Patents by Inventor David L. Evans
David L. Evans 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).
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Publication number: 20120116562Abstract: Patient-matched surgical instruments, and methods for making patient-matched surgical instruments, may include patient-matched surgical instruments having an anatomy facing side with several discrete, physically separate anatomy contacting portions configured to match the anatomy of a particular patient. The anatomy contacting portions may be one or more of non-uniform in distribution, non-uniform in shape or non-uniform in surface area.Type: ApplicationFiled: June 10, 2011Publication date: May 10, 2012Applicant: Smith & Nephew, Inc.Inventors: Aashiish Agnihotri, Patrick Brian Conway, David L. Evans, Luke Andrew Gibson, Jennifer Allyn Griffin, Michael Dean Hughes, David Timothy Mehl, Abraham Biglari Salehi, Jeffrey Andrew Sharp, Maroun Hanna Tarsha, Andrew Justin Wald, Thomas S. Wolfe
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Publication number: 20110230883Abstract: A length-adjustable IM nail system includes a telescoping IM nail with proximal and distal bodies. An inner magnet within the proximal body is connected to a threaded rod which, in turn, is connected to the distal body. The threaded rod passes through a threaded block which is connected to the proximal body. The position of the distal end of the threaded rod is fixed with respect to the distal body, but may rotate freely within this fixed position. An actuator is also disclosed that includes a pair of rotating magnets disposed in an angular relationship with each other and the axis of the IM nail and the patient's limb. Rotation of these outer magnets in the same direction results in rotation of the inner magnet and threaded rod and a telescoping axial movement of the threaded block and proximal body with respect to the distal body.Type: ApplicationFiled: May 17, 2011Publication date: September 22, 2011Applicant: Smith & Nephew, Inc.Inventors: Daniel C. Zahrly, David L. Evans, Sied W. Janna
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Publication number: 20100318085Abstract: The present disclosure relates to an internal fixation device including an interface portion, a polymer material coupled to the interface portion, wherein the polymer material includes at least one feature on a surface of the polymer material, and means for allowing adequate expansion of the polymer material on each side of the bone fracture site. A method of fixating the internal fixation device to a bone and other internal fixation devices and methods for fixating are also disclosed.Type: ApplicationFiled: March 13, 2008Publication date: December 16, 2010Applicant: SMITH & NEPHEW, INC.Inventors: Gene Edward Austin, Mason James Bettenga, David L. Evans, David L. Brumfield, Henry B. Faber, David F. Farrar, Michael Andrew Hall, Horacio Montes De Oca Balderas, James K. Rains, John Rose, Malcolm Brown
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Publication number: 20080249580Abstract: An instrument for reduction of a bone fracture is disclosed. The instrument includes an orthopaedic surgical implant (112), an implant member (190, 200, 270), and a driving member (180, 210, 260). The implant member (190, 200, 270) has a bone engagement portion (195, 203, 275) and a driven portion (197, 208, 278). The driving member (180, 210, 260) cooperates with the driven portion (197, 208, 278) to move the implant member (190, 200, 270) and reduce the fracture. Also disclosed is a sliding compression orthopaedic implant (300). The implant (300) comprises a first implant member (310), said first implant member (310) having a transverse hole (311); and a second implant member (312) connected to said transverse hole (311), said second implant member (312) having a shank (314), and said shank (314) having a bone engagement portion (316) at a first end portion (318) and a sliding compression member (320) at a second end portion (322).Type: ApplicationFiled: September 28, 2006Publication date: October 9, 2008Applicant: SMITH & NEPHEW, INC.Inventors: David L. Evans, Gene Edward Austin, Nathaniel Kelley Grusin, Sied W. Janna, James K. Rains, Mark S. Gosney, Nicholas S. Ritchey, Henry B. Faber, Kamrin R. Landrem
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Patent number: 7352550Abstract: Systems, methods, and apparatus for fault detection and interruption in power lines are provided. Circuitry is implemented via software and hardware that is configured to sense an operational aspect of a power line, such as current levels in a three-phase power line, and apply signal processing to the sensed operational aspect to detect faults including different types of faults such as transient and steady state faults and can also be configured to identify the type of fault. Information on the fault and the identification of the type of fault can be displayed, stored, or some other output operation can be implemented. Circuitry can be implemented to provide digital signal processing and analog signal processing to, for example, independently and in parallel (e.g., redundant operation) detect faults and respond to faults as they occur (i.e., in real time).Type: GrantFiled: February 1, 2005Date of Patent: April 1, 2008Assignee: TDG Aerospace, Inc.Inventors: John E. Mladenik, David L. Evans, Jose M. Barba, Daniel E. Fish, Gerald Bench, Andrew Wagner
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Patent number: 7342763Abstract: Systems, methods, and apparatus for fault detection and interruption in power lines are provided. Circuitry is implemented via software and hardware that is configured to sense an operational aspect of a power line, such as current levels in a three-phase power line, and apply signal processing to the sensed operational aspect to detect faults including different types of faults such as transient and steady state faults and can also be configured to identify the type of fault. Information on the fault and the identification of the type of fault can be displayed, stored, or some other output operation can be implemented. Circuitry can be implemented to provide digital signal processing and analog signal processing to, for example, independently and in parallel (e.g., redundant operation) detect faults and respond to faults as they occur (i.e., in real time).Type: GrantFiled: January 31, 2005Date of Patent: March 11, 2008Assignee: TDG Aerospace, Inc.Inventors: John E. Mladenik, David L. Evans, Jose M. Barba, Daniel E. Fish, Gerald Bench, Andrew Wagner
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Patent number: 7254004Abstract: Systems, methods, and apparatus for fault detection and interruption in power lines are provided. Circuitry is implemented via software and hardware that is configured to sense an operational aspect of a power line and apply signal processing to the sensed operational aspect to detect faults including different types of faults such as transient and steady state faults and can also be configured to identify the type of fault. Information on the fault and the identification of the type of fault can be displayed, stored, or some other output operation can be implemented. Circuitry can be implemented to provide digital signal processing and analog signal processing to, for example, independently and in parallel (e.g., redundant operation) detect faults and respond to faults as they occur (i.e., in real time). The types of faults can include transient type faults that can include ground, arc, line-to-line, and imbalance type faults and can also include steady state type faults (e.g.Type: GrantFiled: June 12, 2004Date of Patent: August 7, 2007Assignee: TDG Aerospace, Inc.Inventors: John E Mladenik, David L Evans, Jose M Barba, Wayne L Larson, Daniel E. Fish, Gerald Bench
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Patent number: 7182784Abstract: Orthopedic implants which include the components of zirconium or zirconium-based alloys having surfaces coated with oxidized zirconium or alternatively, other orthopedic implants comprising abrasion resistant surfaces contacting surfaces of cross-linked polyethylene are disclosed. Such implants provide low friction, highly wear resistant coatings especially useful in artificial joints, such as hip joints, knee joints, elbows, etc., but also useful in other implant devices as well. The implants also find use as vertebral disc prostheses.Type: GrantFiled: September 18, 2003Date of Patent: February 27, 2007Assignee: Smith & Nephew, Inc.Inventors: David L. Evans, Gordon Hunter, Shilesh C. Jani, Robert E. Brosnahan, III
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Publication number: 20040111160Abstract: Orthopedic implants which include the components of zirconium or zirconium-based alloys having surfaces coated with oxidized zirconium or alternatively, other orthopedic implants comprising abrasion resistant surfaces contacting surfaces of cross-linked polyethylene are disclosed. Such implants provide low friction, highly wear resistant coatings especially useful in artificial joints, such as hip joints, knee joints, elbows, etc., but also useful in other implant devices as well. The implants also find use as vertebral disc prostheses.Type: ApplicationFiled: September 18, 2003Publication date: June 10, 2004Inventors: David L. Evans, Gordon Hunter, Shilesh C. Jani, Robert E. Brosnahan
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Patent number: 6162223Abstract: A joint fixator apparatus conforms to the natural axis of rotation of the joint in question, such as a patient's wrist or knee to avoid the possibility of bone fragment displacement and/or fracture reduction. The apparatus includes two fixation rod sections or shaft sections with a spring module therebetween. The spring module is in the form of a flexible coupler that connects to respective ends of the external fixator rod. The module can include a removable clip to restrain the motion of the spring a desired amount such as before healing takes place. The rods can be used to hold pin clamps which then hold bone pins for attachment to selected bones of the patient such as above and below a joint or above and below a fracture. The pin clamps can be moved along the rod sections to provide distraction of the joints for a ligamentotaxis effect in reducing the fracture.Type: GrantFiled: April 9, 1999Date of Patent: December 19, 2000Assignee: Smith & Nephew, Inc.Inventors: James E. Orsak, David L. Evans
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Patent number: 5881119Abstract: An apparatus for handling nuclear fuel rods, which include a mixed oxide fuel material, and for constructing fuel assemblies from the fuel rods, includes a store (9) constructed from radiation shielding material. The store includes a number of channels (10), each of which is adapted to receive a magazine (2) containing fuel rods. Removal and insertion of magazines from and into the channels is effected by a handling machine (29) which is remotely and automatically operated. Each of the channels is closed by a plug (11) which can be removed and inserted by the handling machine. The handling machine is able to remove a magazine from a selected channel and to deliver the magazine to either of two fuel assembly lines (16, 21). Each assembly line constructs a different type of fuel assembly from that of the other assembly line, and each assembly line is arranged in a separate shielded enclosure (15, 24).Type: GrantFiled: March 6, 1998Date of Patent: March 9, 1999Assignee: British Nuclear Fuels plcInventors: David L. Evans, Terrence Wilcock, Alan Blackwell
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Patent number: 5879405Abstract: An improved acetabular cup prosthesis has a cup body with inner convex and outer concave surfaces. The cup body has an apex and a base that defines a plane. The cup body outer convex surface has a curved annular portion between the base and the transition. In one embodiment, the outer convex surface is a curved annular surface extending in between the rim and a distance about two fifths to three fifths (2/5-3/5) of the distance between the rim and the apex. In another embodiment, a plurality of cup bodies are provided in a range of sizes between about 40 mm and 80 mm. Each cup body has a companion rotary reamer that is correspondingly shaped. The companion cup body is oversized between about 1 mm and 3 mm so that a generally constant change in volume is provided for all cup sizes between 40 mm and 80 mm.Type: GrantFiled: May 23, 1997Date of Patent: March 9, 1999Assignee: Smith & Nephew, Inc.Inventors: Michael D. Ries, Brian Austin, David L. Evans, Steve Miller, Jeff Shea
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Patent number: 5782928Abstract: An improved acetabular cup prosthesis has a cup body with inner convex and outer concave surfaces. The cup body has an apex and a base that defines a plane. The cup body outer convex surface has a toroidally shaped portion between the base and the transition. In one embodiment, the outer convex surface is toroidally shaped between the rim and a distance about one third of the distance of the rim to the apex. In another embodiment, a plurality of cup bodies are provided in a range of sizes between about 40 mm and 80 mm. Each cup body has a companion rotary reamer that is correspondingly shaped. The companion cup body is oversized between about 1 mm and 3 mm so that a generally constant change in volume is provided for all cup sizes between 40 mm and 80 mm.Type: GrantFiled: October 23, 1996Date of Patent: July 21, 1998Assignee: Smith & Nephew, Inc.Inventors: Michael D. Ries, Brian Austin, David L. Evans, Steve Miller, Jeff Shea
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Patent number: 5699820Abstract: A portable outdoor sleeping system is provided which includes a shelter portion, a detachable ground cover sheet, and one or more detachable sleeping bags. Each sleeping bag includes an elongate perimeter flap to which a fastener element is fixed for use in detachable securement of the sleeping bag to a fastener element of a corresponding sleeping bag outline flap. The sleeping bag outline flap defines a predetermined sleeping bag placement position such that other portions of the ground cover sheet may be reserved for a different use. The system also includes an inflatable cushion which has a projecting strip for use in securing the cushion to the floor.Type: GrantFiled: March 11, 1996Date of Patent: December 23, 1997Inventors: David L. Evans, Dena K. Evans
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Patent number: 5676704Abstract: An improved acetabular cup prosthesis has a cup body with correspondingly shaped outer convex and inner concave surfaces. The cup body has an apex and a base that defines a plane. The cup body outer convex surface has first and second curved, shaped portions positioned in between the base and the apex. In one embodiment, the outer convex surface has specially shaped portion in between the rim and a distance about one third of the distance of the rim to the apex. This specially shaded portion forms an interference fit with a patient's acetabular socket.Type: GrantFiled: November 27, 1995Date of Patent: October 14, 1997Assignee: Smith & Nephew, Inc.Inventors: Michael D. Ries, Brian Austin, David L. Evans, Steve Miller, Jeff Shea
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Patent number: 5609641Abstract: A tibial prosthesis includes a tibial tray and a post extending therefrom for receiving one or more modular stems of differing sizes. The stem provides a closed socket that registers with the post. A wedge lock fit tightens the stem to the post upon assembly. The stem has a cylindrical section and a tapering section. Fins extend longitudinally from the proximal end to the distal end of the stem, tracking both the cylindrical and tapering portion thereof so that each of the fins tracks a uniform diameter section of the stem for a majority of its length. The tapering section of the stem is equal to about one third of its over all length, and defines the distal end of the stem. The fins are longitudinally placed about the stem exterior surface, and are generally parallel. Between the fins are U-shaped channels that are similarly longitudinally extending and generally parallel. The stem provides a central longitudinal axis. The fins and channels are parallel to the central longitudinal axis of the stem.Type: GrantFiled: January 31, 1995Date of Patent: March 11, 1997Assignee: Smith & Nephew Richards Inc.Inventors: Chris E. Johnson, Thomas A. Carls, David L. Evans
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Patent number: 5598524Abstract: A method and apparatus for allowing selecting within a window on a computer system display within a first application program and moving that item to a second position on a display controlled by a file system manager. A file is created by the file system manager which is representative of the discrete data item selected and dragged. A representation of the data is provided on the computer system display, such as an icon specified by the application program from which the data originated and identifying file name.Type: GrantFiled: March 3, 1993Date of Patent: January 28, 1997Assignee: Apple Computer, Inc.Inventors: Robert G. Johnston, Jr., Mark L. Stern, David L. Evans
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Patent number: 5358532Abstract: A prosthetic joint acetabular cup component is provided that can be press fit into a patient's acetabulum, to create an interference fit and to eliminate the need for cement. A body portion of the cup provides an outer convex surface, The inside of the cup provides an inner concave surface. An apex portion of the cup or shell is spaced from the lower rim portion, the lower rim defining a plane. A plurality of annular rings are spaced along the body outer surface beginning at the lower rim and extending at least a partial distance toward the apex. Each of the annular rings is preferably generally parallel to the plane of the lower rim.Type: GrantFiled: June 16, 1992Date of Patent: October 25, 1994Assignee: Smith & Nephew Richards Inc.Inventors: David L. Evans, Peter E. Stegemann, Robert-Jan Enzerink
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Patent number: 5312411Abstract: A surgical instrument for shaping the distal femur of a patient to receive a unicondylar prosthetic component includes a cutting guide body that carries a pair of cylindrically shaped openings in the guide body, each of the openings having a central longitudinal axis and the respective axes of the openings forming an acute angle. An annular bushing is removably received in a selected one of the cylindrical openings during a cutting of the distal femur. A bone cutting reamer registers with a central cylindrical opening in the bushing. The bone cutting reamer has an annular shoulder that abuts the top of the bushing to define the depth of cut. During use, the surgeon positions the cutting guide body over a diseased condyle of the patient's distal femur. The surgeon then sequentially places the bushing and its associated bone cutting reamer into one of the selected openings of the cutting guide body.Type: GrantFiled: October 27, 1992Date of Patent: May 17, 1994Assignee: Smith & Nephew Richards, Inc.Inventors: John K. Steele, Thomas A. Carls, David L. Evans, Carol D. Taylor, Philippe Cartier, James Andrews, William Kennedy
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Patent number: 5203807Abstract: A knee replacement prosthesis includes a tibial component and a femoral component with improved articular surface geometries. The improved geometries allow substantial internal rotation of the tibial component with respect to the femoral component during at least the first twenty degrees (20.degree.) of flexion. The tibial and femoral components are capable of flexing about an axis that reaches an inclination of from about ten degrees (10.degree.) to about fifty degrees (50.degree.) to the horizontal.Type: GrantFiled: July 10, 1991Date of Patent: April 20, 1993Assignee: Smith & Nephew Richards Inc.Inventors: David L. Evans, Mark S. Gosney