Sharp Shape Foot Scanner - Instructions

Your scanner Sharp Shape comes with a power supply cable, foot pedal and a connector for the computer. The scanner can be adjusted for alignment to patient's foot.

 

The program is located en the main hard drive of your pc ( Drive C: )in a folder called scanfeet, in there is a folder "RAWFILE" and a folder "SCNFILE" where the files of the scanned foot are saved.

 

In the same folder is located the icon newscan that starts the program, also you can start the program from the program files in your pc and from the shortcut in your desktop.

 

 

 

When the program starts you will see a screen and the available options.

Raw File, SCN File- Indicates the type of file being used.
MM, INCH - Indicates the measurements system used when working in RAW mode.
File Name - Name of file in use

Write File - Save changes
Load File - Allow to review/change files

Scan - Begins the scan using the foot scanner.
Settings - Select the port for communications with the scanner and speed.
Help - Basic Instructions to operate the scanner.
Print Screen - will print on paper the image of the scan.
Quit - Exits the program.

By clicking on Scan a new window will open up with instructions  to begin and finishing the scan

The scan should be made with the scanner in the upright position as shown below. The height of the patient chair has to be suitable. Press the foot pedal when ready. Although a dark room is not required, the darker toe room, the better the image. The doctor must wear black gloves.

When the scan is made, the foot being scanned has to be placed above the label  “Put foot above this line”, where you should set the heel. You will see a missing heel on the image if the foot is set too low. You will see a missing forefoot on the image if the foot is set too high.

 

 

The orientation of the foot being scanned should line up with the centerline of the scanner.

To do that, you can manipulate the foot or the scanner body.

Among the three images shown, the middle on is the best image. The tilt of the image on the left and on the right is too much, which creates some difficulties for the cast correction.

To improve the image, you can do the following:

Before scan, you want to leave the foot out of socks for a while, so the foot can get dry a little bit. That will help to reduce the smudges on the scanner glass. Do not use any chemical, such as Thinner, to clean the Plexiglas. Use dry/wet cloth with soap only.


Some have tried using a one-time use lady’s sock (nylon, light color) for the scan. Although the arch may change a bit, it is a good idea to improve the image.

Scanning is done and a foot image is in 3D view and in a gray scale.

The screen after the scan is like he one shown. Check the integrity of the image. Make a re-scan if the image doesn’t look good. We have two data formats. One is RAW and the other is SCN. The RAW file has been used in the AOMS systems for producing molds and orthotics for years. The SCN is a new file format, which carries more info than the RAW does. So far we haven’t been able to fully utilize the SCN file yet, except for plotting the image. We may use them in the future. You can save the SCN file to the hard disk by click on “WRITE FILE”. If you want to have the molds or orhotics made from the AOMS, you only need the RAW files.

 

 

To prepare a RAW image, crop the useful area of the foot and eliminate the noise. To do that, use the mouse to click the center (red dot), or the upper-left hand corner or the lower-right hand corner of the rectangle. You can move the rectangle by clicking and dragging the red dot. You can change the rectangle size by clicking and dragging the two corners. Note that the length of the rectangle is limited to 10 inched. You want to catch the heel and 10 inches above the heel.

The orthotics are made below the metatarsal heads. 10 inches should cover almost all of the devices that you want to make. Because of the 10-inch limit, sometimes you have to shorten one side before you stretch the other one. To drag a point is to click on that point and hold the mouse button (don’t release it) until you move the cursor to a desired location.

A more precise crop is selecting Crop #1,  when done click on Write File, this will save it in SCN File and then is ready to select RAW File

 

After you have worked with the SCN image, click the toggle switch RAW File.This is the RAW image

 For milling molds or orthotics, you want to locate the seven landmark dots as shown. These red dots will provide references for the cast correction software for the width, length of device. Click on the red dots and drag them to the suitable places. The outer two dots on the forefoot define the width of the forefoot and the inner two dots on the forefoot define the locations of the 1st and 5th metatarsal heads.

 

Use common sense to locate them. Also locate the three dots on the heel to suitable locations. The measurements are shown on the screen. After you are done, click on “WRITE FILE” to write the RAW file.

 


The dotted lines on the foot gray scale and on the 3D image block are simulated to  represent a close idea of the size for the orthotic Shell (Plates).

 

This is a standard size for a metatarsal Shell.

 

 

 

 

 

 

 

 

The dotted lines on the foot gray scale and on the 3D image block are simulated to  represent a close idea of the size for a sulcus orthotic Shell (Plates).

 

This is for a sulcus size some times used on devices such EVA/Porozote and Cork&Leather.

 

 

 

 

 

Also you can see the heel and forefoot relation  in a 3D image , just click on View3D and a new window will open. All the options are available when the letter H is pressed.

Also SCN files and RAW files can be load up for review and/or changes, just click on Load. This files can be saved in floppy disk, Send this files to our laboratory and the orthosis will be done using the AOMS system.

Just click on Load, select the type of file and open the file that you wish to work

TROUBLE SHOOTING


If you don’t see any image after you have made a scan, please check the following:


 - The computer COM port should be in working condition.
 - The cable needs to be well seated on both ends.
 - The port setting should match the port assignment on the computer. Most computers have COM1 and COM2. If your COM2 has the 25-pin port, you need to find an adapter (from 25-pin to 9-pin)
 - The baud rate setting should match the setting on the scanner.
 - Start a scan and watch the LED’s inside the scanner. The 2nd LED should blink for at least 3 seconds, and the 3rd LED should blink for at least 4 seconds (depending on the communication speed) after the foot pedal is pressed. If it doesn’t blink, something is wrong with the hardware inside. Contact us for further actions.

If you see a bad image (snowy, distorted or noisy), after a scan is made, please check the following:

 - You need to wait for the finish of a scan before you take another scan (press the foot pedal). All the LED’s do not blink when the scan is finished.
 - The baud rate setting should match the setting on the scanner.
 - Shield unwanted light, especially direct light rays, to reduce the noise.
 - The configuration file and the scanner should match. You can’t use the same configuration files on separate scanners. To check for a match, look for matching serial numbers on the screen of the software and inside of the scanner.

NOTE: The laser diodes used in the scanner are class II. They are the same as the ones used in stores. Do not stare into them for longer time than they pass through your eyes.

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