Twin-O-Vac Operating Instructions Issue 5

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1.0 INTRODUCTION

C O N T E N T S

These instructions are intended to provide users with information on the features, use and care of the Twin-O-Vac Suction/Therapy Unit. It is important that these instructions are read and fully understood by every intending user before any attempt is made to use the Twin-O-Vac on a patient.

PAGE 1.0

INTRODUCTION

2

2.0

GENERAL DESCRIPTION

2

3.0

SAFETY PRECAUTIONS

3

4.0

PARTS IDENTIFICATION

3

5.0

PRINCIPLE OF OPERATION

4

6.0

OPERATIONAL CHECK

4

7.0

EQUIPMENT APPLICATION

5

8.0

CLEANING AND DISINFECTION

8

9.0

USER MAINTENANCE

8

10.0

SPECIFICATIONS

10

11.0

SERVICE RECOMMENDATIONS

11

12.0

WARRANTY

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2.0 GENERAL DESCRIPTION The Twin-O-Vac is a venturi actuated suction unit which features two self sealing oxygen supply sources to facilitate multiple therapy applications. The Twin-O-Vac may be connected directly to an oxygen pipeline or a cylinder regulator with a pre-set delivery pressure. Flowmeters and other accessories should be ordered separately. A vacuum gauge fitted to the head of the Twin-O-Vac indicates the vacuum generated by the unit. Two basic models are available, one with a high suction capability up to approximately -400 mmHg (-53 kPa) and the other with a lower suction performance pre-set to provide a maximum of -200 mmHg (-26 kPa).

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11.0 SERVICING RECOMMENDATIONS

Suction Control Knob Nylon plastic, colour coded yellow.

A Twin-O-Vac is a piece of life saving emergency equipment. To ensure that the unit is always in a reliable, useable condition it is recommended that the unit be placed on a preventative maintenance program (every 6 to 12 months depending on usage) with your local service centre. This will provide more detailed checks of internal components such as the venturi and suction control valve assembly.

Oxygen Flow Performance Minimum flow rate from oxygen outlets: 125 L/min Bacteria Filter A Standard Millipore brand filter, number AAWP03700 (0.8 micron) acts as a bacteria filter between the jar contents and room air. Nominal diameter 37mm (1 7/16”). Other Materials Head Casting - anodised aluminium. Suction valve - brass Venturi - brass Jars - High heat polyphthalate carbonate. Handwheels - Colour coded Nylon plastic with brass insert. Outlet Connections - Chrome plated brass.

12.0 WARRANTY Comweld Group Pty. Ltd. warrants the purchaser that this equipment is free from defects in material and workmanship for a period of six years from the date of purchase (conditions apply).

Weight Twin-O-Vac without gauge 620g. Twin-O-Vac with gauge 720g.

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10.0 SPECIFICATIONS

3.0 SAFETY PRECAUTIONS TM117G

TM118

518632

518633

Inlet Pressure

400 kPa

50 psi

400 kPa

50 psi

Inlet Connection

SIS

DISS

SIS

DISS

Outlet Connection (Suction)

Tubing connection nominal 8mm I.D. (5/16” I.D.)

Outlet Connection (Oxygen)

SIS

DISS

SIS

DISS

Developed negative pressure at max setting. (mmHg)

400 min

350 min

150-200 min

150-200 min

Free air displacement (L/min)

16

14

16

16

Gas consumption (L/min)

22

20

22

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4.0 PARTS IDENTIFICATION

The Twin-O-Vac should only be used if all of its parts are in good condition.

VACUUM GAUGE

When using the Twin-O-Vac and accessory equipment, ensure:

OXYGEN INLET Handwheel connects to oxygen pipeline or regulator outlet

- No smoking, naked flames or sources of ignition nearby. - Use no oil or greases. - Open cylinder valve slowly and fully. - Turn off cylinder valve when not in use. - Keep cylinders cool. - Do not dump or drop cylinders. Do not block the suction venturi outlet located at the rear of the Twin-O-Vac. If the outlet is blocked a positive pressure could be delivered to the patient. Do not allow liquid in the Twin-O-Vac jar to fill past the 400 ml level.

NOTE: SIS - Sleeve Indexed System as per AS2896 DISS - Diameter Indexed Safety System as per CGA V-5 CGA - Compressed Gas Association

GAUGE ADAPTOR

OXYGEN OUTLET

OXYGEN OUTLET

JAR SEALING WASHER

SUCTION INLET NIPPLE (Patient Connection)

BACTERIA FILTER

RECEIVER JAR

Always empty the Twin-O-Vac jar before removing the unit from the oxygen source. If the bacteria filter becomes wet from the liquids in the jar the available suction pressure will be seriously restricted.

The following specifications apply to all models:-

Always fit a new bacteria filter to the Twin-O-Vac after use with each patient.

Capacity Receiver Jar Large - 400 ml

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Figure 1

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5.0 PRINCIPLE OF OPERATION

The filter consists of two parts, a thin filter disc which is placed against the wire mesh screen and a thicker backing disc which is placed on top of the filter. See Figure 2.

Suction - The oxygen source gas is controlled by a needle valve which permits adjustable flows to be directed to a venturi. Flow through the venturi generates a negative pressure in the jar which is transferred via suction tubing to a catheter or handpiece. A bacteria filter is fitted in the Twin-O-Vac head and all entrained air is discharged via this filter. Oxygen Outlet - The source gas is supplied to two self sealing outlet valves which are opened automatically by the attachment of therapy equipment. Oxygen flows are not controlled on the Twin-O-Vac itself but are instead controlled via the added therapy equipment such as a flowmeter. Each service is independent of the other, therefore, one or two oxygen applications can be carried out in addition to one suction application.

WIRE MESH

HOLDING CLIP

9.1 Twin-O-Vac Accessories

9.2 User Replacement Parts

Listed below are some of the accessories suitable for use with the Twin-O-Vac. It is recommended that if any other accessories are intended to be used with a Twin-O-Vac your nearest authorised distributor should be contacted to check the compatibility of the accessory.

Listed below are the items that are considered to be user replaceable parts. It is recommended that the user keep stock of items such as filters, o-rings and the sealing washer to ensure that the Twin-O-Vac is quickly replenished after any items are used.

Description Series-O Oxygen Regulator - Type 10 Handwheel inlet, SIS Outlet Series-O Oxygen Regulator - Pin Index Yoke inlet, SIS Outlet EZI-FLOW Oxygen Flowmeter - 0-15 l/min, SIS Handwheel Inlet EZI-FLOW Oxygen Flowmeter - 0-2.5 l/min, SIS Handwheel Inlet Flowmeter Gauge Type - 0-14 l/min, SIS Handwheel Inlet Humidifier - 1/4” BSP female Inlet Suction Tubing Suction Catheter Suction Handpiece

Item O-ring (oxygen inlet SIS handwheel) O-ring (gauge adaptor) Sealing washer for jar Receiver Jar 400 ml Gauge Vacuum (-100kPa) Bacteria Filter, Millipore AAWP03700 (Pack of 100)

Part No. 518800 518804 515800 515824 TM17 TM11

6.0 OPERATIONAL CHECK Remove the Twin-O-Vac plastic jar and turn the lid upside down.

THIN FILTER DISC & PAPER BACKING DISC (SHOWN TOGETHER)

COVER PLATE

Remove the domed filter cover plate by swinging the clip to one side and check that a clean, dry bacteria filter has been installed.

Figure 2. 4

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Part No. 552088 (10 Pack) 515754 (Kit) 515754 (Kit) 554024 522501 554050 (100 Pack)

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8.0 CLEANING AND DISINFECTION

8.2 Ethylene Oxide

The Twin-O-Vac and its accessories must be thoroughly cleaned after each use. When cleaning use only legally marketed commercially available disinfectants or sterilising agents. Disinfectants and sterilising agents must only be used in accordance with their manufacturers instructions.

After thorough cleaning in accordance with standard hospital procedures, the Twin-O-Vac may be disinfected in ethylene oxide gas. After disinfection, ensure that adequate purging and aeration is carried out before placing the unit back into service.

The exterior of the Twin-O-Vac should be cleaned by wiping over with a mild soap solution. Care should be taken that none of the cleaning solution enters the gas passages of the Twin-O-Vac.

9.0 USER MAINTENANCE

Note:

1. Inspect for cleanliness

1. For all cleaning and sterilisation procedures the vacuum gauge and the bacteria filter must be removed. After sterilisation, a clean, dry, bacteria filter should be fitted.

2. Check that a clean, dry filter is fitted and that filters are being changed regularly.

At monthly intervals carry out the following checks:-

7.0 EQUIPMENT APPLICATION

Replace the filter cover over the backing disc and slide the clip into place.

7.1 Applications

Check that the sealing washer for the plastic jar is in place and is undamaged. Replace the plastic jar and screw up tightly to avoid leaks. Check the pressure gauge to ensure that the pointer reads zero when there is no suction present.

Emergency: - Resuscitation carts - Portable Resuscitation kits - In the event of a power failure, as a standby suction unit.

Check the condition of the inlet and outlet gas specific connectors.

Ward: - Routine airway aspiration.

Check for any other damage that may have occurred to the Twin-O-Vac, especially the condition of the collection jar.

Paediatrics/Neonatal Ward: - The adjustable suction control, in conjunction with the suction gauge makes the Twin-O-Vac ideally suited to infant applications.(Use low suction unit for this application).

3. Check that inlet and outlet connections are tight. Check that the gauge connection is tight. If loose fittings are discovered, contact your local service centre.

2. Always sterilise the domed metal filter cover. 3. Do not immerse the Twin-O-Vac head in any fluid. 4. The use of chemical disinfectants is not recommended.

7.2 Items Supplied with the Twin-O-Vac - Millipore Filter - Receiver Jar - Adaptor for Vacuum Gauge - Vacuum Gauge - Operating Instruction Manual

4. Carry out the checks described in Sections 6.0 and 7.5 of this manual.

8.1 Autoclaving The Twin-O-Vac may be autoclaved but repeated applications may reduce the life of the product. Remove the vacuum gauge. Autoclave temperatures must not exceed 134˚C (280˚F).

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7.3 Installation of Vacuum Gauge

7.5 Suction Check

7.7 Oxygen Administration

Check that the gauge adaptor rotates freely and that the oring is seated in its groove inside the base of the adaptor. Insert the vacuum gauge into the adaptor, holding the gauge so that the face points to the front of the Twin-OVac or the best position for viewing. Tighten the adaptor onto the gauge by turning counterclockwise.

If connected to a cylinder regulator, ensure that the cylinder valve is turned on and that the regulator gauge indicates the contents. Block the end of the metal suction inlet nipple, and slowly open the suction control knob fully counter clockwise. Observe that suction pressure builds up gradually and that the gauge pointer does not stick at any position on the dial. Check that adequate maximum suction is generated when the control knob is fully open. (See specifications, Section 10.0). If the suction reading is low, recheck that the jar is tight, that the jar and washer are in good condition and that the gauge connection is tight.

The Twin-O-Vac provides dual oxygen supply facilities from a single oxygen pipeline outlet or fixed pressure cylinder regulator.

Note: Use only finger pressure to tighten the adaptor onto the gauge as the o-ring will seal against the gauge inlet. Do not use tools to tighten. To change the angle of the gauge at any time, loosen the adaptor, turn the gauge and re-tighten the adaptor. 7.4 Connecting Twin-O-Vac to Oxygen Supply

7.6 Suction Operation

Ensure that the suction control knob is turned off fully clockwise and connect the handwheel to an oxygen pipeline or fixed pressure regulator. (Turn handwheel clockwise).

Turn off the suction control clockwise and check that there is no flow at this setting. (Listen for the hiss of escaping oxygen at the venturi outlet). If oxygen continues to flow contact your local service centre.

Tighten the handwheel firmly, but do not use excessive force or any tools because the o-ring will form an effective seal.

Attach the appropriate suction tubing and catheter or handpiece to the suction inlet nipple. Adjust the suction control knob counter clockwise, restrict the suction tubing by hand, and select the desired suction flow. The vacuum gauge will indicate the suction level developed by the Twin-O-Vac. 6

The oxygen outlets are self sealing fittings which will accept flowmeters or other standard oxygen administration equipment. If connected to a cylinder regulator, ensure that the cylinder valve is turned on. Attach a flowmeter to the self sealing oxygen outlet. Open the flowmeter flow control and check that operation is satisfactory through the full range of flows. Repeat this action on the second self sealing oxygen outlet if dual administration is required. Twin-O-Vac fitted with two flowmeters, humidifier suction tubing and catheter Figure 3 7