Patents by Inventor Suranjan Roychowdhury

Suranjan Roychowdhury 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: 20080140098
    Abstract: Improved anastomosis devices having structural upgrades to increase ease of use while simultaneously increasing patient safety. The anastomosis device can include a distal treatment end and a proximal connection end. The anastomosis device has a catheter portion with a plurality of inflation lumens and a funnel portion. The funnel portion includes access ports in fluid connection to a catheter receiving aperture for attaching to the catheter portion. Also, the access ports including a drainage port, a control port and a plurality of inflation ports.
    Type: Application
    Filed: November 15, 2007
    Publication date: June 12, 2008
    Inventors: Monica Kumar, Vincent G. Copa, Eric Barnum, Suranjan Roychowdhury, Kory P. Hamel, Randall C. Lieser, Robert L. Rykhus, Adam L. Gullickson, Amy E. Geis
  • Publication number: 20080119784
    Abstract: A needleless fluid delivery system for delivering therapeutic fluids to treatment sites within a patient. The fluid delivery system can include an automated injector source and a needleless access device. The access device can include a delivery scope and a treatment specific applicator. The automated injector source, delivery scope and applicator can be operably coupled with quick-connect style fittings so as to allow for quick replacement and maintenance of used or damaged components. The automated injector source can include a hands-free input mechanism allowing a medical professional to use both hands in manipulating the delivery scope and needleless applicator at the same time an injection is desired. The delivery scope and needleless applicator can comprise flexible or rigid lengths of tubing based on the accessibility of the treatment site. The needleless delivery system can include an imaging system for precisely position the applicator with respect to the treatment location.
    Type: Application
    Filed: November 19, 2007
    Publication date: May 22, 2008
    Inventors: Suranjan Roychowdhury, Vincent G. Copa, Sidney F. Hauschild
  • Publication number: 20080097493
    Abstract: An anastomosis device providing increased functionality, reliability and safety through the use of designs addressing potential puncture of an inflation balloon being used to hold and approximate tissue. The anastomosis device can include bladder retention structures configured to engage and retain tissue without pointed or sharpened surfaces that can rupture the inflation balloon. The anastomosis device can include a reinforced or otherwise protected inflation balloon to resist puncturing by a bladder retention structure. The anastomosis device can include a catheter wall profile selected to physically prevent bladder retention structures from being forcibly bent back so as to avoid potential contact with and puncture of the inflation balloon. The anastomosis device can include a catheter funnel with an internal spring for preventing kinking of the catheter lumen while providing for flexibility and stretch of the funnel to absorb pulling or shock force which can rupture the inflation balloon.
    Type: Application
    Filed: October 17, 2007
    Publication date: April 24, 2008
    Inventors: Vincent Copa, Sidney Hauschild, Suranjan Roychowdhury, Kory Hamel, Robert Rykhus, Jay Soderberg
  • Publication number: 20080021257
    Abstract: An improved x-ray brachytherapy system and related methods for delivering low dose radiation to a treatment location while minimizing damage to surrounding healthy tissue. Generally, the x-ray brachytherapy system can include a device controller, a device positioner, system imagery, and an x-ray brachytherapy probe having two or more delivery needles. The two or more delivery needles are operably coupled to at least one probe housing such that a tip spacing between the delivery needles is minimized when positioned at the treatment location. By reducing tip spacing at the treatment location, smaller radiation doses can be delivered so as to limit radiation exposure to surrounding healthy tissue.
    Type: Application
    Filed: July 18, 2007
    Publication date: January 24, 2008
    Applicant: AMS RESEARCH CORPORATION
    Inventors: Suranjan Roychowdhury, Adam Gullickson, Kory Hamel
  • Publication number: 20060276811
    Abstract: A surgical tool which comprises an elongated body having a proximal end and a distal end, first and second sets of tissue approximating structures having deployed and retracted positions relative to the elongated body, an actuating mechanism extending from the proximal end of the elongated body for independently deploying and retracting each of the first and second sets of tissue approximating structures, a drainage lumen extending from a drainage aperture at the distal end of the elongated body to the proximal end, a main balloon adjacent to the distal end of the elongated body, and a strap connector extending from the elongated body that is connectable with a stabilization strap.
    Type: Application
    Filed: May 19, 2006
    Publication date: December 7, 2006
    Inventors: Vincent Copa, Kory Hamel, Sidney Hauschild, Suranjan Roychowdhury, Robert Rykhus
  • Publication number: 20060264985
    Abstract: A surgical tool including an elongated body having a proximal end and a distal end, first and second sets of tissue approximating structures having deployed and retracted positions relative to the elongated body, an actuating mechanism at the proximal end of the elongated body for independently deploying and retracting each of the first and second sets of tissue approximating structures, and a drainage lumen extending from a drainage aperture at the distal end of the elongated body to the proximal end. The tool further includes a main balloon adjacent to the distal end of the elongated body, wherein the first set of tissue approximating structures has a different configuration than the second set of tissue approximating structures.
    Type: Application
    Filed: May 19, 2006
    Publication date: November 23, 2006
    Inventors: Vincent Copa, Kory Hamel, Suranjan Roychowdhury, Robert Rykhus
  • Publication number: 20060200178
    Abstract: The anastomosis devices of the invention advantageously provide reinforcement structures or components that increase the strength and/or flexibility of the device. These features can be especially beneficial to protect the integrity of the installation of the device within a patient to facilitate the healing process. These features may provide resistance to tearing or ripping of the catheter body or sheath by the tissue approximating structures and/or may provide strength in other areas of the catheter body. The anastomosis devices of the invention may further include method and devices for placing markers on the anastomosis device to facilitate accurate placement of the device within the patient.
    Type: Application
    Filed: February 17, 2006
    Publication date: September 7, 2006
    Inventors: Kory Hamel, Vincent Copa, Robert Rykhus, Suranjan Roychowdhury, Sidney Hauschild, Joseph Hofmeister, Eric Vang
  • Publication number: 20060195011
    Abstract: Described are surgical implants that include a central support portion adapted to be positioned to support pelvic tissue, between mesh end portions adapted to be passed through body tissue, wherein edges of the end portions exhibit extensions that are resistant to deformation.
    Type: Application
    Filed: February 3, 2006
    Publication date: August 31, 2006
    Inventors: Kevin Arnal, Sidney Hauschild, Peter Jacobs, Suranjan Roychowdhury
  • Publication number: 20060195010
    Abstract: Described are surgical implants, tools, systems, and related methods, useful for implantation of surgical implants, such as those used to treat pelvic conditions including incontinence.
    Type: Application
    Filed: February 3, 2006
    Publication date: August 31, 2006
    Inventors: Kevin Arnal, Sidney Hauschild, Robert Lund, Suranjan Roychowdhury, David Vancelette
  • Publication number: 20060079892
    Abstract: Connectors for interconnecting rods, fixed to vertebrae and other bones of a subject include a body portion and two recesses or pockets for receiving the rods. These connectors are generally able to be secured to the rods by a tightening a fastener or retaining member from above the spine, which can facilitate the procedure for the surgeon. The connectors can include rotatable or stationary pockets, mating members that pivot and/or translate within the coronal plane of the subject to adjust to the positions of the rods, and extension shafts that pivot to adjust for rod angle.
    Type: Application
    Filed: September 10, 2002
    Publication date: April 13, 2006
    Inventors: Suranjan Roychowdhury, Duy Nguyen, Jeffrey Cota
  • Publication number: 20050277924
    Abstract: An orthopedic fixation connector and system is provided. The orthopedic fixation system includes bone anchors and linking elements that are coupled together to form a stabilization construct. The linking elements are fixed relative to the bone anchors by clamping arrangements. The clamping arrangements include first linear interlock components coupled to the anchors and second linear interlock components that linearly interlock with the first interlock components to clamp the linking elements at desired positions relative to the anchors.
    Type: Application
    Filed: June 9, 2004
    Publication date: December 15, 2005
    Inventor: Suranjan Roychowdhury
  • Patent number: 6786887
    Abstract: An intravascular occlusion balloon catheter having a removable hub, a profile sized to approximate a guidewire, and a means for venting air from the balloon. The removable hub and the small profile allow the occlusion balloon catheter to be used as a guidewire. The venting means allows air to be easily and reliably removed from the balloon prior to use.
    Type: Grant
    Filed: January 26, 2001
    Date of Patent: September 7, 2004
    Assignee: SciMed Life Systems, Inc.
    Inventors: Suranjan Roychowdhury, Katherine M. Prindle, Kyle Eastenson
  • Publication number: 20020103473
    Abstract: An intravascular occlusion balloon catheter having a removable hub, a profile sized to approximate a guidewire, and a means for venting air from the balloon. The removable hub and the small profile allow the occlusion balloon catheter to be used as a guidewire. The venting means allows air to be easily and reliably removed from the balloon prior to use.
    Type: Application
    Filed: January 26, 2001
    Publication date: August 1, 2002
    Applicant: SciMed Life Systems, Inc.
    Inventors: Suranjan Roychowdhury, Katherine M. Prindle, Kyle Eastenson
  • Patent number: 6361529
    Abstract: A dilation catheter having a first shaft section, a second shaft section attached to the first shaft section, and an inflatable balloon attached to the second shaft section. A fluid pathway is defined through the catheter for inflation of the balloon. A guide wire lumen is provided in the second shaft section that can extend between the distal end of the balloon and a point distal of the first shaft section. A stiffening member is provided within the second shaft section of the dilation catheter to provide additional stiffness to the second shaft section. In a preferred embodiment, the stiffening member is attached at the distal end of the first shaft section to occlude the hollow passage of the first shaft section. In this embodiment, the first shaft section farther includes a fluid port that is proximal of the stiffening member and that extends between the hollow passage of the first shaft section and the exterior of the first shaft section.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: March 26, 2002
    Assignee: Schneider (USA) Inc.
    Inventors: Rich L. Goodin, Suranjan Roychowdhury, Katherine Prindle
  • Patent number: 6295714
    Abstract: A body implantable stent is formed of a plurality of strands arranged in two sets of coaxial helices, wound in opposite directions to form multiple crossings. At selected crossings, the adjacent strands are welded to one another, while at the remaining crossings the strands are free for limited movement relative to one another. The welds are formed in patterns that preferably enhance radial strength and rigidity, while having a minimal impact on axial bending flexibility. Preferred weld patterns in this regard include rings or circumferential rows, and helices, particularly with a steeper pitch than that of the strands. Stent fabrication preferably involves resistance welding at the crossings, and use of a tool to reuniformly compress the stent around and against the distal end region of a balloon catheter used later to deliver the stent to a treatment site.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: October 2, 2001
    Assignee: Schneider (USA) Inc
    Inventors: Suranjan Roychowdhury, Leonard Pinchuk, Eugen Hofmann, Susanne Hankh, Michael G. O'Connor, Jennifer E. Raeder-Devens, Jeannine B. Baden, Daniel J. Klima
  • Patent number: 6066114
    Abstract: A dilation catheter having a first shaft section, a second shaft section attached to the first shaft section, and an inflatable balloon attached to the second shaft section. A fluid pathway is defined through the catheter for inflation of the balloon. A guide wire lumen is provided in the second shaft section that can extend between the distal end of the balloon and a point distal of the first shaft section. A stiffening member is provided within the second shaft section of the dilation catheter to provide additional stiffness to the second shaft section. In a preferred embodiment, the stiffening member is attached at the distal end of the first shaft section to occlude the hollow passage of the first shaft section. In this embodiment, the first shaft section further includes a fluid port that is proximal of the stiffening member and that extends between the hollow passage of the first shaft section and the exterior of the first shaft section.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: May 23, 2000
    Assignee: Schneider (USA) Inc
    Inventors: Rich L. Goodin, Suranjan Roychowdhury, Katherine Prindle
  • Patent number: 6027529
    Abstract: A body implantable stent is formed of a plurality of strands arranged in two sets of coaxial helices, wound in opposite directions to form multiple crossings. At selected crossings, the adjacent strands are welded to one another, while at the remaining crossings the strands are free for limited movement relative to one another. The welds are formed in patterns that preferably enhance radial strength and rigidity, while having a minimal impact on axial bending flexibility. Preferred weld patterns in this regard include rings or circumferential rows, and helices, particularly with a steeper pitch than that of the strands. Stent fabrication preferably involves resistance welding at the crossings, and use of a tool to reuniformly compress the stent around and against the distal end region of a balloon catheter used later to deliver the stent to a treatment site.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: February 22, 2000
    Assignee: Schneider (USA) Inc
    Inventors: Suranjan Roychowdhury, Leonard Pinchuk, Eugen Hofmann, Susanne Hankh, Michael G. O'Connor, Jennifer E. Raeder-Devens, Jeannine B. Baden, Daniel J. Klima
  • Patent number: 5681522
    Abstract: To improve the re-wrappability of the expander members used on balloon catheters subsequent to an initial inflation thereof, the balloon member is subjected to an annealing process in which the balloon member, in its wrapped configuration, is placed within a plastic sheath and it, together with the sheath, is then placed between the jaws of a clamping fixture where the jaws may be heated to a predetermined temperature. When the jaws are made to close on the sheath and the wrapped balloon contained within it, the wrapped balloon is subjected to a radial compressive pressure and a temperature approximately equal to or above the glass transition temperature for the balloon material utilized and then maintained at that temperature for a predetermined time interval. The annealing is found to introduce a memory component into the plastic of the balloon that causes it to assume a lower profile upon deflation than otherwise obtained.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: October 28, 1997
    Assignee: Schneider (USA) Inc.
    Inventor: Suranjan Roychowdhury
  • Patent number: 5587125
    Abstract: A non-coextrusion process for making multi-layer angioplasty balloons involves pre-forming separate parisons and then concentrically disposing the plural parisons to form a composite parison which is then subjected to a blow-molding process. The resulting balloon can have its properties tailored by appropriate selection of the particular plastics to be used for the multiple parisons.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: December 24, 1996
    Assignee: Schneider (USA) Inc.
    Inventor: Suranjan Roychowdhury