Half Suit Isolator for the Implementation of an Aseptic Process

An isolator used in the pharmaceutical industry should allow the operator to work in a fast, safe and ergonomic way. Conventional isolators inevitably have a limited operational area due to the gloves used to access the work area. In fact, in a conventional isolator, the operator is separated from the product except for the arms, which have room to manoeuvre within the sterile area using the gloves. In order to exploit the entire work area, the operator often has to put the gloves on and take them off inside the various flanges. Of course, this can slow down operator productivity.

At Comecer, we have been designing and manufacturing isolators for about 20 years and, each time, we try to redefine the process with our clients, so that it can be adapted to the integration requirements in the isolator. At times, however, the need to manoeuvre within the confined area requires the use of technologies such as half suits, well known since the dawn of isolation technology.

Half Suit Isolator Inside

And this was the case we were involved in developing a half suit isolator for the implementation of an aseptic process for a client of a major multinational company. In this case, the need for the operator to “enter” down to the waist in the sterile area, therefore having a much larger area for manoeuvre, also meant being able to handle greater loads than the load that could be handled just using the wrist on the isolators with gloves. The integration of this process, performed strictly in aseptic conditions, required the design and implementation of custom solutions for the specific instruments used and for the general configuration of the machine (material flow, product input and output, etc.).

The machine is designed to premix, inside a container, a fraction of powder together with WFI. The main operational stages include:

  1. Insertion into the work chamber of the containers filled with the active ingredient in powder form (4 units)
  2. Connection of the transfer lines to the work chamber (process air and WFI) and of the transfer line to the reactor (placed outside the isolator)
  3. Start of the decontamination cycle via VPHP generator
  4. Start of processing: filling of the drums with WFI, manual mixing, pressurised transfer to the reactor
  5. Repetition of the above-mentioned operations for the 4 previously loaded containers
  6. After the processing stage, the containers are removed from the inside of the work chamber in order to proceed with a new work cycle.

Here are some of the technical details of this isolator:

  • It works in positive pressure
  • It uses a laminar flow
  • It contains an integrated environmental monitoring system, both viable and non-viable.
  • It has been set up for future integration of RTP doors up to a maximum diameter of 350mm
  • It uses three doors for the transfer of liquids in aseptic conditions (SART system™)
  • It is equipped with an integrated VPHP generator
  • It has a 6-channel Yokogawa data logger for the acquisition of key data during processing stages (internal pressure, laminar flow speed, temperature, relative humidity, etc.).

Half Suit Isolator

The photo above shows the half suit isolator being built in our factory: if you are interested in these features, please contact us for more details (fill the form below).

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