Patents by Inventor James Weldon

James Weldon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6726621
    Abstract: A device for removing a thrombus filter from a blood vessel is disclosed. A device in accordance with the present invention includes a shaft having a proximal end, a distal end, and a lumen extending therethrough, a wire having a first end and a second end, the wire being partially disposed within the lumen of the shaft, a portion of the wire extending beyond the distal end of the shaft and forming a loop, and a portion of the wire extending beyond the proximal end of the shaft.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: April 27, 2004
    Assignee: SciMed Life Systems, Inc.
    Inventors: Naroun Suon, James Weldon
  • Publication number: 20030220683
    Abstract: An endoluminal device for implantation in a body lumen reduces movement or migration of the device after implantation by the use of barbs or barb assemblies. A first embodiment uses at least one barb assembly having first and second portions attached to an implant, such as a stent, and at either sides of a bend. The second portion is adapted to protrude radially inward when the implant is in the radially compressed configuration and radially outward when the implant is in its radially expanded configuration. A second embodiment uses a barb having a curved segment which is curved proximally and radially inwardly. A third embodiment utilizes at least one barb assembly having a wire with a length greater than the cell height of the implant across which it extends and a substantially uniform cross-sectional area. Methods for implanting such devices are also contemplated.
    Type: Application
    Filed: May 22, 2002
    Publication date: November 27, 2003
    Inventors: Zarouhi Minasian, James Weldon
  • Publication number: 20030191516
    Abstract: A delivery system comprising an endoluminal device, an outer sheath that radially surrounds the endoluminal device, a pusher positioned at one end of the endoluminal device, and a linkage between the pusher and the outer sheath that coordinates movement of the outer sheath in a first direction with simultaneous movement of the pusher in a second direction opposite the first direction. This delivery system is particularly useful for endoluminal devices that foreshorten, and may comprise the outer sheath moving a first distance (d1) and the pusher moving a second distance (d2), where d2/d1 is approximately equal to the foreshortening ratio. The delivery system of this invention enables a foreshortening device, such as a vena cava filter, or stent, graft, or combination thereof, to be deployed with its end in a precise deployment location without foreshortening causing the end to move from the deployment location as the stent expands.
    Type: Application
    Filed: April 4, 2002
    Publication date: October 9, 2003
    Inventors: James Weldon, Ilya Yampolsky
  • Publication number: 20030163188
    Abstract: A method for deployment of a multi-part endoluminal device comprises deploying a first portion of the device sequentially from its distal end to its proximal end, then deploying a second portion of the device sequentially from its proximal end to its distal end so that its distal end overlaps the first portion proximal end. The system for deploying the endoluminal device comprises a first introducer loaded with a first endoluminal device and adapted to deploy the first device sequentially from the distal end to the proximal end, and a second introducer loaded with a second endoluminal device and adapted to anchor the second endoluminal device proximal end while deploying the second endoluminal device sequentially from the proximal end to the distal end.
    Type: Application
    Filed: February 22, 2002
    Publication date: August 28, 2003
    Inventors: Patrick A. Haverkost, Paul F. Chouinard, James Weldon, Karen McDonald, Wade M. Johnson, Juan Carlos Parodi
  • Publication number: 20030163155
    Abstract: An introducer deploys an endoluminal device in a distal location from a proximal location. The introducer comprises a retrograde portion, an anterograde portion axially moveable relative to the retrograde portion, a shaft having a distal tip and an anterograde sheath attached to the distal tip, and anchoring means in at least one of the retrograde portion or the anterograde portion for anchoring the device during deployment from its proximal end to its distal end. An inner sheath may be mounted concentrically over the shaft with the endoluminal device mounted concentrically over the inner sheath. The anchoring device may comprise an inflatable balloon mounted radially inside the retrograde portion, a tether, or an extended portion of the endoluminal device confined by a notch in the interface of two sheaths in the retrograde portion of the introducer, or may comprise a holder in the anterograde portion.
    Type: Application
    Filed: February 22, 2002
    Publication date: August 28, 2003
    Inventors: Patrick A. Haverkost, Paul F. Chouinard, James Weldon, Karen McDonald, Wade M. Johnson
  • Patent number: 6468290
    Abstract: A self-centering filter is useful for trapping blood clots, reducing their size and arresting their further migration from the vena cava into pulmonary circulation. The two-planar filter design is formed from a conical array of filter wires wherein two sets of filter wires are included, each set differing in length from the other. The filter wires diverge from a common apex at one end and extend radially outwardly therefrom to an attachment end attachable to the wall of a blood vessel such that the attachment ends of the first set of wires are anchored at a location spaced apart from the location of anchoring of the attachment ends of the second set, effecting a two-planar filter design. This establishes a single filtering element having two planes of contact with the vein wall which also provides for centering of the filtering element. At least one of the sets of wires contains barbs, e.g. hooks, for anchoring the filter to the inner venal wall.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: October 22, 2002
    Assignee: SciMed Life Systems, Inc.
    Inventors: James Weldon, Naroun Suon
  • Publication number: 20020067674
    Abstract: Methods for manufacturing optical discs with purposefully provided errors therein are disclosed, wherein the error instances can be used to identify the authenticity of the optical disc. Additionally, methods for determining the authenticity of an optical disc are disclosed, wherein values derived from descriptors of errors found on the disc are compared with corresponding known values indicative of an authentic disc for determining whether the disc was legitimately manufactured or not. Such methods may utilize errors that are correctable, uncorrectable, trackable, and/or untrackable. An end user (or the end user's optical reading laser) may be instructed to purposefully alter a portion of the disc in a predetermined manner so that an unauthorized copy of the disc is easily discoverable by, e.g., activation of an authentication program on the disc or accessible via a network such as the Internet.
    Type: Application
    Filed: January 25, 2002
    Publication date: June 6, 2002
    Applicant: Hide & Seek Technologies, Inc.
    Inventors: Karl Schneck, James Weldon, Jerry R. Smith
  • Publication number: 20020045918
    Abstract: A device for removing a thrombus filter from a blood vessel is disclosed. A device in accordance with the present invention includes a shaft having a proximal end, a distal end, and a lumen extending therethrough, a wire having a first end and a second end, the wire being partially disposed within the lumen of the shaft, a portion of the wire extending beyond the distal end of the shaft and forming a loop, and a portion of the wire extending beyond the proximal end of the shaft.
    Type: Application
    Filed: December 14, 2001
    Publication date: April 18, 2002
    Inventors: Naroun Suon, James Weldon
  • Patent number: 6342062
    Abstract: A device for removing a thrombus filter from a blood vessel is disclosed. A device in accordance with the present invention includes a shaft having a proximal end, a distal end, and a lumen extending therethrough, a wire having a first end and a second end, the wire being partially disposed within the lumen of the shaft, a portion of the wire extending beyond the distal end of the shaft and forming a loop, and a portion of the wire extending beyond the proximal end of the shaft.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: January 29, 2002
    Assignee: Scimed Life Systems, Inc.
    Inventors: Naroun Suon, James Weldon
  • Patent number: 6074290
    Abstract: The present invention provides a block assembly for mounting an optical lens blank onto a lens processing machine, comprising a compliant lens block with a relatively thin double-sided adhesive tape having differential adhesion. This assembly affords a very cost efficient system for attaching a lens blank to a lens processing machine. In contrast to traditional thick adhesive pads, the tapes of the present invention do not suffer from shear displacements which may cause processing errors or inaccuracies. In addition, the double-sided adhesive tapes of the present invention achieve greater adhesion to the lens block than to the lens. This feature promotes and ensures a "clean" removal of the tape from the lens when the block is deblocked. The present invention also provides a method for mounting an optical lens blank onto a lens processing machine.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: June 13, 2000
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John H. Ko, James A. Weldon
  • Patent number: 5885700
    Abstract: The present invention provides thermoplastic ophthalmic lens blocking compositions that have many advantages over traditional metal alloy materials. Preferred compositions comprise a blend of (i) a hydrocarbon resin, preferably an aromatic hydrocarbon resin; (ii) a side chain crystallizable hydrocarbon polymer or copolymer; and (iii) optionally an modifier or mixture of modifiers, preferably straight chain alcohols. The composition may also comprise one or more modifiers, fillers or heat absorbing materials. In one embodiment, the composition is used to fill the cavity between a preformed lens block and a lens. In another embodiment the composition is used to form a lens block. Methods of holding a lens blank are taught. Tapes that provide a receptive surface against which the composition may be adhered are disclosed.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: March 23, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James A. Weldon, Michael Govek, Carole Sedlock, John H. Ko
  • Patent number: 5816000
    Abstract: The present invention relates to a structural support post (1) for use in a partition system (2) for supporting one or more panels (6) having panel support brackets (25) with hooks (44) at or in the vicinity of edges of the panel. The post (1) comprises a profile tube having a diameter of at least 70 mm and a multiplicity of angularly spaced longitudinal undercut slots (13), the walls of the slots being provided with insert plates (24) formed and arranged for engagement by hooks (44) provided on the panel support brackets (25). The support posts (1) may provide, in use, a substantially secure support for a security partitioning system (2).
    Type: Grant
    Filed: November 7, 1996
    Date of Patent: October 6, 1998
    Assignee: Havelock Europa Plc
    Inventors: Alan Douglas Izatt, Walter McCusker, Alexander Harper, Ronald James Weldon
  • Patent number: 5520568
    Abstract: A method of processing a lens is disclosed. A lens blank and a lens block are each provided with a structured surface having a plurality of tapered elements. The lens blank is releasably attached to the lens block by pressing the structured surface of the lens blank against the structured surface of the lens block, followed by subjecting the mounted lens blank to lens processing operations.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: May 28, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Lawrence W. Craighead, James A. Weldon, Forrest J. Rouser, Debra L. Wilfong
  • Patent number: 4893438
    Abstract: A concatenation of circular abrasive discs each having a layer of abrasive material on a first surface, and means on a second surface for releasably attaching said discs to a drive member. The discs are attached to two adjacent discs at opposite edges by two narrow tabs along each edge spaced by at least 0.32 centimeter (1/8 inch) along the edge and generally equally spaced on opposite sides of a center line extending between the centers of the attached discs. Also the discs are separated between the tabs and the tabs are folded to position abrasive discs in a stack within a container with each abrasive disc in the stack having its layer of abrasive against the layer of abrasive of one adjacent disc, and its means for attaching adjacent the means for attaching of the other adjacent disc.
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: January 16, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard L. Fry, Gerald L. Bergsrud, Russell J. Maland, James A. Weldon