EP2066248A2 - Appareil chirurgical pour ostéosynthèse - Google Patents
Appareil chirurgical pour ostéosynthèseInfo
- Publication number
- EP2066248A2 EP2066248A2 EP07823488A EP07823488A EP2066248A2 EP 2066248 A2 EP2066248 A2 EP 2066248A2 EP 07823488 A EP07823488 A EP 07823488A EP 07823488 A EP07823488 A EP 07823488A EP 2066248 A2 EP2066248 A2 EP 2066248A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking sleeve
- sleeve
- plate
- hole
- screwed
- 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- Withdrawn
Links
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 210000000245 forearm Anatomy 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
- A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole
Definitions
- the present invention relates to a surgical apparatus for osteosynthesis, comprising a plate and a locking sleeve. It also relates to an apparatus further comprising a pin, the locking sleeve being intended to ensure a locking between the plate and the pin.
- This osteosynthesis device comprises a plate 2 having at least two holes, only one of which is shown in the figure, for receiving pins which are screwed into a bone part.
- the holes of the plate are threaded and receive an intermediate sleeve 6.
- This has a central orifice itself threaded whose axis zz 'is inclined at an angle ⁇ relative to its axis of revolution yy'.
- a locking sleeve 10 is screwed by a thread at its lower part in the intermediate sleeve.
- the practitioner After piercing the plate 2 in at least two locations chosen to ensure its fixation on the bone portion 4, performs a drilling of this bone part by guiding a forest perpendicular to the plaque. Then, it sets up the intermediate sleeve 6 and screws the threaded spindle 8 in the bone part to the desired length. It then introduces the locking sleeve 10 on the pin 8 and proceeds to screw this locking sleeve 10 into the intermediate sleeve 6.
- This device is effective but it has a number of disadvantages.
- the tolerance is low on the angular difference between the axes yy 'and zz'.
- the manufacture of the intermediate bushing is therefore delicate, which induces a high manufacturing cost.
- this angular difference if it allows to ensure effective blocking, has the disadvantage that this blockage already occurs from the beginning of the screwing of the locking sleeve 10. It may therefore happen that the locking sleeve does not penetrate that insufficiently in the plate 2.
- the intermediate sleeve and the locking sleeve must be inserted partially into the bone part to allow a good locking of the device. This does not make it possible to use this device of the prior art for the upper bones (arms, forearms, hands) which are too thin.
- the object of the invention is to overcome the limitations of the osteosynthesis devices of the prior art.
- the subject of the invention is a surgical osteosynthesis apparatus comprising a plate provided with at least two holes intended to join two bony parts and at least one substantially rotational locking sleeve intended to be screwed into one holes in the plate, said locking sleeve having an axial orifice for permitting the passage of a pin to be screwed into one of the bone parts, wherein: a lower part of the locking sleeve has a slot according to at least one of its rays, and
- said locking bushing and the associated hole threadably cooperate to lock the locking bush in the hole when the bushing is screwed into the hole.
- the slot of said locking sleeve is diametrical.
- said locking sleeve has in a lower part a smaller envelope than in an upper part.
- said locking sleeve has a conical or semi-hemispherical envelope.
- said locking sleeve has a cylindrical envelope and the hole a beveled envelope.
- said locking sleeve and the edges of the holes of the plate have a different hardness.
- one of said locking sleeve and an edge of the hole of the plate for receiving the sleeve is treated to increase its hardness, in particular by treating its carbon surface or by hardening.
- an intermediate sleeve is screwed into the hole of the plate and is intended to cooperate by threading with the locking sleeve.
- the apparatus according to the invention furthermore advantageously comprises a pin intended to be screwed into a bone part.
- the inner casing of the locking sleeve and the outer casing of the spindle are chosen so that the sleeve engages initially without friction with the spindle.
- FIG. 1 already described, illustrates a surgical osteosynthesis apparatus according to the prior art
- Figures 3 and 4 show respectively a side view and a bottom view of the locking sleeve of the apparatus of Figure 2,
- FIG. 5 represents an alternative embodiment of the locking sleeve according to the invention.
- FIG. 6 illustrates another embodiment of a surgical osteosynthesis apparatus according to the invention.
- Figure 2 illustrates in section a surgical osteosynthesis apparatus according to the invention. It comprises a plate 2 provided with two holes (only one of which has been shown) intended each to receive a pin 8 to screw into a bone part 4.
- the apparatus may also comprise an intermediate sleeve 6. This, although not essential to the invention, is advantageous in that it allows a better dimensional control of the hole receiving the locking sleeve, that if the locking sleeve 10 were screwed directly into the hole made by the practitioner in the plate 2.
- the locking sleeve comprises at least one slot in its lower part.
- the locking sleeve may comprise 4 slots as shown in the side view of FIG. 3 (only two slots are visible) or in the bottom view of FIG.
- intermediate sleeve 6 and the locking sleeve 10 threadably cooperate when the locking sleeve is screwed into the hole defined by the intermediate sleeve.
- the locking sleeve 10 is provided in its upper part with a gripping means 12 adapted to be rotated by means of a screwdriver. This forms a top tool but is not part of the surgical fixation apparatus 1 after it was set up. After the bushing has been screwed in, its upper part is sheared off at a circular area of least resistance 14.
- each of the two sockets has a thread. We understand that this is not an obligation. It suffices that one of the bushings has a thread and that the other bushing is in a softer material so that the thread bit in this other bush.
- non-hardened 316L steel which has a tensile strength of the order of 45 kg / mm 2
- the other sleeve hardened 316L steel which has a tensile strength of the order of 145 kg / mm.2. It is also possible to use the same steel for the two sleeves and to harden one of them, at least in its part intended to cooperate with the other bushing, by a carbon treatment.
- the locking sleeve 10 has starting from its lower face (that facing the bone portion) and upwardly an outer envelope that grows.
- the diameter D2 of the locking sleeve in its lower part is smaller than the diameter D3 in its upper part.
- the casing of the socket may be conical or hemispherical.
- variable casing of the locking bushing 10 can be obtained either by using a variable diameter bushing and a constant threading, as shown in FIG. 2, or by using a constant diameter bush but with a progressive thread, this is that is, the thread is radially larger in the upper part of the bushing than in the lower part thereof, as shown in FIG.
- FIG. 6 shows another embodiment of an apparatus according to the invention comprising a plate 2, a pin 8 screwed into a bone part 4, and a locking sleeve 10 having a slot 16 which, in the example shown, extends over the entire height of this sleeve.
- the hemispherical shape of the locking sleeve is particularly interesting in that it allows a effective blocking even when the spindle is not perpendicular to the plane of the plate.
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0607873A FR2905589B1 (fr) | 2006-09-08 | 2006-09-08 | Appareil chirurgical pour osteosynthese. |
PCT/FR2007/001450 WO2008029032A2 (fr) | 2006-09-08 | 2007-09-07 | Appareil chirurgical pour ostéosynthèse |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2066248A2 true EP2066248A2 (fr) | 2009-06-10 |
Family
ID=37966469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07823488A Withdrawn EP2066248A2 (fr) | 2006-09-08 | 2007-09-07 | Appareil chirurgical pour ostéosynthèse |
Country Status (9)
Country | Link |
---|---|
US (2) | US20100042161A1 (fr) |
EP (1) | EP2066248A2 (fr) |
JP (1) | JP5456472B2 (fr) |
CN (1) | CN101522125A (fr) |
BR (1) | BRPI0716591A2 (fr) |
CA (1) | CA2662767A1 (fr) |
FR (1) | FR2905589B1 (fr) |
MX (1) | MX2009002573A (fr) |
WO (1) | WO2008029032A2 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9615866B1 (en) | 2004-10-18 | 2017-04-11 | Nuvasive, Inc. | Surgical fixation system and related methods |
FR2905589B1 (fr) * | 2006-09-08 | 2009-04-17 | Alexandre Worcel | Appareil chirurgical pour osteosynthese. |
FR2924918B1 (fr) * | 2007-12-13 | 2010-09-03 | Alexandre Worcel | Douille de blocage pour un dispositif d'osteosynthese et dispositif d'osteosynthese comprenant une telle douille |
US8556943B2 (en) * | 2007-12-13 | 2013-10-15 | Alexandre Worcel | Lock ring for osteosynthesis device and osteosynthesis device including such ring |
FR2926975B1 (fr) * | 2008-02-01 | 2010-03-26 | Alexandre Worcel | Dispositif d'osteosynthese a moyens de fixation rapides |
USD734853S1 (en) | 2009-10-14 | 2015-07-21 | Nuvasive, Inc. | Bone plate |
FR2975889B1 (fr) * | 2011-06-06 | 2013-07-05 | Alexandre Worcel | Dispositif d'osteosynthese a plaque et broches |
US9510880B2 (en) | 2013-08-13 | 2016-12-06 | Zimmer, Inc. | Polyaxial locking mechanism |
FR3112678B1 (fr) * | 2020-07-27 | 2022-11-11 | Newclip Int | Dispositif d’ostéosynthèse comprenant au moins une broche de fixation |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3891477A (en) * | 1971-09-09 | 1975-06-24 | Mangrove Enterprise Inc | Material treatment by cryogenic cooling |
FR2632029B1 (fr) * | 1988-05-30 | 1990-09-07 | Surer Patrick | Dispositif de fixation d'une piece sur un support notamment d'un implant sur un os |
SE509703C2 (sv) * | 1995-02-07 | 1999-03-01 | Sven Olerud | Två anordningar för låsning av två implantatelement till varandra |
AU6269598A (en) * | 1997-02-28 | 1998-09-18 | Sofamor Danek Properties, Inc. | Recessed drive fastener and cooperable driving tool |
US5954722A (en) * | 1997-07-29 | 1999-09-21 | Depuy Acromed, Inc. | Polyaxial locking plate |
US5904683A (en) * | 1998-07-10 | 1999-05-18 | Sulzer Spine-Tech Inc. | Anterior cervical vertebral stabilizing device |
US6235033B1 (en) * | 2000-04-19 | 2001-05-22 | Synthes (Usa) | Bone fixation assembly |
DE50107716D1 (de) * | 2001-12-24 | 2005-11-17 | Synthes Ag | Vorrichtung für die osteosynthese |
FR2849766B1 (fr) * | 2003-01-15 | 2005-03-18 | Christian Dongar | Dispositif de blocage d'une broche d'osteosynthese dans une piece osseuse |
US7235101B2 (en) * | 2003-09-15 | 2007-06-26 | Warsaw Orthopedic, Inc. | Revisable prosthetic device |
US20040204712A1 (en) * | 2003-04-09 | 2004-10-14 | Eric Kolb | Bone fixation plates |
US7270679B2 (en) * | 2003-05-30 | 2007-09-18 | Warsaw Orthopedic, Inc. | Implants based on engineered metal matrix composite materials having enhanced imaging and wear resistance |
US6945975B2 (en) * | 2003-07-07 | 2005-09-20 | Aesculap, Inc. | Bone fixation assembly and method of securement |
ATE494846T1 (de) * | 2003-08-08 | 2011-01-15 | Synthes Gmbh | Klemmvorrichtung |
FR2905589B1 (fr) * | 2006-09-08 | 2009-04-17 | Alexandre Worcel | Appareil chirurgical pour osteosynthese. |
US8556943B2 (en) * | 2007-12-13 | 2013-10-15 | Alexandre Worcel | Lock ring for osteosynthesis device and osteosynthesis device including such ring |
FR2926975B1 (fr) * | 2008-02-01 | 2010-03-26 | Alexandre Worcel | Dispositif d'osteosynthese a moyens de fixation rapides |
-
2006
- 2006-09-08 FR FR0607873A patent/FR2905589B1/fr not_active Expired - Fee Related
-
2007
- 2007-09-07 US US12/440,382 patent/US20100042161A1/en not_active Abandoned
- 2007-09-07 WO PCT/FR2007/001450 patent/WO2008029032A2/fr active Application Filing
- 2007-09-07 MX MX2009002573A patent/MX2009002573A/es active IP Right Grant
- 2007-09-07 JP JP2009527176A patent/JP5456472B2/ja not_active Expired - Fee Related
- 2007-09-07 CA CA002662767A patent/CA2662767A1/fr not_active Abandoned
- 2007-09-07 BR BRPI0716591-9A2A patent/BRPI0716591A2/pt not_active IP Right Cessation
- 2007-09-07 CN CNA2007800333385A patent/CN101522125A/zh active Pending
- 2007-09-07 EP EP07823488A patent/EP2066248A2/fr not_active Withdrawn
-
2010
- 2010-08-10 US US12/853,597 patent/US20110060371A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2008029032A3 * |
Also Published As
Publication number | Publication date |
---|---|
JP2010502335A (ja) | 2010-01-28 |
CA2662767A1 (fr) | 2008-03-13 |
FR2905589A1 (fr) | 2008-03-14 |
US20110060371A1 (en) | 2011-03-10 |
BRPI0716591A2 (pt) | 2013-12-03 |
WO2008029032A2 (fr) | 2008-03-13 |
CN101522125A (zh) | 2009-09-02 |
FR2905589B1 (fr) | 2009-04-17 |
US20100042161A1 (en) | 2010-02-18 |
MX2009002573A (es) | 2009-10-28 |
JP5456472B2 (ja) | 2014-03-26 |
WO2008029032A3 (fr) | 2009-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20090403 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LAUMONIER, NICOLAS Owner name: WORCEL, JULIA Owner name: LAUMONIER, BRUNO Owner name: PAOLI, EDOUARD Owner name: LAUMONIER, YVES Owner name: PAOLI, ALBERT Owner name: LAUMONIER, REMI Owner name: WORCEL, MANUEL Owner name: PAOLI, MYRIAM Owner name: WORCEL, ALEXANDRE Owner name: LAUMONIER, ALAIN Owner name: LOMBARDO-FIAULT, BERNARD Owner name: ATELIERS LAUMONIER, SOCIETE PAR ACTIONS SIMPLIFIEE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: PAOLI, EDOUARD Inventor name: PAOLI, ALBERT Inventor name: LAUMONIER, REMI Inventor name: LAUMONIER, ALAIN Inventor name: WORCEL, JULIA Inventor name: LAUMONIER, NICOLAS Inventor name: PAOLI, MYRIAM Inventor name: LAUMONIER, YVES Inventor name: WORCEL, ALEXANDRE Inventor name: LAUMONIER, BRUNO Inventor name: ATELIERS LAUMONIER, SOCIETE PAR ACTIONS SIMPLIFIEE Inventor name: WORCEL, MANUEL Inventor name: LOMBARDO-FIAULT, BERNARD |
|
17Q | First examination report despatched |
Effective date: 20130612 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20150401 |