JPH0527113B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a patient mannequin device used for training in diagnostic techniques by auscultation of heart diseases in the course of medical education and the like.

(Background of the Invention) In general, it is not possible to encounter cases of heart disease that are required for education in a planned or intentional manner, and therefore it is best to acquire practical medical treatment skills through case experience. It's reality.

On the other hand, the method of using a real person as a pseudo patient is possible as an introductory education to acquire basic skills in auscultation, but actual examinations showing various pathological conditions can only be done through experience, which shows the limitations of this method. It is something.

(Conventional technology) Conventionally, USP3947974,
There are USP3662076, USP3384981, etc.

(Problems to be solved by the invention) In these devices, all the information related to hearing comes from artificial synthesized sounds, and the resistance changes due to the temperature change due to the electric circuit system, and when synthesized by a microcomputer, the complex sound Therefore, unlike heart sounds that can be heard from the human body, there are drawbacks such as electrical interference in the propagation of the sound to the site where the sound occurs.

In addition, the stethoscope used in daily medical practice cannot be used for listening, and a special stethoscope equipped with a training mannequin is required, and metal parts such as a pressure device inside the mannequin, Due to differences in the sound propagation density of the devices, the reproducibility of the sound signal is not sufficient.

Furthermore, conventional mannequin devices that express various information on heart sounds include pressurization devices, sound signal regenerators,
Because it includes a voltage comparison circuit, etc., it is heavy and cannot be carried around because it requires connection to a computer circuit to control multidimensional information.

(Means for Solving the Problems) The present invention has been made to solve the above technical problems, and is capable of producing heart sounds similar to those of an actual human being.
The technical means is to provide a portable device that faithfully reproduces images without interference from other devices or electrical circuits. In a mannequin with only the upper body formed of a foam layer, a speaker is disposed on the back side of the urethane foam layer, and the heartbeat sound is emitted from the speaker by an electrical signal sent from the outside of the mannequin. This is a manikin device for heart disease auscultation training, characterized in that it is configured to reproduce.

(Effects of the Invention) Since the present invention has the above configuration, it has the following effects.

By playing back body sounds recorded in actual cases, it becomes possible to learn practical medical treatment techniques using sounds similar to those heard directly from the human body.

Since the heart sounds are generated by electrical signals sent from outside the mannequin, the sounds are not adversely affected by metal parts or the like inside the device as in the past.

Since urethane foam has properties similar to the propagation of sound within the human body, the reproduced sound is almost the same as that heard directly from the human body.

No special stethoscope is required for auscultation training.

The entire device is lightweight, making it portable.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

A is a mannequin device according to the present invention, the surface of which is formed of a layer 1 of urethane foam, the thickness a of which is approximately 20 mm.

The outer surface 1' of the urethane foam layer 1 is coated with latex 2 to prevent damage to the urethane foam surface (see FIG. 3).

Speakers 3a to 3d are arranged on the back surface 1'' of the urethane foam layer 1, and in the embodiment,
Four speakers are arranged: a speaker 3a corresponding to the aorta region, a speaker 3b corresponding to the pulmonary artery region, a speaker 3c corresponding to the tricuspid valve region, and a speaker 3d corresponding to the mitral valve region.

Note that commercially available earphones or the like can be used as the speaker.

Audio signals from a recorder C (a 4-channel one is used in the embodiment) are sent to these speakers 3a to 3d via an amplifier B.

Then, each speaker emits the sound recorded at the corresponding part, so that the sounds from each speaker are synchronized.

Therefore, the audio signal sent from recorder C is adjusted to an appropriate volume by amplifier B, and stethoscope D is
This means that auscultation training can be performed using the .

When the present inventor actually manufactured the mannequin device, it weighed approximately 3 kg including the head, making it extremely convenient to carry.

In addition, the sound heard at the apex of the heart using this mannequin device and the sound of an actual case collected from the apex of the heart of an actual human body (27-year-old male normal person).
A comparative test using Mingograph (manufactured by Siemens/Elema) etc. yielded the results shown in Fig. 4, and it was found that the two had the same frequency and tuned temperament, and were in excellent agreement.

It was also found that by installing a plurality of speakers as in the embodiment, a stereo effect can be obtained by the sound generated from each speaker.

Note that the surface of the urethane foam may be formed only in the part targeted for auscultation, that is, the chest of the mannequin.

[Brief explanation of the drawing]

Fig. 1 is a front view of the device of the present invention, Fig. 2 is a longitudinal sectional view of the same, Fig. 3 is an enlarged sectional view of a portion of the same, and Fig. 4 is a diagram showing the results of a comparison test between the device of the present invention and an actual human case. It is. A...Mannequin doll, B...amplifier, C...recorder, D...stethoscope, 1...layer of urethane foam, 2...latex, 3a-3d...speaker.

Claims (1)

[Claims] 1. In a mannequin doll with only the upper body whose surface is partly or entirely formed of a layer of urethane foam with a thickness of about 20 mm, a speaker is arranged on the back side of the urethane foam layer, and a speaker is provided from the outside of the mannequin doll. 1. A mannequin device for auscultation training for heart disease, characterized in that the speaker is configured to reproduce the sound of a heartbeat using an electrical signal generated by the speaker.