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WO2013100707A1 - Plaque biodégradable et calblock pour la fixation d'un os - Google Patents

Plaque biodégradable et calblock pour la fixation d'un os Download PDF

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Publication number
WO2013100707A1
WO2013100707A1 PCT/KR2012/011763 KR2012011763W WO2013100707A1 WO 2013100707 A1 WO2013100707 A1 WO 2013100707A1 KR 2012011763 W KR2012011763 W KR 2012011763W WO 2013100707 A1 WO2013100707 A1 WO 2013100707A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
knife block
pin
biodegradable
bone fixation
Prior art date
Application number
PCT/KR2012/011763
Other languages
English (en)
Korean (ko)
Inventor
박종순
허찬영
Original Assignee
주식회사 글로원
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 주식회사 글로원 filed Critical 주식회사 글로원
Publication of WO2013100707A1 publication Critical patent/WO2013100707A1/fr

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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
    • 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
    • A61B17/8085—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
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
    • A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A61L31/148—Materials at least partially resorbable by the body
    • 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
    • A61B17/686—Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/866—Material or manufacture
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00004—(bio)absorbable, (bio)resorbable or resorptive
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone

Definitions

  • the present invention relates to a biodegradable plate and knife block for bone fixation.
  • the present invention relates to a biodegradable plate and a knife block for bone fixation, for example, a plate of metal, ceramic, and bioabsorbable material which has been used as a method of fixing bones in patients suffering from facial, skull, or bone tissue of the human body. It is intended to improve the shortcomings of the screw.
  • the metal materials that have been used to fix broken bones are strong in mechanical strength and stable to chemical reactions, but they remain solid after 4-8 weeks after the procedure. In this case, it may hinder the growth of the tissue, and if it is installed in the body for a long time, it may cause corrosion or its associated toxicity. Therefore, after the bone damage is treated, a procedure for removing the metal material may be required.
  • the ceramic material is a material having a very low side effect on the bone, but low impact strength is easy to break, difficult to deform the shape has a hassle to precise processing to fit the body of the operator.
  • US Pat. No. 4,655,777 discloses a method of laminating an organic ceramic material in a fibrous form, followed by lamination with an organic polymer, or solution coating.
  • these are also difficult to avoid molecular weight reduction in the process, it is difficult to achieve a significant improvement in strength due to defects such as bubbles generated during the manufacturing process, these fiber-reinforced composite materials are difficult to apply additional strength improvement process such as stretching.
  • the present invention increases the molecular weight as a method for increasing the strength of the bioabsorbable material for fixing the damaged bone, using a method of extrusion molding without producing a product by the injection method, stretched 4 to 8 times in the cooling process during extrusion
  • the tensile strength is increased by making the orientation of the polymer through the process.
  • the plates should have low elongation and good tensile strength in order to sufficiently serve to prevent gaps in the close bones.
  • the product produced by injection processing has a lower tensile strength than the product obtained by extrusion because the orientation of the polymer is irregular.
  • the molecular weight is high, the flowability is inferior, so injection processing is difficult, but the extrusion method is possible.
  • the structure of the screw that secures the plate also prevents the head part from being damaged by making a '-' or '+'-shaped groove in the head or not having a square or hexagonal groove.
  • the plate instead of the screw for fixing the plate, the plate can be fixed by inserting a knife block in which the column part opens and a high-strength pin inside the column, thereby shortening the procedure time and fixing the damaged bone without tapping. It can prevent damage.
  • FIG. 1 is a photograph showing an example of the procedure using a bone fixing plate and a knife block of the present invention.
  • Figure 2 is a real picture of the bone fixing plate and knife block of the present invention.
  • FIG. 1 is a perspective view showing the structure of a knife block and a pin according to the present invention.
  • the plate 10 and the knife block 20, which is the object of the present invention, are used to fix both sides of the cracked bone.
  • the plate 10 is a plate-like structure as shown in Fig. 2, for example, using polylactide, which is a bioabsorbable material, is extruded into a rod shape through a die of a known extrusion molding device, not shown, and then with a take-out roller. After stretching and pressing to obtain a plate-like structure, the plate-like structure is cut into sizes and shapes meeting a specification, and the hole 11 is processed by a drill to be completed.
  • the holes 11 are plural and are for fitting the knife block 20.
  • the knife block 20 is for inserting and fixing the bone through the hole 11 of the plate 10, using the same material, and is manufactured by processing the extrudate by the die. Referring to Figure 3, the knife block 20 has a pin groove 24 in the center of the body portion so as not to fall into the body portion is inserted into the bone, it will be pressed into a separate pin 30 as described below.
  • Polylactide which is mainly used as a bioabsorbable material for bone fixation, has a molecular weight of 150,000 to 250,000.
  • injection molding when the flowability worsens, curved portions or minute defects are generated, resulting in a decrease in strength.
  • the present invention is to avoid the conventional production method by injection molding the plate or screw to produce a plate by the method of hole processing after extrusion molding to increase the tensile strength and to have excellent properties with low elongation.
  • screws to fix the plate is fixed using a knife block and pin.
  • the polylactide in the form of a rod is obtained as a plate-like product by being stretched in the longitudinal direction and pressurized by the extraction roller.
  • the plate is obtained by cutting the obtained plate so as to meet the standard and carrying out hole processing using a drill. Therefore, it is possible to compensate for the weakness of the conventional injection molding method, which is weak, and to reduce costs by reducing mold cost and material loss generated during injection by making molds for each product type. .
  • the knife block 20 is placed in the hole of the plate without the hassle of tapping the bone and then the center of the knife block.
  • the plate is fixed to the bone by pressing the knife block head 21 of the gal block 20, the head diameter of the knife block 20 is the hole diameter of the plate 1 to 3 mm larger to prevent the plate from being separated, and when the pin 30 enters the knife block 20 and the pin groove 24 deeply, the expansion guide groove 23 of the knife block 20 opens and adheres to the bone. The knife block 20 will not fall out.
  • the length of the pin 30 is longer than the knife block 20 to enter the pin groove 24 and the remaining portion can be cut by a grip type cutter, nail cutter, a dedicated tool to minimize protrusion.
  • the body portion of the knife block 20 is formed with a protrusion 22 so that the knife block 20 inserted into the bone does not easily fall out, and the protrusion 22 has an orientation such as a fish hook, so that the insertion is easily performed, but the removal is performed. It has a directional so as not to be made well, the shape of the projections may be circumferential in the entire pillar of the knife block 20 or some sections may be broken, and may be raised in a dot shape.
  • the Kalbrook 20 material may be expanded by using a material having a relatively low molecular weight or using an elastic material among bioabsorbable materials (polylactide, polylactide mixture, polylactose glucose, polypeptide, polyacetate mixed composition, etc.).
  • Induction groove (23) is well opened to ensure good adhesion to the bone.
  • the material of the fin 30 is not particularly limited, it is preferable to disperse the nanoparticles so that the bending strength is excellent by different materials from the knife block 20. That is, when the pin 30 is inserted into the pin groove 24 of the knife block 20, a material having high molecular weight and high strength is used so as not to bend or break.
  • the pin 30 to give an angle of about 1 to 5 degrees to enter the expansion guide groove 23 of the knife block 20 can also be in the form of a polygonal cone, such as a cone, elliptical cone, triangular pyramid, square pyramid.
  • a spiral or a spiral projection partially disconnected from the outer circumferential surface of the pin 30.
  • the pin 10 is fixed to the knife block 20 to fix the plate, and then protrudes longer than the head of the knife block 20.
  • the pin 10 may be cut and finished with a grip type cutter, a nail cutter, a dedicated tool, or the like to minimize the protrusion thereof.

Landscapes

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

Abstract

La présente invention concerne une plaque biodégradable et un Calblock, pour la fixation d'un os, qui sont obtenus à partir d'un extrudat plutôt que par moulage par injection et qui présentent donc une résistance améliorée. La plaque biodégradable et le Calblock de la présente invention sont fixés par un procédé d'insertion de broche afin de réduire le temps pris par l'opération. La plaque biodégradable et le Calblock selon la présente invention peuvent réduire une lésion à une articulation osseuse par comparaison avec les vis classiques, permettant ainsi à l'opération d'être plus facilement effectuée d'une manière plus sûre.
PCT/KR2012/011763 2011-12-28 2012-12-28 Plaque biodégradable et calblock pour la fixation d'un os WO2013100707A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2011-0144198 2011-12-28
KR20110144198 2011-12-28

Publications (1)

Publication Number Publication Date
WO2013100707A1 true WO2013100707A1 (fr) 2013-07-04

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ID=48698039

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/011763 WO2013100707A1 (fr) 2011-12-28 2012-12-28 Plaque biodégradable et calblock pour la fixation d'un os

Country Status (1)

Country Link
WO (1) WO2013100707A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104139516A (zh) * 2014-06-30 2014-11-12 杨青芳 一种微型可吸收骨钉或骨板的成型加工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000185051A (ja) * 1998-11-03 2000-07-04 Ethicon Inc 生体適合性及び生体被吸収性を有する締結具
KR20010095427A (ko) * 2000-03-30 2001-11-07 김정식 생체분해성 뼈 접합 기구의 제조방법
JP2002505142A (ja) * 1998-03-06 2002-02-19 ビオンクス インプランツ オサケユイチア 生体適合性を有する変形可能な固定板
JP2002165803A (ja) * 2000-12-05 2002-06-11 Gunze Ltd 生体分解性骨プレート

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002505142A (ja) * 1998-03-06 2002-02-19 ビオンクス インプランツ オサケユイチア 生体適合性を有する変形可能な固定板
JP2000185051A (ja) * 1998-11-03 2000-07-04 Ethicon Inc 生体適合性及び生体被吸収性を有する締結具
KR20010095427A (ko) * 2000-03-30 2001-11-07 김정식 생체분해성 뼈 접합 기구의 제조방법
JP2002165803A (ja) * 2000-12-05 2002-06-11 Gunze Ltd 生体分解性骨プレート

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104139516A (zh) * 2014-06-30 2014-11-12 杨青芳 一种微型可吸收骨钉或骨板的成型加工方法

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