DESCRIPTION
The thawer line has been developed thanks to partnership work, in which KW involved diff erent skills, right from the start of the project: from clinical and medical competence to industrial and scientifi c research, combining them with its thorough manufacturing know-how.
And it has been patented by KW.
W-PFD (or W-SCFD) is a completely innovative machine, both from the point of view of the choice of materials and in the way it works.
In fact, using this thawer it is possible to trace every step of the process; by reading the bar code or other forms of identifi cation, the machine can recognise the operator, the type of bag and then from the bag trace the donor.
Through the electronic control unit with touch screen it is possible to transfer the information in the user’s local network or fi le all the defrosting plan data on SD cards.
Unlike other appliances on the market, which only measure the temperature of the bath, the KW thawer, which has several sensors in each pocket, continuously keeps the temperature of each bag under control, ensuring:
• Total traceability of everything that has occurred during defrosting.
• Validation of the entire defrosting process.
• Perfect homogeneity of the plasma defrosted with Hydro_pump_massage® i.e. the machine can subject the bag to a hydromassage treatment, so that at the end of defrosting the plasma is homogenised reaching a better quality.
• Asynchronous defrosting of several units of fresh frozen plasma or of several units of stem cells; the thawer is fi tted with diff erent independent heating units, so it is possible to activate the heating processes asynchronously and in a fully independent way.
• No stoppage of laboratory activity, except for exceptional events. Should any problems arise in a defrosting pocket, or if a bag breaks, the contents would in any case remain inside the pocket without contaminating the heating fl uid. The pocket can easily be removed, washed under running water and then refi tted without stopping the heating process of the other pockets.
• High machine productivity due to all the reasons mentioned above.
The W-PFD, W-SCFD line is a veritable challenge to common sense in terms of size, structure and information available.
The KW fast defrosting system for plasma and stem cells represents the new point of reference for the user interface and for the functions of medical equipment, where a high visual impact is combined with sophisticated management of the bag preparation unit.
Functions
Thus system has up to three diff erent defrosting pockets, each fi tted with two temperature sensors, which allow the corresponding cycles for the preparation of blood bags to infusion temperature to be carried out simultaneously.
The following operating parameters can be defi ned for each pocket:
• End of cycle temperature
• End of cycle time
• Bag mode
• Plasma mode
• Cell stem mode
• WARMER MODE
WARMER MODE for warming of blood, blood products and infusion solutions
Therefore each cycle can be controlled in temperature (when it is reached, the cycle ends automatically) and in any case within the set time limit, or by time.
Each of these processes are constantly monitored and recorded with the possibility of tracing the defrosting curve on the screen throughout the cycle time.
Every single defrosting cycle is stored in the memory to allow the historic retrieval of the various cycles according to the date, bag, addressee and the user who has performed the actual cycle.
Also all the operating variables are monitored in real time. At any non-conformity event, the screen shows an alarm warning. Therefore, the user can view the detail of the alarm in progress and decide the corrective action to be taken. Clearly, the system also stores the cycles interrupted due to an alarm.
A sensor warns the operator of breakage of the bag. The end of a bag preparation cycle is indicated on the screen, the pocket door is released and the user can take out the bag ready for use
Cycle recording/identification
The thawer stores the cycle operating data once a minute on an SD Card.
Through an optional bar code every cycle can be allocated the identifi cation of the bag, operator, etc.
These can be viewed in graphic and table form on the display itself or transferred to a PC via USB pen drive for further processing.
Or the appliance can be included in the user LAN via Ethernet port (also Wi-Fi)
Access control
Each user can be associated with a password that allows access to one or more system functions:
• Cycle start
• Operating parameter setting
• Mode choose
• Date/time setting
• Turning off
• Etc...
A dedicated window shows the cycles performed on the day selected for every user.
New features compared with state of the art
• The plasma bag does not directly contact the thermostatic bath, therefore it remains completely dry and protected against contamination.
• The pocket material is guaranteed to remain intact even after repeated insertions of the frozen bag, which might have cutting edges.
• The temperature sensors inside the pocket allow recording the trend of the heating process for each bag.
• The machine version with three trays allows the fully independent and asynchronous activation of 3 heating processes.
• Alarm in the case of plasma bag breakage.
• The temperature of the thermostatic bath can be higher than the fi nal temperature required for the plasma bag, as the temperature sensors in contact with the bag indicate that heating has taken place to the set temperature and the control system interrupts the process emptying the tray in just seconds.
This way the process time can be reduced.
• It is possible to activate the function for massaging the bag and homogenising the plasma by quickly filling and emptying the operating tray of the individual defrosting pocket.
• Simple to use:
There is no need to indicate the defrosting time in relation to the bag size, as the machine interrupts the process when the required temperature is reached.
• The user can see the surface temperature reached by the bag in real time on the display.
• The whole process is recorded automatically.
• Total connectivity.
• Simple to clean:
If the bag is broken the contents remain inside the pocket without contaminating the thermostatic bath; the pocket can easily be removed, washed under running water and then refi tted.
The bath water is treated with sterilising substances according to the maintenance procedures.
