High Throuput Fluidic PCBs for Medical Devices

2011 ◽  
Vol 2011 (DPC) ◽  
pp. 000539-000554
Author(s):  
Stefan Gassmann ◽  
Lienhard Pagel
Keyword(s):  
Medical Devices ◽  
Printed Circuit Boards ◽  
Research Area ◽  
Minimal Invasive ◽  
Low Flow ◽  
Electronic Systems ◽  
Circuit Boards ◽  
Fluidic Devices ◽  
Conventional Technology ◽  
New Research

Printed circuit boards (PCBs) perform normally wiring, holding and cooling tasks in electronic systems. But with the request for integration of more and more functionality in the devices the PCBs have to take over more and more tasks in a system and will become a functional device and not only the carrier for electronic devices. One of these functions can be fluidics. The usage of PCBs for micro fluidic devices such as pumps and sensors was already reported. In this talk a new research area of the fluidic PCB group at the University of Rostock is presented: The usage of a fluidic PCB technology for the realization of medical fluidic devices with high throughput. The problems to overcome are the creation of high pressure proof channels with a low flow resistance and of course the biocompatibility. In the talk a medical device developed in such a technology will be described. It is a support device for the minimal invasive surgery which has to regulate the pressure in the pneumoperitonaeum, a so called insufflator. For this device flow rates of up to 45l/min CO2 has to deliver and the channel must withstand a pressure of up to 3.5 Bar. The focus in the talk will be the technological challenge of building pressure proof channels in the PCB. The requirements for the usage in medical devices will be explicitly described and the measurement results will be demonstrated. As a conclusion a comparison to a device build in a conventional technology device is given. The criterias are the functional parameters and the production and maintainance costs.

Fluidic Devices in PCB Technology

2010 ◽  
Vol 2010 (DPC) ◽  
pp. 000557-000578
Author(s):  
Mathias Nowottnick ◽  
Lienhard Pagel ◽  
Stefan Gassmann
Keyword(s):  
Printed Circuit Boards ◽  
Low Cost ◽  
High Flow ◽  
Low Flow ◽  
Circuit Boards ◽  
Static Mixers ◽  
Fluidic Devices ◽  
Micro Systems ◽  
The University ◽  
Flow Devices

Printed circuit boards (PCB) are widely used in electronics. They have the wiring and holding task for electronic devices. With the adding of more and more functionality to miniaturized devices the PCBs have to include more and more functionality. However, the usage of PCBs in fluidic applications is rare. Adding a fluidic functionality to a PCB will create intelligent fluidic systems at low cost. At the University of Rostock a special technology for creating fluidic systems in PCBs is developed. Low-Flow micro systems as well as High-Flow systems are feasible. The main advantage using PCBs is to create compact devices at low cost. In this paper an overview is given over the devices made at the University of Rostock. This description include low flow devices like a thermopneumatical driven pump, a bimetal valve, a pressure sensor with force compensation, a bubble detector and static mixers. As well as a high flow device, the insufflator. The insufflator is a medical device where a flow rate of up to 45l/min has to be realized. This is a very good example for the high flow fluidic PCB technology where normal multi layer PCBs are used to hold the channels inside the PCB and connect pneumatic components electrically and pneumatically on the same substrate. A short introduction to both technologies is given and the function of the devices is explained.

An Educational Scheme for a CNC Drilling Machine

2012 ◽  
Vol 2 (2) ◽  
pp. 1-11 ◽  
Author(s):  
Salah Haridy ◽  
Zhang Wu ◽  
Amro Shafik
Keyword(s):  
Printed Circuit Boards ◽  
Numerical Data ◽  
Numerical Control ◽  
Electronic Systems ◽  
Parallel Port ◽  
Circuit Boards ◽  
Cnc Machine ◽  
Printed Circuit ◽  
Stepper Motors ◽  
C Program

Computer numerical control (CNC) involves machines controlled by electronic systems designed to accept numerical data and other instructions, usually in a coded form. CNC machines are more productive than conventional equipment and consequently produce parts at less cost and higher accuracy even when the higher investment is considered. This article proposes an educational scheme for designing a CNC machine for drilling printed circuit boards (PCB) holes with small diameters. The machine consists of three-independently move-fully controlled tables. Output pulses from the personal computer (PC) parallel port are used to control the machine after processing by an interface card. A flexible, responsive and real-time visual C # program is developed to control the motion of the stepper motors. The educational scheme proposed in this article can provide engineers and students in academic institutions with a simple foundation to efficiently build a CNC machine based on the available resources.

Rapid Co-Design of Electro-Mechanical Specifications for Robotic Systems

2015 ◽  
Author(s):  
Nicola Bezzo ◽  
Peter Gebhard ◽  
Insup Lee ◽  
Matthew Piccoli ◽  
Vijay Kumar ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Robotic Systems ◽  
Electronic Systems ◽  
Graphical Interface ◽  
Circuit Boards ◽  
Design Environment ◽  
Printed Circuit ◽  
Control Behavior ◽  
Final Output ◽  
3D Printers

Recent advances in design, fabrication, and programming technologies enable the rapid digital manufacturing of functional robotic systems. Novices can quickly fabricate mechanical frames thanks to 3D printers and cut-and-fold techniques and quickly program the control behavior of a robot using modern software environments. However, there is still not a systematic way to design custom printed circuit boards (PCB). In this work, we propose a hierarchical approach that allows casual users to quickly and easily create PCBs. A drag-and-drop graphical interface allows users to intuitively assemble PCBs from a library of predesigned, parameterized components, and a script-based infrastructure automatically composes all of the electronic systems based on user inputs. The final output is a fabrication-ready electronic design. Within this framework, we also propose a verification analysis that allows the user to quickly check that the developed design conforms to electrical constraints like voltage, current, and power limitations. Finally, we validate the proposed co-design environment with experimental results through the realization of a teleoperated segway robot.

A New Methodology to Protect PCBs from Nondestructive Reverse Engineering

2016 ◽  
Author(s):  
Zimu Guo ◽  
Bicky Shakya ◽  
Haoting Shen ◽  
Swarup Bhunia ◽  
Navid Asadizanjani ◽  
...  
Keyword(s):  
Reverse Engineering ◽  
Printed Circuit Boards ◽  
Advanced Characterization ◽  
Electronic Systems ◽  
Circuit Boards ◽  
X Ray ◽  
Reverse Engineer ◽  
Electronic Hardware ◽  
Non Destructive ◽  
Destructive Methods

Abstract Reverse engineering of electronic hardware has been performed for decades for two broad purposes: (1) honest and legal means for failure analysis and trust verification; and (2) dishonest and illegal means of cloning, counterfeiting, and development of attacks on hardware to gain competitive edge in a market. Destructive methods have been typically considered most effective to reverse engineer Printed Circuit Boards (PCBs) – a platform used in nearly all electronic systems to mechanically support and electrically connect all hardware components. However, the advent of advanced characterization and imaging tools such as X-ray tomography has shifted the reverse engineering of electronics toward non-destructive methods. These methods considerably lower the associated time and cost to reverse engineer a complex multi-layer PCB. In this paper, we introduce a new anti–reverse engineering method to protect PCBs from non-destructive reverse engineering. We add high-Z materials inside PCBs and develop advanced layout algorithms, which create inevitable imaging artifacts during tomography, thereby making it practically infeasible for an adversary to extract correct design information with X-ray tomography.

Predictive Modeling of the Dynamic Response of Electronic Systems to Shocks and Vibrations

2010 ◽  
Vol 63 (5) ◽  
Author(s):  
E. Suhir
Keyword(s):  
Dynamic Response ◽  
Predictive Modeling ◽  
Printed Circuit Boards ◽  
Nonlinear Behavior ◽  
Electronic Systems ◽  
Circuit Boards ◽  
Element Analysis ◽  
Portable Electronics ◽  
Flexible Printed Circuit ◽  
Board Level

The published work on analytical (“mathematical”) and computer-aided, primarily finite-element-analysis based, predictive modeling of the dynamic response of electronic systems to shocks and vibrations is reviewed. Understanding the physics and the ability to predict the response of an electronic structure to dynamic loading has been always of significant importance in military, avionic, aeronautic, automotive, and maritime electronics. For the past decade, this problem has become important also in commercial, and, particularly, in portable, electronics in connection with accelerated testing on the board level of various surface-mount technology systems. The emphasis of this review is on the nonlinear behavior of flexible printed circuit boards experiencing shock loading applied to their support contours.

STRUCTURAL DYNAMICS OF ELECTRONIC SYSTEMS

2013 ◽  
Vol 27 (07) ◽  
pp. 1330004 ◽  
Author(s):  
E. SUHIR
Keyword(s):  
Dynamic Response ◽  
Printed Circuit Boards ◽  
Impact Load ◽  
Electronic Systems ◽  
Circuit Boards ◽  
Element Analysis ◽  
Highly Nonlinear ◽  
Flexible Printed Circuit ◽  
Nonlinear Shock ◽  
Drop Tests

The published work on analytical ("mathematical") and computer-aided, primarily finite-element-analysis (FEA) based, predictive modeling of the dynamic response of electronic systems to shocks and vibrations is reviewed. While understanding the physics of and the ability to predict the response of an electronic structure to dynamic loading has been always of significant importance in military, avionic, aeronautic, automotive and maritime electronics, during the last decade this problem has become especially important also in commercial, and, particularly, in portable electronics in connection with accelerated testing of various surface mount technology (SMT) systems on the board level. The emphasis of the review is on the nonlinear shock-excited vibrations of flexible printed circuit boards (PCBs) experiencing shock loading applied to their support contours during drop tests. At the end of the review we provide, as a suitable and useful illustration, the exact solution to a highly nonlinear problem of the dynamic response of a "flexible-and-heavy" PCB to an impact load applied to its support contour during drop testing.

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