emed systems

emed systems

Which system is right for me?

novelIsmaninger Straße 51

81675 Munich

Germany

novel964 Grand Ave

St. Paul, MN 5105

USA

www.novel.de

April 2002 novel emed systems novelgmbh © 2002

emed systems

• There are 2 basic emed systems – emed-at (clinic)– emed-st (clinic & research)

• The following slides will describe the hardware and software options of each system. At the end, a summary will be provided to compare the systems.


emed-at


emed-at system

• There are 2 main configurations for the emed-at system– emed-at 25

– emed-at 50

• Within these hardware systems, there are 4 different software options available– A, B, C, and D (each level builds on the previous level)


emed-at system overview

Hardware

emed-at 25 emed-at 50

Sensor area (mm) 360 x 190 360 x 190

Platform thickness (mm) 20 20

Sensor resolution (sensors/cm2) 2 2

Sampling frequency (Hz) 25 50

Connection serial port on PC serial port on PC

Operating systems Windows 95, 98, 98SE, 2000

Windows 95, 98, 98SE, 2000


emed-at system overview

SoftwareFeatures A B C D E

Dynamic and static measurement

X X X X X

Display of each frame in rollover process (ROP)

X X X X X

Maximum pressure picture (MPP)

X X X X X

Center of pressure display (COP)

X X X X

Vertical force-time curve X X X X X

Maximum pressure-time curve X X X X

Contact area-time curve X X X X

SoftwareFeatures A B C D E

Display of sensor value for each sensor

X X X X X

3D dynamic color display of ROP and MPP

X X

1:1 print out of pressure picture X X X

Screen Copy X X X X X

Storage of data X X X X X

Clinical Report X

Database DB light X X X X


emed-at software overview

• The following slides will give a brief overview of the emed-at software screens.

• Note: refer to previous chart for features available in each software package


Data Acquisition

This screen shows the data collection software – just after data have been collected. The pressure picture with gait line (center of pressure) is shown on the left and the pressure, force, and area-time curves are shown on the right.


Data Acquisition

The icons along the top of the window allow the file to be played dynamically or frame by frame. There are fields to enter subject name and comments.


Data Acquisition

It is possible to view the pressure, force, and area-time information as line or bar graphs by selecting the corresponding button.


This software also allows you to view the actual pressure value of each sensor. You can zoom in to better display the numbers. This is a picture of frame 33 zoomed in on the first metatarsal head and great toe. Also notice the white dot on the gait line represents the center of pressure for that frame.

Data Acquisition


Data Acquisition

Select the 3D icon to view the data as a 3D pressure map.


Database Software

This screen shows the db-light software. Patient information (top) can be stored along with data files (bottom left) and additional comments (bottom right).


Database SoftwareTo make data collection and storage easy, the patient information can first be entered and then the emed-at software can be started directly from the database. This will allow the data to be directly linked to the patient. No further organizational work is necessary! Simply select the patient name, click on the start application icon. Then select the program you want to start (emed). The emed-at program will start. Once the data are collected, the file will be saved and linked to the database.


emed-st


emed-st system

• All emed-st systems have the same software and electronic box

• There is a choice between 2 different platforms– emed-st 2

– emed-st 4

• The electronic box is used for signal processing and synchronisation with other systems

• The following screens will describe the different platforms and software features that build on the emed-at software


emed-st system overview

Hardware

emed-st 2 emed-st 4

Sensor area (mm) 438 x 226 360 x 190

Platform thickness (mm) 20 20

Sensor resolution (sensors/cm2) 2 4

Sampling frequency (Hz) 50 50

Connection parallel port on PC parallel port on PC


Windows 95, 98, 98SE, 2000


emed-st system overview

• Dynamic and static measurement

• Mode for automatic/manual storage of data files

• Integrated overview display for up to 10 measurements

• Display of each frame in rollover process (ROP)

• Vertical force-time curve

• Maximum pressure-time curve

• Contact area-time curve

• Maximum pressure picture (MPP)

• Center of pressure display (COP) 2D and 3D

• Display of sensor value for each sensor

• 3D dynamic color display of ROP and MPP

• 1:1 print out of pressure picture

• Screen Copy

• Database DB light


emed-st software overview

• The following slides will give a brief overview of the emed-st software screens

• All features previously shown in the emed-at software are available in the emed-st software

• The following slides will show ADDITIONAL features


Data AcquisitionThis screen shows the data collection software – just after several data files have been collected. The pressure picture with gait line (center of pressure) is shown on the left and the pressure, force, and area-time curves are shown in the middle. MPP pictures of each data file are shown on the right. Simply click on the thumbnail picture to view the corresponding file.


Data Acquisition

Select the 3D icon to view the data as a 3D pressure map. The COP is superimposed over the 3D picture. Use the navigation icons to play through the file in the 3D view.


Data Acquisition

Data files can be automatically saved by selecting the option ‘automatically save measured data’. This will speed the process of data collection.


Summary


System Comparison

Hardwareemed-at

25/50emed-st 2 emed-st 4

Sensor area (mm) 360 x 190 438 x 226 360 x 190

Platform thickness (mm) 20 20 20

Sensor resolution (sensors/cm2) 2 2 4

Sampling frequency (Hz) 25/50 50 50

Connection serial port on PC parallel port on PC parallel port on PC


Windows 95, 98, 98SE, 2000

Windows 95, 98, 98SE, 2000

Electronic box No Yes Yes

synchronisation No Yes Yes


System Comparison

Softwareemed-at

stFeatures A B C D E

Dynamic and static measurement

X X X X X X

Display of each frame in rollover process (ROP)

X X X X X X

Maximum pressure picture (MPP)

X X X X X X

Center of pressure display (COP)

X X X X X

Vertical force-time curve X X X X X X

Maximum pressure-time curve

X X X X X

Contact area-time curve X X X X X

COP displayed over 3D X

Softwareemed-at

stFeatures A B C D E

Integrated overview of measurements

X

Display of sensor value for each sensor

X X X X X X

3D dynamic color display of ROP and MPP

X X X X X

1:1 print out of pressure picture

X X X X

Screen Copy X X X X X

Data storage X X X X X X

Automatic data storage X

Database DB light X X X X X


references

• P. Brüggemann, U. Kersting. Erfassung der Druckverteilung unter dem Fuß. ORTHOPÄDIESCHUHTECHNIK 1997, July: 40-45

• M. Orlin, T. McPoil. Plantar pressure assessment. Physical Therapy 2000, 80(4):399-409

• B. Davis, R. Cothren, P. Quesada, S. Hanson, J. Perry. Frequency content of normal and diabetic plantar pressure profiles: implications for the selection of transducer sizes. Journal of Biomechanics 1996, 29(7):979-983

• M. Lord. Spatial resolution in plantar pressure measurement. Medical Engineering and Physics 1997, 19(2):140-144

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emed systems