Hans Rudolph 7450 Mask

The Hans Rudolph Story

During the early 1930s Mr. Hans Rudolph designed and built what were possibly the first Respiratory Valves specifically for use in Pulmonary Function Studies with humans and animals. In 1960 Hans and John Rudolph formed and incorporated Hans Rudolph, inc. as it continues to exist today.

Hans Rudolph, inc. is a leading designer and manufacturer of respiratory valves and other respiratory products in the world today. Their innovative research and development is helping bring the field of Respiratory Healthcare into the twenty-first century.

Dedicated UK Support team

Cranlea Human Performance Ltd have been a Hans Rudolph distributor for over 30 years. Our support team are on hand to help you get the right component or accessory for your application.

Hans Rudolph 7450 series V2 Mask

Intended use:

The Hans Rudolph 7450 series Mask face piece is designed for use with the Hans Rudolph Two-Way Non-Rebreathing Valves (NRBV) and other mask adapters, designed for respiratory circuits with spontaneously breathing patients connected to a respiratory flow meter or other device. The typical mouthpiece and nose clip is replaced by this face mask assembly and headgear. The Hans Rudolph 7450 masks and valves are supplied clean, non sterile. Typical applications are for pulmonary function testing, exercise testing and respiratory research. These mask valves are classified as reusable and can be high level disinfected.

Hans Rudolph 7450 Mask Features

• Five Sizes of Face Pieces to cover a wide range of patient sizes.
• Face Piece with New Facial Sealing Flange is a single piece mask, made of clear soft Silicone Rubber.
• Anatomically Contoured Face Mask design with resilient ribbed support structure for a leak free comfortable fit and integrated Chin Cup for stability.
• Easily adjustable, light weight, 5 strap Headgear for patient comfort, available in three sizes.
• New Quick- Release Strap Clips for quick and simple mounting and dismounting of Headgear.
• Reusable mask face pieces; steam autoclavable, cold chemical, pasteurization and dishwasher safe.
• Reusable NRB Valves validated for high level disinfection by cold chemical.
• NRB Valves available in T & Y Shape in several sizes covering a full patient range.
• Custom mask Adapters designed and manufactured per your request

Hans Rudolph 7450 Mask Application & Fitting

1. Determine patient mask size with optional Mask Sizing Gauge
2. Place mask over patient’s nose and mouth. Chin should fit into mask chin cup portion with top of mask sealing area on the bridge of the nose.
3. Slide headgear over patient’s head with one of the lower quick release strap clips disconnected. Reconnect headgear strap clip after headgear is mounted. Bottom straps should be positioned below ears and top straps above ears and below eyes.
4. Adjust headgear strap tension by pulling slightly away from the face on strap end hook sections until tension is evenly distributed at all four straps with mask snug but comfortable. The strap clips lock and hold the position of the strap. To loosen the straps pull up on the back of the clip. Attach hook ends to the headgear fabric to keep the ends attached and out of the way. Adjust straps at crown of head by pulling each in opposite direction until reaching the required tension then connect Velcro.
5. Push the flow meter patient side into the port opening in the flexible mask adapter

Cleaning and Sterilisation

Manual Cleaning (Mask & Mask Adapter):

1. Soak components for 5 minutes in warm water with mild detergent (neutral pH).
2. Hand wash components with sponge or soft brush; then rinse with warm tap water.
3. Place components in warm water bath and agitate for two minutes.
4. Rinse in clean tap water for at least 1 minute.
5. Allow components to air dry or dry with clean, lint free cloth.

Manual Cleaning (Headgear):

1. Submerge headgear in warm soapy tap water; gently rub all areas.
2. Rinse in clean tap water for 1 minute or until all soap is removed; air dry.
3. Precaution: Do not use bleach, chlorine or alcohol based solutions to clean mask or headgear. These solutions can damage components. Direct sunlight exposure
   on mask and headgear components can cause deterioration and reduce product life.

Reassembly of the Hans Rudolph 7450 Mask

Install flexible mask adapter into face mask port opening with the mask adapter flanges placed on the inside and outside of the mask port opening. This may require some stretching and pulling to completely install the mask adapter such that the flanges are fully engaged and not disfigured.

1. Mount headgear to the face piece with the snap-in quick release clips.

Functional Check

1. Mask adapter flanges should be stretched to fit snug without disfiguration on either side of the mask port opening. Do not use if the mask adapter is not completely engaged in the mask port opening.
2. For function test hold palm of hand over the outlet of the mask adapter and create a slight positive pressure inside the mask by exhaling gently. If you detect a leak, reposition the mask or adjust straps tension. If leak continues regardless of adjustments try the next smaller size mask.
3. Push the patient port side of the flow meter into the flexible mask adapter. It should fit snug and not fall out without significant pulling.
4. Do not use if it is non-functional.

Hans Rudolph 7450 Mask and Headgear Service Life

Mask, mask adapter and headgear when maintained and reprocessed per these instructions are expected to stay in service for 25 disinfection or sterilisation cycles
and the headgear 25 cleaning cycles. Visual inspection of the components during reprocessing will identify any defects. If defects are identified dispose of and do not
use.

Storage:

1. Components should be completely dry prior to storage in a sealed poly bag
2. Label poly bag with disinfection/clean status, mask description, date and initials.