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The stethoscope is a medical device to listen to internal sounds of the body. It is usually used to listen to the sounds of the heart or breathing and can also be used to listen to the intestines and blood flow. It was invented by Rene-Theophile-Hyacinthe Laennec in 1816. It was first just a wooden tube.

In 1851 Arthur Leared invented the binaural stethoscope and that has become the standard model ever since then. Several years there the a model that was developed to connect to different locations of the body to create a stereo effect, but it didn’t see as much use in the medical world then the one that Leared invented. Since the 1960’s stethoscopes have taken some turns and have been refined. The acoustical performances of stethoscopes have been constantly improved over the past couple of decades.

However, it was not until Dr. David Littmann invented his stethoscope that there were major changes. After his invention, many doctors began to carry around different stethoscopes than the nurses. The nurses would carry around one type, while the doctors carried the ‘two-sided chest piece’ stethoscope. This becomes the stethoscope of choice in America and it is still the basis for most stethoscopes used in the medical world today.

Today, the stethoscope is used to help with diagnosing many diseases and conditions. Usually, the first thing that a doctor will do is taking your blood pressure and use the stethoscope to listen. They will also ask you to take deep breaths in order to tell if anything is blocking your lungs. The stethoscope is able to transmit the sounds and exclude others. Stethoscopes are a symbol of the medial world and usually doctors or nurses are seen carrying them around their necks. One way that they are used outside the medical world is by mechanics.

Stethoscopes are used to isolate sounds of particular engine parts for their own diagnosis.

There are two different types of stethoscopes. One type is the acoustic stethoscope. This is to diagnose people and operates by transmission of the sound from the chest piece to the hollow tubes and to the person’s ears.

The chest piece usually has two sides, one a plastic disc and the other a hollow cup. A diaphragm is places on the patient to listen to the sounds or vibrates of the body. The bell or hollow cup is placed on the patient to listen to the vibrations of the skin directly sends pressure waves to the doctor’s ears. The bell transmits low sounds, while the diaphragm is to transmit sounds with higher sound wave frequencies. The electronic stethoscope requires the conversion of acoustic sound waves to an electrical signal.

They are based on transducers and vary widely. This is not a popular type of stethoscope, but has found to be useful in certain situations.

Author: Jarl Jacobsen

The author J. L. Jacobsen is a freelance writher, and writhe articles of difference stuff. Medical is one of the favourites. http://www.online-medical.biz http://www.stethocsope.biz

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Previous post, You already know that 3M Littman is one of the best brand medical stethoscopes in the market. If you want to get great deals on medical stethoscopes, get useful guide from our blog here. For this posts, you will clear that which model of littman stethoscopes is proper to you.

A doctor uses a stethoscope to listen to sounds in your body that reveal the state of your health. This, in turn, allows the doctor to diagnose and treat your ailment, if any, early. Your doctor is best served if he uses a stethoscope which gives maximum clarity of sound.

There are several Littman Stethoscopes in the market.

Master Classic II

A Master Classic II is clear even in a place where there’s a lot of ambient noise, such as a bus. Therefore it is suitable for doctors working in mobile hospitals, or other places where there are visitors, children, etc.

Cardiology III

Cardiology III is suitable for listening to lung sounds along with apical pulses. This stethoscope is also a favorite with pediatricians, as it comes with a pediatric-sized diaphragm. This scope lacks a bell. But it has been found that by pushing down on either side of a Cardiology III, one gets the same effect as a bell. This all-round quality of a Cardiology III also makes it sought after by med school students.

Littman II Pediatric Stethoscope

As the name suggests, this is a scope meant especially for pediatrics. Although some pediatrics favor the Cardiology III, because of the latter’s superior acoustic quality, this scope comes with a bell, which is missing in the case of a Cardiology III.

Classic III

While the Classic II is among the most popular stethoscopes, doctors prefer the Classic III when they treat patients suffering from BP.

Model 3000

The manufacturers claim that this stethoscope is technologically equipped to reduce ambient sound, while amplifying organ sounds, simultaneously.

Some users claim to be attracted by innovation in these stethoscopes. They cite the example of different designs of ear-tips available, to cater to different needs of different users. They also say that the settings can be changed using one hand, leaving the other free for any other work, such as checking the blood pressure of the patient.

Others claim to like the variations in size, weight, ease-of-use, or longevity.

From indications, this scope could become an all-round favorite of various specialists, in the near future.

Author: Richard Runion 

Richard J. Runion is the President of Geostar Publishing & Services LLC. Rich loves net research & blogging. His new blog on Littman Stethoscopes is fast becoming popular, as it is comprehensive and well-researched. Read his blog at: http://www.littmanstethoscopereview.com

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Last but not least, we provided a greaty history of the medical stethoscopes that you never know before. Don’t miss to read that topic.

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