Patents by Inventor Srinivas Nishtalas
Srinivas Nishtalas 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).
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Patent number: 7090688Abstract: Devices and methods permit dilation of a track of a body to any of a plurality of diameters using a single integrated device that can reach any of a plurality of expanded diameters upon actuation by a user of an actuating mechanism which directs and controls the dilation of a dilating element to which it is connected by a dial and transmission mechanism. A variety of dials, transmission mechanisms and dilating elements are disclosed which may be combined in a variety of ways.Type: GrantFiled: August 11, 2003Date of Patent: August 15, 2006Assignee: Boston Scientific Scimed, Inc.Inventors: Srinivas Nishtala, Stephane Gobron, Jeff Smith, Tim Ward
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Publication number: 20050096506Abstract: An endoscopic needle device comprises a handle and a catheter sheath connected to the handle, wherein the catheter sheath has at least one lumen, for example a needle lumen and a stabilization lumen, extending therethrough. A needle is selectively movable within the needle lumen between a needle retracted position and a needle extended position and a stabilization element is selectively movable within the stabilization lumen between a stabilizer retracted position and a stabilizer extended position. A linking mechanism may operatively connect the needle and the stabilization element so that when the needle is in the needle retracted position the stabilization element is in the stabilizer extended position and when the needle is in the needle extended position the stabilization element is in the stabilizer retracted position.Type: ApplicationFiled: December 8, 2004Publication date: May 5, 2005Inventors: Srinivas Nishtala, Tim Ward
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Patent number: 6843792Abstract: An endoscopic needle device comprises a handle and a catheter sheath connected to the handle, wherein the catheter sheath has at least one lumen, for example a needle lumen and a stabilization lumen, extending therethrough. A needle is selectively movable within the needle lumen between a needle retracted position and a needle extended position and a stabilization element is selectively movable within the stabilization lumen between a stabilizer retracted position and a stabilizer extended position. A linking mechanism may operatively connect the needle and the stabilization element so that when the needle is in the needle retracted position the stabilization element is in the stabilizer extended position and when the needle is in the needle extended position the stabilization element is in the stabilizer retracted position.Type: GrantFiled: June 12, 2003Date of Patent: January 18, 2005Assignee: SciMed Life Systems, Inc.Inventors: Srinivas Nishtala, Tim E. Ward
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Publication number: 20040193114Abstract: An apparatus and method for use in the percutaneous insertion of medical devices is disclosed. In an embodiment, the apparatus includes an access tube defining a central lumen and a retention portion disposed at a distal end of the access tube. The retention portion is reconfigurable between a first configuration of reduced lateral extent and a second configuration of increased lateral extent. A trocar is moveably disposed within the central lumen of the access tube. The access tube is movably disposed within a central lumen of an overtube. In an embodiment of a method of the present invention, the method includes the steps of inserting the trocar and access tube through a body wall of a patient, where the trocar is disposed within the access tube and where a retention portion disposed at a distal end of the access tube is configured in a first configuration of reduced lateral extent. The retention portion is then configured in a second configuration of increased lateral extent.Type: ApplicationFiled: April 12, 2004Publication date: September 30, 2004Inventors: Linda D. Elbert, D. H. Perkins, Srinivas Nishtala, Stephane Gobron
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Publication number: 20040111062Abstract: Medical devices for retaining an end of a medical tube. Each of the devices of the present invention comprises a base and at least one tab having a portion that is moveable within the base. The base comprises an upper surface, a lower surface, at least one side cavity for receiving a tab, and an opening transverse to the upper and lower surfaces. To facilitate tube retention, the tube is inserted through the opening in the base and the tab(s) is(are) moved within the cavity(ies) such that a portion of each tab contacts and retains the tube.Type: ApplicationFiled: November 24, 2003Publication date: June 10, 2004Inventors: Srinivas Nishtala, Linda Elbert, D. H. Perkins, Stephane Gobron, Jeffrey Smith
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Patent number: 6743207Abstract: An apparatus and method for use in the percutaneous insertion of medical devices is disclosed. In an embodiment, the apparatus includes an access tube defining a central lumen and a retention portion disposed at a distal end of the access tube. The retention portion is reconfigurable between a first configuration of reduced lateral extent and a second configuration of increased lateral extent. A trocar is moveably disposed within the central lumen of the access tube. The access tube is movably disposed within a central lumen of an overtube. In an embodiment of a method of the present invention, the method includes the steps of inserting the trocar and access tube through a body wall of a patient, where the trocar is disposed within the access tube and where a retention portion disposed at a distal end of the access tube is configured in a first configuration of reduced lateral extent. The retention portion is then configured in a second configuration of increased lateral extent.Type: GrantFiled: April 19, 2001Date of Patent: June 1, 2004Assignee: SciMed Life Systems, Inc.Inventors: Linda D. Elbert, D. H. Perkins, Srinivas Nishtala, Stéphane Gobron
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Publication number: 20040049223Abstract: Devices and methods permit dilation of a track of a body to any of a plurality of diameters using a single integrated device that can reach any of a plurality of expanded diameters upon actuation by a user of an actuating mechanism which directs and controls the dilation of a dilating element to which it is connected by a dial and transmission mechanism. A variety of dials, transmission mechanisms and dilating elements are disclosed which may be combined in a variety of ways.Type: ApplicationFiled: August 11, 2003Publication date: March 11, 2004Applicant: SCIMED Life Systems, Inc.Inventors: Srinivas Nishtala, Stephane Gobron, Jeff Smith, Tim Ward
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Patent number: 6676640Abstract: Medical devices for retaining an end of a medical tube. Each of the devices of the present invention comprises a base and at least one tab having a portion that is moveable within the base. The base comprises an upper surface, a lower surface, at least one side cavity for receiving a tab, and an opening transverse to the upper and lower surfaces. To facilitate tube retention, the tube is inserted through the opening in the base and the tab(s) is (are) moved within the cavity(ies) such that a portion of each tab contacts and retains the tube.Type: GrantFiled: June 1, 2001Date of Patent: January 13, 2004Assignee: SciMed Life Systems, Inc.Inventors: Srinivas Nishtala, Linda Elbert, D. H. Perkins, Stephane Gobron, Jeffrey Smith
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Patent number: 6663645Abstract: An endoscopic needle device includes a handle and a catheter sheath connected to the handle, wherein the catheter sheath has at least one lumen, for example a needle lumen and a stabilization lumen, extending therethrough. A needle is selectively movable within the needle lumen between a needle retracted position and a needle extended position and a stabilization element is selectively movable within the stabilization lumen between a stabilizer retracted position and a stabilizer extended position. A linking mechanism may operatively connect the needle and the stabilization element so that when the needle is in the needle retracted position the stabilization element is in the stabilizer extended position and when the needle is in the needle extended position the stabilization element is in the stabilizer retracted position.Type: GrantFiled: February 27, 2002Date of Patent: December 16, 2003Assignee: SciMed Life Systems, Inc.Inventors: Srinivas Nishtala, Tim E. Ward
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Publication number: 20030216753Abstract: An endoscopic needle device comprises a handle and a catheter sheath connected to the handle, wherein the catheter sheath has at least one lumen, for example a needle lumen and a stabilization lumen, extending therethrough. A needle is selectively movable within the needle lumen between a needle retracted position and a needle extended position and a stabilization element is selectively movable within the stabilization lumen between a stabilizer retracted position and a stabilizer extended position. A linking mechanism may operatively connect the needle and the stabilization element so that when the needle is in the needle retracted position the stabilization element is in the stabilizer extended position and when the needle is in the needle extended position the stabilization element is in the stabilizer retracted position.Type: ApplicationFiled: June 12, 2003Publication date: November 20, 2003Inventors: Srinivas Nishtala, Tim E. Ward
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Publication number: 20030195492Abstract: A tool actuating assembly for a multi-function surgical instrument is disclosed. The tool actuating assembly of the present invention can be utilized in a variety of differently configured multi-function surgical instruments and can be embodied in various physical configurations. The tool actuating assembly of the present invention provides for more efficient use of the tools of the instrument by the surgeon who is utilizing the instrument.Type: ApplicationFiled: May 15, 2003Publication date: October 16, 2003Inventors: Stephane Gobron, Tim Ward, W. Michael Mereness, Mark Isom Richards, Srinivas Nishtala
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Patent number: 6616678Abstract: Devices and methods permit dilation of a track of a body to any of a plurality of diameters using a single integrated device that can reach any of a plurality of expanded diameters upon actuation by a user of an actuating mechanism which directs and controls the dilation of a dilating element to which it is connected by a dial and transmission mechanism. A variety of dials, transmission mechanisms and dilating elements are disclosed which may be combined in a variety of ways.Type: GrantFiled: March 22, 2001Date of Patent: September 9, 2003Assignee: SciMed Life Systems, Inc.Inventors: Srinivas Nishtala, Stéphane Gobron, Jeff Smith, Tim Ward
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Publication number: 20030153843Abstract: An instrument for collecting body tissue includes a tubular cutting member having an exterior surface, a proximal end, and a distal end capable of penetrating body tissue; and a flexible cutting extension coaxially and slidably disposed around the exterior surface of the cutting member, the flexible cutting extensions having a proximal end and distal end capable of cutting tissue located at the distal end of the cutting member and covering the distal end of the cutting member so that tissue that has entered the cutting member is retained in the cutting member. A first tubular member may be connected to the cutting member, and a second tubular member mayb connected to the cutting extension, the second tubular member being coaxially disposed on the first tubular member.Type: ApplicationFiled: February 11, 2003Publication date: August 14, 2003Applicant: Scimed Life Systems, a Minnesota CorporationInventors: Srinivas Nishtalas, Tim E. Ward, James S. Bates, Stephane Gobron
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Patent number: 6589231Abstract: A tool actuating assembly for a multi-function surgical instrument is disclosed. The tool actuating assembly of the present invention can be utilized in a variety of differently configured multi-function surgical instruments and can be embodied in various physical configurations. The tool actuating assembly of the present invention provides for more efficient use of the tools of the instrument by the surgeon who is utilizing the instrument.Type: GrantFiled: November 3, 2000Date of Patent: July 8, 2003Assignee: SciMed Life Systems, Inc.Inventors: Stephane Gobron, Tim Ward, W. Michael Mereness, Mark Isom Richards, Srinivas Nishtala
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Patent number: 6551254Abstract: An instrument for collecting body tissue includes a tubular cutting member having an exterior surface, a proximal end, and a distal end capable of penetrating body tissue; and a flexible cutting extension coaxially and slidably disposed around the exterior surface of the cutting member, the flexible cutting extensions having a proximal end and distal end capable of cutting tissue located at the distal end of the cutting member and covering the distal end of the cutting member so that tissue that has entered the cutting member is retained in the cutting member. A first tubular member may be connected to the cutting member, and a second tubular member maybe connected to the cutting extension, the second tubular member being coaxially disposed on the first tubular member.Type: GrantFiled: March 9, 2001Date of Patent: April 22, 2003Assignee: SciMed Life SystemsInventors: Srinivas Nishtalas, Tim E. Ward, Jim Bates, Stephane Gobron
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Publication number: 20020165553Abstract: An apparatus and method for use in the percutaneous insertion of medical devices is disclosed. In an embodiment, the apparatus includes an access tube defining a central lumen and a retention portion disposed at a distal end of the access tube. The retention portion is reconfigurable between a first configuration of reduced lateral extent and a second configuration of increased lateral extent. A trocar is moveably disposed within the central lumen of the access tube. The access tube is movably disposed within a central lumen of an overtube. In an embodiment of a method of the present invention, the method includes the steps of inserting the trocar and access tube through a body wall of a patient, where the trocar is disposed within the access tube and where a retention portion disposed at a distal end of the access tube is configured in a first configuration of reduced lateral extent. The retention portion is then configured in a second configuration of increased lateral extent.Type: ApplicationFiled: April 19, 2001Publication date: November 7, 2002Inventors: Linda D. Elbert, D. H. Perkins, Srinivas Nishtala, Stephane Gobron
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Publication number: 20020082617Abstract: An endoscopic needle device comprises a handle and a catheter sheath connected to the handle, wherein the catheter sheath has at least one lumen, for example a needle lumen and a stabilization lumen, extending therethrough. A needle is selectively movable within the needle lumen between a needle retracted position and a needle extended position and a stabilization element is selectively movable within the stabilization lumen between a stabilizer retracted position and a stabilizer extended position. A linking mechanism may operatively connect the needle and the stabilization element so that when the needle is in the needle retracted position the stabilization element is in the stabilizer extended position and when the needle is in the needle extended position the stabilization element is in the stabilizer retracted position.Type: ApplicationFiled: February 27, 2002Publication date: June 27, 2002Inventors: Srinivas Nishtala, Tim E. Ward
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Patent number: 6371963Abstract: An endoscopic needle device having a handle and a catheter sheath connected to the handle, wherein the catheter sheath has at least one lumen, for example a needle lumnen and a stabilization lumen, extending there through. A needle is selectively movable within the needle lumen between a needle retracted position and a needle extended position and a stabilization element is selectively movable within the stabilization lumen between a stabilizer retracted position and a stabilizer extended position. A linking mechanism may operatively connect the needle and the stabilization element so that when the needle is in the needle retracted position the stabilization element is in the stabilizer extended position and when the needle is in the needle extended position the stabilization element is in the stabilizer retracted position.Type: GrantFiled: November 17, 1998Date of Patent: April 16, 2002Assignee: Scimed Life Systems, Inc.Inventors: Srinivas Nishtala, Tim E. Ward
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Patent number: 6348056Abstract: Baskets with multiple portions and multiple deployed configurations allow the capture and release of material within the body.Type: GrantFiled: August 6, 1999Date of Patent: February 19, 2002Assignee: SCImed Life Systems, Inc.Inventors: James S. Bates, Srinivas Nishtala, James A. Teague, Michael S. H. Chu
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Patent number: 6322538Abstract: A gastro-intestinal tube placement device for percutaneously placing gastro-intestinal tubes into the gastric cavity. The gastro-intestinal tube placement device of the present invention includes a containment element, such as an overtube, through which a gastro-intestinal tube can pass, and a displacing element assembly for pushing a gastro-intestinal tube through the containment element. The present invention also includes a gastro-intestinal tube having a collapsible internal bolster at its distal end, which bolster is capable of being manipulated to have a reduced lateral extent that allows the tube to be placed within the containment element.Type: GrantFiled: February 18, 1999Date of Patent: November 27, 2001Assignee: Scimed Life Systems, Inc.Inventors: Linda D. Elbert, D. H. Perkins, Srinivas Nishtala