WO2014183223A1 - Implant for extra-cortical fracture stabilisation - Google Patents
Implant for extra-cortical fracture stabilisation Download PDFInfo
- Publication number
- WO2014183223A1 WO2014183223A1 PCT/CH2013/000084 CH2013000084W WO2014183223A1 WO 2014183223 A1 WO2014183223 A1 WO 2014183223A1 CH 2013000084 W CH2013000084 W CH 2013000084W WO 2014183223 A1 WO2014183223 A1 WO 2014183223A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- implant
- bone
- implant according
- contact
- grooves
- Prior art date
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
- A61B17/56—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
- A61B17/809—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with bone-penetrating elements, e.g. blades or prongs
-
- 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
- A61B17/82—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage
-
- 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
- A61B17/8085—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with pliable or malleable elements or having a mesh-like structure, e.g. small strips
Definitions
- the invention relates to an implant for osteosynthesis, in particular in humans, which is pressed by means of a wire, cable or tape to the bone by enclosing and connects in the specially trained contact zones on the underside of the implant with the bone under the contact pressure such that a displacement of the bone relative to the implant is prevented.
- Implants for osteosynthesis have been used for quite some time and in a variety of constructions in human and veterinary medicine.
- a very commonly used design is the plate with through holes for screwing in the bone.
- the fixation can be severely limited by screws just by this markraum religiousde implant.
- Osteoporosis and thin corticals in conjunction with a markraum diaryden implant represent the fracture supplies the greatest challenge dar.
- a known solution is the use of cerclages by means of wires, cables or bands for fixation of the plates on the bone instead of fixation by means of screws.
- This fixation is associated with a high failure rate due to the lack of rotational stability with the conventional plate systems.
- various plate inserts have been developed for improved guidance of the wires. In the process, such inserts screwed into the plate hole do not contribute to the rotational stability without direct bony contact. Inserts that require a unicortical borehole, while improving rotational stability, are at least partially afflicted with the aforementioned drawbacks of screws and, in addition, can not be sufficiently deep seated on thin cortical bone, compromising their stability.
- EP 0 355 035 B1 discloses an implant which has special points of contact between the implant and the bone, which define contact surfaces which are as small as possible when the implant is pressed against the bone.
- the aim of these defined points of contact is to keep the entire contact surface of the implant on the bone as low as possible, in order to allow a good circulation of the periosteum and thus of the bone.
- the disadvantage of this concept is that, firstly, only very few of these points of contact actually come into contact with the bone, and secondly, these points of contact do not have a defined surface for the support on the bone, which could hinder a displacement of the implant on the bone.
- the described disadvantages are solved by the implant according to the invention by increasing a multiplicity of contact points in their individual area and by forming a special surface in such a way that the surface engages in the bone under the contact pressure in the contact zones through the periosteum and thus a displacement of the implant prevented on the bone surface in all directions.
- the implant according to the invention by one or more contact zones of the implant are formed flat and have a special surface, which meshes by the engagement of several tips and / or teeth of this surface in the periosteum and the underlying bone, said teeth between the implant and the bone, the actual rotation and axis stable bone / implant interface forms. It shows:
- Fig. 1 is a schematic representation of an embodiment of the inventive implant in the form of a plate with a bottom which has special contact zones for contact with the bone.
- FIG. 2 shows a plan view of the underside of an implant according to the invention to illustrate the groove structures of one of the contact zones.
- Fig. 3 is a plan view of the top of an inventive implant, which can be absorbed by its cylindrical attachment in a plate.
- the embodiment of the implant (1) shown in FIG. 1 is one possible variant of many.
- This implant (1) allows both the common fixation by means of one or more bone screws (4) through the existing through holes for this purpose (40) and the fixation by Cerclage (2) which the implant (1) and the bone (3) together includes.
- the contact zones (11) projecting on the underside (10) of the illustrated implant (1) comprise a number of peaks and / or teeth (13) formed by grooves (12) notched in different directions with aligned elongated sharp edges (131).
- the top side (20) of the implant (1) may have grooves (21) which hold the cerclage (2) in position relative to the implant when the cerclage (2) engages in one of these grooves (21).
- the plan view shown in FIG. 2 of a contact zone (11) on the underside (10) of the implant (1) according to the invention illustrates how the teeth (13) are shaped by the shape (120) of the grooves (12) whose directions (121). and their pitches (122a-n) are formed between the grooves (12) of the same direction (121a-n).
- the teeth have no sharp points, but elongated sharp edges (131) in different directions (131a-n), on the one hand increases the contact surface of the individual teeth and on the other hand, the rotation and axis stability of the bone / implant interface is improved.
- the embodiment of the implant (1) shown in FIG. 3 additionally has a fixation element (50) formed on the upper side (20) by a cylindrical attachment (51), which is located in a hole of another implant (5), for example a commercially available one Plate, can be picked up.
- the implant (1) according to the invention can have fixation elements (50) of any shape for external or internal reception and stable fixation of other implants (5) of any shape, provided that the contact between the contact zones (11) on the underside (10) of the implant (FIG. 1) and the bone (3) do not affect.
- fixation elements (50) can be formed by the outer shape of the implant (1) itself or by specially provided inner or outer mold elements (51) on the top (20) or one or more side surfaces (30), or in one or a plurality of through holes (40).
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)
- Prostheses (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380076618.XA CN105228540A (en) | 2013-05-15 | 2013-05-15 | Implant for outer cortex fracture stabilization |
CA2911348A CA2911348A1 (en) | 2013-05-15 | 2013-05-15 | Implant for extracortical fracture stabilization |
AU2013389955A AU2013389955A1 (en) | 2013-05-15 | 2013-05-15 | Implant for extra-cortical fracture stabilisation |
PCT/CH2013/000084 WO2014183223A1 (en) | 2013-05-15 | 2013-05-15 | Implant for extra-cortical fracture stabilisation |
BR112015028601A BR112015028601A2 (en) | 2013-05-15 | 2013-05-15 | implant for fixation to the bone by pressure |
EP13727507.9A EP2996593A1 (en) | 2013-05-15 | 2013-05-15 | Implant for extra-cortical fracture stabilisation |
JP2016513186A JP2016517783A (en) | 2013-05-15 | 2013-05-15 | Implant for fracture stabilization outside the cortex |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2013/000084 WO2014183223A1 (en) | 2013-05-15 | 2013-05-15 | Implant for extra-cortical fracture stabilisation |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014183223A1 true WO2014183223A1 (en) | 2014-11-20 |
Family
ID=48577452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2013/000084 WO2014183223A1 (en) | 2013-05-15 | 2013-05-15 | Implant for extra-cortical fracture stabilisation |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2996593A1 (en) |
JP (1) | JP2016517783A (en) |
CN (1) | CN105228540A (en) |
AU (1) | AU2013389955A1 (en) |
BR (1) | BR112015028601A2 (en) |
CA (1) | CA2911348A1 (en) |
WO (1) | WO2014183223A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2846870A1 (en) * | 2002-11-07 | 2004-05-14 | Fixano | Osteosynthesis equipment for treatment of long ulna comprises plate drilled with holes for fixing by screws to bone parts, plate integral with leg, inserted in distal bone part, having end profile favoring bone penetration |
EP1477124A1 (en) * | 2003-05-12 | 2004-11-17 | C.H. Medical Limited | Fixation of fractured bones |
US20080234753A1 (en) * | 2007-03-19 | 2008-09-25 | Warsaw Orthopedic, Inc. | Spinal Stabilization Systems |
US20090287215A1 (en) * | 2008-05-15 | 2009-11-19 | Zimmer, Inc. | Cable button |
WO2012103164A1 (en) * | 2011-01-25 | 2012-08-02 | Synthes Usa, Llc | Expandable bone fixation implant |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5190545A (en) * | 1991-08-27 | 1993-03-02 | Pfizer Hospital Products Group, Inc. | Cerclage wire positioning insert |
DE69320593T2 (en) * | 1992-11-25 | 1999-03-04 | Codman & Shurtleff, Inc., Randolph, Mass. | Bone plate system |
US5741259A (en) * | 1996-02-22 | 1998-04-21 | Chan; Kwan-Ho | Surgical fastener device for use in bone fracture fixation |
JP4874970B2 (en) * | 2004-06-07 | 2012-02-15 | ジンテス ゲゼルシャフト ミット ベシュレンクテル ハフツング | Orthopedic implant with sensor |
GB2442189B (en) * | 2005-07-13 | 2010-11-17 | Acumed Llc | Bone plates with movable locking elements |
US7806911B2 (en) * | 2006-04-14 | 2010-10-05 | Warsaw Orthopedic, Inc. | Fixation plate and method of use |
CN102475573A (en) * | 2010-11-22 | 2012-05-30 | 山东超瑞施生物磁学工程技术研究中心 | Orthopaedic implant locking elastic bone fracture plate |
-
2013
- 2013-05-15 CN CN201380076618.XA patent/CN105228540A/en active Pending
- 2013-05-15 AU AU2013389955A patent/AU2013389955A1/en not_active Abandoned
- 2013-05-15 JP JP2016513186A patent/JP2016517783A/en active Pending
- 2013-05-15 WO PCT/CH2013/000084 patent/WO2014183223A1/en active Application Filing
- 2013-05-15 BR BR112015028601A patent/BR112015028601A2/en not_active IP Right Cessation
- 2013-05-15 EP EP13727507.9A patent/EP2996593A1/en not_active Withdrawn
- 2013-05-15 CA CA2911348A patent/CA2911348A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2846870A1 (en) * | 2002-11-07 | 2004-05-14 | Fixano | Osteosynthesis equipment for treatment of long ulna comprises plate drilled with holes for fixing by screws to bone parts, plate integral with leg, inserted in distal bone part, having end profile favoring bone penetration |
EP1477124A1 (en) * | 2003-05-12 | 2004-11-17 | C.H. Medical Limited | Fixation of fractured bones |
US20080234753A1 (en) * | 2007-03-19 | 2008-09-25 | Warsaw Orthopedic, Inc. | Spinal Stabilization Systems |
US20090287215A1 (en) * | 2008-05-15 | 2009-11-19 | Zimmer, Inc. | Cable button |
WO2012103164A1 (en) * | 2011-01-25 | 2012-08-02 | Synthes Usa, Llc | Expandable bone fixation implant |
Also Published As
Publication number | Publication date |
---|---|
EP2996593A1 (en) | 2016-03-23 |
AU2013389955A1 (en) | 2015-12-03 |
BR112015028601A2 (en) | 2017-07-25 |
CA2911348A1 (en) | 2014-11-20 |
JP2016517783A (en) | 2016-06-20 |
CN105228540A (en) | 2016-01-06 |
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