EP1631200A1 - Agrafe a os - Google Patents

Agrafe a os

Info

Publication number
EP1631200A1
EP1631200A1 EP03729756A EP03729756A EP1631200A1 EP 1631200 A1 EP1631200 A1 EP 1631200A1 EP 03729756 A EP03729756 A EP 03729756A EP 03729756 A EP03729756 A EP 03729756A EP 1631200 A1 EP1631200 A1 EP 1631200A1
Authority
EP
European Patent Office
Prior art keywords
legs
bridge
clamp according
bone clamp
bone
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.)
Withdrawn
Application number
EP03729756A
Other languages
German (de)
English (en)
Inventor
Florian Beutter
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.)
Synthes GmbH
Original Assignee
Synthes AG Chur
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Synthes AG Chur filed Critical Synthes AG Chur
Publication of EP1631200A1 publication Critical patent/EP1631200A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/064—Surgical staples, i.e. penetrating the tissue
    • A61B17/0642—Surgical staples, i.e. penetrating the tissue for bones, e.g. for osteosynthesis or connecting tendon to bone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00867—Material properties shape memory effect

Definitions

  • the invention relates to a bone clamp according to the preamble of claim 1.
  • Bone clips are already known from the prior art, which consist of a memory metal alloy and have a transition temperature in the range of the body temperature.
  • the disadvantage of these bone clips is the need to either freeze the bone clip in the refrigerator or to heat the bone clip after implantation with a special heating device (e.g. a coagulator), which can lead to necrosis.
  • the invention seeks to remedy this.
  • the invention has for its object to provide a bone clip, which exerts a compression effect on the bone fragments connected to the bone clip solely due to its elastic deformation - brought about by means of a suitable instrument.
  • the bone clip according to the invention can also be made from a memory metal alloy; however, their function is based solely on the elastic deformation of the clamp, so that neither cooling nor heating the bone clamp is necessary.
  • the invention solves the problem with a bone clip, which has the features of claim 1.
  • Another advantage lies in the fact that the legs of the bone clamp are inserted into the bone fragments in a parallel state, so that a uniform distribution of the compression force along the two legs is ensured.
  • the bridge of the bone clamps is preferably elliptical, but a rhombus-shaped or diamond-shaped bridge can also be used.
  • the bone clamp consists of a material that has a non-linear stress-strain diagram.
  • the bone clip can advantageously be made from a memory metal alloy, preferably from a nickel-titanium alloy, but without its compression effect being based on the memory effect.
  • the memory metal alloy can have a transition temperature of higher than 50 ° C, preferably higher than 80 ° C. Typically that is
  • the bone clip can in particular consist of a nickel-titanium alloy, wherein
  • Such a material is particularly biocompatible and highly elastic.
  • the bone clamp can also be made of a nickel-free, elastic material be made, which is advantageous for nickel allergy sufferers.
  • the bone clip can also consist of a plastic, preferably polyether ether ketone (PEEK) or a carbon fiber reinforced PEEK. This has the advantage that the bone clamp can also be used for people with nickel allergies.
  • PEEK polyether ether ketone
  • the two free ends of the two legs of the bone clamp are either pointed or blunt.
  • the blunt design requires pre-drilling, the blunt bone clamp can also be used bicortically and no soft parts are injured.
  • the cross section of the two legs of the bone clamp can also taper towards their free ends.
  • the cross section of the two legs is non-circular, preferably rectangular.
  • the cross-section of the two legs should advantageously be at most 2.0 mm, preferably at most 1.6 mm in each direction and / or at most 2.5 mm 2 , preferably at most 2.0 mm 2 , in order thereby to be less invasive.
  • the two legs In the compressed state of the bridge, the two legs should advantageously be able to exert a compression force of at most 1 MPa.
  • the two legs should expediently have one when the bridge is compressed
  • the width of the bridge in the compressed state should be at most 6 mm, preferably at most 5 mm. This makes the bone clamp less invasive, especially when used in the hand, foot and face area, i.e. in places where there are only a few soft tissues and a wider clamp could lead to soft tissue irritation.
  • the preferred dimensioning also has cosmetic advantages because larger clips would be applied under the skin.
  • the two legs of the bone clamp can be three-dimensionally structured Have surface, preferably in the form of transverse ribs or transverse grooves. This prevents the bone clamp from slipping out after implantation.
  • pliers are suitable as an instrument for the elastic deformation of the bone clamp, which comprises means for simultaneously compressing the bridge and deforming the bridge, such that the two legs of the bone clamp are at a greater distance from one another and at the same time are oriented essentially parallel to one another.
  • the pliers can also be designed such that the distance between the two legs is increased and their parallel alignment takes place independently of one another.
  • the two legs can also be aligned in parallel at their upper end - shortly before the transition to the bridge - without the bridge having to be bent out of its plane (i.e. facing away from the legs). This can be done, for example, using a suitable pliers-shaped instrument.
  • Figure 1 is a schematic, perspective view of the bone clamp according to the invention in the untensioned state.
  • Fig. 2 shows the clamp of Fig. 1 in the tensioned state, as it is used in two bone fragments.
  • the bone clamp 1 shown in FIG. 1 is in the untensioned state. It has two legs 2, 3, which each have a free end 4, 5 and a rear end 6, 7, the two rear ends 6, 7 being connected to one another via an elastically deformable bridge 8.
  • the two legs 2, 3 define a level 9, which corresponds to the drawing level.
  • the two legs 2, 3 converge in such a way that their two free ends 4, 5 are closer together than their two rear ends 6, 7.
  • the free ends 4, 5 of the two legs 2, 3 are designed such that they are pointed so that they are suitable for insertion into a bone.
  • the free ends 4, 5 can, however, also be of blunt design, since pre-drilling generally takes place anyway.
  • the bridge 8 has essentially the shape of a closed curve, namely an ellipse, the two legs 2, 3 being attached to the end points of the major axis of the ellipse.
  • the bridge 8 designed as an ellipse lies essentially in a plane 10 which is perpendicular to the plane 9 of the two legs 2, 3.
  • the elliptical bridge 8 can be elastically deformed in such a way that the distance between the two rear ends 6, 7 of the two legs 2, 3 increases and at the same time the two legs 2, 3 are aligned essentially parallel, as shown in FIG 2 is shown.
  • the deformation of the bridge 8 takes place on the one hand by compressing the elliptical bridge 8 in the area between the two legs 2, 3 - as indicated by the two arrows 11 in the plane 10 - and on the other hand by bending the bridge 8 in the area of the the rear ends 6, 7 of the two legs 2, 3 against the direction of the free ends 4, 5 relative to the area between the two legs 2, 3 as indicated by the arrows 12 in the plane 9.
  • the compression of the bridge 8 in the direction of the arrows 11 causes the elliptical shape to flatten out, so that the distance between the two rear ends 6, 7 of the two legs 2, 3 is increased.
  • the bending of the bridge 8 in the direction of the arrows 12 leads to a spreading of the legs 2, 3 so that they are aligned parallel to one another.
  • the bone clamp 1 can be inserted into the adjacent bone fragments 12, 13 by means of the (not shown) tensioning instrument. If the tensioning instrument is now removed, the elastically deformed bone clamp 1 tries to return to its original undeformed shape. In this endeavor, the two legs 2, 3 exert a compressive force on the bone gap 14 lying between the two bone fragments 13, 16, as is indicated by the arrows 15 in the plane 9. This keeps the bone gap under constant compression, which promotes healing of the fracture.
  • Typical dimensions for the bone clamp according to the invention in the uncompressed state are: 5-20 mm for the length of the legs 2, 3 and 8-30 mm for the length of the bridge 8.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Rheumatology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne une agrafe à os (1) qui comprend deux branches (2, 3) présentant chacune une extrémité libre (4, 5) et une extrémité arrière (6,7), les deux extrémités arrière (6, 7) étant reliées ensemble au moyen d'une base déformable élastiquement (8) et les deux branches (2, 3) définissant un plan (9). A l'état non déformé de la base (8), les deux branches (2, 3) convergent de sorte que les deux extrémités libres (4, 5) sont plus proches l'une de l'autre que les deux extrémités arrière (6, 7). Selon l'invention, la base (8) n'est pas réalisée rectiligne et peut être déformée élastiquement de sorte que l'écart des deux extrémités arrière (6, 7) des deux branches (2, 3) s'accroît. On aligne les deux branches (2, 3) pratiquement parallèlement l'une par rapport à l'autre, de manière séparée ou simultanément, de sorte qu'on peut les introduire dans l'os.
EP03729756A 2003-06-11 2003-06-11 Agrafe a os Withdrawn EP1631200A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2003/000369 WO2004107991A1 (fr) 2003-06-11 2003-06-11 Agrafe a os

Publications (1)

Publication Number Publication Date
EP1631200A1 true EP1631200A1 (fr) 2006-03-08

Family

ID=33494581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03729756A Withdrawn EP1631200A1 (fr) 2003-06-11 2003-06-11 Agrafe a os

Country Status (9)

Country Link
US (1) US7867265B2 (fr)
EP (1) EP1631200A1 (fr)
JP (1) JP2006527002A (fr)
CN (1) CN1787782A (fr)
AU (1) AU2003240340A1 (fr)
BR (1) BR0318330A (fr)
CA (1) CA2529034A1 (fr)
TW (1) TW200507793A (fr)
WO (1) WO2004107991A1 (fr)

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US20090248090A1 (en) * 2007-12-28 2009-10-01 Pronto Products, Llc Rib bone tissue clamp
WO2009086397A2 (fr) * 2007-12-28 2009-07-09 Osteomed Spine, Inc. Dispositif et procédé de fixation à un tissu osseux
US8062297B2 (en) * 2008-07-24 2011-11-22 Biopro, Inc. Bone fixation apparatus and method of manufacture
US20100221088A1 (en) * 2009-01-01 2010-09-02 Nitzan Chamiel System and Method for a Flexible Pin
WO2011005508A2 (fr) 2009-06-23 2011-01-13 Osteomed Clamp pour tissu osseux
US8636772B2 (en) 2009-06-23 2014-01-28 Osteomed Llc Bone plates, screws, and instruments
JP5701880B2 (ja) 2009-08-10 2015-04-15 オステオメド リミテッド ライアビリティ カンパニー 棘突起固定移植片
US20230270435A1 (en) * 2011-07-27 2023-08-31 William Casey Fox Bone staple, instrument and method of use and manufacturing
US9743926B2 (en) * 2011-07-27 2017-08-29 William Casey Fox Bone staple, instrument and method of use and manufacturing
EP2765936B1 (fr) * 2011-10-10 2022-05-18 William Casey Fox Implant osseux à forme variable permettant une cicatrisation accélérée
FR2982142B1 (fr) * 2011-11-07 2013-11-29 Synchro Medical Agrafe pour osteosynthese
US20130158588A1 (en) * 2011-12-14 2013-06-20 Innospan Enterprises, Inc. Abdominoplasty Umbilicus Finder Device and Method
US8584853B2 (en) 2012-02-16 2013-11-19 Biomedical Enterprises, Inc. Method and apparatus for an orthopedic fixation system
FR2999069B1 (fr) * 2012-12-06 2016-03-11 In2Bones Agrafe de compression a jambes convergentes
US9281696B2 (en) * 2013-02-27 2016-03-08 Fu-Sheng Tsai Current steering circuit and current steering method for controlling branch current flowing through branch
DE102013110759A1 (de) 2013-09-27 2015-04-02 Merete Medical Gmbh Klammerimplantat zum Beeinflussen des Wachstums an Knochenbereichen benachbart zu einer Wachstumsfuge
US10085743B2 (en) 2013-04-04 2018-10-02 Aristotech Industries Gmbh Staple implant for influencing the growth in bone regions bordering an epiphyseal plate
FR3008302B1 (fr) * 2013-07-12 2016-12-09 Neosteo Agrafe de contention ou d'osteosynthese
US9924984B2 (en) 2013-12-20 2018-03-27 Crossroads Extremity Systems, Llc Polyaxial locking hole
US9408647B2 (en) 2014-02-27 2016-08-09 Biomedical Enterprises, Inc. Method and apparatus for use of a compressing plate
US10456131B2 (en) 2014-05-07 2019-10-29 Biomedical Enterprises, Inc. Method and apparatus for loading and implanting a shape memory implant
US10456130B2 (en) 2014-05-07 2019-10-29 Biomedical Enterprises, Inc. Method and apparatus for loading and implanting a shape memory implant
US11202626B2 (en) 2014-07-10 2021-12-21 Crossroads Extremity Systems, Llc Bone implant with means for multi directional force and means of insertion
JP2017529886A (ja) 2014-07-10 2017-10-12 クロスローズ エクストリミティ システムズ リミテッド ライアビリティ カンパニー 骨インプラントおよび挿入の手段
US9883897B2 (en) 2014-09-25 2018-02-06 Biomedical Enterprises, Inc. Method and apparatus for a compressing plate
US10285689B2 (en) * 2015-01-07 2019-05-14 Biomet C.V. Orthopedic implant for bone fixation
CA2989892C (fr) * 2015-07-13 2018-11-06 Crossroads Extremity Systems, Llc Plaques osseuses avec des elements dynamiques
JP6808723B2 (ja) 2015-09-03 2021-01-06 バイオメディカル エンタープライジーズ，インコーポレイテッド 弾性整形外科用インプラント及びその製造方法
US11864753B2 (en) 2017-02-06 2024-01-09 Crossroads Extremity Systems, Llc Implant inserter
EP3579762A4 (fr) 2017-02-07 2021-04-07 Crossroads Extremity Systems, LLC Implant à contre-couple
US10987101B2 (en) * 2017-12-22 2021-04-27 Ortho Solutions Holdings Limited Superelastic bone compression staple
US11109900B2 (en) 2018-11-29 2021-09-07 Gbr99 Ip, Llc Extramedullary compression and fixation device, system and method
US11523820B2 (en) 2020-01-29 2022-12-13 DePuy Synthes Products, Inc. Shape memory implants and a method and apparatus for the loading and implanting thereof
US11642124B2 (en) 2020-06-16 2023-05-09 Ortho Solutions Holdings Limited Reinforced bridge superelastic bone compression staple and inserter system
USD961081S1 (en) 2020-11-18 2022-08-16 Crossroads Extremity Systems, Llc Orthopedic implant

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Also Published As

Publication number Publication date
BR0318330A (pt) 2006-07-11
WO2004107991A1 (fr) 2004-12-16
TW200507793A (en) 2005-03-01
CA2529034A1 (fr) 2004-12-16
US20060142771A1 (en) 2006-06-29
CN1787782A (zh) 2006-06-14
JP2006527002A (ja) 2006-11-30
AU2003240340A1 (en) 2005-01-04
US7867265B2 (en) 2011-01-11

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