Patents by Inventor C. Paul

C. Paul 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).

  • Walk-behind implement having wrap spring wheel clutches
    Publication number: 20020170797
    Abstract: A reversible implement including an engine, an axle driven by the engine, a pair of ground engaging wheels with a wheel located at each axle end, a pair of input hubs rotatably fixed to the axle, a pair of wheel hubs with a wheel hub located at each axle end and attached to a ground engaging wheel, and a wrap spring surrounding a portion of each input hub and each wheel hub. Each wrap spring has a relaxed state, wherein the wrap spring is in one of a first position in which the wrap spring is disengaged from the wheel hub, and the input and wheel hubs are not rotatively coupled and a second position in which the wrap spring is engaged with the wheel hub, and the input and wheel hubs are rotatively coupled, and a contracted state, wherein the wrap spring is in the other position.
    Type: Application
    Filed: April 2, 2002
    Publication date: November 21, 2002
    Inventor: C. Paul Cox
  • Implants formed with demineralized bone
    Publication number: 20020120338
    Abstract: Selectively partially and demineralized bone-derived implants, their methods of preparation and use are provided. In one embodiment, a cranial void filler preferably having a T-shape formed of an upper mineralized cortical bone section and at least a partially demineralized lower section adapted to fill a cranial void is disclosed. In another embodiment, a plate preferably having a dog-bone-shape having mineralized and at least partially demineralized sections is disclosed. In a further embodiment, a unitary cord having a first mineralized section with a plurality of slits to provide flexibility and a second at least partially demineralized section is described. Also disclosed is an implant for laminoplasty having at least a partially demineralized section and a mineralized section. A method of forming an implant of demineralized fibers also is disclosed.
    Type: Application
    Filed: August 13, 2001
    Publication date: August 29, 2002
    Inventors: Michael L. Boyer, David C. Paul, Christopher M. Angelucci
  • Method and system for laser marking a gemstone
    Publication number: 20020117486
    Abstract: A system for laser marking a gemstone (10) is provided. A pulsed laser (20) generates a laser pulse (40) which is then directed towards a focusing element (60) through optical means (30). Lens (60) focuses the laser pulse into focused pulse (70). The focused pulse (70) is projected onto a surface of gemstone (80) which is mounted in fixture (90). A computer control system (110) allows a user to input and control a predetermined path of displacement between the gemstone (80) and the focused laser pulse (70).
    Type: Application
    Filed: January 15, 2002
    Publication date: August 29, 2002
    Inventors: C. Paul Christensen, Sidney P. Wright
  • Demineralized bone-derived implants
    Publication number: 20020120346
    Abstract: Selectively demineralized bone-derived implants are provided. In one embodiment, a bone sheet for implantation includes a demineralized field surrounding mineralized regions. In another embodiment, a bone defect filler includes a demineralized cancellous bone section in a first geometry. The first geometry is compressible and dryable to a second geometry smaller than the first geometry, and the second geometry is expandable and rehydratable to a third geometry larger than the second geometry.
    Type: Application
    Filed: August 13, 2001
    Publication date: August 29, 2002
    Inventors: Michael L. Boyer, David C. Paul, Christopher M. Angelucci
  • Laminoplasty implants and methods of use
    Publication number: 20020120335
    Abstract: Implants for maintaining a distance between cut spinal bones are disclosed. The implants are made of metal, polymer or bone allograft having ends configured to conform to the cut bone ends. The implants have hollow regions for packing osteogenic material. The implant ends have surface projections to reduce slippage. Implants made of bone allograft also have spine contacting ends made of demineralized bone to speed fusion of spine and implant; they may also have bone flaps to fix the implant to the spine. Methods of using the implants are also disclosed.
    Type: Application
    Filed: August 29, 2001
    Publication date: August 29, 2002
    Inventors: Christopher M. Angelucci, Michael L. Boyer, David C. Paul, Christopher J. Ryan, Amit Sinha, Martin Walther
  • Demineralized bone implants
    Publication number: 20020120347
    Abstract: Selectively demineralized bone-derived implants are provided. In one embodiment, a bone sheet for implantation includes a demineralized field surrounding mineralized regions. In another embodiment, a bone defect filler includes a demineralized cancellous bone section in a first geometry. The first geometry is compressible and dryable to a second geometry smaller than the first geometry, and the second geometry is expandable and rehydratable to a third geometry larger than the second geometry.
    Type: Application
    Filed: August 13, 2001
    Publication date: August 29, 2002
    Inventors: Michael L. Boyer II, David C. Paul, Christopher M. Angelucci
  • End member for a bone fusion implant
    Publication number: 20020099443
    Abstract: An end member for use with a bone fusion implant is disclosed. The end member has a first portion, a second portion, and a shoulder connecting the two portions. The second portion is sized to fit within the interior of the bone fusion implant in such a fashion that the shoulder rests on the edge of the implant. The top surface of the first portion has at least one slot to receive a surgical instrument such as an inserter and/or distractor to facilitate implantation of the end member and bone fusion implant. The top surface may also have teeth to provide initial mechanical stability between the bone and end plate and promote bone fusion.
    Type: Application
    Filed: March 26, 2002
    Publication date: July 25, 2002
    Applicant: Synthes (USA)
    Inventors: Dominique D. Messerli, David C. Paul
  • Intervertebral allograft spacer
    Publication number: 20020062153
    Abstract: An allogenic intervertebral implant for fusing vertebrae is disclosed. The implant is a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra. The implant has a wedge-shaped profile to restore disc height and the natural curvature of the spine. The top and bottom surfaces of the implant have a plurality of teeth to resist expulsion and provide initial stability. The implant according to the present invention provides initial stability need for fusion without stress shielding.
    Type: Application
    Filed: July 6, 2001
    Publication date: May 23, 2002
    Inventors: David C. Paul, Hansjuerg W. Emch, Beat Schenk, Joseph A. Yaccarino
  • Bone implants with central chambers
    Publication number: 20020029084
    Abstract: The present invention relates to an implant comprising two or more bone fragments that are combined to form a single unit. Cancellous bone or cortical bone is removed from a source and fashioned into bone components with desirable shapes and sizes. The bone components may be integrated to form implants for implantation in the body. Bone stock may be formed by combining sections of various bones of the body, and the bone stock may be further fashioned for use as implants with particular geometries.
    Type: Application
    Filed: March 22, 2001
    Publication date: March 7, 2002
    Inventors: David C. Paul, Hansjuerg W. Emch, Beat Schenk, Michael L. Boyer, Thomas B. Higgins
  • Skeletal reconstruction cages
    Publication number: 20010056302
    Abstract: The present invention relates to skeletal reconstruction cages and a method of providing variable fit for a skeletal reconstruction cage. The skeletal reconstruction cages include a central body having first and second ends, a first end cap coupled to one end of the central body, and a second end cap coupled to the other end of the central body. At least two of the central body, first end cap, and second end cap are formed from bone. Each of the central body, first end cap, and second end cap may be provided in different sizes so that cages with varying overall heights, and related angulations, may be created.
    Type: Application
    Filed: March 22, 2001
    Publication date: December 27, 2001
    Inventors: Michael L. Boyer, David C. Paul, Thomas B. Higgins, Christopher M. Angelucci
  • Intervertebral allograft spacer
    Publication number: 20010049560
    Abstract: An allogenic intervertebral implant for fusing vertebrae is disclosed. The implant is a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra. The implant has a wedge-shaped profile to restore disc height and the natural curvature of the spine. The top and bottom surfaces of the implant have a plurality of teeth to resist expulsion and provide initial stability. The implant according to the present invention provides initial stability need for fusion without stress shielding.
    Type: Application
    Filed: April 9, 2001
    Publication date: December 6, 2001
    Inventors: David C. Paul, Hansjuerg Emch, Beat Schenk
  • Multipiece implants formed of bone material
    Publication number: 20010041941
    Abstract: The present invention relates to an implant comprising two or more bone fragments that are combined to form a single unit. Cancellous bone or cortical bone is removed from a source and fashioned into bone components with desirable shapes and sizes. The bone components may be integrated to form implants for implantation in the body. Bone stock may be formed by combining sections of various bones of the body, and the bone stock may be further fashioned for use as implants with particular geometries.
    Type: Application
    Filed: March 22, 2001
    Publication date: November 15, 2001
    Inventors: Michael L. Boyer, David C. Paul, Thomas B. Higgins
  • Implants formed of coupled bone
    Publication number: 20010039458
    Abstract: The present invention relates to an implant comprising two or more bone fragments that are combined to form a single unit. Cancellous bone or cortical bone is removed from a source and fashioned into bone components with desirable shapes and sizes. The bone components may be integrated to form implants for implantation in the body. Bone stock may be formed by combining sections of various bones of the body, and the bone stock may be further fashioned for use as implants with particular geometries.
    Type: Application
    Filed: March 22, 2001
    Publication date: November 8, 2001
    Inventors: Michael L. Boyer, David C. Paul, Thomas B. Higgins
  • Tissue forms
    Publication number: 20010039456
    Abstract: The present invention relates to an implant comprising two or more bone fragments that are combined to form a single unit. Cancellous bone or cortical bone is removed from a source and fashioned into bone components with desirable shapes and sizes. The bone components may be integrated to form implants for implantation in the body. Bone stock may be formed by combining sections of various bones of the body, and the bone stock may be further fashioned for use as implants with particular geometries.
    Type: Application
    Filed: March 22, 2001
    Publication date: November 8, 2001
    Inventors: Michael L. Boyer, David C. Paul, Thomas B. Higgins
  • Plugs for filling bony defects
    Publication number: 20010039457
    Abstract: The present invention relates to plugs for filling vacancies in bone tissue. The plugs include a body and at least one end cap that are coupled together and may be formed from bone. The body of the plug may be a sleeve, and the plug may further include an insert configured and dimensioned to be received in the sleeve.
    Type: Application
    Filed: March 22, 2001
    Publication date: November 8, 2001
    Inventors: Michael L. Boyer, David C. Paul, Thomas B. Higgins, Christopher M. Angelucci, Dominique D. Messerli, Kenneth I. Kobayashi
  • Spinal disc space distractor
    Publication number: 20010031969
    Abstract: A distractor for separating adjacent elements, such as vertebrae. The distractor preferably has a scissors-type distracting mechanism, either in a simple scissors or double-acting scissors configuration. The distractor includes blades that are removable from the jaws of the distractor such that different blades may be used depending on the patient and situation with which the distractor is to be used. The jaws include a mating fixture and the blades include a mating portion for removable association with the mating fixture.
    Type: Application
    Filed: June 14, 2001
    Publication date: October 18, 2001
    Applicant: Synthes U.S.A.
    Inventors: Max Aebi, Thomas Steffen, David C. Paul, William A. Cottle, Beat Schenk
  • Spinal disc space distractor
    Publication number: 20010029377
    Abstract: A distractor for separating adjacent elements, such as vertebrae. The distractor preferably has a scissors-type distracting mechanism, either in a simple scissors or double-acting scissors configuration. A set of blades is provided on each jaw such that an implant may be inserted between the spaced apart blades. The set of blades includes at least two blades.
    Type: Application
    Filed: June 14, 2001
    Publication date: October 11, 2001
    Applicant: Synthes U.S.A.
    Inventors: Max Aebi, Thomas Steffen, David C. Paul, William A. Cottle, Beat Schenk
  • Spinal disc space distractor
    Patent number: 6261296
    Abstract: A distractor for separating adjacent elements, such as vertebrae. The distractor preferably has a scissors-type distracting mechanism, either in a simple scissors or double-acting scissors configuration. Additionally, one or more of the blades, distracting mechanism, and handles are offset with respect to the other to facilitate visualization and to increase the space available for an implant holder. The blades are configured to enhance versatility of the distractor. In a first embodiment, the blades are removable from the jaws of the distractor such that different blades may be used depending on the patient and situation with which the distractor is to be used. In a second embodiment, curved portions are provided between the blades and jaws such that the blades are offset from the jaws in a smooth transition which does not expose sharp edges to internal organs or vasculature of the patient.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: July 17, 2001
    Assignee: Synthes U.S.A.
    Inventors: Max Aebi, Thomas Steffen, David C. Paul, William A. Cottle, Beat Schenk
  • Intervertebral allograft spacer
    Patent number: 6258125
    Abstract: An allogenic intervertebral implant for fusing vertebrae is disclosed. The implant is a piece of allogenic bone conforming in size and shape with a portion of an end plate of a vertebra. The implant has a wedge-shaped profile to restore disc height and the natural curvature of the spine. The top and bottom surfaces of the implant have a plurality of teeth to resist expulsion and provide initial stability. The implant according to the present invention provides initial stability need for fusion without stress shielding.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: July 10, 2001
    Assignee: Synthes (U.S.A.)
    Inventors: David C. Paul, Hansjuerg W. Emch, Beat Schenk
  • Pharmaceutical composition
    Patent number: 6255284
    Abstract: Polypeptide pharmaceutical compositions having improved stability and resistance to aggregation, particle formation and precipitation comprising a polypeptide pharmaceutical and poloxamer surfactants alone, or in combination with polysorbate surfactants. Preferred polypeptides stabilized are bactericidal/permeability increasing (BPI) protein, biologically active fragments of BPI, biologically active analogs of BPI, and biologically active variants of BPI.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 3, 2001
    Assignee: Xoma Corporation
    Inventors: Weldon Courtney McGregor, James Stubstad, C. Paul Chang