Femoral Screw Patents (Class 606/65)
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Patent number: 8435240Abstract: A metal bone supporter for medical bone substitute including a supporter and a connector component which are functionally and structurally designed according to anatomical data and biomechanical data. The titanium alloy powders in the device are able to be scanned, melted and molded through electron beams, to form a cylinder with the strength and elastic modulus similar to cancellous bones of the human body. The supporter component is a porotic spongy body structure with threads on an end, and porous structure forms a rough surface. The connector component is made with a smooth surface and a dense solid mass inside, a thread on an end, and is connected to the supporter component as a removable body. The porous structure enables bone growth, and the device has a high surface friction coefficient, and has a stable structure and mechanical properties are similar to bones.Type: GrantFiled: May 15, 2009Date of Patent: May 7, 2013Inventor: Haiying Yu
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Patent number: 8398636Abstract: A hip fracture device providing distance limited dynamization, load controlled dynamization and combinations of both dynamization methods by varying components. The hip fracture device includes a plate having a head portion and a shaft portion. A barrel projects from the head portion of the plate and a screw is inserted in the barrel. A friction pin is slidably connected with the screw, and an end cap is fixed to the head portion of the plate. The friction pin is fixedly connected with the end cap. The screw slides over the friction pin and toward the end cap when a load is applied on the fracture device. The load required for further sliding of the screw over the friction pin increases incrementally as the screw slides towards the end cap.Type: GrantFiled: April 11, 2008Date of Patent: March 19, 2013Assignee: Stryker Trauma GmbHInventors: Bernd Simon, Jakob Kemper, Carsten Hoffmann
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Patent number: 8382835Abstract: An apparatus and method is disclosed for performing a surgery, such as an orthopedic surgery. The apparatus can include a guide portion and an alignment portion. The guide portion can assist in positioning the alignment portion to assist in aligning an implant. The implant can be aligned and positioned to hold a graft relative to a bone portion.Type: GrantFiled: May 11, 2010Date of Patent: February 26, 2013Assignee: Biomet Sports Medicine, LLCInventors: Jason D. Meridew, Troy M. Walters, Ryan A. Kaiser
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Patent number: 8249696Abstract: Various methods and devices are provided for navigating through bone. In one embodiment, a bone navigation device is provided and includes a bone penetrating member configured to be implanted in bone and having at least one optical waveguide extending therethrough. The optical waveguide is adapted to illuminate tissue surrounding the device and to receive reflected/transmitted light from the tissue to determine the optical characteristics of the tissue, thus facilitating navigation through the tissue. At least one window can be formed in the bone penetrating member for allowing light from the at least one optical waveguide to illuminate the tissue, and for receiving the reflected light.Type: GrantFiled: December 19, 2007Date of Patent: August 21, 2012Assignee: DePuy Spine, Inc.Inventors: Michael A. Fisher, Paul Birkmeyer, John Riley Hawkins, Katherine Herard, Anwar Upal
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Patent number: 8187276Abstract: The present invention is an improved unique odd angle internal fixation device for both a transverse and longitudinal fracture located at the junction of the metaphysis and diaphysis of a long bone such as the proximal humerus. The improved odd angle internal fixation device includes an elongated lag screw and a rectangular shaped guide plate having multiple holes throughout the plate to host pins and screws and four tips on the front side of the plate. A lag screw with a cylindric head having a hexagonal cavity introduced through the diaphyseal segment of the fracture at three angles, 90, and 150 and 160 degrees, cross fixing the respective bone longitudinal and transverse fracture line and settling in the depth of the epiphysis. An additional locking screw is introduced on the top of the lag screw head to securely lock the lag screw after being settled into the epiphysis.Type: GrantFiled: September 26, 2006Date of Patent: May 29, 2012Inventors: Christopher A. Zahiri, Hormoz Zahiri
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Patent number: 8177786Abstract: A hip screw assembly for fixation of a fractured femur is provided. The hip screw assembly includes a screw for engagement with the femur. The hip screw assembly also includes a barrel defining a cavity in the barrel. The barrel is fixedly secured to the plate. The screw including a portion thereof fitted in the cavity of the barrel. The hip screw assembly also includes a stop positionable in the barrel. The stop provides a limit on the movement of said screw in said barrel. The screw and the barrel have a first arrangement between each other in which the screw slides in the cavity of said barrel a first selectable predetermined distance and a second arrangement in which the screw slides a second selectable predetermined distance. The second distance is greater than the first distance.Type: GrantFiled: March 30, 2007Date of Patent: May 15, 2012Assignee: DePuy Products, Inc.Inventors: Matthew V. Leyden, Matthew S. Wallace, Daniel S. Horwitz, George J. Haidukewych, David A. Hawkes, Marc E. Ruhling
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Patent number: 8157803Abstract: System, including methods, apparatus, and kits, for fixing a bone using an intramedullary nail interlocked with a buttress member disposed on the bone.Type: GrantFiled: August 21, 2008Date of Patent: April 17, 2012Assignee: Surgical Implant Generation NetworkInventors: Lewis G. Zirkle, Jr., Franklyn D. Faultersack, Dule Mehic, Richard D. Grizzell
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Patent number: 8147493Abstract: The invention relates to a trochanter stabilizing device (40), especially for fixing bone fragments in the region of the hip joint (11) or for fixing the greater trochanter (12), including A) bone stabilizing means (1) consisting of a central plate (2) with at least one fixing perforation (13) for receiving a bone fixing means (20); B) a longitude bone plate (30) with a bushing (31) arranged at an angle for receiving a fixing element (50) which can be introduced into the region of the hip joint (11) fixed thereto, whereby C) at least three peripheral arms (4) originate from the central plate (2), whereby D) each peripheral arm (4) is provided with at least one hole (5) for receiving a bone fixing means (20).Type: GrantFiled: March 8, 2006Date of Patent: April 3, 2012Assignee: Synthes USA, LLCInventors: Christof Dutoit, André Frenk, Philippe Chelius
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Patent number: 8137350Abstract: In an internal fixator having a sliding mechanism for treating femoral trochanteric fracture, it is intended to firmly hold the femoral head by setting a sliding direction at a high angle. The fixator is constituted of a sliding nail, a femoral head nail, and a sleeve plate. The sliding nail is inserted at a high angle of about 160° in relation to a femoral axis. The femoral head nail is inserted at a low angle of about 95°. A tip of the femoral head nail is located within the femoral head. The femoral head nail is combined and joined with the sliding nail within the bone. A sliding nail passes and slides within the sleeve of the sleeve plate. A sliding direction is consistent with a tangential direction of an inner cortical bone at a fracture side. Thus, displacement between the fracture edges is less likely to occur and excessive shortening can be avoided. With the femoral head nail, the femoral head can be firmly held.Type: GrantFiled: September 10, 2007Date of Patent: March 20, 2012Inventor: Shu Nakamura
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Patent number: 8100911Abstract: An apparatus for treating a bone fracture comprises an intramedullary rod extending through a first bone segment of a fractured bone. A lag screw assembly extends through a first transverse aperture in the rod, while a control member extends through a second transverse aperture longitudinally offset from the first aperture. The lag screw assembly includes a lag screw engaged to the second bone segment and a locking sleeve mounted over a proximal portion of the lag screw. The locking sleeve defines a groove aligned with the second aperture. The control member includes a distal portion penetrating the bone segments, an intermediate portion configured to engage the second aperture. and an enlarged head configured to slidably engage the groove. The groove includes a terminus that contacts the head of the control member after a predetermined amount of lateral migration of the lag screw as the fracture collapses.Type: GrantFiled: June 30, 2008Date of Patent: January 24, 2012Assignee: DePuy Products, Inc.Inventors: Ken Yamazaki, Andrew H. Berthusen, Anthony J. Metzinger, Charles D. Christie
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Patent number: 8012155Abstract: A method and apparatus configured to strengthen and support a portion of a bone, such as the femoral head of the proximal femur, for example. The apparatus may include a housing or base member and a movable support member connected to the housing and configured to move between a first, undeployed position in which the support member is disposed proximate the housing or base such that the apparatus may be inserted into bone, and a second, deployed position in which the support member extends away from the housing or base for supporting the femoral head. The support member may be a rod, one or more wires, a leaf spring, a bladder, or an expandable mesh material, for example.Type: GrantFiled: April 2, 2009Date of Patent: September 6, 2011Assignee: Zimmer, Inc.Inventors: Matthew P. Prygoski, Antony J. Lozier, Russell M. Parrott, Andrew L. Gray, Nicolas J. Pacelli
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Patent number: 7972336Abstract: The present invention relates to methods and devices for treating femoral fractures, wherein a polyaxial cross member is employed to accommodate a wide range of angles and anteversions/retroversions in the femur, and different securing mechanisms can also be employed to hold and retain such polyaxial cross member in place at the desired orientation.Type: GrantFiled: September 18, 2007Date of Patent: July 5, 2011Assignee: Smith & Nephew, Inc.Inventors: Anthony H. James, R. Keith McReynolds, Joseph M. Ferrante, Kohsuke Watanabe
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Patent number: 7964208Abstract: An implantable screw for maintaining space during bone grafting procedures is provided, where the screw has a highly-polished contoured head having a region adapted to support soft tissue, a threaded shaft and a tip adapted to penetrate bone tissue. Also provided, a device combining multiple implantable screws in series in order to increase the available space to grow new bone and a method for implanting the implantable screw. The implantable screws provided may be used in conjunction with bone graft materials and are removable once a desired amount of new bone is generated.Type: GrantFiled: February 25, 2009Date of Patent: June 21, 2011Assignee: Warsaw Orthopedic, Inc.Inventors: Daniel B. Spagnoli, Todd A. Mobley, Jeffrey L. Scifert
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Publication number: 20110118741Abstract: A device for preventing distal migration of a LAG screw used for hip joint fracture surgery is disclosed. A locking support (10) has a Side Plate and Nail Rod (11) and a LAG Screw Insertion Opening (13) which are bent relative to each other. The Side Plate and Nail Rod (11) has a plurality of Plate and nail screw hole (12). The LAG Screw Insertion Opening (13) has a LAG Screw Sliding Hole (14). A Depressed Stop Groove (15) is defined on one side or on each of opposite sides on the inner surface of the LAG Screw Insertion Opening (13). A Shank of LAG screw (20) to be inserted into the LAG Screw Sliding Hole (14) has a Screw Thread (21) which is formed on the proximal end thereof and a Sliding Stop Apparatus (Elevated Knot) (22) which is formed on one side or on each of opposite sides on the outer surface of the Shank of LAG screw (20) to prevent migration of the distal end of the Shank of LAG screw (20).Type: ApplicationFiled: May 10, 2006Publication date: May 19, 2011Inventors: Jin Gon Kim, Myung Rae Cho
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Patent number: 7918854Abstract: A surgical stent made of biocompatible material for implantation in human tissue to enable blood and nutrients to flow from an area of vascular tissue to an area of tissue with little or no vasculature.Type: GrantFiled: April 13, 2007Date of Patent: April 5, 2011Assignee: Howmedica Osteonics Corp.Inventor: Herbert E. Schwartz
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Patent number: 7918853Abstract: Systems, devices and methods are disclosed for treating fractures and other bone maladies. The systems, devices and methods may include one or both of a stabilizing structure, such as an implant, bone plate, or other device and a fastening assembly, such as an engaging member and a compression member. The stabilizing structure in some embodiments has a proximal section with a transverse aperture and a cross-section that may be shaped to more accurately conform to the anatomical shape of cortical bone and to provide additional strength and robustness in its lateral portions, preferably without requiring significant additional material. The fastening assembly may be received to slide, in a controlled way, in the transverse aperture of the stabilizing structure.Type: GrantFiled: March 3, 2008Date of Patent: April 5, 2011Assignee: Smith & Nephew, Inc.Inventors: Kohsuke Watanabe, N. Kelley Grusin
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Publication number: 20100217265Abstract: An anti-subsidence dynamic hip screw comprises of a barrel having a connection portion and a tube-type extending portion angled a predetermined angle with the connection portion, and a first long groove and a first limit portion disposed at the inner wall of the extending portion respectively; a lag screw having an inside end disposed threading screw at its outer edge and a outside end with a predetermined length passed through in the extending portion by the way of reciprocation; a second long groove and a second limit portion disposed at the lag screw respectively related to the first long groove and the first limit portion, each first limit portion and second limit portion used for preventing the lag screw from rotating inside the extending portion; a blade piece with a predetermined length simultaneously passed through and retained in the first long groove and the related second long groove; a compressing screw having an inside end screwed with the outside end of the lag screw and an outside end retainedType: ApplicationFiled: May 22, 2009Publication date: August 26, 2010Applicants: NATIONAL YANG-MING UNIVERSITY, TAIPEI VETERANS GENERAL HOSPITALInventors: Tain-Hsiung CHEN, Cheng-Kung CHENG, Hung-Wen WEI, Yu-Shu LAI, Ping-Sheng YU
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Publication number: 20100174285Abstract: In one embodiment of the invention, a device for femoral neck fracture fixation includes a base, a first conduit that slidably receives a first screw, a second conduit that slidably receives a second screw, and a third conduit that slidably receives a third screw. The first conduit is spaced from the second conduit to allow the first screw to couple to the femoral neck inferior cortex and to further allow the second screw and third screw to each couple to the femoral head and reduce angular instability of the femoral neck fracture.Type: ApplicationFiled: March 17, 2010Publication date: July 8, 2010Inventor: Robert Probe
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Patent number: 7722651Abstract: A bone screw assembly includes a screw body, including anchor portion and rod-receiving portion, and a rod seat movably mounted in the screw body to allow for controlled angulation between a spinal connection element disposed in the rod seat and the screw body. The rod seat is pivotable in one or more selected directions about one or more axes relative to the screw body. The rod seat may include a first lower rod seat element disposed in a recess of the screw body having a cylindrical bottom surface to facilitate pivoting in a first direction. A second lower rod seat element is stacked on the first lower rod seat element and has a conical bottom surface abutting a top surface of the first lower rod seat element to facilitate pivoting in a second direction.Type: GrantFiled: October 21, 2005Date of Patent: May 25, 2010Assignee: DePuy Spine, Inc.Inventors: SeungKyu Daniel Kwak, Nam T. Chao, Andrea Burke
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Publication number: 20100121327Abstract: An orthopedic screw that may be used to align and stabilize a bone fracture and a method for using the same.Type: ApplicationFiled: November 11, 2008Publication date: May 13, 2010Applicant: ZIMMER, GMBHInventor: Jordan Velikov
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Patent number: 7713300Abstract: An apparatus and method is disclosed for performing a surgery, such as an orthopedic surgery. The apparatus can include a guide portion and an alignment portion. The guide portion can assist in positioning the alignment portion to assist in aligning an implant. The implant can be aligned and positioned to hold a graft relative to a bone portion.Type: GrantFiled: March 20, 2006Date of Patent: May 11, 2010Assignee: Biomet Sports Medicince, LLCInventors: Jason D Meridew, Troy M Walters, Ryan A Kaiser
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Patent number: 7670341Abstract: A bone fixation assembly includes a side plate for mounting on a bone and a barrel for receiving a portion of a lag screw, and configured to be inserted into a hole in the side plate. A mechanical spring located at the upper portion of the barrel biases a first detent portion toward a locking position with a second detent portion located on the side plate such that rotation of the barrel within the hole from a first position to a second position causes a compressing portion on the detent portion to contact a compressing portion on the second detent portion thereby compressing the mechanical spring so as to allow the barrel to be rotated to a third position wherein the mechanical spring is allowed to bias the first detent portion into the locking position such that a retaining portion of the first detent is adjacent to a retaining portion of the second detent and rotation of the barrel with respect to the side plate is restricted.Type: GrantFiled: December 16, 2005Date of Patent: March 2, 2010Assignee: DePuy Products, Inc.Inventors: Matthew V. Leyden, William Thomas Ryder, Wesley D. Johnson, Aaron J. Bisek, Marc E. Ruhling, Matthew S. Wallace
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Publication number: 20090326534Abstract: An apparatus for treating a bone fracture comprises an intramedullary rod extending through a first bone segment of a fractured bone. A lag screw assembly extends through a first transverse aperture in the rod, while a control member extends through a second transverse aperture longitudinally offset from the first aperture. The lag screw assembly includes a lag screw engaged to the second bone segment and a locking sleeve mounted over a proximal portion of the lag screw. The locking sleeve defines a groove aligned with the second aperture. The control member includes a distal portion penetrating the bone segments, an intermediate portion configured to engage the second aperture and an enlarged head configured to slidably engage the groove. The groove includes a terminus that contacts the head of the control member after a predetermined amount of lateral migration of the lag screw as the fracture collapses.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Applicant: DEPUY PRODUCTS, INC.Inventors: Ken Yamazaki, Andrew H. Berthusen, Anthony J. Metzinger, Charles D. Christie
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Publication number: 20090264885Abstract: A fracture reduction assembly and method for insertion of the assembly through a surgical site in one embodiment includes a base portion including a bone contacting surface and an upper surface, a barrel with a first end portion connected to the bone contacting surface, the base portion and the barrel defining a bore extending through the barrel and the base portion and opening at the upper surface of the base portion, a screw portion including a shaft with a first diameter sized to fit within the bore and a threaded portion with a second diameter sized to not fit within the bore, wherein at least a portion of the shaft is positioned within the bore, and a retainer coupled with the shaft and having a third diameter sized to fit within a first portion of the bore but not within a second portion of the bore.Type: ApplicationFiled: April 21, 2008Publication date: October 22, 2009Applicant: DePuy Products, Inc.Inventors: Stuart R. Grant, Jason Yambor
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Publication number: 20090177240Abstract: A method of stabilizing a fractured bone includes: a) providing a first support member in a medullary canal of a fractured bone; b) providing a second support member outside the fractured bone; c) providing a transverse connector adapted to link the first support member to the second support member in an angle-stable connection; d) connecting the transverse connector to the first and second support members in an angle-stable connection; e) providing one or more bone screws adapted to be connected to the second support member in an angle-stable connection; and f) implanting the bone screws such that the shank of the screw is implanted in the fractured bone while the head of the screw is connected to the second support member in an angle-stable connection. The system provides superior fixation of long bones that allows for early functional range of motion without loss of alignment or fixation.Type: ApplicationFiled: October 15, 2008Publication date: July 9, 2009Inventor: Edward A. Perez
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Patent number: 7534244Abstract: Systems, devices and methods are disclosed for treating fractures. The systems, devices and methods may include one or both of an implant, such as an intramedullary nail, and a fastening assembly, such as a lag screw and compression screw assembly. The implant in some embodiments has a proximal section with a transverse aperture and a cross-section that may be shaped to more accurately conform to the anatomical shape of cortical bone and to provide additional strength and robustness in its lateral portions, preferably without requiring significant additional material. The fastening assembly may be received to slide, in a controlled way, in the transverse aperture of the implant. In some embodiments, the engaging member and the compression device are configured so that the compression device interacts with a portion of the implant and a portion of the engaging member to enable controlled movement between the first and second bone fragments.Type: GrantFiled: September 8, 2004Date of Patent: May 19, 2009Assignee: Smith & Nephew, Inc.Inventors: Joseph Ferrante, Angie Mines
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Patent number: 7503919Abstract: A reverse obliquity fracture of the proximal femur is poorly secured with current generation hip screws, frequently necessitating the use of intramedullary fracture fixation devices or external fixation hardware. This compression hip screw comprises a femoral head lag screw, side plate, locking plug, and compressing screw, which can be assembled in a locked mode, preventing lateral translation of the lag screw within the side plate. In the locked mode, the proximal fracture fragment(s) are prevented from displacing laterally relative to the distal fragment, as occurs commonly when such a fracture is fixed with a conventional hip screw. No change in routine fracture reduction or insertion technique is required to use this compression hip screw. Additionally, this compression hip screw can be used in a dynamic or sliding mode, if so desired, when used to fix the more common femoral neck or intertrochanteric fracture patterns.Type: GrantFiled: April 28, 2006Date of Patent: March 17, 2009Inventor: James Albert Shaw
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Publication number: 20090069813Abstract: Disclosed is a fracture fixation device, for reducing and compressing fractures in a bone. The fixation device includes an elongate body comprising a first portion and a second portion that are detachably coupled to each other. The first portion defines a helical cancellous bone anchor and the second portion defines a distal end. An axially moveable proximal anchor is carried by the proximal end of the fixation device and is rotationally locked to the first portion. The device is rotated into position across the femoral neck and into the femoral head, and the proximal anchor is distally advanced to lock the device into place. The second portion is then detached from the first portion.Type: ApplicationFiled: November 7, 2008Publication date: March 12, 2009Applicant: INTERVENTIONAL SPINE, INC.Inventors: Gerard von Hoffmann, Victor V. Cachia, Brad S. Culbert
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Publication number: 20090036925Abstract: An intervertebral stabilizing device adapted to stabilize two or more vertebral bodies one another. The device comprises two fastening elements adapted to be associated to two vertebral bodies being contiguous to each other and a junction element operatively connecting the two fastening elements. The fastening elements and the junction element gradually distribute the stresses both on the peduncles and the spinous bones of the adjacent vertebrae, so as to gradually and continuously stress the column length, thus avoiding sudden changes in load and stiffness in the borderline zones.Type: ApplicationFiled: September 21, 2005Publication date: February 5, 2009Applicant: SINTEA BIOTECH S.P.A.Inventors: Giuseppe Sala, Paolo Guerra, Piergiorgio Caserta
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Publication number: 20080281326Abstract: Systems, devices and methods are disclosed for treating fractures and other bone maladies. The systems, devices and methods may include one or both of a stabilizing structure, such as an implant, bone plate, or other device and a fastening assembly, such as an engaging member and a compression member. The stabilizing structure in some embodiments has a proximal section with a transverse aperture and a cross-section that may be shaped to more accurately conform to the anatomical shape of cortical bone and to provide additional strength and robustness in its lateral portions, preferably without requiring significant additional material. The fastening assembly may be received to slide, in a controlled way, in the transverse aperture of the stabilizing structure.Type: ApplicationFiled: March 3, 2008Publication date: November 13, 2008Inventors: Kohsuke Watanabe, N. Kelley Grusin
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Publication number: 20080275447Abstract: An assembly includes a holder having a first arm and a second arm, the holder being movable between a first configuration and a second configuration. The assembly further includes an actuator movable in relation to the holder between a first position and a second position. Movement of the actuator from the first position to the second position causes movement of the holder from the first configuration to the second configuration. The first arm has a first bone plate contact portion, and the second arm has a second bone plate contact portion. The first bone plate contact portion and the second bone plate contact portion are separated by a first distance when the holder is in the first configuration. The first bone plate contact portion and the second bone plate contact portion are separated by a second distance when the holder is in the second configuration. The first distance is greater than the second distance.Type: ApplicationFiled: April 24, 2007Publication date: November 6, 2008Applicant: DePuy Products, Inc.Inventors: Takashi Sato, Andrew H. Berthusen, Derek C. Finch, Bryan C. Mendenhall
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Publication number: 20080275508Abstract: A bone end (epiphysis) fracture device including a rotatable fixation plate having a guide pin aperture and a plurality of fixation screw apertures formed therethrough. The guide pin aperture is used by a surgeon to position the fixation plate so that one or more fixation screw apertures are properly positioned to receive fixation screws inserted by the surgeon for repairing a bone end fracture. In another embodiment, the fracture fixation device also includes a side plate to which the fixation plate is rotatably attached. This embodiment further includes one or more side plate apertures formed through an elongate extension, whereby the fixation device may also be attached to the bone for which an end fracture is being repaired. A lock screw is provided in this embodiment for locking the position of the fixation plate with respect to the side plate.Type: ApplicationFiled: August 31, 2007Publication date: November 6, 2008Inventor: George J. Haidukewych
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Publication number: 20080269752Abstract: A hip fracture device providing distance limited dynamization, load controlled dynamization and combinations of both dynamization methods by varying components. The hip fracture device includes a plate having a head portion and a shaft portion. A barrel projects from the head portion of the plate and a screw is inserted in the barrel. A friction pin is slidably connected with the screw, and an end cap is fixed to the head portion of the plate. The friction pin is fixedly connected with the end cap. The screw slides over the friction pin and toward the end cap when a load is applied on the fracture device. The load required for further sliding of the screw over the friction pin increases incrementally as the screw slides towards the end cap.Type: ApplicationFiled: April 11, 2008Publication date: October 30, 2008Applicant: Stryker Trauma GmbHInventors: Bernd Simon, Jakob Kemper, Carsten Hoffmann
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Publication number: 20080262498Abstract: A novel apparatus for treating fractures of the femur is disclosed. The assembly includes two hip implants positioned into the head and neck of the femur. The hip implants solidly lock into each other, while retaining the possibility of being slided together through either the oblique bore of an intramedullary nail or through the barrel of a side plate. This novel apparatus allows the surgeon to achieve sliding rotational control of the femoral head, while avoiding independent rotation of each screw around its own axis. This novel apparatus also avoids independent sliding of each screw.Type: ApplicationFiled: April 18, 2007Publication date: October 23, 2008Inventor: Alberto Angel Fernandez Dell'Oca
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Publication number: 20080255559Abstract: A hip screw assembly for fixation of a fractured femur is provided. The hip screw assembly includes a screw for engagement with the femur. The hip screw assembly also includes a barrel defining a cavity in the barrel. The barrel is fixedly secured to the plate. The screw including a portion thereof fitted in the cavity of the barrel. The hip screw assembly also includes a stop positionable in the barrel. The stop provides a limit on the movement of said screw in said barrel. The screw and the barrel have a first arrangement between each other in which the screw slides in the cavity of said barrel a first selectable predetermined distance and a second arrangement in which the screw slides a second selectable predetermined distance. The second distance is greater than the first distance.Type: ApplicationFiled: March 30, 2007Publication date: October 16, 2008Applicant: DePuy Products, Inc.Inventors: Matthew V. Leyden, Matthew S. Wallace, Daniel S. Horwitz, George J. Haidukewych, David A. Hawkes, Marc E. Ruhling
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Publication number: 20080188853Abstract: Systems, devices and methods are disclosed for treating fractures. The systems, devices and methods may include one or both of an implant, such as an intramedullary nail, and a fastening assembly, such as a lag screw and compression screw assembly. The implant in some embodiments has a proximal section with a transverse aperture and a cross-section that may be shaped to more accurately conform to the anatomical shape of cortical bone and to provide additional strength and robustness in its lateral portions, preferably without requiring significant additional material. The fastening assembly may be received to slide, in a controlled way, in the transverse aperture of the implant. In some embodiments, the engaging member and the compression device are configured so that the compression device interacts with a portion of the implant and a portion of the engaging member to enable controlled movement between the first and second bone fragments.Type: ApplicationFiled: December 21, 2007Publication date: August 7, 2008Inventors: Joseph FERRANTE, Angie MINES, Anthony H. JAMES, Thomas A. RUSSELL, Roy SANDERS
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Publication number: 20080140077Abstract: An intramedullary nail for insertion in the intramedullary canal of a long bone. The nail includes a nail body having a leading end, a trailing end, and a proximal diametral axis. The trailing end has an axial bore and an intersecting transverse slot. The transverse slot is adapted to pass a sleeve for a lag screw. The sleeve has a sleeve bore axis, and the transverse slot is adapted to provide alternative angles for the sleeve bore axis with respect to the proximal diametral axis. The nail includes a sleeve lock screw. The axial bore includes threads that are adapted to engage complementary threads of the sleeve lock screw. The axial bore is adapted to pass therethrough the sleeve lock screw to make contact with an upper surface of the sleeve when the sleeve is disposed within the transverse slot. A lower surface of the transverse slot and the sleeve lock screw restrict axial movement of the sleeve within the transverse slot and away from the leading end.Type: ApplicationFiled: December 9, 2006Publication date: June 12, 2008Inventor: Adel Kebaish
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Patent number: 7378144Abstract: A device is formed by the process into a bone screw or fastener, wherein the head has a degree of polymer alignment and strength, and wherein the shank has a higher degree of polymer alignment and strength. In practice of the present invention, the polymer slug is pressed into the die cavity by the actuation of ram press, causing the slug to conform to the die cavity. Through this process, the polymer molecular orientation is aligned to different degrees, in different zones of the device.Type: GrantFiled: February 17, 2004Date of Patent: May 27, 2008Assignee: Kensey Nash CorporationInventors: Joseph DeMeo, Patrick E. Hearn, Robert L. McDade
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Publication number: 20080119855Abstract: In order to simplify the implantation of an orthopedic fixation system for securing a first bone fragment to a second bone fragment with a support screw which can be screwed into the first bone fragment by means of a bone thread, with a support sleeve surrounding the support screw and guiding this so as to be freely displaceable in longitudinal direction and with a bone plate which has at least one threaded bore, can be secured to the second bone fragment and into the threaded bore of which the support sleeve can be screwed by means of an external thread, it is suggested that the bone thread, on the one hand, and the threaded bore and the external thread, on the other hand, have the same pitch of the thread turns and that the bone thread have one thread turn and the threaded bore as well as the external thread have at least two thread turns located next to one another with a correspondingly smaller width of each thread turn.Type: ApplicationFiled: August 9, 2007Publication date: May 22, 2008Applicant: AESCULAP AG & Co. KGInventors: Roland Alois Hoegerle, Frank Altermann, Hans-Werner Stedtfeld, Martyn Parker
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Patent number: 7306600Abstract: An implant for fixation of a bone includes a shaft having a proximal end and a distal end, and a longitudinal axis defined between the proximal end and the distal end. A plurality of blades are disposed on the shaft, and are helically twisted about the longitudinal axis. At least one of the blades has a variable blade width that increases in a direction along the longitudinal axis. A mechanism for coupling the implant to a second fracture fixation implant may be provided separately or in combination.Type: GrantFiled: February 6, 2004Date of Patent: December 11, 2007Assignee: Synthes (U.S.A.)Inventors: Christoph Andreas Roth, Harry T. Hall, IV
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Patent number: 7207993Abstract: A method and apparatus for repairing the femur. A connector is provided having a claw-like member to engage with the greater trochanter. Along the body of the connector are a plurality of cable apertures and cable screws to receive and engage with cables that loop around the femur. Along the inferior end of the connector are bone screw slots and bone screws engaging the connector with the femur. The bone screws provide added support to the re-attached greater trochanter and provide support for periprosthetic fractures. The connector may be used to re-attach the greater trochanter by impacting a connector onto the greater trochanter, positioning the greater trochanter onto the femur, passing cables around the femur and through the connector, tensioning the cables to provide engagement between the greater trochanter and the femur, and attaching the connector to the femur using at least one bone screw.Type: GrantFiled: February 2, 2001Date of Patent: April 24, 2007Assignee: Pioneer Laboratories, Inc.Inventors: Eric A. Baldwin, Thomas S. Kilpela, Burns O. Severson
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Patent number: 7156879Abstract: 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: GrantFiled: October 6, 2000Date of Patent: January 2, 2007Assignee: Astra Tech ABInventors: Tomas Albrektsson, Lars Carlsson, Magnus Jacobsson, Warren MacDonald, Stig Wennberg
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Patent number: 7137817Abstract: A fixation device at least partially implantable into tissue has a shaft having an outer face and a threaded portion wound around the outer face and forming a helical groove. At least a part of the threaded portion is implantable into tissue. The threaded portion includes a first face, a second face and a third face. The first face has a first end portion in curved contact with the outer face and a second end portion opposite the first end portion. The second face has a third end portion in curved contact with the outer face and a fourth end portion opposite the third end portion. The third face is coupled to the second end portion and the fourth end portion and is substantially parallel with the outer face.Type: GrantFiled: December 21, 2001Date of Patent: November 21, 2006Assignee: Quantum Bioengineering, Ltd.Inventor: Raul R. Mena
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Patent number: 7135023Abstract: A compression bone screw device for fixating a fractured bone. The device includes a constant compression lag screw, a side plate having a moveable rollerball for receipt of the lag screw and a compression member engageable with the lag screw and rollerball to impart a constant compressive force across the bone fracture.Type: GrantFiled: July 2, 2004Date of Patent: November 14, 2006Inventors: William T. Watkins, Gary Wade
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Patent number: 7118572Abstract: This device addresses the treatment of femoral neck trauma which includes basilar, mid-cervical and sub-cap fractures. The assembly has a lag screw assembly, side plate, compression screw and cortical screw, which are implantable. A syringe adaptor instrument delivers ortho-biologic material to the fracture site through the lag screw assembly. The lag screw assembly utilizes a cannulated screw with external threads and deployable tangs to anchor into the femoral head and is implanted in such a manner as to have the lag screw threads and tangs located on the opposite side of the fracture from the side plate. The distal shaft of the lag screw interfaces with the side plate in a manner which allows axial translation only.Type: GrantFiled: January 27, 2004Date of Patent: October 10, 2006Assignee: Orthopedic Designs, Inc.Inventors: Dale G. Bramlet, Peter M. Sterghos
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Patent number: 7070601Abstract: Disclosed is a bone fracture fixation system, such as for reducing and compressing fractures in the proximal femur. The fixation system includes a plurality of elongated bodies with a helical cancellous bone anchor on a distal end of each of the bodies. An axially moveable plate with a plurality of openings is carried by the proximal end of the elongated bodies. The elongated bodies are rotated into position across the fracture or separation between adjacent bones and into the adjacent bone or bone fragment, and the plate is distally advanced to apply secondary compression and lock the device into place. The device may also be used for soft tissue attachments.Type: GrantFiled: January 14, 2004Date of Patent: July 4, 2006Assignee: Triage Medical, Inc.Inventors: Brad S. Culbert, Bruce E. Stevens
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Patent number: 6989014Abstract: A screw, driving device, and method are provided for repairing a tissue injury of a patient, such as a meniscal tear in a knee or osteochondritis dissecans. The screw has a root, a distal section having a narrowing cross section toward the distal end, and a thread along at least a portion of the root between the proximal end and the distal end. Along a leading section extending from the distal end, the helical pitch is substantially constant; along a trailing section between the leading section and the root's proximal end, the helical pitch decreases. The substantially constant pitch along the leading section assists in preventing a stripping of the helical section. At the proximal end is a head having a diameter greater than a major root diameter of the central section. The head is for improving the tissue retention characteristics of the screw.Type: GrantFiled: July 25, 2002Date of Patent: January 24, 2006Assignee: Ethicon, Inc.Inventors: Daniel F. Justin, Thomas Wade Fallin, Thomas F. Winters
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Patent number: 6890304Abstract: The present invention relates to a device for diagnosing physiological state based on blood pulse waves detected in the body. It is the objective of the present invention to provide a device which correctly diagnoses the current physiological state based on changes in physiological state measured over a specified period of time in the past while taking into consideration the cyclical variation exhibited in physiological state.Type: GrantFiled: June 2, 2000Date of Patent: May 10, 2005Assignee: Seiko Epson CorporationInventors: Kazuhiko Amano, Kazuo Uebaba, Hitoshi Ishiyama
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Patent number: 6887243Abstract: Disclosed is a fracture fixation device, for reducing and compressing fractures in a bone. The fixation device includes an elongate body. An axially moveable proximal anchor is carried by the proximal end of the fixation device and comprises a tubular sleeve that includes a plurality of graduations positioned on an outer surface of the tubular sleeve. The device is rotated into position across the femoral neck and into the femoral head, and the proximal anchor is distally advanced to lock the device into place. In certain embodiments, the elongated body includes a distal anchor with a distal cutting tip.Type: GrantFiled: July 12, 2002Date of Patent: May 3, 2005Assignee: Triage Medical, Inc.Inventor: Brad S. Culbert
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Patent number: 6855146Abstract: The invention relates to an intramedullary nail used for treating fractures of the femur. It comprises a distal end, which is appointed for insertion into the marrow cavity channel, a proximal end, and a longitudinal axis. A first bore is located adjacent the proximal end and extends through the proximal end and transversely intersects the longitudinal axis, and serves to accommodate a femoral head screw. The center axis of the first bore forms an angle with the longitudinal axis that ranges from 110° to 150°. A second bore is located between the first bore and the proximal end and extends through the proximal end and transversely intersects the longitudinal axis, and serves to accommodate a hip pin. The second bore is at least partially shaped as an oblong hole or slot with a width B and a length L>B, and the length L of the oblong hole extends in the direction of the longitudinal axis.Type: GrantFiled: June 3, 2002Date of Patent: February 15, 2005Inventors: Robert Frigg, Peter Brunner