Patents by Inventor Mark Ritchart

Mark Ritchart 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: 20100204537
    Abstract: Apparatus for delivering brachytherapy to a target tissue region includes an elongate body including a proximal end, a distal end sized for introduction into a tissue tract and carrying a plurality of elongate members including pathways for receiving a source of radiation. The elongate members are movable between collapsed and expanded configurations. During use, a tract is created through tissue, and the elongate body carrying the elongate members is advanced through the tract into a target location with the elongate members in the collapsed configuration. The elongate members are directed to the expanded configuration at the target location, and radiation is delivered to treat tissue at the target location, e.g., by introducing one or more radiation sources along the pathways.
    Type: Application
    Filed: April 21, 2010
    Publication date: August 12, 2010
    Inventors: George D. Hermann, Eduardo Chi Sing, Gail S. Lebovic, Mark A. Cole, Mark A. Ritchart, Than Nguyen
  • Publication number: 20100113920
    Abstract: In order to later identify the location of a biopsy or surgery, various means and methods for permanently and non-surgically marking selected tissue in the human body are used. Later visualization of the markers is readily accomplished using state-of-the-art imaging systems.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 6, 2010
    Inventors: Seth A. Foerster, Fred H. Burbank, Mark A. Ritchart, Elias A. Zerbouni
  • Publication number: 20100063415
    Abstract: A biopsy device and related method are disclosed. The biopsy device disclosed includes a needle having a lateral opening for receiving tissue. The needle may be rotatable with respect to a portion of the biopsy device, such as a housing of the biopsy device, and the needle may be offset from a center of the housing. A hollow cutter is disclosed for cutting tissue received in the lateral opening of the needle.
    Type: Application
    Filed: August 4, 2009
    Publication date: March 11, 2010
    Inventors: Mark A. Ritchart, J. Michael Stuart, Fred H. Burbank, Kareneth M. Gatt
  • Patent number: 7625397
    Abstract: In order to later identify the location of a biopsy or surgery, various means and methods for permanently and non-surgically marking selected tissue in the human body are used. Later visualization of the markers is readily accomplished using state-of-the-art imaging systems.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: December 1, 2009
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Seth A. Foerster, Fred H. Burbank, Mark A. Ritchart, Elias A. Zerbouni
  • Publication number: 20080221384
    Abstract: Apparatus for delivering brachytherapy to a target tissue region includes an elongate body including a proximal end, a distal end sized for introduction into a tissue tract and carrying a plurality of elongate members including pathways for receiving a source of radiation. The elongate members are movable between collapsed and expanded configurations. During use, a tract is created through tissue, and the elongate body carrying the elongate members is advanced through the tract into a target location with the elongate members in the collapsed configuration. The elongate members are directed to the expanded configuration at the target location, and radiation is delivered to treat tissue at the target location, e.g., by introducing one or more radiation sources along the pathways.
    Type: Application
    Filed: June 1, 2007
    Publication date: September 11, 2008
    Applicant: Cianna Medical, Inc.
    Inventors: Eduardo Chi Sing, George D. Hermann, Doug S. Sutton, Tommy G. Nguyen, Mark A. Ritchart, Steven L. Gex
  • Publication number: 20080154151
    Abstract: Instruments for performing percutaneous biopsy procedures are disclosed, which have advantageous features for improving functionality and performance over prior art devices. These instruments comprise two types, single-use devices, and multiple-use devices having active tissue capture capability. Improved features include the ability to retrieve and evaluate multiple tissue samples during a single insertion procedure, without physical handling of the samples, as well as constructional features, such as a molded tissue cassette housing, variant vacuum port embodiments suited for different tissue environments, and a method for backflushing the instrument to remove biological debris, among others.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 26, 2008
    Inventors: Mark A. Ritchart, J. Michael Stuart, Fred H. Burbank, Kenneth M. Galt
  • Publication number: 20080015594
    Abstract: An innovative bone anchor and methods for securing connective tissue, such as tendons, to bone are disclosed which permit a suture attachment which lies entirely beneath the cortical bone surface, and wherein the suturing material between the connective tissue and the bone anchor is oriented in a direction generally transverse to the longitudinal axis of the bone anchor, so that axial pull-out forces exerted on the bone anchor are minimized. The suture attachment to the bone anchor involves the looping of a substantial length of suturing material around a shaft of the anchor, thereby avoiding an eyelet connection which requires a knot and which concentrates stress on a very small portion of the suturing material. Thus, failure rates are greatly decreased over conventional techniques, and the inventive procedures are significantly easier to perform than conventional techniques.
    Type: Application
    Filed: July 17, 2007
    Publication date: January 17, 2008
    Applicant: ArthroCare Corporation
    Inventors: Mark Ritchart, Seth Foerster
  • Patent number: 7247164
    Abstract: An innovative bone anchor and methods for securing connective tissue, such as tendons, to bone are disclosed which permit a suture attachment which lies entirely beneath the cortical bone surface, and wherein the suturing material between the connective tissue and the bone anchor is oriented in a direction generally transverse to the longitudinal axis of the bone anchor, so that axial pull-out forces exerted on the bone anchor are minimized. The suture attachment to the bone anchor involves the looping of a substantial length of suturing material around a shaft of the anchor, thereby avoiding an eyelet connection which requires a knot and which concentrates stress on a very small portion of the suturing material. Thus, failure rates are greatly decreased over conventional techniques, and the inventive procedures are significantly easier to perform than conventional techniques.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: July 24, 2007
    Assignee: ArthroCare Corporation
    Inventors: Mark A. Ritchart, Seth A. Foerster
  • Publication number: 20070167665
    Abstract: Apparatus, systems, and methods are provided for delivering brachytherapy into a target tissue region, e.g., a breast. In some embodiments, a flexible brachytherapy device is implanted that includes a therapy delivery portion having one or more radioactive sources securely retained thereto, and a tail portion extending from the therapy delivery portion. The brachytherapy device may be implanted in a helical configuration within the target tissue region. To assist in placement and removal of the brachytherapy device, a tubular sheath may be implanted by attaching (e.g., sliding over) a helically coiled needle that is advanced into the body by screw-like rotation. Once implanted, the sheath and the brachytherapy device may extend outside the body, where they may be folded and secured flat against the skin. The device and sheath may be removed at therapy completion.
    Type: Application
    Filed: November 8, 2006
    Publication date: July 19, 2007
    Inventors: George Hermann, Gail Lebovic, Mark Ritchart
  • Publication number: 20070156064
    Abstract: Instruments for performing percutaneous biopsy procedures are disclosed, which have advantageous features for improving functionality and performance over prior art devices. These instruments comprise two types, single-use devices, and multiple-use devices having active tissue capture capability. Improved features include the ability to retrieve and evaluate multiple tissue samples during a single insertion procedure, without physical handling of the samples, as well as constructional features, such as a molded tissue cassette housing, variant vacuum port embodiments suited for different tissue environments, and a method for backflushing the instrument to remove biological debris, among others.
    Type: Application
    Filed: February 6, 2007
    Publication date: July 5, 2007
    Inventors: Mark Ritchart, J. Michael Stuart, Fred Burbank, Kenneth Galt
  • Patent number: 7229417
    Abstract: Implantable devices and methods of use are disclosed for marking the location of a biopsy or surgery for the purpose of identification. The methods include providing a biodegradable radiodense implant and taking a tissue sample from a biopsy site within a breast of a patient. The biodegradable implant is then positioned at the biopsy site. The tissue sample is tested and the biopsy site is then relocated. In one embodiment, the entire implant is radiodense. In another embodiment, the entire implant is biodegradable. Methods of using a biodegradable implant having a radiodense material and a biodegradable implant that is visible using an imaging system are also included.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: June 12, 2007
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Seth A. Foerster, Fred H. Burbank, Mark A. Ritchart, Elias A. Zerbouni
  • Patent number: 7226424
    Abstract: Instruments for performing percutaneous biopsy procedures are disclosed, which have advantageous features for improving functionality and performance over prior art devices. These instruments comprise two types, single-use devices, and multiple-use devices having active tissue capture capability. Improved features include the ability to retrieve and evaluate multiple tissue samples during a single insertion procedure, without physical handling of the samples, as well as constructional features, such as a molded tissue cassette housing, variant vacuum port embodiments suited for different tissue environments, and a method for backflushing the instrument to remove biological debris, among others.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: June 5, 2007
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Mark A. Ritchart, J. Michael Stuart, Fred H. Burbank, Kenneth M. Galt
  • Publication number: 20070106108
    Abstract: Apparatus for delivering brachytherapy to a target tissue region includes an elongate body including a proximal end, a distal end sized for introduction into a tissue tract and carrying a plurality of elongate members including pathways for receiving a source of radiation. The elongate members are movable between collapsed and expanded configurations. During use, a tract is created through tissue, and the elongate body carrying the elongate members is advanced through the tract into a target location with the elongate members in the collapsed configuration. The elongate members are directed to the expanded configuration at the target location, and radiation is delivered to treat tissue at the target location, e.g., by introducing one or more radiation sources along the pathways.
    Type: Application
    Filed: March 16, 2006
    Publication date: May 10, 2007
    Inventors: George Hermann, Eduardo Chi Sing, Gail Lebovic, Mark Cole, Mark Ritchart, Than Nguyen
  • Publication number: 20060271105
    Abstract: Devices and methods are disclosed for securing soft tissue to bone, and particularly for axially anchoring suture which attaches the soft tissue to adjacent bone structure.
    Type: Application
    Filed: August 2, 2006
    Publication date: November 30, 2006
    Inventors: Seth Foerster, Norman Gordon, Mark Ritchart, Gregory Bain, George White
  • Patent number: 7090690
    Abstract: Devices and methods are disclosed for securing soft tissue to bone, and particularly for axially anchoring suture which attaches the soft tissue to adjacent bone structure.
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: August 15, 2006
    Assignee: Arthrocare Corporation
    Inventors: Seth A. Foerster, Norman S. Gordon, Mark A. Ritchart, Gregory H. Bain, George White
  • Publication number: 20060167377
    Abstract: Instruments for performing percutaneous biopsy procedures are disclosed, which have advantageous features for improving functionality and performance over prior art devices. These instruments comprise two types, single-use devices, and multiple-use devices having active tissue capture capability. Improved features include the ability to retrieve and evaluate multiple tissue samples during a single insertion procedure, without physical handling of the samples, as well as constructional features, such as a molded tissue cassette housing, variant vacuum port embodiments suited for different tissue environments, and a method for backflushing the instrument to remove biological debris, among others.
    Type: Application
    Filed: March 24, 2006
    Publication date: July 27, 2006
    Inventors: Mark Ritchart, J. Stuart, Fred Burbank, Kenneth Galt
  • Patent number: 7044957
    Abstract: In order to later identify the location of a biopsy or surgery, various means and methods for permanently and non-surgically marking selected tissue in the human body are used. Later visualization of the markers is readily accomplished using state-of-the-art imaging systems.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: May 16, 2006
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Seth A. Foerster, Fred H. Burbank, Mark A. Ritchart, Elias A. Zerhouni
  • Publication number: 20060074443
    Abstract: A biopsy localization device made according to the invention includes an intracorporeal delivery cannula and at least one marker disposed within an inner lumen of the delivery cannula. The marker includes an expandable fibrous body with at least one radiographically detectable marker element. The expandable fibrous body may also be bioabsorbable. Methods of use of the device are also described.
    Type: Application
    Filed: November 18, 2005
    Publication date: April 6, 2006
    Inventors: Seth Foerster, Fred Burbank, Mark Ritchart, Elias Zerbouni
  • Patent number: 6976968
    Abstract: A tissue sampling apparatus comprises a tubular body having a primary lumen for receiving a tissue sample. The tubular body includes a distal end, a proximal end, and a longitudinal axis extending from the proximal end to the distal end. The tissue sampling apparatus further comprises a cutting cylinder having a distal cutting edge, which is movable both distally and proximally relative to the tubular body. A band having an eyelet disposed therein extends across a distal end of the tissue sampling apparatus, wherein the eyelet is advantageously movable relative to the distal cutting edge in order to sever a distal end of the tissue sample.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: December 20, 2005
    Inventors: Mark A. Ritchart, George White
  • Publication number: 20050165305
    Abstract: In order to later identify the location of a biopsy or surgery, various means and methods for permanently and non-surgically marking selected tissue in the human body are used. Later visualization of the markers is readily accomplished using state-of-the-art imaging systems.
    Type: Application
    Filed: December 12, 2003
    Publication date: July 28, 2005
    Inventors: Seth Foerster, Fred Burbank, Mark Ritchart, Elias Zerhouni