|Publication number||USRE31809 E|
|Application number||US 06/482,586|
|Publication date||22 Jan 1985|
|Filing date||6 Apr 1983|
|Priority date||10 Nov 1978|
|Also published as||CA1136504A, CA1136504A1, DE2964644D1, EP0011258A1, EP0011258B1, US4312336|
|Publication number||06482586, 482586, US RE31809 E, US RE31809E, US-E-RE31809, USRE31809 E, USRE31809E|
|Inventors||Giuseppina Danieletto, Giovanni De Bastiani, Giovanni Faccioli, Lodovico R. Brivio, Roberto Aldegheri, Andrea Cavazzana|
|Original Assignee||Orthofix S.R.L.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (14), Non-Patent Citations (2), Referenced by (80), Classifications (15)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to an apparatus for the external setting or securing of the parts of a fractured bone, said apparatus comprising an elongate central body member comprised of two parts which are mutually displaceable parallel to the longitudinal axis of said member, whereby each part of the central body member supports a clamping device for the pins to be inserted into a part of the bone, and having a pressing and tensioning device in engagement with both parts of the central body member for causing the mutual longitudinal displacement of the two parts of the central body member.
Known apparatus of this kind are relatively heavy and require considerable space. More particularly, such apparatus does not ensure that there is a desired certain clearance between the bone and the pins of the device inserted therein, and accordingly the stability of the bone securing apparatus is considerably reduced. Above all, with the apparatus being mounted on a fractured bone for a long time the repeated muscle contractions of the associated limb causes a slackening of such apparatus, which has an adverse effect on the strength of the apparatus and hence on the healing process.
The present invention has as an object to provide an improved apparatus of the type referred to above so that, even with long-term use such improved apparatus remains absolutely secure. Moreover, such improved apparatus is light weight and requires little space. More especially, any displacement between the bone and the improved apparatus along the axis of the pins should be impossible provided there is clearance between the bone and the pins. Furthermore, the pins are so formed that any play arising between the bone and the pins is prevented at the time of insertion of the pins into the bone. Even if the pins are mounted on both sides of the fracture surface of the bone in different planes, the apparatus should satisfactorily and durably locate the bone.
According to the present invention there is provided apparatus for the external setting or securing of the parts of a fractured bone, said apparatus comprising an elongate central body member which is comprised of two parts adapted to be mutually displaced parallel to the longitudinal axis of said member whereby each part of the central body member supports a clamping device for the pins to be inserted into a part of the bone, and having a pressing and tensioning device .Iadd.(e.g., a turnbuckle or a screw jack) .Iaddend.in engagement with both parts of the central body member, in which the two parts of the central body member are telescopically inserted one within the other, in which the clamping devices, by means of a universal ball joint, are mounted on the associated part of the central body member and the mutual position of the parts of the central body member is fixable by securing devices, in which the pressing and tensioning device is removably connected to the parts of the central body member and in which the pins, at least in the section insertable in the bone have an external thread.
By the combination of these features, an extremely simple, light weight apparatus requiring little space is provided which ensures an absolutely secure and durable mounting of the apparatus on the fractured bone. Location of the clamping devices supporting the pins by means of universal joints which may be fixed in any direction pivotal and rotatable and subsequently in the required securing position, permit a maximum adaptation of the apparatus to the bone to be set. Fixing of both parts of the central body member after setting the necessary pressure at the fracture point of the bone, permits a subsequent removal of the pressing and tensioning device, whereby the weight of the apparatus remaining on the limb to be put in splints and its space requirement are substantially reduced. Loosely fitting pins in the bone, which cause slackening of the whole apparatus during use, is prevented by the use of self-tapping external thread on the pins. Especially by this means occurrence of micro-fractures of the bone during insertion of the pins into the bone is prevented.
The present invention will be further illustrated by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic end view of an apparatus in accordance with the invention with partially interrupted pins, which are mounted on a partially interrupted bone, shown partially in elevation and partially in section;
FIG. 2 is a vertical section through the apparatus of FIG. 1, turned through 180° and having clamping devices which are turned through 90° relative to the axis of the apparatus;
FIG. 3 is an enlarged section through a ball joint of a clamping device;
FIG. 4 is a section, vertical to the longitudinal axis of the apparatus, taken on the line 4--4 of FIG. 2;
FIG. 5 is a schematic view of a tapered pin;
FIG. 6 is a schematic view of part of the thread of the tapered pin shown in FIG. 5;
FIGS. 7 and 8 show two alternative embodiments of a part of the thread of a tapered pin in accordance with the invention;
FIG. 9 is a schematic view of a tapered pin which is mounted in a suitable support member shown in section;
FIG. 10 is a section through a ball joint of a clamping device locatable by eccentric bolts;
FIG. 11 is a plan view of an end portion of the cylindrical part of the central body member;
FIG. 12 is a view from below of a quick-release connector collar for locating the ball joint relative to the central body member of the apparatus;
FIGS. 13, 14 and 15 show three embodiments of a securing device of the eccentric bolt;
FIG. 16 is a partially interrupted and partially sectioned view of a pin which is suited to receive a removable tip in the form of a drill;
FIG. 17 is a partial view of a part of a pin provided with a thread;
FIG. 18 is a view of a removable tip in the form of an auger; and
FIGS. 19, 20 and 21 are partial views of three pins which terminate in tips of different shapes.
The various Figures are drawn on different scales. Identical reference numerals are used to correspond to identical or equivalent parts in different Figures.
The apparatus in accordance with the invention has a central body member which is comprised of an outer cylinder 10 in which a rod 11 is telescopically inserted, said rod 11 having a head 12 and the outer surface of the rod 11 corresponding to the inner surface of the cylinder 10, in which cylinder is provided the receiving bearing of a bolt 13 of the pressing and tensioning device 14.
The upper part 15 of the head 12 is, in known manner, securely connected to a socket 16 which supports a spherical, segment-shaped, receiving seat for a ball 18, which ball, via a collar 19 and a rod 20 is secured to a fixed jaw 21 of a clamping device 17 supporting the pins. A threaded ring 22, which may be screwed onto the socket 16, anchors the ball 18 to the socket 16, whereby, however, before tightening the threaded ring 22, movements of the clamping device 17 relative to the longitudinal axis of the apparatus are permitted. The structure of the ball joint so formed is such that the center of rotation of ball 18 substantially lies on the longitudinal axis of the central body member as seen in FIG. 2. If the threaded ring 22 is screwed completely onto the socket 16 by means of a hook wrench, the projections of which may be inserted in the openings 23, the ball 18 may be secured against the socket 16; for greater reliability of location, screwbolts 24 are provided in the threaded ring 22, which, for example, may be tightened by a hexagonal spanner.
As soon as the shafts 25 of the pins are inserted in receiving seats 26, which are provided in the jaws of the clamping device 17, a displaceable jaw 27 is tightened against the fixed jaw 21 by means of screws 28.
In the base of the cylinder 10, similarly to the device on the head 12, the receiving seat of a bolt 13' of the pressing and tensioning device 14 is provided, whilst the lower part 15' of the cylinder 10 is securely connected to a socket 16'.
With reference to FIG. 5, it is to be observed that the pin has a shaft 25 and a tapered core 29 with a conical thread, said thread, as shown in detail in FIG. 6, having a spirally extending thread profile, the conicity corresponding to that of the core 29 and having a constant pitch, so that the projection of the thread relative to the core, the inclination of the walls of the thread and the width of the grooves are constant. A tapered pin having the aforesaid properties is able to eliminate clearance which results in certain circumstances, between the bone and the pin due to an enlargement of the receiving cavity for the pin, which is to attributed to a yielding of the walls of the cavity and also consequent upon the tension or pressure to which the apparatus is subjected. Thus, by simply screwing the pin in further to the extent required, removes the clearance or play created.
It is clear that according to this embodiment, both the core of the pin and the thread due to their conicity contribute to removal of the clearance or play.
With reference to FIG. 7, the core 30 of the pin shown is tapered whilst the thread 31 extends in the form of a cylindrical screw or helix. In such instance, the core of the pin predominantly contributes to the removal of the clearance. In the alternative embodiment of FIG. 8, the contrary is the case, because the core 32 is cylindrical, whilst the thread 33 extends as a conical screw or helix. Thus, in this case the removal of clearance or play depends predominantly upon the thread.
It is clear that the three types of pins may be used with a single clamping device, even when the function developed thereby differs from one pin to the other. As an alternative to the arrangement shown in FIG. 5, the pin may have a core and a thread as described in connection with FIGS. 6, 7 and 8 penetrating only in the zones of the outer regions of the bone, whereby, however, the invention is not changed as to its essential features.
Moreover, it is clear that without this having been shown in the drawings, a pin in accordance with the invention may be partly provided with a known cylindrical core having a thread in the form of a cylindrical screw, in which the core and/or the thread tapers.
Practical tests with screws in accordance with the invention, carried out in bones of average cortical compactness, have led to excellent results with screws having a shaft of 6 mm φ, having a core and/or thread with a conicity of 1:50, having a thread of 1.75 mm pitch, with an inclination of the walls of the thread of 60°, with a minimum width of groove of 0.69 mm and a thread depth of 0.75 mm, as shown in FIG. 6. However, it is to be understood that the present invention is not to be considered to be limited to such dimensions.
With particular reference to FIG. 9, the pins made as described above may have a shaft or a rod 34 which may be screwed into the cavity of a supporting member 35 which may be inserted between the jaws of the clamping device 17, so that the pins may be turned by a hook wrench, the hook of which may engage in openings 36, in order in this manner to remove the aforesaid clearance or play without having to slacken the jaws of the clamping device 17.
So as not to disturb the state of the installation during the removal of the clearance or play in the slightest way, it is extremely desirable that the pitch of the thread on the shaft corresponds accurately to the pitch of the thread in the core of the pin.
As soon as the pins are secured in the parts of the bone in planes above and below the fracture line, which may also differ from the sagital line or a plane extending through the longitudinal axis of the bone, the central portion of the apparatus is placed in a position in which its longitudinal axis extends parallel to the longitudinal axis of the bone, and the shafts of the pins or their supporting members are inserted into the receiving seats 26 of the jaws of the clamping devices 17, in order to subsequently secure the clamping devices relative to the central body member and the jaws of the clamping devices relative to the pins.
In this manner the apparatus is now in a position to exert pressure or tension on the bone by using the device 14, which device includes a hollow cylinder 37 to which the bolt 13' is secured at the lower end thereof, a second hollow cylinder 38 to which the bolt 13 is secured, a screw 39, the head 40 of which is mounted in the hollow cylinder 38 and a collar or sleeve 41 which is securely connected to a rod section 42 of the screw 39, the outer thread of which engages in the internal thread of the hollow cylinder 37. As soon as the bolts 13, 13' have been inserted in suitable cavities each formed in the parts 12 and 10, it suffices to screw in the screw 39 by actuating the head 40, in order, as required, to cause the mutual approach or separation of the parts 10 and 12 of the central body of the securing device with axial displacements of the rod 11 in the interior of the cylinder 10.
The rod 11, see in this connection FIG. 2, has a groove 43 formed therein in which a stop and fixing pin or plug 44 projects. This pin 44, see FIG. 4 in this connection, is securely connected to a screw 45, the outer thread of which engages in the internal thread which is provided at a suitable point in cylinder 10. Thus, by virtue of the pin 44 projecting into groove 43, each of the two parts 10 and 11 of the central body member will be fixed against rotation with respect to the other part during longitudinal displacement of the two parts.
As soon as the required pressure or tension, which may be checked by a measuring scale, which is not shown, but which may be mounted on the rod 11, has been attained the screw 45 is tightened and the pin 44 caused to press against the bottom of the groove 43 and, by friction, the parts 10 and 12 of the central body member of the apparatus are secured both longitudinally and rotatively relative to each other. The device 14 may therefore be removed from the apparatus in that it is slackened and then the bolts 13-13' pulled out of the corresponding receiving seats.
It is clear that the last-described securing device may be replaced by through bores in the rod 11 and on the cylinder 10, into which stop and securing bolts may be inserted without departing from the scope of the invention.
In accordance with FIGS. 10 to 12, a cylindrical pin 15" is mounted in the end 15' of the cylinder 10; the cylindrical pin has a central portion 15"' which is eccentric relative to its ends.
The end 15' continues in a hollow cylinder 115 having an annular projection 115', which at 115" is cut off along two parallel planes and which contact the surface of the hollow cylinder 115, whereby the severed positions 115" permit the insertion and the subsequent rotary movement of a quick-release connector collar or sleeve 22 having an annular cavity 22' which is adapted in form locking arrangement relative to the annular projection 115".
In the hollow cylinder 115, a cup or bowl 16' is mounted having a spherical cup-shaped receiving seat for the ball 18, which, via the collar 19 and the rod 20 is secured to the fixed jaw 21 of a clamping device supporting the pins, not shown, in accordance with the clamping device 17 shown in FIG. 1.
The lower part of cup 16' abuts against the eccentric part 15'" of the bolt 15", for which reason after mounting the collar or sleeve 22 on the hollow cylinder 115, and after rotating it by a quarter turn in order to bring the annular projection 115' and the cavity 22' into engagement, the ball 18 is held secure between cup 16' having the spherical cup-shaped surface and a ring 22".
The ball 18, whilst so retained, is still able to make a rotary movement, and is secured in any position in that the bolt 15" is rotated so that, with its eccentric part 15'", it presses the cup 16' against the ball 18 and the latter against the ring 22".
To increase the reliability of securing the ball 18, its outer surface may be partially or wholly provided with a knurling 18'; likewise the surfaces which come into contact with the ball 18 may also be provided with a knurling.
At one end of the bolt 15" a hexagonal depression 24 is provided, the necessary rotary movements being imparted by a hexagonal spanner.
As soon as the ball 18 has been secured, the position of the bolt 15" is fixable by means of a set screw 23' which, as shown in FIG. 13, is adapted to contact and fix the eccentric part 15"'. Such positioning may be assisted by securing the bolt 15" by a nut 24' and a lock nut 24", whereby a spring ring 24"', as shown by FIG. 14 is interposed, or by the tensional action of a screw 24", via spring ring or washer 24"' placed on the bolt 15" which cannot be laterally pulled out since the cup 16' prevents this and which with its lower part is supported on the eccentric part 15"', in accordance with FIG. 15.
In the pins which are to be used with the two-sided securing device as shown in FIG. 16, the shank or shaft 25 has a diameter which is slightly larger than that of the core 32 and the thread 33, so that an annular projection 25' forms a stop for the pin at the outer region of the bone, and it is clear that three pins inserted in front of or behind a fracture surface in such a manner that one thereof enters on the side into the bone opposite the other two, with their stops 25' prevent mutual displacements between bones and the apparatus along the axis of the pins, and thus even when in the region of the core 32 and/or the thread 33, a clearance between bone and pin should result.
Also shown in FIG. 16 is that on the free end of the shaft 25, the receiving set 25" is provided to secure the pin to a manual or electrical device for perforating the bone, for example, a drill, whilst at the other end the core 32 supports a receiving cone 32' for a tip adapted as a drill, which may be removed as soon as the pin is secured in the bone.
With reference to FIG. 18, a tip supports a tool cone 32" which is adapted in form locking manner to the receiving seat 32' and the latching or hooking bore 36 in order to enable it to be inserted in the conical receiving seat 32' by means of rotation with a hook wrench. This tip has the form of an auger and comprises a handle which terminates in a tapered screw 132 which has lateral helical cutting edges 132' with a substantially greater pitch and which define an open cavity 132" for receiving borings.
It is clear that the cavity 132" is so dimensioned that it can completely receive the borings and that it may partly also be provided in the interior of the tip itself.
With reference to FIG. 19, it is to be ascertained that a pin terminating in a rounded "tip" 10a can be inserted in a bone only when a corresponding bore has been formed therein prior thereto, whilst the pins in accordance with FIGS. 20 and 21 which terminate in a lance-shaped tip 11a or in a tapered tip 12a may be simply driven in.
Practical tests with pins having a fixed or removable tip, as shown in FIG. 18, have led to excellent results relating to avoiding micro-fractures by screwing in when the depth of thread is 1 mm, and have also led to excellent results with reference to preventing movement relative to the bones and the securing apparatus by stops which have a minimum projection relative to the thread part of 0.5 mm.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2121525 *||21 Feb 1936||21 Jun 1938||Casco Products Corp||Fender guide|
|US2346346 *||21 Jan 1941||11 Apr 1944||Roger Anderson||Fracture immobilization splint|
|US2382019 *||2 May 1944||14 Aug 1945||Miller Edwin August||Compound screw|
|US2612159 *||1 Mar 1949||30 Sep 1952||Marie B Collison||Trochanteric plate for bone surgery|
|US2702543 *||28 Nov 1952||22 Feb 1955||Pugh Helen G||Surgical fracture fixation device for the hips|
|US2760488 *||20 Apr 1955||28 Aug 1956||Robert B Pierce||Internal bone fixation apparatus|
|US3051169 *||5 Dec 1958||28 Aug 1962||Stille Werner Ab||Surgical screw connector|
|US3059948 *||17 Mar 1959||23 Oct 1962||Joseph Rogers Inc||Ball and socket joint|
|US3211405 *||30 Jan 1964||12 Oct 1965||Fey||Support for photographic instruments and the like|
|US3841769 *||24 Oct 1972||15 Oct 1974||Bowerman W||Angularly adjustable bracket|
|US3842825 *||12 Nov 1973||22 Oct 1974||Wagner R||Hip fixation device|
|US4059102 *||30 Sep 1976||22 Nov 1977||National Research Development Corporation||Bone securing devices|
|US4135505 *||14 Apr 1977||23 Jan 1979||National Research Development Corporation||Orthopaedic fracture fixing apparatus|
|US4187841 *||7 Jul 1978||12 Feb 1980||Knutson Richard A||Bone compression or distraction device|
|1||*||Webster s 3rd New International Dictionary, p. 1005 re grub screw .|
|2||Webster's 3rd New International Dictionary, p. 1005 re "grub screw".|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US5275599 *||18 Dec 1992||4 Jan 1994||Zbikowski Juan L||Biocompression external fixator for osteosynthesis|
|US5292322 *||1 Jul 1993||8 Mar 1994||Orthofix S.R.L.||Clamping coupling for an external fixator|
|US5304177 *||21 Jun 1993||19 Apr 1994||Dietmar Pennig||Auxiliary device for osteosynthesis|
|US5320623 *||15 Jul 1992||14 Jun 1994||Orthofix S.R.1.||Clamping coupling for an external fixator|
|US5376090 *||12 Nov 1993||27 Dec 1994||Orthofix S.R.L.||Clamping coupling|
|US5662648 *||11 Sep 1995||2 Sep 1997||Orthofix S.R.L.||Method and apparatus for the external setting of fractures|
|US5662650 *||12 May 1995||2 Sep 1997||Electro-Biology, Inc.||Method and apparatus for external fixation of large bones|
|US5743898||9 May 1996||28 Apr 1998||Electro-Biology, Inc.||Method and apparatus for external fixation of small bones|
|US5827282 *||6 Aug 1997||27 Oct 1998||Orthofix S.R.1.||Clamping coupling|
|US6162224||25 May 1999||19 Dec 2000||Acumed, Inc.||External fixator for repairing fractures of distal radius and wrist|
|US6171308||25 Aug 1997||9 Jan 2001||Kirk Jay Bailey||Method and apparatus for external fixation of large bones|
|US6171309||25 May 1999||9 Jan 2001||Acumed, Inc.||External fixator for repairing fractures of distal radius and wrist|
|US6409729||20 Nov 2000||25 Jun 2002||Synthes (Usa)||Clamp assembly for an external fixation system|
|US6423061||14 Mar 2000||23 Jul 2002||Amei Technologies Inc.||High tibial osteotomy method and apparatus|
|US6565564||14 Dec 2000||20 May 2003||Synthes U.S.A.||Multi-pin clamp and rod attachment|
|US6678562||14 Mar 2000||13 Jan 2004||Amei Technologies Inc.||Combined tissue/bone growth stimulator and external fixation device|
|US6840939 *||1 Mar 2001||11 Jan 2005||Orthofix S.R.L.||Axial external fixator|
|US7004943||14 Jun 2002||28 Feb 2006||Smith & Nephew, Inc.||Devices, systems, and methods for placing and positioning fixation elements in external fixation systems|
|US7041103||28 Mar 2003||9 May 2006||Synthes (Usa)||Multipin clamp and rod attachment|
|US7048735||4 Feb 2002||23 May 2006||Smith & Nephew||External fixation system|
|US7147639 *||2 Mar 2001||12 Dec 2006||Orthofix S.R.L.||Disposable external fixation device|
|US7261713||7 Oct 2002||28 Aug 2007||Synthes (Usa)||Adjustable fixator|
|US7507240||18 Mar 2005||24 Mar 2009||Ron Anthon Olsen||Adjustable splint for osteosynthesis|
|US7575575||18 Mar 2005||18 Aug 2009||Ron Anthon Olsen||Adjustable splint for osteosynthesis with modular components|
|US7588571||18 Mar 2005||15 Sep 2009||Ron Anthon Olsen||Adjustable splint for osteosynthesis with modular joint|
|US7608074||26 Jun 2003||27 Oct 2009||Smith & Nephew, Inc.||External fixation apparatus and method|
|US7645279||26 Jun 2008||12 Jan 2010||Haupt Bruce F||Bone fixation method|
|US7682362||1 Feb 2006||23 Mar 2010||Smith & Nephew, Inc.||Lockable orientation stylus|
|US7699848||28 Mar 2003||20 Apr 2010||Synthes Usa, Llc||Multipin clamp and rod attachment|
|US7731738||9 Dec 2005||8 Jun 2010||Orthopro, Llc||Cannulated screw|
|US7749224||7 Dec 2006||6 Jul 2010||Ebi, Llc||Foot plate fixation|
|US7758582||10 Jun 2003||20 Jul 2010||Smith & Nephew, Inc.||Device and methods for placing external fixation elements|
|US7846162||15 May 2006||7 Dec 2010||Sonoma Orthopedic Products, Inc.||Minimally invasive actuable bone fixation devices|
|US7887537||30 Jan 2003||15 Feb 2011||Smith & Nephew, Inc.||External fixation system|
|US7909825||21 Nov 2007||22 Mar 2011||Sonoma Orthepedic Products, Inc.||Fracture fixation device, tools and methods|
|US7914533||30 Nov 2006||29 Mar 2011||Sonoma Orthopedic Products, Inc.||Minimally invasive actuable bone fixation devices|
|US7942875||15 May 2006||17 May 2011||Sonoma Orthopedic Products, Inc.||Methods of using minimally invasive actuable bone fixation devices|
|US8075597 *||23 Sep 2005||13 Dec 2011||Applied Orthopaedics Llc||Apparatus for retaining vertebrae|
|US8287539||10 Jun 2009||16 Oct 2012||Sonoma Orthopedic Products, Inc.||Fracture fixation device, tools and methods|
|US8287541||10 Jun 2009||16 Oct 2012||Sonoma Orthopedic Products, Inc.||Fracture fixation device, tools and methods|
|US8382755||27 Jun 2007||26 Feb 2013||Smith & Nephew, Inc.||External fixation apparatus and method|
|US8382757||23 Jul 2007||26 Feb 2013||Synthes Usa, Llc||Adjustable fixator|
|US8439917||22 Feb 2011||14 May 2013||Sonoma Orthopedic Products, Inc.||Fracture fixation device, tools and methods|
|US8572849 *||20 Sep 2011||5 Nov 2013||Donald P. Clark||System and method of connecting surfaces in an irregular space or measuring an irregular space|
|US8834473||22 Mar 2010||16 Sep 2014||Smith & Nephew, Inc.||Lockable orientation instrument assembly|
|US8961516||13 Sep 2012||24 Feb 2015||Sonoma Orthopedic Products, Inc.||Straight intramedullary fracture fixation devices and methods|
|US9060820||13 Sep 2012||23 Jun 2015||Sonoma Orthopedic Products, Inc.||Segmented intramedullary fracture fixation devices and methods|
|US9089343||14 Sep 2012||28 Jul 2015||Smith & Nephew, Inc.||Locking instrument assembly|
|US9113961 *||9 May 2013||25 Aug 2015||Zimmer Spine||Bone anchor|
|US9155574||28 Sep 2009||13 Oct 2015||Sonoma Orthopedic Products, Inc.||Bone fixation device, tools and methods|
|US9259250||11 Apr 2013||16 Feb 2016||Sonoma Orthopedic Products, Inc.||Fracture fixation device, tools and methods|
|US9770272||14 Mar 2014||26 Sep 2017||Wright Medical Technology, Inc.||Orthopedic compression/distraction device|
|US9770278||6 Jan 2015||26 Sep 2017||Arthrex, Inc.||Dual tip guide wire|
|US9814499||22 Sep 2015||14 Nov 2017||Arthrex, Inc.||Intramedullary fracture fixation devices and methods|
|US20020164905 *||26 Jun 2002||7 Nov 2002||Amei Technologies Inc., A Delaware Corporation||Osteotomy guide and method|
|US20030069580 *||7 Oct 2002||10 Apr 2003||Langmaid Michael N.||Adjustable fixator|
|US20030125736 *||1 Mar 2001||3 Jul 2003||Daniele Venturini||Axial external fixator|
|US20030139744 *||2 Mar 2001||24 Jul 2003||Sandor Berki||Disposable external fixation device|
|US20030149430 *||14 Jun 2002||7 Aug 2003||Joseph Ferrante||Devices, systems, and methods for placing and positioning fixation elements in external fixation systems|
|US20030191468 *||28 Mar 2003||9 Oct 2003||Synthes U.S.A.||Multipin clamp and rod attachment|
|US20040138659 *||26 Jun 2003||15 Jul 2004||Ed Austin||External fixation apparatus and method|
|US20050119656 *||30 Jan 2003||2 Jun 2005||Joseph Ferrante||External fixation system|
|US20060179979 *||1 Feb 2006||17 Aug 2006||Dees Roger R Jr||Lockable orientation stylus|
|US20060229602 *||18 Mar 2005||12 Oct 2006||Olsen Ron A||Adjustable splint for osteosynthesis|
|US20060229604 *||18 Mar 2005||12 Oct 2006||Olsen Ron A||Adjustable splint for osteosynthesis with modular components|
|US20060229605 *||5 Dec 2005||12 Oct 2006||Olsen Ron A||Adjustable splint for osteosynthesis with incrementing assembly for adjustment in predetermined increments|
|US20060264950 *||15 May 2006||23 Nov 2006||Nelson Charles L||Minimally Invasive Actuable Bone Fixation Devices|
|US20060264951 *||15 May 2006||23 Nov 2006||Nelson Charles L||Minimally Invasive Actuable Bone Fixation Devices Having a Retractable Interdigitation Process|
|US20060264952 *||15 May 2006||23 Nov 2006||Nelson Charles L||Methods of Using Minimally Invasive Actuable Bone Fixation Devices|
|US20070072459 *||23 Sep 2005||29 Mar 2007||Stahurski Consulting Inc.||Apparatus for retaining vertebrae|
|US20070162028 *||9 Dec 2005||12 Jul 2007||Jesse Jackson||Cannulated screw|
|US20070233105 *||30 Nov 2006||4 Oct 2007||Nelson Charles L||Minimally invasive actuable bone fixation devices|
|US20070255280 *||27 Jun 2007||1 Nov 2007||Smith & Nephew, Inc.||External fixation apparatus and method|
|US20080132896 *||21 Nov 2007||5 Jun 2008||Sonoma Orthopedic Products, Inc.||Curved orthopedic tool|
|US20080140078 *||21 Nov 2007||12 Jun 2008||Sonoma Orthopedic Products, Inc.||Surgical tools for use in deploying bone repair devices|
|US20080149115 *||21 Nov 2007||26 Jun 2008||Sonoma Orthopedic Products, Inc.||Surgical station for orthopedic reconstruction surgery|
|US20080161805 *||21 Nov 2007||3 Jul 2008||Sonoma Orthopedic Products, Inc.||Fracture fixation device, tools and methods|
|US20120143191 *||17 Dec 2007||7 Jun 2012||Brian Foote||Joint fixator|
|US20130231704 *||9 May 2013||5 Sep 2013||Zimmer Spine||Bone anchor|
|WO1995024161A1 *||15 Dec 1994||14 Sep 1995||Orthofix S.R.L.||Orthopaedic device, especially for the gradual correction of fractures|
|U.S. Classification||606/57, 403/137, 403/90, 403/56|
|International Classification||A61B17/64, A61B17/66, A61B17/86|
|Cooperative Classification||Y10T403/32754, Y10T403/32311, A61B17/86, A61B17/6458, Y10T403/32032, A61B17/66|
|European Classification||A61B17/64K, A61B17/66|