Externally Threaded Head Patents (Class 606/271)
  • Patent number: 10512494
    Abstract: A pedicle screw has quadruple screw threads capable of moving forward a long distance in a bone upon rotation. For a screw to be embedded in a dense cortical bone of a vertebra, the threads include relief screw threads, to strongly couple with bone tissue in the cortical bone. For a screw to be embedded in a cancellous bone of the vertebra, two lines of threads (odd or even) include relief screw threads while the other two lines of threads include intaglio screw threads, thereby more strongly coupling with relatively soft cancellous bone tissue. The threads are provided in the whole pedicle screw, to move forward at 4-fold higher speed than a single screw thread, and intaglio screw threads are formed at a position to which the cancellous bone is fixed, so that cancellous bone tissues penetrate between the intaglio threads, thereby strongly coupling to the cortical and cancellous bones.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: December 24, 2019
    Assignee: MANTIZ LOGTECH CO., LTD.
    Inventors: Hong Won Yoon, Kwang Hoon Lee
  • Patent number: 10390865
    Abstract: An orthopedic locking screw is be configured to be retained inside the bore of an orthopedic implant provided as part of an orthopedic fastening system. The orthopedic locking screw includes a shaft extending axially, a drive member, and a casing secured around an outer surface of the shaft. The casing is formed of a plastically deformable material. The casing has an outer cross-sectional width that is larger than a cross-sectional width of the shaft adjacent the casing. When operably disposed in the bore, an axial and/or radial press-fit pressure is formed between the casing and the bore. A method of securing an orthopedic screw in a bore of an orthopedic implant is provided, in which the shaft is rotated to operably engage the casing to the bore to achieving a deformable press-fit of the casing against the bore.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: August 27, 2019
    Assignee: Stryker European Holdings I, LLC
    Inventors: Ole Prien, Thomas Amirov
  • Patent number: 10258390
    Abstract: A device for placing a receiving part of a bone anchoring device onto a head of a bone anchoring element includes a holding portion, a collet configured to be held by the holding portion, the collet having a tubular body extending along a longitudinal axis, and a distal end portion configured to be flexibly expanded and compressed in a radial direction, and a plunger configured to be positioned in the collet. The collet is movable axially relative to the plunger between a first position wherein the distal end portion of the collet is configured to have a first width in a first radial direction and the plunger prevents the distal end portion from assuming a width less than the first width, and a second position wherein the distal end portion of the collet is radially compressible to a second width that is less than the first width.
    Type: Grant
    Filed: March 11, 2015
    Date of Patent: April 16, 2019
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Wilfried Matthis, Dimosthenis Dandanopoulos, Timo Biedermann
  • Patent number: 10194952
    Abstract: Embodiments of the present invention provide an implant having a protrusion. The protrusion aids in the insertion and placement of the implant as well as the spinal fixation element. In certain embodiments the protrusion may be configured as a guide for the insertion of the spinal fixation element as well as closure mechanisms for connecting the spinal fixation element to the implant.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: February 5, 2019
    Assignee: DEPUY SYNTHES PRODUCTS, INC.
    Inventors: Christopher Lawrence Ramsay, Sara Dziedzic, Michael Mahoney
  • Patent number: 10172648
    Abstract: A bone screw assembly includes an anchor portion and a head portion, such as a rod-receiving portion, movably mounted to the anchor portion to allow for controlled angulation between the anchor portion and the head portion. The anchor portion is pivotable in one or more selected directions about an axis relative to the head portion. A restriction member, which may be a rod seat, prevents the anchor portion from pivoting in one or more different directions about another axis relative to the head portion and/or a spinal fixation element received in the head portion. The restriction member may be inserted in the head portion to control direction that the anchor portion pivots relative to the head portion. The restriction member may also serve as a compression member and/or rod seat for seating a spinal rod coupled to the bone screw assembly.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: January 8, 2019
    Assignee: Medos International Sarl
    Inventors: Nam T. Chao, Simon Siu, Ronald Sacher, Jerold P. Gurley, Randal Betz, Peter O. Newton
  • Patent number: 10064659
    Abstract: A bone anchoring device includes a bone anchoring element with a spherical segment-shaped head, a receiving part configured to couple a rod to the bone anchoring element, and having a top end, a bottom end, a first passage at the bottom end with a first longitudinal axis, and a second passage at the top end with a second longitudinal axis that intersects the first longitudinal axis, a compression element, and a locking element. The receiving part also has a recess for the rod, the recess extending from the top end towards the bottom end and having a bottom that extends along an axis that is perpendicular to the second longitudinal axis. The receiving part or the compression element further has a seat. The compression element is configured to move along the first longitudinal axis while the locking element is configured to move along the second longitudinal axis.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: September 4, 2018
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO., KG
    Inventors: Lutz Biedermann, Wilfried Matthis
  • Patent number: 10058367
    Abstract: A coupling assembly for coupling a rod to a bone anchoring element includes a receiving part having a first end, a second end, a recess having a bottom for receiving the rod, and an accommodation space having an opening at the second end of the receiving part for accommodating a head of the bone anchoring element, and a retainer element configured to be inserted into the receiving part from the first end and to hold at least part of the head, the retainer element having a first portion and a spring portion compressible in an axial direction attached to the first portion. When the retainer element is in the accommodation space in a first position, the spring portion extends in the axial direction from the first portion of the retainer element to an axial position between the first end of the receiving part and the bottom of the recess.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: August 28, 2018
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Achim Sch√ľnemann, Dimosthenis Dandanopoulos
  • Patent number: 9962193
    Abstract: A bone anchoring device includes an anchoring element having a shaft for anchoring in the bone and a head, a receiving part formed in one piece, and a pressure element formed in one piece. The receiving part has a seat for receiving the head and an outer channel for receiving a rod to be connected to the anchoring element, which is pivotable with respect to the receiving part and can be fixed at an angle by exerting pressure via the pressure element onto the head. The pressure element is movable in the receiving part and includes an inner channel for receiving the rod and a spring element that engages a portion of the receiving part via a detent connection so that the pressure element can be held in a position that allows pivoting of the anchoring element. The spring element is formed by at least a first portion of one of two side walls forming the inner channel, the first portion being spaced apart from a second portion of the one side wall by a slot.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: May 8, 2018
    Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
    Inventors: Lutz Biedermann, Martin Meer
  • Patent number: 9833263
    Abstract: Bone anchor assemblies are disclosed herein that include one or more features for indicating the relative positioning of the receiver member and the shank, or for selectively maintaining the receiver member and the shank in a fixed relative position. For example, the head of the shank can include a surface feature that interacts with a drag ring to provide tactile or audible feedback when the shank is positioned at a particular orientation with respect to the receiver member. By way of further example, the head of the shank and a compression cap disposed in the receiver member can each include engagement features that cooperate to allow for selective locking of the orientation of the shank with respect to the receiver member.
    Type: Grant
    Filed: April 13, 2015
    Date of Patent: December 5, 2017
    Assignee: Medos International Sarl
    Inventors: Thibault Chandanson, Frank Spratt, Ernest Quintanilha, Philip Cormier
  • Patent number: 9808292
    Abstract: A polyaxial bone screw having a bone implantable shank, a head and a retaining ring. The retaining ring includes an outer partial hemispherical surface and an inner bore with radially extending channels and partial capture recesses. The shank includes a bone implantable body with an external helical wound thread and an upwardly extending capture structure. The capture structure includes at least one spline which extends radially outward and has a wedged surface that faces radially outward therefrom. The capture structure operably passes through a central bore of the retaining ring while the spline passes through a suitably shaped channel so that the spline becomes positioned above the head at which time the shank is rotated appropriately and the shank is drawn back downwardly so that the spline engages and seats in the capture recess.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: November 7, 2017
    Inventor: Roger P. Jackson
  • Patent number: 9743957
    Abstract: A polyaxial bone screw assembly includes a threaded shank body having an upper portion, a receiver member or head, a retaining and articulating structure, and a pressure insert disposed between the shank upper portion and a rod. The receiver has a U-shaped cradle defining a channel for receiving a spinal fixation rod and a receiver cavity. The retaining and articulating structure attaches to the shank and rotates with the shank in the cavity during positioning. The pressure insert presses upon the shank upper portion and not the retaining and articulating structure.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: August 29, 2017
    Inventor: Roger P. Jackson
  • Patent number: 9737346
    Abstract: A reduction sleeve for facilitating insertion of a spinal rod into a rod-receiving channel formed in a bone fixation element. The reduction sleeve may include a through-bore sized and configured to receive the bone fixation element and a substantially transverse channel sized and configured to receive the spinal rod. The channel being substantially aligned with the rod-receiving channel formed in the bone fixation element so that, once the bone fixation element has been inserted into the reduction sleeve, the spinal rod can pass through the aligned channels. The reduction sleeve may also include at least one break-off point or region for facilitating breaking and removal of the reduction sleeve once the spinal rod has been clamped into the rod-receiving channel of the bone fixation element.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: August 22, 2017
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Brian Dec, David S. Rathbun
  • Patent number: 9687284
    Abstract: A locking peg includes a head and a shaft. The head is at the proximal end of the locking peg, and a shaft extends distally from the head to a distal end of the locking peg. The shaft has a threaded proximal portion and an unthreaded distal portion. A length of the unthreaded distal portion of the shaft is greater than a length of the threaded proximal portion of the shaft. When the locking peg is inserted into a bone through a bone plate, the threaded proximal portion of the shaft extends into the bone. This extended threading provides additional axial force to help explant the locking peg during removal of the locking peg.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: June 27, 2017
    Assignee: Stryker European Holdings I, LLC
    Inventors: Fernando Pancheco, Martin Knape, Egon Hermann, Kevin Soldan
  • Patent number: 9572600
    Abstract: A bone anchoring device includes an anchoring element having a shaft for anchoring in the bone and a head, a receiving part formed in one piece, and a pressure element formed in one piece. The receiving part has a seat for receiving the head and an outer channel for receiving a rod to be connected to the anchoring element, which is pivotable with respect to the receiving part and can be fixed at an angle by exerting pressure via the pressure element onto the head. The pressure element is movable in the receiving part and includes an inner channel for receiving the rod and a spring element that engages a portion of the receiving part via a detent connection so that the pressure element can be held in a position that allows pivoting of the anchoring element. The spring element is formed by at least a first portion of one of two side walls forming the inner channel, the first portion being spaced apart from a second portion of the one side wall by a slot.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: February 21, 2017
    Assignee: Biedermann Technologies GmbH & Co. KG
    Inventors: Lutz Biedermann, Martin Meer
  • Patent number: 9289243
    Abstract: The present application discloses methods for treating spinal deformities. One embodiment includes inserting an elongated corrective member into the patient. During insertion, the corrective member is operatively attached to a first vertebral member that applies a first corrective force to correct a first vertebral member alignment. The corrective member is further inserted into the patient and subsequently operatively attached to a second vertebral member that applies a second corrective force to correct a second vertebral member alignment. The corrective member is further inserted and subsequently operatively attached to a third vertebral member that applies a third corrective force to correct a third vertebral member alignment. The embodiment may further include operatively attaching the corrective member to additional vertebral members to correct further misalignment. In one embodiment, a second member is attached to the vertebral members after they have been aligned to maintain the alignment.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: March 22, 2016
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Mark Benedict Dekutoski, John Durward Pond, Jr.
  • Patent number: 9254150
    Abstract: A bone anchoring device includes an anchoring element having a shaft for anchoring in the bone and a head, a receiving part formed in one piece, and a pressure element formed in one piece. The receiving part has a seat for receiving the head and an outer channel for receiving a rod to be connected to the anchoring element, which is pivotable with respect to the receiving part and can be fixed at an angle by exerting pressure via the pressure element onto the head. The pressure element is movable in the receiving part and includes an inner channel for receiving the rod and a spring element that engages a portion of the receiving part via a detent connection so that the pressure element can be held in a position that allows pivoting of the anchoring element. The spring element is formed by at least a first portion of one of two side walls forming the inner channel, the first portion being spaced apart from a second portion of the one side wall by a slot.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: February 9, 2016
    Assignee: Biedermann Technologies GmbH & Co. KG
    Inventors: Lutz Biedermann, Martin Meer
  • Patent number: 9186191
    Abstract: A coupling device for securing an elongate member to the spine is provided. The coupling device comprises a compressible inner member that secures an anchor member therein when the inner member is axially shifted within an outer member. Structures are provided to prevent disassembly of the anchor and coupling device prior to locking of the elongate member.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: November 17, 2015
    Assignee: PIONEER SURGICAL TECHNOLOGY, INC.
    Inventors: Gregory Berrevoets, Scott J. Perrow
  • Patent number: 9119673
    Abstract: In a rod fixation system of the type used to treat various spinal conditions, the same fastener is used to lock both a polyaxial screw and a rod in position. A spinal correction device according to the invention, adapted for use with a rod and a polyaxial screw having a ball-shaped head and a threaded end, comprises a head-body and a cap. The head-body includes a lower internal cavity to receive the ball-shaped head of the screw, an upper bore to receive a fixation rod therethrough, and an upper end configured to receive the cap. The head-body and the cap are configured such that a first rotation of the cap locks the polyaxial screw in position, and a second rotation of the cap locks the rod in position. In the preferred embodiment, the head-body includes one or more gaps to facilitate flexion of the head-body as a rotational torque is placed on the cap. The gap or gaps may be horizontal, vertical or other angles relative to the axis of the entrapped rod.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: September 1, 2015
    Assignee: US Spine, Inc.
    Inventors: Trace R. Cawley, John R. Pepper, Doris Blake
  • Patent number: 9011449
    Abstract: A pedicle screw and rod fixation assembly including a pair of opposing tabs having a proximal end and a distal end, the pair of opposing tabs being coupled to one another about the distal end thereof by a screw head member, a decoupling mechanism for decoupling the pair of opposing tabs from the screw head member, a rod receiving slot between the pair of opposing tabs, and a sliding member configured for coupling to the pair of opposing tabs. The sliding member and the pair of opposing tabs are configured for allowing movement of the sliding member distally along the pair of opposing tabs and preventing movement of the sliding member proximally along the pair of opposing tabs.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: April 21, 2015
    Inventor: Scott Cochran
  • Publication number: 20140336709
    Abstract: A pedicle screw system includes a multi-threaded bone fastener configured with a constant pitch and a placement tower assembly for delivery of the bone fastener.
    Type: Application
    Filed: March 13, 2014
    Publication date: November 13, 2014
    Inventors: Eugene E. Avidano, Walter Scott Hill, Brandon B. Arthurs
  • Patent number: 8821506
    Abstract: A bone screw comprises an interior channel and at least one opening extending from the interior channel to an exterior of the screw shaft. A head is connected to the screw shaft. A fluid delivery probe comprises an interior channel. The fluid delivery probe is locked to the head so that the fluid delivery probe does not separate from the head under extremely high pressures when a fluid is pumped through the fluid delivery probe and into the screw shaft. Also, a leak-free seal is formed between the fluid delivery probe and the screw shaft so that the leak-free seal does not leak under extremely high pressures when a fluid is pumped through the fluid delivery probe and into the screw shaft.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: September 2, 2014
    Inventor: Michael David Mitchell
  • Publication number: 20140172017
    Abstract: Apparatus and devices for adding an additional spinal construct in a patient are disclosed. In one arrangement the additional spinal construct extends an existing spinal construct ipsilaterally with an inline rod connector in a minimally invasive or preferably, percutaneous procedure. In another arrangement, the ipsilateral extension of an existing spinal construct uses an offset rod connector for receiving an additional spinal rod that may be placed interiorly or exteriorly of the existing spinal construct.
    Type: Application
    Filed: February 21, 2014
    Publication date: June 19, 2014
    Applicant: SPINE WAVE, INC.
    Inventors: Scott McLean, Timothy E. Adamson
  • Patent number: 8523911
    Abstract: The present invention provides a spine stabilization system having a first bone anchor having a first receiving portion and a second bone anchor having a second receiving portion. The first and second elongated rods are positioned within the first and second receiving portions. The first and second locking caps are configured to retain and capture the first and second elongated rods within the first and second bone anchors. The top connector is configured with a first and a second end, which are provided with elongated openings. The first and second locking caps have a threaded portion for coupling to a first and second locking nut. The locking caps are also provided with at least one flange for coupling to the bone anchor, and a bearing surface spaced apart from the bone anchor, the bearing surface configured to contact the top connector.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: September 3, 2013
    Assignee: Globus Medical, Inc.
    Inventors: Mehul R. Jani, Michal Zentko
  • Patent number: 8353937
    Abstract: A spinal stabilization system, apparatus, and method are disclosed which include an interconnection mechanism for engaging stabilization members to one another. In one embodiment, the interconnection mechanism comprises a locking member having first and second threaded segments. An anchor member is provided having an upper segment and a lower segment, wherein the lower segment is structurally configured for engagement with a respective bone segment. A first stabilization member is connected to the upper segment of the anchor member. A locking member is engaged with the anchor member such that the first stabilization member is fixedly secured to the anchor member by a lower portion of the locking member having a first threaded segment. A second stabilization member is connected to an upper portion of the locking member by a cap that is threaded onto a second threaded segment of the locking member.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: January 15, 2013
    Assignee: Warsaw Orthopedic, Inc.
    Inventors: Marco Dagoberto Capote, Robert S. Biscup, Charles L. Branch
  • Patent number: 8202302
    Abstract: A pedicle screw and rod system that has particular application for spinal fusion surgery. The system includes pedicle screws having ball-shaped heads that are threaded through pedicles of adjacent vertebra into the vertebral body. The system also includes two cannulated posts having a head portion with a planar portion and an opening for accepting the head of the pedicle screw in a secure and multi-axial engagement. The system further includes a tube portion that is coupled to the head portion and extends above the patient's skin. The system also includes a lordotic slotted rod that is slid down the tube portions to be positioned on top of the head portions of the posts so that the planar portions are locked within the slot. Bolts are then slid down the tube portions and are threaded to a threaded portion on the planar portion.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: June 19, 2012
    Assignee: MI4Spine, LLC
    Inventors: Miguelangelo J. Perez-Cruet, John R. Pepper
  • Patent number: 7985245
    Abstract: A low-profile surgical implant assembly is provided that includes a connector device that is an integral part of a rod, the connector device allowing the rod to be attached directly to a bone screw, such as a pedicle screw. Another aspect of the invention is a clamp device that allows the length of a rod spanning to attachment devices to be adjusted at the time of implantation, and further allows the clamp device to be secured by tightening a securing end of the clamp at the attachment device. The assemblies are useful for insertion into bone and connecting a foreign object to bone via a polyaxial coupling mechanism. A method for implanting the assembly is also provided.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: July 26, 2011
    Inventor: Stephen Ritland
  • Patent number: 7922748
    Abstract: A polyaxial body is selectively removable from a pedicle screw in a spinal fixation system without disruption of the screw's placement in the patient's spine. The polyaxial body according to various embodiments of this invention may be locked relative to the screw head and coupled to the spine rod without deformation of the screw or body components while still allowing for subsequent removal of the body from the screw head. The head of the pedicle screw is threadably engaged with a retainer ring on the polyaxial body thereby permitting selective removal of the body from the screw head without disrupting the placement of the screw in the spine. This allows for the pedicle screw to remain in the spine as the fixation system is adjusted as required by the surgeon for subsequent and reliable reanimation.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: April 12, 2011
    Assignee: Zimmer Spine, Inc.
    Inventor: Zachary M. Hoffman
  • Patent number: 7896905
    Abstract: What is provided is a fixation system that offers a strong and stable construct for maximum fusion augmentation and yet is versatile enough for any patient and is easy to use. Disclosed is a connection assembly for connecting a spinal implant, the assembly comprising: a body, the body including a body opening for receiving at least a portion of a first connector; a swivel having first and second ends and being operatively connected to the body, the first end including a swivel opening for receiving at least a portion of a second connector; a locking plate having an arm at least partially extending into the body opening; a locking unit operatively connected to the body and contacting the second end of the swivel; and whereby activation of the locking unit causes the arm to engage the first connector and swivel opening to engage the second connector thereby preventing relative rotation between the first and second connectors.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: March 1, 2011
    Inventors: David Lee, Eric Graham, James P. Payne, Jr.
  • Patent number: 7722652
    Abstract: A pivoting connector couples a vertebral member to a longitudinal member. An anchor is pivotally attached to a body by positioning a head of the anchor within a cavity in the body. A longitudinal rod is inserted into a channel also positioned within the body and axially aligned with the cavity. A retainer applies a force to maintain the longitudinal rod within the channel, however the force may be isolated from the anchor. The cavity is adjustable between a plurality of sizes that apply different resistances to pivoting movement of the anchor relative to the body. The adjustment may be performed before or during a surgical procedure. The adjustment may be performed by inserting different components or by rotating a threaded element to create more or less rotational interference.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: May 25, 2010
    Inventors: Jeff R. Justis, Fred J. Molz, IV