SU1202553A1 - Apparatus for ausculation - Google Patents

Description

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The invention relates to a medical technique and is applicable mainly in listening to ausculus prints associated with the activity of the heart and lungs.

The aim of the invention is a more complete differentiation of low, medium and high frequency auscultatory features by adapting the hearing aid of a physician to sound vibrations.

The drawing shows the device section.

The device for auscultation of cells cuts the hollow head 1, at least one sump duct 2, ear tips 3, a source 4 of variable pressure, which can be made in the form of an elastic balloon or one of the head walls can be made of elastic material.

The floor of the head 1 is connected to the sound conduit 2, ending with the ear tips 3, the source of alternating pressure is an elastic cylinder 4 fixed to the head 1, and the cavity 5 points 4 is connected to the cavity 6 of the head 1.

Listening of auscultatory signs is performed as follows.

Expose the surface of the patient's body in the projection of the location of the organs to be heard. The ear tips 3 of the device are inserted into the external auditory canals of the physician to achieve complete obturation. The head 1 is tightly applied to the patient's body surface, which ensures the sealing of the patient's system - the device is the doctor's ear: the communicating cavity 6 of the head J, the cavity 5 of the alternating pressure source, the cavity of the acoustic duct.

ear tips. The cavity of the outer ear of the doctor is limited on the patient’s side by the body’s surface, and on the doctor’s side by the tympanic membrane of the doctor’s ear (the tightness of the patient’s system — the doctor’s ear – ear is a prerequisite for quality auscultation). Listen to auscultatory signs. By using a variable pressure source 4, the pressure in the patient's device is changed smoothly — the ear of the doctor — until you get the best possible hearing of the auscultational signs of the desired frequency characteristics.

The device does not filter out sound vibrations in the head due to a change in its design, but

20 provide - differentiation of sound vibrations directly in the hearing aid of the doctor, adapting it to the perception of the desired frequency of the range of sound vibrations by

25 changes in the ability of the eardrum to perceive sound vibrations of a certain frequency. The latter is achieved by varying the degree of tension of the eardrum of the physician’s ear by changing the pressure in the patient's hermetic system — the device — the ear of the doctor (using a source of alternating pressure with which the device is supplied).

At the same time, such important characteristics of devices for auscultation as the shape and dimensions of the heads of the devices, the material from which they are made, the elastic-elastic properties of the membranes of the heads, etc. the proposed device does not have any influence on the achievement of the goal.

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Editor V. Ivanova

Compiled by E. Novikova

Tehred T. Tulik Corrector T. Kolb

Order 8342 / 3Tirage 72 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Claims (1)

(57 Device for auscultation containing a hollow head, at least one sound duct connected with it, equipped with an ear tip, characterized in that, in order to more fully differentiate auscultatory symptoms in the entire range of perceived frequencies by adapting the doctor’s hearing aid to sound vibrations, it