Design of MRI compatible biopsy needle capable of force measurement

ABSTRACT: This article focuses on steel cord deformation and force investigation within heavy-duty radial tires. Typical bending deformation and tension force distributions of steel reinforcement within a truck bus radial (TBR) tire have been obtained, and they provide useful input for the local scale modeling of the steel cord. The three-dimensional carpet plots of the cord force distribution within a TBR tire are presented. The carcass-bending curvature is derived from the deformation of the carcass center line. A high-efficiency modeling approach for layered multistrand cord structures has been developed that uses cord design variables such as lay angle, lay length, and radius of the strand center line as input. Several types of steel cord have been modeled using the developed method as an example. The pure tension for two cords and the combined tension bending under various loading conditions relevant to tire deformation have been simulated by a finite element analysis (FEA). Good agreement has been found between experimental and FEA-determined tension force-displacement curves, and the characteristic structural and plastic deformation phases have been revealed by the FE simulation. Furthermore, some interesting local stress and deformation patterns under combined tension and bending are found that have not been previously reported. In addition, an experimental cord force measurement approach is included in this article.

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Aerodynamic parameter measurement using the wind driven manipulator - Inverse force measurement on wings

10.2514/6.1997-2220 ◽

1997 ◽

Cited By ~ 1

Author(s):

Richard Ames ◽

N. Komerath ◽

J. Magill ◽

N. Komerath ◽

...

Keyword(s):

Force Measurement ◽

Parameter Measurement ◽

Aerodynamic Parameter ◽

Inverse Force

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Endoscopic ultrasound-guided tissue sampling with a new 20G biopsy needle for the characterization of gastrointestinal subepithelial lesions

10.26226/morressier.59a6b343d462b80290b54290 ◽

2017 ◽

Author(s):

Filippo Antonini

Keyword(s):

Endoscopic Ultrasound ◽

Tissue Sampling ◽

Ultrasound Guided ◽

Biopsy Needle ◽

Subepithelial Lesions

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Rotational phantom for evaluating MR biopsy needle artifacts.

American Journal of Roentgenology ◽

10.2214/ajr.168.5.9129456 ◽

1997 ◽

Vol 168 (5) ◽

pp. 1383-1384 ◽

Cited By ~ 1

Author(s):

C J Hor ◽

F J Katterbach

Keyword(s):

Biopsy Needle

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VirtualCPR: Virtual Reality Mobile Application for Training in Cardiopulmonary Resuscitation Techniques

Sensors ◽

10.3390/s21072504 ◽

2021 ◽

Vol 21 (7) ◽

pp. 2504

Author(s):

Francisco Javier García Fierros ◽

Jesús Jaime Moreno Escobar ◽

Gabriel Sepúlveda Cervantes ◽

Oswaldo Morales Matamoros ◽

Ricardo Tejeida Padilla

Keyword(s):

Virtual Reality ◽

Cardiopulmonary Resuscitation ◽

Mobile Application ◽

Force Measurement ◽

Heart Diseases ◽

Medical Knowledge ◽

Public Health Problem ◽

Force Sensor ◽

Previous Training ◽

Color Indicator

Deaths due to heart diseases are a leading cause of death in Mexico. Cardiovascular diseases are considered a public health problem because they produce cardiorespiratory arrests. During an arrest, cardiac and/or respiratory activity stops. A cardiorespiratory arrest is rapidly fatal without a quick and efficient intervention. As a response to this problem, the VirtualCPR system was designed in the present work. VirtualCPR is a mobile virtual reality application to support learning and practicing of basic techniques of cardiopulmonary resuscitation (CPR) for experts or non-experts in CPR. VirtualCPR implements an interactive virtual scenario with the user, which is visible by means of employment of virtual reality lenses. User’s interactions, with our proposal, are by a portable force sensor for integration with training mannequins, whose development is based on an application for the Android platform. Furthermore, this proposal integrates medical knowledge in first aid, related to the basic CPR for adults using only the hands, as well as technological knowledge, related to development of simulations on a mobile virtual reality platform by three main processes: (i) force measurement and conversion, (ii) data transmission and (iii) simulation of a virtual scenario. An experiment by means of a multifactorial analysis of variance was designed considering four factors for a CPR session: (i) previous training in CPR, (ii) frequency of compressions, (iii) presence of auditory suggestions and (iv) presence of color indicator. Our findings point out that the more previous training in CPR a user of the VirtualCPR system has, the greater the percentage of correct compressions obtained from a virtual CPR session. Setting the rate to 100 or 150 compressions per minute, turning on or off the auditory suggestions and turning the color indicator on or off during the session have no significant effect on the results obtained by the user.

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