2023 Scientific Poster Session - Tuesday

Authors: Madison Reddie, Gari Eberly, Aviva Jesse Levi, Diego Quevedo-Moreno, Keegan Mendez and Ellen T. Roche

Authors:  Michael Bielecki, Amanda DeVos and Paul Iaizzo

Authors: Rutuja Shinde, Sharanya Manga, Neha Muthavarapu, Keerthy Gopalakrishnan, Christopher Aakre, Alexander Ryu and Shivaram Arunachalam

Authors: Amanda DeVos and Paul Iaizzo

Authors: Nathan Johnson and Matthew Johnson

Authors:  Katelyn Hampton, Megan Locknar, Harshini Vasudevanallur, Eric Anderson, Marcus Cummings, Julian Lin and Martin Morris

Authors:  Dong-Ho Lee, Joonhwan Kim, Jungmin Han, Hyeonse Seo, Joo Yong Lee, Sung Yong Cho, Hyung Keun Park and Dong-Soo Kwon

Abstract: Traditional laparoscopy is a surgical method that involves the use of several small tools inserted into the body through small incisions, and a small camera to provide visualization of the surgical field. This method allows for decreased risk of infection, rapid healing time, and reduced scarring of the incision sites. Currently, the most advanced form of this technique is robotic laparoscopic surgery, where a robot performs master-slave operations controlled by a surgeon. While very precise, this system is extraordinarily complex, and requires special operating room arrangements so that typical hospital setup cannot afford such systems remaining with traditional laparoscopy. Thus, an intermediary device that bridges the gap between traditional laparoscopic surgery and robotic laparoscopic surgery, while remaining cost-effective and practical, has been sought and a concept of a semi-robotic system has been designed.

Authors: Nicolette Fournelis, Aseela Samsam and Sang-Eun Song

Authors:  Matthew Baysa, Noah Turoski, Manilyn Cabrera and Yen-Lin Han

This paper details the design of a mechanism to assist the wheelchair user during actions like standing up and sitting down. The original structural design of a commercial basic wheelchair has been retained, therefore, the proposed 3-bar mechanism which creates an angular displacement for the seat through a linear actuator has been intended to match the dimensions and shaping of a commercial wheelchair. Moreover, the mechanism has been reasoned to be easy to manufacture and install, besides, it must support the weight of the wheelchair user. For this reason, the design is based on kinematic synthesis and results of simulations with SolidWorks showing a correct trajectory of motion and the required force by the actuator concerning the available device.

Authors:  Verónica Jasso, Felipe Torres, Israel Martínez, Diego Núñez and Martha Hernández

Abstract: Patients with titinopathy or hand paralysis often lack quality, low cost therapeutic tools to aid in gaining hand strength and range of motion. As a result, our team sought to develop a way to increase flexion and passive motion in the hand of a patient with titinopathy in order to gain functionality. The team was contacted by a Texas A&M University alumna who was looking for a device to help her 4-year-old son with titinopathy, a muscular disorder caused by the congenital malformation of the titin protein. The patient is unable to move his distal and proximal interphalangeal (DIP/PIP) finger joints, preventing him from performing daily tasks. To address his need, our team has developed a low-cost hand movement glove (HMG) to be used as a supplement to traditional physical therapy.

Authors: Shourya Kumar, Charles Foster, Hannah Bass and Akshaya Santhanaraj

Abstract: This work covers various fluid performance tests that were run in order to evaluate how the Convection Enhanced Thermochemotherapy Catheter System (CETCS) compares to a predicate device, the Cleveland Multiport Catheter (CMC). The completion of these tests will help prove the CETCS device is as safe and effective as the CMC device and should be able to go through the 510(k) pathway.

Authors: Brianna Morales and Chris Rylander

Authors:  Shivam Damani, Arshia Sethi, Bhavana Baraskar, Keerthy Gopalakrishnan, Joshika Agarwal, Hasan Albitar, Vaibhav Ahluwalia, Sue Ann Donlinger, Vivek Iyer and Shivaram Arunachalam

Authors:  Jieun Lee, Vaishnavi K. Modi, Renisha Redij, Srikanth Gadam, Keerthy Gopalakrishnan, Anjali Rajagopal, Cadman L. Leggett and Shivaram P. Arunachalam

Abstract: Capillary refill time is the time it takes for blanched skin tissue under pressure to return to its normal state when that pressure is released. The test is commonly performed by clinicians on the fingertip to assess for signs of shock such as septic, traumatic, or hypovolemic. Current methods of capillary refill time measurement are either subjective, binary, user dependent or require specialized equipment.

A more standardized and objective measurement of capillary refill time has been shown to improve the diagnosis of pediatric dehydration. We have developed capillary refill index, a digital version of the capillary refill test utilizing only a smartphone and without the use of specialized equipment. The purpose of this mobile application is to broaden the utility of capillary refill index for clinical assessment. Our aim is to determine the accuracy and precision of a smartphone-based capillary refill index in a population of healthy pediatric subjects.

Authors:  Jonathan Strutt, Chunjong Park, Devesh Sarda, Sixuan Wu, Girish Narayanswamy, Matthew Thompson, Lauren Harvey, Rachel Hedstrom, Amy Kodet, Shwetak Patel and Alex Mariakakis

Designing an effective antenna is very important to utilize microwave imaging. A high gain antipodal antenna designed with ultra-wideband frequency range is presented here. The simulated results are validated with measured data. The antenna can operate within the Ultra band frequency range of 3 to 8 GHz.  The maximum gain of 2.96 dBi is obtained at 4 GHz.  An experiment with biological tissues is also done to show the effectiveness of the antenna using as a resonator.

Authors:  Poulami Samaddar, Tasin Nusrat, Sunil Gaddam, Cadman L. Leggett, Shuvashis Dey, Dipankar Mitra, Sayan Roy and Shivaram P. Arunachalam

Authors:  Mohammad E. Shakeri Jannati, Sarah O'Byrne and Zahra Moussavi

Abstract: Trinity Tube: Infants born extremely prematurely present significant clinical and population health challenges. Advances in clinical vital sign monitoring can potentially drive improvements in survival and long-term outcomes in this vulnerable population. Our Trinity Tube is a multifunction feeding and venting tube that includes wireless vital sign monitoring and quantified metrics of work of breathing by sensors embedded in a feeding tube indwelling inside the esophagus and stomach instead of using irritant skin-mounted sensors. Trinity tube is the next-generation solution for neonatal vital sign monitoring.

Authors: Iman Salafian, Angie Englert, Allissa Morris, Alan Groves and Chris Rylannder

Authors:  Blayton Padasdao and Bardia Konh

Abstract: A novel biomechanical guidance system (BGS) for markerless intra-operative bone tracking that seamlessly integrates into the surgical setting was recently developed [1]. It utilizes 3D models from pre-operative CT, via 3D-to-2D registration methods, to update object poses based on 2D fluoroscopic images. However, on occasion pre-operative CT images may be unavailable. We developed a CT-free method to enable BGS use that leverages neural radiance fields (NeRF) to generate a continuous volumetric scene [2,3] from intra-operative fluoroscopy. For proof of concept, digitally reconstructed radiographs (DRRs) were created from pelvic CT data as a stand-in for intra-operative fluoroscopy. DRRs and virtual C-arm positions were fed into an existing NeRF scene reconstruction system,[2,3] and bones were segmented from the reconstruction. The accuracy of NeRF-derived segmentations was evaluated by comparison to gold-standard CT segmentation. The number of input DRRs was varied to study how this parameter influences reconstructions. Volume reconstructions were readily obtained using the NeRF scene reconstruction system. RMS errors of the NeRF-derived segmentations ranged from 1.23 mm when using 36 input DRR images to 1.98 mm when using only 8 input DRR images. Based on this performance, we conclude that CT-free NeRF volume reconstruction from intra-operative fluoroscopy holds great potential for use in surgical navigation applications involving bony procedures.

Authors: Marcus Tatum, Geb Thomas and Don Anderson

Authors:  Samuel Lafreniere, Kyle Tran and Bardia Konh

Abstract: In this paper, we present a solution for a surgical stapler with increased mobility at the articulation joint for colorectal minimally invasive surgery. Having broken the main problem down into a few primary sub-problems, we introduce the solution options available for each sub-problem as well as a synthesized model based on the usage of cables to transmit forces to the jaw area of the instrument. CAD modelling and an early prototype suggest feasibility of this approach.

Authors: Nick Swerczek, Carl A. Nelson and Mark A. Carlson

Authors:  Leah Thomas, Seth Jarvis, Laura Wenger, Tara Newberry, Andre Muelenaer and Christopher Arena