Patents by Inventor Jerome J. Klawitter
Jerome J. Klawitter 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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Patent number: 9241802Abstract: A humeral head resurfacing implant (11) that has a modulus of elasticity close to that of human cortical bone as a result of its design from an integral substrate of isotropic graphite covered completely with a reinforcing layer of dense isotropic pyrolytic carbon. A carefully engineered cruciform stem (15) extends from the axial center of a flat distal circular surface (23) of a spherical cap portion (19) of the implant head located within the confines of a surrounding skirt portion (21).Type: GrantFiled: April 7, 2014Date of Patent: January 26, 2016Assignee: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, Robert B. More, Monti R. Gourley, Joseph P. Ritz, Evgeny G. Podnos
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Publication number: 20140277553Abstract: Embodiments of the invention may provide a stem and a head and a liner that can be assembled together to form an implant, such as may be used in repair of the distal ulnoradial joint. A given head and liner and stem may be assembled to each other in more than one configuration, providing more than one possible external shape for a given set of stem and head and liner. The head may be non-symmetric about its midplane and may be open at both ends. A kit may contain more than one head assemblable to a given stem with an intermediate liner, with the various heads providing various different external shapes of the device.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, Monti R. Gourley
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Publication number: 20140222154Abstract: A humeral head resurfacing implant (11) that has a modulus of elasticity close to that of human cortical bone as a result of its design from an integral substrate of isotropic graphite covered completely with a reinforcing layer of dense isotropic pyrolytic carbon. A carefully engineered cruciform stem (15) extends from the axial center of a flat distal circular surface (23) of a spherical cap portion (19) of the implant head located within the confines of a surrounding skirt portion (21).Type: ApplicationFiled: April 7, 2014Publication date: August 7, 2014Applicant: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, Robert B. More, Monti R. Gourley, Joseph P. Ritz, Evgeny G. Podnos
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Patent number: 8690958Abstract: A humeral head resurfacing implant (11) that has a modulus of elasticity close to that of human cortical bone as a result of its design from an integral substrate of isotropic graphite covered completely with a reinforcing layer of dense isotropic pyrolytic carbon. A carefully engineered cruciform stem (15) extends from the axial center of a flat distal circular surface (23) of a spherical cap portion (19) of the implant head located within the confines of a surrounding skirt portion (21).Type: GrantFiled: June 14, 2012Date of Patent: April 8, 2014Assignee: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, Robert B. More, Monti R. Gourley, Joseph P. Ritz, Evgeny G. Podnos
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Patent number: 8529632Abstract: A hemi-arthroplasty implant (11) joint replacement for the base of the first metacarpal of the CMC joint is created which can effectively restore and reestablish functional joint mechanics. The implant (11) has a unique head section (13) creating a particular interrelation between a spherical head articular surface (19), that is received in a surgically prepared cavity in the trapezium, wherein a supporting neck (21) in a re-entrant region joins the head to a flat, generally oblong collar (15).Type: GrantFiled: September 17, 2009Date of Patent: September 10, 2013Assignee: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, Joseph P. Ritz, Monti R. Gourley, Ashley Degrood
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Patent number: 8366780Abstract: A prosthetic implant comprising a head having a spherical pyrocarbon shell (13,73) that is attached to a metal substructure (17,77) via an intermediate element (15,45,75). A subassembly of the intermediate element and the pyrocarbon shell may be connected to the metal substructure via a metal split ring (19) that resides partially in each of two facing grooves (33,35) or via interengaging elements (85,87,91) that are provided in two juxtaposed cylindrical surfaces. The design is such that compressive forces applied to the implant at its spherical articulating surface are transferred via compression through the pyrocarbon shell to the metal substructure.Type: GrantFiled: November 28, 2007Date of Patent: February 5, 2013Assignee: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, Monti R. Gourley
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Publication number: 20120296436Abstract: A humeral head resurfacing implant (11) that has a modulus of elasticity close to that of human cortical bone as a result of its design from an integral substrate of isotropic graphite covered completely with a reinforcing layer of dense isotropic pyrolytic carbon. A carefully engineered cruciform stem (15) extends from the axial center of a flat distal circular surface (23) of a spherical cap portion (19) of the implant head located within the confines of a surrounding skirt portion (21).Type: ApplicationFiled: June 14, 2012Publication date: November 22, 2012Applicant: ASCENSION ORTHOPEDICS, INC.Inventors: Jerome J. KLAWITTER, Robert B. MORE, Monti R. GOURLEY, Joseph P. RITZ, Evgeny G. PODNOS
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Publication number: 20120022664Abstract: An orthopedic prosthetic implant comprises a metal alloy stem element (13, 63, 113) which has one end portion (19, 69, 119) constructed to reside in the medullary cavity of a bone and an integral connector (23, 73, 123) at the opposite end, to which a crystalline brittle head (17, 67, 117) preferably made of pyrocarbon-coated graphite is joined. The effective joinder of the head to the stem element is achieved through a polymeric insert (15, 65, 115) which has selected elastic properties. The design and material of the polymeric insert allow it to be securely received within an interior cavity (35, 77, 131) of the pyrocarbon-coated graphite head and mated to the stem connector in an either rigidly or bi-polar arrangement. Such joinder allows the composite implants that utilize the most desirable properties of metallic and brittle crystalline materials.Type: ApplicationFiled: September 22, 2011Publication date: January 26, 2012Applicant: ASCENSION ORTHOPEDICS, INC.Inventors: Steve VANDER MEULEN, Jerome J. KLAWITTER
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Publication number: 20120010724Abstract: An orthopedic prosthetic implant comprises a metal alloy stem element (13, 63, 113), which has one end portion (19, 69, 119) constructed to reside in the medullary cavity of a bone and an integral connector (23, 73, 123) at the opposite end to which crystalline brittle head (17, 67, 117), preferably made of pyrocarbon-coated graphite, is joined. The head interfaces with human bone, and its effective joinder to the stem element is achieved through a polymeric insert (15, 65, 115) of proportional shape and design which has selected elastic properties. The design and material of the polymeric insert allow it to be securely received within an interior cavity (35, 77, 131) of the pyrocarbon-coated graphite head and mated to the stem connector in an either rigidly or bi-polar arrangement. The method of joinder allows the construction of composite implants that utilize the most desirable properties of metallic and brittle crystalline materials.Type: ApplicationFiled: September 21, 2011Publication date: January 12, 2012Applicant: ASCENSION ORTHOPEDICS, INC.Inventors: Steve VANDER MEULEN, Jerome J. KLAWITTER
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Patent number: 8034116Abstract: An orthopedic prosthetic implant comprises a metal alloy stem element (13, 63, 113), which has one end portion (19, 69, 119) constructed to reside in the medullary cavity of a bone and an integral connector (23, 73, 123) at the opposite end to which crystalline brittle head (17, 67, 117), preferably made of pyrocarbon-coated graphite, is joined. The head interfaces with human bone, and its effective joinder to the stem element is achieved through a polymeric insert (15, 65, 115) of proportional shape and design which has selected elastic properties. The design and material of the polymeric insert allow it to be securely received within an interior cavity (35, 77, 131) of the pyrocarbon-coated graphite head and mated to the stem connector in an either rigidly or bi-polar arrangement. The method of joinder allows the construction of composite implants that utilize the most desirable properties of metallic and brittle crystalline materials.Type: GrantFiled: September 19, 2008Date of Patent: October 11, 2011Assignee: Ascension Orthopedics, Inc.Inventors: Steve Vander Meulen, Jerome J. Klawitter
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Publication number: 20110172782Abstract: A hemi-arthroplasty implant (11) joint replacement for the base of the first metacarpal of the CMC joint is created which can effectively restore and reestablish functional joint mechanics. The implant (11) has a unique head section (13) creating a particular interrelation between a spherical head articular surface (19), that is received in a surgically prepared cavity in the trapezium, wherein a supporting neck (21) in a re-entrant region joins the head to a flat, generally oblong collar (15).Type: ApplicationFiled: September 17, 2009Publication date: July 14, 2011Applicant: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, Joseph P. Ritz, Monti R. Gourley, Ashley Degrood
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Publication number: 20100063593Abstract: A prosthetic implant comprising a head having a spherical pyrocarbon shell (13,73) that is attached to a metal substructure (17,77) via an intermediate element (15,45,75). A subassembly of the intermediate element and the pyrocarbon shell may be connected to the metal substructure via a metal split ring (19) that resides partially in each of two facing grooves (33,35) or via interengaging elements (85,87,91) that are provided in two juxtaposed cylindrical surfaces. The design is such that compressive forces applied to the implant at its spherical articulating surface are transferred via compression through the pyrocarbon shell to the metal substructure.Type: ApplicationFiled: November 28, 2007Publication date: March 11, 2010Applicant: ASCENSION ORTHOPEDICS, INC.Inventors: Jerome J. Klawitter, Monti R. Gourley
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Publication number: 20090240336Abstract: An orthopedic prosthetic implant comprises a metal alloy stem element (13, 63, 113), which has one end portion (19, 69, 119) constructed to reside in the medullary cavity of a bone and an integral connector (23, 73, 123) at the opposite end to which crystalline brittle head (17, 67, 117), preferably made of pyrocarbon-coated graphite, is joined. The head interfaces with human bone, and its effective joinder to the stem element is achieved through a polymeric insert (15, 65, 115) of proportional shape and design which has selected elastic properties. The design and material of the polymeric insert allow it to be securely received within an interior cavity (35, 77, 131) of the pyrocarbon-coated graphite head and mated to the stem connector in an either rigidly or bi-polar arrangement. The method of joinder allows the construction of composite implants that utilize the most desirable properties of metallic and brittle crystalline materials.Type: ApplicationFiled: September 19, 2008Publication date: September 24, 2009Applicant: ASCENSION ORTHOPEDICS, INC.Inventors: Steve VANDER MEULEN, Jerome J. KLAWITTER
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Patent number: 6159247Abstract: A joint prosthesis for replacement of the metacarpal-phalangeal (MP) joint (19) of a human finger which includes a metacarpal element (13) with a stem (15) for reception into the medullary cavity of the metacarpal bone (11) and a generally ball-shaped articular head (17) and a phalangeal element (14) with a stem (16) for reception into the medullary cavity of the proximal phalangeal bone (12) and a generally socket-shaped head (18) which conforms to the ball-shaped head (17). The metacarpal element (13)'s articular head (17) has reliefs (51,52) located on each of its two lateral sides so as to provide a generally free path for the collateral ligaments (43,44). The phalangeal element (14)'s articular head (18) has a dorsal protrusion (71) that resists subluxation-dislocation of the phalangeal bone (12) and grooves (31,32) in its concave surface (22) which allow biological fluids access to the inner regions of the articulation contact surfaces (21,22).Type: GrantFiled: May 4, 1999Date of Patent: December 12, 2000Assignee: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, William F. Ogilvie
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Patent number: 5782927Abstract: A joint prosthesis for replacement of the metacarpal-phalangeal (MP) joint of a human finger which includes a metacarpal element with a stem for reception into the medullary cavity of the metacarpal bone and a generally ball-shaped articular head and a phalangeal element with a stem for reception into the medullary cavity of the proximal phalangeal bone and a generally socket-shaped head which conforms to the ball-shaped head. The metacarpal element's articular head has reliefs located on each of its two lateral sides so as to provide a generally free path for the collateral ligaments. The phalangeal element's articular head has a dorsal protrusion, that resists subluxation-dislocation of the phalangeal bone, and grooves in its concave surface which allow biological fluids access to the inner regions of the articulation contact surfaces.Type: GrantFiled: November 6, 1996Date of Patent: July 21, 1998Assignee: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, William F. Ogilvie
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Patent number: 4535483Abstract: Suture rings are provided for heart valves having surrounding stiffening protrusions that are either integral parts of the heart valve bodies or are rigid rings held in interference fit within peripheral grooves of heart valve bodies. Metal retainer rings engage the stiffening protrusions to lock the retainer rings to the valve bodies and carry fabric coverings on their exterior surfaces that are suturable to the heart tissues. Deformable portions of the retainer rings are used to provide engagement between the retainer rings and the protrusions and also to permanently position bands that secure the fabric coverings to the retainer rings.Type: GrantFiled: January 17, 1983Date of Patent: August 20, 1985Assignee: Hemex, Inc.Inventors: Jerome J. Klawitter, Harry W. Cromie
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Patent number: 4451937Abstract: Heart valve prostheses have annular valve bodies with central passageways and valve members supported for pivotal and translational movement between open and closed positions. The occluders, which may be either of a bileaflet or single occluder design, are supported within the bodies by pairs of ears extending from opposite locations to interengage with corresponding arcuate depressions to guide the occluders between their closed positions where they seat against upstream protuberances of the valve bodies and their open position where they are positioned between the upstream protuberances and downstream protuberances.Type: GrantFiled: February 8, 1982Date of Patent: June 5, 1984Assignee: Hemex, Inc.Inventor: Jerome J. Klawitter
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Patent number: 4443894Abstract: A heart valve having a pair of leaflets which are guided between their open and closed positions by guides extending outward and received in dog-leg shaped depressions. The depressions each have a downstream section, which angles outward from a centerline plane of the valve body and a connected vertical upstream section. In the closed position the guides reside in intermediate locations to unload the force between the guides and the depression walls.Type: GrantFiled: April 12, 1982Date of Patent: April 24, 1984Assignee: Hemex, Inc.Inventor: Jerome J. Klawitter
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Patent number: 4373216Abstract: Heart valves having valve members which are guided between their open and closed positions by projections extending inward from the annular body and interengaging with complementary notches in the peripheries of the occluders. Protuberances associated with the projections cooperate to define the pivotal axes, serve as open and closed position stops, and retain the valve members within the valve body.Type: GrantFiled: September 15, 1981Date of Patent: February 15, 1983Assignee: Hemex, Inc.Inventor: Jerome J. Klawitter
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Patent number: D610686Type: GrantFiled: September 16, 2008Date of Patent: February 23, 2010Assignee: Ascension Orthopedics, Inc.Inventors: Jerome J. Klawitter, Joseph P. Ritz, Monti R. Gourley, Ashley Degrood