The stethoscope and the phonendoscope are devices that are often, in the eyes of ordinary people, directly associated with the figure of the doctor himself.
The stethoscope was born in France,thanks to the doctor Hyacinthe Laennec who was unable to detect the correct heartbeat of an obese patient using only her ear.
Over the years, increasingly high-performance technologies and materials have been used for the design of stethoscopes,up to the most recent models.
In this article we are going to see what the characteristics of the stethoscope and phonendoscope are, focusing in particular on those of the Littmann brand,recognized for decades in the medical world as one of the best global producers of these important diagnostic instruments.
Stethoscope and phonendoscope: what they are and differences
Stethoscope and phonendoscope are instruments designed to facilitate diagnostic auscultation of a patient by adoctor, who can therefore pick up the sounds inside the patient's organism.
What changes between the two instruments is the type of listening they allow: for the stethoscope it is the auscultation of the thorax,while the phonendoscope allows listening to the bowels.
The main difference between the two instruments concerns the part of the head that comes into contact with the patient.in both instruments, a rubber tube is connected to this head, which divides into an arch in its upper part and which allows the transfer of the sound captured to the earphones,so that the doctor can hear everything as clearly and precisely as possible.
What is the stethoscope
The stethoscope head is designed to pick up the highest, simplest sounds for a doctor to hear.
The head, or pavilion,it is the point where the instrument comes into contact with the patient's skin: in the stethoscope it is composed of a membrane or "diaphragm" and allows capture medium and high frequency sounds.In fact, the stethoscope is used for auscultations at chest level,such as the simple heartbeat.
What is the stethoscope
The head of the phonendoscope is more complex than that of the stethoscope and also performs a more sophisticated function: it allows it to capture the dullest and low-frequency sounds of the bowels of an organism.
The head isbell-shaped, with a smaller diameter than the stethoscope head, but there are also devices equipped with both a bell and a membrane, called "double pavilion", which can perform both functions.In particular, the phonendoscope, or phonendo, is used to auscultate low-frequency lung sounds,much more difficult to detect: it is therefore a fundamental device in promptly diagnosing some anomaly of the respiratory system or simply the malfunction of some internal organ.
Littmann stethoscopes and stethoscopes: quality for every need
The most chosen brand byof doctors of all kinds is certainly Littmann.
For decades on the market this brand has offered a vast repertoire of stethoscopes and phonendoscopes suitable for every need of medical personnel,even the most specialized ones.
The materials used are of the highest quality and the design is particularly accurate: the tubes are resistant to use over time, and the ear tips adhere comfortably and anatomically to every type of ear.As mentioned, Littmann devices are also distinguished by the specific use that various medical professionals need.
The best Littmann stethoscopes for cardiologists
Littmann proposes special stethoscopes for cardiologists,with particularly sensitive head to detect heartbeat and any cardiac anomalies.
The Littmann® Cardiology IV™ stethoscope provides exceptional acoustic performance particularly on high-frequency sounds,those typical of the heartbeat.
Even more precise in detection is the stethoscope of the line Littmann Master Cardiology, which through a floating membrane allows the auscultation of high or low frequency sounds,simply adjusting the pressure on the head.
The best Littmann stethoscopes for pulmonologists
For pulmonology specialists an excellent tool is the stethoscope Littmann Master Classic II,with a double stainless steel head with epoxy fiberglass diaphragm, also equipped with a special aging-resistant PVC tube and a cold-proof neoprene ferrule.
It has a truly high ability to auscultate both very low frequencies,those used by pulmonologists to determine lung function, and higher ones to detect possible heart problems.You can modify the auscultation at low frequencies with a simple pressure on the floating membrane of the head, while with a slightly higher pressure you can hear the higher frequencies.
The best Littmann phonendoscopes and stethoscopes for general practitioners
For general practitioners,called for a first diagnosis, a very heterogeneous product can be the Littmann® Classic III™.
It is a stethoscope with a high acoustic sensitivity which allows an accurate diagnosis,thus allowing the general practitioner to best direct the patient towards further investigations.
These products feature a one-piece pressure sensitive double diaphragm, and are available in a wide range of different colours,with a particularly modern design.
The best Littmann phonendoscopes and stethoscopes for pediatricians
The size of the head of a stethoscope or phonendoscope also determines its effectiveness for use on adults and children.
Littmann also offers a wide range of pediatric products, such as stethoscopes for children, While the diameter of the head of a traditional stethoscope for adults is between 40 and 50 mm, the head of a pediatric stethoscope measures between 33 and 25 mm;there are also stethoscopes for newborns, with head diameters between 27 and 19 mm,to adhere correctly to the chest of small patients.
The best Littmann phonendoscopes and stethoscopes for students
Littmann also offers an assortment of stethoscopes and simpler and lighter stethoscopes with the line lightweight.
It's aboutinstruments which, despite good detection precision, are much lighter, with only 118 grams, and cheaper.
The teardrop shape of the head facilitates auscultation around the sphygmomanometer cuffs.It is the ideal tool for nurses but also for medical students.
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