DIAMOND MERCURIAL BLOOD PRESSURE APPARATUS/ BP PARA MACHINE

 DESCRIPTION

The Diamond Mercurial Blood Pressure Apparatus is a medical device, also known as a mercury sphygmomanometer, used for the manual and accurate measurement of a person’s blood pressure. It is a traditional and widely accepted tool in the medical community.

Here is a description of its key features and components:

1. Mercurial Measurement System:

• Mercury Column: The apparatus features a long glass tube filled with a column of mercury. This is the central component for measuring pressure.
• Purity of Mercury: The mercury used is typically of high purity, often specified as 99.99%, achieved through a triple distillation process to ensure accurate readings.
• Scale: The glass tube is marked with a clear, easy-to-read scale, usually ranging from 0 to 300 mm Hg. The markings are permanent, and the background is painted with a durable, contrasting color for enhanced visibility.

2.  Components:

• Cuff: A high-quality cuff with an excellent grip, often with extra Velcro fastening, is included. The cuff is designed to securely wrap around the arm to temporarily cut off blood flow.
• Bladder and Bulb: The device uses a proven, tested rubber bladder and bulb. The bulb is used to manually inflate the cuff, and the bladder holds the air pressure.
• Control Valve: A special control valve is included to allow for a smooth and perfect pressure drop during the measurement process, ensuring accurate readings.
• Stethoscope: The apparatus is used in conjunction with a stethoscope, which is used to listen for the sounds of blood flow (Korotkoff sounds) to determine the systolic and diastolic pressure.

3. Construction and Durability:

• Materials: The body of the apparatus is often made from a durable material like a die-cast aluminum pressure body or CRCA white metal sheet.
• Corrosion Resistance: Exposed metal parts are surface-plated to prevent corrosion and ensure longevity.
• Finish: The instrument’s body often has a classic “Hi-stove” or similar painting to withstand various climates.

4. Models and Variations:

• Diamond offers different models, including desktop/portable units and stand models.
• Portable/Desktop: These models are compact and come in a case for easy transport and storage.
• Stand Model: The stand model is designed for stability and mobility, with a wide base and smooth-rolling caster wheels. The height is often designed to be suitable for use at a standard hospital bed level.

5. How it works (Principle of Operation): The operation of the Diamond Mercurial Blood Pressure Apparatus is based on the traditional auscultatory method. The process involves:

1. Wrapping the cuff around the patient’s arm.
2. Inflating the cuff manually with the rubber bulb until it temporarily cuts off blood flow.
3. Slowly releasing the pressure using the control valve while listening with a stethoscope over the brachial artery.
4. The point at which the first sound is heard corresponds to the systolic blood pressure (the pressure when the heart beats).
5. The point at which the sounds disappear marks the diastolic blood pressure (the pressure when the heart rests between beats).
6. The readings are taken directly from the mercury column in millimeters of mercury (mm Hg).