Patents by Inventor David G. Catlin

David G. Catlin 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: 5409463
    Abstract: Apparatus for introducing a catheter percutaneously into the body of a living being. The apparatus comprises a tubular member having a distal end portion and a proximal end portion. The proximal end portion is in the form of a hollow housing for a hemostatic valve assembly comprising a lubricant reservoir and a valve element. The reservoir is formed of a foam material impregnated with a lubricant liquid, e.g., silicone. The valve element is a disk-like member formed of resilient material, e.g., silicone impregnated with polydimethylsiloxane, located distally of the reservoir and has a openable passageway extending through it for the catheter to pass. The reservoir applies the lubricating fluid-in a controlled manner onto the catheter as it is passed through it, to thereby facilitate the passage of the catheter through the openable passageway in the valve element. The hollow housing is arranged to produce peripheral pressure on the valve element to facilitate its closure.
    Type: Grant
    Filed: October 6, 1993
    Date of Patent: April 25, 1995
    Assignee: Thomas Medical Products, Inc.
    Inventors: Joseph J. Thomas, Robert W. Thomas, David G. Catlin, Andrew W. Armour
  • Patent number: 5269771
    Abstract: A needleless device for introducing or withdrawing a fluid to/from the vascular system of a being. The device includes first and second housing sections movably connected with respect to each other and which define a hollow interior in which a pair of resilient valve elements are located. The first housing section includes a first luer fitting for connection to an input line. The second housing section includes a second luer fitting for connection to an output line. A tubular plunger is located within the device and is arranged, when the housing sections are in a first position, to be automatically extended through a first valve element if the input line is connected to the first luer fitting, so that a liquid can be forced from the input line through the device to the output line. When the housing sections are in the first position and the input line disconnected from the first luer fitting, the tubular plunger is retracted out of both valve elements so that the device is fully occluded.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: December 14, 1993
    Assignee: Thomas Medical Products, Inc.
    Inventors: Joseph J. Thomas, David G. Catlin, Andrew Armour, Robert W. Thomas
  • Patent number: 5195980
    Abstract: A Y-connector including a hemostatic valve for enabling the introduction of an elongated member, e.g., a balloon catheter, into the body of a living being while precluding blood from flowing out of the valve. The Y-connector includes a housing having an interior in which a pair of resilient valve elements and a plunger mechanism are located. One valve element, e.g., a disk-like member, has a small diameter opening therein. The other valve element, e.g., a duck-bill valve elements, includes a normally closed, but openable, aperture therein. The plunger mechanism includes a tubular member having an outer diameter which is smaller than the diameter of the opening in the one valve element. The tubular member is arranged to be moved into and out of the opening in the one valve member and into and out of the aperture in the other valve element.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: March 23, 1993
    Assignee: Thomas Medical Products, Inc.
    Inventor: David G. Catlin
  • Patent number: 4197944
    Abstract: A disposable sheath for use with clinical measurement probes, such as a temperature probe. Two sheaths are provided, each with an open end, and which are attached to each other near their respective distal ends. The first sheath covers the probe, and the second sheath covers the first as measurements are taken. After withdrawal of the probe, the second sheath may be inverted to avoid contamination of the environment and other patients. Further pulling of the disposable cover removes it from the probe, which may then be used again without cleaning or sterilization.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: April 15, 1980
    Assignee: Becton, Dickinson and Company
    Inventor: David G. Catlin