DEVICE FOR SEALING POLYMER CONTAINERS FOR STORAGE OF BLOOD AND COMPONENTS THEREOF Russian patent published in 2016 - IPC A61J1/05 B29C65/04 

FIELD: welding.

SUBSTANCE: invention relates to high-frequency welding of polymer materials and can be used for sealing polymer containers used in medicine. Device for sealing polymer containers for storage of blood and components thereof comprises power supply source (1), connected through first electronic switch (2) to high-frequency generator (3), moving welding electrode (4) with drive (5), connected through second electronic switch (6) to power supply, fixed welding electrode (7), start-up unit (8), microprocessor control unit (9), current sensor (10) connected to output of generator (3), and first amplitude detector (11) connected between current sensor (10) and control unit (9). Control unit (9) is connected with start-up unit (8) and control inputs of electronic switches (2, 6). Device also includes coaxial transmission line (12), input of which through current sensor (10) is connected to output of high-frequency generator (3), and output through a matching unit (13) is connected to moving welding electrode (4) and second amplitude detector (14), whose input is connected to input of coaxial transmission line (12), and output - to control unit (9).

EFFECT: invention increases efficiency of sealing, reduces power consumption and reduces effect of high-frequency energy into fluid in tube of polymer container.

3 cl, 1 dwg