CN102283672A

CN102283672A - Wireless stethoscope

Info

Publication number: CN102283672A
Application number: CN 201110188309
Authority: CN
Inventors: 陈延伟; 艾文; 李奕
Original assignee: SHENZHEN ZIFU TECHNOLOGY Co Ltd
Current assignee: Xiao Xiao
Priority date: 2011-07-07
Filing date: 2011-07-07
Publication date: 2011-12-21
Anticipated expiration: 2031-07-07
Also published as: CN102283672B

Abstract

The invention discloses a wireless stethoscope, which comprises an auscultation head and an earphone, wherein the auscultation head comprises a shell body, and a sound transducer, a signal processing unit and a wireless signal emitter which are fixedly installed in the shell body, wherein the sound transducer, the signal processing unit and the wireless signal emitter are sequentially connected with one another; the earphone comprises a wireless signal receiver, a digital/analog (D/A) converter and a loudspeaker which are sequentially connected with one another; and the auscultation head and the earphone are wirelessly connected with the wireless signal receiver through the wireless signal emitter. The wireless stethoscope not only can detect the common heat sounds and breath sounds, but also can catch the special heat sounds, lung sounds and bowel sounds, and has the advantages of stability, reliability, high precision and simplicity in operation; the wireless stethoscope also can store the sound data in a memory for bringing convenience for latter lookup, and the data can be applied in teaching; and the wireless stethoscope has the real-time wireless communication function, can realize multiuser union diagnosis, improves the diagnosis efficiency and accuracy, and also satisfies the clinic teaching requirement.

Description

Wireless stethoscope

Technical Field

The invention relates to the field of medical instruments and medical teaching instruments, in particular to a wireless stethoscope.

Background

Cardiopulmonary sound auscultation is one of the most common methods for diagnosing cardiopulmonary diseases and understanding cardiopulmonary function. Although the traditional stethoscope is simple, the traditional stethoscope is difficult to capture some weak but important biological sounds emitted by internal organs of a human body, so that doctors cannot make a diagnosis in time. Particularly in harsh environments such as messy accident sites, busy emergency rooms and noisy ambulances, it is almost impossible to use a conventional stethoscope for effective diagnosis. And the traditional stethoscope is provided with a sound conducting rubber tube, so that the stethoscope is inconvenient to use and has the problem of large interference.

Disclosure of Invention

The invention aims to provide a wireless stethoscope, which can realize wireless auscultation, is convenient to use and reduces interference.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a wireless stethoscope comprises a stethoscope head and an earphone,

the auscultation head comprises a shell, and a sound sensor, a signal processing unit and a wireless signal transmitter which are fixedly arranged in the shell, wherein the sound sensor, the signal processing unit and the wireless signal transmitter are sequentially connected;

the earphone comprises a wireless signal receiver, a D/A converter and a loudspeaker which are sequentially connected;

the auscultation head and the earphone are in wireless connection with the wireless signal receiver through the wireless signal transmitter.

Preferably, the sound sensor includes a first sound sensor and a second sound sensor, the first sound sensor is mounted on a surface of the housing close to the human body, and the second sound sensor is mounted on a surface of the housing far from the human body.

Preferably, the signal processing unit includes a differential processor, a filter, a signal amplifier, and an a/D converter, which are connected in sequence.

Preferably, the filter comprises an intestinal sound filter, a heart sound filter and/or a lung sound filter.

Preferably, the number of the earphones is greater than or equal to 1.

Preferably, the headset further comprises a memory, which is connected to the wireless signal receiver.

The invention has the beneficial effects that: the invention can detect common heart sound and breath sound, and capture special heart sound, lung sound and bowel sound, and has the advantages of stability, reliability, high precision and simple operation; the sound data can be stored in a memory for convenient later reference, and the data can be applied to teaching; the system has a real-time wireless communication function, can realize multi-person combined diagnosis, improves the diagnosis efficiency and accuracy, and also meets the requirement of clinical teaching.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic structural diagram of a wireless stethoscope according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, the wireless stethoscope in this embodiment is composed of the following parts:

(1) the auscultation head: the device comprises a shell (not shown in the figure), and a sound sensor, a signal processing unit and a wireless signal transmitter which are fixedly arranged in the shell, wherein the sound sensor, the signal processing unit and the wireless signal transmitter are sequentially connected; wherein, sound sensor is used for gathering sound signal and converting it into the signal of telecommunication, has adopted 2 sound sensor in this embodiment: the stethoscope head is characterized by comprising a shell, a stethoscope head, a sensor and a control circuit, wherein the shell is arranged on the surface of the shell, which is far away from the human body and can be called an environmental sound sensor; one is installed on the casing of auscultation head and is close to the one side of human body, can be called human sound sensor for gather the stack of the biological sound of human body and the sound of the surrounding environment that the human body is located, signal processing unit is used for carrying out relevant processing to above-mentioned signal of telecommunication, including differential processor, wave filter, signal amplifier, the AD converter that connects gradually:

the difference processor is used for carrying out difference processing on the sound signals collected by the human body sound sensor and the environment sound sensor so as to obtain biological sounds (including heart sounds, intestinal sounds, lung sounds and the like) of the human body;

the filter is used for filtering the received signals, namely filtering the signals which are not in a preset frequency range, and as the frequency range of heart sounds is 0-600 Hz, the frequency range of bowel sounds is 0-1500 Hz, and the frequency range of lung sounds is 100-1500 Hz, according to the frequency range of heart-intestine lung sounds, the embodiment can adopt 3 special filters so as to be switched among different filters when needed;

the signal amplifier is used for amplifying the signals, and the signals are amplified in the embodiment because the heart, intestine and lung sounds of the human body collected by the sound sensor are weak and accurate judgment is convenient for doctors to make;

the A/D converter is used for carrying out analog-to-digital conversion on the signals, and is convenient for subsequent wireless transmission;

(2) the earphone comprises a wireless signal receiver, a D/A converter and a loudspeaker which are sequentially connected, and also comprises a memory, wherein the memory is connected with the wireless signal receiver, and the wireless signal receiver is simultaneously in wireless connection with the wireless signal transmitter of the auscultation head; wherein,

the wireless signal receiver is used for receiving the digital signal sent by the wireless signal transmitter of the auscultation head;

the memory is used for storing the data received by the wireless signal receiver for later reference and teaching;

the D/A converter and the loudspeaker are used for converting the received digital signals into analog signals and then playing the analog signals, and doctors can diagnose according to the sound.

In the wireless stethoscope, the wireless signal transmitter can set its own address (i.e. the address of each stethoscope head is different), so that the communication address of the wireless signal receiver can be set as the address of the stethoscope head to be listened to at the earphone end during application; in addition, the auscultation head is in a dormant state at ordinary times, when auscultation is needed, the earphone pages the auscultation head corresponding to the communication address through the wireless signal receiver, and the auscultation head enters an activated state after receiving the paging message to start working and carries out real-time data transmission with the earphone. In this embodiment, the wireless stethoscope can have two working modes: one is a single person auscultation mode, and the other is a multi-person combined auscultation mode. In a single auscultation mode of one person, only one earphone is needed, and wireless connection is established between the earphone and the auscultation head to realize auscultation; under many people's joint auscultation mode, need to use a plurality of earphones to all set for the address of same auscultation head with the communication address of the wireless signal receiver of these earphones, can realize a plurality of earphones and carry out real time data transmission with same auscultation head simultaneously after the activation like this, thereby realize a plurality of doctors and jointly auscultate.

The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.

Claims

1. A wireless stethoscope is characterized by comprising a stethoscope head and an earphone,

2. The wireless stethoscope of claim 1, wherein said sound sensor comprises a first sound sensor mounted to a side of said housing adjacent to said body and a second sound sensor mounted to a side of said housing remote from said body.

3. The wireless stethoscope according to claim 1 or 2, wherein said signal processing unit comprises a differential processor, a filter, a signal amplifier, and an a/D converter, which are connected in series.

4. The wireless stethoscope of claim 3, wherein said filter comprises an intestinal sound filter, a heart sound filter and/or a lung sound filter.

5. The wireless stethoscope of claim 1, wherein said number of ear pieces is greater than or equal to 1.

6. The wireless stethoscope of claim 1 or 5, wherein said earpiece further comprises a memory connected to said wireless signal receiver.