Vante SEBRA 2605, Operation Manual

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P/N VT-108732-US, Manual revision: C
2-1
P
RODUCT
O
VERVIEW
The Vante ® SEBRA ® Model 2605 Segmenting Head ("the Sealing Head") is part
of a system that employs radio frequency (RF) to make uniform, quality seals
on blood bags, transfer sets and IV tubing. A Vante SEBRA Model 2600 RF
Power Source provides RF power to the Sealing Head and controls RF power
and sealing time. The manually activated Sealing Head forms a seal with its jaws
in such a way as to make segment separation easy and uniform. The Sealing
Head is equipped with a splash guard for operator protection from
inadvertent contact with blood and/or blood products in the unlikely event of
tubing rupture
Application
The Model 2605 Segmenting Head is part of a system and cannot be used
independently. When used in conjunction with the Model 2600 RF Power
Source, it is the instrument used to make seals on tubing or bags made of RF
reactive thermoplastic materials typically used in blood banks, blood processing
facilities and transfusion centers. Tubing or bags utilized in the collection and
handling of blood and blood products is typically made from thermoplastic vinyl,
namely polyvinylchloride, (PVC) or ethylene vinyl acetate (EVA), and it is this
application for which this product is specifically intended.
T
HEORY OF
O
PERATION
The physical properties of PVC plastic tubing (and other RF-reactive thermo-
plastic materials) cause it to dielectrically heat at a molecular level in the
presence of RF energy. This energy causes the plastic to soften due to the friction
of the vibrating molecules. In this softened condition, the plastic becomes
weldable because the molecules are free to intermingle under the application of
external forces, such as compression. If allowed to cool while the forces are
applied, the material will be permanently reshaped.
The Sealing Head receives a controlled amount of RF energy from the Power
Source while mechanically compressing the tubing across its diameter during the
dielectric sealing and forming process. When the energy is removed, and the
tubing is allowed to cool under compression, a permanent seal is produced.
Chapter 2