Patents Assigned to Lake Region Manufacturing Co., Inc.
  • Patent number: 6193706
    Abstract: A guidewire extension system including a guidewire and an extension wire is disclosed. The system includes female and male connector segments located on the proximal end of the guidewire or the distal end of the extension wire. The hollow female connector segment, in one embodiment, includes a radial lip which intersects with at least one, i.e., one or more, lateral slots. The male connector segment includes an external groove. When the male connector is inserted into the female connector segment, the slots are expanded and the lip snaps into the groove providing a tactile indication that connection is completed. No restriction or frictional fit is created. The guidewire and extension wire are freely rotatable with respect to each other and can be multiply connected and disconnected. Methods of catheter exchange with tactile indication of guidewire extension wire connection are disclosed.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: February 27, 2001
    Assignee: Lake Region Manufacturing Co., Inc.
    Inventors: Michael S. Thorud, Robert L. Assell, Victor R. Blackledge
  • Patent number: 5443081
    Abstract: A wire containing or dispensing article and method are disclosed. The invention is used to dispense wire from a tubular wire carrier. The invention is particularly useful for containing/dispensing a guidewire, especially a coated guidewire. The article is an elongate dispensing sleeve or collar having an axial hole or bore through which a wire may pass. The sleeve has a cylindrical sleeve body with lateral projections on its outside and a plurality of transverse slits passing through its wall. The lateral projections and slits cooperate to permit wire to be restrictively engaged at the bore and to be controllably dispensed from the carrier by the partial insertion and removal of the sleeve into and out of the carrier. The method is controllable dispensing of the wire from the carrier by utilization of the article.
    Type: Grant
    Filed: January 4, 1994
    Date of Patent: August 22, 1995
    Assignee: Lake Region Manufacturing Co., Inc.
    Inventor: James J. Klosterman
  • Patent number: 5373619
    Abstract: A hollow lumen cable is formed by helically winding inner and outer coils with the helices of each coil being in an abutting relationship and the outer coil inner diameter being less than the outer, peripheral, diameter of the inner coil. Preferably, each coil is multifilar. After the coils are wound, an unwinding force is applied to the outer coil and the inner coil is inserted into the outer coil to have its winding inclined opposite to that of the outer coil; and thence, the outer coil is allowed to contract to form an interference fit with the inner coil. The cable may be incorporated as part of various medical systems e.g., implantable pumps or other rotatable medical apparatuses. The cable is bendable about the tight radii, has a high torque transfer, a small outer diameter, and a hollow lumen through which fluid, wires or medical devices may pass.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: December 20, 1994
    Assignee: Lake Region Manufacturing Co., Inc.
    Inventors: Mark G. Fleischhacker, Joseph F. Fleischhacker, Jr., Thomas E. Hargreaves, Donald W. Hanson
  • Patent number: 5360403
    Abstract: An apparatus for and method of selectively occluding a lumen of a multilumen catheter during a medical procedure. The catheter may have any variety of functions of either diagnostic and/or therapeutic nature. A first open lumen to be occluded may have one or more orifices at the distal tip and/or in the side wall of the catheter for infusion of a liquid, injection of a dye, or operation of a guide wire or other control device. A small balloon adjacent the lumen to be occluded is inflated with fluid from a second, closed lumen. Whenever the small balloon is completely inflated, the first, open lumen is occluded. Whenever the small balloon is deflated, the lumen is open to the orifices distal to the small balloon.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: November 1, 1994
    Assignee: Lake Region Manufacturing Co., Inc.
    Inventor: Hans A. Mische
  • Patent number: 5282478
    Abstract: An extendable guidewire system including a guidewire and extension wire bearing separate helical coil connectors. The coil connectors, at least in part, have spatially separate adjacent coil turns, thereby providing gaps for receiving coil turns of the other connector.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: February 1, 1994
    Assignees: Baxter International, Inc., Lake Region Manufacturing Co., Inc.
    Inventors: Joseph F. Fleischhaker, Jr., Sheryl Higgins, Michael C. Schiffer, Scott Evans
  • Patent number: 5211636
    Abstract: A guide wire having state-of-the-art handling characteristics for ease in positioning a variety of catheters and other devices within the cardiovascular or other body system wherein the guide wire is also suitable for infusion of small volumes of fluid. The exceedingly small diameter guide wire has unique infusion properties. The guide wire body has at least one helical coil having a flexible nonporous sheath within the lumen. The helical coil is close wound along the majority of its length. The distal end of the helical coil has spaced windings to permit infusion of the fluid. The flexible nonporous sheath terminates proximal to the space wound portion. The solid core wire, which runs the entire length of the guide wire, is located within the same lumen used for infusion. This provides a greatly increased surface area in relation to the cross sectional area of the infusion lumen ensuring a slow but extremely constant infusion rate over a wide range of infusion pressures.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: May 18, 1993
    Assignee: Lake Region Manufacturing Co., Inc.
    Inventor: Hans A. Mische
  • Patent number: 5165421
    Abstract: A hollow lumen cable is formed by helically winding inner and outer coils with the helices of each coil being in an abutting relationship and the outer coil inner peripheral diameter being less than the outer peripheral diameter of the inner coil. Preferably, each coil is multifilar. After the coils are wound, an unwinding force is applied to the outer coil and the inner coil is inserted into the outer coil to have its winding inclined opposite to that of the outer coil; and thence, the outer coil is allowed to contract to form an interference fit with the inner coil. The cable may be incorporated as part of a medical apparatus. For example, the cable distal end is connected to an implantable pump or other rotatable medical apparatus and the proximal end to a powered prime mover.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: November 24, 1992
    Assignee: Lake Region Manufacturing Co., Inc.
    Inventors: Mark G. Fleischhacker, Joseph F. Fleischhacker, Jr.
  • Patent number: 5154705
    Abstract: A hollow lumen cable is formed by helically winding inner and outer coils with the helices of each coil being in an abutting relationship and the outer coil inner peripheral diameter being less than the outer peripheral diameter of the inner coil. Preferably, each coil is multifilar. After the coils are wound, an unwinding force is applied to the outer coil and the inner coil is inserted into the outer coil to have its winding inclined opposite to that of the outer coil; and thence, the outer coil is allowed to contract to form an interference fit with the inner coil. The cable may be incorporated as part of a medical apparatus. The cable is bendable about the tight radii and has a high torque transfer resolution while having a small cable outer diameter, a relatively long life, and has a hollow lumen in which there is no structure or through which fluid, wires or medical devices may pass.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: October 13, 1992
    Assignee: Lake Region Manufacturing Co., Inc.
    Inventors: Mark G. Fleischhacker, Joseph F. Fleischhacker, Jr., Thomas E. Hargreaves, Donald W. Hanson
  • Patent number: 5117839
    Abstract: An apparatus providing the benefits of a catheter with a fixed guidewire, while retaining the advantages of a catheter with an adjustable, removable, and exchangeable guidewire. The catheter may be designed for use in the urinary tract, cardiovascular system, or other body passages. The guidewire is advanced through the catheter from the proximal to the distal end for the required distance. This may be sufficient to make the catheter and the guidewire coextensive or to make either the catheter or guidewire protrude from the distal end, as desired. The guidewire may be secured to the proximal end of the catheter by rotation of a compressible fixation device. The connection is frictionally sealed. The guidewire may be rotated with respect to the catheter in the same manner as with a fixed wire catheter. Opposite rotation of the compressible fixation device frees the guidewire for removal, advancement or exchange.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: June 2, 1992
    Assignee: Lake Region Manufacturing Co., Inc.
    Inventor: Creg W. Dance
  • Patent number: 5069217
    Abstract: A steerable guide wire for use in a medical procedure, such as coronary angioplasty, which requires positioning a catheter or other device at a remote location within the body by way of the cardiovascular system or other passage way. The guide wire has a solid core wire which runs the entire length. The distal end of the core wire is tapered to an intermediate diameter to permit insertion into a short flexible coil, or a combination of a flat wire coil and round wire coil attach to each other at a brazed joint. The flexible coil has an outside diameter approximately equal to the outside diameter of the core wire proximal to the taper. The proximal end of the flexible coil is fixedly attached to the taper. The distal tip of the core wire is further tapered and optionally flattened to enhance the handling characteristics as well as flexibility. The distal tip of the core wire and a flexible round wire coil are coextensive, and attached distally to form a smooth tip for the guide wire.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: December 3, 1991
    Assignee: Lake Region Manufacturing Co., Inc.
    Inventor: Joseph F. Fleischhacker, Jr.