CN103892869A

CN103892869A - Stethoscope

Info

Publication number: CN103892869A
Application number: CN201210577592.4A
Authority: CN
Inventors: 刘树海; 徐峰; 李旭
Original assignee: Beijing Ultra-Thinking Electronic Technology Co Ltd
Current assignee: Beijing Ultra-Thinking Electronic Technology Co Ltd; Beijing Choice Electronic Technology Co Ltd
Priority date: 2012-12-27
Filing date: 2012-12-27
Publication date: 2014-07-02

Abstract

The invention provides a stethoscope which comprises an auscultation head, a branched pipe, stethoscope barrels and earplugs. The auscultation head comprises a pickup sensor and an electrocardio sensor, and the electrocardio sensor is an electric potential field sensor. When the stethoscope is used for auscultation, the stethoscope does not need to be in direct contact with the skin of a patient, the problem that due to the corrosion and ageing caused by the long-time direct contact between the auscultation head and the skin, inaccurate measuring parameters and deviation are generated can be avoided, and meanwhile cross infection can be avoided. In addition, the step that dc/dc or a separation chip is needed in a traditional digital stethoscope to carry out electrocardio separation is omitted, reliability is improved, and the device structure is simplified.

Description

A kind of stethoscope

Technical field

The present invention relates to the technical field of medical apparatus and instruments, particularly, relate to a kind of digital stethoscope.

Background technology

Stethoscope is the conventional diagnostic tool of doctor, and along with the progress of electronic technology, stethoscope also develops into by traditional acoustic stethoscope the electronic stethoscope occurring in recent years.In addition, manufacturing enterprise is in order to improve the competitive advantage of its product, developed to measure more accurately, use convenient digital stethoscope, and digital stethoscope has improved the power of test of acoustical signal.Some high-end digital stethoscopes also provide some new functions, for example: recording and playback, data show result intuitively also can be provided, and be presented at graphical display, on the stethoscopic basis of conditional electronic, increased electrocardio measurement function, Presentation Function simultaneously.

Application number is 200920318231.1 Chinese patent " a kind of Multifunctional visual stethoscope ", discloses a kind of Multifunctional visual stethoscope, comprises EGC sensor, electrocardiosignal amplifying circuit, blood oxygen transducer, central processing unit and display unit; Described EGC sensor is made up of three electrodes, and three electrodes obtain that health body surface potential is poor delivers to electrocardiosignal amplifying circuit input, and the output of electrocardiosignal amplifying circuit is connected to central processing unit, and blood oxygen transducer output is connected to central processing unit.Ecg wave form and heart rate can be in carrying out auscultation, observed, blood oxygen volume ripple, blood oxygen saturation and pulse frequency value can also be detected.

Application number is 200510063183.2 Chinese patent " the contact-type electronic stethoscope that can avoid auscultation time, noise disturbs ", a kind of contact-type electronic stethoscope that noise disturbs can avoid auscultation time is disclosed, this contact-type electronic stethoscope and human body contact portion are provided with auscultation head, in this auscultation head body, be provided with the contacting microphone that can receive human body organ sound, and the outside of this contacting microphone is provided with elastomer, when the contacting microphone in auscultation head is not in the time reaching certain pressure, keep certain distance with human body, can avoid in the time that auscultation head is mobile on health or medicated clothing surface, be in contact with one another the attrition accentuated of receiving ear-piercing and irrelevant human body information.

Stethoscope in these patents is all contact stethoscope, auscultation head directly need to be contacted with patient skin, easily makes auscultation head be polluted, and increases the probability of cross infection.In addition, owing to having increased electrocardio measurement function, also bring the difficulty of electrocardio isolation safe aspect, not only Expenses Cost, the while has also increased the power consumption of equipment greatly, has indirectly increased the financial burden of user.

Summary of the invention

For addressing the above problem, the invention provides a kind of digital stethoscope, comprise auscultation head, breeches pipe, receiver and earplug, it is characterized in that, described auscultation head comprises sound pickup sensor and EGC sensor, vibration signal when described sound pickup sensor is worked for gathering internal organs is also translated into the signal of telecommunication, and described EGC sensor is used for gathering bioelectrical signals.

Preferably, described EGC sensor is electric potential field sensor.

Preferably, described electric potential field sensor and described sound pickup sensor are positioned at same plane.

Preferably, described auscultation head also comprises hear sounds processing unit, electrocardio processing unit and primary processor, wherein: described hear sounds processing unit exports its amplification to described receiver for after receiving the hear sounds signal of telecommunication of being changed by described sound pickup sensor, and/or the described hear sounds signal of telecommunication is converted into hear sounds digital signal and delivers to primary processor; Described electrocardio processing unit is converted into electrocardiographicdigital digital signals and delivers to primary processor for after receiving the electrocardiosignal being gathered by described EGC sensor; Described primary processor is used for receiving described hear sounds digital signal and described electrocardiographicdigital digital signals, and it is processed into respectively to heart sound data and electrocardiogram (ECG) data.

Preferably, described primary processor is also for handover measurement pattern.

Preferably, described measurement pattern comprises hear sounds measurement pattern, electrocardio measurement pattern, hear sounds and electrocardio measurement pattern.

Preferably, described stethoscope also comprises display unit and memory element, and described display unit is used for showing described heart sound data and described electrocardiogram (ECG) data; Described memory element is used for storing described heart sound data and described electrocardiogram (ECG) data.

Preferably, described earplug is for being converted to acoustical signal by the described hear sounds signal of telecommunication.

Preferably, described hear sounds processing unit is with DSP, and described electrocardio processing unit is that electrocardio is processed front-end chip.

Preferably, the conplane surface coverage protecting film at described electric potential field sensor and described sound pickup sensor place.

Preferably, described heart sound data and described electrocardiogram (ECG) data are shown and/or are stored by terminal independently.

Stethoscope provided by the invention, in pick-up head, use electric potential field sensor (EPIC), electric potential field sensor (EPIC) is without directly contacting with patient skin, avoid being forbidden and the problem of deviation because long-term and skin directly contact the corrosion that causes and the aging measurement parameter causing, also can avoid cross infection simultaneously, omit in addition in traditional digital stethoscope and needed to adopt dc/dc or isolating chip to carry out electrocardio isolation, improved reliability, simplified device architecture.

Brief description of the drawings

Fig. 1 is the surface structure schematic diagram of the digital stethoscope that the present invention relates to;

Fig. 2 is the internal structure schematic diagram of auscultation head in first embodiment of the invention;

Fig. 3 is that first embodiment of the invention relates to stethoscopic operation principle block diagram;

Fig. 4 is the internal structure schematic diagram of auscultation head in second embodiment of the invention;

Fig. 5 is the using state schematic diagram of the auscultation head that relates to of second embodiment of the invention.

Detailed description of the invention

As shown in Figure 1, the external structure schematic diagram of digital stethoscope involved in the present invention, comprises auscultation head 11, breeches pipe 12, receiver 13, earplug 14 and display unit 15.The interior hollow of breeches pipe 12 and be installed with wire, auscultation head 11 is positioned at one end of breeches pipe 12 and connects wire, and by acoustic energy be converted to electric energy through wire transmission to receiver 13, earplug 14 is positioned at the two ends of receiver 13, and be connected with the wire in receiver, and convert electrical energy into sound wave output.

Fig. 2 is the internal structure schematic diagram of auscultation head 11, and as shown in Figure 2, auscultation head 11 has comprised sound pickup sensor 21, EGC sensor 22, protecting film 23.Wherein, that EGC sensor 22 adopts is electric potential field sensor (Electric Potential Integrated Circuit; be called for short EPIC); electric potential field sensor (EPIC) 22 is positioned at same plane with sound pickup sensor 21; and be evenly distributed on the surrounding of sound pickup sensor 21, described plane surface covers layer protecting film 23, avoids dust to enter.Sound pickup sensor 21 is for gathering the vibration signal producing when human body viscera is worked, and electric potential field sensor (EPIC) 22 is for gathering the bioelectrical signals from human body.What in the present embodiment, gather is hear sounds and electrocardiosignal.Due in the present embodiment EGC sensor adopt be electric potential field sensor (EPIC), therefore do not need electrocardioelectrode directly directly to contact with patient skin, can directly auscultation head 11 be positioned over to patient's cardiac position across medicated clothing.Auscultation head 11 by the cardiechema signals collecting and electrocardiosignal deliver to respectively processor, chip is processed, is amplified, then export receiver, display unit and memory element to and carry out auscultation, demonstration and storage.

Particularly, as shown in Figure 3, be stethoscopic operation principle block diagram in the present embodiment.The stethoscope of the present embodiment comprises sound pickup sensor 21, hear sounds processing unit 31, receiver 13, primary processor 33, electric potential field sensor (EPIC) 22, electrocardio processing unit 32, display unit 15 and memory element 35.Wherein, described hear sounds processing unit 31 is with mini DSP kernel, and described electrocardio processing unit is that electrocardio is processed front-end chip.Auscultation head 11 is positioned over to patient's cardiac position across medicated clothing, now, the cardiechema signals that sound pickup sensor 21 produces while gathering heart vibration, and cardiechema signals is converted to the signal of telecommunication is sent to hear sounds processing unit 31, after hear sounds processing unit 31 receives and amplifies after the described hear sounds signal of telecommunication, the wire of leading up to exports receiver 13 to, and the earplug 14 that receiver 13 connects converts the electrical signal to acoustical signal for auscultation; Another road is converted into and exports primary processor 33 to after digital signal and be processed into heart sound data, after deliver to display unit 15 and show, or deliver to memory element 35 and store.Electric potential field sensor (EPIC) 22 gathers patient's electrocardiosignal, and the described electrocardiosignal collecting is delivered to electrocardio processing unit 32 and process, after converting digital signal to, send to primary processor 33, after primary processor 33 is processed into electrocardiogram (ECG) data, deliver to display unit 15 and show, or deliver to memory element 35 and store.Wherein, display unit 15, memory element 35 can be integrated in one with stethoscope, also can show by stand-alone terminal, store.Wherein, primary processor 33 is also for carrying out measurement pattern switching, and measurement pattern comprises hear sounds measurement pattern, electrocardio measurement pattern, hear sounds and electrocardio measurement pattern.

In the present embodiment, adopt electric potential field sensor (EPIC) as stethoscopic electrocardioelectrode, without directly contacting with patient skin, avoid electrocardioelectrode aging and cause measurement parameter to be forbidden because long-term and skin directly contact the burn into causing, there is the phenomenon of deviation.

As shown in Figure 4 and Figure 5, be the second embodiment of the present invention.As shown in Figure 4, be the another kind of structure of auscultation head 11 in the present embodiment.Comprise two EGC sensor 221 and two EGC sensor 222, and sound pickup sensor 21(is not shown), described EGC sensor 221 and EGC sensor 222 lay respectively at the Different Plane of auscultation head 11, and two planes cover respectively layer protecting film 23.EGC sensor 221 described in the present embodiment is not shown with sound pickup sensor 21() be positioned at the plane contacting with measuring object, described EGC sensor 222 is positioned at the plane relative with described EGC sensor 221 place planes.As shown in Figure 5, for the using state schematic diagram of auscultation head in the present embodiment 11, auscultation head 11 is placed on to measuring object human heart position, it is side direction to the left, EGC sensor 221 place plane contact human bodies, measuring object is placed on the right hand plane at EGC sensor 222 places simultaneously, and EGC sensor can gather the electrocardiosignal from measuring object heart both sides, makes measurement result even more ideal and accurate.

Be understandable that, above embodiment is only used to principle of the present invention is described and the illustrative embodiments that adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.

Claims

1. a stethoscope, comprise auscultation head, breeches pipe, receiver and earplug, it is characterized in that, described auscultation head comprises sound pickup sensor and EGC sensor, vibration signal when described sound pickup sensor is worked for gathering internal organs is also translated into the signal of telecommunication, and described EGC sensor is used for gathering bioelectrical signals.

2. stethoscope according to claim 1, is characterized in that, described EGC sensor is electric potential field sensor.

3. stethoscope according to claim 2, is characterized in that, described electric potential field sensor and described sound pickup sensor are positioned at same plane.

4. according to the arbitrary described stethoscope of claim 1-3, it is characterized in that, described auscultation head also comprises hear sounds processing unit, electrocardio processing unit and primary processor, wherein:

Described hear sounds processing unit exports its amplification to described receiver for after receiving the hear sounds signal of telecommunication of being changed by described sound pickup sensor, and/or the described hear sounds signal of telecommunication is converted into hear sounds digital signal and delivers to primary processor;

Described electrocardio processing unit is converted into electrocardiographicdigital digital signals and delivers to primary processor for after receiving the electrocardiosignal being gathered by described EGC sensor;

Described primary processor is used for receiving described hear sounds digital signal and described electrocardiographicdigital digital signals, and it is processed into respectively to heart sound data and electrocardiogram (ECG) data.

5. stethoscope according to claim 4, is characterized in that, described primary processor is also for handover measurement pattern.

6. stethoscope according to claim 5, is characterized in that, described measurement pattern comprises hear sounds measurement pattern, electrocardio measurement pattern, hear sounds and electrocardio measurement pattern.

7. stethoscope according to claim 4, is characterized in that, described stethoscope also comprises display unit and memory element, and described display unit is used for showing described heart sound data and described electrocardiogram (ECG) data; Described memory element is used for storing described heart sound data and described electrocardiogram (ECG) data.

8. stethoscope according to claim 1, is characterized in that, described earplug is for being converted to acoustical signal by the described hear sounds signal of telecommunication.

9. stethoscope according to claim 6, is characterized in that, described hear sounds processing unit is with DSP, and described electrocardio processing unit is that electrocardio is processed front-end chip.

10. stethoscope according to claim 3, is characterized in that, the conplane surface coverage protecting film at described electric potential field sensor and described sound pickup sensor place.

11. stethoscopes according to claim 4, is characterized in that, described heart sound data and described electrocardiogram (ECG) data are shown and/or stored by terminal independently.