With Magnet Patents (Class 623/18.12)
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Patent number: 11974929Abstract: A dynamic reversible electromagnetic locking element for locking the shoulder joint of a patient, in particular, in the form of a shoulder orthosis or a shoulder prosthesis, and methods for implementing the same. The dynamic reversible electromagnetic locking element has a ball and socket configuration to assist in operation of a glenohumeral joint (GHJ) in the patient.Type: GrantFiled: May 22, 2023Date of Patent: May 7, 2024Assignee: UNITED ARAB EMIRATES UNIVERSITYInventors: Alya A. Arabi, Bassem T. Elhassan
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Patent number: 11723775Abstract: A medical implant for a human shoulder joint includes a first magnetic implant fixed to the non-articular surface of the greater tuberosity of the human shoulder joint, and a second magnetic implant fixed to an outer surface and underside of the acromion of the human shoulder joint. At least one of the first and second magnetic implants generates a magnetic field that urges the first and second magnetic implants away from each other and thereby distracts the humeral head of the human shoulder joint from the acromion.Type: GrantFiled: August 12, 2020Date of Patent: August 15, 2023Inventor: Asheesh Bedi
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Patent number: 11617653Abstract: The present invention is directed generally to (1) an articulating junction, and articulation method thereof, wherein articulation is facilitated by a plurality of magnetic particles; (2) an articulating junction, and articulation method thereof, wherein the stability and fluidity of the junction is based, at least in part, on the magnetic field(s) of the plurality of magnetic particles; and (3) reducing the resistance to articulation and/or increasing the structural integrity and support, of the articulating junction, via electro-magnetism. Further, the present invention is directed generally to the synergistic combination of magnetic particles and preferred bio-implant-materials and additive-manufacturing methods along with Baker correlation codes. Further, the present invention is directed to an artificial joint for implantation into a living body and methods for constructing such an artificial joint.Type: GrantFiled: November 7, 2019Date of Patent: April 4, 2023Inventor: Stephen Bramblett Johnson
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Patent number: 11596803Abstract: Certain aspects relate to systems and techniques for an orthopedic treatment system. In one aspect, the system includes a body unit configured to attach to an orthopedic bone plate, an electromagnetic field emitter positioned within the body unit, the electromagnetic field emitter configured to project an electromagnetic field at a therapeutic frequency for a therapeutic duration. The system may further include an internal power source positioned within the body unit, the internal power source configured to provide electrical current to the electromagnetic field emitter. The system may also include a receiving coil positioned within the body unit, the receiving coil configured to receive power from an external power source, the external power source positioned outside the body unit.Type: GrantFiled: August 1, 2019Date of Patent: March 7, 2023Inventor: Richard Rogachefsky
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Patent number: 11529193Abstract: A system comprising: one or more field generating coils configured to generate a magnetic field; a sensor comprising a shell that contains a ferrofluid, the sensor configured to be introduced in proximity to the magnetic field, wherein the ferrofluid causes distortion of the magnetic field when the ferrofluid is in proximity to the magnetic field; and one or more field measuring coils configured to: measure a characteristic of the magnetic field when the ferrofluid is in proximity to the magnetic field; and provide, to a computing device, a signal representative of the measured characteristic of the magnetic field, wherein the computing device is configured to determine one or both of a position and an orientation of the sensor based on the measured characteristic of the magnetic field.Type: GrantFiled: July 27, 2018Date of Patent: December 20, 2022Assignee: Northern Digital Inc.Inventor: Nikolai Mikuszeit
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Patent number: 11517352Abstract: A magnetic screw device that includes a fastening stem, a housing, a magnet assembly, and one or more magnets. The housing is configured to receive the fastening stem, such that the housing can rotate and angulate relative to the fastening stem. The housing is also configured to secure the magnet assembly. The magnet assembly contains two magnet holders that are each configured to receive one of the two magnets. The magnetic screw device can be used in a method of treating a spine with an abnormal curvature.Type: GrantFiled: June 22, 2021Date of Patent: December 6, 2022Assignee: Gomboc, LLCInventors: Stephen D. Cook, Liam P. Nolan, Laura P. Patron
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Patent number: 11484364Abstract: A system comprising: one or more field generating coils configured to generate a magnetic field; a sensor comprising a shell that contains a ferrofluid, the sensor configured to be introduced in proximity to the magnetic field, wherein the ferrofluid causes distortion of the magnetic field when the ferrofluid is in proximity to the magnetic field; and one or more field measuring coils configured to: measure a characteristic of the magnetic field when the ferrofluid is in proximity to the magnetic field; and provide, to a computing device, a signal representative of the measured characteristic of the magnetic field, wherein the computing device is configured to determine one or both of a position and an orientation of the sensor based on the measured characteristic of the magnetic field.Type: GrantFiled: July 27, 2018Date of Patent: November 1, 2022Assignee: Northern Digital Inc.Inventor: Nikolai Mikuszeit
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Patent number: 11464618Abstract: An implantable distraction device includes a tubular member oriented along a longitudinal axis, and curved first and second attachment members coupled to the tubular member and configured to be sutured within a body lumen. The second attachment member is spaced apart from the first attachment member along the tubular member. The device further includes at least one magnet coupled to the tubular member and movable relative to the tubular member. At least one of the first attachment member or the second attachment member is axially movable relative to the other to vary an axial distance between the first and second attachment members. The at least one magnet is configured such that motion of a magnetic field relative to the distraction device causes corresponding motion of the at least one magnet, and corresponding motion of one attachment member relative to the other.Type: GrantFiled: August 7, 2018Date of Patent: October 11, 2022Assignee: Providence Health & Services—OregonInventors: Walaa F. Abdelmoaty, Lee L. Swanstrom, Christy M. Dunst, Frédéric Mouret, David Baas
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Patent number: 11331241Abstract: A joint actuator assembly includes a motor, a rotating driving member driven by the motor for driving a driven component, and a transmission assembly located between the motor and the rotating driving member that provides speed reduction from the motor to the rotating driving member. The rotating driving member comprises a magnetic coupling including a plurality of magnetic elements that are configured to magnetically couple with an opposing magnetic coupling of the driven component. The actuator and driven component may be combined into a mobility device including a magnetic coupling system having a first magnetic coupling on the actuator that magnetically couples to a second magnetic coupling on the driven component. The magnetic coupling system includes plurality of magnetic elements located as part of one or both of the first and second magnetic couplings. The first and second couplings have opposing mating surfaces that join together in a coupled position.Type: GrantFiled: January 17, 2018Date of Patent: May 17, 2022Assignee: Parker-Hannifin CorporationInventors: Ryan Farris, Steven Etheridge, Scott Morrison
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Patent number: 10874518Abstract: Prosthetic implant devices and related methods are provided. The prosthetic implant devices include an internal component and an external component. The internal component has an implant portion associated with one or more rare earth magnets. The internal component being of a size and shape suitable for surgical implantation into the residual limb of the amputee. The one or more rare earth magnets generate at least one magnetic field. The external component having a prosthetic piston associated with a plurality of magnetic elements and a prosthetic cup associated with a magnetic array. The magnet elements of the prosthetic piston being in adaptable magnetic association with the at least one magnetic field generated by the one or more rare earth magnets.Type: GrantFiled: September 18, 2017Date of Patent: December 29, 2020Assignee: Fellowship of Orthopaedic Researchers, Inc.Inventors: Stephen D. Cook, Laura P. Patron, Michael C. Harrison, Liam P. Nolan
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Patent number: 10779892Abstract: A system comprising: a sensor configured to be introduced into a clearance hole of a surgical implant, wherein the sensor is configured to be introduced in proximity to a generated magnetic field and cause distortion of the magnetic field; and one or more field measuring coils configured to: measure a characteristic of the magnetic field when the sensor is in proximity to the magnetic field; and provide, to a computing device, a signal representative of the measured characteristic of the magnetic field, wherein the computing device is configured to determine one or both of a position and an orientation of the sensor and the clearance hole based on the measured characteristic of the magnetic field.Type: GrantFiled: July 27, 2018Date of Patent: September 22, 2020Assignee: Northern Digital Inc.Inventors: Nikolai Mikuszeit, Christian Schilling, Olaf Zerres, Georg Brunner, Stefan R. Kirsch, Westley D. Ashe, Mark Robert Schneider, Vladimir F. Kogan
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Patent number: 10780290Abstract: Encased magnetic bone growth stimulating devices and methods of use are provided herein. An example device includes a magnet and a biocompatible means for enclosing the magnet. The biocompatible means for enclosing the magnet further comprises a means for releasably coupling with the medical implant and a means for coupling the enclosing means to an implantable medical device.Type: GrantFiled: October 31, 2017Date of Patent: September 22, 2020Inventors: Robert A Compton, Nicholas Michael Cordaro, Robert Alex Hirschl
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Patent number: 10702320Abstract: A bone screw configured to be screwed into a bone having: an exterior casing; a head having a head interior surface; a tip configured to be driven into the bone; a shaft extending between the head and the tip, the shaft having exterior threads; a magnet; an interior cavity within the bone screw configured to house the magnet; a cap having: a top end having a recess configured to receive a means for driving the bone screw into the bone; and a bottom end having cap threads; the head being configured to receive the cap by having interior threads on the head interior surface; wherein an association of the cap threads with the interior threads causes the cap to be sealed to the head, and thus causes the magnet to be encased within the bone screw with no portion of the magnet exposed outside of the exterior casing.Type: GrantFiled: January 4, 2018Date of Patent: July 7, 2020Inventor: Christopher A. Archbold
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Patent number: 10675152Abstract: Methods of reducing loading across a cartilaginous joint, or of reducing pain in a cartilaginous joint caused by cartilage damage in the joint. The methods involve implanting one or more magnetic devices in the bones, or affixing one or more magnetic devices onto the surface of the bones, that form the joint. For example, to reduce loading or reduce pain in a knee joint, one or more magnetic devices maybe implanted in the femur and in the tibia. The magnetic devices are oriented to generate a repulsive magnetic force between the one or more magnetic devices of each of the bones forming the joint.Type: GrantFiled: June 11, 2018Date of Patent: June 9, 2020Assignee: Fellowship of Orthopaedic Researchers, Inc.Inventors: Stephen D. Cook, Samantha L. Salkeld, Laura P. Patron, Liam P. Nolan, Michael C. Harrison
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Patent number: 10660674Abstract: A device for treatment of the spine comprising one or more vertebral attachments, in which the vertebral attachments contain one or more magnets that provide physiologic attractive or repulsive forces to affect the interaction between adjacent vertebrae. The vertebral attachments may also comprise one or more connecting components that affix the magnets to the vertebrae. In addition, there are methods for treatment of the spine comprising implantation of the device.Type: GrantFiled: July 17, 2013Date of Patent: May 26, 2020Assignee: Gomboc, LLCInventors: Stephen D. Cook, Samantha L. Salkeld
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Patent number: 10507111Abstract: The present invention is directed generally to (1) an articulating junction, and articulation method thereof, wherein articulation is facilitated by a plurality of magnetic particles; (2) an articulating junction, and articulation method thereof, wherein the stability and fluidity of the junction is based, at least in part, on the magnetic field(s) of the plurality of magnetic particles; and (3) reducing the resistance to articulation and/or increasing the structural integrity and support, of the articulating junction, via electro-magnetism. Further, the present invention is directed generally to the synergistic combination of magnetic particles and preferred bio-implant-materials and additive-manufacturing methods along with Baker correlation codes. Further, the present invention is directed to an artificial joint for implantation into a living body and methods for constructing such an artificial joint.Type: GrantFiled: March 9, 2018Date of Patent: December 17, 2019Inventor: Stephen Bramblett Johnson
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Patent number: 10500071Abstract: Embodiments of the present disclosure relate to the field of medical instrument, in particular to a sensor device applied in an articulation and an artificial limb system to improve control precision of the sensor. The sensor device of the present disclosure includes a plurality of magnets spaced apart from each other, the adjacent magnets having opposite polarities in a moving direction of the articulation; and at least one magnetic inductor for monitoring a displacement of the magnets caused by movement of the articulation.Type: GrantFiled: June 21, 2016Date of Patent: December 10, 2019Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Hong Wang
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Patent number: 10335282Abstract: A joint prosthesis includes first and second articulated corresponding joint components implantable within a body of a patient, wherein the corresponding joint components have corresponding surfaces that are relatively displaceable with respect to each other over a predefined functional range of motion of the corresponding joint components. The corresponding joint components each comprise one or more magnetic elements creating gradient magnetic fields having relatively strongest and weakest field areas over different portions of each of the corresponding surfaces, wherein the gradient magnetic fields are strongest in attraction at positions of the corresponding surfaces which align when the corresponding surfaces are at a boundary of the predefined functional range of motion, and deter joint dislocation by deterring relative movement of the corresponding surfaces beyond the boundary.Type: GrantFiled: February 9, 2016Date of Patent: July 2, 2019Inventor: Richard A. Rogachefsky
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Patent number: 10022236Abstract: An internal joint cavity expander includes femur-side magnets, tibia-side magnets, and magnetic shield-members. Each femur-side magnet has a plate curved into an arc and fixed to a femur. Each tibia-side magnet has length smaller than the femur-side magnet length and having a plate curved into arc concentric with the femur-side magnet arc. Each tibia-side magnet is fixed to a tibia. The pole on the convex surface of each femur-side magnet is same as the pole on the concave surface corresponding tibia-side magnet. The convex surface of each femur-side magnet faces the concave surface of corresponding tibia-side magnet. Each magnetic shield-member covers the surface of corresponding femur-side magnet and tibia-side magnet facing the skin throughout range in which the femur-side magnet moves relative to the tibia-side magnet. Each magnetic shield-member prevents magnetism of corresponding magnets and from leaking outside without hindering the femur-side magnet movement relative to the tibia-side magnet.Type: GrantFiled: February 10, 2015Date of Patent: July 17, 2018Assignees: JAPAN TISSUE ENGINEERING CO., LTD.Inventor: Mitsuo Ochi
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Patent number: 9962266Abstract: A system for long bone arthroplasty includes humeral head prosthesis components, and an array of humeral head prosthesis components, each humeral head prosthesis component in the array having a convex articulation surface that is hemi-elliptical and defined by a major axis, a minor axis, an apex, and a base having an elliptical cross sectional shape defined by a major diameter along the major axis and a minor diameter along the minor axis. Each humeral head prosthesis component in the array is characterized by a ratio relationship of the minor diameter divided by the major diameter of the base, each having a major diameter and a minor diameter that is different from each of the other prosthesis components in the array, wherein as the major diameter is increased the ratio of the minor diameter to the major diameter is decreased.Type: GrantFiled: September 12, 2016Date of Patent: May 8, 2018Assignee: Deltoid, LLCInventor: C. Scott Humphrey
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Patent number: 9750611Abstract: A method and system for repairing a defect area in a surface of a joint include providing a mold having a first surface and a second surface, positioning the mold within the joint such that at least part of the mold first surface overlies the defect area, and depositing a repair material under the mold first surface within the defect area to create a repaired site within the joint.Type: GrantFiled: July 24, 2014Date of Patent: September 5, 2017Inventor: Barry M. Fell
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Patent number: 9700234Abstract: A method of storing information relating, to a medical implant device having a number of implant elements includes receiving a first image, the first image showing a surgical site and the medical implant device, creating a second image using the first image and a stored list of possible implant elements, the second image showing the surgical site and the medical implant device with a number of labels associated therewith, wherein each of the labels is associated with a respective one of the implant elements and indicates one of the possible implant. elements from the stored list, and storing the second image on an transponder device structured to be attached to the medical implant device or at a medically appropriate site on or within a patient's body.Type: GrantFiled: September 19, 2014Date of Patent: July 11, 2017Assignee: University of Pittsburgh—Of the Commonwealth System of Higher EducationInventors: Marlin H. Mickle, John Lee Berger
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Patent number: 9436925Abstract: A device includes a code that is interpretable to identify a three-dimensional (3D) design specification by which a replacement for the device can be printed on a 3D printer.Type: GrantFiled: October 1, 2014Date of Patent: September 6, 2016Inventor: James Andrew Combs
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Patent number: 9271841Abstract: A ball joint prosthesis can include a shell, having an outer articular surface of a first material and an open distal end, configured to receive a sealing receptacle. A volume of a second material, within the shell, can be more compressible than the first material. The ball joint prosthesis can have an effective compressibility that is intermediate between a compressibility of the first material and a compressibility of the second material.Type: GrantFiled: December 17, 2013Date of Patent: March 1, 2016Assignee: ZIMMER, INC.Inventors: Jeff Dickerson, J. Craig Fryman, Donald L. Yakimicki
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Patent number: 9204971Abstract: A monolithic interpositional arthroplasty implant for use in repairing gyngylmus joints such as the joints of the ankle. The implant is a monolithic tibiotalar implant having a first major surface shaped to be positioned against a tibia. The tibia is allowed to articulate across the first major surface. A second major surface is shaped to be positioned against the talus.Type: GrantFiled: September 7, 2011Date of Patent: December 8, 2015Assignee: MEMOMETAL TECHNOLOGIESInventors: Mark A. Rydell, Scott McGarvey, Jeffrey C. Felt
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Patent number: 9055918Abstract: A method of determining patient follow-up subsequent to an orthopaedic procedure includes determining the number of cycles of use of an orthopaedic joint of the patient. If a predetermined threshold is exceeded, communication with an orthopaedic care provider is initiated. A patient monitoring system is also disclosed.Type: GrantFiled: March 24, 2014Date of Patent: June 16, 2015Assignee: DePuy Synthes Products, Inc.Inventors: Mark R. DiSilvestro, Terry L. Dietz, Robert S. Hastings
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Patent number: 9011491Abstract: A spine prosthesis is provided and in particular, related to the facet joint of a spine. A spinal implant comprises a facet prosthesis including an insert to be positioned within a joint capsule between facets of a zygapophyseal joint. The insert may comprise a member having two opposing facet interfacing portions. A facet prosthesis exerts a distraction force between facets of a facet joint and may comprise a curable material to be injected into the facet joint. A facet prosthesis may also comprise a pair of magnets, each magnet coupled to a facet and oriented with like poles facing each other to provide a distracting force away from each other. A spine implant may also include an insert to be positioned within the joint capsule, a securing member comprising an elongate portion extending through part of a facet, and an anchor to anchor the securing member to the facet.Type: GrantFiled: January 9, 2012Date of Patent: April 21, 2015Assignees: K Spine, Inc., Albany Medical CollegeInventors: Allen L. Carl, Dan Sachs, Meir Rosenberg
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Patent number: 8961615Abstract: A prosthesis for reconstructing a multibone joint such as a wrist. A patient's scaphoid is removed to create a void. The scaphoid has a plurality of adjacent bones, each of the adjacent bones comprising a surface generally facing the void. The surface of at least two of the adjacent bones is prepared by affixing a magnetic element thereto and a magnetic scaphoid implant is inserted into the void. A magnetic relationship exists between the magnetic elements and the magnetic scaphoid implant.Type: GrantFiled: July 1, 2014Date of Patent: February 24, 2015Inventor: Richard A. Rogachefsky
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Patent number: 8926705Abstract: A multi-component joint assembly incorporated into reconditioned end surfaces established between a first bone and opposing second bone. A first component is anchored into a reconditioned end surface of the first bone and exhibits a first exposed support surface. A second component is anchored into a reconditioned end surface of at least one of radius and ulna bones and exhibits a second exposed support surface. An intermediate component is supported in articulating fashion between the first and second anchored components. A plurality of micro debris entrapment chamber subassemblies are incorporated into the components and communicate with at least one of the articulating surfaces for isolating and capturing debris resulting from joint wear.Type: GrantFiled: October 1, 2012Date of Patent: January 6, 2015Assignee: Linares Medical Devices, LLCInventors: Miguel A. Linares, Miguel A. Linares, Jr.
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Publication number: 20150005886Abstract: Methods are described for improving the performance of implanted prosthetic joints through the use of magnetic technology. Arrays of magnets are employed to modify static and/or dynamic loads developed on prosthetic joints during their use. Resulting advantages include, but are not limited to: longer functional prosthetic life; reduced frequency of surgical procedures for repair or replacement of prosthetics; reduced rate of prosthetic-associated complications such as osteolysis and/or joint dislocation; and enhanced economic benefits proceeding from these advantages.Type: ApplicationFiled: July 1, 2013Publication date: January 1, 2015Inventor: John Michael Pinneo
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Patent number: 8882851Abstract: Embodiments of the invention include an implantable force distribution boot with hydraulic features that mimic the natural hydraulics of a joint. Further embodiments include an exterior prosthetic leg device having intermittent and/or variable electromagnetic features that can engage with magnetic blades on the implantable force distribution boot. In use, the exterior prosthetic leg can be maintained on a residual limb by magnetic force between the implanted blades and the exterior electromagnets. Also disclosed are surgical techniques for preparing a residual limb to better receive and adapt to a prosthetic device. The techniques include an improved surgical method for harvesting a vascularized glabrous skin free flap.Type: GrantFiled: September 20, 2011Date of Patent: November 11, 2014Inventor: Larry Nelson Smith
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Patent number: 8801796Abstract: A method of reconstructing a wrist includes removing a patient's scaphoid to create a void. The scaphoid has a plurality of adjacent bones, each of the adjacent bones comprising a surface generally facing the void. The surface of at least two of the adjacent bones is prepared by affixing a magnetic element thereto and a magnetic scaphoid implant is inserted into the void. A magnetic relationship exists between the magnetic elements and the magnetic scaphoid implant.Type: GrantFiled: December 31, 2012Date of Patent: August 12, 2014Inventor: Richard A. Rogachefsky
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Patent number: 8790409Abstract: Implantable components configured to be secured to a recipient with a bonding agent are presented herein. The implantable components are configured to be implanted adjacent to a recipient's bone and/or tissue and have a surface for attachment to the bonding agent.Type: GrantFiled: December 7, 2012Date of Patent: July 29, 2014Assignee: Cochlear LimitedInventors: Koen Van den Heuvel, Joris Walraevens, Wim Bervoets
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Publication number: 20140188230Abstract: A method of reconstructing a wrist includes removing a patient's scaphoid to create a void. The scaphoid has a plurality of adjacent bones, each of the adjacent bones comprising a surface generally facing the void. The surface of at least two of the adjacent bones is prepared by affixing a magnetic element thereto and a magnetic scaphoid implant is inserted into the void.Type: ApplicationFiled: December 31, 2012Publication date: July 3, 2014Inventor: Richard A. Rogachefsky
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Patent number: 8702799Abstract: A method of determining patient follow-up subsequent to an orthopaedic procedure includes determining the number of cycles of use of an orthopaedic joint of the patient. If a predetermined threshold is exceeded, communication with an orthopaedic care provider is initiated. A patient monitoring system is also disclosed.Type: GrantFiled: November 18, 2011Date of Patent: April 22, 2014Assignee: DePuy Synthes Products, LLCInventors: Mark R. DiSilvestro, Terry Dietz, Robert Hastings
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Publication number: 20140025172Abstract: Total joint replacements for implants include a first member configured to attach to a first bone, a second member configured to reside in an adjacent second bone and a locking mechanism. The locking mechanism is configured to (i) lock the first and second members in alignment for full extension or other defined stabilized configuration and (ii) unlock to allow the first and second members to pivot relative to each other for flexion or bending.Type: ApplicationFiled: July 17, 2013Publication date: January 23, 2014Inventors: Eric Montgomery Lucas, John David DesJardins, Kim John Chillag, Frank Richard Voss
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Patent number: 8273130Abstract: The invention relates to a prosthesis for replacing a joint connection, wherein like magnetic fields from the condyle 10, socket 12 and joint collar 14 overlap in such a way that the repulsive forces generate a suspended state of the condyle 10 in the bearing and the damping effect is maximized. The invention is also directed to a method for replacing a bone junction in a mammal, wherein the prosthesis is fastened to the articular bone and repulsive forces generate a levitated state of the condyle 10 under load.Type: GrantFiled: November 5, 2008Date of Patent: September 25, 2012Assignee: Universität RostockInventor: Georg Gradl
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Patent number: 8123812Abstract: A prosthesis for articulation (e.g., hip or joint prosthesis) is provided, which includes a pair of articulation components respectively defining a pair of articulation surfaces movably engageable with each other. In some embodiments, each of the articulation surfaces is formed from a biocompatible ceramic (e.g., doped silicon nitride ceramic) having a flexural strength greater than about 700 Mega-Pascal (MPa) and a toughness greater than about 7 Mega-Pascal root meter (MPam0.5).Type: GrantFiled: August 27, 2009Date of Patent: February 28, 2012Assignee: Amedica CorporationInventor: Ashok C. Khandkar
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Patent number: 8043290Abstract: Methods and apparatus for incrementally manipulating an internal body member of a patient are disclosed. The apparatus has a magnetic implant adapted to be received on a location of the body member, a platform external to the patient, and a magnetic member coupled to the platform, wherein the magnetic member generates a magnetic force between the implant and the platform to incrementally manipulate the body member. The implant and external magnetic member are preferably rare earth magnets or an array of rare earth magnets, and are configured to generate an attractive or repulsive force between the implant and the platform to reposition, reorient, deform, or lengthen the body member.Type: GrantFiled: September 29, 2004Date of Patent: October 25, 2011Assignee: The Regents of the University of California, San FranciscoInventors: Michael R. Harrison, Richard J. Fechter, Arthur Moran
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Patent number: 8043338Abstract: An assembly for post-operatively treating an abnormal curvature of vertebrae of a spinal column. The assembly includes an elongate member extending in a generally vertical direction along a posterior side of the spinal column and a transverse member fastened to a vertebra of the spinal column with a plurality of fasteners and extending in a generally horizontal direction. The transverse member has a threaded region. The assembly further includes a coupler coupling the elongate member to the transverse member. The coupler includes a rotating member threadedly engaged with the threaded region of the transverse member. Rotation of the rotating member provides lateral movement of the transverse member relative to the elongate member, thereby moving the vertebra in a horizontal direction and applying a corrective force to the vertebra.Type: GrantFiled: December 3, 2008Date of Patent: October 25, 2011Assignee: Zimmer Spine, Inc.Inventor: Jack A. Dant
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Publication number: 20110257754Abstract: A hydromagnetic joint includes a first joint part having a first magnetic element with a magnetically charged surface, and a first buoyant element coupled with the first magnetic element, and a second joint part including a second magnetic element having a second magnetically charged surface that opposes the first magnetically charged surface of the first magnetic element, and a second buoyant element coupled with the second magnetic element. The hydromagnetic joint has a liquid disposed between the first and second joint parts. The first and second joint parts are moveable relative to one another and are in fluid communication with the liquid. The first and second magnetically charged surfaces have a common polarity and repel one another.Type: ApplicationFiled: February 21, 2011Publication date: October 20, 2011Applicant: Fleischmann's Institute of Science & HealthInventor: David T. Fleischmann
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Patent number: 8029570Abstract: Permanent magnets are implanted in bone to unload compressive forces at joints using the repulsive force therebetween. A porous metal container is implanted first and becomes fixed in place by bone growth. The permanent magnet is then inserted in the container and retained in place. A magnet prescription system includes a display and input device which enables a user to alter parameters such as magnet size, strength and placement and calculate and display the repulsive force that will result.Type: GrantFiled: September 25, 2002Date of Patent: October 4, 2011Assignee: Mayo Foundation for Medical Education and ResearchInventors: Darryl E. Barnes, David G. Lewallen, Kenton R. Kaufman
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Patent number: 7763053Abstract: A device for correction of a spinal deformity. In one embodiment, the device includes a cable having a first end portion, and an opposite, second end portion attachable to a vertebra, and means for adjusting the tension of the cable so as to impose a corrective displacement on the vertebra.Type: GrantFiled: August 30, 2005Date of Patent: July 27, 2010Inventor: Jeffrey D. Gordon
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Patent number: 7753915Abstract: Bone length adjustment method and system includes a two-part telescopic device connected to bone parts whose length between the connection points is to be adjusted, with each part of the telescopic device being secured to the bone part, and a rod with an embedded permanent magnet which is in threaded engagement at one or both of its ends with one or both of the parts of the telescopic device. The permanent magnet in the rod is excited by an external solenoid arrangement to cause a radial force to develop at the rod thereby causing it to rotate. Rotation of the rod is converted via the threads at one or both of its ends to axial motion or movement of the telescopic parts relative to each other and thereby causes an increase or decrease in the bone length depending on the direction of axial movement between the telescopic parts.Type: GrantFiled: June 14, 2007Date of Patent: July 13, 2010Inventors: August Eksler, Luiza Blyakher, Vladimir Krakhman
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Publication number: 20100145464Abstract: Disclosed is a device and method of management of forces within a joint. The device includes a first component with a first magnet arrangement providing a first magnetic field, a second component to interface with the first component with a second magnet arrangement providing a second magnetic field, and a compressible volume that is coupled with the second component that controls the separation of the first and second magnetic fields based upon a compressive force that causes the compressible volume to compress. The method includes using the normal force generated between the first and second components during joint use as the compressive force, causing the compressible volume to compress, bringing the first and a second magnetic fields into contact and overlap, and creating forces to couple with the normal force and regulating the overall normal force between the first and second components.Type: ApplicationFiled: December 5, 2008Publication date: June 10, 2010Inventor: John-William Sidhom
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Patent number: 7704282Abstract: An orthopaedic element has an information storage portion. A transmitter portion and an internal power source portion may be associated with the body of the orthopaedic element. Information, such as data related to the orthopaedic element, patient or caregiver can be stored in the information storage portion. The transmitter portion is coupled to the information storage portion and the internal power source portion. The stored information is selectively transmitted to an external receiver and data interpretation device.Type: GrantFiled: July 9, 2004Date of Patent: April 27, 2010Assignee: Depuy Products, Inc.Inventors: Mark R. Disilvestro, Robert S. Hastings, Terry L. Dietz, Jason T. Sherman
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Patent number: 7531002Abstract: A prosthetic endplate having articulation surfaces whose relative positions can be post-operatively adjusted.Type: GrantFiled: April 16, 2004Date of Patent: May 12, 2009Assignee: Depuy Spine, Inc.Inventors: Jeffrey Karl Sutton, Edward John Crowe, Kristy Lynn Davis, Michael O'Neil, Richard Pellegrino, Hassan Serhan
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Patent number: 7507774Abstract: The present invention provides an irradiated crosslinked polyethylene containing reduced free radicals, preferably containing substantially no residual free radical. Disclosed is a process of making irradiated crosslinked polyethylene by irradiating the polyethylene in contact with a sensitizing environment at an elevated temperature that is below the melting point, in order to reduce the concentration of residual free radicals to an undetectable level. A process of making irradiated crosslinked polyethylene composition having reduced free radical content, preferably containing substantially no residual free radicals, by mechanically deforming the polyethylene at a temperature that is below the melting point of the polyethylene, optionally in a sensitizing environment, is also disclosed herein.Type: GrantFiled: October 17, 2007Date of Patent: March 24, 2009Assignees: The General Hospital Corporation, Cambridge Polymer Group, Inc.Inventors: Orhun K. Muratoglu, Stephen H. Spiegelberg, Gareth H. McKinley
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Patent number: 7481841Abstract: An adjustable prosthesis includes an actuator for adjusting the prosthesis subsequent to surgical implantation thereof. The actuator is activated by application of an trans-cutaneous signal. A method of operating an adjustable prosthesis is also disclosed.Type: GrantFiled: June 30, 2004Date of Patent: January 27, 2009Assignee: DePuy Products, Inc.Inventors: Stephen A. Hazebrouck, Mark B. Lester, Charles A. Andrade, Jr., Joshua R. Murphy, Sheryl L.A. Andrade
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Patent number: 7347874Abstract: A joint endoprosthesis system has two prosthetic components to be affixed to two bones of a human joint. A sensor and electronic components are affixed to one of the prosthetic components so that a record can be maintained of the number of times the patient moves the prosthetic joint in a particular way, such as in walking. This information is stored within the electronic components and selectively transmitted to an external system for interpretation of the data. The caregiver can use this data to counsel the patient on life-style changes or to prescribe therapeutic treatments if available.Type: GrantFiled: July 9, 2004Date of Patent: March 25, 2008Assignee: Depuy Products, Inc.Inventor: Mark R. Disilvestro