Patents by Inventor R. Grafton

R. Grafton 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: 20080004659
    Abstract: A method and device for knotless fixation of tissue. A swivel anchor having a rotatable forked anchor tip is used to capture suture, such as a suture chain, for surgical tissue repair without requiring suture knots. Tension on the repair constructs is adjustable through the selection of the specific chain link or links of the suture chain captured by the forked anchor tip of the swivel anchor. The swivel anchor is secured in a hole in bone by advancing a fixation device, such as a cannulated interference screw, over the body of the anchor.
    Type: Application
    Filed: May 18, 2007
    Publication date: January 3, 2008
    Inventors: Stephen Burkhart, R. Grafton, Peter Dreyfuss
  • Publication number: 20070288027
    Abstract: A bioabsorbable, cannulated tissue tack having an oblong head is used in sutureless soft tissue fixation to bone, particularly in arthroscopic shoulder surgery. A plurality of ribs are formed along the shaft of the tack. Repair of the glenohumeral joint is performed by installing the tack through a hole formed through the soft tissue of the labrum and into the cancellous bone of the glenoid rim. Aligning the oblong head of the tack lengthwise along the glenoid rim provides a low profile that avoids articular impingement on the tack head.
    Type: Application
    Filed: April 17, 2007
    Publication date: December 13, 2007
    Inventors: R. Grafton, David Chao
  • Publication number: 20070225764
    Abstract: An insert-molded suture anchor has a biodegradable polymer body molded around a loop of suture. A tapered end disposed on the proximal end of the body is received into a recess in the distal end of a hand driver. Anchoring ribs are formed along the remaining length of the anchor. The suture is held securely within the anchor body during the insert molding process. The anchor is produced by placing the suture within an injection mold, and injecting biodegradable polymer into the mold. Using a preferred plication driver, the suture anchor can be utilized for capsular plication procedures.
    Type: Application
    Filed: June 1, 2007
    Publication date: September 27, 2007
    Inventors: William Benavitz, R. Grafton, Reinhold Schmieding
  • Publication number: 20070142836
    Abstract: A suture anchor has a continuous thread spiraling around a tapering central core. At the distal end, the suture anchor terminates in a rounded point. At the proximal end of the suture anchor is an eye for receiving suture. The suture anchor has a large thread surface per turn of thread. Anti-backout ridges can be formed on the front and/or back faces of the threads. A driver for the suture anchor is provided, the driver including a shaft having a central axis, a length, a distal end, and a proximal end. The shaft is provided at its distal end with an opening aligned with the central axis of the shaft, for receiving the hexagonal proximal end of the suture anchor. One or more sutures threaded through the suture eye are threaded through the hollow tubular shaft. The suture is pulled into and captured by V-shaped notches on the proximal end of the handle to hold the suture anchor in place on the distal end of the driver under the tension of the captured sutures.
    Type: Application
    Filed: February 16, 2007
    Publication date: June 21, 2007
    Inventors: Reinhold Schmieding, R. Grafton, Mark Brunsvold
  • Publication number: 20060259076
    Abstract: A chain of loops of braided high strength suture for surgical applications. The suture chain is advantageous for use in knotless fixation of soft tissue to bone, and can be used for knotless side-to-side suturing of U-shaped defects, such as rotator cuff tears.
    Type: Application
    Filed: March 30, 2006
    Publication date: November 16, 2006
    Inventors: Stephen Burkhart, R. Grafton
  • Publication number: 20060161159
    Abstract: A ribbed suture anchor formed of poly-ether ether ketone (PEEK). The suture anchor is radiolucent and revisable. A tapered end disposed on the proximal end of the body can be received into a recess in the distal end of a hand driver. Anchoring ribs are formed along the remaining length of the anchor. The suture is attached to the suture anchor body through an aperture in the anchor.
    Type: Application
    Filed: December 13, 2005
    Publication date: July 20, 2006
    Inventors: Peter Dreyfuss, William Benavitz, R. Grafton, Reinhold Schmieding
  • Publication number: 20060155329
    Abstract: A high strength abrasion resistant surgical suture material with improved tie down characteristics is color coded for visualization and identification purposes. The suture features a multifilament cover formed of strands of ultra high molecular weight long chain polyethylene braided with polyester, nylon or a bioabsorbable material. Selected nylon fibers in the cover are provided in a color contrasting with the other cover fibers to provide an identifiable trace. The cover surrounds a core formed of twisted strands of ultrahigh molecular weight polyethylene. The suture, provided in a #2 size, has the strength of #5 Ethibond, is ideally suited for most orthopedic procedures, and can be attached to a suture anchor or a curved needle.
    Type: Application
    Filed: March 8, 2006
    Publication date: July 13, 2006
    Inventors: R. Grafton, Reinhold Schmieding
  • Publication number: 20060004365
    Abstract: A corkscrew suture anchor has a continuous thread spiraling around a tapering central core. At the distal end, the suture anchor terminates in a rounded point. At the proximal end of the suture anchor is an eye for receiving suture. The suture anchor has a large thread surface per turn of thread. Anti-backout ridges can be formed on the front and/or back faces of the threads. A driver for the suture anchor is provided, the driver including a shaft having a central axis, a length, a distal end, and a proximal end. The shaft is provided at its distal end with an opening aligned with the central axis of the shaft, for receiving the hexagonal proximal end of the suture anchor. One or more sutures threaded through the suture eye are threaded through the hollow tubular shaft. The suture is pulled into and captured by V-shaped notches on the proximal end of the handle to hold the suture anchor in place on the distal end of the driver under the tension of the captured sutures.
    Type: Application
    Filed: July 11, 2005
    Publication date: January 5, 2006
    Inventors: Reinhold Schmieding, R. Grafton, Mark Brunsvold
  • Publication number: 20050283156
    Abstract: Knotless fixation of soft tissue to bone is accomplished using a bone anchor configured to provide interference fixation of a soft-tissue connector. The soft-tissue connector is provided in the form of a flat narrow piece of material. Additional fixation strength can be provided by configuring the bone anchor to penetrate into or through the soft-tissue connector. The bone anchor is installed into a pre-formed hole or socket in the bone.
    Type: Application
    Filed: June 20, 2005
    Publication date: December 22, 2005
    Inventors: Reinhold Schmieding, R. Grafton, Peter Dreyfuss, Stephen Burkhart
  • Publication number: 20050240225
    Abstract: A suture combined intraoperatively with autogenous blood components. At least one strand of suture is placed into a sterile container. Blood obtained from a patient is separated, using a centrifuge, for example, to retrieve certain healing components such as autogenous growth factors, to obtain an autogenous blood suspension. The autogenous blood suspension is added to the sterile container containing the strand of suture. The suture wicks up biologic components of the autogenous blood suspension to produce an enhanced suture. Surgical repairs using the enhanced suture are conducted by suturing a tear to itself or to bone, for example. Post-operatively, the biologic components leach from the suture to accelerate healing of the repair.
    Type: Application
    Filed: April 22, 2005
    Publication date: October 27, 2005
    Inventors: Reinhold Schmieding, R. Grafton
  • Publication number: 20050192631
    Abstract: A suture tape construct is made of braided high strength surgical suture material. A length of round braided suture extends along the entire length of the suture tape. A middle portion of the suture tape features a flat braid added to the round braided suture. The suture is incorporated centrally into the flat braid, providing a backbone to the construct. Transition sections at either end of the flat braid are tapered to allow the suture tape to pass easily through openings during surgical procedures. The suture tape is a braided construction of ultrahigh molecular weight polyethylene fiber blended with fibers of one or more long chain synthetic polymers, preferably polyester. The suture tape is indicated for high demand orthopedic repairs such as arthroscopic reconstruction for acromioclavicular joint separation, for example. The broad footprint of the suture tape is appropriate for repairs in degenerative cuff tissue where tissue pull-through may be a concern.
    Type: Application
    Filed: October 22, 2004
    Publication date: September 1, 2005
    Inventor: R. Grafton
  • Publication number: 20050055051
    Abstract: A high strength abrasion resistant surgical suture material with improved tie down characteristics and tissue compliance is color coded for visualization and identification purposes. The suture features a multifilament jacket formed of braided strands of ultra high molecular weight polyethylene and polyester, with silk fibers included in a color contrasting with the other jacket fibers to provide an identifiable trace. In one embodiment, the braided jacket surrounds a core formed of twisted strands of ultrahigh molecular weight polyethylene. The suture, provided in a No. 2 size, has the strength of No. 5 Ethibond, is ideally suited for most orthopedic procedures, and can be attached to a suture anchor or a curved needle. The identifiable silk trace preferably may be provided along one half of the length of the suture, so that when the suture is loaded onto a suture anchor, for example, the two legs of the length of suture on either side of the suture anchor can be readily distinguished.
    Type: Application
    Filed: October 22, 2004
    Publication date: March 10, 2005
    Inventor: R. Grafton
  • Publication number: 20050033362
    Abstract: A high strength abrasion resistant surgical suture material with improved tie down characteristics and enhanced tissue remodeling and biocompatibility includes protein polymer fibers blended with synthetic fibers. The suture features a multifilament cover formed of strands of ultra high molecular weight long chain polyethylene braided with polyester, nylon or other nonabsorbable materials, along with fibers of a protein polymer, such as collagen. The cover surrounds a core formed of twisted strands of ultrahigh molecular weight polyethylene. The core also can include collagen fibers. The suture, provided in a #2 size, has the strength of #5 Ethibond, is ideally suited for most orthopedic procedures, and can be attached to a suture anchor or a curved needle. The collagen fiber enhances tissue remodeling into the suture strand, thus improving biocompatibility.
    Type: Application
    Filed: August 6, 2004
    Publication date: February 10, 2005
    Inventor: R. Grafton
  • Publication number: 20040240385
    Abstract: Systems and methods for managing deployed trunk circuit capacity in a telecommunications network are disclosed. The usage of groups of trunk circuits in the network can be monitored to collect network traffic data. Analysis of the traffic data provides for computation of performance metrics and calculation of time-moving averages. The analyzed data is input into forecasting models to plan network capacity deployments to meet the expected demand. Network equipment and facilities are provisioned to meet the forecasted plan. Connection routing is adjusted to utilize the provisioned equipment and facilities.
    Type: Application
    Filed: April 15, 2004
    Publication date: December 2, 2004
    Inventors: Ronald L. Boggs, Dean W. Cox, Stephen T. Cox, Charles R. Grafton