Subdural Electrocorticogram Measurement with a Minimally-Invasive Procedure Using an SMA-Manipulated Microelectrode Array

2011 ◽  
Vol 222 ◽  
pp. 313-317 ◽  
Author(s):  
Toshitaka Yamakawa ◽  
Takeshi Yamakawa ◽  
S. Aou ◽  
Satoru Ishizuka ◽  
M. Suzuki ◽  
...  
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Microelectrode Array ◽  
Evoked Potential ◽  
Electrode Array ◽  
Invasive Procedure ◽  
Minimally Invasive Procedure ◽  
Subdural Electrode ◽  
Invasive Method

We propose a subdural electrode array guided by a 0.3mm-diamter shape memory alloy guidewire for a minimally-invasive method of electrocorticogram recording. The measured electric characteristics showed that the proposed electrodes are compatible with the application of electrocorticogram recording. Somatosensory evoked potential was measured by the proposed method in the animal test in vivo. The results confirmed that the proposed electrode array is available for the electrocorticogram recording under a minimally-invasive surgery.

Detection of diuretic doping by capillary electrophoresis and electrochemical technology: a mini-review

2020 ◽  
Vol 17 ◽  
Author(s):  
Ping Nan
Keyword(s):  
Capillary Electrophoresis ◽  
Minimally Invasive ◽  
Sampling Method ◽  
Invasive Procedure ◽  
Minimally Invasive Procedure ◽  
Sample Analysis ◽  
Detection Technology ◽  
Electrochemical Technology ◽  
Invasive Method ◽  
Performance Enhancing Drugs

: Athletes are not allowed to use performance-enhancing drugs. Despite many efforts, the use of performanceenhancing drugs in sports persists. Doping testing in athletes is the main way to determine doping. Taking biological samples from athletes can be used to detect doping. The least invasive method is urine, while hair and saliva can also be sampled using a minimally invasive procedure. In contrast, blood sampling is the most invasive method. No matter what kind of sampling method, it is crucial to the development of sample analysis and detection technology. This review details the progress of electrophoresis and electrochemical detection of diuretics in stimulants.

scholarly journals Thermochemical Ablation: A Device for a Novel Interventional Concept

2012 ◽  
Vol 6 (1) ◽  
Author(s):  
Matthew G. Geeslin ◽  
Erik N. Cressman
Keyword(s):  
Minimally Invasive ◽  
Exothermic Reaction ◽  
Invasive Procedure ◽  
Tumor Ablation ◽  
In Vivo Studies ◽  
Minimally Invasive Procedure ◽  
Chemical Reagents ◽  
Ablative Procedures

Solid focal and oligometastatic malignancies are appropriate targets for minimally invasive ablative procedures. Thermochemical ablation is an experimental minimally invasive procedure, which exploits certain features of current thermal and chemical tumor ablation therapies. Engineering principles have been used to design a device, which has been research-proven-capable of coagulating tissue through the combination of a thermal and chemical insult. This interventional device completes this assignment by separately guiding the flow of chemical reagents, drawn from auxiliary systems, to a point at the distal tip of an assembled apparatus. At this position, the respective flow-streams converge and undergo an exothermic reaction to produce a heated, hyperosmolar solute, which serves to ablate the targeted tissue. Ex and in vivo studies have confirmed the utility of this device and the physiologic toleration of this interventional concept.

scholarly journals Real-Time Expanded Field-of-View for Minimally Invasive Surgery Using Multi-Camera Visual Simultaneous Localization and Mapping

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2106
Author(s):  
Ahmed Afifi ◽  
Chisato Takada ◽  
Yuichiro Yoshimura ◽  
Toshiya Nakaguchi
Keyword(s):  
Minimally Invasive Surgery ◽  
Minimally Invasive ◽  
Real Time ◽  
Invasive Surgery ◽  
Simultaneous Localization And Mapping ◽  
Field Of View ◽  
Time Dynamic ◽  
Matrix Estimation ◽  
Localization And Mapping

Minimally invasive surgery is widely used because of its tremendous benefits to the patient. However, there are some challenges that surgeons face in this type of surgery, the most important of which is the narrow field of view. Therefore, we propose an approach to expand the field of view for minimally invasive surgery to enhance surgeons’ experience. It combines multiple views in real-time to produce a dynamic expanded view. The proposed approach extends the monocular Oriented features from an accelerated segment test and Rotated Binary robust independent elementary features—Simultaneous Localization And Mapping (ORB-SLAM) to work with a multi-camera setup. The ORB-SLAM’s three parallel threads, namely tracking, mapping and loop closing, are performed for each camera and new threads are added to calculate the relative cameras’ pose and to construct the expanded view. A new algorithm for estimating the optimal inter-camera correspondence matrix from a set of corresponding 3D map points is presented. This optimal transformation is then used to produce the final view. The proposed approach was evaluated using both human models and in vivo data. The evaluation results of the proposed correspondence matrix estimation algorithm prove its ability to reduce the error and to produce an accurate transformation. The results also show that when other approaches fail, the proposed approach can produce an expanded view. In this work, a real-time dynamic field-of-view expansion approach that can work in all situations regardless of images’ overlap is proposed. It outperforms the previous approaches and can also work at 21 fps.

S34 TENSION-FREE VAGINAL TAPE: ONE OF THE MINIMALLY INVASIVE PROCEDURE IN SUI

2010 ◽  
Vol 9 (6) ◽  
pp. 567
Author(s):  
X. Quni ◽  
I. Haxhiu ◽  
H. Aliu ◽  
N. Baftiu ◽  
M. Toska ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Invasive Procedure ◽  
Minimally Invasive Procedure ◽  
Tension Free ◽  
Tension Free Vaginal Tape

scholarly journals Common operation, uncommon complication. Bleeding from superior haemorrhoidal artery after minimally invasive procedure for hemorrhoids – a case report

2019 ◽  
Vol 39 (1) ◽  
pp. 70-73 ◽  
Author(s):  
Janavikula Sankaran Rajkumar ◽  
Aluru Jayakrishna Reddy ◽  
Ravikumar Radhakrishnan ◽  
Anirudh Rajkumar ◽  
Syed Akbar ◽  
...  
Keyword(s):  
Case Report ◽  
Minimally Invasive ◽  
Invasive Procedure ◽  
Minimally Invasive Procedure ◽  
Common Operation ◽  
Uncommon Complication

scholarly journals EMBOLIZATION OF RENAL ANGIOMYOLIPOMA: CASE SERIES

2015 ◽  
Vol 1 (2) ◽  
Author(s):  
Ghania Masood ◽  
Iffat Rehman ◽  
Saquib Khawar ◽  
Khurram A Mufti ◽  
Imran K. Niazi
Keyword(s):  
Minimally Invasive ◽  
Key Words ◽  
Case Series ◽  
Invasive Procedure ◽  
Standard Of Care ◽  
Renal Angiomyolipoma ◽  
Minimally Invasive Procedure ◽  
Benign Lesions ◽  
Current Standard ◽  
Spontaneous Haemorrhage

Renal angiomyolipomas (AML) are benign lesions usually left alone. However, lesions larger than 4 cm carry the risk of spontaneous haemorrhage and need treatment. Angiography and embolisation are the current standard of care particularly in patients with high operative risks. Angio-embolisation is a safe, minimally invasive procedure preserving maximum renal parenchyma, with the added advantage of preventing peri-procedural morbidity. Two cases of AML are presented in this case series. Key words: Angiomyolipoma, embolisation, renal 

Developing minimally invasive procedure quality metrics: one step at a time

2019 ◽  
Vol 33 (3) ◽  
pp. 679-683 ◽  
Author(s):  
Thomas A. Aloia ◽  
Timothy Jackson ◽  
Amir Ghaferi ◽  
Jonathan Dort ◽  
Erin Schwarz ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
Invasive Procedure ◽  
Quality Metrics ◽  
Minimally Invasive Procedure ◽  
One Step
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