FOCUS 3000

Clean Air Operating Theatre Ventilation System

Focus 3000 (Bulkhead Style) Features

• Modular construction
• Unique design to deliver ultra clean air over the operating table downwards and outwards
• Minipleat HEPA / ULPA filters
• Gel filter seal
• Perforated stainless steel diffuser
• Central duct for operating table light stem
• Optional perimeter lighting (including LED)
• Bulkhead style
• Gasket seal option available
• Low profile / customisable options available

Description

In the pursuit of reducing air borne bacteria in operating theatres, the Focus 3000 Clean Air Operating Theatre Ventilation System by Airepure® Australia provides a controlled distribution of biologically clean air at the operating table, while reducing the risk of contamination from outside the clean zone. Designed to be constructed in a modular form, the Focus 3000 unit enables installation into existing operating theatre facilites.

Typical applications include orthopaedic and neuro operating theatres where deep wound surgery is carried out and there is a high risk of hospital acquired infection via air bourne routes.

General

Airepure operating theatre ventilation systems are designed to comply with the Australian Council on Health Care Standards (ACHS) guidelines for the air flow and velocity and at the operating table level and the performance requirements of the Health Technical Memorandum (HTM) 03 with respect to supply air velocity and distribution below the diffuser. These systems are of a proven design where the air distribution profile has been demonstrated by CFD modelling and validated by a full size installation.

Design Characteristics

The following design characteristics are standard of the Focus 3000 Clean Air Operating Theatre Ventilation System:

• Modular construction.
• Minipleat high capacity low pressure loss HEPA filters (99.99% min efficiency on 0.3μm particles).
• Gel filter sealing.
• Perforated stainless steel diffuser engineered to achieve the required air flow distribution.
• Central duct for operating theatre light stem.

Optional Design Characteristics

The following design characteristics are optional for the Focus 3000 Clean Air Operating Theatre Ventilation System:

• 120mm HC Minipleat HEPA filters.
• ULPA filters (99.9995% min efficiency on 0.3μm particles).
• Integrated perimeter lighting (including COI Compliant* LED).
• Integrated return air grilles.
• Customised design can be implemented for specific project work.
• Differential pressure gauge for HEPA filter condition monitoring.

*Complies with the Cyanosis Observation Index (COI), meeting the requirements of AS/NZS 1680.2.5:1997 for examination lighting.

Air Quality and Distribution

The following minimum standards apply to the Focus 3000 Clean Air Operating Theatre Ventilation System:

• A maximum of 0.5 bacteria-carrying particles per cubic metre of air issuing from the final filters.
• Less than 10 bacteria-carrying particles per cubic metre of air within 300mm of the wound site.
• Less than 20 bacteria-carrying particles per cubic metre of air in the 2.8m x 2.8m working area at table height (contamination of instruments and material within the sterile field will lead to wound contamination).
• The system provides a controlled distribution of ultra clean air vertically downward and outwards.
• The airflow rate average velocity figures is designed to comply with the ACHS and HTM guidelines.

Air Movement

The CFD modelling diagrams shows the uniform controlled air movement acheived through the Focus 3000 Clean Air Operating Theatre Ventilation System. The various shading of air flow depicted in this CFD modelling shows the face velocity at the ceiling diffuser with controlled uniforn velocity providing a clean air distribution pattern across thye 2800 x 2800mm clean zone.

The Focus 3000 arrangement is designed to incorporate high level (ceiling return air) and low level (exhaust air). The air distribution moves downward and outwards from the table providing an ultra clean air zone directly under the diffuser and surrounding operating table.

The Focus 3000 unit continually purges clean air, diluting any airbourne particles that may have formed around the surgical team away from the theatre clean zone. A particulate free environment is maintained through the passing of a percentage of theatre return air mixed with temperature controlled fresh air back through HEPA filters and returning this ultra clean air to the clean air space under and surrounding the unit.

Selection

Manufactured by Airepure® Australia Pty Ltd
Model no.: Focus 3000

TRADEMARK NO: 791727 AUSTRALIA
DESIGN REGISTRATION AU 133659 S

Construction

The Focus 3000 Clean Air Operating Theatre Ventilation System is constructed from high quality zinc seal steel with epoxy paint finish to ensure a hard wearing cleanable finish. The diffuser is manufactured from stainless steel sheet perforated and formed to assist with the airflow distribution.

Dimension Clean Zone (nom): 2800 x 2800mm
Overall Size (nom): 3200 x 3200mm
Unit Depth 650mm
Supply Air Volume: 29801L/S
Conditioned Air Supply recommended: 1200L/S min.
Average face velocity at diffuser: 0.38m/s.

Performance

The installation of the Focus 3000 Clean Air Operating Theatre Ventilation System should take into consideration the unit mounting height, the ceiling height, the diffuser configuration and the quantity of conditioned air, the supply air temperature and the room construction. Correct installation of the system and the balancing of the supply and aid return air flow rates is important to ensure optimal performance.

Filter Selection

Provide: 8 x 65mm Minipleat HEPA filters
Supplier: Airepure® Australia Pty Ltd
Model: AirePanel CS Filter Efficiency: rated at 99.99% min efficiency on 0.3 micron.
Optional: 120mm HC Minipleat HEPA/ULPA filters

Note: Optional ULPA filters (99.9995% min efficiency on 0.12μm particles) are available for the Focus 3000 Clean Air Operating Theatre Ventilation System.

General Filter Information

Due to the critical nature of their end-use, Laminar Flow Grade filters are manufactured and tested in a segregated production area with its own Laminar Flow Grade air supply. Each filter is individually tested and inspected to ensure that it conforms to industry standards and meets or exceeds the expectations of the customer. The HEPA filter (or ULPA filter if selected) combined with the Focus 3000 unique design delivers ultraclean air over the operating table downwards and outwards. Optional pressure ports for monitoring filter pressure can be provided for connection by the BMS contractor.

Filter Replacement

Airepure recommend replacing gel seal HEPA filters when contaminated or the loaded pressure is reached, but no longer than 5 years from manufacture date due to possible degradation of the gel. Refer to https://www.airepure.com.au/issues-affecting-gel-seal-hepa-filters/

The information provided on this web page is accurate at the time of printing to the best of Airepure Australia’ knowledge, however, it should not be relied upon. Circumstances differ with every installation and location therefore suitability of all Airepure products should be confirmed with a qualified Airepure Technical Representative. ©Airepure Australia 2018