Patents by Inventor Peter T. Keith

Peter T. Keith 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: 7976564
    Abstract: Devices and methods for sealing a passageway formed by a patent foramen ovale (PFO track) in the heart are provided. One method includes providing an abrading device to the PFO track and abrading the tissue within the PFO track. The abraded tissue forming the PFO track is then held together under pressure, either via lowering right atrial pressure or via applying suction to the septum primum to pull it into apposition against the septum secundum. After a sufficient period of time, the pressure is released and the abraded tissue heals to form a robust seal over the PFO track. Additionally, several devices are provided which can be placed into the PFO track to apply adhesive to the walls of the PFO track. The devices may or may not be left within the PFO track. If the devices are not left within the PFO track, the walls of the PFO track, covered with adhesive, are brought into apposition with one another and adhered together.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: July 12, 2011
    Assignee: St. Jude Medical, Cardiology Division, Inc.
    Inventors: David J. Blaeser, Peter T. Keith, Jerome K. Grudem, Jr., Scott A. Olson, Steven S. Hackett, Thomas V. Ressemann, Joel D. Phillips, Mark R. Christianson, Dennis W. Wahr
  • Patent number: 7959603
    Abstract: An evacuation sheath assembly and method of treating occluded vessels which reduces the risk of distal embolization during vascular interventions is provided. A method of treating a blood vessel, includes providing an elongate member having proximal and distal ends, a lumen therebetween, the distal end having a braided sheath expandable between a reduced and expanded diameter, and a fluid-tight covering. The elongate member is advanced into a blood vessel that supplies blood to the heart. The braided sheath is expanded to engage the endoluminal surface of the blood vessel and stop antegrade flow.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: June 14, 2011
    Assignee: St. Jude Medical, Cardiology Division, Inc.
    Inventors: Dennis W. Wahr, Thomas V. Ressemann, Peter T. Keith, David J. Blaeser, Michael Berman
  • Patent number: 7949400
    Abstract: Devices, systems and methods are disclosed by which the blood pressure, nervous system activity, and neurohormonal activity may be selectively and controllably reduced by activating baroreceptors. A baroreceptor activation device is positioned near a baroreceptor, preferably a baroreceptor located in the carotid sinus. A control system may be used to modulate the baroreceptor activation device. The control system may utilize an algorithm defining a stimulus regimen which promotes long term efficacy and reduces power requirements/consumption. The baroreceptor activation device may utilize RF-coupled or other electrodes to activate the baroreceptors. The electrodes may be adapted for connection to the carotid arteries at or near the carotid sinus, and may be designed to minimize extraneous tissue stimulation.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: May 24, 2011
    Assignee: CVRx, Inc.
    Inventors: Robert S. Kieval, Bruce J. Persson, David J. Serdar, Peter T. Keith, Martin A. Rossing
  • Publication number: 20110106132
    Abstract: Methods are provided for partial aortic obstruction for cerebral perfusion augmentation in patients suffering from global or focal cerebral ischemia. Alternatively, the methods can be used to partially obstruct aortic blood flow to condition the spinal cord to secrete neuroprotective agents prior to abdominal aortic aneurysm repair. Partial obstruction of a vessel can be accomplished by a device comprising an elongate catheter and a distally mounted expandable member. The expandable member may comprise one or two balloons. Other medical devices, such as an angioplasty, stent, or atherectomy catheter, can be inserted distal the expandable member to provide therapeutic intervention.
    Type: Application
    Filed: January 10, 2011
    Publication date: May 5, 2011
    Inventors: Denise R. Barbut, Peter T. Keith, Steven W. Berhow, Jon P. St. Germain
  • Patent number: 7927268
    Abstract: A method for mechanically assisting the pumping action of the heart. A catheter is provided comprising an elongate member having a proximal end, a distal region, an expandable member attached in the distal region, and an inflatable member in the distal region and attached distal the expandable member. The catheter is advanced into the aorta. The expandable member is expanded to at least partially obstruct the aorta. The inflatable member is inflated during diastole. The inflatable member is then deflated during the ejection phase of the left ventricle while expansion of the expandable member is maintained. The pumping action of the heart is thereby mechanically assisted. Cerebral perfusion augmentation may also be achieved by use of combined coarctation-counterpulsation devices and methods. Devices for practicing methods with increased volume-displacement efficiency are also described.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: April 19, 2011
    Assignee: CoAxia, Inc.
    Inventors: Jon P. St. Germain, Peter T. Keith, Denise R. Barbut
  • Patent number: 7918871
    Abstract: A method of treating a constricted sinus passageway in a frontal sinus of a patient includes forming an artificial passageway into the frontal sinus of the patient with a tool. An elongate member having an inflation member thereon is inserted through the passageway. The inflation member is positioned with the constricted sinus passageway and the inflation member is expanded so as to expand at least a portion of the constricted sinus passageway.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: April 5, 2011
    Assignee: Entellus Medical, Inc.
    Inventors: Theodore O. Truitt, Thomas V. Ressemann, Peter T. Keith
  • Publication number: 20110077656
    Abstract: The various embodiments disclosed herein relate to implantable devices for the treatment of a structural bone and deformity. More specifically, the various embodiments include systems, devices, and methods for implantation of a flexible or tension band for treating such a deformity, including hallux valgus.
    Type: Application
    Filed: September 25, 2009
    Publication date: March 31, 2011
    Inventors: Paul M. Sand, Peter T. Keith, John Avi Roop, Joshua Baltzell, Jason W. Lettmann
  • Patent number: 7905923
    Abstract: Devices and methods for treating a damaged intervertebral disc to reduce or eliminate associated back pain. The present invention provides disc reinforcement therapy (DRT) which involves implanting one or more reinforcement members in and preferably around the annulus of the disc. The reinforcement members may be used to stabilize the annulus and/or compresses a portion of the annulus so as to reduce a bulge and/or close a fissure. The implantable devices and associated delivery tools may incorporate heating capabilities to thermally treat the annular tissue. Alternatively or in combination, other devices may be specifically employed for such thermal treatment.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: March 15, 2011
    Assignee: Anulex Technologies, Inc.
    Inventors: Peter T. Keith, Robert E. Atkinson
  • Publication number: 20110040320
    Abstract: A method of remodeling the uncinate process associated with a paranasal sinus includes positioning at least one shim member in the infundibulum, the shim member deforming the uncinate process and widening at least a portion of the infundibulum. The infundibulum space may be dilated with a dilating member. Dilation may occur prior to delivery of the at least one shim. The dilation member may be delivered into the sinus cavity via an access passageway formed in the canine fossa.
    Type: Application
    Filed: October 26, 2010
    Publication date: February 17, 2011
    Applicant: ENTELLUS MEDICAL, INC.
    Inventors: Peter T. Keith, Theodore O. Truitt, Thomas V. Ressemann
  • Patent number: 7879061
    Abstract: A balloon catheter for treating a constricted sinus passageway of a patient includes an elongate flexible shaft defining a lumen therein, the elongate flexible shaft having a proximal end and distal region. The elongate flexible shaft may include a kink-resistant coil in the distal region. A hub is affixed to the proximal end of the elongate flexible shaft, the hub including a port in communication with the lumen. An expandable member is disposed on the distal region of the elongate flexible shaft, wherein an interior portion of the expandable member is in communication with the lumen.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: February 1, 2011
    Assignee: Entellus Medical, Inc.
    Inventors: Peter T. Keith, Thomas V. Ressemann, Theodore O. Truitt
  • Publication number: 20110015714
    Abstract: Devices and methods for stabilizing a lead in a cardiac vein.
    Type: Application
    Filed: September 10, 2010
    Publication date: January 20, 2011
    Inventors: Robert E. Atkinson, Peter T. Keith, Michael Berman
  • Patent number: 7867195
    Abstract: Methods are provided for partial aortic obstruction for cerebral perfusion augmentation in patients suffering from global or focal cerebral ischemia. Alternatively, the methods can be used to partially obstruct aortic blood flow to condition the spinal cord to secrete neuroprotective agents prior to abdominal aortic aneurysm repair. Partial obstruction of a vessel can be accomplished by a device comprising an elongate catheter and a distally mounted expandable member. The expandable member may comprise one or two balloons. Other medical devices, such as an angioplasty, stent, or atherectomy catheter, can be inserted distal the expandable member to provide therapeutic intervention.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: January 11, 2011
    Assignee: CoAxia, Inc.
    Inventors: Denise R. Barbut, Peter T. Keith, Steven W. Berhow, Jon P. St. Germain
  • Patent number: 7867216
    Abstract: An evacuation sheath assembly and method of treating occluded vessels which reduces the risk of distal embolization during vascular interventions is provided. A method of treating a lesion within a blood vessel, e.g., a coronary artery, includes advancing a sheath into the blood vessel, the sheath having a lumen extending to a port at a distal end of the sheath and further having an occlusive member within a distal region of the sheath. The occlusive member is then positioned within the blood vessel proximal to the lesion. Subsequently, the occlusive member is deployed, thereby stopping antegrade flow across the lesion. A contrast agent can then be infused through a port in the sheath. A dilation balloon is then advanced across the lesion. Suction is then applied to the lumen to induce retrograde flow across the lesion after dilating the lesion.
    Type: Grant
    Filed: January 19, 2006
    Date of Patent: January 11, 2011
    Assignee: St. Jude Medical, Cardiology Division, Inc.
    Inventors: Dennis W. Wahr, Thomas V. Ressemann, Peter T. Keith, David J. Blaeser, Michael Berman
  • Patent number: 7842062
    Abstract: A method of remodeling the uncinate process associated with a paranasal sinus includes positioning at least one shim member in the infundibulum, the shim member deforming the uncinate process and widening at least a portion of the infundibulum. The infundibulum space may be dilated with a dilating member. Dilation may occur prior to delivery of the at least one shim. The dilation member may be delivered into the sinus cavity via an access passageway formed in the canine fossa.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: November 30, 2010
    Assignee: Entellus Medical, Inc.
    Inventors: Peter T. Keith, Theodore O. Truitt, Thomas V. Ressemann
  • Patent number: 7840271
    Abstract: Devices, systems and methods by which the blood pressure, nervous system activity, and neurohormonal activity may be selectively and controllably reduced by activating baroreceptors. A baroreceptor activation device is positioned near a baroreceptor, for example a baroreceptor in the carotid sinus. A control system may be used to modulate the baroreceptor activation device. The control system may utilize an algorithm defining a stimulus regimen which promotes long term efficacy and reduces power requirements/consumption.
    Type: Grant
    Filed: July 20, 2005
    Date of Patent: November 23, 2010
    Assignee: CVRx, Inc.
    Inventors: Robert S. Kieval, Bruce J. Persson, David J. Serdar, Peter T. Keith
  • Publication number: 20100274222
    Abstract: Described herein are methods and devices for delivering a drug to the frontal sinus system. An inflatable implant is positioned within the frontal sinus system using an anchoring means secured within the frontal sinus cavity. A drug-containing fluid is released directly into the frontal sinus drainage system.
    Type: Application
    Filed: April 23, 2010
    Publication date: October 28, 2010
    Applicant: ENTELLUS MEDICAL, INC.
    Inventors: Reuben C. Setliff, III, Peter T. Keith
  • Publication number: 20100249874
    Abstract: Devices, systems and methods are described by which the blood pressure, nervous system activity, and neurohormonal activity may be selectively and controllably reduced by activating baroreceptors. A baroreceptor activation device is positioned near a baroreceptor, preferably a baroreceptor located in the carotid sinus. A control system may be used to modulate the baroreceptor activation device. The control system may utilize an algorithm defining a stimulus regimen which promotes long term efficacy and reduces power requirements/consumption. The baroreceptor activation device may utilize electrodes to activate the baroreceptors. The electrodes may be adapted for connection to the carotid arteries at or near the carotid sinus, and may be designed to minimize extraneous tissue stimulation.
    Type: Application
    Filed: May 21, 2010
    Publication date: September 30, 2010
    Inventors: Stephen L. Bolea, Robert S. Kieval, Bruce J. Persson, David J. Serdar, Peter T. Keith, Eric D. Irwin, Martin A. Rossing
  • Publication number: 20100234855
    Abstract: An embolic protection system and method of treating occluded vessels which reduces the risk of distal embolization during vascular interventions is provided. The embolic protection system includes a guide catheter, a multi-lumen tube having a sealing surface on the distal end and an interventional device. A method of treating a blood vessel includes providing a guide catheter and a multi-lumen elongate member having proximal and distal ends, evacuation and inflation lumens extending therebetween and a sealing surface on the distal end. The elongate member is advanced through the guide catheter into a blood vessel that supplies blood to the heart proximal a lesion. The sealing surface is expanded to engage the endoluminal surface of the blood vessel and stop antegrade flow. An interventional device is advanced through the evacuation lumen to treat the lesion.
    Type: Application
    Filed: May 24, 2010
    Publication date: September 16, 2010
    Inventors: DENNIS W. WAHR, Thomas V. Ressemann, Peter T. Keith, David J. Blaeser, Michael Berman
  • Publication number: 20100234882
    Abstract: A device for sealing a patent foramen ovale (PFO) in the heart is provided. The device includes a left atrial anchor adapted to be placed in a left atrium of the heart, a right atrial anchor adapted to be placed in a right atrium of the heart, and an elongate member adapted to extend through the passageway and connect the left and right atrial anchors. The right atrial anchor preferably includes a plurality of arms and a cover attached to the arms. The left atrial anchor also includes a plurality of arms and preferably does not include a cover. Preferably, the elongate member has a first end of fixedly connected to the left atrial anchor and a portion, proximal to the first end, releasably connected to the right atrial anchor. Preferably, the elongate member is flexible.
    Type: Application
    Filed: May 17, 2010
    Publication date: September 16, 2010
    Applicant: ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC.
    Inventors: Dennis W. Wahr, David J. Blaeser, Peter T. Keith, Thomas V. Ressemann
  • Publication number: 20100234881
    Abstract: Devices and methods for sealing a passageway formed by a patent foramen ovale (PFO track) in the heart are provided. One method includes providing an abrading device to the PFO track and abrading the tissue within the PFO track. The abraded tissue forming the PFO track is then held together under pressure, either via lowering right atrial pressure or via applying suction to the septum primum to pull it into apposition against the septum secundum. After a sufficient period of time, the pressure is released and the abraded tissue heals to form a robust seal over the PFO track. Additionally, several devices are provided which can be placed into the PFO track to apply adhesive to the walls of the PFO track. The devices may or may not be left within the PFO track. If the devices are not left within the PFO track, the walls of the PFO track, covered with adhesive, are brought into apposition with one another and adhered together.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 16, 2010
    Applicant: St. Jude Medical, Cardiology Division, Inc.
    Inventors: David J. Blaeser, Peter T. Keith, Jerome K. Grudem, JR., Scott A. Olson, Steven S. Hackett, Thomas V. Ressemann, Joel D. Phillips, Mark R. Christianson, Dennis W. Wahr