Patents by Inventor Roderick E. Briscoe

Roderick E. Briscoe 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: 20040267326
    Abstract: An instrument including an elongated shaft and a non-conductive handle is disclosed. The shaft defines a proximal section and a distal section. The distal section forms an electrically conductive tip. Further, the shaft is adapted to be transitionable from a straight state to a first bent state. The shaft is capable of independently maintaining the distinct shapes associated with the straight state and the first bent state. The handle is rigidly coupled to the proximal section of the shaft. The instrument is useful for epicardial pacing and/or mapping of the heart for temporary pacing on a beating heart, for optimizing the placement of ventricular leads for the treatment of patients with congestive heart failure and ventricular dysynchrony and/or for use in surgical ablation procedures.
    Type: Application
    Filed: May 25, 2004
    Publication date: December 30, 2004
    Inventors: Jon M. Ocel, Roderick E. Briscoe, David E. Francischelli, Scott E. Jahns, James R. Keogh, Katherine S. Jolly, Matthew D. Bonner
  • Publication number: 20040220522
    Abstract: An autoinflating catheter and balloon assembly having an autoregulating structure to prevent overinflation of the balloon as a result of variable fluid flow rates through the catheter lumen. A tight-fitting elastomeric balloon is provided on the distal end of the catheter body, and the assembly is constructed so that at least a portion of the fluid flow through the lumen is directed to the balloon to inflate it. As the balloon is inflated, more and more of the fluid flow through the catheter is discharged from the catheter, thereby preventing overinflation of the balloon.
    Type: Application
    Filed: June 1, 2004
    Publication date: November 4, 2004
    Applicant: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Russell A. Corace
  • Publication number: 20040220560
    Abstract: Methods and devices for forming a lesion in a target tissue having a cavity within. A first RF electrode and a second RF electrode can be coupled to opposite poles of an RF current source. The second electrode can be inserted into the tissue cavity and expanded to contact the target tissue from within. The first electrode can be externally disposed against the target tissue while applying RF current between the first and second electrodes to ablate the target tissue. Some methods are directed to ablating tribiculated atrial wall tissue to treat atrial fibrillation. The second electrode can contact the tribiculated tissue directly from within to provide a direct path between the two electrodes. In some methods, the second electrode is inserted through an incision made to remove an atrial appendage. The methods can provide deeper, narrower lesions relative to those made using remote, indifferent electrodes.
    Type: Application
    Filed: April 29, 2003
    Publication date: November 4, 2004
    Inventor: Roderick E. Briscoe
  • Patent number: 6758809
    Abstract: An improved stabilizer or retractor or other surgical tool having an elongated distal arm carrying a tissue-contacting mechanism at its distal end and a tensioning mechanism at its proximal end for locking functional components of the tool in a desired position or configuration. The tensioning mechanism is mounted to a turret or other structure attaching the distal arm to a base by means of a shorter, proximally extending flexible arm. The flexible proximal arm allows the tensioning mechanism to be moved relative to the base so that it can be placed more conveniently in the operative field.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: July 6, 2004
    Assignee: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, David J. S. Kim
  • Patent number: 6749583
    Abstract: An autoinflating catheter and balloon assembly having an autoregulating structure to prevent overinflation of the balloon as a result of variable fluid flow rates through the catheter lumen. A tight-fitting elastomeric balloon is provided on the distal end of the catheter body, and the assembly is constructed so that at least a portion of the fluid flow through the lumen is directed to the balloon to inflate it. As the balloon is inflated, more and more of the fluid flow through the catheter is discharged from the catheter, thereby preventing overinflation of the balloon.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: June 15, 2004
    Assignee: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Russell A. Corace
  • Publication number: 20040087940
    Abstract: A hemostat-type device for ablative treatment of tissue, particularly for treatment of atrial fibrillation, is constructed with features that provide easy and effective treatment. A swiveling head assembly can allow the jaws to be adjusted in pitch and roll. Malleable jaws can permit curved lesion shapes. A locking detent can secure the jaws in a closed position during the procedure. An illuminated indicator provides confirmation that the device is operating. A fluid delivery system simplifies irrigated ablation procedures.
    Type: Application
    Filed: July 17, 2003
    Publication date: May 6, 2004
    Inventors: Scott E. Jahns, David E. Francischelli, Alison A. Lutterman, James R. Keogh, Roderick E. Briscoe, William G. O'Neill, Jack Goodman, Tom P. Daigle, Paul T. Rothstein, Adam A. Podbelski, Stephen J. Roddy, David J.S. Kim, Mark R. Bilitz
  • Publication number: 20030229271
    Abstract: An improved stabilizer or retractor or other surgical tool having an elongated distal arm carrying a tissue-contacting mechanism at its distal end and a tensioning mechanism at its proximal end for locking functional components of the tool in a desired position or configuration. The tensioning mechanism is mounted to a turret or other structure attaching the distal arm to a base by means of a shorter, proximally extending flexible arm. The flexible proximal arm allows the tensioning mechanism to be moved relative to the base so that it can be placed more conveniently in the operative field.
    Type: Application
    Filed: June 6, 2002
    Publication date: December 11, 2003
    Applicant: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, David J.S. Kim
  • Patent number: 6645194
    Abstract: An obturator for a cannula includes an elongate member and a flexible disc. The cannula has proximal and distal ends and a lumen extending therebetween. The distal end of the cannula has a circular cross-section. The cannula also includes a first portion having a non-circular cross-section and at least one fluid aperture formed adjacent the distal end. The flexible disc of the obturator is coupled to a distal end of the elongate member, both of which are adapted to be telescopically received in the lumen of the cannula. The flexible disc is configured to restrict the flow of fluid, entering the at least one fluid aperture, through the lumen.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: November 11, 2003
    Assignee: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Paul F. Rom, Karyl L. Stapert, David B. DeWindt, Ronald A. Devries, Steven R. Gundry, William E. Sidor
  • Publication number: 20020198558
    Abstract: An autoinflating catheter and balloon assembly having an autoregulating structure to prevent overinflation of the balloon as a result of variable fluid flow rates through the catheter lumen. A tight-fitting elastomeric balloon is provided on the distal end of the catheter body, and the assembly is constructed so that at least a portion of the fluid flow through the lumen is directed to the balloon to inflate it. As the balloon is inflated, more and more of the fluid flow through the catheter is discharged from the catheter, thereby preventing overinflation of the balloon.
    Type: Application
    Filed: September 5, 2002
    Publication date: December 26, 2002
    Applicant: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Russell A. Corace
  • Patent number: 6458096
    Abstract: An autoinflating catheter and balloon assembly having an autoregulating structure to prevent overinflation of the balloon as a result of variable fluid flow rates through the catheter lumen. A tight-fitting elastomeric balloon is provided on the distal end of the catheter body, and the assembly is constructed so that at least a portion of the fluid flow through the lumen is directed to the balloon to inflate it. As the balloon is inflated, more and more of the fluid flow through the catheter is discharged from the catheter, thereby preventing overinflation of the balloon.
    Type: Grant
    Filed: April 5, 1996
    Date of Patent: October 1, 2002
    Assignee: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Russell A. Corace
  • Patent number: 6447484
    Abstract: An obturator for a cannula includes an elongate member and a flexible disc. The cannula has proximal and distal ends and a lumen extending therebetween. The distal end of the cannula has a circular cross-section. The cannula also includes a first portion having a non-circular cross-section and at least one fluid aperture formed adjacent the distal end. The flexible disc of the obturator is coupled to a distal end of the elongate member, both of which are adapted to be telescopically received in the lumen of the cannula. The flexible disc is configured to restrict the flow of fluid, entering the at least one fluid aperture, through the lumen.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: September 10, 2002
    Assignee: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Paul F. Rom, Karyl L. Stapert, David B. DeWindt, Ronald A. Devries, Steven R. Gundry, William F. Sidor
  • Publication number: 20020045862
    Abstract: An obturator for a cannula includes an elongate member and a flexible disc. The cannula has proximal and distal ends and a lumen extending therebetween. The distal end of the cannula has a circular cross-section. The cannula also includes a first portion having a non-circular cross-section and at least one fluid aperture formed adjacent the distal end. The flexible disc of the obturator is coupled to a distal end of the elongate member, both of which are adapted to be telescopically received in the lumen of the cannula. The flexible disc is configured to restrict the flow of fluid, entering the at least one fluid aperture, through the lumen.
    Type: Application
    Filed: December 21, 2001
    Publication date: April 18, 2002
    Applicant: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Paul F. Rom, Karyl L. Stapert, David B. DeWindt, Ronald A. Devries, Steven R. Gundry, William E. Sidor
  • Patent number: 5967988
    Abstract: An improved retrograde coronary sinus perfusion catheter includes a flexible, tubular catheter body and an inflatable balloon. The catheter body has proximal and distal ends and an interior lumen. The inflatable balloon is located adjacent the distal end of the catheter body and has proximal and distal edges. The improvement includes an echogenicity enhancement embedded within the catheter body. The echogenicity enhancement is adapted to reflect ultrasonic waves at a characteristic different from the catheter body.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: October 19, 1999
    Assignee: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Philip T. Goforth
  • Patent number: 5807328
    Abstract: A catheter assembly having a selectively occluded and vented lumen is provided. The catheter includes an obturator for preventing the back flow of fluid from the distal tip of the catheter into a balloon provided on the body of the catheter. The catheter has at least one groove for venting the balloon during the process of inserting the catheter assembly into fluid under pressure. The combination of the obturator and the venting groove prohibits premature inflation of the balloon by pressurized fluid entering the distal end of the catheter and also enables for the venting of any air entrapped inside the balloon prior to inflation thereof. When incorporated into a retrograde cardioplegia solution catheter, this structure dramatically reduces the force needed to insert the catheter assembly into the coronary sinus and also reduces trauma to the tissue of the coronary sinus during the insertion process.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: September 15, 1998
    Assignee: Medtronic, Inc.
    Inventor: Roderick E. Briscoe
  • Patent number: 5429608
    Abstract: An apparatus for the sanitary simultaneous removal of a plurality of indwelling tubes from an implantation site in a patient comprises a tube adapter that is connectable to the indwelling tubes. An impervious sleeve is fan-folded into a hub which extends around the tube adapter. In assembly the folded sleeve is retained by a shrink-wrapped plastic film. The sleeve can be extended for receiving the indwelling tubes therethrough and to encompass the implantation site. The indwelling tube and the implantation site are isolated from the environment when the distal open end of the sleeve is extended and applied about the implantation site and the indwelling tube is withdrawn into the sleeve. A drawstring is provided for closing the distal end of the sleeve after the tube has been withdrawn. The indwelling tubes can be maintained under suction or in connection with a drain during the removal operation.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: July 4, 1995
    Assignee: DLP, Inc.
    Inventors: Paul F. Rom, Russell A. Corace, Roderick E. Briscoe
  • Patent number: 5385548
    Abstract: A catheter for retrograde perfusion of the heart through the coronary sinus, which has an infusion lumen for introducing perfusion liquid into the heart, a self inflating balloon, and a channeled flow tip at a distal end of the catheter for perfusing a cardioplegia solution into the coronary sinus.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: January 31, 1995
    Assignee: DLP, Inc.
    Inventors: Christopher R. Williams, Steven M. Gronsman, Roderick E. Briscoe
  • Patent number: 5364366
    Abstract: There is disclosed an apparatus for the sanitary removal of an indwelling tube from an implantation site in a patient, comprising a tube adapter that is connectable to the indwelling tube. An impervious sleeve is fan-folded into a hub which extends around the tube adapter. In assembly the folded sleeve is retained by a shrink-wrapped plastic film. The sleeve can be extended for receiving the indwelling tube therethrough and to encompass the implantation site. The indwelling tube and the implantation site are isolated from the environment when the distal open end of the sleeve is extended and applied about the implantation site and the indwelling tube is withdrawn into the sleeve. A drawstring is provided for closing the distal end of the sleeve after the tube has been withdrawn. Embodiments are shown for removing a plurality of indwelling tubes in one operation, and for maintaining the lumen of the indwelling tube under suction or in connection with a drain during the removal operation.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: November 15, 1994
    Assignee: DLP, Inc.
    Inventors: Paul F. Rom, Russell A. Corace, Roderick E. Briscoe
  • Patent number: 5336193
    Abstract: There is disclosed an apparatus comprising a hub that includes an annular container disposed about a central aperture for receiving an exterior portion of an indwelling tube therethrough to engage a bottom portion of the container in sealing contact with the implantation site. An extensible impervious membrane is folded within the container and is in sealing contact therewith, the membrane being arranged to form an open sleeve for receiving the tube and being coextensible therewith during withdrawal of the tube. A tie is provided to seal the sleeve about the exterior wall of tube, leaving the free end of the tube accessible to the operator. The indwelling tube can then be withdrawn through the central aperture into the coextending closed sleeve. A plastic film that adheres to the bottom portion of the container is provided for closing the central aperture to enclose the removed tube in the sleeve.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: August 9, 1994
    Assignee: DLP, Inc.
    Inventors: Paul F. Rom, Roderick E. Briscoe, Christopher R. Williams