BIOIMPRESIÓN 3D

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Resultados 173 resultados LastUpdate Última actualización 23/04/2021 [00:03:00] pdf PDF xls XLS

Solicitudes publicadas en los últimos 30 días / Applications published in the last 30 days



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Verfahren zur Herstellung von Formteilen, insbesondere von Zahnersatz durch Hygroskopische, chemische, thermochemische und pyrolytisch zersetzbare Spritz- und/oder Kaltgussformen

NºPublicación: DE102020127477A1 22/04/2021

Solicitante:

WDT WOLZ DENTAL TECHNIK GMBH [DE]

Resumen de: DE102020127477A1

Die Erfindung betrifft ein Verfahren zur Herstellung von Formteilen aus bei über 200°C sinterfähigen Materialien, insbesondere von Zahnersatz oder Implantaten vorzugsweise im zahnmedizinischen Bereich durch eine thermochemisch, insbesondere pyrolytisch zersetzbare Spritz- und/oder Kaltgussform. Gemäß eines weiteren Aspektes betrifft die Erfindung die Herstellung einer solchen thermochemisch, insbesondere pyrolytisch zersetzbaren Spritz- und/oder Kaltgussform durch ein additives Materialaufbauverfahren, insbesondere 3D-Drucken. Die Erfindung umfasst im Weiteren die Herstellung und/oder Verwendung von metallischen und glaskeramischen bzw. hochleistungskeramischen Anmischmassen, sogenannten Schlickern, die zur Grünlingsherstellung, einschließlich dessen Sinterung, insbesondere im zahnmedizinischen Bereich geeignet sind und zur Befüllung, insbesondere bei Raumtemperatur, der thermochemisch, insbesondere pyrolytisch zersetzbaren Spritz- und/oder Kaltgussform verwendet werden können.

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ORTHODONTIC ARTICLES PREPARED USING A POLYCARBONATE DIOL, AND METHODS OF MAKING SAME

NºPublicación: EP3806774A1 21/04/2021

Solicitante:

3M INNOVATIVE PROPERTIES CO [US]

CN_112118802_A

Resumen de: WO2020005413A1

The present disclosure provides an orthodontic article including the reaction product of the photopolymerizable composition. The photopolymerizable composition includes i) a monofunctional (meth)acrylate monomer whose cured homopolymer has a glass transition temperature of 90 degrees Celsius or greater; ii) a photoinitiator; and iii) a polymerization reaction product of components. The components include 1) an isocyanate; 2) a (meth)acrylate mono-ol; 3) a polycarbonate diol; and 4) a catalyst. Further, the present disclosure provides a method of making an orthodontic article. The method includes obtaining a photopolymerizable composition and selectively curing the photopolymerizable composition to form an orthodontic article. Further, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an orthodontic article; and generating, with the manufacturing device by an additive manufacturing process, the orthodontic article based on the digital object. A system is also provided, including a display that displays a 3D model of an orthodontic article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an orthodontic article.

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METHOD OF PRODUCING A DENTAL IMPLANT USING A COMPOSITE NANOCOATING

NºPublicación: EP3808308A1 21/04/2021

Solicitante:

NARAYAMA LLC [RU]

Resumen de: EP3808308A1

This invention relates to the field of medical technology, and can be used in dentistry and traumatology, in particular when creating dental implants. Namely, the invention relates to the development and creation of a method for producing a dental implant characterized by high strength, as well as increased ability to activate the process of osteogenesis and osseointegration. The implant obtained by this method is characterized by high biocompatibility, bactericidal properties (reduces pronounced dystrophic and necrotic processes of living tissue), and an increased level of implant surface strength.

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3D PRINTED IMPLANT WITH INTERNAL CHANNELS

NºPublicación: EP3806776A1 21/04/2021

Solicitante:

BELLASENO GMBH [DE]

KR_20210020994_A

Resumen de: WO2019238716A1

An implant (52) for insertion into a patient is provided. The implant includes a three-dimensionally printed structure of layers. Each layer comprises an infill pattern of the three-dimensionally printed structure, the infill pattern of each layer comprising a set of infill lines. The implant includes a plurality of hollow channels (21). The layers are arranged on top of one another such that the plurality of hollow channels are formed within the implant, wherein the walls of each channel are formed by sections of the infill lines of a plurality of layers of the printed structure of layers. At least one hollow channel (21) extends between a first outer surface of the implant and a second outer surface of the implant. The at least one hollow channel is oriented in a direction which is tilted with respect to a reference axis (37) perpendicular to the first outer surface of the implant.

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A METHOD OF BUILDING UP A PHYSICAL OBJECT BY ADDITIVE MANUFACTURING

NºPublicación: EP3807078A1 21/04/2021

Solicitante:

3M INNOVATIVE PROPERTIES CO [US]

CN_112262037_A

Resumen de: WO2019239296A1

A method of building up a physical object by additive manufacturing which has the steps of building up the object and at least one support structure layer by layer along a build axis. The support structure supports the object relative to a build platform. During building up the object and the at least one support structure a connection is provided between the support structure and the object by a plurality of layers each of which being a common layer of the object and the support structure.

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CROSS-LINKABLE CELLULOSE AS 3D PRINTING MATERIAL

NºPublicación: EP3807461A1 21/04/2021

Solicitante:

STORA ENSO OYJ [FI]

WO_2019239301_PA

Resumen de: WO2019239301A1

A method for 3D printing is provided, using crosslinkable microfibrillated cellulose (MFC). The 3D printed structure is treated to provide crosslinking of the MFC.

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一种基于3D打印牙科模型快拆式数字化咬合架

NºPublicación: CN212996819U 20/04/2021

Solicitante:

骆处默

Resumen de: CN212996819U

一种基于3D打印牙科模型快拆式数字化咬合架,包括上咬合部以及下咬合部,上咬合部以及下咬合部的一端通过销栓铰接,所述上咬合部的自由端以及下咬合部的自由端分别设有上下对应的卡合装置,所述卡合装置包括安装块,所述安装块的外侧设置有模型固定空间,所述模型固定空间一侧设有模型限位机构。与现有技术相比,本实用新型通过在上咬合部与下咬合部自由端设置可拆卸的卡合装置,可有效解决经过多次安装与拆卸后模型固定位置偏移导致数字化模型咬颌关系不准确的问题,并且不需要其他工具,实现快速安装与拆卸数字化模型,同时由于拆装方便,不需要每个模型配备一个咬合架,仅需要每一个工人配备一个即可,大幅度的降低了生产成本且提高了效率。

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一种多级可拆分棒材及其制造方法

NºPublicación: CN112674857A 20/04/2021

Solicitante:

杭州电子科技大学

Resumen de: CN112674857A

本发明公开了一种多级可拆分棒材及其制造方法。所述棒材由2个或者2个以上的独立单元组合而成,每个单元截面均匀,相互之间通过螺纹活动连接;所述的单元采用可降解的生物活性材料制成;所述的单元由头部,中部和尾部三个部分组成,头部为实心结构,头部的上端为外螺纹结构,用来跟其它单元的尾部连接,中部为多孔结构,孔隙率在10‑60%,孔径在50‑600微米,孔道结构可以是正方形,长方形,平行四边形等,尾部为实心结构,尾部的下端为内螺纹结构,用来跟其它单元的头部连接。本发明可以根据需要组装具有不同功能,不同降解速度,不同力学性能等的单元于一身,使其满足不同的应用环境要求。

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一种用于骨修复的个性化镁合金支架的制备方法及其产品

NºPublicación: CN112675362A 20/04/2021

Solicitante:

上海纳米技术及应用国家工程研究中心有限公司

Resumen de: CN112675362A

本发明涉及一种用于骨修复的个性化镁合金支架的制备方法及其产品,通过个性化3D打印技术制备的载药丝素蛋白涂层改性的镁合金支架及其制备方法。通过3D打印技术制备镁合金支架,可调控镁合金网的厚度和孔径,满足临床个性化需求;以负载促血管化生物活性因子的丝素蛋白涂层作为生物活性涂层对可降解镁合金进行表面改性,通过聚合物涂层的阻隔作用,降低镁合金与降解介质的接触,从而改善材料的耐腐蚀性;同时促进增骨区内部血管化,为新骨生长提供营养物质,同时提高降解产物氢气的运输和排放。本发明提出一种新的用于骨修复的个性化镁合金支架的制备方法,为临床个性化治疗大面积骨缺损提供了新的思路,具有广阔的临床应用前景。

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METHOD FOR PRODUCING THREE-DIMENSIONAL HYDROGEL STRUCTURES AND DEVICE FOR THE LAYERWISE BUILDING-UP OF SUCH HYDROGEL STRUCTURES

NºPublicación: CN112689558A 20/04/2021

Solicitante:

弗劳恩霍夫应用研究促进协会

WO_2020052981_A1

Resumen de: EP3623136A1

The invention relates to a method for producing three-dimensional, preferably porous, hydrogel structures (1) by means of layer build-up technique, wherein the method comprises the following steps. Providing (S1) of a liquid hydrogel solution, preferably a liquid alginate solution, and a, preferably transportable, sample carrier. Layerwise applying (S2) the liquid hydrogel solution onto the sample carrier (4) in a temperature environment, the temperature of which is below the freezing point of the hydrogel solution, to produce a frozen 3D layered hydrogel structure (1a). In order to increase advantageously the porosity of the 3D layered hydrogel structure (1a), i.e. the proportion of small voids, cavities and/or depressions in the 3D layered hydrogel structure, the method according to the invention further comprises the step of drying (S3) of the frozen 3D layered hydrogel structure (1a),e.g.by means of freeze-drying, to produce a porous 3D hydrogel structure (1). The invention relates further also to a device (10) for the layerwise building-up of three-dimensional hydrogel structures.

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一种原位3D打印软骨修复装置及方法

NºPublicación: CN112677475A 20/04/2021

Solicitante:

华南理工大学北京大学第三医院(北京大学第三临床医学院)

Resumen de: CN112677475A

本发明公开了一种原位3D打印软骨修复装置及方法,装置包括透镜、原材料容器、固化光源、转接架、光纤、三通头、推动板、模组、注射针、压板以及机械臂;所述透镜通过U形卡槽固设在三通头内部,三通头与光纤通过螺纹连接,光纤与固化光源通过螺纹连接,固化光源与转接架通过螺栓连接,模组与转接架通过螺栓螺母连接,推动板与模组通过螺栓螺母连接,转接架与机械臂通过螺栓连接,原材料容器与模组通过压板连接,注射针与原材料容器通过螺纹连接。本发明通过数字化手段控制6轴机械臂带动打印喷头直接在软骨缺陷处直接原位打印修复,过程简单,人工介入时间短,可实现多种生物材料、多种结构的高精度原位3D打印精准修复。

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RADIATION-CURABLE COMPOSITION FOR USE IN RAPID-PROTOTYPING OR RAPID-MANUFACTURING METHODS

NºPublicación: CN112689646A 20/04/2021

Solicitante:

古莎有限公司

Resumen de: WO2020058464A1

The invention relates to a polymerisable, radiation-curable, in particular UV/Vis-, UV-, or Vis-curable composition, comprising (i) monomers and (ii) at least one further component, wherein the (i) monomers comprise (a) at least one acrylate with an additional carboxy group, acrylate with at least one additional anhydride group of carboxy groups and/or derivative of the aforementioned acrylates, (b) at least one difunctional acrylate with bivalent alicyclic group and/or at least one difunctional methacrylate with bivalent alicyclic group, (c) optionally at least one disubstituted 4,4'-di(oxabenzene)dialkylmethane of formula I, and wherein (ii) the at least one further component comprises (d) at least one photoinitiator for the UV and/or Vis range or a photoinitiator system. The composition according to the invention is suitable for producing dental prosthetic parts, orthopaedic appliances or dental pre-forms, which are characterised by a) a bending strength of greater than or equal to 50 MPa and/or b) a modulus of elasticity of greater than or equal to 1500 MPa, and/or c) a bending fracture of greater than or equal to 1.1 MPa m1/2 and/or d) a fracture work of greater than 250 J/m2 DIN EN ISO 20795-2, wherein these can be produced in a rapid-prototyping or in a rapid-manufacturing or rapid-tooling method.

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利用3D打印技术制作梨状肌药物注射的穿刺导板的设计方法

NºPublicación: CN112675387A 20/04/2021

Solicitante:

怀化市第一人民医院

Resumen de: CN112675387A

本设计方法旨在设计一种穿刺导板,安全有效的进行药物注射,该导板模型由软件制作,经3D打印机打印完成,根据体表标志固定导板,按设定穿刺轨道及深度进行药物注射。该导板模型建立快捷,3D打印模型精准,导板使用操作便捷,可用于临床工作。

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表面具有微纳米结构的生物陶瓷支架及其制备方法和应用

NºPublicación: CN112661500A 16/04/2021

Solicitante:

中国科学院上海硅酸盐研究所

Resumen de: CN112661500A

一种表面具有微纳米结构的生物陶瓷支架及其制备方法和应用,具体是一种四硫化三铁微米花修饰的生物陶瓷支架,其特征在于,包括镁黄长石支架和生长在镁黄长石支架表面的四硫化三铁层微米花颗粒,所述镁黄长石支架孔道直径在100~400μm;所述四硫化三铁微米花颗粒是微纳米结构,由直径为0.5~3μm的片状颗粒组装成,其直径在5~50μm。制备得到的四硫化三铁微米花修饰的生物陶瓷支架可以用于骨肿瘤术后的治疗与修复。

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一种用于3D打印的水凝胶材料及制备方法和应用、外界刺激双响应海藻酸钠的制备方法

NºPublicación: CN112661983A 16/04/2021

Solicitante:

中国科学院兰州化学物理研究所

Resumen de: CN112661983A

本发明涉及水凝胶技术领域,尤其涉及一种用于3D打印的水凝胶材料及其制备方法和应用、外界刺激双响应海藻酸钠的制备方法。本发明提供的制备方法,包括以下步骤:将海藻酸钠溶液和甲基丙烯酸酐混合,发生酰化反应,得到甲基丙烯酸酐化海藻酸钠单体;在搅拌的条件下,将所述甲基丙烯酸酐化海藻酸钠单体、水、光交联剂和光引发剂混合,得到所述用于3D打印的水凝胶材料;所述海藻酸钠溶液中的海藻酸钠与甲基丙烯酸酐的质量比为1:(1~20)。利用所述制备方法制备得到的水凝胶材料进行3D打印可以制备得到结构精细的网格结构,且制备得到的水凝胶管状结构较为均匀。

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一种严重颌面骨折外固定头盔的制作方法

NºPublicación: CN112656567A 16/04/2021

Solicitante:

上海交通大学医学院附属第九人民医院

Resumen de: CN112656567A

本发明公开了一种严重颌面骨折外固定头盔的制作方法,包括基座制作:以患者两耳连线冠状面后半部的枕部皮肤数据为基础,进行适当放大尺寸后建模,并3D打印而成;盖板制作:以两耳连线冠状面前半部骨折虚拟复位后的颌面皮肤为基础,适当放大尺寸后3D打印而成;将盖板和基座之间通过牵引带连接,牵引带的收紧度是可以调节的,为了盖板和基座之间可以固定牢固,可以增加其他的固定件进行加固。本发明有效利用3D打印和虚拟复位的原理来快速准确地制作颌面骨折固定头盔,解决颌面开放性骨折一期功能复位问题。

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一种咽鼓管功能障碍药物栓子及制备方法

NºPublicación: CN112656949A 16/04/2021

Solicitante:

深圳大学深圳大学总医院

Resumen de: CN112656949A

本发明公开了一种咽鼓管功能障碍药物栓子及制备方法。本发明所述咽鼓管功能障碍药物栓子,包括:可降解支架,所述可降解支架内形成有药物腔室;药物,所述药物负载在所述药物腔室内;其中,所述药物为咽鼓管炎症药物。本发明中所述可降解支架兼具载药和支撑的作用;所述药物腔室用于容纳咽鼓管炎症药物。所述咽鼓管功能障碍药物栓子能够在治疗过程中降解,并同时释放药物腔室内的咽鼓管炎症药物。

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一种一站式壳状牙科器械生产设备

NºPublicación: CN212979253U 16/04/2021

Solicitante:

浙江隐齿丽医学技术有限公司

Resumen de: CN212979253U

本实用新型提供一种一站式壳状牙科器械生产设备,包括:箱体、及设置在箱体内的多个用于打印牙颌模型的3D打印机构,驱动3D打印机构运动的驱动装置,及用于转运牙颌模型的转运装置;3D打印机构设置有至少一个打印部,驱动装置驱动所述3D打印机构运动使3D打印机构在第一工位及第二工位之间往复运动,转运装置在所述第二工位处拾取牙颌模型;箱体包括第一工作空间和第二工作空间,第一工位设置于第一工作空间内,第二工位设置于第二工作空间内。本实用新型提供的一站式壳状牙科器械生产设备不仅提供了转运装置的利用率,同时还节省了空间,提高空间的利用率。

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Resin composition suitable for printing and printing methods

NºPublicación: CN112672873A 16/04/2021

Solicitante:

莱奥本矿业大学

Resumen de: GB2575793A

A resin composition comprising [a] at least one compound C1 having at least one terminal alkyne functional group (such as propargyl, butynyl or pentynyl), e.g. propargyl carbonate, carbamate, ether, ester, butynyl carbonate, carbamate, ether, ester or pentynyl carbonate, carbamate, ether, ester; [b] at least one compound C2 having at least two thiol functional groups; [c] at least one compound C3 having at least one carbon-carbon double bond, and has at least a functional group such as a vinyl functional group, an allyl functional group, an (meth) acrylate group; [d] at least one photoinitiator; and [d] optionally at least one stabiliser. Also disclosed is use of the resin composition in an ink; a kit comprising the resin composition; a printing method comprising the resin composition; a polymer, an article, such as a medical device or a biomedical device such as an implant, a bone substitute, a tissue substitute or a dental product, comprising the resin composition. Further disclosed is a composition comprising at least one compound C1 having at least one terminal alkyne functional group (such as propargyl, butynyl or pentynyl), e.g. propargyl carbonate, carbamate, ether, ester, butynyl carbonate, carbamate, ether, ester or pentynyl carbonate, carbamate, ether, ester and/or at least one compound C3 having at least one carbon-carbon double bond, and has at least a functional group such as a vinyl functional group, an allyl functional group, an (meth) acrylate group; at least

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MESOPOROUS ELASTOMER

NºPublicación: CN112673057A 16/04/2021

Solicitante:

艾姆菲里亚股份公司

AU_2019275192_A1

Resumen de: WO2019226086A1

The present disclosure relates to elastomeric lyotropic liquid crystal (E-LLC) and mesoporous elastomers, wherein the mesoporous elastomer possesses a combination of covalent chemical crosslinks and physical chain entanglement crosslinks. The production and use of such mesoporous elastomers is also provided.

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一种新型超弹性骨材料3D打印设备

NºPublicación: CN212979249U 16/04/2021

Solicitante:

成都大学附属医院

Resumen de: CN212979249U

一种新型超弹性骨材料3D打印设备,包括底架(1)及其顶面焊接的门框式支架(10),所述支架(10)的前侧安装有导杆系统架(11),所述支架(10)的顶端安装有控制器(2),其特征在于:所述支架(10)的顶端设置有材料盘(3),所述材料盘(3)的中间凹面上缠绕有呈丝状的超弹性骨骼材料(30),所述材料盘(3)的下方设置有清理座板(4)。本实用新型的新型超弹性骨材料3D打印设备制作的产品具有良好的生物相容性:人工骨的材料无毒、不致畸,利于种子细胞黏附、增殖,降解产物无毒害作用,不引起炎症反应等。

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一种可3D打印的壳聚糖/锂皂石复合水凝胶及其制备方法与应用

NºPublicación: CN112661980A 16/04/2021

Solicitante:

华南理工大学

Resumen de: CN112661980A

本发明公开了一种可3D打印的壳聚糖/锂皂石复合水凝胶及其制备方法与应用。所述方法包括:在加热条件下,将甲基丙烯酸酐加入壳聚糖(或其衍生物)溶液中反应,透析并冻干,获得甲基丙烯酸化改性的壳聚糖或其衍生物;将光引发剂、锂皂石粉末和甲基丙烯酸化改性的壳聚糖(或其衍生物)先后溶解在水中,搅拌均匀、水浴加热后得到可打印水凝胶油墨;将上述水凝胶按照设定的形状3D打印得到三维支架,并将打印后支架通过紫外光固化一定时间。该水凝胶支架的形状可设计,具有良好的机械性能和生物学性能,无细胞毒性且可以促进细胞生长。与现有技术相比,本发明使用低含量锂皂石制备可3D打印的壳聚糖复合水凝胶,制备方法简单易行,可推广应用。

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PREPARATION AND APPLICATIONS OF BIOCOMPATIBLE CONDUCTIVE INKS BASED ON CELLULOSE NANOFIBRILS FOR 3D PRINTING OF CONDUCTIVE BIOMEDICAL DEVICES AND FOR USE AS MODELS FOR STUDY OF NEURODEGENERATIVE DISORDERS AND CONNECTION BETWEEN BRAIN/NEURONS AND COMMUNICATION OR OTHER ELECTRONIC DEVICES

NºPublicación: US2021108098A1 15/04/2021

Solicitante:

GATENHOLM PAUL [US]
KARABULUT ERDEM [NO]

US_2020407577_A1

Resumen de: US2021108098A1

The present invention relates to preparation and use of nanocellulose fibrils or crystals such as disintegrated bacterial nanocellulose, tunicate-derived nanocellulose, or plant-derived nanocellulose, together with carbon nanotubes, as a biocompatible and conductive ink for 3D printing of electrically conductive patterns. Biocompatible conductive bioinks described in this invention were printed in the form of connected lines onto wet or dried nanocellulose films, bacterial cellulose membrane, or tunicate decellularized tissue. The devices were biocompatible and showed excellent mechanical properties and good electrical conductivity through printed lines (3.8·10−1 S cm−1). Such scaffolds were used to culture neural cells. Neural cells attached selectively on the printed pattern and formed connective networks. The devices prepared by this invention are suited as bioassays to screen drugs against neurodegenerative diseases such as Alzheimer's and Parkinson's, study brain function, and/or be used to link the human brain with electronic and/or communication devices. They can also be implanted to replace neural tissue or stimulate guiding of neural cells. They can also be used to stimulate the heart by using electrical signaling or to repair myocardial infarction and/or damage related thereto.

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METHOD FOR MANUFACTURING SKIN REGENERATION SHEET CUSTOMIZED FOR PATIENT WITH DIABETIC FOOT DISEASE, AND SKIN REGENERATION SHEET CUSTOMIZED FOR PATIENT WITH DIABETIC FOOT DISEASE, MANUFACTURED THEREBY

NºPublicación: WO2021071001A1 15/04/2021

Solicitante:

ROKIT HEALTHCARE INC [KR]

KR_102091151_B1

Resumen de: WO2021071001A1

The present specification relates to a method for manufacturing a skin regeneration sheet customized for a patient with a diabetic foot disease, and a skin regeneration sheet customized for a patient with a diabetic foot disease, manufactured thereby, the method comprising the steps of: A) extracting autologous fat tissue; B) removing fiber in the autologous fat tissue by using a first filter having a pore diameter of 2 to 3 mm; C) pulverizing the autologous fat tissue by allowing the autologous fat tissue, from which fiber is removed, to sequentially pass through a second filter having a pore diameter of 450 to 550 ㎛ and a third filter having a pore diameter of 150 to 250 ㎛; D) obtaining a fat tissue extract by extracting the pulverized autologous fat tissue collected in a fourth filter having a pore diameter of 25 to 75 ㎛; E) obtaining three-dimensional data about areas of skin defects of a patient by using a 3D scanner, and then manufacturing a 3D mold corresponding to the skin defect areas by using a 3D printer on the basis of the data; F) forming a proto-layer by applying, to the inside of the 3D mold, a first liquid comprising the fat tissue extract and fibrinogen; G) applying, onto the proto-layer, a second liquid comprising thrombin, so as to cure same as a skin regeneration layer; and H) removing the 3D mold.

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METHOD OF MODIFYING THE GINGIVAL PART OF A VIRTUAL MODEL OF A SET OF TEETH

Nº publicación: US2021107272A1 15/04/2021

Solicitante:

3SHAPE AS [DK]

EP_3679888_A1

Resumen de: US2021107272A1

Disclosed is a method of generating and modifying a virtual model of a set of teeth, where the method provides that a restoration can be inserted into a physical model of the set of teeth manufactured from the virtual model of the set of teeth. A method of and a system for generating a virtual model of a set of teeth for manufacturing a physical model of the set of teeth, and to a physical model of a set of teeth.

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