Laser System for Biological Tissue Thickness Measurement and Cutting.
pericardial tissue for making prostheses
Thickness measurement error, mm
Scan area size
determined by the model of the laser cutting machine
Scan speed, up to, mm/s
three-phase ac network with frequency (50±1) Hz, rated
voltage 220/380 v with voltage tolerance ±10%
Template file format
2D laser scanner
Operating frequency, profiles/s
The structural scheme of the system is shown in Figure 1. The system is
implemented on the basis of a CNC laser cutting machine with a Ruida controller or
similar. The machine is controlled via a central computer using specialized software. The 2D laser scanner is mounted on the movement system of the machine. In the
measurement mode, the CNC system of the machine moves the sensor line by line
(snake) over the material. The sensor measures the distance (Z coordinate) to the
surface of the material.
Data pickup from the sensor is synchronized with its movement
(XY coordinates) and the result is transmitted to the computer via the Ethernet port. The
software creates a material height map.
Figure 1 - Structural scheme
The operation of the system includes the following stages:
1 - Calibration. At this stage, the system scans the surface of the object plate and
generates a height map in the scanner coordinate system.
2 - Measurement of the biomaterial thickness and formation of its height map. At
this stage, the system scans the surface of the biomaterial placed on the object plate. The thickness of the biomaterial is calculated as the difference between the heights of
surface of the biomaterial and the object plate.
3 - Programmatic placement of patterns selected from the database on the height
map of the biomaterial.
4 - Laser cutting of the biomaterial in accordance with the location of the patterns.
Laser System for Biological Tissue Thickness Measurement and Cutting. Demo-video.