GB2173565A - Expansion screw for surgical use - Google Patents

Expansion screw for surgical use Download PDF

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Publication number
GB2173565A
GB2173565A GB08607846A GB8607846A GB2173565A GB 2173565 A GB2173565 A GB 2173565A GB 08607846 A GB08607846 A GB 08607846A GB 8607846 A GB8607846 A GB 8607846A GB 2173565 A GB2173565 A GB 2173565A
Authority
GB
United Kingdom
Prior art keywords
screw
cylinder
bone
radially expandable
elongate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08607846A
Other versions
GB2173565B (en
GB8607846D0 (en
Inventor
Hatif Himoud
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB8607846D0 publication Critical patent/GB8607846D0/en
Publication of GB2173565A publication Critical patent/GB2173565A/en
Application granted granted Critical
Publication of GB2173565B publication Critical patent/GB2173565B/en
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical 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
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/686—Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
    • F16B13/061—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve of the buckling type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B29/00—Screwed connection with deformation of nut or auxiliary member while fastening

Abstract

A surgical bone screw assembly consists of an outer cylinder (1) and an inner screw (3) which projects from the end of the cylinder (1). An elongate nut (10) is engaged by the screw (3), extends beyond the end (16) of the cylinder (1) and terminates in an enlargement (18) in the form of a nut. A radially expandable plastics sleeve (12) is disposed between the end (16) of the cylinder and the enlargement (18) so that, in use, when the screw (3) is rotated the sleeve (12) is radially expanded to form a large surface contact area for abutting the inner surface (20) of bone cortex. <IMAGE>

Description

SPECIFICATION Screw for surgical use The invention relates to a screw, especially for surgical use, and has one object to provide an improved surgical screw which is easy to use and of improved efficiency in use.
A screw for surgical use should satisfy a number of desirable criteria in addition to being inexpensive and easy to use in the surgical repair of bones.
Although the screws are intended to provide a good clamp between adjacent bones and a plate they should nevertheless permit slight movement of bone so that bone growth is stimulated. In addition, the screws should be readily removed and should minimise the possibility of infection. Furthermore, should infection occur then the action should not cause loosening of the screws in the bones. Also the hole required to be drilled in the bone to receive the screw should not require to be reamed and should permit a much faster operation which is generally beneficial to the patient. In addition, screws should be capable of being used with a single or double cortex.
Typically, surgical screws are threaded and when a hole is drilled into the bone the hole is then reamed to create a thread to receive a threaded screw. This is time consuming, also the grip between the screw and the bone is very tight and, although secure, does not permit slight movement of bone which is necessary to fully stimulate bone growth. Furthermore, if infection occurs at the screw-bone interface, then the attachment can be loosened because the bone around the interface tends to resorb and provide a much less secure connection. In addition, the operation is slow because many such screws are required to give the necessary strength of attachment and generally such screws are passed through a double cortex, that is from one side of the bone to the other and it is not possible to practically use a single cortex.In addition, such screws can be difficult to remove and generally are intended to remain in the patient for a considerable length of time.
An object of the present invention is to provide an improved surgical screw which obviates and mitigates disadvantages associated with the aforementioned prior art screw types.
According to one aspect of the invention there is provided a screw for use in the surgical repair of bones, said screw comprising an outer hollow elongate cylinder, a screw element comprising a screw head and a threaded shank, the threaded shank being present within the outer cylinder and having a portion projecting beyond an end of said hollow elongate cylinder, a portion of the shank within the cylinder being of smaller diameter than the outer cylinder so as to define an annulus therebetween, an elongate threaded nut disposed in the annulus for co-opertion with the threaded shank, said elongate threaded nut projecting beyond the end of said hollow cylinder and having an end shoulder portion of greater diameter, a radially expandable element disposed between the end of the cylinder and said end shoulder portion whereby, in use, rotation of the screw element relative to said outer elongate hollow cylinder forces said end shoulder portion towards said cylinder end to radially expand said radially expanding element to form a bone securing plate.
According to another aspect of the invention there is provided a method of connecting a screw to a bone, the method comprising the steps of: a) drilling a hole in the wall of the bone to a depth sufficient to reach the medulla.
b) inserting in the hole a screw as claimed in claim 1 until the radially expandable portion is within the medulla, and c) rotating the screw to expand the radially expandable portion until that expanded portion abuts the inner surface of the bone wall to resist separation of the screw from the bone.
In order that the invention may be well understood, it will now be described by way of example with reference to the accompanying diagrammatic drawings, in which: Fig. 1 is a vertical elongate sectional view of an embodiment of a screw of the invention; Fig. 2 is a similar view showing the screw of Fig. 1 in use; Fig. 3 is a vertical elongate view of another embodiment of a screw of the invention, and Fig. 4 is a transverse section along lines 4-4 of Fig. 3.
Reference is first made to Fig. 1 of the drawings and depicts a screw which comprises an outer elongate cylinder 1 formed of stainless steel, about 1 mm wall thickness. The cylinder 1 has a flared head 2. The cylinder 1 contains a screw element generally indicated by reference numeral 3 having a screw head 4 and a threaded shank 5. The threaded shank 5 is of smaller diameter than the bore of the cylinder 1 so that an annulus 6 is defined. The cylinder has a restriction 7 through which the threaded shank 5 of the screw passes. The shank 5 has an external thread 9 which projects beyond the lower end 16 of the cylinder 1. An elongate threaded captive nut 10 having an internal thread 11 is present in the annulus 6 and in engagement with the threads 9 of the shank 5.
The lower end 17 of the captive nut 10 comprisr s an end shoulder portion in the form of a nut 18 beyond the lower end of the cylinder 1, the nut 18 having a diameter substantially equal to that of the outer diameter of the adjacent region of the cylinder 1.
A cylinder 12 of high density plastic is secured as by adhesive or welding to the lower end should portion 18 of the nut 10 and in the condition shown has a diameter substantially equal to that of the cylinder 1. The cylinder has an axial length of about 8mm. The cylinder 12 has a performed waist 13. The lower end of the cylinder 12 is secured to the end should portion or nut 18 at the lower end of the captive nut 10.
Reference is now made to Fig. 2 which depicts an example of the screw, in use, to repair a bone fracture in a limb. Firstly, the surgeon drills a hole in the bone cortex C to reach the medulla M. The hole is not reamed out. A plate P with an aperture is placed over the fracture until the aperture and drilled holes register and the screw is pushed into the hole, until the cylinder 12 projects beyond the cortex C into the medulla M. The screw 2 is then rotated to draw the nut 10 up the shank 5 and within the annulus 6. This axially compresses the plastic cylinder 12 and causes it to be folded upon itself and to expand radially to the condition shown in Fig. 2 to define a substantially circulate plate T about 2mm thick abutting the inner surface 20 of the bone cortex. In this way, the screw holds the plate P securelyto the bone.The flared shape of the outer cylinder avoids crumbling of the underlying bone.
Reference is now made to Fig. 3 in which like numerals denote like parts exceptthatthe suffix 'a' is added. In the case the cylinder 12a isformed of a material such as SILASTIC (RTM). A washer 24 is disposed between the cylinder la and the cylinder 12a. The cylinder 12a has fo ur enclosed slits 26 each stopping shdrt of the end of the cylinder. As best seen in Fig. 4 the slits are arranged at right angles to each other. In use, the screw operates as in the case of the embodiment shown in Figs. 1 and 2, and the washer 24 presents the cylinders la, 1 2a from rotating with respect to each other.
The screw may be made in sizes of from about 1 Omm to about 50mm in length. The screw is simple and reliable to use, and may be recovered for re-use.
The scrrew also permits minimal bone movement to result in stimulation of bone growth and the operation using such screws is much faster than with conventional screws. Also, holes drilled in bone do not require to be reamed and the screw can be used with a single or double cortex and should infection occur at the screw bone interface the effect on loosening of the screw is minimal.

Claims (10)

1. A screw for use in the surgical repair of bones, said screw comprising an outer hollow elongate cylinder, a screw element comprising a screw head and a threaded shank, the threaded shank being disposed within the outer cylinder and having a portion projecting beyond an end of said hollow elongate cylinder, the portion of the shank within the cylinder being of smaller diameter than the outer cylinder so as to define an annulus therebetween, an elongate threaded nut disposed in the annulus for co-opeation with the threaded shank, said elongate threaded nut projecting beyond the end of said hollow cylinder and having an end shoulder portion of greater diameter, a radially expandable element disposed between the end of the cylinder and said end shoulder portion, whereby, in use, rotation of the screw element relative to said outer elongate hollow cylinder forces said end shoulder portion towards said cylinder end to radially expand said radially expanding element to form a bone securing plate.
2. A screw as claimed in claim 1 wherein the outer diameter of said radially expandable element is substantially the same as the outer diameter of said elongate cylinder.
3. A screw as claimed in claim 1 or claim 2 wherein said radially expandable element has a preformed small diameter waist region.
4. A screw as claimed in any preceding claim wherein said radially expandable element is made of high density plastic.
5. A screw as claimed in any preceding claim wherein said outer elongate cylinder has a flared head portion for receiving said screw head.
6. A screw as claimed in any preceding claim wherein said radially expandable element has a periphery, a plurality of axially extending slits disposed around said periphery, said slits terminating before respective ends of said element.
7. A screw as claimed in claim 6 wherein said radially expandable element has four slits disposed at ninety degrees apart around said periphery.
8. A screw as claimed in claim 6 or 7 wherein a washer is disposed between said screw and the end of said outer hollow elongate cylinder.
9. A screw substantially as hereinbefore decribed with reference to Figs. 1, 2 or Figs. 3, 4 of the accompanying drawings.
10. A method of connecting a screw to a bone, the method comprising the steps of: a) drilling a hole in the wall of the bone to a depth sufficient to read the medulla.
b) inserting in the hole a screw as claimed in claim 1 until the radially expandable portion is within the medulla.
c) rotating the screw to expand the radially expandable portion until that expanded portion abuts the inner surface of the bone wall to resist separation of the screw from the bone.
GB8607846A 1985-04-03 1986-03-27 Screw assembly for surgical use Expired GB2173565B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB858508710A GB8508710D0 (en) 1985-04-03 1985-04-03 Screw for surgical use

Publications (3)

Publication Number Publication Date
GB8607846D0 GB8607846D0 (en) 1986-04-30
GB2173565A true GB2173565A (en) 1986-10-15
GB2173565B GB2173565B (en) 1989-10-25

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Family Applications (2)

Application Number Title Priority Date Filing Date
GB858508710A Pending GB8508710D0 (en) 1985-04-03 1985-04-03 Screw for surgical use
GB8607846A Expired GB2173565B (en) 1985-04-03 1986-03-27 Screw assembly for surgical use

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB858508710A Pending GB8508710D0 (en) 1985-04-03 1985-04-03 Screw for surgical use

Country Status (1)

Country Link
GB (2) GB8508710D0 (en)

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652395A1 (en) * 1989-09-28 1991-03-29 Otalu Sa Removable clinching bolt, method for fastening two components with the aid of this bolt, and method for removing it
WO1994004086A1 (en) * 1992-08-25 1994-03-03 Alexandre Worcel Osteosynthesis device
FR2728455A1 (en) * 1994-12-26 1996-06-28 Worcel Alexandre OSTEOSYNTHESIS DEVICE
FR2777447A1 (en) * 1998-04-21 1999-10-22 Tornier Sa Reversible fixing for bone implant e.g. suture
FR2777442A1 (en) * 1998-04-21 1999-10-22 Tornier Sa Anchor for suture fixing soft tissues to bone
DE19833070A1 (en) * 1998-07-23 2000-01-27 Fischer Artur Werke Gmbh Expansion anchors made of metal
WO2001080751A1 (en) * 2000-04-26 2001-11-01 Anchor Medical Technologies, Inc. Bone fixation system
EP1178226A2 (en) * 2000-08-03 2002-02-06 Niemann, Hans Dieter Connecting element insertable into prepared holes of walls or the like
WO2002078555A1 (en) * 2001-03-30 2002-10-10 Triage Medical, Inc. Distal bone anchors for bone fixation with secondary compression
US6511481B2 (en) 2001-03-30 2003-01-28 Triage Medical, Inc. Method and apparatus for fixation of proximal femoral fractures
WO2003047440A2 (en) * 2001-12-04 2003-06-12 The University Of Dundee Fixing device and applicator therefor
US6632224B2 (en) 1996-11-12 2003-10-14 Triage Medical, Inc. Bone fixation system
GB2392096A (en) * 2002-06-29 2004-02-25 Gareth Thomas Locking screw
WO2008105643A1 (en) * 2007-03-01 2008-09-04 Cuellar Puente Jose Antonio Securing device with a lateral occipital expansion screw to be included in posterior occipitocervical stabilisation systems
US7699893B2 (en) * 2003-06-27 2010-04-20 Ethicon, Inc. Flexible tibial sheath
WO2011028396A3 (en) * 2009-08-26 2011-06-30 Synthes Usa, Llc Stabilizing bone fixation element
US8287538B2 (en) 2008-01-14 2012-10-16 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
US8715284B2 (en) 2001-03-30 2014-05-06 Interventional Spine, Inc. Method and apparatus for bone fixation with secondary compression
US8906022B2 (en) 2010-03-08 2014-12-09 Conventus Orthopaedics, Inc. Apparatus and methods for securing a bone implant
US8945190B2 (en) 2002-07-19 2015-02-03 Interventional Spine, Inc. Method and apparatus for spinal fixation
US8961518B2 (en) 2010-01-20 2015-02-24 Conventus Orthopaedics, Inc. Apparatus and methods for bone access and cavity preparation
US9522070B2 (en) 2013-03-07 2016-12-20 Interventional Spine, Inc. Intervertebral implant
US9522028B2 (en) 2013-07-03 2016-12-20 Interventional Spine, Inc. Method and apparatus for sacroiliac joint fixation
US9730739B2 (en) 2010-01-15 2017-08-15 Conventus Orthopaedics, Inc. Rotary-rigid orthopaedic rod
US9839530B2 (en) 2007-06-26 2017-12-12 DePuy Synthes Products, Inc. Highly lordosed fusion cage
US9883951B2 (en) 2012-08-30 2018-02-06 Interventional Spine, Inc. Artificial disc
US9895236B2 (en) 2010-06-24 2018-02-20 DePuy Synthes Products, Inc. Enhanced cage insertion assembly
US9913727B2 (en) 2015-07-02 2018-03-13 Medos International Sarl Expandable implant
US9931223B2 (en) 2008-04-05 2018-04-03 DePuy Synthes Products, Inc. Expandable intervertebral implant
US9993349B2 (en) 2002-06-27 2018-06-12 DePuy Synthes Products, Inc. Intervertebral disc
US10022132B2 (en) 2013-12-12 2018-07-17 Conventus Orthopaedics, Inc. Tissue displacement tools and methods
US10058433B2 (en) 2012-07-26 2018-08-28 DePuy Synthes Products, Inc. Expandable implant
US10390963B2 (en) 2006-12-07 2019-08-27 DePuy Synthes Products, Inc. Intervertebral implant
US10398563B2 (en) 2017-05-08 2019-09-03 Medos International Sarl Expandable cage
US10433977B2 (en) 2008-01-17 2019-10-08 DePuy Synthes Products, Inc. Expandable intervertebral implant and associated method of manufacturing the same
US10500062B2 (en) 2009-12-10 2019-12-10 DePuy Synthes Products, Inc. Bellows-like expandable interbody fusion cage
US10537436B2 (en) 2016-11-01 2020-01-21 DePuy Synthes Products, Inc. Curved expandable cage
US10548741B2 (en) 2010-06-29 2020-02-04 DePuy Synthes Products, Inc. Distractible intervertebral implant
US10888433B2 (en) 2016-12-14 2021-01-12 DePuy Synthes Products, Inc. Intervertebral implant inserter and related methods
US10918426B2 (en) 2017-07-04 2021-02-16 Conventus Orthopaedics, Inc. Apparatus and methods for treatment of a bone
US10940016B2 (en) 2017-07-05 2021-03-09 Medos International Sarl Expandable intervertebral fusion cage
US11344424B2 (en) 2017-06-14 2022-05-31 Medos International Sarl Expandable intervertebral implant and related methods
US11426290B2 (en) 2015-03-06 2022-08-30 DePuy Synthes Products, Inc. Expandable intervertebral implant, system, kit and method
US11426286B2 (en) 2020-03-06 2022-08-30 Eit Emerging Implant Technologies Gmbh Expandable intervertebral implant
US11446156B2 (en) 2018-10-25 2022-09-20 Medos International Sarl Expandable intervertebral implant, inserter instrument, and related methods
US11452607B2 (en) 2010-10-11 2022-09-27 DePuy Synthes Products, Inc. Expandable interspinous process spacer implant
US11510788B2 (en) 2016-06-28 2022-11-29 Eit Emerging Implant Technologies Gmbh Expandable, angularly adjustable intervertebral cages
US11596523B2 (en) 2016-06-28 2023-03-07 Eit Emerging Implant Technologies Gmbh Expandable and angularly adjustable articulating intervertebral cages
US11612491B2 (en) 2009-03-30 2023-03-28 DePuy Synthes Products, Inc. Zero profile spinal fusion cage
US11752009B2 (en) 2021-04-06 2023-09-12 Medos International Sarl Expandable intervertebral fusion cage
US11850160B2 (en) 2021-03-26 2023-12-26 Medos International Sarl Expandable lordotic intervertebral fusion cage
US11911287B2 (en) 2010-06-24 2024-02-27 DePuy Synthes Products, Inc. Lateral spondylolisthesis reduction cage

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US6648890B2 (en) 1996-11-12 2003-11-18 Triage Medical, Inc. Bone fixation system with radially extendable anchor
DE60206274T2 (en) 1998-10-26 2006-06-08 Expanding Orthopedics Inc., Boston SPREADABLE DEVICE FOR ORTHOPEDICS
US6685706B2 (en) 2001-11-19 2004-02-03 Triage Medical, Inc. Proximal anchors for bone fixation system
US7828802B2 (en) 2004-01-16 2010-11-09 Expanding Orthopedics, Inc. Bone fracture treatment devices and methods of their use
US7998176B2 (en) 2007-06-08 2011-08-16 Interventional Spine, Inc. Method and apparatus for spinal stabilization
US9138219B2 (en) 2010-12-29 2015-09-22 Tarsus Medical Inc. Methods and devices for treating a syndesmosis injury

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GB685643A (en) * 1950-05-11 1953-01-07 Robert Turk Improvements in and relating to wall plugs, fixing bolts and the like
GB774002A (en) * 1954-08-26 1957-05-01 L H Newton & Co Ltd Anchorage bolts
GB1530344A (en) * 1976-08-02 1978-10-25 Resilient Grip Ltd Anchorage appliance

Cited By (111)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2652395A1 (en) * 1989-09-28 1991-03-29 Otalu Sa Removable clinching bolt, method for fastening two components with the aid of this bolt, and method for removing it
WO1994004086A1 (en) * 1992-08-25 1994-03-03 Alexandre Worcel Osteosynthesis device
FR2695026A1 (en) * 1992-08-25 1994-03-04 Alexandre Worcel Device for maintaining compression of a fractured bone.
US5437674A (en) * 1992-08-25 1995-08-01 Alexandre Worcel Osteosynthesis device
FR2728455A1 (en) * 1994-12-26 1996-06-28 Worcel Alexandre OSTEOSYNTHESIS DEVICE
WO1996019945A1 (en) * 1994-12-26 1996-07-04 Alexandre Worcel Osteosynthesis device
US6632224B2 (en) 1996-11-12 2003-10-14 Triage Medical, Inc. Bone fixation system
WO1999053843A1 (en) * 1998-04-21 1999-10-28 Tornier S.A. Reversible fixing device for setting an implant in the bone
FR2777442A1 (en) * 1998-04-21 1999-10-22 Tornier Sa Anchor for suture fixing soft tissues to bone
WO1999053844A1 (en) * 1998-04-21 1999-10-28 Tornier S.A. Suture anchor with reversible expansion
US6328758B1 (en) 1998-04-21 2001-12-11 Tornier Sa Suture anchor with reversible expansion
FR2777447A1 (en) * 1998-04-21 1999-10-22 Tornier Sa Reversible fixing for bone implant e.g. suture
EP1532930A1 (en) * 1998-04-21 2005-05-25 Tornier SA Suture anchor with reversible expansion
US6540770B1 (en) 1998-04-21 2003-04-01 Tornier Sa Reversible fixation device for securing an implant in bone
DE19833070A1 (en) * 1998-07-23 2000-01-27 Fischer Artur Werke Gmbh Expansion anchors made of metal
WO2001080751A1 (en) * 2000-04-26 2001-11-01 Anchor Medical Technologies, Inc. Bone fixation system
EP1178226A2 (en) * 2000-08-03 2002-02-06 Niemann, Hans Dieter Connecting element insertable into prepared holes of walls or the like
EP1178226A3 (en) * 2000-08-03 2003-04-16 Niemann, Hans Dieter Connecting element insertable into prepared holes of walls or the like
WO2002078555A1 (en) * 2001-03-30 2002-10-10 Triage Medical, Inc. Distal bone anchors for bone fixation with secondary compression
US6511481B2 (en) 2001-03-30 2003-01-28 Triage Medical, Inc. Method and apparatus for fixation of proximal femoral fractures
US10349991B2 (en) 2001-03-30 2019-07-16 DePuy Synthes Products, Inc. Method and apparatus for bone fixation with secondary compression
US10111695B2 (en) 2001-03-30 2018-10-30 DePuy Synthes Products, Inc. Distal bone anchors for bone fixation with secondary compression
US9408648B2 (en) 2001-03-30 2016-08-09 Interventional Spine, Inc. Method and apparatus for bone fixation with secondary compression
US8715284B2 (en) 2001-03-30 2014-05-06 Interventional Spine, Inc. Method and apparatus for bone fixation with secondary compression
WO2003047440A2 (en) * 2001-12-04 2003-06-12 The University Of Dundee Fixing device and applicator therefor
WO2003047440A3 (en) * 2001-12-04 2003-10-16 Univ Dundee Fixing device and applicator therefor
US9993349B2 (en) 2002-06-27 2018-06-12 DePuy Synthes Products, Inc. Intervertebral disc
GB2392096A (en) * 2002-06-29 2004-02-25 Gareth Thomas Locking screw
US8945190B2 (en) 2002-07-19 2015-02-03 Interventional Spine, Inc. Method and apparatus for spinal fixation
US9713486B2 (en) 2002-07-19 2017-07-25 DePuy Synthes Products, Inc. Method and apparatus for spinal fixation
US9486307B2 (en) 2003-06-27 2016-11-08 Depuy Mitek, Llc Flexible tibial sheath
US7699893B2 (en) * 2003-06-27 2010-04-20 Ethicon, Inc. Flexible tibial sheath
US8956410B2 (en) 2003-06-27 2015-02-17 Depuy Mitek, Llc Flexible tibial sheath
US11039916B2 (en) 2003-06-27 2021-06-22 DePuy Synthes Products, Inc. Flexible tibial sheath
US8435293B2 (en) 2003-06-27 2013-05-07 Depuy Mitek, Inc. Flexible tibial sheath
US10278807B2 (en) 2003-06-27 2019-05-07 DePuy Synthes Products, Inc. Flexible tibial sheath
US8317863B2 (en) 2003-06-27 2012-11-27 Depuy Mitek, Llc Flexible tibial sheath
US10390963B2 (en) 2006-12-07 2019-08-27 DePuy Synthes Products, Inc. Intervertebral implant
US11432942B2 (en) 2006-12-07 2022-09-06 DePuy Synthes Products, Inc. Intervertebral implant
US10398566B2 (en) 2006-12-07 2019-09-03 DePuy Synthes Products, Inc. Intervertebral implant
US11497618B2 (en) 2006-12-07 2022-11-15 DePuy Synthes Products, Inc. Intervertebral implant
US11712345B2 (en) 2006-12-07 2023-08-01 DePuy Synthes Products, Inc. Intervertebral implant
US10583015B2 (en) 2006-12-07 2020-03-10 DePuy Synthes Products, Inc. Intervertebral implant
US11642229B2 (en) 2006-12-07 2023-05-09 DePuy Synthes Products, Inc. Intervertebral implant
US11660206B2 (en) 2006-12-07 2023-05-30 DePuy Synthes Products, Inc. Intervertebral implant
US11273050B2 (en) 2006-12-07 2022-03-15 DePuy Synthes Products, Inc. Intervertebral implant
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GB8607846D0 (en) 1986-04-30
GB8508710D0 (en) 1985-05-09

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