Patents by Inventor Christopher R. Larson

Christopher R. Larson 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: 6605056
    Abstract: A medical device comprises an inner tube and an outer tube disposed about at least a portion of the inner tube. A balloon extends from the distal end of the outer tube. Within the balloon is a first expandable diaphragm, one end of which is attached to the inner tube. The first expandable diaphragm is covered by a retractable sheath disposed about the inner tube. Upon retraction of the retractable sheath, the diaphragm expands to sealingly contact the interior of the balloon in a first contact region and form at least a first compartment and a second compartment in the balloon.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: August 12, 2003
    Assignee: SciMed Life Systems, Inc.
    Inventors: Tracee E. J. Eidenschink, Richard C. Mattison, Christopher R. Larson
  • Publication number: 20030056360
    Abstract: A stent crimper comprising a plurality of crimping members extending between a first support and a second support. The first and optionally the second supports has an opening therethrough sized to allow a stent therethrough. The first and second supports extend from a base. The crimping members are disposed about the circumference of a circle everywhere along the length of the members. Finally, the flexible members extend through a bore in a die. The die is movable in an axial direction along the flexible members.
    Type: Application
    Filed: September 22, 1999
    Publication date: March 27, 2003
    Inventors: TERRY V. BROWN, ANDREW J. DUSBABEK, LOUIS G. ELLIS, SCOTT M. HANSON, LEO M. KLISCH, CHRISTOPHER R. LARSON, LINDA R. LORENTZEN CORNELIUS, JUSTIN E. PLESSAL, LAWRENCE W. ULANOWSKI
  • Publication number: 20030055401
    Abstract: A spiral cut transition member is disclosed for controlling the transition in stiffness of a catheter from a stiffer more pushable proximal section to a more flexible and trackable distal section and increasing kink resistance. The transition member has a spiral cut provided therein to vary the flexibility of the transition member over its length. The pitch of the spiral cut can be varied to facilitate a gradual transition in flexibility along the catheter. The transition member may be used in conjunction with any type of catheter including single-operator-exchange type catheters, over-the wire type catheters, and/or fixed-wire type catheters.
    Type: Application
    Filed: November 1, 2002
    Publication date: March 20, 2003
    Applicant: SciMed Life Systems, Inc.
    Inventors: Christopher R. Larson, Angela J. Kornkven
  • Publication number: 20030014007
    Abstract: A medical device comprises an inner tube and an outer tube disposed about at least a portion of the inner tube. A balloon extends from the distal end of the outer tube. Within the balloon is a first expandable diaphragm, one end of which is attached to the inner tube. The first expandable diaphragm is covered by a retractable sheath disposed about the inner tube. Upon retraction of the retractable sheath, the diaphragm expands to sealingly contact the interior of the balloon in a first contact region and form at least a first compartment and a second compartment in the balloon.
    Type: Application
    Filed: July 11, 2001
    Publication date: January 16, 2003
    Inventors: Tracee E.J. Eidenschink, Richard C. Mattison, Christopher R. Larson
  • Patent number: 6475209
    Abstract: A spiral cut transition member is disclosed for controlling the transition in stiffness of a catheter from a stiffer more pushable proximal section to a more flexible and trackable distal section and increasing kink resistance. The transition member has a spiral cut provided therein to vary the flexibility of the transition member over its length. The pitch of the spiral cut can be varied to facilitate a gradual transition in flexibility along the catheter. The transition member may be used in conjunction with any type of catheter including single-operator-exchange type catheters, over-the wire type catheters, and/or fixed-wire type catheters.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: November 5, 2002
    Assignee: SciMed Life Systems, Inc.
    Inventors: Christopher R. Larson, Angela Kornkven Volk
  • Patent number: 6471672
    Abstract: A high pressure dilation medical device delivery catheter having a proximal and distal end comprising two tubes mounted generally concentrically about an inner tube. The balloons being characterized as a relatively short inner tube which is inflated with high pressure and a longer outer tube which is inflated with low pressure. The balloons have independent inflation lumens which extend toward the proximal end of the inner tube. A medical device mounting region is disposed about at least a portion of the outer balloon and may have a stent or other medical device mounted thereupon. A retractable outer sheath is further disposed about the medical device mounting region and is operatively connected near the proximal end of the catheter.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: October 29, 2002
    Assignee: SciMed Life Systems
    Inventors: Brian J. Brown, Tracee E. J. Eidenschink, Christopher R. Larson
  • Publication number: 20020123794
    Abstract: A stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state: a stent positioned around the distal portion of the catheter having a contracted condition and being expandable to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the expandable distal portion of the catheter including a balloon within which there is included on the catheter shaft at least one body of a diameter larger than the catheter shaft to which the stent and balloon are fitted, as by crimping, for holding the stent in place until it is released therefrom by expansion of the balloon.
    Type: Application
    Filed: April 16, 2002
    Publication date: September 5, 2002
    Inventors: Louis G. Ellis, Andrew J. Dusbabek, Christopher R. Larson, Terry V. Brown
  • Patent number: 6387117
    Abstract: An apparatus for reducing a medical device such as a stent in size is formed of cooperating crimping dies which are joined via a crimping die moving device. As the cooperating dies are moved together, an inward force is applied to the medical device to reduce the medical device in size.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: May 14, 2002
    Assignee: SciMed Life Systems, Inc.
    Inventors: John E. Arnold, Jr., Terry V. Brown, Andrew J. Dusbabek, Christopher J. Elliott, Louis G. Ellis, Christopher R. Larson, Gary J. Leanna
  • Publication number: 20020049466
    Abstract: An angioplasty and stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state: a stent positioned around the distal portion of the catheter having a contracted condition and being expandable to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the expandable distal portion of the catheter including a balloon within which or over which there is included on a catheter shaft at least one axially movable or enlargeable body of a diameter larger than the catheter shaft to which the stent and balloon are fitted, as by crimping, for holding the stent in place until it is released therefrom by expansion of the balloon.
    Type: Application
    Filed: December 4, 2001
    Publication date: April 25, 2002
    Inventors: Charles I. Euteneuer, Christopher R. Larson, Steven P. Mertens, Richard C. Mattison, David J. Blaeser, Louis G. Ellis, Andrew J. Dusbabek, Terry V. Brown
  • Patent number: 6371962
    Abstract: A stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state: a stent positioned around the distal portion of the catheter having a contracted condition and being expandable to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the expandable distal portion of the catheter including a balloon within which there is included on the catheter shaft at least one body of a diameter larger than the catheter shaft to which the stent and balloon are fitted, as by crimping, for holding the stent in place until it is released therefrom by expansion of the balloon.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: April 16, 2002
    Assignee: Scimed Life Systems, Inc.
    Inventors: Louis G. Ellis, Andrew J. Dusbabek, Christopher R. Larson, Terry V. Brown
  • Patent number: 6325814
    Abstract: An angioplasty and stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state: a stent positioned around the distal portion of the catheter having a contracted condition and being expandable to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the expandable distal portion of the catheter including a balloon within which or over which there is included on a catheter shaft at least one axially movable or enlargeable body of a diameter larger than the catheter shaft to which the stent and balloon are fitted, as by crimping, for holding the stent in place until it is released therefrom by expansion of the balloon.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: December 4, 2001
    Assignee: SciMed Life Systems, Inc.
    Inventors: Charles L. Euteneuer, Christopher R. Larson, Steven P. Mertens, Richard C. Mattison, David J. Blaeser, Louis G. Ellis, Andrew J. Dusbabek, Terry V. Brown
  • Publication number: 20010007082
    Abstract: A system/assembly for delivery and deployment of an inflation expandable stent within a vessel, comprising a catheter having proximal and distal ends; a stent, inflation expandable from a delivery diameter to a deployment diameter, such that the delivery diameter is reduced from the deployment diameter for conforming the stent to the catheter, such that the stent, in its delivery diameter, is coaxially mounted on the catheter near the catheter distal end; an expandable inflation means coaxially mounted on the catheter axially within the stent, for expansion of the stent from the delivery diameter to the deployment diameter upon application of fluid deployment pressure to the inflation means; and a securement component coaxially mounted on the catheter, axially within the expandable inflation means, the securement component designed and adapted to provide a securement pressure to the stent in the delivery diameter to maintain the stent in position on the catheter during delivery to the deployment site.
    Type: Application
    Filed: February 27, 2001
    Publication date: July 5, 2001
    Inventors: Andrew J. Dusbabek, Louis G. Ellis, Christopher R. Larson, Terry V. Brown, Charles L. Euteneuer, Steven P. Mertens, Richard C. Mattison, David J. Blaeser, Linda R. Lorentzen, Martin R. Willard, Fernando Di Caprio, Stanley A. Nordin
  • Patent number: 6203558
    Abstract: A system/assembly for delivery and deployment of an inflation expandable stent within a vessel, comprising a catheter having proximal and distal ends; a stent, inflation expandable from a delivery diameter to a deployment diameter, such that the delivery diameter is reduced from the deployment diameter for conforming the stent to the catheter, such that the stent, in its delivery diameter, is coaxially mounted on the catheter near the catheter distal end; an expandable inflation member coaxially mounted on the catheter axially within the stent, for expansion of the stent from the delivery diameter to the deployment diameter upon application of fluid deployment pressure to the inflation member; and a securement component coaxially mounted on the catheter, axially within the expandable inflation members, the securement component designed and adapted to provide a securement pressure to the stent in the delivery diameter to maintain the stent in position on the catheter during delivery to the deployment site.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: March 20, 2001
    Assignee: SciMed Life Systems, Inc.
    Inventors: Andrew J. Dusbabek, Louis G. Ellis, Christopher R. Larson, Terry V. Brown, Charles L. Euteneuer, Steven P. Mertens, Richard C. Mattison, David J. Blaeser, Linda R. Lorentzen Cornelius, Martin R. Willard, Fernando Di Caprio, Stanley A. Nordin
  • Patent number: 6113579
    Abstract: A catheter is disclosed which includes an over-the-wire type balloon catheter with a guide wire wherein the catheter includes a polyethylene inner tube and an outer tube having a relatively stiff proximal outer section, a midshaft section of lesser stiffness, and a tapering distal outer section of the least stiffness. An inflatable balloon is connected to the distal ends of the inner tube and the outer tube. The guide wire may be removed from and inserted into the guide wire lumen at either end of the catheter.
    Type: Grant
    Filed: March 4, 1998
    Date of Patent: September 5, 2000
    Assignee: SciMed Life Systems, Inc.
    Inventors: Tracee E. J. Eidenschink, Timothy J. Mickley, Christopher R. Larson, Steven P. Mertens, Charles L. Euteneuer
  • Patent number: 6077273
    Abstract: An angioplasty and stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state: a stent positioned around the distal portion of the catheter having a contracted condition and being expandable to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the expandable distal portion of the catheter including a balloon within which or over which there is included on a catheter shaft at least one axially movable or enlargeable body of a diameter larger than the catheter shaft to which the stent and balloon are fitted, as by crimping, for holding the stent in place until it is released therefrom by expansion of the balloon.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: June 20, 2000
    Assignee: SciMed Life Systems, Inc.
    Inventors: Charles L. Euteneuer, Christopher R. Larson, Steven P. Mertens, Richard C. Mattison, David J. Blaeser, Louis G. Ellis, Andrew J. Dusbabek, Terry V. Brown
  • Patent number: 6048338
    Abstract: A spiral cut transition member is disclosed for controlling the transition in stiffness of a catheter from a stiffer more pushable proximal section to a more flexible and trackable distal section and increasing kink resistance. The transition member has a spiral cut provided therein to vary the flexibility of the transition member over its length. The pitch of the spiral cut can be varied to facilitate a gradual transition in flexibility along the catheter. The transition member may be used in conjunction with any type of catheter including single-operator-exchange type catheters, over-the wire type catheters, and/or fixed-wire type catheters.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: April 11, 2000
    Assignee: SciMed Life Systems, Inc.
    Inventors: Christopher R. Larson, Angela J. Kornkven
  • Patent number: 6007543
    Abstract: A stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state: a stent positioned around the distal portion of the catheter having a contracted condition and being expandable to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the expandable distal portion of the catheter including a balloon within which there is included on the catheter shaft at least one body of a diameter larger than the catheter shaft to which the stent and balloon are fitted, as by crimping, for holding the stent in place until it is released therefrom by expansion of the balloon.
    Type: Grant
    Filed: August 23, 1996
    Date of Patent: December 28, 1999
    Assignee: SciMed Life Systems, Inc.
    Inventors: Louis G. Ellis, Andrew J. Dusbabek, Christopher R. Larson, Terry V. Brown
  • Patent number: 5992000
    Abstract: An apparatus for crimping a stent to a catheter as well as a method for crimping a stent to a catheter are disclosed in several embodiments. The apparatus in its various embodiments involves the application of a uniform radially inward force to a compressible tube in which the stent and catheter are situated.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: November 30, 1999
    Assignee: SciMed Life Systems, Inc.
    Inventors: John W. Humphrey, Terry V. Brown, Charles L. Euteneuer, Nam H. Hoang, Leo M. Klisch, Christopher R. Larson, Jonathan C. Sell, Vladimir B. Tsukernik, Lawrence W. Ulanowski
  • Patent number: 5968069
    Abstract: A system/assembly for delivery and deployment of an inflation expandable stent within a vessel, comprising a catheter having proximal and distal ends; a stent, inflation expandable from a delivery diameter to a deployment diameter, such that the delivery diameter is reduced from the deployment diameter for conforming the stent to the catheter, such that the stent, in its delivery diameter, is coaxially mounted on the catheter near the catheter distal end; an expandable inflation means coaxially mounted on the catheter axially within the stent, for expansion of the stent from the delivery diameter to the deployment diameter upon application of fluid deployment pressure to the inflation means; and a securement component coaxially mounted on the catheter, axially within the expandable inflation means, the securement component designed and adapted to provide a securement pressure to the stent in the delivery diameter to maintain the stent in position on the catheter during delivery to the deployment site.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: October 19, 1999
    Assignee: SciMed Life Systems, Inc.
    Inventors: Andrew J. Dusbabek, Louis G. Ellis, Christopher R. Larson, Terry V. Brown, Charles L. Euteneuer, Steven P. Mertens, Richard C. Mattison, David J. Blaeser, Linda R. Lorentzen Cornelius, Martin R. Willard, Fernando Di Caprio, Stanley A. Nordin
  • Patent number: 5961536
    Abstract: A variable length balloon catheter is provided. The balloon catheter includes a catheter shaft having a distal portion, a balloon and an adjustment device. The balloon is in fluid communication with a distal end of the catheter shaft. The adjustment device includes an outer sleeve and an attachment structure. The outer sleeve is configured to be generally co-axially received over the distal portion of the catheter shaft and includes a distal end configured to restrict inflation proximal the distal end. Further, the outer sleeve is configured such that at least a portion of the outer sleeve is slidable relative to the distal portion of the catheter shaft such that a distal end of the outer sleeve relative to the balloon can be varied.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: October 5, 1999
    Assignee: SciMed Life Systems, Inc.
    Inventors: Timothy J. Mickley, Steven P. Mertens, Christopher R. Larson, Chad G. Harris, John H. Carlson, II