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WO2013078790A1 - 利用peek材料制成脑颅骨的工艺及专用设备及应用 - Google Patents

利用peek材料制成脑颅骨的工艺及专用设备及应用 Download PDF

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Publication number
WO2013078790A1
WO2013078790A1 PCT/CN2012/071370 CN2012071370W WO2013078790A1 WO 2013078790 A1 WO2013078790 A1 WO 2013078790A1 CN 2012071370 W CN2012071370 W CN 2012071370W WO 2013078790 A1 WO2013078790 A1 WO 2013078790A1
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WIPO (PCT)
Prior art keywords
peek material
skull
mold
peek
processing
Prior art date
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PCT/CN2012/071370
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English (en)
French (fr)
Inventor
黄登峰
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WUHAN CONSTANT SCIENCE AND TECHNOLOGY Ltd
Original Assignee
WUHAN CONSTANT SCIENCE AND TECHNOLOGY Ltd
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Priority claimed from CN201110386538.7A external-priority patent/CN102490350B/zh
Application filed by WUHAN CONSTANT SCIENCE AND TECHNOLOGY Ltd filed Critical WUHAN CONSTANT SCIENCE AND TECHNOLOGY Ltd
Priority to EP12853841.0A priority Critical patent/EP2786854B1/en
Publication of WO2013078790A1 publication Critical patent/WO2013078790A1/zh
Priority to US14/289,671 priority patent/US9750610B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L27/00Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/14Macromolecular materials
    • A61L27/18Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/28Bones
    • A61F2/2875Skull or cranium
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/3094Designing or manufacturing processes
    • A61F2/30942Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30948Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using computerized tomography, i.e. CT scans
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L2430/00Materials or treatment for tissue regeneration
    • A61L2430/02Materials or treatment for tissue regeneration for reconstruction of bones; weight-bearing implants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2071/00Use of polyethers, e.g. PEEK, i.e. polyether-etherketone or PEK, i.e. polyetherketone or derivatives thereof, as moulding material

Definitions

  • the present invention relates to a process for making a skull of a skull using a PEEK material, and to a special apparatus for making a process using the above-described process, and to the use of such a PEEK material in a human body. Background technique
  • titanium alloy mesh plates Most of the existing artificial skull defects are repaired by titanium alloy mesh plates.
  • the titanium alloy mesh plates have high strength, no toxicity, and good biocompatibility with the human body, but the titanium alloy mesh plate is a metal material.
  • Scientific research has found that titanium alloy stencils are electrochemically reacted in the human body, causing electrochemical corrosion.
  • the long-term in the human body will cause blackening of the tissue around the human titanium alloy stencil, and even necrosis, and due to electrochemical corrosion.
  • the surface of the titanium alloy mesh plate will have unevenness, and long-term implantation is extremely disadvantageous to the human body.
  • the Chinese patent number is 200410012852.9
  • the invention name is the preparation of composite artificial skull and its surface modification method
  • an artificial skull composite material is disclosed, which uses polydecyl methacrylate, bio carbon fiber or glass fiber, hydroxy phosphoric acid.
  • Stone micropowder or ⁇ -tricalcium phosphate micropowder composite, artificial skull was prepared by multi-layer composite and hot pressing technology.
  • bio-carbon fiber or fiberglass materials have not been certified by national authorities as human implant materials. Therefore, this material is still in the research and development stage and has not been implemented.
  • Polyetheretherketone (also known as PEEK) resin is a special engineering plastic with excellent performance. It has many significant advantages compared with other special engineering plastics.
  • polyetheretherketone (PEEK) resin The mechanical properties of polyetheretherketone (PEEK) resin are close to that of aluminum alloy, which can withstand almost all solvents except concentrated sulfuric acid. It can maintain its characteristics well under high dose ⁇ -ray irradiation conditions, at a high temperature of 180 °C. Excellent physical and mechanical properties are maintained under the conditions. In addition to these characteristics, the polyetheretherketone (PEEK) resin itself has the advantages of light weight, non-toxicity, corrosion resistance and the like.
  • PEEK has been approved by China and the US Food and Drug Administration as a human implant material (such as for interplanting materials, etc.)
  • PEEK profiles are used as human implant materials.
  • the existing processing method is mechanical cold processing.
  • the loss of PEEK materials is very large, and the loss of general materials is 70-90% or even more. At present, the material in the world can only be produced in the UK, and the price of PEEK implant materials is 300,000 yuan/kg.
  • a first object of the present invention is to overcome the deficiencies of the prior art described above and to provide a process for making a skull of a skull using PEEK material. It uses a combination of hot working and cold working to save material.
  • a second object of the present invention is to provide a special device for processing a skull of a PEEK material.
  • a third object of the invention is to provide an application of such a PEEK material.
  • a process for making a skull from a PEEK material characterized in that it comprises the following steps:
  • the heated PEEK material is placed in a multi-point control molding die for hot pressing processing, and the processing is completed to form a blank by stepwise cold determination;
  • the heating device divides and heats different parts of the material according to the temperature and deformation force required for the deformation of the original piece of the PEEK material according to the CT electronic data of the patient, and the portion with large deformation has a high heating temperature and a small deformation.
  • the heating temperature of the part is low.
  • the multi-point control molding die blank is spatially adjusted and positioned according to the CT electronic data by the needle module on the lower die controlled by the PLC, and the needle module on the upper die is correspondingly adjusted, and the heating is performed.
  • the original piece of good PEEK material is placed on the lower mold and molded into a mold.
  • the multi-point control molding die comprises an upper mold frame, an upper mold, a positioning device, a lower mold, a lower mold holder, and a mold base, wherein the upper mold is fixed on the upper mold base, and the lower mold frame is located on the mold base.
  • the lower mold is fixed on the lower mold frame, the lower end of the positioning device is fixed on the mold base, the upper mold frame is fixed on the positioning device, and the rear end of the upper mold frame is located in the sliding groove on the positioning device, the upper mold
  • Both the lower mold and the lower mold are composed of a plurality of needle modules, and the first PLC programming controller is connected to the needle module through the displacement sensor.
  • the positioning device is perpendicular to the mold base.
  • the lower mold frame is fixed on the mold base by a pin.
  • the heating device comprises an upper cover, an upper heater, a workpiece bracket, a lower heater and a base, wherein the workpiece bracket is located between the upper heater and the lower heater, and the upper heater Located in the middle of the upper cover, the lower heater is located in the middle of the base; the upper heater and the lower heater are each composed of a plurality of independently controlled small resistance wires, and the second PLC programming controller is connected to the small resistance wire through the temperature sensor.
  • the use of PEEK materials is characterized by its use in the preparation of brain skull materials.
  • the invention has the following advantages:
  • the molding process combining the hot forming and the cold working can save the expensive PEEK material to the greatest extent, so that the cost of the product can be controlled, the medical expenses of the patient can be greatly reduced, and the customized processing of the product can be realized.
  • the personalized production can make the human bones and materials well combined, and the material itself has good biocompatibility and no adverse reactions and other adverse reactions between the human body.
  • FIG. 1 is a schematic view showing the structure of a special apparatus for processing a skull of a PEEK material according to the present invention.
  • Fig. 2 is a top plan view showing the structure in which the front end positioning device is attached and the upper mold portion is removed in Fig. 1.
  • Figure 3 is a schematic view showing the structure of the control portion of the skull of the PEEK material.
  • Figure 4 is a schematic view showing the structure of the control portion of the brain skull of PEEK material during heating. detailed description
  • the present invention discloses a process for making a skull by using a PEEK material, which is characterized in that it includes the following Steps:
  • the heating device divides and heats different parts of the material according to the temperature and deformation force required for the deformation of the original piece of the PEEK material according to the CT electronic data of the patient, and the heating temperature is high in the portion where the deformation is large, and the heating temperature is low in the portion where the deformation is small ( This part is controlled by the second PLC programming controller and the temperature sensor and small resistance wire, as shown in Figure 4.
  • the multi-point control molding die blank is spatially adjusted and positioned according to CT electronic data by a needle-shaped module on a lower die controlled by a PLC, and correspondingly adjusts a needle-shaped module on the upper die, and the heated PEEK material is original. Place it on the lower mold and mold it (as shown in Figure 3).
  • a special device for processing a skull of a PEEK material comprising a multi-point control molding die and a heating device, characterized in that the multi-point control molding die comprises an upper die plate 11, an upper die 12, a positioning device 13, and a lower die 14,
  • the needle module 18 is composed, and the first PLC programming controller 19 is connected to the needle module (18) via the displacement sensor 20.
  • the positioning device 13 is perpendicular to the mold base 16.
  • the lower formwork 15 is fixed to the mold base 16 by pins 17.
  • the heating device comprises an upper cover 21, an upper heater 22, a workpiece bracket 23, a lower heater 24 and a base 25.
  • the workpiece bracket 23 is located between the upper heater 22 and the lower heater 24,
  • the heater 22 is located at a central portion of the upper cover 21, and the lower heater 24 is located at a central portion of the base 25.
  • the upper heater 22 and the lower heater 24 are each composed of a plurality of independently controlled small resistance wires 28, and the second PLC is programmed.
  • the device 26 is connected to the small resistance wire 28 via a temperature sensor 27, as shown in Figs. 1, 2, 3, and 4. Example
  • the heated PEEK material is placed in a multi-point control molding die for hot pressing processing, and the processing is completed to gradually form a blank to form a blank;
  • the finished product is machined to the desired shape and size; the finished product is cleaned, disinfected and aseptically packaged.
  • the heating device divides the different parts of the material according to the temperature and deformation force required for the deformation of the original piece of PEEK material according to the CT electronic data of different dogs.
  • the heating temperature is high in the part with large deformation, and the heating temperature is low in the part with small deformation (this part) Controlled by the second PLC programming controller and temperature sensor and small resistance wire, as shown in Figure 4).
  • the multi-point control molding die blank is spatially adjusted and positioned according to the CT electronic data by the needle-shaped module on the lower die controlled by the PLC, and the needle-shaped module on the upper die is correspondingly adjusted, and the heated PEEK material original piece is placed under the blank.
  • the mold is machined (as shown in Figure 3).
  • the dog was craniotomy according to the pre-set position, part of the skull was taken out, and then the dog was repaired with the PEEK material skull, and then the soft tissue was covered and the epidermis was sutured, and confirmed by CT.
  • Rehabilitation observations were performed on the cranial dogs in one month, three months, and six months. No ectopic, no deformation, no rejection, six months of good recovery of the dog, no difference with normal dogs.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Transplantation (AREA)
  • Epidemiology (AREA)
  • Mechanical Engineering (AREA)
  • Dermatology (AREA)
  • Medicinal Chemistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Materials For Medical Uses (AREA)

Abstract

利用PEEK材料制成脑颅骨的工艺,它包括根据医院提供的患者的CT电子数据,选择相应的PEEK材料原片;在加热装置中对PEEK材料原片加热至PEEK材料的软化点260±10;将加热后的PEEK材料放入多点调控成型模内进行热压力加工,加工完成逐步冷确定型形成毛坯;对成品进行清洗、消毒和无菌包装等步骤:。本发明还公开了了制备PEEK材料脑颅骨的专用设备及PEEK材料在制备人工脑颅骨中的应用。本发明利用热成型和冷加工相结合的成型工艺,能最大程度地节省昂贵的PEEK材料,产品的定制加工的个性化生产能使人体骨骼与材料良好结合,材料本身具有良好的生物相容性与人体之间不会产生排异和其它的不良反应。

Description

利用 PEEK材料制成脑颅骨的工艺及专用设备及应用 技术领域
本发明涉及一种利用 PEEK材料制成脑颅骨的工艺, 本发明还涉及一种利用上述工 艺方法制成专用设备, 本发明还涉及这种 PEEK材料在人体中的应用。 背景技术
现有的人工颅骨的缺损大多由钛合金网板进行修复, 钛合金网板具有强度高, 无毒 性, 与人体具有良好的生物相容性的特点, 但由于钛合金网板是一种金属材料, 科学研 究发现钛合金网板位于人体内会发生电化学反应, 产生电化学腐蚀, 长期在人体内会使 人体钛合金网板周围的组织发黑, 甚至产生坏死现象, 同时由于电化学腐蚀的作用钛合 金网板的表面会产生凹凸不平的现象, 长期植入这对人体是极为不利的。
中国专利号为 200410012852.9,发明名称为复合材料人工颅骨的制备及其表面改性 方法,公开了一种人工颅骨复合材料,它釆用聚曱基丙烯酸曱酯,生物碳纤维或玻璃纤维,羟 基磷灰石微粉或 β-磷酸三钙微粉复合, 利用多层复合和热压技术制备人工颅骨。 但生物 碳纤维或玻璃纤维材料一直没有得到国家主管部门作为人体植入材料的认证。 因此这种 材料还处于研发阶段, 一直没有实施。
人们一直在寻找优秀的人体植入材料, 作为人工脑颅骨材料。
聚醚醚酮 (又称 PEEK )树脂是一种性能优异的特种工程塑料, 与其他特种工程塑 料相比具有诸多显著优势, 耐高温: PEEK及其化合物的玻璃转化温度为 143°C , 熔点为 343 °C , 独立检测结果表明, PEEK的热变形温度最高为 315 °C (填充玻璃纤维), 长期使 用温度为 260°C。 机械性能优异、 自润滑性好、 耐化学品腐蚀、 绝缘性能稳定、 阻燃、 耐剥离、 耐辐照、 对 X光有良好的通透性、 耐水解、 易加工等。
聚醚醚酮(PEEK )树脂的机械性能接近铝合金, 能够耐受除浓硫酸外的几乎所有溶 剂, 可在高剂量 γ射线辐照条件下很好的保持其特性, 在 180°C的高温条件下仍可保持优 良的理化和机械性能。除这些特性外聚醚醚酮(PEEK )树脂本身还具有的质量轻、无毒、 耐腐蚀等优点。
PEEK已经被我国及美国药监局认可作为人体植入材料(如用于推间植入材料等), 但 PEEK型材作为人体植入材料, 现有的加工方法是釆用机械冷加工, 这种加工方法 PEEK材料的损耗非常大, 一般材料的损耗达 70-90%, 甚至更多。 目前世界该材料只有 英国能够生产, PEEK植入材料的价格为 30万元 /千克。
因此研究 PEEK材料作为人工颅骨及研究 PEEK材料作为人工颅骨的加工方法已成 为了一项迫切而重要的工作。 发明内容
本发明的第一目的在于克服上述现有背景技术的不足之处, 而提供一种利用 PEEK 材料制成脑颅骨的工艺。 它釆用热加工和冷加工结合的成型方法, 可大量节省材料。
本发明的第二目的在于提供一种加工 PEEK材料脑颅骨的专用设备。
本发明的第三目的在于提供这种 PEEK材料的应用。
本发明的第一目的是通过如下措施来达到的: 利用 PEEK材料制成脑颅骨的工艺, 其特征在于它包括如下步骤:
( 1 )、 根据医院提供的患者的 CT电子数据, 选择相应的 PEEK材料原片;
( 2 )、 在加热装置中对 PEEK材料原片加热至 PEEK材料的软化点 260。±10。;
( 3 )、 将加热后的 PEEK材料放入多点调控成型模内进行热压力加工, 加工完成逐 步冷确定型形成毛坯;
( 4 )、 待毛坯固化后取出, 放置恒温箱内消除内应力和回弹;
( 5 )、 将毛坯放置加工设备上, 去除热加工产生的变性的表面结晶和杂质;
( 6 )、 根据患者的 CT电子数据, 机械加工至所需的形状和尺寸的成品;
( 7 )、 对成品进行清洗、 消毒和无菌包装。
在上述技术方案中, 所述的加热装置是根据患者的 CT电子数据对 PEEK材料原片 变形所需要的温度和变形力对材料的不同部位进行分区加热,变形大的部位加热温度高, 变形小的部位加热温度低。
在上述技术方案中,所述多点调控成型模加工毛坯是通过 PLC控制的下模上的针状 模块根据 CT电子数据进行空间调节、 定位, 同时对应调整上模上的针状模块, 将加热 好的 PEEK材料原片放置在下模上, 合模加工而成。
加工 PEEK材料脑颅骨的专用设备, 它包括多点调控成型模和加热装置, 其特征在 于所述的多点调控成型模它包括上模架, 上模, 定位装置, 下模, 下模架, 模具底座, 所述的上模固定在上模架上, 下模架位于模具底座上, 下模固定在下模架上, 定位装置 的下端固定在模具底座上, 上模架固定在定位装置, 所述的上模架的后端位于定位装置 上的滑动槽内, 所述的上模和下模均由多个针状模块组成, 第一 PLC编程控制器通过 位移传感器连接针状模块。
在上述技术方案中, 所述的定位装置与模具底座垂直。
在上述技术方案中, 所述下模架通过销钉固定在模具底座上。
在上述技术方案中, 所述的加热装置包括上盖板, 上加热器, 工件托架, 下加热器 和底座, 所述的工件托架位于上加热器和下加热器之间, 上加热器位于上盖板的中部位 置, 下加热器位于底座的中部位置; 上加热器和下加热器均由多个独立控制的小电阻丝 组成, 第二 PLC编程控制器通过温度传感器连接小电阻丝。
PEEK材料的应用, 其特征在于它用于在制备脑颅骨材料中的应用。 本发明具有如下优点: 利用热成型和冷加工相结合的成型工艺, 能最大程度地节省 昂贵的 PEEK材料, 故能使产品的成本得到控制, 使患者医疗费用得到大幅度的减少, 产品的定制加工的个性化生产能使人体骨骼与材料良好结合, 材料本身具有良好的生物 相容性与人体之间不会产生排异和其它的不良反应。 附图说明
图 1为本发明加工 PEEK材料脑颅骨的专用设备的结构示意图。
图 2为图 1中加装前端定位装置并撤除上模部分的结构俯视图。
图 3为 PEEK材料脑颅骨的成型的控制部分结构示意图。
图 4为 PEEK材料脑颅骨的加热时控制部分结构示意图。 具体实施方式
下面结合附图详细说明本发明的实施情况, 但它们并不构成对本发明的限定, 仅仅 举例而已。 同时通过说明本发明的优点将变得更加清楚和容易理解。
参阅附图可知: 本发明利用 PEEK材料制成脑颅骨的工艺, 其特征在于它包括如下 步骤:
( 1 )、 根据医院提供的患者的 CT电子数据, 选择相应的 PEEK材料原片;
( 2 ), 在加热装置中对 PEEK材料原片加热至 PEEK材料的软化点 260。±10。; ( 3 )、 将加热后的 PEEK材料放入多点调控成型模内进行热压力加工, 加工完成逐 步冷确定型形成毛坯;
( 4 )、 待毛坯固化后取出, 放置恒温箱内消除内应力和回弹;
( 5 )、 将毛坯放置加工设备上, 去除热加工产生的变性的表面结晶和杂质;
( 6 )、 根据患者的 CT电子数据, 机械加工至所需的形状和尺寸的成品;
( 7 )、 对成品进行清洗、 消毒和无菌包装。
所述的加热装置是根据患者的 CT电子数据对 PEEK材料原片变形所需要的温度和 变形力对材料的不同部位进行分区加热, 变形大的部位加热温度高, 变形小的部位加热 温度低(此部分由第二 PLC编程控制器与温度传感器及小电阻丝控制, 如图 4所示 )。
所述多点调控成型模加工毛坯是通过 PLC控制的下模上的针状模块根据 CT电子数 据进行空间调节、 定位, 同时对应调整上模上的针状模块, 将加热好的 PEEK材料原片 放置在下模上, 合模加工而成(如图 3所示 )。
加工 PEEK材料脑颅骨的专用设备, 它包括多点调控成型模和加热装置, 其特征在 于所述的多点调控成型模它包括上模架 11 , 上模 12, 定位装置 13 , 下模 14, 下模架 15 , 模具底座 16, 所述的上模 12固定在上模架 11上, 下模架 15位于模具底座 16上, 下模 14固定在下模架 15上, 定位装置 13的下端固定在模具底座 16上, 上模架 11固定在定 位装置 13上, 所述的上模架 11的后端位于定位装置 13上的滑动槽内, 所述的上模 12 和下模 14均由多个针状模块 18组成, 第一 PLC编程控制器 19通过位移传感器 20连 接针状模块(18 )。
所述的定位装置 13与模具底座 16垂直。 所述下模架 15通过销钉 17固定在模具底 座 16上。 所述的加热装置包括上盖板 21 , 上加热器 22, 工件托架 23 , 下加热器 24和 底座 25 , 所述的工件托架 23位于上加热器 22和下加热器 24之间, 上加热器 22位于上 盖板 21的中部位置, 下加热器 24位于底座 25的中部位置; 上加热器 22和下加热器 24 均由多个独立控制的小电阻丝 28组成, 第二 PLC编程控制器 26通过温度传感器 27连 接小电阻丝 28, 如图 1、 图 2、 图 3、 图 4所示。 实施例
选取样本狗 5支,要求体格健壮无颅骨损伤, 为成年狗,对不同狗的不同部位照 CT 图片, 并取得电子数据, 选择相应的 PEEK材料原片; 在加热装置中对 PEEK材料原片 加热至 PEEK材料的软化点 260。±10。;
将加热后的 PEEK材料放入多点调控成型模内进行热压力加工, 加工完成逐步冷确 定型形成毛坯;
待毛坯固化后取出, 放置恒温箱内消除内应力和回弹;
将毛坯放置加工设备上, 去除热加工产生的变性的表面结晶和杂质;
根据不同狗的不同部位的 CT电子数据, 机械加工至所需的形状和尺寸的成品; 对 成品进行清洗、 消毒和无菌包装。
加热装置是根据不同狗的 CT电子数据对 PEEK材料原片变形所需要的温度和变形 力对材料的不同部位进行分区加热, 变形大的部位加热温度高, 变形小的部位加热温度 低(此部分由第二 PLC编程控制器与温度传感器及小电阻丝控制, 如图 4所示 )。
多点调控成型模加工毛坯是通过 PLC控制的下模上的针状模块根据 CT电子数据进 行空间调节、 定位, 同时对应调整上模上的针状模块, 将加热好的 PEEK材料原片放置 在下模上, 合模加工而成(如图 3所示 )。
根据事先设定的部位对狗进行开颅手术, 取出部分颅骨, 然后将 PEEK材料脑颅骨 对狗进行修补, 再覆盖软组织并缝合表皮, 再通过 CT确认。 分一个月、 三个月、 六个 月分别对开颅的狗进行康复观察。 无异位, 无变形, 无排异反应, 六个月狗恢复状态良 好, 与正常狗无差异。

Claims

权利要求 书
1、 利用 PEEK材料制成脑颅骨的工艺, 其特征在于它包括如下步骤:
( 1 )、 根据医院提供的患者的 CT电子数据, 选相应的 PEEK材料原片;
( 2 )、 在加热装置中对 PEEK材料原片加热至 PEEK材料的软化点 260。土 10。; ( 3 )、 将加热后的 PEEK材料放入多点调控成型模内进行热压力加工, 加工完成逐 步冷确定型形成毛坯;
(4)、 待毛坯固化后取出, 放置恒温箱内消除内应力和回弹;
(5)、 将毛坯放置加工设备上, 去除热加工产生的变性的表面结晶和杂质;
(6)、 根据患者的 CT电子数据, 机械加工至所需的形状和尺寸的成品;
(7)、 对成品进行清洗、 消毒和无菌包装。
2、根据权利要求 1所述的利用 PEEK材料制成脑颅骨的工艺,其特征在于所述的加 热装置是根据患者的 CT电子数据对 PEEK材料原片变形所需要的温度和变形力对材料 的不同部位进行分区加热, 变形大的部位加热温度高, 变形小的部位加热温度低。
3、 根据权利要求 1所述的利用 PEEK材料制成脑颅骨的工艺,其特征在于所述多点 调控成型模加工毛坯是通过 PLC控制的下模上的针状模块根据 CT电子数据进行空间调 节、 定位, 同时对应调整上模上的针状模块, 将加热好的 PEEK材料原片放置在下模上, 合模加工而成。
4、 加工 PEEK材料脑颅骨的专用设备, 它包括多点调控成型模和加热装置,其特征 在于所述的多点调控成型模它包括上模架( 11 ),上模( 12 ),定位装置( 13 ), 下模( 14 ), 下模架(15), 模具底座(16), 所述的上模(12) 固定在上模架(11)上, 下模架(15) 位于模具底座(16)上, 下模(14) 固定在下模架(15)上, 定位装置 (13) 的下端固 定在模具底座( 16)上, 上模架( 11 ) 固定在定位装置 ( 13)上, 所述的上模架( 11 ) 的后端位于定位装置 (13)上的滑动槽内, 所述的上模 (12)和下模(14) 均由多个针 状模块( 18 )组成, 第一 PLC编程控制器 ( 19 )通过位移传感器( 20 )连接针状模块
5、根据权利要求 4所述的加工 PEEK材料脑颅骨的专用设备,其特征在于所述的定 位装置 ( 13 ) 与模具底座( 16 )垂直。
6、 根据权利要求 4所述的加工 PEEK材料脑颅骨的专用设备,其特征在于所述下模 架( 15 )通过销钉( Π ) 固定在模具底座( 16 )上。
7、 根据权利要求 4或 5或 6所述的加工 PEEK材料脑颅骨的专用设备,其特征在于 所述的加热装置包括上盖板(21 ), 上加热器(22), 工件托架(23), 下加热器(24)和 底座(25), 所述的工件托架(23)位于上加热器(22)和下加热器(24)之间, 上加热 器(22)位于上盖板(21 ) 的中部位置, 下加热器(24)位于底座(25) 的中部位置; 上加热器(22)和下加热器(24) 均由多个独立控制的小电阻丝 (28)组成, 第二 PLC 编程控制器(26)通过温度传感器(27)连接小电阻丝 (28)。
8、 PEEK材料的应用, 其特征在于它用于在制备脑颅骨材料中的应用。
PCT/CN2012/071370 2011-10-10 2012-02-20 利用peek材料制成脑颅骨的工艺及专用设备及应用 Ceased WO2013078790A1 (zh)

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