Juan CBalloon device for implanting an aortic intraluminal prosthesis for repairing aneurysms
US5320605 *22 Ene 199314 Jun 1994Harvinder SahotaMulti-wire multi-balloon catheter
US5599300 *12 May 19954 Feb 1997Arrow Precision Products, Inc.Method for electrosurgically obtaining access to the biliary tree with an adjustably positionable needle-knife
US5607444 *9 Jul 19964 Mar 1997Advanced Cardiovascular Systems, Inc.Ostial stent for bifurcations
US5613980 *22 Dic 199425 Mar 1997Chauhan; Tusharsindhu C.Bifurcated catheter system and method
US5617878 *31 May 19968 Abr 1997Taheri; Syde A.Stent and method for treatment of aortic occlusive disease
US5632762 *9 Nov 199527 May 1997Hemodynamics, Inc.Ostial stent balloon
US5632763 *18 Ene 199627 May 1997Cordis CorporationBifurcated stent and method for implanting same
US5639278 *13 Nov 199517 Jun 1997Corvita CorporationExpandable supportive bifurcated endoluminal grafts
US5720735 *12 Feb 199724 Feb 1998Dorros; GeraldBifurcated endovascular catheter
US5749825 *18 Sep 199612 May 1998Isostent, Inc.Means method for treatment of stenosed arterial bifurcations
US5749890 *3 Dic 199612 May 1998Shaknovich; AlexanderMethod and system for stent placement in ostial lesions
US5755734 *29 Abr 199726 May 1998Medinol Ltd.Bifurcated stent and method of making same
US5755735 *30 Abr 199726 May 1998Medinol Ltd.Bifurcated stent and method of making same
US5755770 *31 Ene 199526 May 1998Boston Scientific CorporatiionEndovascular aortic graft
US5755771 *3 Nov 199526 May 1998Divysio Solutions UlcExpandable stent and method of delivery of same
US5755772 *26 Abr 199626 May 1998Medtronic, Inc.Radially expansible vascular prosthesis having reversible and other locking structures
US5755773 *4 Jun 199626 May 1998Medtronic, Inc.Endoluminal prosthetic bifurcation shunt
US5755778 *16 Oct 199626 May 1998Nitinol Medical Technologies, Inc.Anastomosis device
US5776101 *11 Ene 19967 Jul 1998Schneider (Europe) A.G.Balloon dilatation catheter
US5782906 *24 Oct 199621 Jul 1998Ethicon, Inc.Combination arterial stent
US5855600 *1 Ago 19975 Ene 1999Inflow Dynamics Inc.Flexible implantable stent with composite design
US5858777 *13 Sep 199612 Ene 1999Geron CorporationMethods and reagents for regulating telomere length and telomerase activity
US5893887 *14 Oct 199713 Abr 1999Iowa-India Investments Company LimitedStent for positioning at junction of bifurcated blood vessel and method of making
US5906640 *2 May 199725 May 1999Divysio Solutions UlcBifurcated stent and method for the manufacture and delivery of same
US5916263 *13 Jun 199629 Jun 1999Boston Scientific Technology, Inc.Bifurcated endoluminal prosthesis
US6013054 *28 Abr 199711 Ene 2000Advanced Cardiovascular Systems, Inc.Multifurcated balloon catheter
US6016810 *15 Abr 199825 Ene 2000Boston Scientific CorporationEndovasular aortic graft
US6017324 *20 Oct 199825 Ene 2000Tu; Lily ChenDilatation catheter having a bifurcated balloon
US6017363 *24 Feb 199825 Ene 2000Cordis CorporationBifurcated axially flexible stent
US6030414 *13 Nov 199729 Feb 2000Taheri; Syde A.Variable stent and method for treatment of arterial disease
US6033434 *7 Jun 19967 Mar 2000Ave Galway LimitedBifurcated endovascular stent and methods for forming and placing
US6033435 *3 Nov 19977 Mar 2000Divysio Solutions UlcBifurcated stent and method for the manufacture and delivery of same
US6039758 *22 Dic 199721 Mar 2000Endovascular Technologies, Inc.Method for intraluminally deploying a bifurcated graft
US6045557 *10 Nov 19964 Abr 2000Baxter International Inc.Delivery catheter and method for positioning an intraluminal graft
US6048360 *25 Mar 199811 Abr 2000Endotex Interventional Systems, Inc.Methods of making and using coiled sheet graft for single and bifurcated lumens
US6048361 *14 May 199811 Abr 2000Jomed Implantate GmbhBalloon catheter and multi-guidewire stent for implanting in the region of branched vessels
US6051020 *29 Oct 199718 Abr 2000Boston Scientific Technology, Inc.Bifurcated endoluminal prosthesis
US6056722 *18 Sep 19972 May 2000Iowa-India Investments Company Limited Of DouglasDelivery mechanism for balloons, drugs, stents and other physical/mechanical agents and methods of use
US6056775 *29 May 19972 May 2000Ave Galway LimitedBifurcated endovascular stents and method and apparatus for their placement
US6059824 *23 Dic 19989 May 2000Taheri; Syde A.Mated main and collateral stent and method for treatment of arterial disease
US6068655 *5 Jun 199730 May 2000Seguin; JacquesEndoprosthesis for vascular bifurcation
US6168621 *29 May 19982 Ene 2001Scimed Life Systems, Inc.Balloon expandable stent with a self-expanding portion
US6183509 *3 May 19966 Feb 2001Alain DibieEndoprosthesis for the treatment of blood-vessel bifurcation stenosis and purpose-built installation device
US6197046 *20 Sep 19996 Mar 2001Endovascular Technologies, Inc.Method for deploying an endovascular graft having a bifurcation
US6197049 *17 Feb 19996 Mar 2001Endologix, Inc.Articulating bifurcation graft
US6210380 *4 Abr 20003 Abr 2001Advanced Cardiovascular Systems, Inc.Bifurcated catheter assembly
US6210429 *14 Ene 19983 Abr 2001Advanced Stent Technologies, Inc.Extendible stent apparatus
US6210431 *10 Dic 19993 Abr 2001John A. PowerOstial bifurcation lesion stenting catheter
US6210433 *17 Mar 20003 Abr 2001LARRé JORGE CASADOStent for treatment of lesions of bifurcated vessels
US6217527 *30 Sep 199817 Abr 2001Lumend, Inc.Methods and apparatus for crossing vascular occlusions
US6221080 *10 Dic 199924 Abr 2001John A. PowerBifurcation lesion stenting catheter
US6221090 *23 Sep 199924 Abr 2001Advanced Cardiovascular Systems, Inc.Stent delivery assembly
US6221098 *9 Dic 199924 Abr 2001Advanced Cardiovascular Systems, Inc.Stent and catheter assembly and method for treating bifurcations
US6231563 *28 Ene 199715 May 2001Baxter International Inc.Directional catheter
US6231598 *24 Sep 199815 May 2001Med Institute, Inc.Radially expandable stent
US6238430 *22 Sep 199929 May 2001Vascular Architects, Inc.Catheter assembly with controlled release endoluminal prosthesis and method for placing
US6248122 *26 Feb 199919 Jun 2001Vascular Architects, Inc.Catheter with controlled release endoluminal prosthesis
US6251133 *5 May 199826 Jun 2001Medinol Ltd.Bifurcated stent with improved side branch aperture and method of making same
US6334864 *17 May 20001 Ene 2002Aga Medical Corp.Alignment member for delivering a non-symmetric device with a predefined orientation
Citada por
Patente citante Fecha de presentación Fecha de publicación Solicitante Título
US76781424 Ago 200416 Mar 2010Boston Scientific Scimed, Inc.Extendible stent apparatus
US77317418 Sep 20058 Jun 2010Boston Scientific Scimed, Inc.Inflatable bifurcation stent
US77446434 May 200629 Jun 2010Boston Scientific Scimed, Inc.Displaceable stent side branch structure
US775863421 Mar 200720 Jul 2010Boston Scientific Scimed, Inc.Bifurcated stent and delivery system
US77668937 Dic 20053 Ago 2010Boston Scientific Scimed, Inc.Tapered multi-chamber balloon
US781567510 Mar 200819 Oct 2010Boston Scientific Scimed, Inc.Stent with protruding branch portion for bifurcated vessels
US78332646 Mar 200616 Nov 2010Boston Scientific Scimed, Inc.Bifurcated stent
US783326628 Nov 200716 Nov 2010Boston Scientific Scimed, Inc.Bifurcated stent with drug wells for specific ostial, carina, and side branch treatment
US784208127 Nov 200630 Nov 2010Boston Scientific Scimed, Inc.Stent with spiral side-branch
US784208230 Ago 200730 Nov 2010Boston Scientific Scimed, Inc.Bifurcated stent
US7846194 *1 Jun 20067 Dic 2010William A. Cook Australia Pty. Ltd.Iliac artery stent graft
US785072515 Jun 200614 Dic 2010Boston Scientific Scimed, Inc.Extendible stent apparatus
US789227926 May 200922 Feb 2011Boston Scientific Scimed, Inc.Extendible stent apparatus
US792275820 Jun 200712 Abr 2011Boston Scientific Scimed, Inc.Nesting twisting hinge points in a bifurcated petal geometry
US79511915 Sep 200731 May 2011Boston Scientific Scimed, Inc.Bifurcated stent with entire circumferential petal
US795119225 Ago 200931 May 2011Boston Scientific Scimed, Inc.Stent with protruding branch portion for bifurcated vessels
US795966816 Ene 200714 Jun 2011Boston Scientific Scimed, Inc.Bifurcated stent
US795966912 Sep 200714 Jun 2011Boston Scientific Scimed, Inc.Bifurcated stent with open ended side branch support
US800752823 May 200730 Ago 2011Boston Scientific Scimed, Inc.Bifurcated stent
US80168781 Jun 200913 Sep 2011Boston Scientific Scimed, Inc.Bifurcation stent pattern
US803410025 Nov 200311 Oct 2011Endologix, Inc.Graft deployment system
US80387068 Sep 200518 Oct 2011Boston Scientific Scimed, Inc.Crown stent assembly
US80433668 Sep 200525 Oct 2011Boston Scientific Scimed, Inc.Overlapping stent
US811886128 Mar 200721 Feb 2012Boston Scientific Scimed, Inc.Bifurcation stent and balloon assemblies
US81423953 Ago 201027 Mar 2012Boston Scientific Scimed, Inc.Tapered multi-chamber balloon
US816792525 Mar 20101 May 2012Endologix, Inc.Single puncture bifurcation graft deployment system
US81975361 Nov 200612 Jun 2012Cordis CorporationMethod for placing a medical device at a bifurcated conduit
US82064292 Nov 200626 Jun 2012Boston Scientific Scimed, Inc.Adjustable bifurcation catheter incorporating electroactive polymer and methods of making and using the same
US821626712 Sep 200610 Jul 2012Boston Scientific Scimed, Inc.Multilayer balloon for bifurcated stent delivery and methods of making and using the same
US823604011 Abr 20087 Ago 2012Endologix, Inc.Bifurcated graft deployment systems and methods
US82413493 Feb 201114 Ago 2012Boston Scientific Scimed, Inc.Extendible stent apparatus
US8257419 *1 Nov 20064 Sep 2012Cordis CorporationApparatus for treating a bifurcated region of a conduit
US82574254 Dic 20064 Sep 2012Boston Scientific Scimed, Inc.Stent with protruding branch portion for bifurcated vessels
US827750121 Dic 20072 Oct 2012Boston Scientific Scimed, Inc.Bi-stable bifurcated stent petal geometry
US82982787 Mar 200630 Oct 2012Boston Scientific Scimed, Inc.Bifurcated stent with improvement securement
US829828014 Dic 200430 Oct 2012Boston Scientific Scimed, Inc.Stent with protruding branch portion for bifurcated vessels
US831785526 May 200527 Nov 2012Boston Scientific Scimed, Inc.Crimpable and expandable side branch cell
US834321114 Dic 20051 Ene 2013Boston Scientific Scimed, Inc.Connectors for bifurcated stent
US835719211 Mar 201122 Ene 2013Endologix, Inc.Bifurcated graft deployment systems and methods
US83986953 Nov 200619 Mar 2013Boston Scientific Scimed, Inc.Side branch stenting system using a main vessel constraining side branch access balloon and side branching stent
US84146113 Nov 20069 Abr 2013Boston Scientific Scimed, Inc.Main vessel constraining side-branch access balloon
US842559031 May 201123 Abr 2013Boston Scientific Scimed, Inc.Stent with protruding branch portion for bifurcated vessels
US843528414 Dic 20057 May 2013Boston Scientific Scimed, Inc.Telescoping bifurcated stent
US848072826 May 20059 Jul 2013Boston Scientific Scimed, Inc.Stent side branch deployment initiation geometry
US849164615 Jul 201023 Jul 2013Endologix, Inc.Stent graft
US852393112 Ene 20073 Sep 2013Endologix, Inc.Dual concentric guidewire and methods of bifurcated graft deployment
US855695522 Jun 201215 Oct 2013Boston Scientific Scimed, Inc.Adjustable bifurcation catheter incorporating electroactive polymer and methods of makings and using the same
US864737630 Mar 200711 Feb 2014Boston Scientific Scimed, Inc.Balloon fold design for deployment of bifurcated stent petal architecture
US874745631 Dic 200810 Jun 2014Boston Scientific Scimed, Inc.Bifurcation stent delivery system and methods
US876481218 Ene 20131 Jul 2014Endologix, Inc.Bifurcated graft deployment systems and methods
US880835029 Feb 201219 Ago 2014Endologix, Inc.Catheter system and methods of using same
US882156416 Feb 20122 Sep 2014Endologix, Inc.Stent graft
US893234029 May 200813 Ene 2015Boston Scientific Scimed, Inc.Bifurcated stent and delivery system
US89563769 Sep 201117 Feb 2015The Spectranetics CorporationReentry catheter and method thereof
US89989369 Sep 20117 Abr 2015The Spectranetics CorporationReentry catheter and method thereof
US939310016 Nov 201119 Jul 2016Endologix, Inc.Devices and methods to treat vascular dissections
US940899829 Dic 20149 Ago 2016The Spectranetics CorporationReentry catheter and method thereof
US942734014 Feb 200730 Ago 2016Boston Scientific Scimed, Inc.Stent with protruding branch portion for bifurcated vessels
US949229713 Jun 201215 Nov 2016Boston Scientific Scimed, Inc.Multilayer balloon for bifurcated stent delivery and methods of making and using the same
US954983518 Ago 201424 Ene 2017Endologix, Inc.Catheter system and methods of using same
US957910330 Abr 201028 Feb 2017Endologix, Inc.Percutaneous method and device to treat dissections
US968737414 Dic 201627 Jun 2017Endologix, Inc.Catheter system and methods of using same
US97007019 Jul 201211 Jul 2017Endologix, Inc.Catheter system and methods of using same
US975726216 Jul 201312 Sep 2017Endologix, Inc.Stent graft
US977596925 Feb 20153 Oct 2017The Spectranetics CorporationReentry catheter and method thereof
US981486229 Jun 201214 Nov 2017The Spectranetics CorporationReentry catheter and method thereof
US20040267352 *17 Mar 200430 Dic 2004Davidson Charles J.Stent with protruding branch portion for bifurcated vessels
US20060036315 *6 Jun 200516 Feb 2006Advanced Stent Technologies, Inc.Stent with protruding branch portion for bifurcated vessels
US20060085061 *4 Nov 200520 Abr 2006Vardi Gil MExtendible stent apparatus and method for deploying the same
US20060241740 *15 Jun 200626 Oct 2006Advanced Stent Technologies, Inc.Extendible stent apparatus
US20060287704 *1 Jun 200621 Dic 2006William A. Cook Australia Pty. Ltd.Iliac artery stent graft
US20070032855 *10 Oct 20068 Feb 2007Advanced Stent Technologies, Inc.Extendible stent apparatus
US20070050016 *29 Ago 20051 Mar 2007Boston Scientific Scimed, Inc.Stent with expanding side branch geometry
US20070055356 *8 Sep 20058 Mar 2007Boston Scientific Scimed, Inc.Inflatable bifurcation stent
US20070112419 *27 Nov 200617 May 2007Boston Scientific Scimed, Inc.Stent with spiral side-branch
US20070129749 *7 Dic 20057 Jun 2007Boston Scientific Scimed, Inc.Tapered multi-chamber balloon
US20070142904 *20 Dic 200521 Jun 2007Boston Scientific Scimed, Inc.Bifurcated stent with multiple locations for side branch access
US20070173920 *21 Mar 200726 Jul 2007Boston Scientific Scimed, Inc.Bifurcation stent delivery system
US20070208414 *6 Mar 20066 Sep 2007Shawn SorensonTapered strength rings on a bifurcated stent petal
US20070208415 *6 Mar 20066 Sep 2007Kevin GrotheimBifurcated stent with controlled drug delivery
US20070219611 *1 Nov 200620 Sep 2007Matthew KreverApparatus for treating a bifurcated region of a conduit
US20070225798 *23 Mar 200627 Sep 2007Daniel GregorichSide branch stent
US20070260304 *2 May 20068 Nov 2007Daniel GregorichBifurcated stent with minimally circumferentially projected side branch
US20080109056 *3 Nov 20068 May 2008Boston Scientific Scimed, Inc.Main vessel constraining side-branch access balloon
US20080109062 *3 Nov 20068 May 2008Boston Scientific Scimed, Inc.Side branch stenting system using a main vessel constraining side branch access balloon and side branching stent
US20080125847 *1 Nov 200629 May 2008Matthew KreverMethod for placing a medical device at a bifurcated conduit
US20080172123 *16 Ene 200717 Jul 2008Boston Scientific Scimed, Inc.Bifurcated stent
US20090259298 *11 Abr 200815 Oct 2009Kevin MayberryBifurcated graft deployment systems and methods
US20100137973 *10 Nov 20093 Jun 2010Boston Scientific Scimed, Inc.Layered Bifurcation Stent
US20100298860 *3 Ago 201025 Nov 2010Boston Scientific Scimed, Inc.Tapered multi-chamber balloon
US20110077730 *30 Sep 200931 Mar 2011Fenster Michael SBifurcated balloon stent
WO2007030159A1 *8 May 200615 Mar 2007Boston Scientific LimitedOverlapping stent
WO2007030160A1 *9 May 200615 Mar 2007Boston Scientific LimitedInflatable bifurcation stent
Clasificaciones
Clasificación de EE.UU.623/1.35
Clasificación internacionalA61F2/82, A61F2/06
Clasificación cooperativaA61F2002/9583, A61F2002/061, A61F2/97, A61F2/966, A61F2/856, A61F2250/006, A61F2002/821, A61F2/958, A61F2/954
Clasificación europeaA61F2/958, A61F2/954, A61F2/966, A61F2/856
Eventos legales
FechaCódigoEventoDescripción
6 Nov 2006ASAssignment
Owner name: BOSTON SCIENTIFIC SCIMED, INC., MINNESOTA
Free format text: CHANGE OF NAME;ASSIGNOR:SCIMED LIFE SYSTEMS, INC.;REEL/FRAME:018505/0868
Effective date: 20050101
Owner name: BOSTON SCIENTIFIC SCIMED, INC.,MINNESOTA
Free format text: CHANGE OF NAME;ASSIGNOR:SCIMED LIFE SYSTEMS, INC.;REEL/FRAME:018505/0868
Effective date: 20050101