microlife ST-77 Sprague Rappaport Stethoscope User Guide
- June 6, 2024
- microlife
Table of Contents
SPRAGUE RAPPAPORT ST-77
Features
- Functions convert for multifunctional «5-way» purposes in one unit
- Furnished with 3 different sizes of bell chest pieces
- Large/Small diaphragms for heart sound’s of low/high frequencies
- Adult/Medium/Infant size bells for L/M pitched sounds, murmurs, and inner rib detection
- Name card included
Designed for all purposes, you will find these combinations are astonishingly well-engineered and their high sensitivity will enable you to clearly discern both low and high frequencies and to hear the faintest of murmurs with ease. Also, spare ear tips of 3 different sizes are provided enabling the user to choose a pair that best fits for comfortable use. They are packed in a small compact case accompanied by 3 bell-type chest pieces, and 2 spare transparent plastic diaphragms, large and small.
Sprague Rappaport Type Improved Stethoscope comes as a complete set with the following components:
1. Chest piece with large and small diaphragm ……………………………… 1 pc
2. Binaural, chrome-plated with white plastic medium
size ear tips …………………………………………………………………………… 1 pair
3. Heavy wall tubing with metal clip ……………………………………………… 1 pair
4. Interchangeable bell-type chest piece, adult size ……………………….. 1 pc
5. Interchangeable bell-type chest piece, medium size …………………… 1 pc
6. Interchangeable bell-type chest piece, infant size ………………………. 1 pc
7. Spare ear tips, large and small size ………………………………………….. 2 pairs
8. Spare transparent plastic diaphragms, large and small ……………….. 2 pairs
9. Plastic container for accessories ………………………………………………. 1 pc
The structure of the chest piece
Large Diaphragm: This is to detect heart sounds of low frequency,
diastolic, and the third heart sound, as well as the first and second heart
sounds. The high-pitched murmurs emitting from the heart are also detectable.
Small Diaphragm: This is designed to hear infant heart sounds of a high-
pitched nature.
Adult Size Bell: To pinpoint low and medium-pitched sounds and murmurs
this bell is deemed to be very useful. Medium Size Bell: Concentrates on
narrow spots such as between the ribs or any other small place to detect low
and medium-pitched sounds or murmurs.
Infant Size Bell : Best suits the examination of infants and small
children. Low and medium-pitched sounds and murmurs emitting from an infant’s
heart are best sensed by this bell.
How to use
The Sprague Rappaport is dual-headed and readily provided with both large and
small size diaphragms fitted on a revolving twin head drum which contains a
leakage-free stem valve made with micro-fine precision.
The operation procedure are as below
- First of all, put the binaural tips in the ears.
- A soft tapping of the diaphragm with your finger will let the sounds come through and you can then determine if it is working and positioned correctly.
- If you don’t hear the tapping sound, rotate the head 180° where it will click and settle in the ready position, facing the opposite side.
- Tap the diaphragm again and you will hear the tapping sounds which means the device is correctly set for use.
- Now you can diagnose the examinee with the stethoscope.
- Go through the same procedures when you switch from one chest piece to another.
Guarantee
This device is covered by a 2-year guarantee from the date of purchase. During this guarantee period, at our discretion, Microlife will repair or replace the defective product free of charge. Opening or altering the device invalidates the guarantee. The following items are excluded from the guarantee:
- Transport costs and risks of transport.
- Damage caused by incorrect application or noncompliance with the instructions for use.
- Damage caused by accident or misuse.
- Packaging/storage material and instructions for use.
- Regular checks and maintenance (calibration).
- Accessories and wearing parts: Ear tips, transparent plastic diaphragms Should guarantee service to be required, please contact the dealer from where the product was purchased or your local Microlife service. You may contact your local Microlife service through our website: www.microlife.com/support Compensation is limited to the value of the product. The guarantee will be granted if the complete product is returned with the original invoice. Repair or replacement within the guarantee does not prolong or renew the guarantee period. The legal claims and rights of consumers are not limited by this guarantee.
Storage conditions:
-20 – +55°C / -4 – +131°F
10 – 80% relative maximum humidity
Please report any serious incident that has occurred in relation to the
device, injury, or adverse event to the local competent authority and to the
manufacturer or to the European authorized representative (EC REP)
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