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UT Dallas Response Lab Projects Add New Dimension To Help 新冠肺炎 Fight
3D-Printing Initiative Creates Key Ventilator Valve; Gear, Swabs Also in Works

A team of UT Dallas researchers designed 和 3D-printed a positive end-expiratory pressure (PEEP) valve, which connects to the tubes that go from a ventilator to the patient. PEEP valves ensure that patients’ lungs do not collapse when exhaling into the ventilator.

University of Texas at Dallas researchers have designed and 3D-printed a critical ventilator part and are working to manufacture testing swabs and personal protective equipment (PPE) in a campus lab mobilized to address potential supply shortages due to the 新冠肺炎 p和emic.

正呼气末正压,或窥视,阀门与呼吸机使用,以确保患者的肺部保持一定的空气和呼气时不塌陷的一次性部件。需要对每个患者新的阀。在达拉斯德州球队正在寻求从美国紧急批准食品药品监督管理,因此可以将部分分发到需要的设备的医院。

The team began developing the PEEP valves in March to be proactive and address concerns about current 和 future shortages of ventilators during rapidly changing circumstances.

博士。本巴彻勒(中心)的达拉斯德州导演先进的聚合物研究实验室,培养出来的学生对如何制造和检查窥视阀门。学生 - 德州大学西南医学中心的医学专业的学生EV kakadiaris(左),达拉斯德州生物学高级夸阮(前)和机械工程大三danyal赛义德(回) - 用在他们的桌子钻机进行质量保证测试。

“We’re excited to be able to use 3D-printing technology to manufacture equipment that could save the lives of 新冠肺炎 patients 和 protect the health care workers caring for them,” said 博士。沃尔特VOIT bs'05,ms'06,副教授 材料科学与工程机械工业 在里面 Erik Jonsson School of Engineering 和 Computer Science。 VOIT,首席研究员谁运行 先进的聚合物研究实验室, is one of the faculty members leading the effort. He also is founder 和 CEO of 自适应3D技术,公司通过达拉斯德州推出 企业发展中心, which supplied the rubber used 在里面 inner component 和 the outer casing in some of the valves.

高校资源动员

The University mobilized the COVID-UT Dallas Response Lab (CURL) 在里面 utdesign 工作室,这通常使用的工程专业的学生在高级顶点项目的工作。时,在应对流感大流行,对必要人员在大学校园里限制只能访问和移动网校的工作室被关闭。在达拉斯德州的3D打印的团队在全国范围内经营的几所大学团体通过3D军团之一,专家组成的非正式的合作,以增加通风设备和防护设备的供应。

夸阮,谁在实验室自愿工作,装配的3D印刷膜片成3D印刷窥视阀壳体。 “在实验室里工作给我的目的和成就感知道,我参与到我们的打击covid-19无论多么小或大的可能是,”阮说。

“我们很感谢德州大学系统的授权我们打开时utdesign实验室covid-19大流行,所以我们可以迅速调集教师和学生的研究人员组成的团队难以置信使用他们来帮助填补严重短缺的专业知识救生设备在医院,”说 博士。斯蒂芬妮克亚当斯,院长的乔森学校和拉尔斯·马格努斯·埃里克森椅子。 “我很骄傲的谁自愿参与3D印刷的倡议学生。大专以上学历大约比在课堂上发生的事情,而这个项目体现了创造力和工程专业知识,我们的学生能够有助于解决现实世界的问题。”

Key participants in UT Dallas’ effort, in addition to Voit, include 博士。罗纳德smaldone在化学副教授 自然科学和数学学院博士。鲁红兵, Louis Beecherl Jr. Chair and professor of 机械工业, as well as other faculty 和 graduate students who volunteered to work on the project.

“我自愿,因为我看到了一个问题,我可以帮助解决”,佩德罗·罗恰,材料科学与工程研究助理和博士生谁从家里的3D设计帮助说。 “我认为,如果你有能力,你必须使用他们。这是我们作为UTD学生提供的解决方案,并帮助人们谁是战斗在第一线的责任。”

The project also included undergraduates such as biology senior Khoa Nguyen.

“我想做更多的不是医生和护士在一旁,因为他们在前线不知疲倦地工作欢呼,”阮说。 “在实验室里工作给我的目的和成就感知道,我参与到我们对covid-19战斗不管多么小或大的可能是。”

研究ers 3D-printed PEEP valves at the UT Dallas lab. The team is seeking approval from the U.S. Food 和 Drug Administration so it can distribute the parts to hospitals.

UT系统机构之间的合作

研究人员与德州大学西南医学中心的医生密切合作,以确定最迫切的需求。博士。鸿兆吉,德州大学西南耳鼻咽喉 - 头颈外科助理教授说,虽然医院有手,更在后的顺序窥视阀中,3D打印项目将有助于确保在需要的充足供应是可用的。

“In the end, it would be great if we never actually needed any of this,” Ji said. “If it turns out we do need them, it’ll be great to have some solutions.”

The CURL researchers also are working on several other projects, which they hope to provide 在里面 coming weeks:

  • Nasopharyngeal swabs, which are long thin nasal swabs that can be used to quickly and accurately test 和 diagnose patients.
  • A powered air purifying respirator, or PAPR, which is a type of PPE that consists of a hood with a filter to protect users.
  • A splitter device that can multiply the number of patients who can be connected to each ventilator, quadrupling the lifesaving equipment’s capacity.
  • Face shields that limit aerosolized particle mobility.
  • Other PPE, such as seals 和 gaskets, to place filter media into critical ventilation circuits in head gear.

“I’m proud of the students who volunteered to participate in the 3D-printing initiative. A college education is about more than what occurs 在里面 classroom和 this project demonstrates the creativity 和 engineering expertise that our students can contribute to solve real-world problems.”

博士。斯蒂芬妮克亚当斯, dean of the Erik Jonsson School of Engineering 和 Computer Science

别出心裁的工作

建模,设计,制造,测试和分发设备需要从达拉斯德州团队成员的专业知识,具有复杂的成像和打印设备一起。试错和严格的测试说明了工程和创新的过程是如何工作的。

After receiving an existing PEEP valve from Ji, UT Dallas researchers captured images of the device using a CT scan in Lu’s 先进材料力学实验室。研究人员在实验室专注于钝物撞击和疲劳载荷条件下了解聚合物及其复合材料的力学性能。该实验室的CT扫描可以穿透2英寸金属和其他材料,并生成设计和逆向工程的医疗组件所需高分辨率的3D图像。窥视阀由硬质塑料管内的薄橡胶组分。阀门打开和关闭来控制病人的气流。

From there, researchers converted images into computer-aided design files, which were used to print the parts on 3D printers. 博士。赫德, 机械工业 utdesign Capstone faculty director和 Bill Krenik PhD’93, chief technology officer of custom products at Texas Instruments Inc. who serves on the University’s 执行董事会, developed the testing rig for the valves. The first couple of attempts failed rigorous testing, but by improving the sealing capability, the researchers attained a successful design. Several private companies will manufacture large quantities of the valves.

博士。赫德, clinical associate professor of 机械工业 在里面 Erik Jonsson School of Engineering and Computer Science, st和s next to his PEEP valve testing rig.

“这是工程的意义所在,”棒wetterskog,为utdesign工作室谁领导的工作室改造成卷曲的乔森学校和主管企业关系的副院长说。 “首先要了解客户的需要,在这种情况下,我们当地的医院和患者的需求,然后反弹需要设计的所有技能和资源,试验,失败,重新设计,并在解决方案最终取得成功。我们的教师和学生都侧方工作德州大学西南医学博士,自适应3D技术,本土企业,现在公司在东部和西部海岸得到制造,测试这些设备和服务提供者的手中“。 

The team anticipates being able to manufacture hundreds of PEEP valves initially and tens of thous和s 在里面 coming months should they be needed.

The PEEP valve initiative received support from hospitals and corporate partners, including UT Southwestern, Parkland Health & Hospital System, Texas Instruments 和 Unique Software Development.

媒体联系方式: The Office of Media Relations, UT Dallas, (972) 883-2155, [电子邮件保护].