scholarly journals Evaluating the histopathological and mechanical effects of a new forceps design: comparison of hemispheric bipolar forceps tip with usual bipolar tip on fresh cadaver cattle brain model

2021 ◽  
Vol 38 (4) ◽  
pp. 416-419
Author(s):  
Adnan ALTUN ◽  
Cengiz ÇOKLUK
Keyword(s):  
Experimental Study ◽  
Corpus Callosum ◽  
Brain Tissue ◽  
Dominant Hand ◽  
Operating Microscope ◽  
Bleeding Point ◽  
Surgical Interventions ◽  
Bipolar Cautery ◽  
Mechanical Effects ◽  
Fresh Cadaver

Without electrocautery, many modern surgical interventions are practically impossible. In neurosurgery, bipolar cautery forceps has been evolved to not only be an auxiliary, but as a principal instrument wielded by the dominant hand of the surgeon to navigate through the most delicate tissue that there is. The purpose of this study is to introduce our original bipolar forceps designed exclusively for microneurosurgical interventions and compare its feasibility with a standard bipolar forceps tip. This study has been conducted on two fresh cadaveric cow brains under the operating microscope. The coagulative and ablative effects of the hemispheric bipolar forceps tip (HBFT) have been histologically compared with those of the standard bipolar forceps tip (SBFT). Likewise, their efficacies as a dissection instruments have been compared via performing dissections from the parietal surface down to the corpus callosum. HBFT proved less traumatic to the uninvolved brain tissue during dissection. Also, histological analyses have revealed that ablative effects of the HBFT are more confined to the bleeding point, more effectively sparing the uninvolved brain tissue. Results of this experimental study suggest that HBFT is a better instrument to be used in microneurosurgical interventions, along with other surgical disciplines where selective diathermy is critical.

Experimental study on influence of splashing behavior on mechanical effects

2014 ◽  
Vol 26 (10) ◽  
pp. 101020 ◽  
Author(s):  
薛永泰 Xue Yongtai ◽  
窦志国 Dou Zhiguo ◽  
叶继飞 Ye Jifei ◽  
李南雷 Li Nanlei ◽  
张广兆 Zhang Guangzhao ◽  
...  
Keyword(s):  
Experimental Study ◽  
Mechanical Effects

A comprehensive experimental study on material properties of human brain tissue

2013 ◽  
Vol 46 (16) ◽  
pp. 2795-2801 ◽  
Author(s):  
Xin Jin ◽  
Feng Zhu ◽  
Haojie Mao ◽  
Ming Shen ◽  
King H. Yang
Keyword(s):  
Experimental Study ◽  
Human Brain ◽  
Brain Tissue ◽  
Material Properties ◽  
Human Brain Tissue

scholarly journals When classical music relaxes the brain: An experimental study using Ultrasound Brain Tissue Pulsatility Imaging

2020 ◽  
Vol 150 ◽  
pp. 29-36 ◽  
Author(s):  
Marta Andrea Siragusa ◽  
Bruno Brizard ◽  
Paul-Armand Dujardin ◽  
Jean-Pierre Réméniéras ◽  
Frédéric Patat ◽  
...  
Keyword(s):  
Experimental Study ◽  
Brain Tissue ◽  
Classical Music ◽  
The Brain

Dielectric properties of brain tissue at 1 GHz in acute ischemic stroke: Experimental study on swine

2016 ◽  
Vol 38 (2) ◽  
pp. 158-163 ◽  
Author(s):  
Serguei Semenov ◽  
Toan Huynh ◽  
Thomas Williams ◽  
Brian Nicholson ◽  
Anna Vasilenko
Keyword(s):  
Experimental Study ◽  
Ischemic Stroke ◽  
Dielectric Properties ◽  
Acute Ischemic Stroke ◽  
Brain Tissue

Anti-cancer drug diffusion within living rat brain tissue: an experimental study using [3H](6)-5-fluorouracil-loaded PLGA microspheres

2002 ◽  
Vol 53 (3) ◽  
pp. 293-299 ◽  
Author(s):  
Valérie-Gaëlle Roullin ◽  
Jean-Robert Deverre ◽  
Laurent Lemaire ◽  
François Hindré ◽  
Marie-Claire Venier-Julienne ◽  
...  
Keyword(s):  
Experimental Study ◽  
Rat Brain ◽  
Brain Tissue ◽  
Cancer Drug ◽  
Plga Microspheres ◽  
Drug Diffusion ◽  
Anti Cancer ◽  
Rat Brain Tissue

scholarly journals Experimental Study on the Mechanical Effects of the Vibration-Assisted Ball-Burnishing Process

2015 ◽  
Vol 30 (12) ◽  
pp. 1490-1497 ◽  
Author(s):  
J. A. Travieso-Rodriguez ◽  
G. Gómez Gras ◽  
J. Jorba Peiró ◽  
F. Carrillo ◽  
G. Dessein ◽  
...  
Keyword(s):  
Experimental Study ◽  
Ball Burnishing ◽  
Mechanical Effects ◽  
Burnishing Process

EXPERIMENTAL STUDY OF THE HISTOLOGIC FINDINGS OF THE NEOENDOTHELIALIZATION ACCORDING TO LENGTH OF POLYTETRAFLUOROETHYLENE

Hand Surgery ◽  
1998 ◽  
Vol 03 (02) ◽  
pp. 263-270
Author(s):  
Kwang Suk Lee ◽  
Ki Hoon Kang ◽  
Young Sik Kim
Keyword(s):  
Experimental Study ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Light Microscope ◽  
Carotid Arteries ◽  
Internal Diameter ◽  
Operating Microscope ◽  
Fibril Length ◽  
The Right ◽  
Scanning Electron

The purpose of this study was to investigate the patency rates and the histologic findings of neoendothelialization according to the length of implanted polytetrafluoroethylene (PTFE) with an internal diameter of 3 mm. Under the operating microscope, grafts of 8 and 24 mm in length were implanted in the right carotid arteries of rabbits. All implanted grafts were 25 μm in fibril length and 0.39 mm in wall thickness. All the grafts were harvested at different intervals and observed for the patency rates and histologic findings with light microscope and scanning electron microscope. There was no difference in patency rates according to the length of implanted PTFE. Histologically the formation of neointima and subintim was delayed and incomplete in longer implanted PTFE.

Piezosurgery prevents brain tissue damage: an experimental study on a new rat model

2011 ◽  
Vol 40 (8) ◽  
pp. 840-844 ◽  
Author(s):  
G. Pavlíková ◽  
R. Foltán ◽  
M. Burian ◽  
E. Horká ◽  
S. Adámek ◽  
...  
Keyword(s):  
Experimental Study ◽  
Brain Tissue ◽  
Rat Model ◽  
Tissue Damage ◽  
Brain Tissue Damage

Temperature gradient between brain tissue and arterial blood mirrors the flow-metabolism relationship in uninjured brain: an experimental study

2007 ◽  
Vol 51 (7) ◽  
pp. 872-879 ◽  
Author(s):  
J. Soukup ◽  
A. Rieger ◽  
C. Holz ◽  
I. Miko ◽  
N. Nemeth ◽  
...  
Keyword(s):  
Experimental Study ◽  
Temperature Gradient ◽  
Brain Tissue ◽  
Arterial Blood

Experimental study on tissue phantoms to understand the effect of injury and suturing on human skin mechanical properties

2016 ◽  
Vol 231 (1) ◽  
pp. 80-91 ◽  
Author(s):  
Arnab Chanda ◽  
Vinu Unnikrishnan ◽  
Zachary Flynn ◽  
Kim Lackey
Keyword(s):  
Experimental Study ◽  
Mechanical Behavior ◽  
Human Skin ◽  
Computational Models ◽  
Wound Closure ◽  
Mechanical Tests ◽  
Two Dimensional ◽  
Surgical Interventions ◽  
Tissue Phantom ◽  
Tissue Phantoms

Skin injuries are the most common type of injuries occurring in day-to-day life. A skin injury usually manifests itself in the form of a wound or a cut. While a shallow wound may heal by itself within a short time, deep wounds require surgical interventions such as suturing for timely healing. To date, suturing practices are based on a surgeon’s experience and may vary widely from one situation to another. Understanding the mechanics of wound closure and suturing of the skin is crucial to improve clinical suturing practices and also to plan automated robotic surgeries. In the literature, phenomenological two-dimensional computational skin models have been developed to study the mechanics of wound closure. Additionally, the effect of skin pre-stress (due to the natural tension of the skin) on wound closure mechanics has been studied. However, in most of these analyses, idealistic two-dimensional skin geometries, materials and loads have been assumed, which are far from reality, and would clearly generate inaccurate quantitative results. In this work, for the first time, a biofidelic human skin tissue phantom was developed using a two-part silicone material. A wound was created on the phantom material and sutures were placed to close the wound. Uniaxial mechanical tests were carried out on the phantom specimens to study the effect of varying wound size, quantity, suture and pre-stress on the mechanical behavior of human skin. Also, the average mechanical behavior of the human skin surrogate was characterized using hyperelastic material models, in the presence of a wound and sutures. To date, such a robust experimental study on the effect of injury and sutures on human skin mechanics has not been attempted. The results of this novel investigation will provide important guidelines for surgical planning and validation of results from computational models in the future.

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