Patents by Inventor Christopher A. Rowland

Christopher A. Rowland 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: 20100084577
    Abstract: Techniques for ion implantation of molecular ions are disclosed. In one particular exemplary embodiment, the techniques may be realized as an apparatus for ion implantation comprising an ion implanter for implanting a target material with a molecular ion at a predetermined temperature to improve at least one of strain and amorphization of the target material, wherein the molecular ion is generated in-situ within an ion source.
    Type: Application
    Filed: October 8, 2008
    Publication date: April 8, 2010
    Applicant: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Christopher R. Hatem, Christopher A. Rowland
  • Patent number: 7645254
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: January 12, 2010
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Publication number: 20090231597
    Abstract: A sheet measurement apparatus has a sheet disposed in a melt. The measurement system uses a beam to determine a dimension of the sheet. This dimension may be, for example, height or width. The beam may be, for example, collimated light, a laser, x-rays, or gamma rays. The production of the sheet may be altered based on the measurements.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 17, 2009
    Applicant: VARIAN SEMICONDUTOR EQUIPMENT ASSOCIATES, INC.
    Inventors: Christopher A. ROWLAND, Peter L. Kellerman, Frank Sinclair, Julian G. Blake, Nicholas P.T. Bateman
  • Publication number: 20040243056
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Application
    Filed: April 13, 2004
    Publication date: December 2, 2004
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Patent number: 6743217
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: June 1, 2004
    Assignee: SciMed Life Systems, Inc.
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Patent number: 6547758
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: April 15, 2003
    Assignee: Scimed Life Systems, Inc.
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Publication number: 20020193788
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Application
    Filed: August 16, 2002
    Publication date: December 19, 2002
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Patent number: 6443924
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Grant
    Filed: July 20, 1999
    Date of Patent: September 3, 2002
    Assignee: SciMed Life Systems, Inc.
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Patent number: 6436056
    Abstract: Implements, particularly medical instruments, formed at least in part of elongated polymer members, exhibit high torque fidelity after processing with tension, heat, and twisting. The processing orients the polymer in generally helical paths so that torque imposed at the proximal end can be transmitted to the distal end without substantial whipping, even if the implement follows a long and tortuous pathway. Applications include medical guidewires, catheters, and driveshafts.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: August 20, 2002
    Assignee: Boston Scientific Corporation
    Inventors: James C. Wang, Albert Chin, James B. Daigle, Douglas J. Daniels, Richard M. Demello, John F. Hartnett, Robert E. Reid, Christopher A. Rowland, Charles Warich, Thomas A. Svatek
  • Patent number: 5951494
    Abstract: Implements, particularly medical instruments, formed at least in part of elongated polymer members, exhibit high torque fidelity after processing with tension, heat, and twisting. The processing orients the polymer in generally helical paths so that torque imposed at the proximal end can be transmitted to the distal end without substantial whipping, even if the implement follows a long and tortuous pathway. Applications include medical guidewires, catheters, and driveshafts.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: September 14, 1999
    Assignee: Boston Scientific Corporation
    Inventors: James C. Wang, Albert Chin, James B. Daigle, Douglas J. Daniels, Richard M. Demello, John F. Hartnett, Robert E. Reid, Christopher A. Rowland, Charles Warich, Thomas A. Svatek
  • Patent number: 5868698
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: February 9, 1999
    Assignee: Boston Scientific Corporation
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Patent number: 5683362
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: November 4, 1997
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Patent number: 5643199
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Grant
    Filed: May 14, 1996
    Date of Patent: July 1, 1997
    Assignee: Boston Scientific Corporation
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Patent number: 5578018
    Abstract: Apparatus for use in the diagnosis and treatment of strictures in a biliary duct, urinary tract or pancreatic tract. The apparatus includes a dual lumen catheter device. One lumen size is sized to accommodate a guidewire. A second, parallel lumen has a non-circular cross-section and carries a cytology brush at one end that couples through an operator to a manipulator at another end. The cytology brush has an effective diameter that is greater than the diameter of the catheter device. Brush cytology samples are obtained without removing the guidewire from a stricture and without introducing any relative motion between the guidewire and the catheter. As the cytology brush is retracted into the non-circular lumen, its bristles compact around the operator for storage within the lumen. A predetermined arrangement of markers at the distal end of the catheter facilitates the measurement of stricture length by direct endoscopic visualization.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: November 26, 1996
    Assignee: Boston Scientific Corporation
    Inventors: Christopher A. Rowland, M. Joshua Tolkoff, Ella Zaslavsky
  • Patent number: 5547469
    Abstract: Catheter apparatus for performing diagnostic and therapeutic modalities in the biliary tree includes a catheter with multiple lumens. A first lumen is adapted to receive a guidewire and can serve as a transport lumen for contrast agent. A second lumen carries a cutting wire for performing a sphincterotomy. A third lumen can be used as an inflation lumen for a distally located balloon. Expansion of the balloon occludes a portion of the biliary tree and allows the catheter to sweep any gallstones through the sphincter of Oddi into the duodenum.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: August 20, 1996
    Assignee: Boston Scientific Corporation
    Inventors: Christopher A. Rowland, Michael G. Vergano, Bryan P. Eddy, Peter B. Cotton
  • Patent number: 5522815
    Abstract: An integrated catheter assembly for enabling diverse in situ therapies includes a catheter with an irrigation fluid lumen, a distal tip portion that acts as a hemostat and a needle for injection therapy that extends through the catheter lumen and a lumen in the distal tip portion. A needle hub structure carries the catheter and provides a sealing entrance for a needle that can be displaced between extended and retracted positions. The needle and electrodes are electrically isolated. The apparatus provides a physician the options of irrigating tissue, cauterizing tissue or injecting tissue without the need for removing the apparatus from the working channel of an endoscope.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: June 4, 1996
    Inventors: Russell F. Durgin, Jr., Christopher A. Rowland, Roy H. Sullivan, Michael G. Vergano
  • Patent number: 5427115
    Abstract: Apparatus for use in the diagnosis and treatment of strictures in a biliary duct, urinary tract or pancreatic tract. The apparatus includes a dual lumen catheter device. One lumen size is sized to accommodate a guidewire. A second, parallel lumen has a non-circular cross-section and carries a cytology brush at one end that couples through an operator to a manipulator at another end. The cytology brush has an effective diameter that is greater than the diameter of the catheter device. Brush cytology samples are obtained without removing the guidewire from a stricture and without introducing any relative motion between the guidewire and the catheter. As the cytology brush is retracted into the non-circular lumen, its bristles compact around the operator for storage within the lumen. A predetermined arrangement of markers at the distal end of the catheter facilitates the measurement of stricture length by direct endoscopic visualization.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: June 27, 1995
    Assignee: Boston Scientific Corporation
    Inventors: Christopher A. Rowland, M. Joshua Tolkoff, Ella Zaslavsky
  • Patent number: 5403311
    Abstract: A catheter includes a flexible elongated catheter body that defines a needle-receiving, or probe-receiving, lumen, a retractable tissue-penetrable needle, or probe, and an electrode mounted on the distal portion of the catheter body. The needle provides a fluid passage for introducing fluid into tissue to permit the introduction of sclerotic agents for enhancing electrocoagulation of the tissue, heat-responsive drugs for improving the bonding to tissue surfaces, or vaso-constrictor drugs. The probe can also have a passage for fluid. The electrode can provide bipolar electro-coagulation of tissue in combination with an additional electrode mounted on the catheter body, or alternatively, the electrode can be employed in combination with either the needle or probe to establish a bipolar electro-coagulation path through tissue. The needle, or probe, in combination with an external electrode can be used to provide unipolar electro-coagulation, or ablation.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: April 4, 1995
    Assignee: Boston Scientific Corporation
    Inventors: John E. Abele, Steven Rowe, Christopher A. Rowland, Michael G. Vergano
  • Patent number: D363544
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: October 24, 1995
    Assignee: Boston Scientific Corporation
    Inventors: Christopher A. Rowland, Earl F. Bardsley, Richard DeMello
  • Patent number: D363776
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: October 31, 1995
    Assignee: Boston Scientific Corporation
    Inventors: Christopher A. Rowland, Earl F. Bardsley, Richard DeMello