Screw Anchoring Means Patents (Class 623/23.27)
  • Patent number: 10278749
    Abstract: The invention relates to Implant device (1) comprising a rigid element (10) being designed to be fastened to a femur implant (20) in a fastened state of said rigid element (10), wherein particularly said femur implant (20) is an intramedullary nail or a femoral stem. According to the invention said rigid element (10) is designed as a hook-shaped plate (10) for encompassing the greater trochanter (3) of the femur (2) at least in sections when being arranged in said fastened state and when said femur implant (20) is arranged in or on the femur (2) as intended.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: May 7, 2019
    Assignee: UNIVERSITATSSPITAL BASEL
    Inventors: Marcel Jakob, Patrick Studer
  • Patent number: 10258392
    Abstract: In one general aspect, an orthopaedic fixation device includes an inner core and shaft formed of a multi-layered, fiber-reinforced composite. A sensing element is embedded within the multi-layered, fiber-reinforced composite.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: April 16, 2019
    Assignee: SMITH & NEPHEW, INC.
    Inventors: Sied W. Janna, James K. Rains, Nicholas S. Ritchey, Darren James Wilson
  • Patent number: 9855081
    Abstract: In one general aspect, an orthopedic fixation device includes an inner core and shaft formed of a multi-layered, fiber-reinforced composite. A sensing element is embedded within the multi-layered, fiber-reinforced composite.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: January 2, 2018
    Assignee: SMITH & NEPHEW, INC.
    Inventors: Sied W. Janna, James K. Rains, Nicholas S. Ritchey, Darren James Wilson
  • Patent number: 9743963
    Abstract: The present invention provides a method for stabilizing a fractured bone. The method includes positioning an elongate rod in the medullary canal of the fractured bone and forming a passageway through the cortex of the bone. The passageway extends from the exterior surface of the bone to the medullary canal of the bone. The method also includes creating a bonding region on the elongate rod. The bonding region is generally aligned with the passageway of the cortex. Furthermore, the method includes positioning a fastener in the passageway of the cortex and on the bonding region of the elongate rod and thermally bonding the fastener to the bonding region of the elongate rod while the fastener is positioned in the passageway of the cortex.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: August 29, 2017
    Assignee: P Tech, LLC
    Inventors: Peter M. Bonutti, Matthew J. Cremens, Justin E. Beyers
  • Patent number: 9427266
    Abstract: A bone fixation device includes an elongated body (a) having a first channel extending therethrough and configured for insertion into a bone, a first opening (b) formed on a first side wall of the body, the first side wall facing a lateral direction when implanted in a target orientation within the bone and a second opening (c) formed on a second side wall of the body opposite the first opening. A second channel (d) extends through the body from the first opening to the second opening and is dimensioned to permit insertion of an implant therethrough. A first bump (e) is positioned about a periphery of the first opening at a location at which a stress concentration would be a maximum if no such first bump were formed. The first bump is dimensioned to diffuse a concentration of stress about the periphery due to forces applied thereto by an implant extending through the second channel.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: August 30, 2016
    Assignee: DePuy Synthes Products, Inc.
    Inventor: Stanley J. Kmiec, Jr.
  • Patent number: 8632843
    Abstract: The invention provides methods and systems that control the application of a material onto micro-rough implant surfaces. Thus, the present invention provides method of applying crystalline nanoparticles onto the surface of an implant to produce an implant with a crystalline nanoparticle layer on its surface, the method comprising: providing an implant substrate body; applying crystalline nanoparticles onto the surface of the implant; and rotating the implant, to produce an implant with a crystalline nanoparticle layer on its surface. This method of nanoparticle application is designed to promote the integration of implants, such as dental and orthopedic screws, into living tissue, and offers the ability to control the thickness and uniformity of the nanoparticle layer, in one or several layers, while simultaneously retaining the microroughness of the implant.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: January 21, 2014
    Assignee: Promimic AB
    Inventors: Martin Andersson, Fredrik Currie, Per Kjellin
  • Patent number: 8632603
    Abstract: A system for securing a prosthesis in a bone includes a reference anchor for insertion into a cavity of a bone to define a reference point during prosthesis implantation, the reference anchor including a body having a mating feature and a gripping projection for engaging an inner surface of the bone cavity. The system also includes a stem having a terminal end adapted to mate with the engagement feature of the reference anchor such that the stem is disposed at a desired position relative to the reference point.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: January 21, 2014
    Assignee: Tornier, Inc.
    Inventors: Brian C. Hodorek, Robert Courtney, Jr., Ryan Schlotterback
  • Patent number: 8444653
    Abstract: A system for implanting a prosthetic device with an opening into a bone includes a plug that is removably received within the opening of the prosthetic device. The system also includes a bone removal tool that advances into the bone from outside the bone and that removes a portion of the bone while advancing into the bone to reveal the plug. The bone removal tool includes a plug engaging portion that engages with the plug. The bone removal tool at least partially removes the plug from the opening of the prosthetic device while engaged with the plug. Moreover, the system includes an alignment system that detects whether the bone removal tool and the plug are substantially axially aligned.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: May 21, 2013
    Assignee: Biomet Manufacturing Corp.
    Inventors: Jeffrey H. Nycz, Brian D. Salyer, Jon C. Serbousek
  • Publication number: 20080004711
    Abstract: An external proximal femoral prosthesis for total hip arthroplasty (THA) is described, which fundamentally comprises a shell configured a hollow, thin-wall, asymmetric bell shape and a plurality of tension anchor means. An inner transverse cross contour of the shell forms a cavity, which could be affixable to a profile of outer surface of the area of neck, trochantic bed and calcar of the proximal femur. A neck portion of the shell is compatible with acetabular components (ball and cup). The prosthesis is mechanically fastened by tension anchor means during the operation and further biologically secured by in-growing bone through the side holes on the shell wall and into its interior coating surface of implant wall thereafter. The loading force on the femoral head would be well transferred and distributed on the shell and then directly conducted into the cortical bone of the femoral shaft therearound.
    Type: Application
    Filed: June 28, 2006
    Publication date: January 3, 2008
    Inventors: XUE LI, PING XIE, KERRY Y XIE
  • Patent number: 7156879
    Abstract: A femur fixture for a hip-joint prosthesis comprising an intraosseous anchoring structure of a generally circular cross-section for screwing laterally into a complementary bore drilled laterally into the neck of a femur after resection of the femur head to an anchored position. The intraosseous anchoring structure has a proximal end, a distal end, a relatively short frusto-conical proximal section at the proximal end, and a proximal cylindrical section having a screw thread profile thereon. The proximal cylindrical section extends from the frusto-conical proximal section towards the distal end of the anchoring structure. The frusto-conical proximal section and the proximal cylindrical section each being dimensioned so as to bear against the cortex of the femur neck when the intraosseous anchoring structure is in the anchored position.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: January 2, 2007
    Assignee: Astra Tech AB
    Inventors: Tomas Albrektsson, Lars Carlsson, Magnus Jacobsson, Warren MacDonald, Stig Wennberg
  • Patent number: 6824568
    Abstract: An implant (1) for insertion into and permanent anchorage in bone tissue having an intraosseous anchoring structure (3). The anchoring structure (3) has a generally circular cross-section and comprises a first cylindrical section (11) of a first diameter, a second cylindrical section (13) of a second diameter less than the first diameter, said first and second cylindrical sections (11, 13) each being provided with a screw thread profile. The anchoring structure (3) also comprises a tapered connecting section (15) provided between an interconnecting said first and second cylindrical sections (11, 13).
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: November 30, 2004
    Assignee: Astra Tech AB
    Inventors: Tomas Albrektsson, Lars Carlsson, Magnus Jacobsson, Warren Macdonald, Stig Wennberg
  • Publication number: 20040236431
    Abstract: A universal shaft component capable of insertion as an anchorage in skeletal bone including a proximal humerus, phalange, distal or proximal tibia, distal or proximal femur, or thumb wherein the shaft is insertable axially within an internal bone cavity such that the outer surface of the shaft engages inner walls of said cavity, characterized in that the shaft has a proximal end and a distal end and on said outer surface of said shaft between said ends, at least one thread such that when the shaft is screwed into said bone cavity the at least one thread induces an axial compression force in said bone and distributes that compression force evenly along the bone over the length of the at least one thread.
    Type: Application
    Filed: July 9, 2004
    Publication date: November 25, 2004
    Inventor: Ronald Sekel
  • Patent number: 6811568
    Abstract: The present invention provides an artificial joint which can be rapidly, securely and easily fixed while being suited to an inner surface of a bone marrow hole by a novel structure absolutely different from the conventional one. An artificial joint is provided with a stem base portion (10) in which a desired head (2) and a desired socket (5) are in slidably contact with each other in a freely bending manner, stems (9, 16) are fitly attached to free ends of the head (2) and the socket (5) respectively, and the respective stems (9, 16) have therein locking screws (14) freely screwing to move along axial directions thereof, and a pair of stem pieces (15) having an elasticity provided to protrude on both front portions of the stem base portion (10), and the locking screws (14) are forcedly inserted within the stem pieces (15) so as to expand them outward, thereby making them tightly contact with and fix to inner surfaces of bone marrow holes (19, 21).
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: November 2, 2004
    Assignees: Aidall International Ltd., Nakashima Propeller Co., Ltd.
    Inventor: Yoshitaka Minamikawa
  • Publication number: 20040162621
    Abstract: A femoral neck fixation prosthesis and method of using same which reduces bone loss and the avoids the other shortcomings of the prior art by allowing the fixation of a stable femoral head replacement while reducing the amount of the femur which must be reamed for the insertion of the prosthesis. The preferred embodiment provides that the femoral head is attached to a fixation prosthesis which extends coaxially through the canal of the femoral neck, into the femur, and is then attached to the opposite lateral wall of the femur. In this manner, the prosthesis serves to imitate the original structure of the femoral neck. No other support members, either crosspins or arms extending into the length of the femur, are required.
    Type: Application
    Filed: February 14, 2004
    Publication date: August 19, 2004
    Inventor: Theodore W. Crofford
  • Publication number: 20040002759
    Abstract: Arthroplasty devices having improved bone in growth to provide a more secure connection within the body. Different embodiments disclosed include devices having threaded intramedullary components, devices configured to receive bone growth promoting substances, devices with resorbable components, and devices configured to reduce shear stress.
    Type: Application
    Filed: June 27, 2003
    Publication date: January 1, 2004
    Inventor: Bret A. Ferree
  • Publication number: 20030195635
    Abstract: A femoral neck fixation prosthesis and method of using same which reduces bone loss and the avoids the other shortcomings of the prior art by allowing the fixation of a stable femoral head replacement while reducing the amount of the femur which must be reamed for the insertion of the prosthesis. The preferred embodiment provides that the femoral head is attached to a fixation prosthesis which extends coaxially through the canal of the femoral neck, into the femur, and is then attached to the opposite lateral wall of the femur. In this manner, the prosthesis serves to imitate the original structure of the femoral neck. No other support members, either crosspins or arms extending into the length of the femur, are required.
    Type: Application
    Filed: August 27, 2002
    Publication date: October 16, 2003
    Inventor: Theodore W. Crofford
  • Patent number: 6610099
    Abstract: The invention relates to a fixture for insertion into and permanent anchorage in a cavity (32) formed in bone tissue. The fixture is made of a fixture member (2), which has an insertion end surface (10) and a cylindrical peripheral surface (6) provided with screw threads, and a plurality of circumferentially-spaced cutting recesses (9), which are formed in a forward, self-tapping end portion (7) of the threaded peripheral surface (6) adjacent to the insertion end surface (10) and which open axially into the insertion end surface (10). A plurality of circumferentially-spaced tissue-collecting and tissue-distributing grooves (17) are formed in a rear, non-self-tapping portion (8) of the threaded peripheral surface (6).
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: August 26, 2003
    Assignee: Astra Aktiebolag
    Inventors: Björn Albrektsson, Lars Carlsson, Magnus Jacobsson, Tord Röstlund, Stig Wennberg
  • Publication number: 20030060889
    Abstract: A prosthesis for replacement of a ball and socket joint in the human body. The prosthetic components comprise a plurality of separate parts which may be inserted through a hole in the femur of the patient and assembled and attached to the prepared acetabulum of the hip bone to form a cup-shaped first shell. A cup is also passed through the hole in the femur and attached to the first shell to form the socket portion of the joint. A shaft having a first end with a ball formed thereon is inserted in the hole through the femur so that the ball engages the cup for movement therein.
    Type: Application
    Filed: September 24, 2001
    Publication date: March 27, 2003
    Inventor: Imad Ed. Tarabishy
  • Publication number: 20020111692
    Abstract: A femoral stem for use with an artificial hip joint assembly having helical cuts formed in the shaft thereof. The helical cuts form a restoring force spring-like shock absorbing geometry which permits the rigid metal material to grossly conform to the elastic modulus of the patient's bone. This femoral stem reduces the shock loading and attending pain associated with activities, such as standing, walking, and descending stairs, which often plague hip replacement patients.
    Type: Application
    Filed: February 15, 2001
    Publication date: August 15, 2002
    Inventors: James D. Ralph, Stephen Tatar
  • Patent number: 6409768
    Abstract: Screw-based primary fixation of the prosthetic components within the medullary cavity solves the problem of micro-movements encountered in conventional press-fit cementless fixation. For a total hip prosthesis, the stem is fixed to the medial cortex of the proximal femur by the medial approach alone, obviating the need for drilling of the lateral cortex. The stem may be implanted using special drill guide instrumentation. Anchoring screws are locked into the stem of the femoral component, while self-cutting threads on the screw head engage the pre-drilled medial cortex. This novel fixation principle can also be applied to other joint prostheses, e.g. finger, shoulder, elbow and knee, as well as to dental and spinal implants.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: June 25, 2002
    Inventors: Slobodan Tepic, W. Andrew Hodge
  • Publication number: 20020049502
    Abstract: A bone prosthesis is provided which includes an implantable elongate stem member having a bore extending therethrough. The stem member has a proximal end and a distal end with at least one slot formed in the distal end. The slot extends along at least a portion of the stem member, in a longitudinal direction, from the distal end towards the proximal end to form at least two tines at the distal end of the stem. A bolt member is disposed within the bore of the stem member and has a proximal end and a distal end, wherein at least a portion of the bolt member proximate the distal end is threaded. An expander nut is disposed between the tines and is threadably matable with the distal end of the bolt member such that rotation of the bolt member in a first direction is effective to draw the expander nut towards the proximal end of the stem member to separate the tines at the distal end of the stem member.
    Type: Application
    Filed: December 14, 2001
    Publication date: April 25, 2002
    Inventors: Alfred F. DeCarlo, Hugh U. Cameron
  • Patent number: 6322591
    Abstract: An intramedullary nail system for use in all human and animal bones for healing fractures or lengthening bones, in particular for use in the femoral region, including an intramedullary nail as the base element, which can optionally be connected at its top and/or bottom end to at least one further implant component via connecting members (3, 4, 6, 10).
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: November 27, 2001
    Assignee: AAP Implantate AG
    Inventor: Uwe Ahrens
  • Patent number: 6190417
    Abstract: The present invention provides a femoral prosthesis to be utilized as an implant into a human femur to connect the coxa. The femoral prosthesis comprises a stem body to be inserted into a femur bone, a neck portion fixed integrally at the proximal portion of the stem body, a spherical head member having an opening to receive the neck potion, and a cross pin for fixing the stem body to the femur bone, wherein the stem body is formed with a pinnig hole through a proximal portion thereof corresponding to a greater trochanter of the femur bone, and the cross pin is in a unthreaded cylindrical shape and inserted into the pinning hole, both ends of the cross pin being projected out of the stem body to be engaged with the bone wall of the femur bone.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: February 20, 2001
    Assignee: Kyocera Corporation
    Inventors: Moritoshi Itoman, Kiyoshi Mabuchi, Noriyuki Ishida, Shingo Tamabuchi, Masaru Ueno
  • Patent number: RE43482
    Abstract: A bone stabilizing apparatus includes a stem member and an extension member, the stem member having a distal end for insertion within the intramedullary canal of a human humerus and the proximal end connected to the extension member. The extension member has radially directed threaded holes either pre-formed or created after the bone stabilizing apparatus is installed into the humerus. The threaded holes allow fixation of stabilizing screws with suture posts, or a washer structure to grip the surface of the bone and/or surrounding ligaments or muscle. A prosthetic or the natural humeral head can be attached to the extension member. In a preferred embodiment a guide structure directs the drill and stabilizing screws radially through the central axis of the extension member.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: June 19, 2012
    Assignee: Nuvana Medical Innovations, LLC
    Inventors: Edward John Mikol, Thomas John Chambers