Untethered microgripper-the dexterous hand at microscale.

Untethered microgripper-the dexterous hand at microscale. Biomed Microdevices. 2019 Aug 15;21(4):82 Authors: Yin C, Wei F, Zhan Z, Zheng J, Yao L, Yang W, Li M Abstract Untethered microgrippers that can navigate in hard-to-reach and unpredictable environments are significantly important for biomedical applications such as targeted drug delivery, micromanipulation, minimally invasive surgery and in vivo biopsy. Compared with the traditional tethered microgrippers, the wireless microgrippers, due to the exceptional characteristics such as miniaturized size, untethered actuation, dexterous and autonomous motion, are projected to be promising microtools in various future applications. In this review, we categorize the untethered microgrippers into five major classes, i.e. microgrippers responsive to thermal, microgrippers actuated by magnetic fields, microgrippers responsive to chemicals, light-driven microgrippers and hybrid actuated microgrippers. Firstly, the actuation mechanisms of these microgrippers are introduced. The challenges faced by these microgrippers are also covered in this part. With that, the fabrication methods of these microgrippers are summarized. Subsequently, the applications of microgrippers are presented. Additionally, we conduct a comparison among different actuation mechanisms to explore the advantages and potential challenges of various types of microgrippers. In the end of this review, conclusions and outlook of the development an...
Source: Biomedical Microdevices - Category: Biomedical Engineering Authors: Tags: Biomed Microdevices Source Type: research

Related Links:

Publication date: Available online 20 September 2019Source: Cirugía Española (English Edition)Author(s): Javier Osorio, Joaquín Rodríguez-Santiago, Josep Roig, Manuel PeraAbstractSurgical treatment of oesophagogastric junction adenocarcinomas is based on total gastrectomies or oesophagectomies, which are complex procedures with potentially high morbidity and mortality. Population-based registers show a considerable variability of protocols and outcomes among different hospitals and regions. One of the main strategies to improve global results is centralization at high-volume hospitals, a process...
Source: Cirugia Espanola - Category: Surgery Source Type: research
Publication date: Available online 19 September 2019Source: Arthroscopy TechniquesAuthor(s): Kai Man Chu, Tun Hing LuiAbstractSubfibular impingement is a common cause of lateral heel pain after calcaneal fracture. It can be caused by calcaneofibular impingement, peroneal impingement, or a combination thereof. It may not be easy to differentiate bony impingement from soft-tissue impingement. Simultaneous lateral calcaneal ostectomy and peroneal tendon decompression may increase the chance of pain relief. The purpose of this Technical Note was to report the technical details of endoscopic lateral calcaneal ostectomy and pero...
Source: Arthroscopy Techniques - Category: Surgery Source Type: research
Authors: Sephton BM Abstract Over the last two decades, advances and adaptation of technology have led to a variety of endoscopic thyroidectomy procedures being performed. The drive for extracervical procedures has been predominantly influenced by the desire for improved cosmesis via avoidance of visible scars. Extracervical techniques have shown considerable evolution with approaches that have included transaxillary, breast, postauricular, and transoral routes. There has been a varied evidence base for each of these approaches with regard to technical feasibility, safety, patient satisfaction, and cost-effectivene...
Source: Minimally Invasive Surgery - Category: Surgery Tags: Minim Invasive Surg Source Type: research
Publication date: October 2019Source: The Annals of Thoracic Surgery, Volume 108, Issue 4Author(s): Robert Spiller, Trever Symalla, Mackenzie McCrorey, Husam H. BalkhyRobotic-assisted approaches in cardiac surgery are becoming an increasingly common form of minimally invasive surgery. Recent literature has shown robotic-assisted techniques to be superior to traditional sternotomy in infection rates, bleeding, length of hospital stay, and postoperative quality of life. Although there are growing numbers of centers performing robotic mitral valve (MV) surgery, this approach is usually reserved for first-time MV repair. This ...
Source: The Annals of Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Source Type: research
Journal of Laparoendoscopic&Advanced Surgical Techniques, Ahead of Print.
Source: Journal of Laparoendoscopic - Category: Surgery Authors: Source Type: research
Publication date: Available online 13 September 2019Source: Current Medicine Research and PracticeAuthor(s): Parmeshwar Bambrule, Mohammad Taha Mustafa Sheikh, Tarun Mittal, Vinod K. Malik
Source: Current Medicine Research and Practice - Category: General Medicine Source Type: research
Publication date: Available online 13 September 2019Source: Journal of ColoproctologyAuthor(s): Jagan Balu, Sankar Subramanian, Suresh P, Shankar Narayanan AP, Amamndeep Sing SandhuAbstractHere we describe an infrequent case of gastrointestinal stromal tumor of the rectum in a 57 year-old man with spindle cell neoplasm probably gastrointestinal stromal tumor and CT scan showed tumor from the anterior rectal wall and offered abdominoperineal resection for the same. The patient was started on imatinib and had a significant reduction in symptoms. The patient was reassessed with the CT scan, which showed a reduction in tumor s...
Source: Journal of Coloproctology - Category: Gastroenterology Source Type: research
Publication date: Available online 14 September 2019Source: The Annals of Thoracic SurgeryAuthor(s): Ruochuan Zang, Ju-Fang Shi, Toni E. Lerut, Le Wang, Chia-Chuan Liu, Alessandro Brunelli, René Horsleben Petersen, Calvin Sze Hang Ng, Eric Lim, Shugeng Gao, AME Thoracic Surgery Collaborate GroupAbstractBackgroundLung cancer has changed significantly during the past two decades in its epidemiology and treatment. We conducted a retrospective analysis using data from seven major areas of China over ten years to evaluate clinicopathologic and surgical treatment trends of lung cancer in China during the past decadeMethod...
Source: The Annals of Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Source Type: research
Abstract BACKGROUND: Lung cancer has changed significantly during the past two decades in its epidemiology and treatment. We conducted a retrospective analysis using data from seven major areas of China over ten years to evaluate clinicopathologic and surgical treatment trends of lung cancer in China during the past decade METHODS: Data from 7184 primary lung cancer patients treated between 2005 and 2014 in eight provinces over China were retrospectively collected. Their clinicopathologic features and surgical treatment information were recorded. Simple linear regression models and Cochran-Armitage Trend test were...
Source: The Annals of Thoracic Surgery - Category: Cardiovascular & Thoracic Surgery Authors: Tags: Ann Thorac Surg Source Type: research
Publication date: Available online 12 September 2019Source: Arthroscopy TechniquesAuthor(s): Tun Hing Lui, Yue Ting Ophelia WanAbstractOs subfibulare is an ossicle at the tip of the lateral malleolus. The ossicle is sometimes symptomatic and presents with local pain or lateral ankle instability. The purpose of this Technical Note is to describe the details of arthroscopic stabilization of the os subfibulare. It is indicated for symptomatic mechanical lateral ankle instability resulting from an unstable os subfibulare. The technique has the advantages of minimally invasive surgery, evaluation and treatment of concomitant an...
Source: Arthroscopy Techniques - Category: Surgery Source Type: research
More News: Biomedical Engineering | Chemistry | Environmental Health | Minimally Invasive Surgery