EP1833393A1 - Plaque d'osteosynthese, par exemple plaque de tete radiale ou humerale, comprenant une pluralite d'orifices destines a recevoir des vis a os - Google Patents

Plaque d'osteosynthese, par exemple plaque de tete radiale ou humerale, comprenant une pluralite d'orifices destines a recevoir des vis a os

Info

Publication number
EP1833393A1
EP1833393A1 EP05825701A EP05825701A EP1833393A1 EP 1833393 A1 EP1833393 A1 EP 1833393A1 EP 05825701 A EP05825701 A EP 05825701A EP 05825701 A EP05825701 A EP 05825701A EP 1833393 A1 EP1833393 A1 EP 1833393A1
Authority
EP
European Patent Office
Prior art keywords
plate
thread
bone
spherical
head
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Withdrawn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
EP05825701A
Other languages
German (de)
English (en)
Inventor
Arnd Ehrhardt
Ulrich Finger
Frank Orschler
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.)
Koenigsee Implantate und Instrumente zur Osteosynthese GmbH
Original Assignee
Koenigsee Implantate und Instrumente zur Osteosynthese GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36084192&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1833393(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Koenigsee Implantate und Instrumente zur Osteosynthese GmbH filed Critical Koenigsee Implantate und Instrumente zur Osteosynthese GmbH
Publication of EP1833393A1 publication Critical patent/EP1833393A1/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Withdrawn legal-status Critical Current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
    • 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 or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
    • A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread

Definitions

  • Osteosynthesis plate such as radius or humeral head plate, with a variety of holes for receiving bone screws
  • the invention relates to an osteosynthesis plate, such as radius or humerus head plate, with a plurality of holes for receiving bone screws, wherein at least some of the holes provided with an internal thread and / or at least one passage slot is arranged in the plate, which also has one on his longitudinal and / or transverse axis may have conical shape, according to the preamble of claim 1.
  • the local plate includes holes for receiving bone screws, at least some of the holes are provided with an internal thread. Furthermore, at least two of the holes are partially interlocking and overlapping. These overlapping bores each have a conical internal thread, wherein the respective interlocking bores are arranged in the longitudinal direction and / or transverse direction of the plate or at a predetermined radius.
  • an osteosynthetic bone plate which has a plurality of longitudinally arranged round and / or elongated holes for receiving bone screws.
  • the arranged in this known bone plate holes have a conical thread
  • the screw head of the bone screws also has a conical, but external thread.
  • At least one hole of the plate known from DE 43 41 980 Al has parallel to the plate longitudinal axis extending an elongated shape, wherein the end-side radii have different dimensions.
  • the remote from the bone fracture point radius is made smaller than the radius of the fracture site facing.
  • the elongated hole is still conical and provided with a circumferential internal thread.
  • the conicity of this hole again corresponds to that of the screw head of a corresponding bone screw.
  • the plate holes are conical and preferably provided with an internal thread.
  • the screws used to fix the plate have a tapered head, preferably with conical outer thread on.
  • the screws are screwed through the plate holes in a conventional manner in the bone.
  • the conical screw head braces in the conical plate bore, this effect being assisted by the preferably introduced threads.
  • This aforementioned bracing is essential if the screw is to be used only unikortal and the plate does not rest on the bone surface.
  • the conical helical shape and a corresponding conical connection is advantageous in that the threads wedge together when tightened. This wedging reduces the risk of unintentional loosening of the plate / screw connection with corresponding recurring, cyclic loads.
  • the prior art is still referred to the screw for osteosynthesis according to DE 200 22 673 Ul.
  • the screw used there has a substantially conical section in the longitudinal direction.
  • a ring is provided, whose outer surface has a spherical or spherical segment shape and which is open at one point or is severed.
  • a recess in the form of a bore is provided for supporting the ring.
  • a bearing ring fastened in the bore is provided, wherein the inner surface of the bearing ring has a shape complementary to the outer surface of the ring, so that the ring arranged in the bearing ring is movable like a ball joint.
  • the ring is spreadable by a conical portion of the screw, whereby the outer surface of the ring can be pressed against the inner surface of the bearing ring, so that a setting of the angular position of the screw to the implant possible w) he screw used is preferably as Tibialopfschraube with a cancellous bone, as a support screw formed with a cortical thread or condyle screw with a conical thread on the head.
  • the condylar screw can be bolted to a nut to form a compression screw.
  • EP 1 143 867 B1 shows a fixation system for bones for use in osteosynthesis, wherein bone screws with bone and the connecting beam, ie the plate, bridges the gap.
  • the means for fixing have a threaded connection formed by screwing the bone screw at a certain angle from a preformed thread below at least one of the seat surfaces below the seats of bone screw and connecting bracket.
  • the threaded connection is formed by a preformed thread below the one seat and at least one at least partially encircling, deformable by screwing in the preformed thread projection below the other seat.
  • the seats themselves can be made spherical or conical.
  • a seat is formed according to EP 1 143 867 Bl on the underside of a screw head of the bone screw. It always takes place in the fixation system for bone according to EP 1 143 867 Bl always a laborious transformation between the materials of different hardness, and to the extent that not only a force in the sense of a frictional connection, but also a material bond (friction welding) is formed.
  • the space for attaching or providing holes or holes in r Osteosyntheseplatte is basically limited.
  • the number, but also the size of the holes can not be chosen arbitrarily, otherwise an inadmissible weakening of the stability of the plate occurs. It would therefore, in order to be prepared for all applications, a variety of plates with different hole configurations should be kept. This, too, causes an extensive storage with higher costs.
  • the osteosynthesis plate to be created is intended to allow an angle-stable screw connection with head locking screws as well as fixation with conventional spherical screws both at almost any point and therefore be usable in a multivalent manner.
  • the object of the invention is achieved with an osteosynthesis plate according to the feature combination according to claim 1, wherein the dependent claims represent at least expedient refinements and developments.
  • the basic idea of the invention is accordingly to superimpose the profiles of holes with conical thread and usual spherical cross-section, so that a combined hole for implants arises, which is suitable for screwing either in angularly stable manner with head locking screws or even with spherical cap screws.
  • the combined hole in the lower, near-bone plate area is designed as an angle-stable hole.
  • the hole In the upper part of the plate, the hole has a shape for receiving conventional spherical cap screws.
  • the at least one passage slot is formed as a compression hole and has a circumferential, conical thread, wherein in a portion in the bone distant region of the slot a spherical Eins (ig is introduced, there is the possibility of either this area for screwing with or but to use without compression of the corresponding bone fragments.
  • the bores are suitable for receiving bone screws with both a head thread and a spherical head and have a thread shape in the area close to the bone and a spherical recess in the area remote from the bone.
  • the thread forming portion and the depression portion are concentric with each other or concentric with each other.
  • the thread forming section is designed as a preferably conical thread.
  • the countersink depth for obtaining the spherical shape is set equal to or smaller than the thickness of the respective plate.
  • the combined holes or holes with spherical recess and thread forming portion are preferably formed in the shank region of the plate.
  • At least two holes with spherical recess and thread forming section can be made interlocking and laterally overlapping.
  • the indentation to obtain the spherical shape is designed such that the spherical head of the screw which comes to rest herein is nearly flush with the plate surface or plate top.
  • the degree of depression of the ball is selected so that in the Einsenkungsend- position, the distance of the ball center of the bone near plate side in the range between 0.9 and 1.2 times the radius of the ball, preferably at the 1.0 to l, lfachen.
  • the degree of depression of the ball in the initial position is in turn chosen so that the distance of the ball center from the bone near plate side is greater than in the end position, but smaller than the sum of the plate thickness or plate thickness and the spherical radius, but preferably at 1, 1- to l, 3 times the radius is.
  • Fig. 1 is a cross-sectional view of a large fragment plate with combi hole, wherein in the left part of a screw with a conical head is located in the hole, however, is shown in the right part of the picture, as a screw with conventional spherical head is in a screwed position in the corresponding hole ;
  • FIG. 2 shows a detailed representation of a cross section through a large fragment plate with a running combination hole
  • FIG. 3 shows an illustration of a small fragment plate with a recognizable spherical depression, which can be seen in the lower part of the picture, for forming the combination hole;
  • Fig. 5 is a view similar to FIG. 4, but with a slot, which is designed as an angle stable, dynamic compression hole both for angle-stable screws and screws with a spherical head bottom.
  • an osteosynthesis plate 1 has a crescent-shaped cross section.
  • the plate is e.g. in a shaft part (not shown) a plurality of bores located on the longitudinal axis.
  • the holes are suitable according to the invention for receiving bone screws with both head thread and spherical head.
  • the bore has a thread shape, preferably designed as a conical thread 3, on.
  • a spherical recess is formed, wherein the thread-forming portion and the countersinking portion in a spherical shape concentric over one another and partially merge into each other, as Fig. 1 makes clear.
  • the thus formed combination hole is therefore both suitable to receive a screw with a threaded head 6 and a screw with a spherical head 7, without any changes to the plate, rework or the use of a special screw is necessary.
  • the depression depth for obtaining the spherical shape is equal to or slightly smaller than the plate thickness selected.
  • An exemplary dimensioning for a large fragment plate with inventive combination hole is shown in FIG. 2.
  • FIG. 4 which shows a combination hole for angle-stable screws or screws with a spherical head bottom, here the respective threaded portion is inserted in the lower half of the plate 1.
  • the contact surface of the spherical recess is enlarged relative to the complementary surface of a spherical head screw.
  • a passage-long hole according to Fig. 5 this is formed as a Kompn nsloch and has a circumferential conical thread 9 aur.
  • a spherical recess 5 is also introduced in this plate with there provided special hole in the bone distant area 4. Also with this plate, it is possible to use both conical head angle stable screws and conventional spherical head screws, without limiting the desired longitudinal compression of bone fragments.
  • the diameter of screw heads for use with the combi-holes according to the invention can be in the range between 1.0 mm and 12.0 mm.
  • the cone opening angle of the corresponding hole is in the range of 5 ° to 20 °, preferably 12 ° to 18 °.
  • the thread pitch, ie the distance from thread to thread is between 0.3 mm and 2.5 mm, preferably 0.5 mm to 2.0 mm.
  • compression paths in the range from 0.5 mm to 6.0 mm, preferably 1.0 mm to 5.0 mm, can be realized.
  • the recess for use with spherical head screws i. the ball portion is realized so that screw heads with a diameter of 1.0 mm to 12 mm, preferably in the range of 3.0 mm to 9 mm, can be used.
  • the depression in the top of the plate has a distance from the ball center of the lower, near-bone plate side greater than 0.9 times the radius of the ball and less than l, 2 times the radius, preferably 1.0 to l, lfache on.
  • the initial position is chosen so that in this case a distance of the ball center point from the lower bone near plate side is greater than in the end position, wherein the distance is smaller than the sum of the plate thickness and the radius, preferably at 1, 1 to 1, 3 times the radius ,
  • any standard screw both spherical and conical, i. Threaded head, used.

Landscapes

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

Abstract

La présente invention concerne une plaque d'ostéosynthèse, en particulier une plaque de tête radiale ou humérale, comprenant une pluralité d'orifices destinés à recevoir des vis à os, au moins certains des orifices présentant un filetage intérieur et/ou au moins un trou de passage oblong étant pratiqué dans la plaque et pouvant également avoir une forme conique le long de son axe longitudinal et/ou de son axe transversal. Selon l'invention, certains des orifices, pour pouvoir recevoir des vis à os comprenant aussi bien un filetage de tête qu'une une tête sphérique, présentent une forme filetée dans la zone proche de l'os, et un espace creux sphérique dans la zone éloignée de l'os, la section à forme filetée et la section d'espace creux étant superposées ou disposées l'une dans l'autre de façon concentrique. La section à forme filetée peut être réalisée pour former un filetage conique.
EP05825701A 2004-12-30 2005-12-14 Plaque d'osteosynthese, par exemple plaque de tete radiale ou humerale, comprenant une pluralite d'orifices destines a recevoir des vis a os Withdrawn EP1833393A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004063595 2004-12-30
DE102005004841A DE102005004841B4 (de) 2004-12-30 2005-02-02 Osteosyntheseplatte mit einer Vielzahl von Bohrungen zur Aufnahme von Knochenschrauben
PCT/EP2005/013456 WO2006072379A1 (fr) 2004-12-30 2005-12-14 Plaque d'osteosynthese, par exemple plaque de tete radiale ou humerale, comprenant une pluralite d'orifices destines a recevoir des vis a os

Publications (1)

Publication Number Publication Date
EP1833393A1 true EP1833393A1 (fr) 2007-09-19

Family

ID=36084192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05825701A Withdrawn EP1833393A1 (fr) 2004-12-30 2005-12-14 Plaque d'osteosynthese, par exemple plaque de tete radiale ou humerale, comprenant une pluralite d'orifices destines a recevoir des vis a os

Country Status (5)

Country Link
US (1) US20080119894A1 (fr)
EP (1) EP1833393A1 (fr)
DE (1) DE102005004841B4 (fr)
RU (1) RU2397725C2 (fr)
WO (1) WO2006072379A1 (fr)

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ES2298921T3 (es) * 2005-12-23 2008-05-16 Aap Implantate Ag Placa osea.
DE102006031801A1 (de) * 2006-07-06 2008-01-10 Aap Implantate Ag Osteosynthesisches Fixationssystem
DE202006019220U1 (de) 2006-12-19 2007-05-24 Zrinski Ag Orthopädisches Schraubenverschlusssystem
FR2917596B1 (fr) * 2007-06-21 2010-06-18 Newdeal Kit de fixation a usage medical ou chirurgical
EP2340776B1 (fr) 2007-07-26 2013-01-30 Biedermann Technologies GmbH & Co. KG Dispositif de fixation pour os
CA2699243A1 (fr) * 2007-09-12 2009-03-19 Cendres+Metaux Sa Agencement pour former une construction de barre et vis de fixation appropriee
EP2248479B1 (fr) * 2009-05-06 2012-09-19 Greatbatch Ltd. Ensemble formant une lame osseuse
JP2013512042A (ja) 2009-11-27 2013-04-11 シンセス ゲゼルシャフト ミット ベシュレンクテル ハフツング 遠位橈骨骨折のための平板固定構想
US20110218580A1 (en) 2010-03-08 2011-09-08 Stryker Trauma Sa Bone fixation system with curved profile threads
DE102010038949B4 (de) 2010-08-05 2018-01-04 Dieter Marquardt Medizintechnik Gmbh Osteosynthesevorrichtung
DE102010042930A1 (de) 2010-10-26 2012-04-26 Dieter Marquardt Medizintechnik Gmbh Osteosynthesevorrichtung
DE202011106835U1 (de) 2011-10-14 2012-02-06 Königsee Implantate GmbH Knochenplatte
CN103315802A (zh) * 2013-06-20 2013-09-25 中国人民解放军第一八四医院 压帽滑槽式万向锁定股骨髁钢板系统
US9510880B2 (en) * 2013-08-13 2016-12-06 Zimmer, Inc. Polyaxial locking mechanism
CN103598912A (zh) * 2013-11-28 2014-02-26 天津市康尔医疗器械有限公司 一种尺桡骨直形接骨板
US10226287B2 (en) 2014-03-31 2019-03-12 Association For The Advancement Of Musculoskeletal Bone plate with versatile screw holes
RU2661758C2 (ru) * 2016-05-25 2018-07-19 Михаил Васильевич Казарезов Винт для блокирующего остеосинтеза переломов костей опорно-двигательного аппарата
CN115844508B (zh) * 2023-02-22 2023-05-09 首都医科大学附属北京同仁医院 用于肱骨骨折微创治疗的解剖锁定钢板

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Also Published As

Publication number Publication date
US20080119894A1 (en) 2008-05-22
DE102005004841A1 (de) 2006-07-13
RU2397725C2 (ru) 2010-08-27
DE102005004841B4 (de) 2009-10-29
RU2007127909A (ru) 2009-02-10
WO2006072379A1 (fr) 2006-07-13

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