Method Of Manufacturing Prosthetic Device Patents (Class 623/901)
  • Patent number: 7168142
    Abstract: A method of manufacturing a metallic blank into a shaped article useful as an enclosure for an implantable medical device is described. The method entails a plurality of steps in a particular order to obtain certain finish characteristics. Some of them are a surface roughness for bond ability and/or a uniform surface finish on the drawn section of the blank. The preset steps must be completed in a particular order; otherwise the desired characteristics are not provided.
    Type: Grant
    Filed: September 8, 2004
    Date of Patent: January 30, 2007
    Assignee: Greatbatch-Globe Tool, Inc.
    Inventor: Michael R. Nowaczyk
  • Patent number: 7162322
    Abstract: A system and method for manufacturing a custom prosthetic liner. The system may include a shape capture device for capturing the shape of a residual limb. The captured shape may be used to generate a 3-dimensional electronic liner model using a processor and specialized software. A 3-dimensional electronic model of the residual limb may also be produced. Preferably, an interface is provided that allows a user of the system to alter the shape and/or size of the 3-dimensional model(s) to allow the subsequently-produced liner to accommodate particular features of the residual limb. Data associated with at least the resulting 3-dimensional liner model is provided to a manufacturing facility equipped to produce a custom liner therefrom. The data may be remotely transmitted to the manufacturing facility. A positive likeness of the residual limb is created from the data associated with the 3-dimensional model(s), and is subsequently used as a mold core in the liner molding process.
    Type: Grant
    Filed: November 28, 2003
    Date of Patent: January 9, 2007
    Assignee: The Ohio Willow Wood Company
    Inventors: Robert E. Arbogast, James M. Colvin, Christopher T. Kelley, Greg Pratt
  • Patent number: 7122059
    Abstract: A coiled-sheet stent includes a tubular body having a longitudinal axis, a circumference, and a thickness, and having a size configured for introduction into a body lumen. The tubular body includes a plurality of cylindrical bands, each band including a generally zig-zag pattern defined by a series of sequential arcuate-shaped diagonal elements connected to one another and extending about the circumference. Longitudinal connectors extend between adjacent cylindrical bands. Slots are formed in the tubular body oriented about the circumference of the tubular body, thereby providing reduced thickness regions in the longitudinal connectors that have a thickness that is substantially smaller than the thickness of the cylindrical bands of the tubular body.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: October 17, 2006
    Assignee: Endotex Interventional Systems, Inc.
    Inventors: Jonathan M. Rourke, Yi Yang
  • Patent number: 7113841
    Abstract: An implant designing method to be applied to a body of bone which has a bone deficient portion, wherein the bone being substantially symmetric with respect to a plane of symmetry, includes generating three-dimensional data of the bone based on a plurality of pieces of tomographic data of the bone, and estimating a shape of a bone that is to exist at the bone deficient portion using part of the three-dimensional data corresponding to a symmetrical part of the bone deficient portion.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: September 26, 2006
    Assignee: PENTAX Corporation
    Inventors: Keita Abe, Shingo Shiotani, Motomasa Kato, Takamitsu Yoshida
  • Patent number: 7105122
    Abstract: A prosthetic socket casting device includes a base with a forward side from which an expandable bladder surrounding a central casting area extends. The bladder includes a plurality of inner expandable chambers that generally extend along the length of the bladder interior and peripherally surround the central casting area. The inner walls of the chambers are formed of a pliable, fluid impermeable relatively thin sheet material that is distendable upon pressurization of the chamber volumes. The bladder further includes an outer covering or wall formed of a material or construction that limits distention of the bladder outwardly. The chambers may be expanded using pressurized air or other fluid to constrict the central casting area in which a residuum having a settable prosthetic socket material thereon may be placed for molding and curing under pressure. The multiple expandable chambers create a desirable pressure distribution circumferentially around the central casting area.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: September 12, 2006
    Assignee: Ossur hf
    Inventor: Gudjon G. Karason
  • Patent number: 7090888
    Abstract: A method of making an ophthalmological implant by applying a layer of pharmaceutical agent and an overlying layer of a bioerodible material, a biodegradable material, a bloavailable material or a mixture thereof, the overlying layer having variable thickness and being dimensioned for prolonged release of the pharmaceutical agent from the implant as the overlying layer degrades.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: August 15, 2006
    Inventors: Michael E. Snyder, Eric M. Dobrusin
  • Patent number: 7070557
    Abstract: The present invention relates to a method of making a tissue graft material. The method includes placing body tissue and a blood component in a chamber and extruding the body tissue and blood component from an opening in the chamber to form the tissue graft material.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: July 4, 2006
    Assignee: MarcTec, LLC
    Inventor: Peter M. Bonutti
  • Patent number: 7056412
    Abstract: A prosthesis, and method for forming same, are provided which includes expanded polytetrafluoroethylene (ePTFE) tubes having angularly offset node and fibril configurations. Also, the node and fibril configurations are angularly offset from the longitudinal axes of the respective tubes, providing resistance against failure in the longitudinal direction.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: June 6, 2006
    Assignee: Scimed Life Systems, Inc.
    Inventor: Jamie S. Henderson
  • Patent number: 7058439
    Abstract: A breast prosthesis may be formed by forming an outer layer on a mold, and filling the mold with a polymerizable foaming composition. The mold may be formed by forming a computer model of the prosthesis based on scanning a patient. The computer model may be used to form a solid model. A prosthesis may be coupled to the patient by coupling at least one metallic insert to the prosthesis and at least one magnet to the patient. Alternately, the prosthesis may be formed with a retaining harness integral to the prosthesis. In still another method, the prosthesis may be coupled to a retaining device surgically implanted in the patient.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: June 6, 2006
    Assignee: ContourMed, Inc.
    Inventors: L. Daniel Eaton, John J. Miller, John L. May
  • Patent number: 7050877
    Abstract: A method for modeling an implant to be applied to a defect of a bone comprises the steps of obtaining a plurality of tomographic image data of the bone based on measurement data by MRI, producing three-dimensional image data of the bone based on the plurality of tomographic image data, and estimating a shape of a missing born that was previously present or should have been present in the defect of the bone to obtain three-dimensional data of the implant. The estimating step comprises the steps of estimating a provisional shape of the implant which has a contour conformable with the shape of a contour of periphery of the side walls of the defect at the distal surface of the bone and has a predetermined thickness; and deleting data of portions of the provisional shape of the implant that overlap the bone from the data of the provisional shape of the implant so that the three-dimensional data of the implant has an outer peripheral shape that is conformable with the shape of the side walls of the defect.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: May 23, 2006
    Assignees: PENTAX Corporation
    Inventors: Hiroshi Iseki, Keita Abe, Yoshiyuki Ogawara
  • Patent number: 7033360
    Abstract: In order to be able to ascertain the position of the bone in the body without complicated procedures in a process for the preoperative determination of the positioning data of endoprosthetic parts of a central joint relative to the bones forming the central joint, a respective outer articular point is determined by way or movement of the bones about a respective outer joint which is located at the end of the two bones facing away from the central joint. An articular point is determined for each of the two bones in the area of the central joint, and a direction characteristic for each of these bones is determined by way of a straight-line connection of the two articular points obtained in this manner for the two bones. The orientation of the endoprosthetic parts relative to this characteristic direction is then determined. Apparatus for carrying out the process is also provided.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: April 25, 2006
    Assignee: Aesculap AG & Co. KG
    Inventors: Philippe Cinquin, Stephane Lavallee, Francois Leitner, Richard Minfelde, Frederic Picard, Dominique Saragaglia, Hans-Joachim Schulz
  • Patent number: 6991444
    Abstract: A prosthetic socket is made by wrapping water-soaked plaster bandages around a residual limb or around a prosthetic liner within which is disposed a residual limb, and positioning a vacuum wick in overlying relation to the plaster bandages. The residual limb, prosthetic liner, plaster bandages, and vacuum wick means are then inserted into a vacuum bladder. The vacuum bladder is sealed and a predetermined vacuum is applied internally to the bladder until the plaster hardens into a negative cast. The residual limb is manipulated through the vacuum bladder to modify the geometry of the plaster before the plaster hardens. The negative cast is removed from the residual limb and a positive cast is produced by pouring plaster into the negative cast. A thermoplastic sheet is thermoformed over the positive cast or a carbon-epoxy matrix is laminated over the positive cast. This eliminates reduction and modification of a hard positive cast.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: January 31, 2006
    Inventor: Aldo A. Laghi
  • Patent number: 6979348
    Abstract: The present invention provides a method of forming a drug-polymer coated stent. A polymeric coating is applied onto at least a portion of a stent framework and dried. A jet of heated gas is directed towards excess coating portions of the dried polymeric coating. The excess coating portions, which extend into apertures of the stent framework, are removed from the apertures of the stent framework by reflowing the polymeric coating with the directed jet of heated gas. A drug-polymer coated stent with a reflowed drug-polymer coating and a system for treating a vascular condition are also disclosed.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: December 27, 2005
    Assignee: Medtronic Vascular, Inc.
    Inventor: Rangarajan Sundar
  • Patent number: 6974472
    Abstract: Disclosed herein is a flexible self-expandable stent using shape memory alloy for expanding stenosal portions and method and apparatus for fabricating the same.
    Type: Grant
    Filed: March 18, 2002
    Date of Patent: December 13, 2005
    Assignee: Taewoong Medical Co., Ltd.
    Inventors: Soon-Hyung Hong, Woong-Hee Son, Jae-Hyung Park, Jong-Taek Lee, Jin-Wook Jung, Kyoung-Min Shin
  • Patent number: 6969400
    Abstract: Provided are crosslinked polymer compositions that include a first synthetic polymer containing multiple nucleophilic groups covalently bound to a second synthetic polymer containing multiple electrophilic groups. The first synthetic polymer is preferably a synthetic polypeptide or a polyethylene glycol that has been modified to contain multiple nucleophilic groups, such as primary amino (—NH2) or thiol (—SH) groups. The second synthetic polymer may be a hydrophilic or hydrophobic synthetic polymer, which contains or has been derivatized to contain, two or more electrophilic groups, such as succinimidyl groups. The compositions may further include other components, such as naturally occurring polysaccharides or proteins (such as glycosaminoglycans or collagen) and/or biologically active agents.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: November 29, 2005
    Assignee: Cohesion Technologies, Inc.
    Inventors: Woonza M. Rhee, Frank A. DeLustro, Richard A. Berg
  • Patent number: 6942475
    Abstract: An orthopedic implant device and method is disclosed. Specifically, a knee mold system is disclosed, including elastic tibial and femoral molds, each of which may be configured and dimensioned as a unitary mold for in situ placement during a surgical procedure. Each mold may be manufactured from an elastic material that may be disposable. The tibial mold may further comprise a sidewall forming a cavity, markings for relative depth measurement, and depth rings for use as a guide for scoring, cutting, and/or trimming and tearing away an excess portion of the tibial mold. The femoral mold may further comprise a sidewall defining a cavity, two legs extending from a body of the femoral mold for forming the artificial condyles, and an eyelet for aiding in placement and removal of the femoral mold. The resulting prosthetic tibial and femoral components may form an articulation surface that mimics, at least in part, the natural articulation surface of the knee.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: September 13, 2005
    Assignee: Ortho Development Corporation
    Inventors: Michael D. Ensign, Matthew M. Lowe, E. Marc Mariani, Michael H. Bourne
  • Patent number: 6935404
    Abstract: A stent having marker tabs formed from a micro-alloyed combination of materials provides for more precise placement and post-procedural visualization in a vessel, by increasing the radiopacity of the stent under X-ray fluoroscopy. A unique micro-alloying process is utilized to form the tabs, comprising a first alloy and a second alloy, wherein one of these alloys is radiopaque. This substantially eliminates the possibility of galvanic action between the tab and the stent. This process is also applicable to other medical devices.
    Type: Grant
    Filed: November 8, 2002
    Date of Patent: August 30, 2005
    Inventors: Thomas Duerig, Mark L. Mathis, Alan Roy Pelton, Dieter Stoeckel
  • Patent number: 6932842
    Abstract: An implant is generated which is functionally and aesthetically adapted to the patient with a greater degree of precision, irrespective of the size, form and complexity of the defect, whereby the implant can be produced and operatively inserted into the patient over a short time period and in a simple manner. A virtual three-dimensional model of the patient which is formed from existing recorded (two-dimensional) image data of the patient is compared with real medical reference data. The comparison which is, for example, carried out using a data bank with test person data enables a reference model object which is most suited to the patient or closest to the patient model to be selected or formed and a virtual implant model is generated accordingly. Computer numeric control data is directly generated from the implant model which is generated virtually in the computer for program-assisted production of the implant.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: August 23, 2005
    Assignee: 3di GmbH
    Inventors: Peter Litschko, Torsten Henning, Jörg Beinemann, Wolfgang Fried, Werner Linss
  • Patent number: 6920677
    Abstract: A method for manufacturing an endovascular support device comprises positioning a generally tubular member made of an implantable metal and having a generally cylindrical wall in a working relationship with a laser beam. A desired pattern is cut in the generally cylindrical wall in order to produce a stent having a plurality of openings and a plurality of edges. The stent is tumbled in a medium to round its edges and, in turn, to produce more rounded cross-sections of stent elements.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: July 26, 2005
    Assignee: Medtronic Vascular, Inc.
    Inventors: Mark J. Dolan, Justin Goshgarian
  • Patent number: 6913617
    Abstract: A method for forming an implantable medical device, such as a stent, is provided, in which electric discharges are applied to a metal surface of the implantable medical device. The electric discharges pit the surface. The pitted surface improves retention of a coating on the device and increases the amount of coating that can be carried by the device. An electric discharge machining process is described for applying electric discharges to the surface of the implantable medical device or portion thereof.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: July 5, 2005
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventor: Paul Reiss
  • Patent number: 6908444
    Abstract: The use of a flexible, foldable or rollable and heatable mat for the manufacture of an orthosis, in which a flat sheet of a thermoplastic material is heated on a flat-laid mat to a temperature at which the sheet softens and can be readily shaped, whereafter the sheet is applied to and shaped on part of a patient's body and then allowed to cool on the patient so as to form a supporting orthosis. The mat can be transported in a rolled-up state or a folded state and laid out on a supporting surface, such as a floor surface in the proximity of the patient. The mat includes a heating element disposed over the area of the mat and functioning to deliver heat uniformly to the sheet.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: June 21, 2005
    Assignee: Danderyds Biotech Innovation AB
    Inventors: Leif Lindh, Kjell Lindh
  • Patent number: 6905514
    Abstract: A replacement device for resurfacing a joint surface of a femur and a method of making and installing such a 5 device is provided. The custom replacement device is designed to substantially fit the trochlear groove surface, of an individual femur. Thereby creating a “customized” replacement device for that individual femur and maintaining the original kinematics of the joint. The replacement device may be defined by four boundary points, and a first and a second surface. The first of four points is 3 to 5 mm from the point of attachment of the anterior cruciate ligament to the femur. The second point is near the bottom edge of the end of the natural articulatar cartilage. The third point is at the top ridge of the right condyle and the fourth point at the top ridge of the left condyle of the femur.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: June 14, 2005
    Assignee: Kinamed, Inc.
    Inventors: Roger Carignan, Clyde R. Pratt
  • Patent number: 6899728
    Abstract: A graft is provided with a flexible sheet of graft material to which is sewn a reinforcing wire, preferably of shape-memory alloy. Sewing of the wire is carried out while the sheet is substantially planar, thus by conventional embroidery machines. The sheet is subsequently rolled into a tubular shape.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: May 31, 2005
    Assignees: Bridport (UK) Limited, Anson Medical Limited
    Inventors: Peter Phillips, Julian Ellis, Alan McLeod, Gail Beaton, Peter Butcher
  • Patent number: 6872347
    Abstract: An ankle block for a leg prosthesis comprising an insert having a body with an upper mounting surface and a bottom interface surface opposite from the upper mounting surface. The insert body defines a central coaxial hole therethrough. An over mold is formed about an exterior of the body and extends upwardly therefrom defining a central cavity above the insert and above the upper mounting surface.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: March 29, 2005
    Assignee: College Park Industries, Inc.
    Inventors: Christopher L. Johnson, Eric L. Robinson, Michael J. Link
  • Patent number: 6869443
    Abstract: A stent includes a main body of a generally tubular shape for insertion into a lumen of a vessel of a living being. The tubular main body includes a substantially biodegradable matrix having collagen IV and laminin that enclose voids within the matrix. The tubular main body also includes a biodegradable strengthening material in contact with the matrix to strengthen the matrix. The tubular main body is essentially saturated with drugs.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: March 22, 2005
    Assignee: SciMed Life Systems, Inc.
    Inventors: Paul J. Buscemi, Elizabeth A. Stejskal, Donald F. Palme, II, Lixiao Wang
  • Patent number: 6866805
    Abstract: A hybrid stent is formed which exhibits both high flexibility and high radial strength. The expandable hybrid stent for implantation in a body lumen, such as a coronary artery, consists of radially expandable cylindrical rings generally aligned on a common longitudinal axis and interconnected by one or more links. In one embodiment, a dip-coated covered stent is formed by encapsulating cylindrical rings within a polymer material. In other embodiments, at least some of the rings and links are formed of a polymer material which provides longitudinal and flexural flexibility to the stent. These polymer rings and links are alternated with metallic rings and links in various configurations to attain sufficient column strength along with the requisite flexibility in holding open the target site within the body lumen. Alternatively, a laminated, linkless hybrid stent is formed by encapsulating cylindrical rings within a polymer tube.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: March 15, 2005
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: James Hong, Rahul Bhagat, Syed Hossainy, Santosh Prabhu, K.T. Venkateswara Rao, Ashok Shah, Srinivasan Sridharan
  • Patent number: 6866681
    Abstract: A prosthetic ligament and its method of manufacture is provided by which the prosthetic ligament is comprised of a plurality of strands aligned in a parallel lengthwise relationship to form a bundle, with the strands being interwoven at their respective ends while the middle portion of the strands remain unattached to adjacent strands. A predetermined torsion is applied to each strand prior to forming the bundle to create natural coiling in either a clockwise or counter-clockwise orientation. The prosthetic ligament may be used for a posterior or anterior cruciate ligament of the knee joint.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: March 15, 2005
    Inventors: Jacques-Phillippe Laboureau, Bernard Brulez
  • Patent number: 6863696
    Abstract: A tubular vascular prosthesis with a uniform velour outer layer has an elementary unit of tubing composed of a double velour outer layer, made from polyester yarn, the middle layer, made from two polyester yarns, positioned between two strained polyurethane monofilament yarns and four polyurethane yarn monofilaments, the smooth inner surface and linking of all three layers made of polyester wefts, the between filaments filled with aqueous gelatin-glycerol solution.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: March 8, 2005
    Inventors: Viktoria Kantsevitcha, Eriks Masteiko, Leonids Ribickis
  • Patent number: 6860904
    Abstract: A method of tissue grafting. Tissue elements are obtained from at least one human body and are enclosed within a retaining structure. The tissue elements with the retaining structure are shaped to form a grafting material having a predetermined configuration. The grafting material is then implanted into a patient.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: March 1, 2005
    Assignee: Bonutti 2003 Trust-A
    Inventor: Peter M. Bonutti
  • Patent number: 6854172
    Abstract: A process for producing implants made of a bioresorbable metal, particularly magnesium alloys or zinc alloys, in which the material properties of the magnesium or the zinc are changed and the processing and utilization properties are improved by combining process steps for adjusting the properties of the material and subsequent machining. In this way it is possible to produce thin-walled tubular implants, particularly blood vessel support stents, from bioresorbable magnesium or zinc alloys, which are readily deformable without the risk of fracture during implantation.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: February 15, 2005
    Assignee: Universitaet Hannover
    Inventors: Volker Kaese, Arne Pinkvos, Heinz Haferkamp, Matthias Niemeyer, Friedrich-Wilhelm Bach
  • Patent number: 6855161
    Abstract: A radiopaque nitinol medical device such as a stent for use with or implantation in a body lumen is disclosed. The stent is made from a superelastic alloy such as nickel-titanium or nitinol, and includes a ternary element selected from the group of chemical elements consisting of iridium, platinum, gold, rhenium, tungsten, palladium, rhodium, tantalum, silver, ruthenium, or hafnium. The added ternary element improves the radiopacity of the nitinol stent comparable to that of a stainless steel stent of the same size and strut pattern coated with a thin layer of gold. The nitinol stent has improved radiopacity yet retains its superelastic and shape memory behavior and further maintains a thin strut/wall thickness for high flexibility.
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: February 15, 2005
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: John F. Boylan, Daniel L. Cox
  • Publication number: 20040267351
    Abstract: The present invention provides improvements in methods for the manufacture of stents. Specifically, the invention provides methods wherein stents are placed on jigs of various designs which facilitate manufacture, stents carried by the jigs are immersed in liquid baths which contain an electrolyte, the stents are urged into contact with their associated electrodes while current is applied to those electrodes, and wherein the positions of contact between the stents and their respective electrodes are altered during processing without removing the stents from the jig. The method is applicable for electropolishing and electroplating.
    Type: Application
    Filed: June 6, 2003
    Publication date: December 30, 2004
    Inventor: Brian Swain
  • Publication number: 20040267369
    Abstract: The present invention is directed to the field of prosthetic devices. More particularly, one embodiment of the present invention is directed to an artificial disc that can be used as a replacement for an intervertebral disc (e.g., a human intervertebral lumbar disc, a human intervertebral cervical disc and/or a human intervertebral thoracic disc).
    Type: Application
    Filed: July 15, 2004
    Publication date: December 30, 2004
    Inventors: Matthew Lyons, Stephen M. Green, Matthew A. Keary
  • Publication number: 20040260402
    Abstract: A method of forming prosthetic limbs is disclosed. A preferred embodiment of practicing the invention comprises the basic steps of scanning a portion of a residual limb on which a prosthetic device is to be attached, creating a digital representation of a socket portion of the prosthetic device using the scanned information, and creating the socket out of physical material using a digitally controlled layered manufacturing technique driven by the digital representation of the socket.
    Type: Application
    Filed: June 20, 2003
    Publication date: December 23, 2004
    Inventors: Steven E. Baldini, Sidney W. Sprouse, William D. Macy
  • Publication number: 20040260403
    Abstract: A prosthetic socket having a self-contained vacuum reservoir chamber includes a rigid, load-bearing inner socket member for receiving a residual limb and an outer, rigid, load-bearing wall section attached to the inner wall section in a manner providing a vacuum reservoir chamber between the inner wall and the outer wall section. The vacuum reservoir chamber communicates with the inner volume of the inner wall through a vacuum transfer port and the vacuum reservoir chamber may be evacuated via an evacuation port having an appropriate one-way check valve permitting withdrawal of air from the vacuum reservoir chamber while preventing ingress of air into the chamber. A method for making the prosthetic socket is disclosed.
    Type: Application
    Filed: June 18, 2004
    Publication date: December 23, 2004
    Inventors: William Stan Patterson, William E. Patterson
  • Publication number: 20040249438
    Abstract: The invention concerns a metal object for medical or surgical use, such as a prosthesis, for example an endovascular prosthesis (called stent) for percutaneous transluminal coronary angioplasty, comprising a metal substrate whereof the surface is coated partly at least with a polysaccharide compound. The invention is characterised in that the polysaccharide compound is covalently bound, via a plurality of grafting arms, comprising each at least a silane unit, bound on one side to the metal substrate by an —O— metal bond, and on the other side, directly or indirectly, by a covalent —NH— bond, with the polysaccharide compound.
    Type: Application
    Filed: February 23, 2004
    Publication date: December 9, 2004
    Inventors: Oliver Lefranc, Thierry Avramoglou, Jacqueline Jozefonvicz, Thierry Darnis, Michel Therin
  • Publication number: 20040236399
    Abstract: The stent with improved surface adhesion of the present invention increases adhesion between a stent and a coating by including a silane layer between the stent and the coating. The silane layer improves the wettability of the stent for application of a liquid coating and increases the coating adhesion. A coated stent can be manufactured by applying a silane solution to a stent by spraying or dipping the stent to form a silane layer on the stent surface, curing the resulting silane layer in an inert atmosphere, and applying a coating to the silane layer. In one embodiment, an amino silane can be used with a stainless steel stent.
    Type: Application
    Filed: April 22, 2004
    Publication date: November 25, 2004
    Applicant: Medtronic Vascular, Inc.
    Inventor: Rangarajan Sundar
  • Patent number: 6820676
    Abstract: An implantable endoluminal device which is fabricated from materials which present a blood or body fluid and tissue contact surface which has controlled heterogeneities in material constitution. An endoluminal stent which is made of a material having controlled heterogeneities in the stent material along the blood flow surface of the stent and the method of fabricating the stent using vacuum deposition methods.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: November 23, 2004
    Assignee: Advanced Bio Prosthetic Surfaces, Ltd.
    Inventors: Julio C. Palmaz, Eugene A. Sprague, Cristina Simon, Denes Marton, Roger W. Wiseman, Christopher E. Banas
  • Patent number: 6821470
    Abstract: A method of manufacturing a bearing component for use in arthroplasty for cooperation with a first and a second component includes the step of providing a non-linear support of a durable material having. The method further includes providing a molding die for manufacturing the bearing component having first and second mold portions. The first mold portion provides a first surface for cooperation with the first joint component and the second mold portion provides a second surface for cooperation with the second joint component. The method includes positioning the support in a desired position within the molding die with the first end or the second end located in the first mold portion, adding moldable material into the molding die, surrounding the support with the moldable material, heating and pressurizing the moldable material, permitting the moldable material to cool, and removing the component from the molding die.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: November 23, 2004
    Assignee: Depuy Products, Inc.
    Inventors: Rama Rao V. Gundlapalli, Mark Heldreth, Albert Burstein
  • Publication number: 20040230299
    Abstract: The present invention provides monofocal ophthalmic lenses that exhibit extended depth of field while providing sufficient contrast for resolution of an image over a selected range of defocus distances. In some embodiments, a lens of the invention can include a refractive surface having controlled surface modulations relative to a base profile. The surface modulations are designed to extend a depth of field of the lens such that a single image can be resolved, albeit with somewhat less contrast, over a range of distances greater than the focal region of a conventional lens. The ophthalmic lenses of the invention can be employed in various vision correction applications, including, but not limited to, intraocular lenses, contact lenses, instrastromal implants and other refractive devices.
    Type: Application
    Filed: May 12, 2003
    Publication date: November 18, 2004
    Inventors: Michael J. Simpson, Daniel R. Carson
  • Publication number: 20040230315
    Abstract: An implant is provided for replacing a portion of an articular surface. The implant includes a body portion having a recess. An insert is disposed in the recess. The body portion and insert provide a load bearing surface of the implant, with the load bearing surface including regions of the insert and regions of the body portion. The insert may be formed from a lubricious and shock absorbing material, providing a low friction and shock absorbing region of the load bearing surface.
    Type: Application
    Filed: February 27, 2004
    Publication date: November 18, 2004
    Inventor: Steven W. Ek
  • Patent number: 6818158
    Abstract: There is disclosed a method of making an intraocular lens having first and second viewing elements. The viewing elements are interconnected by a plurality of translation members extending from a periphery of the first viewing element. At least one of the translation members comprises a plurality of arms, and at least one of the viewing elements includes an optic having refractive power. The method comprises providing a first outer mold and a second outer mold, and an inner mold therebetween. The first outer mold and the inner mold define a first mold space, and the second outer mold and the inner mold define a second mold space. The method further comprises molding the viewing elements, the plurality of arms and the optic as a single piece by filling the first and second mold spaces with a material, such that the first viewing element and the plurality of arms are formed in the first mold space and the second viewing element is formed in the second mold space.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: November 16, 2004
    Assignee: Visiogen, Inc.
    Inventors: Hai-Minh Pham, Tuan Anh Nguyen
  • Publication number: 20040225347
    Abstract: An expandable stent includes a tubular structure with an outer surface positionable adjacent to a vessel wall and an inner surface facing a lumen of a body passageway. The tubular structure further includes a plurality of expansion struts, connector struts and cells. The tubular structure has a first diameter which permits intraluminal delivery of the tubular structure into the body passageway, and a second expanded and deformed diameter which is achieved upon the application of a radially, outwardly extending force. A plurality of cavities are formed in the outer surface of the stent.
    Type: Application
    Filed: July 18, 2003
    Publication date: November 11, 2004
    Inventor: G. David Lang
  • Publication number: 20040220667
    Abstract: Diamond-like carbon films are deposited on devices for implantation in tissues of a living body, preferably, retinal implants. Openings may be formed in the diamond-like carbon film, preferably in alignment with portions of the device intended for electrical contact with surrounding tissues, i.e., electrodes. Alternatively, the diamond-like carbon film may be rendered electrically conductive. Furthermore, the diamond-like carbon films may be created in such a manner that they are substantially transparent to various wavelengths of electromagnetic radiation, including visible and/or infrared light. In a presently preferred embodiment, the diamond-like carbon film is deposited using a magnetically-filtered, cathodic arc physical vapor deposition process. Implantable devices, particularly retinal implants, comprising a diamond-like carbon film may exhibit excellent biocompatibility and biodurability properties in comparison with prior art devices and passivation coatings.
    Type: Application
    Filed: February 6, 2004
    Publication date: November 4, 2004
    Inventors: Vladimir Gelfandbein, George Y. McLean
  • Patent number: 6805898
    Abstract: An implantable medical device, such as a stent or graft, having asperities on a designated region of its outer surface is disclosed. The asperities can serve to improve retention of one or more layers of a coating on the device and to increase the amount of coating that can be carried by the device. The asperities can be formed by using a stream of pressurized grit to roughen the surface. The asperities can also be formed by removing material from the outer surface, for example, by chemical etching with or without a patterned mask. Alternatively, the asperities can be formed by adding material to the outer surface, for example, by welding powder particles to the outer surface or sputtering.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: October 19, 2004
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Steven Z. Wu, Sameer Harish, Deborra Sanders-Millare, Judy A. Guruwaiya, Daryush Mirzaee, Syed Hossainy, Charlene Chen
  • Publication number: 20040204771
    Abstract: A method of forming a prosthetic residual limb test socket utilizes an adapter bracket having generally smooth sidewalls in which a corresponding plurality of removable posts are received. The adapter bracket is secured to a model of the residual limb of a patient, and a socket forming material is applied about at least a portion of the model and the adapter bracket. The socket forming material covers the plurality of removable posts but not the lower mounting face of the adapter bracket. The adapter bracket is removable and reusable. In a further aspect, a method is provided for forming a prosthetic residual limb socket based upon a test socket, in which a casting anchor is positioned within the test socket, the casting anchor being engaged with an alignment member extending out through a hole in the test socket. A molding material is introduced into the test socket so as to at least partially encase the casting anchor, and the molding material is allowed to set to form a model.
    Type: Application
    Filed: April 12, 2004
    Publication date: October 14, 2004
    Inventor: Verner M. Swanson
  • Publication number: 20040199241
    Abstract: Silk-containing stent grafts are provided comprising an endoluminal stent and a graft, wherein the silk is induces the in vivo adhesion of the stent graft to vessel walls, or, otherwise induces or accelerates an in vivo fibrotic reaction causing said stent graft to adhere to vessel wall. Also provided are methods for making and using such stent grafts.
    Type: Application
    Filed: December 29, 2003
    Publication date: October 7, 2004
    Applicant: Angiotech International AG
    Inventors: David M. Gravett, Pierre E. Signore, Kaiyue Wang, Philip M. Toleikis, Dechi Guan, Zengxuan Hu, Arpita Maiti
  • Publication number: 20040188011
    Abstract: A method of making a prosthetic polymeric bearing element having a backing made from a “rigid” polymeric bearing material which has a minimum hardness value of 65 N/mm2 and which supports a bearing liner having a bearing surface and made from a “soft” elastomeric polyurethane material having a hardness value of 3.0 to 9.0 N/mm2 (using machine testing method BS 2782; Pt3 method 365D). The opacity of said bearing liner is arranged to allow the passage of a laser beam through it and the opacity of said backing is arranged to prevent the passage of a laser beam which has passed through the bearing liner. The liner and backing are then bonded together and then the bearing liner and backing are treated with the laser beam to cause an improved interfacial bond by laser welding.
    Type: Application
    Filed: March 4, 2004
    Publication date: September 30, 2004
    Applicant: Howmedica International S. DE R.L.
    Inventor: Eric Jones
  • Patent number: 6797217
    Abstract: Shape memory alloy and elastically self-expanding endoluminal stents which are at least partially encapsulated in a substantially monolithic expanded polytetrafluorethylene (“ePTFE”) covering. An endoluminal stent, which has a reduced diametric dimension for endoluminal delivery and a larger in vivo final diametric diameter is encapsulated in an ePTFE covering which circumferentially covers both the luminal and abluminal walls along at least a portion of the longitudinal extent of the endoluminal stent. The endoluminal stent is fabricated from a shape memory alloy which exhibits either shape memory or pseudoelastic properties or from an elastic material having an inherent spring tension.
    Type: Grant
    Filed: September 12, 2002
    Date of Patent: September 28, 2004
    Assignee: Bard Peripheral Vascular, Inc.
    Inventors: Brendan J. McCrea, Tarun J. Edwin, Christopher E. Banas
  • Publication number: 20040181236
    Abstract: A method of manufacturing a medical device, such as an endoprosthesis, includes reducing the size of the medical device, and vibrating the device. In embodiments, the device is vibrated ultrasonically.
    Type: Application
    Filed: March 12, 2003
    Publication date: September 16, 2004
    Inventors: Thomas C. Eidenschink, Eric B. Stenzel