Uterus manipulators are one of the most useful tools utilized while performing Total Laparoscopic Hysterectomy (TLH). While highly convenient, there are many issues that are presented when using this surgical tool. Slipping, mobility, and the overwhelming varieties of manipulators all create a stressful environment for a surgeon performing this delicate procedure. This suggests that there is room for the development of a robust, multi-functional uterus manipulator that can minimize these issues, and thus create a safer and more effective surgical procedure in the operating room. As a proof-of-concept development, a 3-D Computer-Aided Design (CAD) model was produced and then simulated such that it could be tested for determining key parameters of deformation, degrees of freedom, and range of motion. From Finite Element Analysis (FEA), it was found that the suggested design can reduce slippage, has comparable range of motion to that of uterus manipulators on the market, and has increased flexion within the vaginal canal. These results encourage further development and testing to enhance the safety and efficacy of this new design.
{"title":"Design and Analysis of a 2-DOF Uterus Manipulator for Use During Total Laparoscopic Hysterectomy","authors":"Nicolette Fournelis, Sang-Eun Song","doi":"10.1115/dmd2022-1062","DOIUrl":"https://doi.org/10.1115/dmd2022-1062","url":null,"abstract":"\u0000 Uterus manipulators are one of the most useful tools utilized while performing Total Laparoscopic Hysterectomy (TLH). While highly convenient, there are many issues that are presented when using this surgical tool. Slipping, mobility, and the overwhelming varieties of manipulators all create a stressful environment for a surgeon performing this delicate procedure. This suggests that there is room for the development of a robust, multi-functional uterus manipulator that can minimize these issues, and thus create a safer and more effective surgical procedure in the operating room. As a proof-of-concept development, a 3-D Computer-Aided Design (CAD) model was produced and then simulated such that it could be tested for determining key parameters of deformation, degrees of freedom, and range of motion. From Finite Element Analysis (FEA), it was found that the suggested design can reduce slippage, has comparable range of motion to that of uterus manipulators on the market, and has increased flexion within the vaginal canal. These results encourage further development and testing to enhance the safety and efficacy of this new design.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131344602","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}
Robots are being widely used for minimally invasive surgery in various specialties. However, for minimally invasive spine surgery, the application of the robots has been limited to guidance of instrument placement. In this paper, as a part of the development of a tele-operated surgical robot for biportal endoscopic spine surgery, we present the development of robotized instruments for tissue removal. Surgical punch, pituitary and shaver, the instruments most widely used for bone and tendon removal in spine surgery, is modified for the surgical robot. Spine bone-breaking experiments have been conducted for the identification of design parameters and the resulting designs have been reported. Additionally, a prototype has been manufactured for each instrument.
{"title":"Development of Surgical Instruments for Robot- Assisted Biportal Endoscopic Spine Surgery(Bess)","authors":"Armanc Karakoyun, H. Seo, H. Han, Chunwoo Kim","doi":"10.1115/dmd2022-1010","DOIUrl":"https://doi.org/10.1115/dmd2022-1010","url":null,"abstract":"\u0000 Robots are being widely used for minimally invasive surgery in various specialties. However, for minimally invasive spine surgery, the application of the robots has been limited to guidance of instrument placement. In this paper, as a part of the development of a tele-operated surgical robot for biportal endoscopic spine surgery, we present the development of robotized instruments for tissue removal. Surgical punch, pituitary and shaver, the instruments most widely used for bone and tendon removal in spine surgery, is modified for the surgical robot. Spine bone-breaking experiments have been conducted for the identification of design parameters and the resulting designs have been reported. Additionally, a prototype has been manufactured for each instrument.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132218308","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}
T. Farrell, Patricia McCracken, Alexandria Lloyd, K. Falbo, Nicole Walker, A. Hansen, Matthew Sauerbrey, Jennifer Johansson, Brianna Rozell, Kevin E. Lawrence, Ryan T. Myers, Kristian J Dimatteo, Thane R. Hunt, Michaelina Dupnik, Sara R. Koehler-McNicholas
Increases in residual-limb temperatures can occur simply by donning a lower-limb prosthesis and walking. Intrasocket temperatures can also remain elevated long after an activity ends. To address problems associated with activity-related increases in intrasocket temperatures (e.g., discomfort, decreased prosthesis use, lost suspension, residual-limb skin breakdown), an innovative Intrasocket Cooling Element (ICE) system has been developed and tested on ten, transtibial prosthesis users. This report describes the design of the thermo-electric driven, active-cooling ICE system and presents the results of both in-laboratory and at-home testing. Given the capacity for the ICE system to moderate intrasocket temperatures during controlled bouts of in-laboratory exercise, future testing will explore the potential for this technology to reduce the incidence of residual-limb skin issues and improve quality of life outcome measures among a cohort of lower-limb prosthesis users.
{"title":"Development of an Active-Cooling System for Improving Residual-Limb Skin Care in Persons with Lower-Limb Amputation","authors":"T. Farrell, Patricia McCracken, Alexandria Lloyd, K. Falbo, Nicole Walker, A. Hansen, Matthew Sauerbrey, Jennifer Johansson, Brianna Rozell, Kevin E. Lawrence, Ryan T. Myers, Kristian J Dimatteo, Thane R. Hunt, Michaelina Dupnik, Sara R. Koehler-McNicholas","doi":"10.1115/dmd2022-1040","DOIUrl":"https://doi.org/10.1115/dmd2022-1040","url":null,"abstract":"\u0000 Increases in residual-limb temperatures can occur simply by donning a lower-limb prosthesis and walking. Intrasocket temperatures can also remain elevated long after an activity ends. To address problems associated with activity-related increases in intrasocket temperatures (e.g., discomfort, decreased prosthesis use, lost suspension, residual-limb skin breakdown), an innovative Intrasocket Cooling Element (ICE) system has been developed and tested on ten, transtibial prosthesis users. This report describes the design of the thermo-electric driven, active-cooling ICE system and presents the results of both in-laboratory and at-home testing. Given the capacity for the ICE system to moderate intrasocket temperatures during controlled bouts of in-laboratory exercise, future testing will explore the potential for this technology to reduce the incidence of residual-limb skin issues and improve quality of life outcome measures among a cohort of lower-limb prosthesis users.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132381366","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}
Hannah Harris, Adia Radecka, Raefa Malik, R. A. Pineda Guzman, Jeffrey W. Santoso, Alyssa Bradshaw, Megan L. McCain, M. Kersh, Holly M. Golecki
While the field of medical device design has made tremendous progress in recent decades, implantable devices continue to be plagued by the body’s immune response and fibrosis. The field of soft robotics uses low modulus materials that compliance match surrounding tissues to help address this issue. Traditionally, silicone has been the material of choice for soft robots. Although durable and elastic, implanted silicone often leads to fibrosis. To advance the use of soft robotics in medical devices, new materials must be explored. We hypothesize that protein-based soft robotic actuators hold promise for implantable medical devices by not only matching moduli surrounding tissues but also providing physiologically relevant chemical cues. Biocompatible soft actuators that achieve the functionality of silicone counterparts may promote integration with host cells and support long-term implant safety. Additionally, controlled degradation may hold promise for post-surgical support devices or drug delivery. Here, we develop and characterize crosslinked gelatin (GEL) actuators. The development of biomaterial soft actuators with properties comparable to synthetic analogues expands the applications of soft robotic devices for medical devices and healthcare applications.
{"title":"Development and Characterization of Biostable Hydrogel Robotic Actuators for Implantable Devices: Tendon Actuated Gelatin","authors":"Hannah Harris, Adia Radecka, Raefa Malik, R. A. Pineda Guzman, Jeffrey W. Santoso, Alyssa Bradshaw, Megan L. McCain, M. Kersh, Holly M. Golecki","doi":"10.1115/dmd2022-1049","DOIUrl":"https://doi.org/10.1115/dmd2022-1049","url":null,"abstract":"\u0000 While the field of medical device design has made tremendous progress in recent decades, implantable devices continue to be plagued by the body’s immune response and fibrosis. The field of soft robotics uses low modulus materials that compliance match surrounding tissues to help address this issue. Traditionally, silicone has been the material of choice for soft robots. Although durable and elastic, implanted silicone often leads to fibrosis. To advance the use of soft robotics in medical devices, new materials must be explored. We hypothesize that protein-based soft robotic actuators hold promise for implantable medical devices by not only matching moduli surrounding tissues but also providing physiologically relevant chemical cues. Biocompatible soft actuators that achieve the functionality of silicone counterparts may promote integration with host cells and support long-term implant safety. Additionally, controlled degradation may hold promise for post-surgical support devices or drug delivery. Here, we develop and characterize crosslinked gelatin (GEL) actuators. The development of biomaterial soft actuators with properties comparable to synthetic analogues expands the applications of soft robotic devices for medical devices and healthcare applications.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114306862","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}
Endotracheal intubation is a common procedure that is performed for patients who are unable to adequately breathe. This procedure is often more successful when performed inside a hospital, but there are emergency situations that require out of hospital intubations. For both in-hospital and out of hospital, the statistics for flawed and failed intubation attempts are high. The primary risk associated with prolonged and failed intubation attempts are hypoxia leading to brain injury and death. To mitigate these risks, a motion-based feedback training system is proposed. Experimentation is performed to track the position of a laryngoscope during a manikin intubation. It was found that during intubation there was a significant range of motion in the x direction up to 120 and 114 mm. Also, it was found that for one trial the tortuosity value was significantly higher at 75. Overall results show that significant delicate movements are necessary, and that user movement varied between cases.
{"title":"Motion Based Feedback System for Endotracheal Intubation","authors":"Ashley Sturgeon, Elie Sarraf, J. Moore","doi":"10.1115/dmd2022-1024","DOIUrl":"https://doi.org/10.1115/dmd2022-1024","url":null,"abstract":"\u0000 Endotracheal intubation is a common procedure that is performed for patients who are unable to adequately breathe. This procedure is often more successful when performed inside a hospital, but there are emergency situations that require out of hospital intubations. For both in-hospital and out of hospital, the statistics for flawed and failed intubation attempts are high. The primary risk associated with prolonged and failed intubation attempts are hypoxia leading to brain injury and death. To mitigate these risks, a motion-based feedback training system is proposed. Experimentation is performed to track the position of a laryngoscope during a manikin intubation. It was found that during intubation there was a significant range of motion in the x direction up to 120 and 114 mm. Also, it was found that for one trial the tortuosity value was significantly higher at 75. Overall results show that significant delicate movements are necessary, and that user movement varied between cases.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130395061","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, Colton Doherty, E. Leuthardt, J. Gorlewicz
Vagus Nerve Stimulation (VNS) is a therapy providing electrical stimulation directly to the vagus nerve via surgical implantation, and is currently FDA approved for the treatment of drug resistant epilepsy and depression. Transcutaneous Vagus Nerve Stimulation (taVNS) has recently been explored through electrical and vibrotactile stimulation via the cymba conchae region of the ear. taVNS is still in early testing, and is showing promise as a non-invasive alternative for VNS. However, published research has shown limitations in stimulation devices and the specific sites, frequency and intensity of taVNS treatments. In this paper, a new device for vibrotactile stimulation of the cymba conchae is presented covering a range of vibration frequencies and intensities. This is the first iteration in a series of iterative prototypes of additively manufactured wearable devices with proof of concept electronics to realize this type of vibration therapy. Functionality tests of this device such as battery performance and variability of signal intensity were explored, coupled with user assessments of comfort. Initial findings have provided critical feedback for shaping the next iteration of this device, which will be designed for use in clinical evaluations of vibration therapy of the cymba conchae.
{"title":"A Vibrotactile Wearable for the Ear for Vagus Nerve Stimulation","authors":"J. Adams, Colton Doherty, E. Leuthardt, J. Gorlewicz","doi":"10.1115/dmd2022-1047","DOIUrl":"https://doi.org/10.1115/dmd2022-1047","url":null,"abstract":"\u0000 Vagus Nerve Stimulation (VNS) is a therapy providing electrical stimulation directly to the vagus nerve via surgical implantation, and is currently FDA approved for the treatment of drug resistant epilepsy and depression. Transcutaneous Vagus Nerve Stimulation (taVNS) has recently been explored through electrical and vibrotactile stimulation via the cymba conchae region of the ear. taVNS is still in early testing, and is showing promise as a non-invasive alternative for VNS. However, published research has shown limitations in stimulation devices and the specific sites, frequency and intensity of taVNS treatments. In this paper, a new device for vibrotactile stimulation of the cymba conchae is presented covering a range of vibration frequencies and intensities. This is the first iteration in a series of iterative prototypes of additively manufactured wearable devices with proof of concept electronics to realize this type of vibration therapy. Functionality tests of this device such as battery performance and variability of signal intensity were explored, coupled with user assessments of comfort. Initial findings have provided critical feedback for shaping the next iteration of this device, which will be designed for use in clinical evaluations of vibration therapy of the cymba conchae.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125480156","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}
Irreversible electroporation has regained a new popularity as a robust and effective ablation modality. One concern however that remains is the optimization of the several parameters to further implement the technology in medical therapies; one of the most important effects is the mitigation of muscle stimulation. Here we present the induced contractile force on swine skeletal muscle after delivery of irreversible electroporation therapies. We aim to evaluate two differing waveforms, the classic irreversible electroporation, IRE, with monophasic DC pulses of 100μs pulse widths, and a waveform of High Frequency Irreversible Electroporation, HFIRE. We observed that the short duration pulses of HFIRE, biphasic 2μs pulse width, effectively induced no contractile forces on skeletal muscle. In contrast IRE induced large contractions.
{"title":"Assessment of Contractile Forces of Swine Skeletal Muscle Following Irreversible Electroporation Therapy","authors":"R. Brigham, D. Ramirez, P. Iaizzo","doi":"10.1115/dmd2022-1070","DOIUrl":"https://doi.org/10.1115/dmd2022-1070","url":null,"abstract":"\u0000 Irreversible electroporation has regained a new popularity as a robust and effective ablation modality. One concern however that remains is the optimization of the several parameters to further implement the technology in medical therapies; one of the most important effects is the mitigation of muscle stimulation.\u0000 Here we present the induced contractile force on swine skeletal muscle after delivery of irreversible electroporation therapies. We aim to evaluate two differing waveforms, the classic irreversible electroporation, IRE, with monophasic DC pulses of 100μs pulse widths, and a waveform of High Frequency Irreversible Electroporation, HFIRE. We observed that the short duration pulses of HFIRE, biphasic 2μs pulse width, effectively induced no contractile forces on skeletal muscle. In contrast IRE induced large contractions.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124066253","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}
Emily J. Smith, Catherine Stauffer, Natalie Ramsy, Nina Chen, Benjamin Salzberg, Sander Sudrzynski, Holly M. Golecki
To help the growing visually impaired population navigate their surroundings, we propose a low-cost device for the detection of obstacles using ultrasound technology. Existing “smart-canes” are largely add-on devices used in conjunction with the white cane and are significantly more costly than the traditional white cane. Our device, Enhancing Your Everyday Sight (EYES), is a handheld visual assistive tool that allows users with visual impairment to scan their surroundings at different levels in order to sense physical barriers, including ground elevation changes. EYES offers a similar experience as using a white cane by giving real-time haptic feedback in the form of vibrations within the handle. Distinct vibration patterns from within the handle inform the user of both the distance and height of obstacles. Using ultrasonic sensors to provide scanned input allows users to detect obstacles at ground level and chest level, distinguishing our device from the traditional white cane. Following market and user research and iterative prototype testing, we assembled our initial prototype with off-the-shelf electronics components and 3D-printed housing, thus demonstrating the feasibility of a market-ready product at a more affordable cost compared to existing solutions. After further development, this device may serve as an important tool in enabling more confidence, greater independence, and less stigma to the visually impaired community.
{"title":"Enhancing Your Everyday Sight: An Ultrasonic Visual Aid","authors":"Emily J. Smith, Catherine Stauffer, Natalie Ramsy, Nina Chen, Benjamin Salzberg, Sander Sudrzynski, Holly M. Golecki","doi":"10.1115/dmd2022-1017","DOIUrl":"https://doi.org/10.1115/dmd2022-1017","url":null,"abstract":"\u0000 To help the growing visually impaired population navigate their surroundings, we propose a low-cost device for the detection of obstacles using ultrasound technology. Existing “smart-canes” are largely add-on devices used in conjunction with the white cane and are significantly more costly than the traditional white cane. Our device, Enhancing Your Everyday Sight (EYES), is a handheld visual assistive tool that allows users with visual impairment to scan their surroundings at different levels in order to sense physical barriers, including ground elevation changes. EYES offers a similar experience as using a white cane by giving real-time haptic feedback in the form of vibrations within the handle. Distinct vibration patterns from within the handle inform the user of both the distance and height of obstacles. Using ultrasonic sensors to provide scanned input allows users to detect obstacles at ground level and chest level, distinguishing our device from the traditional white cane. Following market and user research and iterative prototype testing, we assembled our initial prototype with off-the-shelf electronics components and 3D-printed housing, thus demonstrating the feasibility of a market-ready product at a more affordable cost compared to existing solutions. After further development, this device may serve as an important tool in enabling more confidence, greater independence, and less stigma to the visually impaired community.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123031031","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}
Transcatheter aortic valve replacement (TAVR) is often the clinical choice for patients with severe aortic stenosis or as an alternative to surgical aortic valve replacement for high-risk patients. In these patients, the incidence of complications, including aortic annular rupture, coronary occlusion, and newonset atrial fibrillation is just under five percent. The Visible Heart® Laboratories have a library of over 500 perfusion-fixed human hearts preserved in formalin. These specimens can be utilized to better understand aortic valvular function associated with various diseased states with proper pulsatile profusion. This preclinical benchtop model could also be used for the testing of TAVR devices: e.g., to better understand proper placement techniques. Here we describe the continued development of a pulsatile perfusion apparatus constructed to assess the aortic valve function of these human heart specimens: i.e., pre- and post- TAVR deployment. Multi-modal imaging can be utilized, including videoscopes, fluoroscopy, and echocardiography. Resultant placements, the device-tissue interface within the valvular annulus can be subsequently assessed using micro-CT imaging. This pre-clinical approach also allows for this unique human heart. Specimens to be utilized numerous times, providing real anatomical scenarios for the testing of these devices.
{"title":"The Use of a Pulsatile Perfusion Apparatus for the Assessment of Aortic Valve Function within Formalin Fixed Human Hearts: Pre- And Post-Tavr Implantation with Subsequent Micro-CT Analyses","authors":"Michael A. Bielecki, P. Iaizzo","doi":"10.1115/dmd2022-1059","DOIUrl":"https://doi.org/10.1115/dmd2022-1059","url":null,"abstract":"\u0000 Transcatheter aortic valve replacement (TAVR) is often the clinical choice for patients with severe aortic stenosis or as an alternative to surgical aortic valve replacement for high-risk patients. In these patients, the incidence of complications, including aortic annular rupture, coronary occlusion, and newonset atrial fibrillation is just under five percent. The Visible Heart® Laboratories have a library of over 500 perfusion-fixed human hearts preserved in formalin. These specimens can be utilized to better understand aortic valvular function associated with various diseased states with proper pulsatile profusion. This preclinical benchtop model could also be used for the testing of TAVR devices: e.g., to better understand proper placement techniques. Here we describe the continued development of a pulsatile perfusion apparatus constructed to assess the aortic valve function of these human heart specimens: i.e., pre- and post- TAVR deployment. Multi-modal imaging can be utilized, including videoscopes, fluoroscopy, and echocardiography. Resultant placements, the device-tissue interface within the valvular annulus can be subsequently assessed using micro-CT imaging. This pre-clinical approach also allows for this unique human heart. Specimens to be utilized numerous times, providing real anatomical scenarios for the testing of these devices.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133645558","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}
Carly L. Donahue, Mu’ath Adlouni, D. Choksi, Brendan D’Souza, Zachary I Richards, R. Sims, IV
At the beginning of the COVID-19 pandemic, many hospitals and healthcare institutions lacked an adequate supply of masks and other personal protective equipment. Moreover, protocols that were in place to ensure healthcare workers had appropriately sized masks consumed precious time and resources. Any determination of a user’s correct respirator size demanded an in-person assessment and had the potential to waste multiple respirators. Here we introduce IBARS (Image-based Application for Respirator Sizing), a novel tool which provides respirator size recommendations based on a facial image and basic user demographics. This solution obviates the need for an in-person assessment, providing an accurate size recommendation within seconds. The application has the potential to reduce time-per-worker respirator fitting, reduce overall respirator usage, and increase safety by providing hospitals with a non-contact option for sizing. Furthermore, future applications may assist healthcare institutions optimize supply chains by providing rapid assessments and re-assessments of appropriate respirator sizes used by their workers. Early testing indicated accuracy of 71.3% for the software (N=16), and further testing is underway at Houston Methodist Hospital.
{"title":"Image-Based Web Application for Respirator Sizing: Contactless Mask-Fitting During a Pandemic","authors":"Carly L. Donahue, Mu’ath Adlouni, D. Choksi, Brendan D’Souza, Zachary I Richards, R. Sims, IV","doi":"10.1115/dmd2022-1033","DOIUrl":"https://doi.org/10.1115/dmd2022-1033","url":null,"abstract":"\u0000 At the beginning of the COVID-19 pandemic, many hospitals and healthcare institutions lacked an adequate supply of masks and other personal protective equipment. Moreover, protocols that were in place to ensure healthcare workers had appropriately sized masks consumed precious time and resources. Any determination of a user’s correct respirator size demanded an in-person assessment and had the potential to waste multiple respirators. Here we introduce IBARS (Image-based Application for Respirator Sizing), a novel tool which provides respirator size recommendations based on a facial image and basic user demographics. This solution obviates the need for an in-person assessment, providing an accurate size recommendation within seconds. The application has the potential to reduce time-per-worker respirator fitting, reduce overall respirator usage, and increase safety by providing hospitals with a non-contact option for sizing. Furthermore, future applications may assist healthcare institutions optimize supply chains by providing rapid assessments and re-assessments of appropriate respirator sizes used by their workers. Early testing indicated accuracy of 71.3% for the software (N=16), and further testing is underway at Houston Methodist Hospital.","PeriodicalId":236105,"journal":{"name":"2022 Design of Medical Devices Conference","volume":"258 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132440520","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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