Patents by Inventor Mark P. Parker

Mark P. Parker 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: 6769433
    Abstract: A catheter includes a plurality of primary leads to deliver energy for ligating a hollow anatomical structure. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that each primary lead can individually receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with an anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. Where the hollow anatomical structure is a vein, energy is applied until the diameter of the vein is reduced to the point where the vein is occluded. In one embodiment, a secondary lead is surrounded by the primary leads, and extends beyond the primary leads.
    Type: Grant
    Filed: May 25, 2001
    Date of Patent: August 3, 2004
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Arthur W. Zikorus, Mark P. Parker, Christopher S. Jones, Douglas M. Petty, Brian E. Farley, Joseph M. Tartaglia
  • Patent number: 6689126
    Abstract: A catheter includes a plurality of primary leads to deliver energy for ligating a hollow anatomical structure. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that each primary lead can individually receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with a hollow anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. Where the hollow anatomical structure is a vein, energy is applied until the diameter of the vein is reduced to the point where the vein is occluded. In one embodiment, a balloon is inflated to occlude the structure before the application of energy.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: February 10, 2004
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Brian E. Farley, Dawn A. Henderson, Christopher S. Jones, Mark P. Parker, Joseph M. Tartaglia
  • Patent number: 6682526
    Abstract: A catheter includes a first plurality of expandable leads and a second plurality of expandable leads separate and longitudinally spaced-apart from the first plurality to deliver energy to a hollow anatomical structure, such as vein, fallopian tube, hemorrhoid, esophageal varix, to effectively ligate that structure. Each of the leads includes an electrode located at the distal end of the respective electrode lead. Polarizations of the leads may be selected to achieve the power distribution desired. Each electrode lead includes an outward bend such that when a movable sheath is moved out of contact with the leads, they expand outwardly into apposition with an inner wall of the structure to be ligated. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: January 27, 2004
    Assignee: Vnus Medical Technologies, Inc.
    Inventors: Christopher S. Jones, Arthur W. Zikorus, Mark P. Parker, Brian E. Farley, Joseph M. Tartaglia
  • Patent number: 6638273
    Abstract: A catheter having expandable electrodes for applying energy to a hollow anatomical structure such as a vein. When used on a vein, the catheter is useful for a minimally invasive treatment of venous insufficiency. The catheter includes conductive end rings to which the electrodes are attached, for mechanically connecting and electrically tying electrodes together to provide for a single wire electrical connection points, for transmitting energy while more evenly spacing the electrodes. Expandable arms are formed of electrically conductive material and insulated along their length except for an intermediate section that functions as the electrode. The arms are tapered to allow more room for wiring and to reduce the possibility of shorting between the ends of the arms. The catheter further includes thermocouples in the electrodes for measuring temperatures on the outer surface of the electrode. Slots are formed in the arms for mounting the thermocouples.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: October 28, 2003
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Brian E. Farley, Grace Y. Schulz, Dawn A. Henderson, Mark P. Parker, Arthur W. Zikorus, Gary H. Miller, Jay S. Daulton, Douglas Portnow
  • Publication number: 20030191512
    Abstract: A catheter delivers an electrode within a vein for a minimally invasive treatment of varicose veins and venous insufficiency using RF energy. The catheter is introduced into a patient and positioned within the section of the vein to be treated. The electrode radiates high frequency energy towards the vein, and the surrounding venous tissue becomes heated and begins to shrink. The catheter includes a controllable member for limiting the amount of shrinkage of the vein to the diameter of the member. The electrode remains active until there has been sufficient shrinkage of the vein. The extent of shrinkage of the vein may be detected by fluoroscopy. After treating one section of the vein, the catheter and the electrode can be repositioned intraluminally within the vein to treat different sections of the vein until all desired venous sections and valves are repaired and rendered functionally competent.
    Type: Application
    Filed: March 25, 2003
    Publication date: October 9, 2003
    Inventors: Michael D. Laufer, Brian E. Farley, Grace Y. Schulz, Arthur W. Zikorus, Mark P. Parker
  • Patent number: 6613045
    Abstract: A catheter delivers an electrode within a vein for a minimally invasive treatment of varicose veins and venous insufficiency using RF energy. The catheter is introduced into a patient and positioned within the section of the vein to be treated. The electrode radiates high frequency energy towards the vein, and the surrounding venous tissue becomes heated and begins to shrink. The catheter includes a controllable member for limiting the amount of shrinkage of the vein to the diameter of the member. The electrode remains active until there has been sufficient shrinkage of the vein. The extent of shrinkage of the vein may be detected by fluoroscopy. After treating one section of the vein, the catheter and the electrode can be repositioned intraluminally within the vein to treat different sections of the vein until all desired venous sections and valves are repaired and rendered functionally competent.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: September 2, 2003
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Michael D. Laufer, Brian E. Farley, Grace Y. Schulz, Arthur W. Zikorus, Mark P. Parker
  • Publication number: 20030125759
    Abstract: Apparatuses and methods for removing veins, usually varicose veins, rely on endoluminal capture of a distal end of the vein segment to be removed. In the illustrated embodiments, a shaft having reciprocatable penetrating elements is used to engage and capture the distal end of the vein. After rotating the shaft to pull the distal segment of the vein away from the connecting tissue, the shaft is withdrawn proximally, invaginating the segment back to the point of insertion.
    Type: Application
    Filed: December 3, 2002
    Publication date: July 3, 2003
    Applicant: VNUS Medical Technologies, Inc.
    Inventors: Michael S. Mirizzi, Mark P. Parker, Radit Tantisira, John Rodriguez
  • Publication number: 20020148476
    Abstract: A catheter includes a plurality of expandable primary leads to deliver energy to a fallopian tube, a vein such as a hemorrhoid or an esophageal varix, or another hollow anatomical structure requiring ligation or occlusion. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that the leads can receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with a hollow anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another.
    Type: Application
    Filed: June 7, 2002
    Publication date: October 17, 2002
    Inventors: Brian E.. Farley, Christopher S. Jones, Mark P. Parker, Joseph M. Tartaglia, Arthur W. Zikorus
  • Publication number: 20020147445
    Abstract: A catheter includes a plurality of primary leads to deliver energy for ligating a hollow anatomical structure. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that each primary lead can individually receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with a hollow anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. Where the hollow anatomical structure is a vein, energy is applied until the diameter of the vein is reduced to the point where the vein is occluded. In one embodiment, a balloon is inflated to occlude the structure before the application of energy.
    Type: Application
    Filed: June 3, 2002
    Publication date: October 10, 2002
    Inventors: Brian E. Farley, Dawn A. Henderson, Christopher S. Jones, Mark P. Parker, Joseph M. Tartaglia
  • Patent number: 6401719
    Abstract: A catheter includes a plurality of expandable primary leads to deliver energy to a fallopian tube, a vein such as a hemorrhoid or an esophageal varix, or another hollow anatomical structure requiring ligation or occlusion. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that the leads can receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with a hollow anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: June 11, 2002
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Brian E. Farley, Christopher S. Jones, Mark P. Parker, Joseph M. Tartaglia, Arthur W. Zikorus
  • Patent number: 6398780
    Abstract: A catheter includes a plurality of primary leads to deliver energy for ligating a hollow anatomical structure. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that each primary lead can individually receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with a hollow anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. Where the hollow anatomical structure is a vein, energy is applied until the diameter of the vein is reduced to the point where the vein is occluded. In one embodiment, a balloon is inflated to occlude the structure before the application of energy.
    Type: Grant
    Filed: February 3, 2000
    Date of Patent: June 4, 2002
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Brian E. Farley, Dawn A. Henderson, Christopher S. Jones, Mark P. Parker, Joseph M. Tartaglia
  • Publication number: 20020007181
    Abstract: A catheter includes a plurality of primary leads to deliver energy for ligating a hollow anatomical structure. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that each primary lead can individually receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with an anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. Where the hollow anatomical structure is a vein, energy is applied until the diameter of the vein is reduced to the point where the vein is occluded. In one embodiment, a secondary lead is surrounded by the primary leads, and extends beyond the primary leads.
    Type: Application
    Filed: May 25, 2001
    Publication date: January 17, 2002
    Inventors: Arthur W. Zikorus, Mark P. Parker, Christopher S. Jones, Douglas M. Petty, Brian E. Farley, Joseph M. Tartaglia
  • Patent number: 6237606
    Abstract: A catheter includes a plurality of primary leads to deliver energy for ligating a hollow anatomical structure. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that each primary lead can individually receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with an anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. Where the hollow anatomical structure is a vein, energy is applied until the diameter of the vein is reduced to the point where the vein is occluded. In one embodiment, a secondary lead is surrounded by the primary leads, and extends beyond the primary leads.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: May 29, 2001
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Arthur W. Zikorus, Mark P. Parker, Christopher S. Jones, Douglas M. Petty, Brian E. Farley, Joseph M. Tartaglia
  • Patent number: 6200312
    Abstract: A catheter includes a plurality of primary leads to deliver energy for ligating a hollow anatomical structure. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that each primary lead can individually receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with an anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. Where the hollow anatomical structure is a vein, energy is applied until the diameter of the vein is reduced to the point where the vein is occluded. In one embodiment, a secondary lead is surrounded by the primary leads, and extends beyond the primary leads.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: March 13, 2001
    Assignee: Vnus Medical Technologies, Inc.
    Inventors: Arthur W. Zikorus, Mark P. Parker, Christopher S. Jones, Douglas M. Petty, Brian E. Farley, Joseph M. Tartaglia
  • Patent number: 6179832
    Abstract: A catheter includes a first plurality of expandable leads and a second plurality of expandable leads separate and longitudinally spaced-apart from the first plurality to deliver energy to a hollow anatomical structure, such as vein, fallopian tube, hemorrhoid, esophageal varix, to effectively ligate that structure. Each of the leads includes an electrode located at the distal end of the respective electrode lead. Polarizations of the leads may be selected to achieve the power distribution desired. Each electrode lead includes an outward bend such that when a movable sheath is moved out of contact with the leads, they expand outwardly into apposition with an inner wall of the structure to be ligated. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: January 30, 2001
    Assignee: Vnus Medical Technologies, Inc.
    Inventors: Christopher S. Jones, Arthur W. Zikorus, Mark P. Parker, Brian E. Farley, Joseph M. Tartaglia
  • Patent number: 6165172
    Abstract: A catheter includes a plurality of primary leads to deliver energy for ligating a hollow anatomical structure. Each of the primary leads includes an electrode located at the working end of the catheter. Separation is maintained between the primary leads such that each primary lead can individually receive power of selected polarity. The primary leads are constructed to expand outwardly to place the electrodes into apposition with a hollow anatomical structure. High frequency energy can be applied from the leads to create a heating effect in the surrounding tissue of the anatomical structure. The diameter of the hollow anatomical structure is reduced by the heating effect, and the electrodes of the primary leads are moved closer to one another. Where the hollow anatomical structure is a vein, energy is applied until the diameter of the vein is reduced to the point where the vein is occluded. In one embodiment, a balloon is inflated to occlude the structure before the application of energy.
    Type: Grant
    Filed: October 26, 1997
    Date of Patent: December 26, 2000
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Brian E. Farley, Dawn A. Henderson, Christopher S. Jones, Mark P. Parker, Joseph M. Tartaglia
  • Patent number: 6152899
    Abstract: A catheter having expandable electrodes for applying energy to a hollow anatomical structure such as a vein. When used on a vein, the catheter is useful for a minimally invasive treatment of venous insufficiency. The catheter includes conductive end rings to which the electrodes are attached, for mechanically connecting and electrically tying electrodes together to provide for a single wire electrical connection points, for transmitting energy while more evenly spacing the electrodes. Expandable arms are formed of electrically conductive material and insulated along their length except for an intermediate section that functions as the electrode. The arms are tapered to allow more room for wiring and to reduce the possibility of shorting between the ends of the arms. The catheter further includes thermocouples in the electrodes for measuring temperatures on the outer surface of the electrode. Slots are formed in the arms for mounting the thermocouples.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: November 28, 2000
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Brian E. Farley, Grace Y. Schulz, Dawn A. Henderson, Mark P. Parker, Arthur W. Zikorus, Gary H. Miller, Jay S. Daulton, Douglas Portnow
  • Patent number: 6149660
    Abstract: A delivery device and method for intraluminally deploying a clip appliance within a body lumen or cavity of a patient, for example a vein. The clip is configured from a wire-like, bendable material, having a "W"-like sinusoidal shape. The clip is constructed with sharpened slanted edges at the tips which provide preferential bending and straightening when the clip is deployed into patient tissue, for example, a venous valve. The delivery device comprises a catheter and a structure for bending and releasing the clip. The catheter is configured with an elongate flexible tubular member secured to a slotted housing having a distal tapered tip. A handle is secured to the proximal end of the flexible tubular member. A balloon and actuator arm combination is disclosed for forcing a clip against an anvil to bend the clip from an open to a closed condition and for releasing the clip from a slot in a side wall of the housing. The housing may be configured to retain and deploy a plurality of clip appliances.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: November 21, 2000
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Michael D. Laufer, Gary H. Miller, Mark P. Parker
  • Patent number: 6036687
    Abstract: A catheter delivers an electrode within a vein for a minimally invasive treatment of varicose veins and venous insufficiency using RF energy. The catheter is introduced into a patient and positioned within the section of the vein to be treated. The electrode radiates high frequency energy towards the vein, and the surrounding venous tissue becomes heated and begins to shrink. The catheter includes a controllable member for limiting the amount of shrinkage of the vein to the diameter of the member. The electrode remains active until there has been sufficient shrinkage of the vein. The extent of shrinkage of the vein may be detected by fluoroscopy. After treating one section of the vein, the catheter and the electrode can be repositioned intraluminally within the vein to treat different sections of the vein until all desired venous sections and valves are repaired and rendered functionally competent.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: March 14, 2000
    Assignee: VNUS Medical Technologies, Inc.
    Inventors: Michael D. Laufer, Brian E. Farley, Grace Y. Schulz, Arthur W. Zikorus, Mark P. Parker
  • Patent number: 6033398
    Abstract: A catheter introduces electrodes in a vein for a minimally invasive treatment of venous insufficiency by the application of energy to cause selective heating of the vein. The catheter is positioned within the vein to be treated, and the electrodes on the catheter are moved toward one side of the vein. RF energy is applied in a directional manner from the electrodes at the working end of the catheter to cause localized heating and corresponding shrinkage of the adjacent venous tissue, which may include commissures, leaflets and ostia. Fluoroscopy or ultrasound may be used to detect shrinkage of the vein. After treating one section of the vein, the catheter can be repositioned to place the electrodes to treat different sections of the vein until all desired venous valves are repaired and rendered functionally competent.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: March 7, 2000
    Assignee: Vnus Medical Technologies, Inc.
    Inventors: Brian E. Farley, Michael D. Laufer, Dawn A. Henderson, Douglas M. Petty, Mark P. Parker