Self-tapping Patents (Class 606/312)
  • Patent number: 10507051
    Abstract: A X-ray detectable bioabsorbable bone screw comprises a light-emitting element, a light-sensing element, a transparent inner encapsulant body, an outer covering body, and two conductive frames on which. An optically reflective surface is in contact and formed between the dome enclosing portion of the transparent inner encapsulant body and the outer encapsulant body. A portion of the light emitted by the light-emitting element is reflected to the light-sensing element through the optically reflective surface, and the other portion of the light emitted from the light-emitting element is directly emitting to the light-sensing element through the transparent inner encapsulant body. The present invention applies the optically reflective surface to minimize the overlapping area between the two conductive frames, and reduces the capacitance value, and increases the CMRR in a manner that the photo coupler of the present invention is able to meet the standard of electrical characteristics as required.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: December 17, 2019
    Assignee: MEDALL BIOTECH CO., LTD.
    Inventors: Haw-Ming Huang, Jy-Jiunn Tzeng, Chi-Hsien She, Yu-Ming Hsu
  • Patent number: 10292746
    Abstract: The invention provides a surgical tool (1), e.g. a hand-held tool, for inserting surgical implants in a patient's body, the tool comprising: a main body (2) extending along a longitudinal axis (X-X?) between firstly a working end (3) and secondly a proximal end (4), the main body (2) also presenting an outside surface (5) connecting the working end (3) to the proximal end (4); and a guide cannula (14) arranged within the main body (2) and extending between a distal orifice (15) opening to the outside of said main body (2) at the working end (3), and a rear orifice (16); said surgical tool (1) being characterized in that said rear orifice (16) opens out to the outside surface (5) of said main body (2), and in that said main body (2) presents longitudinal splines (25, 27, 28) projecting from said main body (2) in respective planes extending. radially relative to the longitudinal axis (X-X?). Surgical instrumentation.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: May 21, 2019
    Assignee: IN2BONES
    Inventors: Jean-Yves Paul Albert Coillard-Lavirotte, Daniel Edmond Boublil, Philippe Emmanuel D'Ingrado
  • Patent number: 10285744
    Abstract: A bone anchoring element (1) for anchoring an external device in a bone is described. A head (2) capable of connection to the external device is provided with a shaft (3) that can be anchored in a bone. A predetermined section of the shaft (3) has a bone thread (5). Moreover, the shaft (3) also has at least one bone thread-free surface (6,7; 11,12; 16,17; 21,22,23) that extends from a first end to a second end of the predetermined section essentially along the direction of the shaft axis. The bone anchoring element (1), thus provided, is pressed or soft-hammered into a hole (8, 28) previously generated in the bone and fixed in the bone by rotation by a predetermined angle. If the bone anchoring element has to be removed this can be achieved by unscrewing it in the standard fashion. The disclosure also describes methods for using the bone anchoring element.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: May 14, 2019
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Helmar Rapp
  • Patent number: 10092284
    Abstract: A suture anchor system and method including a suture anchor and a suture anchor drive. The suture anchor is positionable on a rod of the suture anchor drive. The rod defines an awl for forming a hole in a bone. The suture anchor drive further has an impactor for moving the suture anchor along the rod between a retracted position and an advanced position so as to implant the suture anchor in the bone with the awl positioned in the bone.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: October 9, 2018
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Nicolas Bouduban, Beat Lechmann, Philippe Gedet, Patrick Burki
  • Patent number: 9526549
    Abstract: A composite material bone screw comprising an embedded insert. The embedded insert may serve as a thread cutting tool by covering at least one cutting edge of the screw.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: December 27, 2016
    Assignee: Carbofix Orthopedics Ltd.
    Inventors: Mordechay Beyar, Oren Globerman
  • Patent number: 9173692
    Abstract: Composite orthopedic devices that facilitate spine stabilization, such as: bone screws, rods, plates, interbodies, and corpectomy cages are disclosed. They are designed to provide both strength and load carrying capabilities, while increasing bio-integration of the devices with the surrounding bone tissue. They are constructed of composite layers of allograft and/or autograft bone and a structural material, such as titanium alloy or carbon/graphite fiber composite. Cannulations within the device are loaded with a mixture of stem cells, particles of allograft and/or autograft bone, and bone growth factors, such as BMP-2. The cannulations are connected to the surface of the device via multiple fenestrations that provide pathways to supply the bone/stem cell mixture to the surface, allowing living bone tissue to grow and insure bio-integration.
    Type: Grant
    Filed: June 15, 2013
    Date of Patent: November 3, 2015
    Assignee: STC.UNM
    Inventor: Paul E. Kaloostian
  • Patent number: 9101427
    Abstract: A fixation component for a bone-supporting component of a bone implant, comprising a body including a core, and a head portion. A distal end of the component comprises an insert formed of a hard material, which covers a portion of the distal end, and acts a thread cutting tool. In some embodiments, the insert comprises a planar portion abutting against a material of the fixation component. In some embodiments, the fixation component is a screw, and the insert covers at least a portion of a cutting edge of the screw.
    Type: Grant
    Filed: July 4, 2013
    Date of Patent: August 11, 2015
    Assignee: Carbofix Orthopedics Ltd.
    Inventors: Oren Globerman, Mordechay Beyar
  • Patent number: 9011505
    Abstract: The invention relates to a self-tapping and self-boring osteosynthesis screw for compressive orthopaedic surgery, characterised in that, in the bone engagement regions, at both the distal portion (A1a) and at the proximal portion (A2a), the sum of the angles defining the outer taper of the shank (f) and the taper of the crest line of the screw thread pitch (P) is higher than 45°, and in that the leading portion (i.e. the most distal one) of each thread includes a plurality of cutting edges (AR) obtained by stock removal.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: April 21, 2015
    Assignee: Memometal Technologies
    Inventors: Bernard Prandi, Jean Lariviere, Mohammed R'Taimate
  • Patent number: 8915735
    Abstract: In an arrangement for obtaining reliable anchoring of a threaded implant (3) in dentine, a hole (2) is made in the bone substance. In the side wall (2b) of the hole it is possible to establish an internal threading which can cooperate with an external threading (3d) on the implant. The implant threading is arranged to force the bone substance out in essentially radial directions as a function of the extent to which the implant is screwed into the hole. The threading is arranged to effect greater forcing out of the bone substance at the outer parts of the hole than at the inner parts of the hole. The degree of forcing out is adapted in relation to the softness of the bone in order to achieve the reliable anchoring. Along at least part of the longitudinal direction of the implant, the implant threading can be given a non-circular configuration for the purpose of obtaining improved rotational stability in soft/weak bone.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: December 23, 2014
    Assignee: Nobel Biocare Services AG
    Inventors: Lennart Carlsson, Fredrik Engman, Roger Fromell, Lars Jörneus
  • Publication number: 20140257409
    Abstract: A threaded fastener for embedment into bone is disclosed. Threads are formed on cylindrical stock. The thread pattern features upper and lower surfaces. The upper surface includes (in section) two facets which intersect to form a “V” shaped contour and a lower surface which is undercut below an upper facet nearest a root of the fastener thread. The fastener includes a self-tapping cutter at a distal extremity and a driving head at its proximal extremity. The cylindrical stock contemplates two variants: it may be hollow from the proximal end to the self-tapping cutter or from the self-tapping cutter to its distal end. The self-tapping cutter is configured to feed bone shards into the hollow.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 11, 2014
    Inventor: Gary Jack Reed
  • Patent number: 8777969
    Abstract: Surgical fasteners, including tacks are disclosed for fastening a surgical mesh to underlying tissue during surgical procedures to repair body tissue, such as in hernia repair. Such tacks can include a head, a elongated body portion having a distal end and a proximal end, and an anchoring element on an outer surface of the body portion for inhibiting the removal of the tack from the mesh and body tissue.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: July 15, 2014
    Assignee: Covidien LP
    Inventor: Helmut Kayan
  • Patent number: 8771325
    Abstract: An orthopedic fastener rated to be received into a corresponding bone specimen. The corresponding bone specimen has an overall outer thickness from near cortex to far cortex. Preferably, but optionally, the corresponding bone specimen also has a predetermined bone hole preparation which includes a pilot hole through the near cortex and into the far cortex. The fastener itself comprises a plurality of cutting flutes on one end. The cutting flutes transition into a tapered male threaded portion. The tapered male threaded portion provides a plurality of self-tapping threads. The self-tapping threads taper from a minimum thread crest diameter Dmin proximal to the cutting flutes to a maximum thread crest diameter Dmax distal from the cutting flutes. The cutting flutes are further rated to ream the pilot hole, when provided, to a diameter of about Dmin.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: July 8, 2014
    Inventor: T. Hall Griffin
  • Publication number: 20140155943
    Abstract: The present invention relates to a bone implant device, comprising a body having a first part and an opposite second part, the first part and an opposite second part defining a longitudinal axis, the first part including an external thread extending from a cylindrical part to the distal end of the body, the external thread comprising a first thread part having a first radius measured from the longitudinal axis and a second thread part having a second radius measured from the longitudinal axis. The first radius is larger than the second radius, the first thread part is a cutting part, and the second thread part is a contact surface. The first part may include one or more cavities for storing bone fragments while the bone implant is in use.
    Type: Application
    Filed: June 29, 2012
    Publication date: June 5, 2014
    Inventor: Henrik Andersen
  • Publication number: 20140094859
    Abstract: A dual-start fastener is disclosed having two threads helically wound about its shaft. The thread tooth profile (in section) constitutes substantially parallel upper and lower facets on each thread flank. A first thread has a crest diameter greater than a second thread. A distal end of the fastener includes self-tapping cutters formed on the threads which force shards of bone to advance into shallow troughs adjacent the cutters for subsequent resorption by adjacent osseous tissue.
    Type: Application
    Filed: October 3, 2012
    Publication date: April 3, 2014
    Inventor: Gary Jack Reed
  • Publication number: 20140058460
    Abstract: An orthopedic structure includes a method for making a threaded fastener with thread geometry and leading edge geometry which provides greater precision during installation. Specifically, thread pitch and tooth profiles are independently variable. A leading portion of the fastener advances bone shards forward of the forward of the fastener to reduce insertion torque and prevent the shards from residing in the upstream tooth profile for better retention.
    Type: Application
    Filed: August 24, 2012
    Publication date: February 27, 2014
    Inventor: Gary Jack Reed
  • Publication number: 20140046384
    Abstract: A surgical bone screw (1) and driver (31), and a method for using them for repairing an osteotomy or fracture. The screw has a shaft having a head (5) at its proximal end, screw threads (3) at its distal end and a compression member (7) between the head and the screw threads. In an embodiment, the threads are self-tapping and self-drilling, the head is polygonal, and the sides of the polygon are convex. The driver turns the screw until the threads cross a fracture site and the compression member contacts the proximal bone fragment. The threads and compression member draw the fragments together and leaves the head entirely clear of the bone surface. The screw is removed through a small incision. Tilting the driver to allow the socket to engage an inwardly extending lower portion of the head permits the driver to lift the screw out of the bone.
    Type: Application
    Filed: October 15, 2013
    Publication date: February 13, 2014
    Inventor: Michael H. Horwitz
  • Publication number: 20140012335
    Abstract: Disclosed is a self-tapping bone screw, in particular for use as a compression screw or a locking screw for an implant. The bone screw has screw shank, which has a front tip, a cutting region, an intermediate region, and a rear head region. In a transition region including mutually adjoining parts of the cutting region and the intermediate region, the root diameter of the screw shank in the cutting region is greater than the root diameter of the screw shank in the intermediate region, and the outside diameter of the screw shank is constant.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 9, 2014
    Applicant: STRYKER TRAUMA AG
    Inventors: Alexis Christen, Zeljko Markovic
  • Publication number: 20140012334
    Abstract: A multiple zone bone fastener includes a head attached to an elongated shaft with a leading edge. The elongated shaft has a first zone, a second zone and a third zone, such that the second zone is disposed between first and third zones. The shaft has a continuous helical thread along the length of the first, second and third zones wherein the distance between the threads in the second zone is twice the distance between the threads in the first and second zones.
    Type: Application
    Filed: July 3, 2012
    Publication date: January 9, 2014
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventors: Rex W. Armstrong, Rodney R. Ballard
  • Publication number: 20130338722
    Abstract: A compression bone screw (100) comprises a shank (110), a first element (120) and a second element (130). The shank (110) has longitudinally opposing first and second shank portions (111, 112). The first shank portion (111) is externally threaded with a first shank thread (113). The first element (120) is threadingly mounted on the first shank portion (111) by way of a first element internal thread (122) threadingly engaging the first shank thread (113). The first element (120) is externally threaded with a first element external thread (123). The second element (130) is mounted on, or integrally formed with, the second shank portion (112). The second element (130) is externally threaded with a second element external thread (133). The second element external thread (133) and the first element external thread (123) are like-handed.
    Type: Application
    Filed: July 7, 2011
    Publication date: December 19, 2013
    Inventor: Matthew Adam Yalizis
  • Publication number: 20130331895
    Abstract: A surgical device of a drill/driver with bit recognition to set a desired application mode and a method of utilization thereof is provided. Various operating modes of the drill/driver are automatically set by a sensor which recognizes the bit applied to the drill/driver. A method of utilizing the drill/driver allows the drill driver to apply surgical screws at very high speeds while automatically preventing excessive torque levels that would strip out the surgical screw from the patient's bone.
    Type: Application
    Filed: August 13, 2013
    Publication date: December 12, 2013
    Applicant: BIOMET MICROFIXATION, LLC
    Inventors: Saddy R. Garcia, Bradley Winterroth, Ryan Nicholas Luby, Larry Miller, Christopher C. Dyer, Benjamin J. Gray, Allan J. Meredith
  • Publication number: 20130296952
    Abstract: A fixation component for a bone-supporting component of a bone implant, comprising a body including a core, and a head portion. A distal end of the component comprises an insert formed of a hard material, which covers a portion of the distal end, and acts a thread cutting tool. In some embodiments, the insert comprises a planar portion abutting against a material of the fixation component. In some embodiments, the fixation component is a screw, and the insert covers at least a portion of a cutting edge of the screw.
    Type: Application
    Filed: July 4, 2013
    Publication date: November 7, 2013
    Inventors: Oren GLOBERMAN, Mordechay BEYAR
  • Publication number: 20130237813
    Abstract: A composite material bone screw comprising an embedded insert. The embedded insert may serve as a thread cutting tool by covering at least one cutting edge of the screw.
    Type: Application
    Filed: March 28, 2013
    Publication date: September 12, 2013
    Applicant: CARBOFIX ORTHOPEDICS LTD.
    Inventors: MORDECHAY BEYAR, OREN GLOBERMAN
  • Publication number: 20130231708
    Abstract: A bone screw and method of inserting a bone screw into a bone is disclosed. In one example, the bone screw includes a tip segment for creating a starter hole in the bone. A pilot segment is located proximally of the tip segment for creating a pilot hole in the bone after creation of the starter hole. A threaded segment is located proximally of the pilot segment for fixedly securing the bone screw in the bone. A head is located proximally of the threaded segment for allowing a surgical rod to be fixedly secured to the bone screw.
    Type: Application
    Filed: April 8, 2013
    Publication date: September 5, 2013
    Applicant: WARSAW ORTHOPEDIC, INC.
    Inventor: Anthony J. Melkent
  • Patent number: 8414629
    Abstract: An orthopedic fastener rated to be received into a corresponding bone specimen. The corresponding bone specimen has (1) an overall outer thickness from near cortex to far cortex in a predetermined rated range of outer bone thicknesses, and (2) a predetermined bone hole preparation including an entry portion in the near cortex. The entry portion has a predetermined minimum entry diameter. The fastener provides a tapered portion. When the fastener is operably secured into the far cortex of a bone thickness for which it is rated to be received, the tapered portion of the fastener contacts the entry portion in the near cortex so as to impart no more than about 0.2 mm of radial preload into the bone surrounding the entry portion.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: April 9, 2013
    Inventor: T. Hall Griffin
  • Patent number: 8409261
    Abstract: An orthopedic fastener rated to be received into a corresponding bone specimen. The corresponding bone specimen has a predetermined bone hole preparation including a tapered female threaded section. Threads on the tapered female threaded section have a pre-selected thread profile. The fastener itself comprises a male tapered threaded portion. Threads on the male tapered threaded portion are rated to mate, according to the pre-selected thread profile, with corresponding threads on the tapered female threaded section. The pre-selected thread profile has a predetermined thread geometry. The thread geometry is predetermined so that, when the male tapered threaded portion on the fastener is fully engaged in the tapered female threaded section on the bone hole preparation, a predetermined further tightening of the fastener imparts a corresponding predetermined radial preload on bone tissue surrounding the tapered female threaded section.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: April 2, 2013
    Inventor: T. Hall Griffin
  • Publication number: 20130022942
    Abstract: A bone implant includes a head and a core body extending from the head to a tip. Multiple osteotomy blades extend outwardly from at least a portion of the core body, arranged end-to-end to form a spiral thread. The implant, and particularly the osteotomy blades, are configured to self-osteotomize and channel cut bone between the blades and facilitate bone growth and grafting and integration of the implant to the bone.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 24, 2013
    Inventor: Parsa T. Zadeh
  • Patent number: 8317846
    Abstract: A fracture fixation device is described for fixing a bone having a near cortex and a far cortex, comprising a shaft portion configured to span a distance between the near cortex and the far cortex of the bone; a head portion adjoining the shaft portion and providing for engagement of the device with a bone plate, wherein the head portion is integral with the shaft portion; and a threaded front section for engagement of the device with the far cortex of the bone, wherein the device permits motion of the shaft portion relative to the near cortex.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: November 27, 2012
    Assignee: Apex Biomedical Company, LLC
    Inventor: Michael Bottlang
  • Patent number: 8197523
    Abstract: A bone screw having a head portion and an adjoining shaft portion is described. The shaft portion has a front, a mid, and a neck section, where at least two of the sections having complementary features and/or attributes to facilitate positive-locking, but flexible engagement of the bone screw to a bone.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: June 12, 2012
    Assignee: Apex Biomedical Company, LLC
    Inventor: Michael Bottlang
  • Publication number: 20110295319
    Abstract: A bone screw, such as a pedicle screw, comprises en elongate structure having a head, an anchoring portion or tip distal from the head, and an open, helical body extending there-between. In one embodiment, the invention provides a screw having an anchoring portion, which engages bone and which includes a means for engaging a driver or the like whereby the screw is driven into the bone by the anchoring portion. A method of driving a screw is also provided.
    Type: Application
    Filed: August 14, 2009
    Publication date: December 1, 2011
    Applicant: KINETIC SPINE TECHNOLOGIES INC.
    Inventors: Stephan J. Duplessis, John R. Hurlbert, Lali Sekhon
  • Publication number: 20110137354
    Abstract: A bone screw includes a tubular body including a wall having a bone thread in at least a portion of an outer portion of the wall, an open first end and an open second end. A plurality of cutting teeth is provided at the open first end. An engagement structure is provided at the second end for engagement with a screwing-in tool. The wall in the vicinity of the plurality of cutting teeth is thicker in a radial direction than the wall adjacent to the plurality of cutting teeth.
    Type: Application
    Filed: December 2, 2010
    Publication date: June 9, 2011
    Inventors: Lutz Biedermann, Wilfried Matthis, Jürgen Harms
  • Publication number: 20110125197
    Abstract: An orthopedic fastener rated to be received into a corresponding bone specimen. The corresponding bone specimen has (1) an overall outer thickness from near cortex to far cortex in a predetermined rated range of outer bone thicknesses, and (2) a predetermined bone hole preparation including an entry portion in the near cortex. The entry portion has a predetermined minimum entry diameter. The fastener provides a tapered portion. When the fastener is operably secured into the far cortex of a bone thickness for which it is rated to be received, the tapered portion of the fastener contacts the entry portion in the near cortex so as to impart no more than about 0.2 mm of radial preload into the bone surrounding the entry portion.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 26, 2011
    Inventor: T. Hall Griffin
  • Publication number: 20110125199
    Abstract: An orthopedic fastener rated to be received into a corresponding bone specimen. The corresponding bone specimen has an overall outer thickness from near cortex to far cortex. Preferably, but optionally, the corresponding bone specimen also has a predetermined bone hole preparation which includes a pilot hole through the near cortex and into the far cortex. The fastener itself comprises a plurality of cutting flutes on one end. The cutting flutes transition into a tapered male threaded portion. The tapered male threaded portion provides a plurality of self-tapping threads. The self-tapping threads taper from a minimum thread crest diameter Dmin proximal to the cutting flutes to a maximum thread crest diameter Dmax distal from the cutting flutes. The cutting flutes are further rated to ream the pilot hole, when provided, to a diameter of about Dmin.
    Type: Application
    Filed: October 12, 2010
    Publication date: May 26, 2011
    Inventor: T. Hall Griffin
  • Publication number: 20110125198
    Abstract: An orthopedic fastener rated to be received into a corresponding bone specimen. The corresponding bone specimen has a predetermined bone hole preparation including a tapered female threaded section. Threads on the tapered female threaded section have a pre-selected thread profile. The fastener itself comprises a male tapered threaded portion. Threads on the male tapered threaded portion are rated to mate, according to the pre-selected thread profile, with corresponding threads on the tapered female threaded section. The pre-selected thread profile has a predetermined thread geometry. The thread geometry is predetermined so that, when the male tapered threaded portion on the fastener is fully engaged in the tapered female threaded section on the bone hole preparation, a predetermined further tightening of the fastener imparts a corresponding predetermined radial preload on bone tissue surrounding the tapered female threaded section.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 26, 2011
    Inventor: T. Hall Griffin
  • Publication number: 20110106157
    Abstract: The present invention is generally directed to a unique bone screw which, in one form, may be used to engage with and attach an implant to bone or bony tissue. In one embodiment, a bone screw includes an elongate shank extending along a longitudinal axis from an enlarged proximal head portion to a distal tip. The elongate shank includes a first portion having a first non-tapered, linear external profile and a second portion having a first tapered external profile that increases toward the proximal head portion. The second portion is positioned between the first portion and the head portion and terminates distally of the proximal head portion. In one form of this embodiment, the bone screw can be advanced through a passage of an implant such that an interference fit is provided between the bone screw and the implant.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 5, 2011
    Applicant: WARSAW ORTHROPEDIC, INC.
    Inventors: Anthony J. Melkent, Thomas A. Carls, Lindsey G. Waugh
  • Publication number: 20110040339
    Abstract: This invention relates to a system and a method for affixing soft tissue to bones. The system for fixing soft tissue within a bone tunnel comprising a first fixation member having a proximal end and a distal end and a bore extending from said proximal end to said distal end, said first fixation member is adapted for insertion against a first portion of a soft tissue positioned within a bone tunnel, a second portion of said soft tissue emerging from said bone tunnel; a second fixation member adapted to engage said bore of said first fixation member, having means for restraining disengagement therewith and a proximal end; and a third fixation member adapted to engage said second portion of said soft tissue, having means for coupling onto said proximal end of said second fixation member and restraining disengagement therewith.
    Type: Application
    Filed: August 12, 2010
    Publication date: February 17, 2011
    Inventors: Daniel J. Solomon, Matthew T. Provencher, Colin Gregersen
  • Patent number: 7819905
    Abstract: A self-drilling bone screw includes a screw body centered on a longitudinal axis and having an external thread winding. The bone screw has a head portion at one end of the screw body and a drill point at the other end. The drill point has two blades, each having a cutting lip and a primary relief surface trailing from the cutting lip. The two blades defining a flute between them. The flute has an opening to the side of the screw body, which opening spans an obtuse angle, such as about 120°, about the longitudinal axis. The primary relief surfaces have a lip relief angle of about 30°. The drill point has a point angle of about 100°.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: October 26, 2010
    Assignee: Zimmer Spine, Inc.
    Inventors: Gene Newcomb, Craig Hahne, Jason Piehl, Kevin V. Guenther
  • Patent number: 7799062
    Abstract: A screw fastener for attachment to an orthopedic component such as an orthopedic plate for use in connection with fracture fixation, joint reconstruction or spinal stabilization or fusion is disclosed as having a shank with at least two different shank diameters, one in a plate engaging portion of the shank and one in the bone or other component engaging portion of the shank. At least two of the different shank diameters on the shank include threads, the threads on the two different diameter portions each having substantially the same thread height and pitch. A plate having a threaded aperture, or an adapter having a threaded aperture, is sized such that the threads of the smaller diameter shank portion engage and cooperate with the internal threads of the aperture to correctly align the screw fastener and the implant as the screw fastener is threaded through the implant.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: September 21, 2010
    Assignee: Stryker Trauma S.A.
    Inventor: Yves Crozet
  • Patent number: 7794483
    Abstract: A compression bone screw is described, with a shank having two opposite shank sections along its axial extent, a first thread being connected in a rotationally fixed manner to the shank in the region of the first shank section. The shank has at least one latching element for rotatably coupling a threaded component bearing a second thread to the second shank section. The invention furthermore relates to a screwdriver blade for the compression bone screw.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: September 14, 2010
    Assignee: Stryker Leibinger GmbH & Co. KG
    Inventor: Felix Capanni
  • Publication number: 20100211118
    Abstract: The invention relates to a self-tapping bone screw, in particular for use as a compression screw or a locking screw for an implant. The bone screw has screw shank, which has a front tip, a cutting region, an intermediate region and a rear head region. In a transition region comprising mutually adjoining parts of the cutting region and the intermediate region the root diameter of the screw shank in the cutting region is greater than the root diameter of the screw shank in the intermediate region, and the outside diameter of the screw shank is constant.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 19, 2010
    Applicant: STRYKER TRAUMA AG
    Inventors: Alexis Christen, Zeljko Markovic
  • Patent number: 7771457
    Abstract: The present invention relates to an orthopedic plate and screw system and instruments for surgical fixation of a small bone or bones. The plate facilitates three dimensional contouring to provide for a variety of applications and to accommodate individual variation in bone shape. The plate has a modified x shape including a central trunk portion including one or more screw holes along a longitudinal axis and a set of divergent upper and an oppositely extending set of divergent lower arms, each arm including screw holes which are placed at a radially equal distance but which diverging asymmetrically from the longitudinal axis relative to its paired upper or lower mate. The screws of the system are self-starting, self-tapping screws including the option of partial or full cannulation.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: August 10, 2010
    Assignee: Orthohelix Surgical Designs, Inc.
    Inventors: David B. Kay, Lee A. Strnad, Dustin Ducharme, G. Martin Wynkoop
  • Publication number: 20100190138
    Abstract: The invention relates to bone implants, namely screw-type implants and, more particularly, to a self tapping dental implant having at least two helical grooves running in opposite directions around the implant.
    Type: Application
    Filed: January 26, 2010
    Publication date: July 29, 2010
    Applicant: Intra-Lock International, Inc.
    Inventor: Thierry Giorno
  • Publication number: 20100094425
    Abstract: This disclosure presents methods and devices for treating a tear, rent, incision, defect, aperture or delamination of the annulus fibrosus of an intervertebral disc. The methods and devices can employ fixation delivery apparatuses, fixation apparatuses, patch delivery tools and patches positioned, at least in part, in or on aspects of an intervertebral disc for treatment of the intervertebral disc or its components. In some aspects, these techniques include the use of this includes a fixation apparatus that includes at least one bone anchor connected to at least one disc anchor by a shortenable elongate member.
    Type: Application
    Filed: September 3, 2009
    Publication date: April 15, 2010
    Applicant: Anulex Technologies, Inc.
    Inventors: Ishmael Bentley, Matthew M. Burns, Joseph C. Cauthen, III, Brian L. Dukart, Rodney L. Houfburg, Lawrence W. Wales, Bradley J. Wessman
  • Publication number: 20100057138
    Abstract: A bone fixation system includes a bone plate and a bone screw having a threaded head. The inner surface of the bone plate is adapted for facing a bone surface on which the plate is mounted. The outer surface of the bone plate faces away from the bone surface. A through opening extends from the inner surface to the outer surface of the plate wherein the through opening comprises a guiding portion and a blocking portion. The guiding portion of the opening is provided with a guiding thread for guiding a thread of a shaft of the bone screw. The blocking portion is provided with a blocking thread for blocking a thread of the head of the bone screw. The blocking thread has a larger diameter than the guiding thread and the guiding portion is located closer to the inner bone plate surface than the blocking portion.
    Type: Application
    Filed: May 27, 2009
    Publication date: March 4, 2010
    Applicant: Stryker Trauma SA
    Inventors: Beat Mürner, Tobias Bluechel
  • Patent number: 7643867
    Abstract: This document discusses, among other things, fiducial marker devices, tools, and methods. One example illustrates a combined computed tomography (CT) imagable fiducial locator head, an integral bone screw, and an integral divot for receiving a positioning wand of an image-guided surgical (IGS) workstation. A further example includes a fluid/gel-absorbing coating or cover into which a magnetic resonance (MR) imagable fluid is introduced, thereby permitting both CT and MR imaging. Protective caps and collars may be used to protect the fiducial marker from mechanical impact and/or to guide the fiducial marker during affixation. A bull's-eye or other template is used to select a center of a substantially spherical fiducial marker head on an image, such as for use during patient registration.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: January 5, 2010
    Assignee: Medtronic, Inc.
    Inventors: Matthew S. Solar, Thomas L. Bridges, David M. Lee, Mark Stephen Freas
  • Publication number: 20090248089
    Abstract: An assembly for the fixation of a spinal facet joint, including an outer shank, an inner shank and a tip, such that rotation of the inner shank with respect to the outer shank causes the tip to move into the outer shank. Movement of the tip causes deformation of the distal end of the outer shank such that the distal end of the outer shank is larger in diameter than the hole through which it was inserted, said deformation causing increased compression and reduced chance of device loosening.
    Type: Application
    Filed: March 25, 2009
    Publication date: October 1, 2009
    Inventors: Marc C. Jacofsky, A. Joshua Appel
  • Publication number: 20090048606
    Abstract: An improved guide system and method permits a user to insert a fixation device, such as a pin, screw, wire and/or the like, into a bone portion. A guide system may comprise a handle portion and a body portion, wherein the body portion comprises one or more channels configured to facilitate placement and insertion of a fixation device.
    Type: Application
    Filed: June 27, 2008
    Publication date: February 19, 2009
    Applicant: FXDEVICES LLC
    Inventors: Kishore Tipirneni, Wayne Vassello
  • Publication number: 20080234762
    Abstract: A fixation device for use in bone, such as a bone screw, includes a first end and a second end. The first portion may be manufactured from a short-term resorbable material, and the second portion may be manufactured from a non-resorbable or long term resorbable material. The first portion may comprise a tip capable of self-tapping a bone. The second portion may include at least one thread formed on the outer surface thereof and a head portion formed to mate with a driver.
    Type: Application
    Filed: March 6, 2007
    Publication date: September 25, 2008
    Applicant: ZIMMER TECHNOLOGY, INC.
    Inventors: Micah Forstein, Kai Zhang