Source: http://www.google.com/patents/US6248109?dq=5,870,513
Timestamp: 2016-08-27 08:18:18
Document Index: 272120063

Matched Legal Cases: ['art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5', 'art 5']

Patent US6248109 - Implant for interconnecting two bone fragments - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsAn implant for fixing two bone fragments to each other comprises a clasp (4) with two arms (7) which are connected to each other at one of their ends and in this area form an eyelet with an opening (8) for passage of a screw (6) which can be screwed into one (3) of the two bone fragments. The free ends...http://www.google.com/patents/US6248109?utm_source=gb-gplus-sharePatent US6248109 - Implant for interconnecting two bone fragmentsAdvanced Patent SearchPublication numberUS6248109 B1Publication typeGrantApplication numberUS 09/509,423PCT numberPCT/EP1999/004630Publication dateJun 19, 2001Filing dateJul 2, 1999Priority dateJul 30, 1998Fee statusLapsedAlso published asEP1018962A1, WO2000006036A1Publication number09509423, 509423, PCT/1999/4630, PCT/EP/1999/004630, PCT/EP/1999/04630, PCT/EP/99/004630, PCT/EP/99/04630, PCT/EP1999/004630, PCT/EP1999/04630, PCT/EP1999004630, PCT/EP199904630, PCT/EP99/004630, PCT/EP99/04630, PCT/EP99004630, PCT/EP9904630, US 6248109 B1, US 6248109B1, US-B1-6248109, US6248109 B1, US6248109B1InventorsRudolf StoffellaOriginal AssigneeWaldemar Link (Gmbh & Co.)Export CitationBiBTeX, EndNote, RefManPatent Citations (4), Referenced by (70), Classifications (11), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetImplant for interconnecting two bone fragments
US 6248109 B1Abstract
An implant for fixing two bone fragments to each other comprises a clasp (4) with two arms (7) which are connected to each other at one of their ends and in this area form an eyelet with an opening (8) for passage of a screw (6) which can be screwed into one (3) of the two bone fragments. The free ends of the two arms (7) are introduced into the medullary cavity of the other bone fragment (2) and are anchored therein by spreading apart. To improve the anchoring of the clasp (4) on the bone fragment (3), a shim part (5) is arranged between the clasp (4) and the head (9) of the screw (6), which shim part (5) has a recess for receiving the clasp (4) and is provided with spikes (11) which penetrate into the bone fragment (3).
What is claimed is: 1. Implant for fixing two bone fragments (2, 3) to each other, in particular for fixing an axially corrected capitulum of a metatarsal bone, e.g. hallux valgus, which implant comprises a clasp (4) with two arms (7) which are connected to each other at one of their ends and in this area form an eyelet with an opening (8) for passage of a screw (6) which can be screwed into one (3) of the two bone fragments, and which, with their other, free ends, can be introduced into the other bone fragment (2), wherein a shim part (5), through which the screw (6) is passed, is arranged between the clasp eyelet and the screw head (9), which shim part (5) is provided with projections (11) which can be anchored in the bone fragment (3).
2. Implant according to claim 1, wherein the shim part (5) is in the shape of a circular annulus and the projections are designed as spikes (11) protruding essentially at right angles from the annular plane.
3. Implant according to claim 2, wherein the shim part has a recess receiving the clasp in the area of the eyelet and a lateral slot permitting passage of the arms of the clasp.
4. Implant according to claim 2, wherein the shim part comprises at least three projections.
5. Implant according to claim 2, wherein the shim part is made of a tissue-compatible material.
6. Implant according to claim 1, wherein the shim part (5) has a recess (12) receiving the clasp (4) in the area of the eyelet, and a lateral slot (13) for passage of the arms (7) of the clasp (4).
7. Implant according to claim 6, wherein the shim part comprises at least three projections.
8. Implant according to claim 6, wherein the shim part is made of a tissue-compatible material.
9. Implant according to claim 1, wherein the shim part (5) has at least three projections (11).
10. Implant according to claim 9, wherein the shim part is made of a tissue-compatible material.
11. Implant according to one of claim 1, wherein the shim part (5) is made of a tissue-compatible material.
The invention relates to an implant for fixing two bone fragments to each other, in particular for fixing an axially corrected capitulum of a metatarsal bone, e.g. hallux valgus.
To fix the osteotomy, it is already known to use plates which are secured to the cortical bone by means of a number of screws in order to prevent the bone fragments from buckling. A considerable surgical outlay is required for this.
Bone clamps are also known for fixing the osteoLomy, but their use involves the risk of splintering of the bone.
AT 937 U has disclosed an implant for fixing two bone fragments to each other, in particular for treating an axial deviation of a metatarsal bone, e.g. hallux valgus, which implant comprises a clasp with two arms which are connected to each other at one of their ends and in this area delimit an opening for passage of a screw which can be screwed into one of the two bone fragments and which, with their other, free ends, can be introduced into the medullary cavity of the other bone fragment and can spread apart. After osteotomy has been performed, the clasp is introduced proximally into the medullary cavity of one bone fragment via the free ends of the two arms and spreads apart in this medullary cavity, after which the clasp is anchored on the other bone fragment by means of the screw guided through the opening.
The object of the present invention is to improve and stabilize the fixing of this known implant to the one of the two bone fragments connected to the implant via the screw, without in so doing having to modify the surgical procedure. To achieve this object, the invention proposes that a shim part, through which the screw is passed, be arranged between the clasp opening and the screw head, which shim part has projections which can be anchored in the bone fragment. These projections provide for fixing of the clasp to the bone fragment in addition to the screw, as a result of which the stability is considerably improved. The shim part is preferably in the shape of a circular annulus and has spikes protruding essentially at right angles from the annular plane, which spikes penetrate or are pressed into the bone fragment and are thus securely anchored in the bone fragment.
A preferred embodiment of the implant according to the invention is characterized in that the shim part has a recess receiving the clasp with form fit in the area of the opening, and a lateral slot for passage of the arms of the clasp. This embodiment affords a form fit between the shim part and the clasp and thereby reliably prevents the clasp from twisting about the screw axis. The shim part is pressed onto the bone fragment (or vice versa) by the screw, preventing a change in the position of the spikes penetrating into the bone fragment. The invention makes it possible to connect the two bone fragments to each other in a stable manner directly without special bone incision.
It is expedient for the shim part to have at least three projections.
This shim part is preferably made of a tissue-compatible material, for example stainless steel according to ISO 5832/1.
An illustrative embodiment of the implant according to the invention is shown diagrammatically in the drawings. FIG. 1 shows the use of the implant according to the invention in the reconstruction of a hallux valgus. FIG. 2 is a plan view of the clasp forming part of the implant according to the invention, and FIG. 3 shows a side view of the individual parts of the implant according to the invention, in an exploded representation. FIG. 4 shows a bottom view of the shim part of the implant according to the invention, and FIG. 5 shows a section along the line V—V in FIG. 4.
In FIG. 1, a metatarsal bone 1 is represented following osteotomy and correction, the two bone fragments 2, 3 being fixed by means of an implant according to the invention. This implant according to the invention consists of a clasp 4, a shim part 5 and a bone screw 6.
As can be seen in particular from FIG. 2, the clasp 4 has two arms 7 which are connected to each other at one of their ends and there delimit an eyelet-shaped opening 8. When the bone fragments 2, 3 are being fixed, the free ends of the two arms 7 are introduced into the medullary cavity of the bone fragment 2 and there take up their spread-apart position shown in FIG. 2, as a result of which the clasp 4 is anchored in this medullary cavity. This anchoring is assisted by an undulating configuration preferably running in the plane of the arms.
The clasp 4 is then anchored in the bone fragment 3 by means of the bone screw 6 which is guided through the opening 8.
According to the invention, the shim part 5 is now arranged between the head 9 of the screw 6 and the clasp 4 in the area of the opening 8, which shim part 5 is of annular design and has an opening 10 whose diameter corresponds approximately to that of the opening 8. This diameter is smaller than the diameter of the head 9 of the screw 6, so that this head 9 bears on the shim part 5.
On the underside the shim part 5 has spikes 11 which, before the bone screw 6 is screwed into the bone fragment 3, are pressed into this bone fragment. The shim part 5 is provided with a recess 12 which is designed as an annular groove and which is adapted to the measurements of the eyelet part of the clasp 4 and receives this area of the opening 8, and it has a lateral slot 13 through which the arms 7 of the clasp 4 can emerge. In this way, the shim part 5 is connected to the clasp 4 with a form fit, and relative movement between the shim part 5 and the clasp 4 is prevented. The shim part 5 is anchored firmly and non-rotatably on the bone fragment 2 by means of the bone screw 6 and the spikes 11. As a result of the form-fit connection between the shim part 5 and the eyelet of the clasp 4, which is maintained between bone surface and screw head by the clamping of these parts, the clasp 4 is thus also prevented from moving relative to the bone fragment.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4838254 *Aug 17, 1987Jun 13, 1989Georges GauthierSurgical fastening clipUS4915092 *Jun 13, 1989Apr 10, 1990Interprinderea Industria Technico-MedicalaFlexible implants for stable flexible osteosynthesis of femoral tibia fractures and working instrumentationAT937U Title not availableEP0288229A1Apr 18, 1988Oct 26, 1988Dow Corning Wright CorporationShim for femoral knee joint prosthesis* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6379359 *May 5, 2000Apr 30, 2002University Of North Carolina At Chapel HillPercutaneous intrafocal plate systemUS6635087Aug 29, 2001Oct 21, 2003Christopher M. AngelucciLaminoplasty implants and methods of useUS6730090May 30, 2002May 4, 2004Hand Innovations, Inc.Fixation device for metaphyseal long bone fracturesUS7037308 *Feb 11, 2002May 2, 2006Medoff Robert JImplant device for applying compression across a fracture siteUS7160302Feb 28, 2003Jan 9, 2007Piper Medical, Inc.Intramedullary interlocking fixation device for the distal radiusUS7695502Sep 19, 2005Apr 13, 2010Depuy Products, Inc.Bone stabilization system including plate having fixed-angle holes together with unidirectional locking screws and surgeon-directed locking screwsUS7713271May 2, 2006May 11, 2010Piper Medical, Inc.Intramedullary interlocking fixation devices for the distal radiusUS7722611Mar 5, 2007May 25, 2010Depuy Products, Inc.Method of treating a clavicle fractureUS7727264 *May 9, 2003Jun 1, 2010Depuy Products, Inc.Intramedullary fixation device for metaphyseal long bone fracturesUS7780664Aug 24, 2010Depuy Products, Inc.Endosteal nailUS7780711Aug 24, 2010Depuy Products, Inc.Fixation system with multidirectional bone supportsUS7811286Mar 16, 2006Oct 12, 2010Robert J. MedoffImplant device for applying compression across a fracture siteUS7857838Sep 17, 2003Dec 28, 2010Depuy Products, Inc.Anatomical distal radius fracture fixation plateUS7905909Mar 15, 2011Depuy Products, Inc.Bone stabilization system including multi-directional threaded fixation elementUS8034056Oct 11, 2011Wright Medical Technology, Inc.Guide assembly for intramedullary fixation and method of using the sameUS8083783 *Apr 10, 2006Dec 27, 2011Swemac Innovation AbSurgical fixation pinUS8092453Jan 10, 2012Piper Medical, Inc.Intramedullary interlocking fixation devices for the distal radiusUS8100910Feb 24, 2009Jan 24, 2012Piper Medical, Inc.Intramedullary interlocking fixation devices for the distal radiusUS8277459Oct 2, 2012Tarsus Medical Inc.Methods and devices for treating a structural bone and joint deformityUS8343152Jan 1, 2013Toby Orthopaedics, Inc.Fixed angle dual prong pin fixation systemUS8394097Mar 14, 2008Mar 12, 2013Memometal TechnologiesOsteosynthesis deviceUS8403967Jun 25, 2010Mar 26, 2013Biomet C.V.Volar fixation system and methods of using the sameUS8414583Sep 2, 2009Apr 9, 2013Memometal TechnologiesResorptive intramedullary implant between two bones or two bone fragmentsUS8475456 *Apr 12, 2006Jul 2, 2013Memometal TechnologiesIntramedullar osteosynthetic device of two bone parts, in particular of the hand and/or footUS8556945Jun 1, 2010Oct 15, 2013Biomet C.V.Anatomical distal radius fracture fixation plate with ulnar buttressUS8579946Dec 20, 2010Nov 12, 2013Biomet C.V.Anatomical distal radius fracture fixation plateUS8608783May 8, 2008Dec 17, 2013The Cleveland Clinic FoundationBone plate with flange member and methods of use thereofUS8628533May 8, 2008Jan 14, 2014The Cleveland Clinic FoundationBone plate with reduction aids and methods of use thereofUS8652141Jan 21, 2010Feb 18, 2014Tarsus Medical Inc.Methods and devices for treating hallux valgusUS8652179May 2, 2008Feb 18, 2014The Cleveland Clinic FoundationBone plate extender and extension system for bone restoration and methods of use thereofUS8696719Jun 3, 2010Apr 15, 2014Tarsus Medical Inc.Methods and devices for treating hallux valgusUS8771283Dec 17, 2007Jul 8, 2014Wright Medical Technology, Inc.Guide assembly for intramedullary fixation and method of using the sameUS8795286Sep 6, 2012Aug 5, 2014Tarsus Medical Inc.Methods and devices for treating a structural bone and joint deformityUS8870876Feb 13, 2009Oct 28, 2014Tarsus Medical Inc.Methods and devices for treating hallux valgusUS8915918May 2, 2008Dec 23, 2014Thomas James GrahamBone plate system for bone restoration and methods of use thereofUS8945232Mar 15, 2013Feb 3, 2015Wright Medical Technology, Inc.Ball and socket implants for correction of hammer toes and claw toesUS8992528 *Jun 14, 2012Mar 31, 2015Amit GuptaIntramedullary system for managing a bone fractureUS9044287Oct 25, 2012Jun 2, 2015Wright Medical Technology, Inc.Hammer toe implant methodUS9072558Aug 14, 2013Jul 7, 2015Biomet C.V.Distal radius fracture fixation plate with ulnar buttressUS9072564Apr 13, 2011Jul 7, 2015Wright Medical Technology, Inc.Hammer toe implant and methodUS9138219Jul 15, 2011Sep 22, 2015Tarsus Medical Inc.Methods and devices for treating a syndesmosis injuryUS9161789May 13, 2013Oct 20, 2015Memometal TechnologiesOsteosynthesis deviceUS9168074Mar 12, 2013Oct 27, 2015Memometal TechnologiesResorptive intramedullary implant between two bones or two bone fragmentsUS9283007May 20, 2013Mar 15, 2016Stryker European Holdings I, LlcDevice for osteosyntheses or arthrodeses of two- bone parts, in particular of the hand and / or footUS20020143339 *Feb 11, 2002Oct 3, 2002Medoff Robert J.Implant device for applying compression across a fracture siteUS20030045935 *Aug 29, 2001Mar 6, 2003Angelucci Christopher M.Laminoplasty implants and methods of useUS20040010255 *Feb 28, 2003Jan 15, 2004Warburton Mark J.Intramedullary interlocking fixation device for the distal radiusUS20040153073 *Jan 22, 2004Aug 5, 2004Hand Innovations, Inc.Orthopedic fixation system including plate element with threaded holes having divergent axesUS20040193155 *Nov 29, 2003Sep 30, 2004Hand Innovations, Inc.Fracture fixation plate with particular plate hole and fastener engagement and methods of using the sameUS20040210222 *May 12, 2004Oct 21, 2004Angelucci Christopher M.Laminoplasty plates and methods of useUS20040260292 *Jul 23, 2004Dec 23, 2004Hand Innovations, Inc.Fixation system with multidirectional stabilization pegsUS20040260293 *Jul 23, 2004Dec 23, 2004Hand Innovations, Inc.Fixation system with multidirectional stabilization pegsUS20040260295 *Jul 23, 2004Dec 23, 2004Hand Innovations, Inc.Fixation system with multidirectional stabilization pegsUS20050065520 *Nov 10, 2004Mar 24, 2005Orbay Jorge L.Endosteal nailUS20050065528 *Nov 10, 2004Mar 24, 2005Orbay Jorge L.Method of endosteal nailingUS20050245931 *Jul 14, 2005Nov 3, 2005Orbay Jorge LVolar fixation systemUS20060015123 *Jul 15, 2004Jan 19, 2006Wright Medical Technology, Inc.Guide assembly for intramedullary fixation and method of using the sameUS20060041260 *Sep 30, 2005Feb 23, 2006Orbay Jorge LFixation system with plate having holes with divergent axes and multidirectional fixators for use therethroughUS20060189992 *Mar 16, 2006Aug 24, 2006Medoff Robert JImplant device for applying compression across a fracture siteUS20080177262 *Apr 12, 2006Jul 24, 2008Marc AugoyardIntramedullar Osteosynthetic Device of Two Bone Parts, In Particular of the Hand and/or FootUS20080221574 *Mar 5, 2007Sep 11, 2008Cesare CavallazziMethod of Treating a Clavicle FractureUS20080281363 *Apr 10, 2006Nov 13, 2008Michael UllmanSurgical Fixation PinUS20090036931 *Jul 23, 2008Feb 5, 2009Normed Medizin-Technik Vertriebs-GmbhFoot surgery bone plate, and system comprising bone plate and insertion aidUS20090275947 *Nov 5, 2009Thomas James GrahamBone plate system for bone restoration and methods of use thereofUS20090275987 *May 2, 2008Nov 5, 2009Thomas James GrahamBone plate extender and extension system for bone restoration and methods of use thereofUS20090281577 *Nov 12, 2009Thomas James GrahamBone plate with reduction aids and methods of use thereofUS20100131014 *Mar 14, 2008May 27, 2010Memometal TechnologiesOsteosynthesis deviceUS20110106081 *May 5, 2011Thomas James GrahamBone Plate with Flange Member and Methods of Use ThereofUS20110144644 *Sep 2, 2009Jun 16, 2011Memometal TechnologiesResorptive intramedullary implant between two bones or two bone fragmentsUS20130197518 *Jun 14, 2012Aug 1, 2013Amit GuptaIntramedullary system for managing a bone fracture* Cited by examinerClassifications U.S. Classification606/75, 606/327, 606/62International ClassificationA61B17/58, A61B17/56, A61F2/28, A61B17/68Cooperative ClassificationA61B17/68, A61B17/809, A61B2017/565European ClassificationA61B17/68Legal EventsDateCodeEventDescriptionMar 28, 2000ASAssignmentOwner name: WALDEMAR LINK (GMBH & CO.), GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:STOFFELLA, RUDOLF;REEL/FRAME:010786/0496Effective date: 20000228Jan 5, 2005REMIMaintenance fee reminder mailedJun 20, 2005LAPSLapse for failure to pay maintenance feesAug 16, 2005FPExpired due to failure to pay maintenance feeEffective date: 20050619RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services