Patents by Inventor Kelly J. Christian

Kelly J. Christian 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: 20090156926
    Abstract: An integrated catheter placement system for accurately placing a catheter within a patient'vasculature is disclosed. In one embodiment, the integrated system comprises a system console, a tip location sensor for temporary placement on the patient's chest, and an ultrasound probe. The tip location sensor senses a magnetic field of a stylet disposed in a lumen of the catheter when the catheter is disposed in the vasculature. The ultrasound probe ultrasonically images a portion of the vasculature prior to intravascular introduction of the catheter. The ultrasound probe includes user input controls for controlling use of the ultrasound probe in an ultrasound mode and use of the tip location sensor in a tip location mode. In another embodiment, ECG signal-based catheter tip guidance is included in the integrated system to enable guidance of the catheter tip to a desired position with respect to a node of the patient's heart.
    Type: Application
    Filed: November 25, 2008
    Publication date: June 18, 2009
    Applicant: C.R. Bard, Inc.
    Inventors: Shayne MESSERLY, Jeremy B. Cox, Anthony K. Misener, Catherine C. Breiter, Ryan R. Lemon, Christian K. Crook, Matthew W. Bown, Eddie K. Burnside, Kelly J. Christian, Amir Orome, Jason R. Stats
  • Publication number: 20090156928
    Abstract: An implantable multi-lumen access port including indicators for ascertaining characteristics of the port is disclosed. In one embodiment, the access port comprises a housing that defines a first reservoir and a second reservoir. A first septum and second septum are respectively coupled with the housing to provide selective access to the first and second reservoirs. Each septum includes a plurality of protrusions defined about a periphery thereof that are palpable after implantation of the port in a patient to determine a relative position of the first septum with respect to the second septum. A radiographically observable indicator is also included on a base of the housing, so as to provide information relating to a characteristic of the dual-lumen port, such as suitability for power injection of fluids. The indicator in one embodiment includes a substantially rigid radiopaque component.
    Type: Application
    Filed: November 7, 2008
    Publication date: June 18, 2009
    Applicant: C. R. Bard, Inc.
    Inventors: John G. Evans, Mark Henry Vader, Murtaza Amin, David M. Cise, Kelly J. Christian
  • Patent number: 6916307
    Abstract: A balloon catheter having a balloon disposed upon an elongate shaft near a relatively rigid distal insertion tip, a fluid lumen for fluid communication with a body cavity and an inflation lumen for fluid communication with the balloon. The balloon holds the catheter tip within a body cavity such as the stomach for long-term enteral feeding. The balloon is configured such that upon inflation, the balloon distends distally to cover the distal tip thus insulating it from sensitive anatomy.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: July 12, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Allan F. Willis, Kelly J. Christian, Mike Kenowski
  • Publication number: 20020032407
    Abstract: A balloon catheter having a balloon disposed upon an elongate shaft near a relatively rigid distal insertion tip, a fluid lumen for fluid communication with a body cavity and an inflation lumen for fluid communication with the balloon. The balloon holds the catheter tip within a body cavity such as the stomach for long-term enteral feeding. The balloon is configured such that upon inflation, the balloon distends distally to cover the distal tip thus insulating it from sensitive anatomy.
    Type: Application
    Filed: June 22, 2001
    Publication date: March 14, 2002
    Inventors: Allan F. Willis, Kelly J. Christian, Mike Kenowski
  • Patent number: 6264631
    Abstract: A balloon catheter having a balloon disposed upon an elongate shaft near a relatively rigid distal insertion tip, a fluid lumen for fluid communication with a body cavity and an inflation lumen for fluid communication with the balloon. The balloon holds the catheter tip within a body cavity such as the stomach for long-term enteral feeding. The balloon is configured such that upon inflation, the balloon distends distally to cover the distal tip thus insulating it from sensitive anatomy.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: July 24, 2001
    Assignee: Ballard Medical Products
    Inventors: Allan F. Willis, Kelly J. Christian, Mike Kenowski
  • Patent number: 6213973
    Abstract: An elongated access port has a needle-impenetrable housing enclosing a fluid reservoir. The housing includes a base having a floor with an upstanding encircling sidewall and a cap having a top wall with a depending encircling skirt. The skirt of the cap receives the sidewall of the base. An access aperture extends through the top wall of the cap to communicate with the fluid reservoir. The access aperture is encircled by a continuous rim having an elongated shape in the plane of the access aperture. The rim of the access aperture may be elliptical, oval, polygonal, or parabolic-ended. An elastomeric, needle-penetrable, generally planar septum is disposed in the access aperture with the periphery of the septum in sealing engagement with the rim of the access aperture. Prior to installation, the septum has a periphery with a cross section in the plane of the septum that is geometrically proportional to and larger than the shape of the access aperture.
    Type: Grant
    Filed: January 12, 1998
    Date of Patent: April 10, 2001
    Assignee: C. R. Bard, Inc.
    Inventors: Kenneth A. Eliasen, Kelly B. Powers, Kelly J. Christian
  • Patent number: 6113572
    Abstract: A catheter connection system is defined by a rigid, tubular stem attached at a proximal end thereof to a medical device. The stem has a plurality of engagement barbs encircling and radially, outwardly extending on an exterior surface of the stem. The engagement barbs can be configured having a variety of different sizes and positions. A locking barb also encircles and radially, outwardly extends on the surface of the stem between the medical device and the engagement barbs. A variety of fastening assemblies are provided for inwardly compressing a portion of a body wall of a selected catheter against the engagement barbs on the stem, when the stem is received in the lumen of the selected catheter. The fastening assemblies create a mechanical joinder and liquid-tight seal between the selected catheter and the stem. The selected catheter can be chosen from one of three or more catheters each having a combination of size and material composition distinct from the other of the catheters.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: September 5, 2000
    Assignee: C. R. Bard, Inc.
    Inventors: Robert Nelson Gailey, Kelly B. Powers, Kelly J. Christian, Kenneth Arden Eliasen, Donald James Jones
  • Patent number: 6086555
    Abstract: A vascular access port enclosing a pair of distinct fluid reservoirs includes a two-piece housing that captures an integrally-formed compound septum to seal both of the fluid reservoirs for selective access with a hypodermic needle. The housing includes a base that defines the fluid reservoirs and a cap in which the base is received with the compound septum therebetween. The compound septum includes two distinct target domes that are exposed to the exterior of the housing through respective access apertures in the cap, when the compound septum is captured in the housing. A planar septum web interconnects and encircles the target domes. The side of the septum web opposite from the target domes is formed into a recessed isolation groove that traverses the septum web between the target domes. Sealing ridges depend from this side of the septum web on either side of the isolation groove. The outlet stem of the access port is integrally formed with the base of the housing.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: July 11, 2000
    Assignee: C. R. Bard, Inc.
    Inventors: Kenneth A. Eliasen, Kelly B. Powers, Ronald O. Campbell, Guy T. Rome, Kelly J. Christian
  • Patent number: 5997546
    Abstract: A balloon catheter with improved balloon orientation includes a head, a catheter segment extending from the head, and a balloon disposed on the catheter segment opposite the head. Preferably, the balloon is attached to the exterior of the catheter segment at a proximal location and to the interior of the catheter segment at a distal location to thereby form a balloon which extends distally from the distal end of the catheter segment when inflated. The improved orientation of the balloon helps to prevent contact between the distal end of the catheter segment and anatomical structures of the user, thereby reducing irritation.
    Type: Grant
    Filed: January 7, 1999
    Date of Patent: December 7, 1999
    Assignee: Ballard Medical Products
    Inventors: Mark Foster, Allan F. Willis, Kelly J. Christian
  • Patent number: 5997503
    Abstract: A balloon catheter having a balloon disposed upon an elongate shaft near a relatively rigid distal insertion tip, a fluid lumen for fluid communication with a body cavity and an inflation lumen for fluid communication with the balloon. The balloon holds the catheter tip within a body cavity such as the stomach for long-term enteral feeding. The balloon is configured such that upon inflation, the balloon distends distally to cover the distal tip thus insulating it from sensitive anatomy.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: December 7, 1999
    Assignee: Ballard Medical Products
    Inventors: Allan F. Willis, Kelly J. Christian, Mike Kenowski
  • Patent number: 5833654
    Abstract: A dual reservoir access port includes a metal casing having a top surface with recessed, open proximal and distal fluid reservoirs. Projecting from the casing on the side of the distal fluid reservoir opposite from the proximal fluid reservoir is a dual prong metal outlet stem. The distal fluid reservoir is carried within an open-topped basket that is disposed in a cup formed in the top surface of the casing. A first fluid flow pathway extends from the proximal fluid reservoir, between the basket and the wall of the distal cup, to the outlet stem. A second fluid flow pathway extends directly from the distal fluid reservoir to the outlet stem. A needle-penetrable compound septum is disposed against the casing simultaneously closing the top of the proximal fluid reservoir and the top of the distal fluid reservoir. A plastic jacket clamps the septum against the casing and compresses the periphery of the septum to effect a fluid seal by the septum of each of the fluid reservoirs.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: November 10, 1998
    Assignee: C. R. Bard, Inc.
    Inventors: Kelly B. Powers, Kelly J. Christian, Kenneth A. Eliasen, Mel Rosenblatt
  • Patent number: 5810789
    Abstract: Vascular access catheters that include a catheter body having one or a plurality of lumens longitudinally extending therethrough. The lumens have cross-sectional shapes that enhance kink resistance, support reliable slit valve operation, and couple securely with the outlet stem of a multiple reservoir implantable access port. In a dual lumen catheter disclosed, each of the lumens are defined by a plurality of longitudinally extending generally linear inner wall surfaces. The inner wall surfaces when viewed in a transverse cross section of the catheter body taken normal to the longitudinal access have trapezoidal shapes. Other cross-sectional shapes are also illustrated. A generally planar septum separates the pair of lumens. The lumens effect a fluid-tight mechanical engagement between the D-shaped outlet prongs of a conventional outlet stem of an implantable dual reservoir access port, highly reliable two-way, three-position slit valves may be associated with each of the lumens.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: September 22, 1998
    Assignee: C. R. Bard, Inc.
    Inventors: Kelly B. Powers, Kelly J. Christian, Kenneth Arden Eliasen, Ronald O. Campbell, Donald James Jones, Kris Flanary
  • Patent number: 5637102
    Abstract: A catheter connection system is defined by a rigid, tubular stem attached at a proximal end thereof to a medical device. The stem has a plurality of comparably configured engagement barbs encircling and radially, outwardly extending on an exterior surface of the stem. A locking barb also encircles and radially, outwardly extends on the surface of the stem between the medical device and the engagement barbs. A rigid first locking sleeve is provided for inwardly compressing a portion of a body wall of a silicone catheter against the locking barb on the stem when the stem is received in the lumen of the silicone catheter to create a mechanical joinder and liquid-tight seal between the silicone catheter and the stem. In the alternative, a compression sleeve housed within a rigid second locking sleeve is provided for compressing a body wall of a polyurethane catheter against the engagement barbs on the stem to create a mechanical joinder and liquid-tight seal between the polyurethane catheter and the stem.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: June 10, 1997
    Assignee: C. R. Bard, Inc.
    Inventors: M. Joshua Tolkoff, Robert C. Allman, Kenneth A. Eliasen, Robert N. Gailey, Kelly J. Christian, Donald J. Jones
  • Patent number: 5399168
    Abstract: A subcutaneous implantable access port is formed of a housing having a pair of noncircular fluid cavities enclosed therein by a floor, walls upstanding from the floor, and a self-sealing septum positioned above each fluid cavity. The housing is constructed of a base, a septum support, and a cap. An outlet stem exits the base and communicates with the fluid cavities therein. The outlet stem has two prongs formed in a side-by-side configuration extending outwardly from the base. The prongs are formed within the stem channels in fluid communication with the fluid cavities. Protruding radially outwardly from the portion of said prong is a barb. Fluid injected into the fluid cavity through the septum flows through a smooth transition region in which the cross-sectional area is smoothly reduced from the corresponding fluid cavity. A locking sleeve provides radial inward pressure upon the catheter which is slid over the outlet stem, thereby insuring that the catheter remains mounted on the outlet stem.
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: March 21, 1995
    Assignee: C. R. Bard, Inc.
    Inventors: Daniel C. Wadsworth, Jr., Kelly J. Christian, Augustus Felix, Patricia A. Bassett, Craig S. Nevers