Patents by Inventor David Holtan

David Holtan 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: 7648497
    Abstract: An elongated catheter device with a distal balloon assembly is adapted for endovascular insertion. Coolant injected through the device may, in different embodiments, directly cool tissue contacting the balloon, or may cool a separate internal chamber. In the first case, the coolant also inflates the balloon, and spent coolant is returned to the handle via a return passage extending through the body of the catheter. Plural balloons may be provided, wherein a secondary outer balloon surrounds a primary inner balloon, the primary balloon being filled with coolant and acting as the cooling chamber, the secondary balloon being coupled to a vacuum return lumen to serve as a robust leak containment device and thermal insulator around the cooling chamber. Various configurations, such as surface modification of the balloon interface, or placement of particles, coatings, or expandable meshes or coils in the balloon interface, may be employed to achieve this function.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: January 19, 2010
    Assignee: Medtronic Cryocath LP
    Inventors: Miriam Lane, Leonilda Capuano, David Holtan, Jean-Pierre Lalonde, Claudia Lückge, Jean-Luc Pageard, Marwan Abboud, Johnny Al Asmar, Abderrahim Benrabah, Ken Chen, John W. Lehmann, Philippe Marchand, Robert Martin, Fredric L. Milder, Daniel Nahon
  • Patent number: 7533742
    Abstract: The present invention is a powered hospital bed mover or bed transfer system. The bed mover includes a bed attachment mechanism that is vertically displaceable relative to a base that includes an electrically powered drive wheel and a pair of support castors. The attachment mechanism includes a pair of horizontally oriented jaws with jaw openings that face away from each other. Each jaw includes a contact switch in its bottom surface and a contact switch in its jaw opening. The contact switches indicate to the mover and its user that the mover is properly engaged with the frame of a hospital bed. The jaws are horizontally displaceable and diverge from each other to engage vertical frame members of a hospital bed. A control panel has a joystick adapted to control the speed and direction of travel for the mover. The control panel also has controls for actuating the jaws, changing the elevation of the attachment mechanism, and locking at least one of the support castors.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: May 19, 2009
    Assignee: Dane Industries, Inc.
    Inventors: Daniel T. Johnson, Paul David Holtan
  • Patent number: 7300433
    Abstract: An elongated catheter device with a distal balloon assembly is adapted for endovascular insertion. Coolant injected through the device may, in different embodiments, directly cool tissue contacting the balloon, or may cool a separate internal chamber. In the first case, the coolant also inflates the balloon, and spent coolant is returned to the handle via a return passage extending through the body of the catheter. Plural balloons may be provided, wherein a secondary outer balloon surrounds a primary inner balloon, the primary balloon being filled with coolant and acting as the cooling chamber, the secondary balloon being coupled to a vacuum return lumen to serve as a robust leak containment device and thermal insulator around the cooling chamber. Various configurations, such as surface modification of the balloon interface, or placement of particles, coatings, or expandable meshes or coils in the balloon interface, may be employed to achieve this function.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: November 27, 2007
    Assignee: Cryocath Technologies Inc.
    Inventors: Miriam Lane, Leonilda Capuano, David Holtan, Jean-Pierre Lalonde, Claudia Lückge, Jean-Luc Pageard, Marwan Abboud, Johnny Al Asmar, Abderrahim Benrabah, Ken Chen, John W. Lehmann, Philippe Marchand, Robert Martin, Fredric L. Milder, Daniel Nahon
  • Publication number: 20060100662
    Abstract: An emboli capturing system captures emboli in a body lumen. A first elongate member has a proximal end and a distal end. An expandable emboli capturing device is mounted proximate the distal end of the first elongate member, and is movable between a radially expanded position and a radially contracted position. When in the expanded position, the emboli capturing device forms a basket with a proximally opening mouth. A second elongate member has a proximal and a distal end with a lumen extending therebetween. The lumen is sized to slidably receive a portion of the first elongate member. An expandable delivery device is mounted to the distal end of the second elongate member and is movable from a radially retracted position to a radially expanded position. The delivery device has a receiving end configured to receive the emboli capturing device, and retains at least the mouth of the emboli capturing device in a radially retracted position.
    Type: Application
    Filed: December 21, 2005
    Publication date: May 11, 2006
    Inventors: John Daniel, Thomas Broome, David Holtan, Robert Cassell, Daniel Adams
  • Publication number: 20060030843
    Abstract: An elongated catheter device with a distal balloon assembly is adapted for endovascular insertion. Coolant injected through the device may, in different embodiments, directly cool tissue contacting the balloon, or may cool a separate internal chamber. In the first case, the coolant also inflates the balloon, and spent coolant is returned to the handle via a return passage extending through the body of the catheter. Plural balloons may be provided, wherein a secondary outer balloon surrounds a primary inner balloon, the primary balloon being filled with coolant and acting as the cooling chamber, the secondary balloon being coupled to a vacuum return lumen to serve as a robust leak containment device and thermal insulator around the cooling chamber. Various configurations, such as surface modification of the balloon interface, or placement of particles, coatings, or expandable meshes or coils in the balloon interface, may be employed to achieve this function.
    Type: Application
    Filed: October 6, 2005
    Publication date: February 9, 2006
    Inventors: Miriam Lane, Leonilda Capuano, David Holtan, Jean-Pierre Lalonde, Claudia Luckge, Jean-Luc Pageard, Marwan Abboud, Johnny Asmar, Abderrahim Benrabah, Ken Chen, John Lehmann, Philippe Marchand, Robert Martin, Fredric Milder, Daniel Nahon
  • Publication number: 20050119691
    Abstract: An emboli capturing system captures emboli in a body lumen. A first elongate member has a proximal end and a distal end. An expandable emboli capturing device is mounted proximate the distal end of the first elongate member, and is movable between a radially expanded position and a radially contracted position. When in the expanded position, the emboli capturing device forms a basket with a proximally opening mouth. A second elongate member has a proximal and a distal end with a lumen extending therebetween. The lumen is sized to slidably receive a portion of the first elongate member. An expandable delivery device is mounted to the distal end of the second elongate member and is movable from a radially retracted position to a radially expanded position. The delivery device has a receiving end configured to receive the emboli capturing device, and retains at least the mouth of the emboli capturing device in a radially retracted position.
    Type: Application
    Filed: January 12, 2005
    Publication date: June 2, 2005
    Inventors: John Daniel, Thomas Broome, David Holtan, Robert Cassell, Daniel Adams
  • Publication number: 20050101986
    Abstract: An emboli capturing system captures emboli in a body lumen. A first elongate member has a proximal end and a distal end. An expandable emboli capturing device is mounted proximate the distal end of the first elongate member, and is movable between a radially expanded position and a radially contracted position. When in the expanded position, the emboli capturing device forms a basket with a proximally opening mouth. A second elongate member has a proximal and a distal end with a lumen extending therebetween. The lumen is sized to slidably receive a portion of the first elongate member. An expandable delivery device is mounted to the distal end of the second elongate member and is movable from a radially retracted position to a radially expanded position. The delivery device has a receiving end configured to receive the emboli capturing device, and retains at least the mouth of the emboli capturing device in a radially retracted position.
    Type: Application
    Filed: August 28, 2003
    Publication date: May 12, 2005
    Inventors: John Daniel, Thomas Broome, David Holtan, Robert Cassell, Daniel Adams
  • Publication number: 20030187428
    Abstract: An elongated catheter device with a distal balloon assembly is adapted for endovascular insertion. Coolant injected through the device may, in different embodiments, directly cool tissue contacting the balloon, or may cool a separate internal chamber. In the first case, the coolant also inflates the balloon, and spent coolant is returned to the handle via a return passage extending through the body of the catheter. Plural balloons may be provided, wherein a secondary outer balloon surrounds a primary inner balloon, the primary balloon being filled with coolant and acting as the cooling chamber, the secondary balloon being coupled to a vacuum return lumen to serve as a robust leak containment device and thermal insulator around the cooling chamber. Various configurations, such as surface modification of the balloon interface, or placement of particles, coatings, or expandable meshes or coils in the balloon interface, may be employed to achieve this function.
    Type: Application
    Filed: March 26, 2003
    Publication date: October 2, 2003
    Inventors: Miriam Lane, Leonilda Capuano, David Holtan, Jean-Pierre Lalonde, Claudia Luckge, Jean-Luc Pageard, Marwan Abboud, Johnny Al Asmar, Abderrahim Benrabah, Ken Chen, John W. Lehmann, Philippe Marchand, Robert Martin, Fredric L. Milder, Daniel Nahon
  • Patent number: 6575966
    Abstract: An elongated catheter device with a distal balloon assembly is adapted for endovascular insertion. Coolant injected through the device may, in different embodiments, directly cool tissue contacting the balloon, or may cool a separate internal chamber. In the first case, the coolant also inflates the balloon, and spent coolant is returned to the handle via a return passage extending through the body of the catheter. Plural balloons may be provided, wherein a secondary outer balloon surrounds a primary inner balloon, the primary balloon being filled with coolant and acting as the cooling chamber, the secondary balloon being coupled to a vacuum return lumen to serve as a robust leak containment device and thermal insulator around the cooling chamber. Various configurations, such as surface modification of the balloon interface, or placement of particles, coatings, or expandable meshes or coils in the balloon interface, may be employed to achieve this function.
    Type: Grant
    Filed: August 31, 2001
    Date of Patent: June 10, 2003
    Assignee: CryoCath Technologies Inc.
    Inventors: Miriam Lane, Leonilda Capuano, David Holtan, Jean-Pierre Lalonde, Claudia Lückge, Jean-Luc Pageard, Marwan Abboud, Johnny Al Asmar, Abderrahim Benrabah, Ken Chen, John W. Lehmann, Philippe Marchand, Robert Martin, Fredric L. Milder, Daniel Nahon
  • Publication number: 20020045893
    Abstract: An elongated catheter device with a distal balloon assembly is adapted for endovascular insertion. Coolant injected through the device may, in different embodiments, directly cool tissue contacting the balloon, or may cool a separate internal chamber. In the first case, the coolant also inflates the balloon, and spent coolant is returned to the handle via a return passage extending through the body of the catheter. Plural balloons may be provided, wherein a secondary outer balloon surrounds a primary inner balloon, the primary balloon being filled with coolant and acting as the cooling chamber, the secondary balloon being coupled to a vacuum return lumen to serve as a robust leak containment device and thermal insulator around the cooling chamber. Various configurations, such as surface modification of the balloon interface, or placement of particles, coatings, or expandable meshes or coils in the balloon interface, may be employed to achieve this function.
    Type: Application
    Filed: August 31, 2001
    Publication date: April 18, 2002
    Inventors: Miriam Lane, Leonilda Capuano, David Holtan, Jean-Pierre Lalonde, Claudia Luckge, Jean-Luc Pageard, Marwan Abboud, Johnny Al Asmar, Abderrahim Benrabah, Ken Chen, John W. Lehmann, Philippe Marchand, Robert Martin, Fredric L. Milder, Daniel Nahon