US3865105A - Device for exerting forces on and fixing the spinal column of a human body - Google Patents

Device for exerting forces on and fixing the spinal column of a human body Download PDF

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US3865105A
US3865105A US46834374A US3865105A US 3865105 A US3865105 A US 3865105A US 46834374 A US46834374 A US 46834374A US 3865105 A US3865105 A US 3865105A
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fastening members
means
vertebra
fastening
device according
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Freerk Lode
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Lode S Instr N V
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7049Connectors, not bearing on the vertebrae, for linking longitudinal elements together

Abstract

Apparatus consisting of three or more fastening members or clamps, adapted to be mounted on a vertebra of a spine, said clamps mutually connected so that a force can be exerted on one of the clamps which force is the sum of the forces on the two other clamps and that the clamps can be fixed with respect to each other.

Description

[limited States Patent 91 Lode [111 3,865,105 [4-51 Feb. 11,1975

1 1 DEVICE FOR EXERTHNG FORCES ON AND FlXlNG THE SPINAL COLUMN OF A HUMAN BODY [75] Inventor: Freerk Lode, Groningen,

Netherlands [73] Assignee: Lodes lnstrumenten N.V.,

Groningen, Netherlands [22] Filed: May 9, 1974 [21] Appl. No.: 468,343

[30] Foreign Application Priority Data May 16, 1973 Netherlands 7306853 [52] US. Cl 128/69, 128/83, 128/92 R [51] llnt. C1. A611 5/37 [58] Field of Search 128/69, 68, 83, 75, 92 R,

128/92 A, 92 E, 92 EA [56] References Cited UNITED STATES PATENTS 2,180,775 11/1939 Stevens 128/69 2,407,283 9/1946 Kelhoffer 128/69 X 2,447,698 8/1948 Haberer 128/69 2,593,624 4/1952 Stevens 128/69 3,709,216 1/1973 Hilyard 128/69 Primary ExaminerRichard A. Gaudet Assistant Examiner-.1. Yasko Attorney, Agent. or Firm-Breitenlleld & Levine [57] ABSTRACT Apparatus consisting of three or more fastening members or clamps, adapted to be mounted on a vertebra of a spine, said clamps mutually connected so that a force can be exerted on one of the clamps which force is the sum of the forces on the two other clamps and that the clamps can be fixed with respect to each other.

6 C1aims, 3 Drawing [Figures PATENTH] FEB] 1 I975 sum 2 [IF 2 BACKGROUND OF THE INVENTION My invention relates to a device for exerting forces on the spinal column of humans, consisting of a frame.

Such a device is known from and described in the Netherlands Patent Application 72.05774 in the name of Applicant. With this known device forces are exerted on the human spine whereby a correction of its position is obtained. After a lapse of time a correction such will have been obtained that further correction is no longer necessary. Then the obtained correction should for some time be maintained by means of support. Although the known device offers the patient sufficient freedom of movement it is advisable that it is taken away from the patient as soon as possible. Since a corrected spine is often not firm enough to preserve its corrected position it should be strengthened. This strengthening can, e.g., be obtained when by means of pieces of bone the vertebrae are interconnected. Strengthening of the spine requires therefore often additional surgical operation and so it takes a long time before the patient is fully recovered.

SUMMARY OF THE INVENTION My invention aims to provide a device for exerting forces on the spine. This object is attained according to the invention by the arrangement that the frame of the device consists of three or more members which each can be fixedly secured to a vertebra of the spinal column, of

connecting means connecting the fastening means mutually in such a way that they can freely move with respect to each other, and of fixation means capable of fixing the fastening members in such a way with respect to each other that each of the fastening members is prevented from moving in a plane perpendicular to the connecting line through the two other fastening members, while adjusting means can be connected with the frame, so that a force can be exerted on one of the fastening members and that force is situated in a plane which is perpendicular to the connecting line of the two other fastening members and that the force is equal to the sum of the forces exerted on that of the two other fastening members.

According to a preferred embodiment the adjusting means consist of three securing rods which are interconnected by two, more or less parallelly extending rods, while the distance between at least one of the three securing rods with respect to at least one of the parallelly extending rods is adjustable. The preferred embodiment is also constructed in such a way that at least one of the fastening members consists of some clamping members which can engage about the trans verse processus of the vertebra and which by means of bolts are clampingly connected around the aforementioned transverse processus, and of a cup-shaped part which can be hooked around the spinosus processus and by means of a bolt secured in the correct position (a so called thoracic clamp) and that at least one of the other fastening members consists of some clamping members which are provided with a bent end and which hook into the arch and around the spinosus processus of a vertebra and can be clampingly secured to the vertebra by means of bolts (a so called lumbar clamp).

With such a device it is possible to correct in a simple way a lateral curvature of the spine (scoliosis). After the achieved correction only an insignificant operation is necessary in order to fix the frame and to remove the adjusting means; so the spinal column obtains sufficient rigidity in order to enable the patient to move freely. The time the patient has to stay in the hospital is considerably shortened when this device is used, while the number of required operations is small.

SURVEY OF THE DRAWINGS FIG. 1 shows a side elevation of the device;

FIG. 2 shows a cross section through the device of FIG. 1 on the line IIII;

FIG. 3 shows a cross section through the device according to FIG. 1 on the line III-III.

DESCRIPTION OF PREFERRED EMBODIMENTS FIG. 1 shows a side elevation of the device composed of a frame and adjusting means. The adjusting means consist of three securing rods 1, 2, 3 which are interconnected by two, more or less parallelly extending rods 4, 5. FIG. 2 shows how one of the parallel rods 5 is connected with the rods 1, 2, 3. The mutual connections of the rods 1, 3 with the rods 4, 5 are all identical. The connections consist of a slidable sleeve 6 and a slidable sleeve 7, if needed electrically insulated from the rods 1 and 3, interconnected by a rod 8. The sleeve 7 is secured to the rod 8 in such a way that it can rotate around the axis of the rod 8. The sleeves 6, 7 can be fixedly secure to the rods by means of a bolt 9. The connections of the rod 2 with the rods 4, 5 consist of a sleeve 10 which is slid, if needed, electrically insulated, on the rod 2 to which is pivotally connected a rod 11 by means of a pin 12. A bush 13 is accommodated in rod 4, respectively 5 and through the hole 14 of the bush protudes the rod 11. The rod 11 is threaded and can be connected with the bush 13 by means of a nut 15. The distance from the rod 2 to the rod 5 can be reduced by means of torque spanners.

FIG. 3 shows the frame which is composed out of three interconnected fastening members. Two of the fastening members consist of clamping members 16, 17 which can engage about the transverse processus of a vertebra and by means of bolts 18 clampingly be connected around the aforementioned transverse processus. The other fastening member consists of some clamping members which are provided with bent ends 19, 10 which hook into the arch and around the spinosus processus of a vertebra snd which by means of bolts can be clampingly secured to the vertebra (a so called lumbar clamp).

Each of the outer fastenings means is by means of two rods 21 connected with the central fastening member. The two outer fastening members have each two holes, while through each of the holes protrudes a rod 21. The outer fastening members are in this way slidably mounted on the rod 21 and the distance between the fastening member with respect to each other can be changed in this way. Each of the rods 21 is connected by means of a bolt 22 with an intermediate piece 23. The intermediate piece 23 is connected by means of a bolt 24 with a plate 25 which is fixedly connected with the central fastening member. The contact surfaces of the rods 21 with the intermediate pieces 23 and of the intermediate pieces 23 with the plate 25 are roughened in such a way that when the bolts 22, 24 are tightly screwed the various parts are prevented from turning on the axes of the bolts. The rods 1, 2, 3 ofthe adjusting means are fixedly secured by means of screw thread on the frame. As a consequence the adjusting means can be removed from the frame in a simple way.

What I claim is: 1. A device for exerting forces on the spinal column of a human body, comprising a frame including three or more fastening members which each can be fixedly secured to a vertebra of the spinal column, connecting means connecting the fastening means mutually in such a way that they can freely move with respect to each other, and fixation means fixing the fastening members in such a way with respect to each other that each of the fastening members is prevented from moving in a plane perpendicular to the connecting line through the two other fastening members, and adjusting means connected to the frame, for exerting a force on one of the fastening members, the force being situated in a plane which is perpendicular to the connecting line of the two other fastening members and the force being equal to the sum of the forces exerted on the two other fastening members. 2. A device according to claim 1, wherein the adjusting means are connected to the frame by means of screw thread.

3. A device according to claim 1, wherein the adjusting means consist of three fastening rods which are interconnected by two more or less parallelly extending rods.

4. A device according to claim 3, wherein the distance between at least one of the three securing rods with respect to at least one of the parallelly extending rods is adjustable.

5. A device according to claim 1, wherein at least one of the fastening members consists of some clamping members which can engage about the transverse processus of a vertebra and be clampingly connected around the transverse processus by means of bolts (a so called thoracic clamp).

6. A device according to claim 1, wherein at least one of the fastening members consists of some clamping members which are provided with bent ends hooking into the arch and around the spinosus processus of a vertebra and which by means of a bolt can be clampingly secured to the vertebra (a so called lumbar clamp).

Claims (6)

1. A device for exerting forces on the spinal column of a human body, comprising a frame including three or more fastening members which each can be fixedly secured to a vertebra of the spinal Column, connecting means connecting the fastening means mutually in such a way that they can freely move with respect to each other, and fixation means fixing the fastening members in such a way with respect to each other that each of the fastening members is prevented from moving in a plane perpendicular to the connecting line through the two other fastening members, and adjusting means connected to the frame, for exerting a force on one of the fastening members, the force being situated in a plane which is perpendicular to the connecting line of the two other fastening members and the force being equal to the sum of the forces exerted on the two other fastening members.
2. A device according to claim 1, wherein the adjusting means are connected to the frame by means of screw thread.
3. A device according to claim 1, wherein the adjusting means consist of three fastening rods which are interconnected by two more or less parallelly extending rods.
4. A device according to claim 3, wherein the distance between at least one of the three securing rods with respect to at least one of the parallelly extending rods is adjustable.
5. A device according to claim 1, wherein at least one of the fastening members consists of some clamping members which can engage about the transverse processus of a vertebra and be clampingly connected around the transverse processus by means of bolts (a so called thoracic clamp).
6. A device according to claim 1, wherein at least one of the fastening members consists of some clamping members which are provided with bent ends hooking into the arch and around the spinosus processus of a vertebra and which by means of a bolt can be clampingly secured to the vertebra (a so called lumbar clamp).
US46834374 1973-05-16 1974-05-09 Device for exerting forces on and fixing the spinal column of a human body Expired - Lifetime US3865105A (en)

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Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361144A (en) * 1980-06-02 1982-11-30 Slaetis Paer E V External compression frame for stabilizing unstable pelvic fractures
US4505268A (en) * 1983-02-17 1985-03-19 Vicente Sgandurra Scoliosis frame
US4573454A (en) * 1984-05-17 1986-03-04 Hoffman Gregory A Spinal fixation apparatus
US4887596A (en) * 1988-03-02 1989-12-19 Synthes (U.S.A.) Open backed pedicle screw
US4907577A (en) * 1989-04-03 1990-03-13 Wu Shing Sheng Spinal transpedicle drill jig
US5092867A (en) * 1988-07-13 1992-03-03 Harms Juergen Correction and supporting apparatus, in particular for the spinal column
US5196013A (en) * 1989-11-03 1993-03-23 Harms Juergen Pedicel screw and correcting and supporting apparatus comprising such screw
US5219349A (en) * 1991-02-15 1993-06-15 Howmedica, Inc. Spinal fixator reduction frame
US5261907A (en) * 1991-05-17 1993-11-16 Vignaud Jean L Interconnecting device able to lock spinal osteosynthesis fasteners
US5300071A (en) * 1992-11-17 1994-04-05 Ace Medical Company Pelvic stabilizer
US5672175A (en) * 1993-08-27 1997-09-30 Martin; Jean Raymond Dynamic implanted spinal orthosis and operative procedure for fitting
US5704937A (en) * 1993-08-27 1998-01-06 Paulette Fairant Operative equipment for fixing spinal instrumentation
US5733284A (en) * 1993-08-27 1998-03-31 Paulette Fairant Device for anchoring spinal instrumentation on a vertebra
US5797910A (en) * 1993-08-27 1998-08-25 Paulette Fairant Operative equipment for correcting a spinal deformity
US20040009205A1 (en) * 1998-08-14 2004-01-15 Incept Llc Methods of using in situ hydration of hydrogel articles for sealing or augmentation of tissue or vessels
US20050171539A1 (en) * 2004-01-30 2005-08-04 Braun John T. Orthopedic distraction implants and techniques
US20060036246A1 (en) * 2004-08-03 2006-02-16 Carl Allen L Device and method for correcting a spinal deformity
US20060271050A1 (en) * 2005-03-30 2006-11-30 Gabriel Piza Vallespir Instrumentation and methods for reducing spinal deformities
US20070049932A1 (en) * 2005-08-23 2007-03-01 Aesculap Ag & Co. Kg Rod to rod connector
US20070233083A1 (en) * 2005-12-19 2007-10-04 Abdou M S Devices and methods for inter-vertebral orthopedic device placement
US20080027438A1 (en) * 2006-07-27 2008-01-31 Abdou M S Devices and methods for the minimally invasive treatment of spinal stenosis
US20080177315A1 (en) * 2006-12-20 2008-07-24 Aesculap Ii, Inc. Rod to Rod Connector
US20090012565A1 (en) * 2007-06-06 2009-01-08 Vertech, Inc. Medical device and method to correct deformity
US20090024166A1 (en) * 2004-08-03 2009-01-22 Vertech Innovations, Llc. Facet device and method
US20090088723A1 (en) * 2007-09-28 2009-04-02 Accessclosure, Inc. Apparatus and methods for treating pseudoaneurysms
US20100249836A1 (en) * 2009-03-26 2010-09-30 Kspine, Inc. Alignment system with longitudinal support features
US20100318129A1 (en) * 2009-06-16 2010-12-16 Kspine, Inc. Deformity alignment system with reactive force balancing
US20110054536A1 (en) * 2008-11-11 2011-03-03 Kspine, Inc. Growth directed vertebral fixation system with distractible connector(s) and apical control
US20110066188A1 (en) * 2009-09-15 2011-03-17 Kspine, Inc. Growth modulation system
US8012187B2 (en) 2002-08-14 2011-09-06 Warsaw Orthopedic, Inc. Techniques for spinal surgery and attaching constructs to vertebral elements
US20120123301A1 (en) * 2010-11-12 2012-05-17 Connor Robert A Spinal motion measurement device
US8608782B1 (en) * 2011-02-10 2013-12-17 Robert A. Rovner Scoliosis de-rotation system and method
US8771319B2 (en) 2012-04-16 2014-07-08 Aesculap Implant Systems, Llc Rod to rod cross connector
US8828056B2 (en) 2012-04-16 2014-09-09 Aesculap Implant Systems, Llc Rod to rod cross connector
US8920472B2 (en) 2011-11-16 2014-12-30 Kspine, Inc. Spinal correction and secondary stabilization
US8992536B2 (en) 2010-06-24 2015-03-31 Warsaw Orthopedic, Inc. Coplanar deformity correction system
US20160008035A1 (en) * 2008-09-05 2016-01-14 Biedermann Technologies Gmbh & Co. Kg Bone anchoring element and stabilization device for bones, in particular for the spinal column
US9333009B2 (en) 2011-06-03 2016-05-10 K2M, Inc. Spinal correction system actuators
US9451987B2 (en) 2011-11-16 2016-09-27 K2M, Inc. System and method for spinal correction
US9468468B2 (en) 2011-11-16 2016-10-18 K2M, Inc. Transverse connector for spinal stabilization system
US9468471B2 (en) 2013-09-17 2016-10-18 K2M, Inc. Transverse coupler adjuster spinal correction systems and methods
US9468469B2 (en) 2011-11-16 2016-10-18 K2M, Inc. Transverse coupler adjuster spinal correction systems and methods
US9763702B2 (en) 2012-11-16 2017-09-19 DePuy Synthes Products, Inc. Bone fixation assembly
US10098665B2 (en) 2012-08-01 2018-10-16 DePuy Synthes Products, Inc. Spine derotation system

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Cited By (92)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361144A (en) * 1980-06-02 1982-11-30 Slaetis Paer E V External compression frame for stabilizing unstable pelvic fractures
US4505268A (en) * 1983-02-17 1985-03-19 Vicente Sgandurra Scoliosis frame
US4573454A (en) * 1984-05-17 1986-03-04 Hoffman Gregory A Spinal fixation apparatus
US4887596A (en) * 1988-03-02 1989-12-19 Synthes (U.S.A.) Open backed pedicle screw
US5092867A (en) * 1988-07-13 1992-03-03 Harms Juergen Correction and supporting apparatus, in particular for the spinal column
US4907577A (en) * 1989-04-03 1990-03-13 Wu Shing Sheng Spinal transpedicle drill jig
US5196013A (en) * 1989-11-03 1993-03-23 Harms Juergen Pedicel screw and correcting and supporting apparatus comprising such screw
US5219349A (en) * 1991-02-15 1993-06-15 Howmedica, Inc. Spinal fixator reduction frame
US5261907A (en) * 1991-05-17 1993-11-16 Vignaud Jean L Interconnecting device able to lock spinal osteosynthesis fasteners
AU644738B2 (en) * 1991-05-17 1993-12-16 Philippe Lapresele Interconnecting device able to lock spinal osteosynthesis fastener
US5300071A (en) * 1992-11-17 1994-04-05 Ace Medical Company Pelvic stabilizer
US5672175A (en) * 1993-08-27 1997-09-30 Martin; Jean Raymond Dynamic implanted spinal orthosis and operative procedure for fitting
US5704937A (en) * 1993-08-27 1998-01-06 Paulette Fairant Operative equipment for fixing spinal instrumentation
US5733284A (en) * 1993-08-27 1998-03-31 Paulette Fairant Device for anchoring spinal instrumentation on a vertebra
US5797910A (en) * 1993-08-27 1998-08-25 Paulette Fairant Operative equipment for correcting a spinal deformity
US7780980B2 (en) 1998-08-14 2010-08-24 Incept, Llc Methods of using in situ hydration of hydrogel articles for sealing or augmentation of tissue or vessels
US7648713B2 (en) 1998-08-14 2010-01-19 Incept Llc Methods of using in situ hydration of hydrogel articles for sealing or augmentation of tissue or vessels
US20040009205A1 (en) * 1998-08-14 2004-01-15 Incept Llc Methods of using in situ hydration of hydrogel articles for sealing or augmentation of tissue or vessels
US20060193899A1 (en) * 1998-08-14 2006-08-31 Incept Llc Methods of using in situ hydration of hydrogel articles for sealing or augmentation of tissue or vessels
US20080017201A1 (en) * 1998-08-14 2008-01-24 Incept Llc Methods of using in situ hydration of hydrogel articles for sealing or augmentation of tissue or vessels
US8105622B2 (en) 1998-08-14 2012-01-31 Incept Llc Methods of using in situ hydration of hydrogel articles for sealing or augmentation of tissue or vessels
US20100119451A1 (en) * 1998-08-14 2010-05-13 Incept, Llc Methods of using in situ hydration of hydrogel articles for sealing or augmentation of tissue or vessels
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US8303632B2 (en) * 2002-08-14 2012-11-06 Warsaw Orthopedic, Inc. Techniques for spinal surgery and attaching constructs to vertebral elements
US20110276138A1 (en) * 2002-08-14 2011-11-10 Sherman Michael C Techniques for spinal surgery and attaching constructs to vertebral elements
US7297146B2 (en) 2004-01-30 2007-11-20 Warsaw Orthopedic, Inc. Orthopedic distraction implants and techniques
US8142476B2 (en) 2004-01-30 2012-03-27 Warsaw Orthopedic, Inc. Orthopedic distraction implants and techniques
US20050171539A1 (en) * 2004-01-30 2005-08-04 Braun John T. Orthopedic distraction implants and techniques
US9801666B2 (en) 2004-08-03 2017-10-31 K2M, Inc. Device and method for correcting a spinal deformity
US20090024166A1 (en) * 2004-08-03 2009-01-22 Vertech Innovations, Llc. Facet device and method
US8114158B2 (en) 2004-08-03 2012-02-14 Kspine, Inc. Facet device and method
US7658753B2 (en) 2004-08-03 2010-02-09 K Spine, Inc. Device and method for correcting a spinal deformity
US20100100133A1 (en) * 2004-08-03 2010-04-22 K Spine, Inc. Device and method for correcting a spinal deformity
US9011491B2 (en) 2004-08-03 2015-04-21 K Spine, Inc. Facet device and method
US8043345B2 (en) 2004-08-03 2011-10-25 K Spine, Inc. Device and method for correcting a spinal deformity
US9451997B2 (en) 2004-08-03 2016-09-27 K2M, Inc. Facet device and method
US20060036246A1 (en) * 2004-08-03 2006-02-16 Carl Allen L Device and method for correcting a spinal deformity
US8002801B2 (en) 2004-08-03 2011-08-23 K Spine, Inc. Adjustable spinal implant device and method
US8016860B2 (en) 2004-08-03 2011-09-13 K Spine, Inc. Device and method for correcting a spinal deformity
US8147524B2 (en) * 2005-03-30 2012-04-03 Warsaw Orthopedic, Inc. Instrumentation and methods for reducing spinal deformities
US20060271050A1 (en) * 2005-03-30 2006-11-30 Gabriel Piza Vallespir Instrumentation and methods for reducing spinal deformities
US20070049932A1 (en) * 2005-08-23 2007-03-01 Aesculap Ag & Co. Kg Rod to rod connector
US7628799B2 (en) 2005-08-23 2009-12-08 Aesculap Ag & Co. Kg Rod to rod connector
US20100318128A1 (en) * 2005-12-19 2010-12-16 Samy Abdou Devices and methods for inter-vertebral orthopedic device placement
US8845688B2 (en) 2005-12-19 2014-09-30 Samy Abdou Devices and methods for inter-vertebral orthopedic device placement
US8002802B2 (en) * 2005-12-19 2011-08-23 Samy Abdou Devices and methods for inter-vertebral orthopedic device placement
US20070233083A1 (en) * 2005-12-19 2007-10-04 Abdou M S Devices and methods for inter-vertebral orthopedic device placement
US20080027438A1 (en) * 2006-07-27 2008-01-31 Abdou M S Devices and methods for the minimally invasive treatment of spinal stenosis
US8303630B2 (en) 2006-07-27 2012-11-06 Samy Abdou Devices and methods for the minimally invasive treatment of spinal stenosis
US7744632B2 (en) 2006-12-20 2010-06-29 Aesculap Implant Systems, Inc. Rod to rod connector
US20080177315A1 (en) * 2006-12-20 2008-07-24 Aesculap Ii, Inc. Rod to Rod Connector
US20090012565A1 (en) * 2007-06-06 2009-01-08 Vertech, Inc. Medical device and method to correct deformity
US9848917B2 (en) 2007-06-06 2017-12-26 K2M, Inc. Medical device and method to correct deformity
US8162979B2 (en) 2007-06-06 2012-04-24 K Spine, Inc. Medical device and method to correct deformity
US20090088723A1 (en) * 2007-09-28 2009-04-02 Accessclosure, Inc. Apparatus and methods for treating pseudoaneurysms
US9907578B2 (en) * 2008-09-05 2018-03-06 Biedermann Technologies Gmbh & Co. Kg Bone anchoring element and stabilization device for bones, in particular for the spinal column
US20160008035A1 (en) * 2008-09-05 2016-01-14 Biedermann Technologies Gmbh & Co. Kg Bone anchoring element and stabilization device for bones, in particular for the spinal column
US8828058B2 (en) 2008-11-11 2014-09-09 Kspine, Inc. Growth directed vertebral fixation system with distractible connector(s) and apical control
US20110054536A1 (en) * 2008-11-11 2011-03-03 Kspine, Inc. Growth directed vertebral fixation system with distractible connector(s) and apical control
US9510865B2 (en) 2008-11-11 2016-12-06 K2M, Inc. Growth directed vertebral fixation system with distractible connector(s) and apical control
US8357182B2 (en) 2009-03-26 2013-01-22 Kspine, Inc. Alignment system with longitudinal support features
US8357183B2 (en) 2009-03-26 2013-01-22 Kspine, Inc. Semi-constrained anchoring system
US9358044B2 (en) 2009-03-26 2016-06-07 K2M, Inc. Semi-constrained anchoring system
US20100256684A1 (en) * 2009-03-26 2010-10-07 Kspine, Inc. Semi-constrained anchoring system
US20100249836A1 (en) * 2009-03-26 2010-09-30 Kspine, Inc. Alignment system with longitudinal support features
US8518086B2 (en) 2009-03-26 2013-08-27 K Spine, Inc. Semi-constrained anchoring system
US9173681B2 (en) 2009-03-26 2015-11-03 K2M, Inc. Alignment system with longitudinal support features
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Also Published As

Publication number Publication date
DD113997A5 (en) 1975-07-12
NL7306853A (en) 1974-11-19
DE2423371A1 (en) 1974-12-05
GB1473865A (en) 1977-05-18

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