P. Farjam, Tim Roubos, E. Hekman, G. J. Verkerke, J. Rouwkema
There is no specific distraction device available for the metacarpophalangeal joint (MCPJ) of the thumb. Joint distraction is required to facilitate the implantation of MCPJ spacers. In addition, expanding the joint space is essential for MCPJ arthroscopy. For these reasons, a novel device has been designed to create some space in the MCPJ. This articulating joint distractor uses a finger trap to apply the distraction force to the thumb and a strap to fixate the hand. There is the possibility to flex the thumb while maintaining the distraction force. In a first cadaveric experiment, we have determined that the force required to create 2 mm of distraction is approximately 30N. A prototype of the articulating joint distractor has been built and was tested during a second cadaveric study. As a result of the second cadaveric experiment, the desired functions of the prototype have been validated. By adjusting and optimizing the design to minimize the risks found partly during the experiment, the final design of the non-invasive MCPJ distractor has been realized.
{"title":"DESIGN OF AN ARTICULATING NON-INVASIVE JOINT DISTRACTOR FOR METACARPOPHALANGEAL JOINT OF THE THUMB","authors":"P. Farjam, Tim Roubos, E. Hekman, G. J. Verkerke, J. Rouwkema","doi":"10.1115/dmd2023-4967","DOIUrl":"https://doi.org/10.1115/dmd2023-4967","url":null,"abstract":"\u0000 There is no specific distraction device available for the metacarpophalangeal joint (MCPJ) of the thumb. Joint distraction is required to facilitate the implantation of MCPJ spacers. In addition, expanding the joint space is essential for MCPJ arthroscopy. For these reasons, a novel device has been designed to create some space in the MCPJ. This articulating joint distractor uses a finger trap to apply the distraction force to the thumb and a strap to fixate the hand. There is the possibility to flex the thumb while maintaining the distraction force. In a first cadaveric experiment, we have determined that the force required to create 2 mm of distraction is approximately 30N. A prototype of the articulating joint distractor has been built and was tested during a second cadaveric study. As a result of the second cadaveric experiment, the desired functions of the prototype have been validated. By adjusting and optimizing the design to minimize the risks found partly during the experiment, the final design of the non-invasive MCPJ distractor has been realized.","PeriodicalId":325836,"journal":{"name":"2023 Design of Medical Devices Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132459526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The front matter for this proceedings is available by clicking on the PDF icon.
通过点击PDF图标可获得本次会议的主题。
{"title":"DMD2023 Front Matter","authors":"","doi":"10.1115/dmd2023-fm1","DOIUrl":"https://doi.org/10.1115/dmd2023-fm1","url":null,"abstract":"\u0000 The front matter for this proceedings is available by clicking on the PDF icon.","PeriodicalId":325836,"journal":{"name":"2023 Design of Medical Devices Conference","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132294340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Youness Arjoune, Tyler Salvador, Trong-Nghia Nguyen, A. Telluri, Titus John, Jonathan C. Schroder, Dinesh K. Pillai, S. Teach, S. J. Patel, R. Doroshow, R. Shekhar
Auscultation is a critical component of a cardiopulmonary examination; however, several studies have shown that many physicians lack proficiency in it. With the development of artificial intelligence (AI)-augmented auscultation tools, physicians could improve their auscultation skills and provide accurate diagnoses, even approaching the expertise of seasoned clinicians. Although a few AI auscultation platforms have been created, none have been adopted widely in clinical settings. Our goal is to develop a comprehensive digital auscultation platform, termed StethAid, to supplement the value of auscultation. StethAid is a comprehensive auscultation platform that comprises of an electronic stethoscope, mobile applications, and website portals. The StethAid stethoscope enables streaming and recording of heart and lungs sounds. It features 100 levels of sound amplification, digital filtering, active noise cancellation, and wireless connectivity. The StethAid stethoscope is similar to FDA-approved stethoscopes in its frequency response. Our mobile apps deliver various auscultation tools, as well as an AI suite and remote auscultation capabilities. The AI suite includes deep learning-based automated wheeze detection from auscultated lungs sounds. StethAid has been rigorously validated technically and clinically. StethAid could assist physicians in making more informed decisions, potentially leading to improved patient outcomes.
{"title":"STETHAID: AN ELECTRONIC STETHOSCOPE CONNECTED TO IOS MOBILE APPS FOR AI-ASSISTED AUSCULTATION","authors":"Youness Arjoune, Tyler Salvador, Trong-Nghia Nguyen, A. Telluri, Titus John, Jonathan C. Schroder, Dinesh K. Pillai, S. Teach, S. J. Patel, R. Doroshow, R. Shekhar","doi":"10.1115/dmd2023-8881","DOIUrl":"https://doi.org/10.1115/dmd2023-8881","url":null,"abstract":"\u0000 Auscultation is a critical component of a cardiopulmonary examination; however, several studies have shown that many physicians lack proficiency in it. With the development of artificial intelligence (AI)-augmented auscultation tools, physicians could improve their auscultation skills and provide accurate diagnoses, even approaching the expertise of seasoned clinicians. Although a few AI auscultation platforms have been created, none have been adopted widely in clinical settings. Our goal is to develop a comprehensive digital auscultation platform, termed StethAid, to supplement the value of auscultation.\u0000 StethAid is a comprehensive auscultation platform that comprises of an electronic stethoscope, mobile applications, and website portals. The StethAid stethoscope enables streaming and recording of heart and lungs sounds. It features 100 levels of sound amplification, digital filtering, active noise cancellation, and wireless connectivity. The StethAid stethoscope is similar to FDA-approved stethoscopes in its frequency response. Our mobile apps deliver various auscultation tools, as well as an AI suite and remote auscultation capabilities. The AI suite includes deep learning-based automated wheeze detection from auscultated lungs sounds. StethAid has been rigorously validated technically and clinically. StethAid could assist physicians in making more informed decisions, potentially leading to improved patient outcomes.","PeriodicalId":325836,"journal":{"name":"2023 Design of Medical Devices Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124804369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cerebral palsy is the most common childhood motor disability that effects 0.3% of children in the US and two-thirds of them have gait impairment. An ankle-foot orthosis (AFO) is commonly prescribed as a gait assistance. The function of an AFO is maximized when its stiffness and neutral angle are optimally prescribed to address each user’s issue. However, the prescription process is not standardized and is subjective to the prescribing clinician. Only one-third of AFOs improved the user’s gait while another one-third negatively affected the gait. A tunable AFO is developed to allow clinicians to test a range of stiffness and neutral angle of a passive AFO, making the prescription more likely to have a positive effect. The design of tunable AFO has a weight of about a typical plastic AFO and a dimension designed for children. It covers 90% range of stiffness and neutral angle of prescribed AFOs. It can withstand the torque applied during walking. Mechanisms of adjusting both parameters operate fast and are controlled by a microprocessor. A benchtop prototype was built to test the adjustment mechanisms. Both mechanisms were validated.
{"title":"BENCH TESTING OF A TUNABLE ANKLE-FOOT ORTHOSIS WITH ADJUSTABLE STIFFNESS AND NEUTRAL ANGLE","authors":"Tianshu Jiang, W. Durfee","doi":"10.1115/dmd2023-4672","DOIUrl":"https://doi.org/10.1115/dmd2023-4672","url":null,"abstract":"\u0000 Cerebral palsy is the most common childhood motor disability that effects 0.3% of children in the US and two-thirds of them have gait impairment. An ankle-foot orthosis (AFO) is commonly prescribed as a gait assistance. The function of an AFO is maximized when its stiffness and neutral angle are optimally prescribed to address each user’s issue. However, the prescription process is not standardized and is subjective to the prescribing clinician. Only one-third of AFOs improved the user’s gait while another one-third negatively affected the gait. A tunable AFO is developed to allow clinicians to test a range of stiffness and neutral angle of a passive AFO, making the prescription more likely to have a positive effect. The design of tunable AFO has a weight of about a typical plastic AFO and a dimension designed for children. It covers 90% range of stiffness and neutral angle of prescribed AFOs. It can withstand the torque applied during walking. Mechanisms of adjusting both parameters operate fast and are controlled by a microprocessor. A benchtop prototype was built to test the adjustment mechanisms. Both mechanisms were validated.","PeriodicalId":325836,"journal":{"name":"2023 Design of Medical Devices Conference","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127011465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Elizabeth Beam, Evan Marsh, Noah Wester, B. Lowndes
An interprofessional team embarked on the design and prototyping of an improved powered air-purifying respirator for healthcare. They used 3D modeling to move their ideas from a list of key expectations to a virtual prototype. The design thinking concept of rapid prototyping and empathy interviewing ensured this design met the needs of the stakeholders who would use the product. Several significant changes in the design resulted from the rapid prototyping interviews. This process was enhanced by using a virtual reality software to allow the team to “see” the product and comment on the design integrating both VR headsets and videoconferencing for feedback and collaboration. The design project is now ready for physical prototyping and further human factors analysis.
{"title":"DESIGN THINKING TO PROTOTYPE DEVELOPMENT: CREATING AN IMPROVED HEALTHCARE POWERED AIR-PURIFYING RESPIRATOR","authors":"Elizabeth Beam, Evan Marsh, Noah Wester, B. Lowndes","doi":"10.1115/dmd2023-5946","DOIUrl":"https://doi.org/10.1115/dmd2023-5946","url":null,"abstract":"\u0000 An interprofessional team embarked on the design and prototyping of an improved powered air-purifying respirator for healthcare. They used 3D modeling to move their ideas from a list of key expectations to a virtual prototype. The design thinking concept of rapid prototyping and empathy interviewing ensured this design met the needs of the stakeholders who would use the product. Several significant changes in the design resulted from the rapid prototyping interviews. This process was enhanced by using a virtual reality software to allow the team to “see” the product and comment on the design integrating both VR headsets and videoconferencing for feedback and collaboration. The design project is now ready for physical prototyping and further human factors analysis.","PeriodicalId":325836,"journal":{"name":"2023 Design of Medical Devices Conference","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130172998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ethan J. Krings, Sequoia L. Truong, Kiersten A. Reeser, Benjamin D. Hage, G. Bashford, Eric J. Markvicka
Ultrasound is a safe, noninvasive diagnostic technique used to measure internal structures such as blood vessels and the velocity of blood flow in the human body. The ability to continuously measure blood flow in major cerebral arteries would enable the early detection of medical problems such as stroke. However, current ultrasound technology consists of rigid, hand-held probes that are arduous to use, sensitive to movement, and are primarily designed for intermittent, instead of continuous use. Here, we describe the design of a wearable ultrasound patch for continuously measuring blood flow velocity through the middle cerebral artery (MCA) that can be assessed from the temple region of the head. The wearable ultrasound patch is composed of an array of piezoelectric elements that are wired together using flexible electrical conductors and encapsulated in an elastic substrate. To improve ultrasound energy transfer, a soft and conformal composite matching layer is introduced. The matching layer consists of gallium-based liquid metal (LM) microdroplets dispersed in a silicone elastomer. The acoustic impedance of the matching layer can be tuned by varying the volume loading of LM. The wearable ultrasound patch will provide new opportunities to continuously measure blood flow velocity and ultimately enable early detection of medical problems such as stroke.
{"title":"DESIGN OF A WEARABLE ULTRASOUND PATCH WITH SOFT AND CONFORMAL MATCHING LAYER","authors":"Ethan J. Krings, Sequoia L. Truong, Kiersten A. Reeser, Benjamin D. Hage, G. Bashford, Eric J. Markvicka","doi":"10.1115/dmd2023-8253","DOIUrl":"https://doi.org/10.1115/dmd2023-8253","url":null,"abstract":"\u0000 Ultrasound is a safe, noninvasive diagnostic technique used to measure internal structures such as blood vessels and the velocity of blood flow in the human body. The ability to continuously measure blood flow in major cerebral arteries would enable the early detection of medical problems such as stroke. However, current ultrasound technology consists of rigid, hand-held probes that are arduous to use, sensitive to movement, and are primarily designed for intermittent, instead of continuous use. Here, we describe the design of a wearable ultrasound patch for continuously measuring blood flow velocity through the middle cerebral artery (MCA) that can be assessed from the temple region of the head. The wearable ultrasound patch is composed of an array of piezoelectric elements that are wired together using flexible electrical conductors and encapsulated in an elastic substrate. To improve ultrasound energy transfer, a soft and conformal composite matching layer is introduced. The matching layer consists of gallium-based liquid metal (LM) microdroplets dispersed in a silicone elastomer. The acoustic impedance of the matching layer can be tuned by varying the volume loading of LM. The wearable ultrasound patch will provide new opportunities to continuously measure blood flow velocity and ultimately enable early detection of medical problems such as stroke.","PeriodicalId":325836,"journal":{"name":"2023 Design of Medical Devices Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133029891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Adams, Phillip Demarest, Kara A Donovan, Dr. Peter Brunner, Dr. Harold Burton, Dr. Simon Haroutounian, Dr. Eric Leuthardt, Dr. Jenna Gorlewicz
This paper presents an experimental chronic pain rehabilitation therapy utilizing vibration-based stimulation of the hand, wrist and lower arm, which has shown promise in reducing pain ratings in chronic pain patients (n=5) over a six-week treatment period. Based on the clinical need and practical use discoveries of that first trial, this paper outlines the development of a second-generation device that activates specific nerves through vibrotactile stimulation applied to the skin. Several major steps in this process were the iterative design process, physical prototyping, conceptual modeling, and benchtop testing. Furthermore, this next generation device was tested with epilepsy patients undergoing invasive monitoring (stereotactic electroencephalography, sEEG) to collect electrophysiological measurements via implanted electrodes in the brain. Early findings showed differential modulation of delta power in response to 2 Hz median nerve stimulation, but not during 12 Hz median nerve stimulation or 2 Hz ulnar nerve stimulation, hence indicating differential encoding of vibration features depending on frequency and spatial parameters. These patient trials also served to collect feedback for the continued development of the device to improve aspects such as ease of use, patient comfort, and ideal application of the vibration stimulus. Testing and development are ongoing with the enhancement of vibration isolating structures, more comfortable contact points, more durable additively manufactured structures, and embedded force sensors in the device.
{"title":"A RECONFIGURABLE, ADDITIVELY MANUFACTURED VIBROTACTILE STIMULATION DEVICE FOR CHRONIC PAIN","authors":"J. Adams, Phillip Demarest, Kara A Donovan, Dr. Peter Brunner, Dr. Harold Burton, Dr. Simon Haroutounian, Dr. Eric Leuthardt, Dr. Jenna Gorlewicz","doi":"10.1115/dmd2023-9337","DOIUrl":"https://doi.org/10.1115/dmd2023-9337","url":null,"abstract":"This paper presents an experimental chronic pain rehabilitation therapy utilizing vibration-based stimulation of the hand, wrist and lower arm, which has shown promise in reducing pain ratings in chronic pain patients (n=5) over a six-week treatment period. Based on the clinical need and practical use discoveries of that first trial, this paper outlines the development of a second-generation device that activates specific nerves through vibrotactile stimulation applied to the skin. Several major steps in this process were the iterative design process, physical prototyping, conceptual modeling, and benchtop testing. Furthermore, this next generation device was tested with epilepsy patients undergoing invasive monitoring (stereotactic electroencephalography, sEEG) to collect electrophysiological measurements via implanted electrodes in the brain. Early findings showed differential modulation of delta power in response to 2 Hz median nerve stimulation, but not during 12 Hz median nerve stimulation or 2 Hz ulnar nerve stimulation, hence indicating differential encoding of vibration features depending on frequency and spatial parameters. These patient trials also served to collect feedback for the continued development of the device to improve aspects such as ease of use, patient comfort, and ideal application of the vibration stimulus. Testing and development are ongoing with the enhancement of vibration isolating structures, more comfortable contact points, more durable additively manufactured structures, and embedded force sensors in the device.","PeriodicalId":325836,"journal":{"name":"2023 Design of Medical Devices Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131354615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Iman Salafian, Angie Englert, Allissa Morris, A. Groves, Christopher G. Rylander
Infants born extremely prematurely present significant clinical and population health challenges. Advances in clinical monitoring can potentially drive improvements in survival and long-term outcomes in this vulnerable population. In this study, a multi-function catheter with ECG, pressure, and temperature sensors is developed and the performance and ideal lead location are tested in a rat model. The ECG signals, transdiaphragmatic pressure, and core body temperature of the rat were recorded from a modified multi-electrode gastric feeding tube with one pressure sensor at the tip and another pressure sensor and temperature sensor at 6 cm from the trip. The ECG signals were obtained from esophageal electrodes in multiple locations and eventually, optimal electrode locations were identified at 4 and 6 cm from the tip of the feeding tube. Reliable pressure signals at a pressure range of 0-0.2psi (0-14 cm H2O) were obtained from pressure sensors placed above and below the diaphragm. A core temperature of ~41°C was recorded from the temperature sensor which was elevated relative to the rectal temperature measurements due to the experimental setup used. Our multifunction catheter proved to provide a reliable, strong, high resolution and low noise ECG signal from the esophageal electrodes in an animal model equivalent in size to the preterm infant. In addition, continuous pressure and temperature recordings can simultaneously be extracted, with all 3 sensors contained within a less than 3 mm diameter tube as is routinely used in this population. Integration of these multiple components into a feeding tube, which is already universally used in this population purely for nutrition, will provide significant advances in vital sign monitoring while reducing risk to vulnerable preterm infants.
极度早产的婴儿对临床和人口健康构成重大挑战。临床监测的进步可能会推动这一弱势群体的生存和长期预后的改善。在本研究中，研制了一种具有ECG、压力和温度传感器的多功能导管，并在大鼠模型中测试了其性能和理想导联位置。在改良的多电极胃饲管上记录大鼠的心电信号、经膈压和核心体温，其中一个压力传感器位于尖端，另一个压力传感器和温度传感器位于距离行程6 cm处。通过多个位置的食管电极获取心电图信号，最终确定了距离饲管尖端4 cm和6 cm的最佳电极位置。在0-0.2psi (0-14 cm H2O)的压力范围内，从隔膜上方和下方的压力传感器获得可靠的压力信号。从温度传感器记录到的核心温度为~41°C，由于使用的实验装置，温度传感器相对于直肠温度测量值升高。我们的多功能导管在与早产儿大小相当的动物模型中提供了可靠、强、高分辨率和低噪声的食管电极ECG信号。此外，可以同时提取连续的压力和温度记录，所有3个传感器都包含在直径小于3毫米的管中，这是该人群常规使用的。将这些多种成分整合到喂食管中，将在生命体征监测方面取得重大进展，同时降低易受伤害的早产儿的风险。在这一人群中，喂食管已经普遍用于营养。
{"title":"DEVELOPMENT AND TESTING OF A MULTIFUNCTION GASTRIC FEEDING TUBE CAPABLE OF VITAL SIGN MONITORING","authors":"Iman Salafian, Angie Englert, Allissa Morris, A. Groves, Christopher G. Rylander","doi":"10.1115/dmd2023-1926","DOIUrl":"https://doi.org/10.1115/dmd2023-1926","url":null,"abstract":"\u0000 Infants born extremely prematurely present significant clinical and population health challenges. Advances in clinical monitoring can potentially drive improvements in survival and long-term outcomes in this vulnerable population. In this study, a multi-function catheter with ECG, pressure, and temperature sensors is developed and the performance and ideal lead location are tested in a rat model. The ECG signals, transdiaphragmatic pressure, and core body temperature of the rat were recorded from a modified multi-electrode gastric feeding tube with one pressure sensor at the tip and another pressure sensor and temperature sensor at 6 cm from the trip.\u0000 The ECG signals were obtained from esophageal electrodes in multiple locations and eventually, optimal electrode locations were identified at 4 and 6 cm from the tip of the feeding tube. Reliable pressure signals at a pressure range of 0-0.2psi (0-14 cm H2O) were obtained from pressure sensors placed above and below the diaphragm. A core temperature of ~41°C was recorded from the temperature sensor which was elevated relative to the rectal temperature measurements due to the experimental setup used.\u0000 Our multifunction catheter proved to provide a reliable, strong, high resolution and low noise ECG signal from the esophageal electrodes in an animal model equivalent in size to the preterm infant. In addition, continuous pressure and temperature recordings can simultaneously be extracted, with all 3 sensors contained within a less than 3 mm diameter tube as is routinely used in this population. Integration of these multiple components into a feeding tube, which is already universally used in this population purely for nutrition, will provide significant advances in vital sign monitoring while reducing risk to vulnerable preterm infants.","PeriodicalId":325836,"journal":{"name":"2023 Design of Medical Devices Conference","volume":"296 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121721094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Cole, Shavonna Warren, Brian Kroeter, Michael E. Flatt, K. Nair, Martin J Morris, Julian Lin
With the current design for shunt systems used to treat hydrocephalus, tissue from the brain ventricle can cause blockages that obstruct cerebrospinal fluid (CSF) flow through the proximal catheter. Previous work demonstrated that the reversing of flow through the proximal catheter can restore flow through a blocked catheter. Periodic backwash through the proximal catheter can prevent obstructions and maintain adequate drainage. This project aims to design a pump that can periodically reverse the flow of CSF to backwash the proximal catheter. To reduce the complexity of the implanted components, a simple diaphragm pump can be externally actuated. Actuation of the pump can be achieved using an electromagnet located outside of the body; a metal cap placed on the diaphragm can be magnetically manipulated to pump CSF and backwash the proximal catheter. Testing demonstrates the feasibility of this pump design with an achieved flow rate of 3.4 to 4 mL/min. This bicorporal pump used as part of a backwashing system may favorably change the shunt failure rate and provide a more robust treatment for hydrocephalus.
{"title":"DESIGN OF BICORPORAL PUMP FOR THE TREATMENT OF HYDROCEPHALUS","authors":"D. Cole, Shavonna Warren, Brian Kroeter, Michael E. Flatt, K. Nair, Martin J Morris, Julian Lin","doi":"10.1115/1.4026706","DOIUrl":"https://doi.org/10.1115/1.4026706","url":null,"abstract":"\u0000 With the current design for shunt systems used to treat hydrocephalus, tissue from the brain ventricle can cause blockages that obstruct cerebrospinal fluid (CSF) flow through the proximal catheter. Previous work demonstrated that the reversing of flow through the proximal catheter can restore flow through a blocked catheter. Periodic backwash through the proximal catheter can prevent obstructions and maintain adequate drainage. This project aims to design a pump that can periodically reverse the flow of CSF to backwash the proximal catheter. To reduce the complexity of the implanted components, a simple diaphragm pump can be externally actuated. Actuation of the pump can be achieved using an electromagnet located outside of the body; a metal cap placed on the diaphragm can be magnetically manipulated to pump CSF and backwash the proximal catheter. Testing demonstrates the feasibility of this pump design with an achieved flow rate of 3.4 to 4 mL/min. This bicorporal pump used as part of a backwashing system may favorably change the shunt failure rate and provide a more robust treatment for hydrocephalus.","PeriodicalId":325836,"journal":{"name":"2023 Design of Medical Devices Conference","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121458413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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