Patents by Inventor Stuart R. MacDonald

Stuart R. MacDonald 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).

  • Publication number: 20220079624
    Abstract: An example catheter includes an elongate member having a wall defining a longitudinally extending lumen, a fixation member disposed on an exterior surface of the wall of a distal portion of the elongate member, a pull wire extending axially through the wall of the elongate member and coupled to the fixation member, and a member portion encasing at least a portion of the fixation member, where the fixation member is shaped to engage the distal member in response to a pull force applied to the pull wire to cause the elongate member to deflect from an initial configuration to a deflected configuration.
    Type: Application
    Filed: September 10, 2021
    Publication date: March 17, 2022
    Inventors: Madeline A. Mannion, John B. Horrigan, Stuart R. MacDonald
  • Publication number: 20210052295
    Abstract: Assemblies and methods provide for implantation of multiple medical leads to a defined space within the body, such as the epidural space, through a single entry. A catheter having multiple lumens or alternatively a single oblong lumen may be used. A distal end of the catheter enters the defined space through the single entry such that the distal ends of the multiple lumens or the oblong lumen are present in the defined space. Medical leads are introduced through the multiple lumens or the oblong lumen into the defined space. In some cases, the distal end of the catheter may be deflectable to direct the medical leads within the defined space. In other cases, sheaths may be present within each lumen of the catheter where the sheaths may be extended into the defined space and deflect to direct the medical leads that are being passed through a lumen of the sheaths.
    Type: Application
    Filed: August 31, 2020
    Publication date: February 25, 2021
    Inventors: Eric H. Bonde, Phillip C. Falkner, John B. Horrigan, Stuart R. MacDonald, Madeline A. Mannion
  • Patent number: 10758262
    Abstract: Assemblies and methods provide for implantation of multiple medical leads to a defined space within the body, such as the epidural space, through a single entry. A catheter having multiple lumens or alternatively a single oblong lumen may be used. A distal end of the catheter enters the defined space through the single entry such that the distal ends of the multiple lumens or the oblong lumen are present in the defined space. Medical leads are introduced through the multiple lumens or the oblong lumen into the defined space. In some cases, the distal end of the catheter may be deflectable to direct the medical leads within the defined space. In other cases, sheaths may be present within each lumen of the catheter where the sheaths may be extended into the defined space and deflect to direct the medical leads that are being passed through a lumen of the sheaths.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: September 1, 2020
    Assignee: MEDTRONIC, INC.
    Inventors: Eric H. Bonde, Phillip C. Falkner, John B. Horrigan, Stuart R. MacDonald, Madeline A. Mannion
  • Publication number: 20160278851
    Abstract: A method and system with enhanced steerability and simplicity of construction for medical devices and a method of manufacturing the same. A steerable medical device may include an elongate body having a distal portion, proximal portion, and central lumen extending therethrough, a distal tip coupled to the distal portion of the elongate body, and at least one pull wire, each of the at least one pull wire having a distal end coupled to the distal tip, the distal portion of the elongate body including at least one pull wire lumen extending proximally from the distal tip through the distal portion of the elongate body, each of the at least one pull wire being within a corresponding pull wire lumen of the at least one pull wire lumen in the distal portion of the elongate body and within the central lumen in the proximal portion of the elongate body.
    Type: Application
    Filed: March 23, 2015
    Publication date: September 29, 2016
    Inventors: Madeline A. MANNION, Gary R. FIEDLER, John B. HORRIGAN, Stuart R. MACDONALD
  • Patent number: 9173737
    Abstract: A stent frame including an annular portion having first and second ends, a central longitudinal axis, and a wire portion with at least two extending posts and a generally sinusoidal series of peaks and valleys between each of the at least two extending posts; an atrial portion extending from the first end of the annular portion, wherein the atrial portion includes a plurality of flares that extend radially outward relative to the longitudinal axis of the annular portion; and a ventricular portion extending from the second end of the annular portion, wherein the ventricular portion includes at least one flare that extends radially outward relative to the longitudinal axis of the annular portion.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: November 3, 2015
    Assignee: Medtronic, Inc.
    Inventors: Alexander J. Hill, Mark J. Capps, Carol E. Eberhardt, Morgan M. House, Stuart R. MacDonald, Joseph C. Morrow, Jerald Redmond, Janice L. Shay, Timothy R. Ryan
  • Publication number: 20120323254
    Abstract: Assemblies and methods provide for implantation of multiple medical leads to a defined space within the body, such as the epidural space, through a single entry. A catheter having multiple lumens or alternatively a single oblong lumen may be used. A distal end of the catheter enters the defined space through the single entry such that the distal ends of the multiple lumens or the oblong lumen are present in the defined space. Medical leads are introduced through the multiple lumens or the oblong lumen into the defined space. In some cases, the distal end of the catheter may be deflectable to direct the medical leads within the defined space. In other cases, sheaths may be present within each lumen of the catheter where the sheaths may be extended into the defined space and deflect to direct the medical leads that are being passed through a lumen of the sheaths.
    Type: Application
    Filed: June 18, 2012
    Publication date: December 20, 2012
    Applicant: Medtronic, Inc.
    Inventors: Eric H. Bonde, Phillip C. Falkner, John B. Horrigan, Stuart R. MacDonald, Madeline A. Mannion
  • Publication number: 20100036479
    Abstract: A stent frame including an annular portion having first and second ends, a central longitudinal axis, and a wire portion with at least two extending posts and a generally sinusoidal series of peaks and valleys between each of the at least two extending posts; an atrial portion extending from the first end of the annular portion, wherein the atrial portion includes a plurality of flares that extend radially outward relative to the longitudinal axis of the annular portion; and a ventricular portion extending from the second end of the annular portion, wherein the ventricular portion includes at least one flare that extends radially outward relative to the longitudinal axis of the annular portion.
    Type: Application
    Filed: April 23, 2009
    Publication date: February 11, 2010
    Applicant: Medtronic, Inc.
    Inventors: Alexander J. Hill, Mark J. Capps, Carol E. Eberhardt, Morgan M. House, Stuart R. MacDonald, Joseph C. Morrow, Jerald Redmond, Janice L. Shay, Timothy R. Ryan
  • Patent number: 6210396
    Abstract: The present invention comprises a tubular catheter shaft defining at least one catheter shaft lumen and a radiopaque band made of a polymeric material loaded with a radiopaque material of greater than 40% by weight, suitable for visualization under fluoroscopy in catheters in the range of 3 French to 5 French. The distal soft tip is formed of a relatively flexible polymeric material, loaded with radiopaque material which is less radiopaque than the radiopaque band. The radiopaque band's proximal end adjoins the distal end of the catheter shaft. The radiopaque band's distal end adjoins the proximal end of the distal tip to form an attachment junction. A tubular sleeve fits coaxially over the radiopaque band, the distal end of the catheter shaft and the proximal end of the distal soft tip.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: April 3, 2001
    Assignee: Medtronic, Inc.
    Inventors: Stuart R. MacDonald, Zelda M. Anastos, Albert H. Dunfee, Michael S. Noone
  • Patent number: 5545149
    Abstract: A therapeutic catheter and used in percutaneous transluminal coronary angioplasty with the catheter comprising a shaft (5) a soft tip assembly. The assembly consists of a transition tube (15), a soft tip tube (20), and plug tube (25). The assembly is surrounded by a shrink wrap means. An infrared source (45) is applied to the interface of the shaft (5) and transition tube (15) with the heat being propagated to the transition tube (15) and the soft tip tube (20). The transition tube (15) is formed of materials having a tensile strength of at least 150% of the materials comprising the soft tip tube (20).
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: August 13, 1996
    Assignee: Medtronic, Inc.
    Inventors: David S. Brin, Peter A. Lunn, Stuart R. MacDonald