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Removal of Subretinal Gas After Pneumatic Retinopexy Under Air Using External Manipulation.
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January 2025
The Retina Service of Wills Eye Hospital, Wills Eye Physicians-Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, PA.
Purpose: To illustrate a technique for the removal of subretinal gas via pars plana vitrectomy (PPV) with air-fluid exchange and simultaneous manipulation with scleral depression.
Methods: PPV to remove subretinal gas causing persistent macula-off retinal detachment was performed in one eye, and the results were evaluated in this case report. Ports were carefully placed to avoid puncturing the retina, which was significantly displaced anteriorly past the ora serrata due to the buoyancy of the subretinal gas with the patient in a supine position.
An esophageal stent integrated with wireless battery-free movable photodynamic-therapy unit for targeted tumor treatment.
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February 2025
Department of Radiation Oncology, Radiation Oncology Key Laboratory of Sichuan Province, Sichuan Clinical Research Center for Cancer, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, Affiliated Cancer Hospital of University of Electronic Science and Technology of China, Chengdu, 610041, China.
Article Synopsis
- Esophageal cancer ranks as the eighth most common type of cancer globally and is the sixth leading cause of cancer-related deaths.
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- The system integrates a light source for PDT to induce tumor cell death and an electrochemical pneumatic actuator that allows for real-time positioning of the light source, improving targeted therapy based on tumor progression.
An Octopus-Inspired Soft Pneumatic Robotic Arm.
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Department of Electrical and Computer Engineering, Hellenic Mediterranean University, GR-71410 Heraklion, Greece.
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- The paper discusses a soft robot arm inspired by the octopus, focusing on its design and control methods.
- The arm, made of soft silicone, features multiple pneumatically actuated chambers that allow for versatile bending, length adjustment, and twisting motions.
- The design includes experimental evaluation techniques that utilize visual feedback to track the arm's shape and position in real time.
Toward Damage-Less Robotic Fragile Fruit Grasping: A Closed-Loop Force Control Method for Pneumatic-Driven Soft Gripper.
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College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China.
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- Fragile fruits require careful handling, and current manual methods are labor-intensive, prompting the need for robotic solutions to ensure damage-free grasping.
- Pneumatic-driven soft grippers have benefits for food manipulation but face challenges due to their complex control systems, making robust grasping force control difficult.
- This study presents a double closed-loop control system, utilizing a Kalman filter and a PID controller to effectively manage grasping force in these grippers, achieving a maximum steady-state error of just 0.07 N and demonstrating effective control even under disturbances.
Low-Consumption and High-Efficiency Isotope Analysis by Microultrasonic Single-Droplet Nebulization Sampling Multicollector Inductively Coupled Plasma Mass Spectrometry.
Anal Chem
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State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan 430074, China.
Article Synopsis
- Metal stable isotopes are gaining popularity in fields such as planetary science and medical research, which necessitates efficient analysis methods for small and valuable samples.
- The study presents a new, highly efficient method called microultrasonic single-droplet nebulization (MUSDN) that significantly improves sensitivity for analyzing lithium (Li) and copper (Cu) isotopes compared to traditional techniques.
- MUSDN requires considerably less sample (1-2 ng) and is faster than conventional methods, showing excellent precision and accuracy validated against various standards and real serum samples, making it beneficial for isotope research with limited samples.
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