Patents by Inventor Steven Y. Chung

Steven Y. Chung 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: 9271823
    Abstract: A ureteral stent comprising a short renal coil made of a pliable material and a wick portion made of a material having a hydrophilicity or hydrophobicity different from that of the renal coil and extending from a ureteropelvic junction to a bladder so as to assist in the transfer of urine out of a kidney and into the bladder and to improve patient comfort. Due to increased hydrophilicity or hydrophobicity, wick may be significantly smaller in diameter than renal coil, resulting in less reflux of urine into the kidney and further decreasing patient discomfort. The stent may further comprise one or more couplers between the renal coil and wick portion, and the wick portion may comprise a sheath surrounding an elastic core to prevent kinking and enhance the ability of the wick portion to move with the patient. A method of ureteral stent placement is also disclosed.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: March 1, 2016
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Steven Y. Chung
  • Publication number: 20120221117
    Abstract: A ureteral stent comprising a short renal coil made of a pliable material and a wick portion made of a material having a hydrophilicity or hydrophobicity different from that of the renal coil and extending from a ureteropelvic junction to a bladder so as to assist in the transfer of urine out of a kidney and into the bladder and to improve patient comfort. Due to increased hydrophilicity or hydrophobicity, wick may be significantly smaller in diameter than renal coil, resulting in less reflux of urine into the kidney and further decreasing patient discomfort. The stent may further comprise one or more couplers between the renal coil and wick portion, and the wick portion may comprise a sheath surrounding an elastic core to prevent kinking and enhance the ability of the wick portion to move with the patient. A method of ureteral stent placement is also disclosed.
    Type: Application
    Filed: May 8, 2012
    Publication date: August 30, 2012
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventor: Steven Y. Chung
  • Patent number: 8192500
    Abstract: A ureteral stent comprising a short renal coil made of a pliable material and a wick portion made of a material having a hydrophilicity or hydrophobicity different from that of the renal coil and extending from a ureteropelvic junction to a bladder so as to assist in the transfer of urine out of a kidney and into the bladder and to improve patient comfort. Due to increased hydrophilicity or hydrophobicity, wick may be significantly smaller in diameter than renal coil, resulting in less reflux of urine into the kidney and further decreasing patient discomfort. The stent may further comprise one or more couplers between the renal coil and wick portion, and the wick portion may comprise a sheath surrounding an elastic core to prevent kinking and enhance the ability of the wick portion to move with the patient. A method of ureteral stent placement is also disclosed.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: June 5, 2012
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Steven Y. Chung
  • Publication number: 20110111451
    Abstract: A device for evaluating the blood content in a plurality of media may include a display having a plurality of columns, each column having a plurality of color-block rows, where the colors are created by diluting blood in the respective medium to obtain a color, and then substantially matching that color with a row in the column. Additionally or alternatively, the columns may represent blood diluted in the same sample, but observed at different times. The display may include gaps between columns to accept a catheter in which the sample to be analyzed is placed and a legend identifying the medium and blood dilution for each column and row, as well as the time of aging, if any, for a column.
    Type: Application
    Filed: November 12, 2009
    Publication date: May 12, 2011
    Inventor: Steven Y. Chung
  • Publication number: 20100152861
    Abstract: A ureteral stent comprising a short renal coil made of a pliable material and a wick portion made of a material having a hydrophilicity or hydrophobicity different from that of the renal coil and extending from a ureteropelvic junction to a bladder so as to assist in the transfer of urine out of a kidney and into the bladder and to improve patient comfort. Due to increased hydrophilicity or hydrophobicity, wick may be significantly smaller in diameter than renal coil, resulting in less reflux of urine into the kidney and further decreasing patient discomfort. The stent may further comprise one or more couplers between the renal coil and wick portion, such as clamps, couplers, sutures, adhesives or receiving ends of the renal coil, and the wick portion may further comprise a sheath surrounding an elastic core to prevent kinking and enhance the ability of the wick portion to move with the patient. A novel method of ureteral stent placement is also disclosed.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Inventor: Steven Y. Chung