Patents Assigned to Medinol Ltd.
  • Patent number: 7621947
    Abstract: An intravascular stent especially suited for implanting in curved arterial portions. The stent retains longitudinal flexibility after expansion. The stent is formed of intertwined meander patterns forming triangular cells. The triangular cells are adapted to provide radial support, and also to provide longitudinal flexibility after expansion. The triangular cells provide increased coverage of a vessel wall. The stent can have different portions adapted to optimize radial support or to optimize longitudinal flexibility. Loops in the stent are disposed and adapted to cooperate so that after expansion of said stent within a curved lumen, the stent is curved and cells on the outside of the curve open in length, but narrow in width whereas cells on the inside of the curve shorten in length but thicken in width to maintain a density of stent element area which much more constant than otherwise between the inside and the outside of the curve.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: November 24, 2009
    Assignee: Medinol, Ltd.
    Inventors: Jacob Richter, Gregory Pinchasik
  • Publication number: 20090234433
    Abstract: An expandable helical stent is provided, wherein the stent may be formed of an amorphous metal alloy or other non-amorphous metal with a securement. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may be formed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristic particular to that stent. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other. The nestling of the undulation of adjacent helical coils contributes to maintaining the tubular shape of the helically coiled stent.
    Type: Application
    Filed: April 22, 2009
    Publication date: September 17, 2009
    Applicant: Medinol Ltd.
    Inventor: Jacob RICHTER
  • Patent number: 7534257
    Abstract: An intravascular stent especially suited for implanting in curved arterial portions or ostial regions. The stent can include an end region which is fabricated to have a greater radial strength than the remaining axial length of the stent. Such a stent is particularly suited for use in ostial regions, which require greater support near the end of the stent. The stent alternatively can include sections adjacent the end of the stent with greater bending flexibility than the remaining axial length of the stent. Such a stent is particularly suited for use in curved arteries. The stent can also be constructed with an end that has greater radial strength and sections adjacent the end with greater bending flexibility. Such a stent prevents flaring of the stent end during insertion.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: May 19, 2009
    Assignee: Medinol Ltd.
    Inventor: Jacob Richter
  • Patent number: 7384428
    Abstract: An expandable stent suitable for implantation in a lumen is covered with a biological material. In one embodiment, biological fibers are interwoven to form a stent covering. The fibers are disposed at an angle with respect to the longitudinal axis of the stent so that when the stent is expanded, the angle increases. In another embodiment, a strip of pericardium is helically wound around a supporting stent while the stent is in a compressed state. When the stent is expanded, the strip unwinds, but maintains full coverage of the stent. Interlocking edges may be formed on the strip of pericardium to maintain full coverage of the stent.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: June 10, 2008
    Assignee: Medinol, Ltd.
    Inventor: Jacob Richter
  • Patent number: 7371255
    Abstract: A stent for insertion into a blood vessel is made from a sheet having a longitudinal axis and a first portion and a second portion. The first portion has a proximal end and a distal end and a first lateral side and a second lateral side with the lateral sides of the first portion substantially parallel to the longitudinal axis and disposed apart from each other a first distance. The second portion has a proximal end and a distal end and a first lateral side and a second lateral side with the lateral sides of the second portion substantially parallel to the longitudinal axis and disposed apart from each other a second distance that is less than the first distance. The proximal end of the second portion communicates with the distal end of the first portion. The first lateral side of the first portion is connected to the second lateral side of the first portion and the first lateral side of the second portion is connected to the second lateral side of the second portion to form the stent.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: May 13, 2008
    Assignee: Medinol Ltd.
    Inventors: Jacob Richter, Gregory Pinchasik
  • Patent number: 7314482
    Abstract: A stent and a method for fabricating the stent are disclosed. The stent has an originally flat pattern and connection points where the sides of the flat pattern are joined. The method includes the steps of a) cutting a stent pattern into a flat piece of metal thereby to produce a metal pattern, b) deforming the metal pattern so as to cause two opposing sides to meet, and c) joining the two opposing sides at least at one point. Substantially no portion of the stent projects into the lumen of the stent when the stent is expanded against the internal wall of a blood vessel.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: January 1, 2008
    Assignee: Medinol Ltd.
    Inventors: Jacob Richter, Ira Yaron
  • Patent number: 7208009
    Abstract: A stent and a method for fabricating the stent are disclosed. The stent has an originally flat pattern and connection points where the sides of the flat pattern are joined. The method includes the steps of a) cutting a stent pattern into a flat piece of metal thereby to produce a metal pattern, b) deforming the metal pattern so as to cause two opposing sides to meet, and c) joining the two opposing sides at least at one point. Substantially no portion of the stent projects into the lumen of the stent when the stent is expanded against the internal wall of a blood vessel.
    Type: Grant
    Filed: February 17, 2004
    Date of Patent: April 24, 2007
    Assignee: Medinol, Ltd.
    Inventor: Jacob Richter
  • Patent number: 7172619
    Abstract: Embodiments of a stent system include a catheter is made with only one lumen leading to a balloon. An arrangement is provided to easily lock a short wire in place at the distal end of the balloon. Multiple wires of different properties can be included in a package containing the stent and the delivery catheter, such that the physician will be able to choose the right wire tip according to the lesion and vessel treated and attach it at the distal tip of the balloon before beginning the stenting procedure.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: February 6, 2007
    Assignee: Medinol, Ltd.
    Inventor: Jacob Richter
  • Patent number: 7141062
    Abstract: An intravascular stent especially suited for implanting in curved arterial portions. The stent retains longitudinal flexibility after expansion. The stent is formed of intertwined meander patterns forming triangular cells. The triangular cells are adapted to provide radial support, and also to provide longitudinal flexibility after expansion. The triangular cells provide increased coverage of a vessel wall. The stent can have different portions adapted to optimize radial support or to optimize longitudinal flexibility. The stent can be adapted to prevent flaring of portions of the stent during insertion.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: November 28, 2006
    Assignee: Medinol, Ltd.
    Inventors: Gregory Pinchasik, Jacob Richter
  • Patent number: 7052510
    Abstract: A catheter with two balloons for implanting a stent without flaring at the ends of the stent during implantation has an outer balloon overlying an inner balloon. The length of the inner balloon is shorter than the length of the outer balloon and shorter than a stent which is mounted over both balloons. Upon inflation of the inner balloon, the inner balloon expands only the center of the stent. After the center of the stent is expanded, further application of pressure bursts the inner balloon allowing application of pressure to the outer balloon. The outer balloon is then inflated, expanding the ends of the stent.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: May 30, 2006
    Assignee: Medinol, Ltd.
    Inventor: Jacob Richter
  • Patent number: 7044963
    Abstract: An intravascular stent especially suited for implanting in curved arterial portions or ostial regions. The stent can include an end region which is fabricated to have a greater radial strength than the remaining axial length of the stent. Such a stent is particularly suited for use in ostial regions, which require greater support near the end of the stent. The stent alternatively can include sections adjacent the end of the stent with greater bending flexibility than the remaining axial length of the stent. Such a stent is particularly suited for use in curved arteries. The stent can also be constructed with an end that has greater radial strength and sections adjacent the end with greater bending flexibility. Such a stent prevents flaring of the stent end during insertion.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: May 16, 2006
    Assignee: Medinol, Ltd.
    Inventor: Jacob Richter
  • Patent number: 7033386
    Abstract: A stent and a method of making it from a wire, which method includes winding the wire on a mandrel, heating to form a coiled spring, and reversing the winding direction of the coiled spring to form the reversed coiled spring stent. The stent so formed may be reheated over a special mandrel so as to partly relax the outer portion of some or all of the stent coils. The stent may be made up of two or more sections, with adjoining section wound in opposite senses. Such a stent may be deployed by winding the stent onto a catheter, immobilizing the two ends of the wire and one or more intermediate points, bringing the stent to the location where it is to be deployed, and releasing first the intermediate point or points and then the end points. The release of the wire may be accomplished by heating the thread immobilizing the wire so that the thread breaks and releases the wire.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: April 25, 2006
    Assignee: Medinol Ltd.
    Inventors: Jacob Richter, Gregory Pinchasik
  • Patent number: 6989026
    Abstract: A stent for insertion into a blood vessel is made from a sheet having a longitudinal axis and a first portion and a second portion. The first portion has a proximal end and a distal end and a first lateral side and a second lateral side with the lateral sides of the first portion substantially parallel to the longitudinal axis and disposed apart from each other a first distance. The second portion has a proximal end and a distal end and a first lateral side and a second lateral side with the lateral sides of the second portion substantially parallel to the longitudinal axis and disposed apart from each other a second distance that is less than the first distance. The proximal end of the second portion communicates with the distal end of the first portion. The first lateral side of the first portion is connected to the second lateral side of the first portion and the first lateral side of the second portion is connected to the second lateral side of the second portion to form the stent.
    Type: Grant
    Filed: February 6, 2002
    Date of Patent: January 24, 2006
    Assignee: Medinol Ltd.
    Inventors: Jacob Richter, Gregory Pinchasik
  • Patent number: 6955687
    Abstract: A bifurcated stent for insertion into a bifurcated vessel such as a blood vessel. In one embodiment, a first sheet is formed into a first leg, a second sheet is formed into a second leg, a third sheet is formed into a stem, and the two legs are attached to the stem. In a second embodiment, a first sheet is formed into a member having a first leg and half of a stem, a second sheet is formed into a second member having a second leg and half of a stem, and the two stem halves are combined to form the bifurcated stent. In a third embodiment, the stent comprises two sections that are serially inserted and assembled within the vessel at the site of the bifurcation to be treated.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: October 18, 2005
    Assignee: Medinol Ltd.
    Inventors: Jacob Richter, Gregory Pinchasik
  • Patent number: 6887265
    Abstract: The present invention provides stents for deploying within tubular organs, blood vessels, or other tubular body lumens. Such stents comprise a stent body comprising an elastic material, the stent body being characterized by a free cylindrical shape having a free diameter. The stent body is at least partially covered with a covering that substantially prevents the stent body from expanding towards its free diameter when the stent body is placed into a diameter smaller than the free diameter. In one embodiment, the covering is a metal coating on the stent body. In another embodiment, the covering is a tube, or multiple tubes, around the stent body. Also provided is a method for deploying the stents of the present invention within tubular organs, blood vessels, or other tubular body lumens.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: May 3, 2005
    Assignee: Medinol Ltd.
    Inventors: Jacob Richter, Joseph Flomenblit, Natalia Budigina
  • Patent number: 6875228
    Abstract: An articulated stent for delivering through a bodily conduit, for example, a peripheral or coronary artery, which has one or more curved portions and for implantation therein. The articulated stent includes at least two substantially rigid segments and a flexible connector for connecting adjacent segments. The connector assumes a cylindrical configuration when relaxed and a differentially stretched and compressed curved configuration when flexed.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: April 5, 2005
    Assignee: Medinol, Ltd.
    Inventors: Gregory Pinchasik, Jacob Richter
  • Publication number: 20040260377
    Abstract: In accordance with embodiments of the present invention, a method for preparing a shape memory alloy endoprosthesis, displaying strain induced martensite phenomenon, for delivery includes inserting a shape memory alloy endoprosthesis into a delivery device, inducing a first strain within a first region of the shape memory alloy endoprosthesis, inducing a second strain within a second region of the shape memory alloy endoprosthesis, and sterilizing the delivery device while maintaining the first strain and the second strain induced within the shape memory alloy endoprosthesis. In accordance with other embodiments of the present invention, an apparatus for delivering a shape memory alloy endoprosthesis includes an inner core having a first diameter, an outer body having a second diameter greater than the first diameter, and a calibrated endcap attached to the inner core.
    Type: Application
    Filed: June 17, 2003
    Publication date: December 23, 2004
    Applicant: Medinol, Ltd.
    Inventors: Joseph Michael Flomenblit, Nathalie Boris Budigina
  • Patent number: 6821293
    Abstract: A patterned sheet having two long sides is wrapped around a mandrel. The mandrel is provided with at least one flat surface. The long sides of the sheet are secured adjacent to the flat surface of the mandrel and points along the long sides of the sheet are connected by laser welding or other connecting means. The laser beam is directed substantially perpendicular to the welding plane of the points to be welded, even if the weld points do not all lie on a single line parallel to the mandrel's longitudinal axis.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: November 23, 2004
    Assignee: Medinol Ltd.
    Inventor: Gregory Pinchasik
  • Patent number: 6796999
    Abstract: A stent is made up of a plurality of adjacent stern segments, spaced from one another. Between each two adjacent stent segments is a detachment zone that includes two articulation planes. In each articulation plane there are two connecting members, with the members in one articulation plane spaced from those in the other articulation plane about the circumference of the stent by from about 60 to 140 degrees from each other. Within each articulation plane, the two members are spaced between about 140 and 220 degrees from each other.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: September 28, 2004
    Assignee: Medinol Ltd.
    Inventor: Gregory Pinchasik
  • Patent number: 6770091
    Abstract: A bifurcated stent for insertion into a bifurcated vessel such as a blood vessel. In one embodiment, a first sheet is formed into a first leg, a second sheet is formed into a second leg, a third sheet is formed into a stem, and the two legs are attached to the stem. In a second embodiment, a first sheet is formed into a member having a first leg and half of a stem, a second sheet is formed into a second member having a second leg and half of a stem, and the two stem halves are combined to form the bifurcated stent. In a third embodiment, the stent comprises two sections that are serially inserted and assembled within the vessel at the site of the bifurcation to be treated.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: August 3, 2004
    Assignee: Medinol Ltd.
    Inventors: Jacob Richter, Gregory Pinchasik