Patents by Inventor H. A. Tillmann Hein

H. A. Tillmann Hein 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).

  • Epidural catheter apparatus with an inflation fitting
    Patent number: 5084016
    Abstract: A dual lumen catheter member having distal and proximal end portions is configured to be longitudinally passed entirely through a hollow needle member insertable into the epidural space of a patient, and is provided on its distal end with an inflatable balloon element. With the needle member inserted, the distal catheter end is passed therethrough into the epidural space. The needle member is then withdrawn and removed from the catheter member past its proximal end. The proximal end of the catheter member is then removably inserted into an inlet fitting and frictionally locked therein. The installed inlet fitting defines sealingly separated outward extensions of the lumen inlets which are spaced longitudinally apart on the proximal catheter end portion. Pressurized fluid is injected into one of these inlet extensions to inflate the balloon element, and an anesthetic fluid is flowed into the other extension, and through its associated lumen, into the epidural space through the distal catheter end therein.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: January 28, 1992
    Inventors: Andrew B. Freeman, H. A. Tillmann Hein
  • Epidural catheter apparatus and associated method
    Patent number: 5024655
    Abstract: A dual lumen catheter member having distal and proximal end portions is configured to be longitudinally passed entirely through a hollow needle member insertable into the epidural space of a patient, and is provided on its distal end with an inflatable balloon element. With the needle member inserted, the distal catheter end is passed therethrough into the epidural space. The needle member is then withdrawn and removed from the catheter member past its proximal end. The proximal end of the catheter member is then removably inserted into an inlet fitting and frictionally locked therein. The installed inlet fitting defines sealingly separated outward extensions of the lumen inlets which are spaced longitudinally apart on the proximal catheter end portion. Pressurized fluid is injected into one of these inlet extensions to inflate the balloon element, and an anesthetic fluid is flowed into the other extension, and through its associated lumen, into the epidural space through the distal catheter end therein.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: June 18, 1991
    Inventors: Andrew B. Freeman, H. A. Tillmann Hein