CN114938969A - Multifunctional stethoscope for preventing contact infection - Google Patents

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a multifunctional stethoscope for preventing contact infection, which comprises an acoustic-electric conversion unit, wherein an impedance unit is arranged above the acoustic-electric conversion unit, a loudspeaker is connected above the impedance unit through a lead, a telescopic adjusting rod is arranged to be a hollow structure, a universal joint is fixedly arranged at one end of the telescopic adjusting rod, one end of the universal joint is fixedly connected with one side of the impedance unit, a triggering mechanism is arranged in the telescopic adjusting rod, a positioning assembly is arranged in the telescopic adjusting rod and corresponds to one end of the triggering mechanism, and an anti-blocking module is arranged in the loudspeaker. The telescopic adjusting rod can adjust the length of the telescopic adjusting rod, so that the distance between medical care personnel and a patient can be increased, the contact with the patient is reduced, and the occurrence of a cross infection phenomenon is avoided.

Description

Multifunctional stethoscope for preventing contact infection

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a multifunctional stethoscope for preventing contact infection.

Background

The stethoscope, which is the most commonly used medical instrument by doctors, has great significance in the diagnosis of cardiovascular and cerebrovascular diseases and respiratory diseases, and the traditional stethoscope mainly comprises a pickup part (chest piece), a conduction part (rubber tube) and an auditory part (ear piece), and is equipment for collecting and amplifying the sound emitted from the heart, the lung, the artery, the vein and other internal organs, so that medical staff can monitor the heart rate of a patient.

Under the epidemic situation, for preventing cross infection, medical personnel often need keep certain distance when carrying out the rhythm of the heart detection to the disease, and medical personnel dress protective clothing back in addition, just can't wear the earplug again, and then just can bring the obstacle for the auscultation.

Disclosure of Invention

The invention aims to provide a multifunctional stethoscope for preventing contact infection, which can reduce the contact with patients, avoid the occurrence of cross infection and is convenient for medical personnel wearing protective clothing to use.

The technical scheme adopted by the invention is as follows:

a multi-functional stethoscope for protecting against contact infection, comprising:

the device comprises an acoustic-electric conversion unit, an impedance unit and a loudspeaker, wherein the impedance unit is arranged above the acoustic-electric conversion unit, and the loudspeaker is connected above the impedance unit through a lead;

the electrocardiogram generating module comprises electrode plates, an integrated mainboard and a power supply unit, wherein the integrated mainboard is assembled inside the sound-electricity conversion unit, two electrode plates are arranged and are arranged on the lower surface of the sound-electricity conversion unit and electrically connected with the integrated mainboard, and the power supply unit is integrated on the integrated mainboard;

the integrated mainboard is integrated with a wireless communication module, a Bluetooth module, a signal amplification module, a denoising module and a storage module, the wireless communication module is externally connected with a mobile phone end or a cloud server for communication through mobile data, the acoustoelectric conversion unit is connected with a mobile device through the Bluetooth module, the denoising module is used for denoising cardioelectric data, the signal amplification module is used for amplifying signals output by the denoising module, the storage is used for storing the signals output by the amplification module, and finally the signals are transmitted to the mobile phone end or the cloud server through the wireless communication module to generate an electrocardiogram;

the telescopic adjusting rod is of a hollow structure, one end of the telescopic adjusting rod is fixedly provided with a universal joint, and one end of the universal joint is fixedly connected with one side of the impedance unit;

the trigger mechanism is arranged inside the telescopic adjusting rod;

the positioning assembly is assembled inside the telescopic adjusting rod and corresponds to one end of the trigger mechanism;

the anti-blocking module is assembled inside the loudspeaker, the anti-blocking net is fixedly assembled at the upper end of the loudspeaker, the anti-blocking module comprises an annular pipe and a connecting hose, the annular pipe is fixed inside the loudspeaker and located below the anti-blocking net, a plurality of inclined air holes facing the anti-blocking net are further formed in the annular pipe, the connecting hose is communicated with the inside of the annular pipe, and one end of the connecting hose extends into the telescopic adjusting rod;

the inside of telescopic adjusting rod is provided with a piston piece, and when the piston piece shifts to the direction close to the port of the connecting hose, the connecting hose guides the air flow inside the telescopic adjusting rod to the inside of the annular pipe.

The acoustoelectric conversion unit is including installation shell, pickup assembly and electret vibrating diaphragm, the installation shell sets up the below at the impedance unit, pickup assembly and electret vibrating diaphragm all install the inside at the installation shell, one side coating of electret vibrating diaphragm has pure gold film, pure gold film is connected with the installation shell, the opposite side of electret vibrating diaphragm is provided with insulating lining ring, insulating lining ring is between installation shell inner wall and electret vibrating diaphragm.

The impedance unit comprises a protective shell, a field effect transistor and a diode, wherein the protective shell is fixed above the acoustic-electric conversion unit, the field effect transistor and the diode are both installed inside the protective shell, the field effect transistor comprises a source electrode and a grid electrode, and the diode is arranged between the source electrode and the grid electrode.

The telescopic adjusting rod comprises a fixed sleeve rod, a sliding sleeve rod and a connecting sleeve rod, the fixed sleeve rod is fixedly connected with one end of the universal joint, the sliding sleeve rod is slidably sleeved inside the fixed sleeve rod, and the connecting sleeve rod is slidably sleeved on the outer surface of the fixed sleeve rod.

A cavity is formed in the fixed loop bar and is communicated with the connecting hose, the cavity is sleeved on the outer surface of the piston piece in a sliding mode, and the piston piece is assembled at one end of the sliding loop bar;

the ladder groove has been seted up to the inside of connecting loop bar, the ladder groove is the structure of big-end-up, the inside in ladder groove is still slided the cover and is equipped with the limiting plate, the limiting plate with slip loop bar sets up to integrated into one piece's structure.

The piston spare includes piston piece I, piston piece II, universal driving shaft and fixed sleeve, piston piece I with the one end fixed connection of slip loop bar, II slip cap of piston piece are located the inside of slip loop bar, universal driving shaft fixed connection in the axle center department of II one sides of piston piece, and run through the slip loop bar, fixed sleeve fixed mounting in the inside of slip loop bar, fixed sleeve still slip cup joint in the surface of piston piece II.

The through-hole has been seted up to the one end that the slip loop bar is close to the piston spare, the fixed cover in the outside that the slip loop bar is close to the piston spare has connect inflation formula sealing washer, inflation formula sealing washer's inlet end extends to the inside and the fixedly connected with air duct of slip loop bar, the air duct with fixed sleeve's inside communicates each other.

The surface of slip loop bar is provided with flexible gasbag, flexible gasbag's both ends mouth inboard all is fixed with the sealing ring, is close to the sealing ring of fixed loop bar one side and the outer fixed surface of slip loop bar are connected, are close to the sealing ring of connecting loop bar one side and the surface sliding connection of slip loop bar, flexible gasbag is initial moulding for the inflation state, still set up the bleeder vent that is located flexible gasbag inboard on the slip loop bar.

The locating component comprises a locating clamping plate, a connecting shaft and a torsion spring, the locating clamping plate penetrates through the limiting plate and extends to the inside of the sliding sleeve rod, the connecting shaft is fixedly connected with one end of the locating clamping plate, the connecting shaft is rotatably connected with the inside of the connecting sleeve rod, the torsion spring is fixedly installed inside the connecting sleeve rod, and the torsion spring is further fixedly connected with one end of the connecting shaft.

Trigger mechanism includes trigger bar and gangbar, the trigger bar slide alternate in the inside of connecting the loop bar, the fixed stripper plate that has cup jointed in the middle part of trigger bar, the bottom fixedly connected with elastic connection spare of stripper plate, elastic connection spare fixed connection in the inside of connecting the loop bar, the gangbar sets up the below of trigger bar, the one end of gangbar with one side fixed connection of connecting axle.

The invention has the technical effects that:

the invention adopts the design of the telescopic adjusting rod, when auscultating a patient, medical staff can adjust the length of the telescopic adjusting rod in advance, so that the distance between the medical staff and the patient can be increased, the fixed loop bar and the connecting loop bar can slide relative to the sliding loop bar, the adjusting flexibility can be effectively increased, the friction force between the fixed loop bar and the sliding loop bar can be increased under the action of the piston piece, the connecting loop bar and the sliding loop bar can be relatively fixed under the action of the positioning component, the telescopic adjusting rod is prevented from shaking in the detection process, and the cross infection caused by the contact with the patient is avoided.

The invention adopts the combination of the impedance unit and the loudspeaker, so that medical personnel do not need to wear earplugs during auscultation, convenience is provided for the medical personnel wearing the protective clothing, and meanwhile, the conduction part of sound can be shortened, so that the quality of the sound is more real.

The invention adopts the design of the anti-blocking module, the anti-blocking module can blow airflow to the anti-blocking net under the assistance of the piston piece, so that dust adhered to the anti-blocking net can be effectively blown off, the loudspeaker effect of the loudspeaker can be further ensured not to be weakened, and beating sounds of the heart and the like of a patient can be effectively conducted out.

The flexible air bag is designed, when the telescopic adjusting rod is accommodated, and the fixed loop bar and the movable loop bar cannot move continuously relatively, the continuous flexible air bag is just between the fixed loop bar and the connecting loop bar, and the subsequent fixed loop bar extrudes the flexible air bag, so that air in the flexible air bag enters the anti-blocking module through the inside of the sliding loop bar and is finally blown onto the anti-blocking net, and the air flow blown out by the anti-blocking module is increased.

Drawings

FIG. 1 is a schematic view of an overall apparatus provided by an embodiment of the present invention;

fig. 2 is a schematic view of an electrode sheet provided by an embodiment of the present invention;

FIG. 3 is a block diagram of an integrated motherboard according to an embodiment of the present invention

FIG. 4 is a schematic diagram of an anti-clog module provided by an embodiment of the present invention

FIG. 5 is a schematic cross-sectional view of the interior of a fixed loop bar provided by an embodiment of the present invention;

FIG. 6 is an exploded view of the connection of the piston member and sliding sleeve rod provided by the embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of the inside of a connecting sleeve provided by an embodiment of the present invention;

fig. 8 is an enlarged view of a portion a of fig. 5 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an acoustic-electric conversion unit; 2. an impedance unit; 3. a loudspeaker; 4. a universal joint; 5. a telescopic adjusting rod; 501. fixing the loop bar; 5011. a cavity; 502. sliding the loop bar; 5021. a flexible bladder; 503. connecting the loop bar; 6. a trigger mechanism; 601. a trigger lever; 6011. a compression plate; 602. a linkage rod; 7. a positioning assembly; 701. positioning a clamping plate; 702. a connecting shaft; 703. a torsion spring; 8. an anti-clogging module; 801. an annular tube; 802. a connecting hose; 9. a start-stop button; 10. an inflatable seal ring; 1001. an air duct; 11. an elastic connecting member; 12. a piston member; 1201. a piston block I; 1202. a piston block II; 1203. a linkage shaft; 1204. fixing the sleeve; 13. an electrode sheet.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

As shown in figures 1-8, a multifunctional stethoscope for preventing contact infection comprises an acoustoelectric conversion unit 1, an impedance unit 2, a loudspeaker 3, a telescopic adjusting rod 5, a trigger mechanism 6, a positioning assembly 7, an electrocardiogram generating module and an anti-blocking module 8, wherein the impedance unit 2 is arranged above the acoustoelectric conversion unit 1, the loudspeaker 3 is connected with the impedance unit 2 through a lead for transmitting the heartbeat sound of a patient to the outside, the telescopic adjusting rod 5 is of a hollow structure, the length of the telescopic adjusting rod 5 can be changed, the telescopic adjusting rod 5 can be extended when in specific use, so that medical personnel can detect the patient at a longer distance, the telescopic adjusting rod 5 can be shortened when not in use, the storage space of the whole device is reduced, a universal joint 4 is fixedly arranged at one end of the telescopic adjusting rod 5, a damping pad is additionally arranged between contact surfaces of rotating shafts of the universal joint 4, and then can be relatively fixed after adjusting the direction of the universal joint 4, one end of the universal joint 4 is fixedly connected with one side of the impedance unit 2, the trigger mechanism 6 is arranged inside the telescopic adjusting rod 5, the electrocardiogram generating module comprises electrode plates 13, an integrated mainboard and a power supply unit, the integrated mainboard is assembled inside the sound-electricity conversion unit 1, two electrode plates 13 are arranged, the two electrode plates 13 are semicircular and ring-shaped, so that the normal listening of the stethoscope cannot be influenced, the two electrode plates are flush with the lower end face of the sound-electricity conversion unit 1, are arranged on the lower surface of the sound-electricity conversion unit 1 and are electrically connected with the integrated mainboard, the power supply unit is integrated on the integrated mainboard, the power supply unit is electrically connected with the integrated mainboard, preferably a button cell, a wireless communication module, a Bluetooth module, a signal amplification module, a noise removal module and a storage module are integrated on the integrated mainboard, the wireless communication module is externally connected with a mobile phone end or a cloud server for communication through mobile data, the sound-electricity conversion unit 1 is connected with a mobile device through a Bluetooth module, the mobile device is preferably a Bluetooth earphone, the denoising module is used for denoising the heart sound and electrocardio data, the signal amplification module is used for amplifying the signal output by the denoising module, the memory is used for storing the signal output by the amplification module, finally the signal is transmitted to the mobile phone end or the cloud server through the wireless communication module to generate an electrocardiogram, the positioning component 7 is assembled in the telescopic adjusting rod 5 and corresponds to one end of the trigger mechanism 6, the top end of the trigger mechanism 6 is fixedly connected with an on-off button 9, the on-off button 9 penetrates through one side of the telescopic adjusting rod 5, the purpose of operating the trigger mechanism 6 can be realized by pressing the on-off button 9, the anti-blocking module 8 is assembled in the loudspeaker 3, the upper end of the loudspeaker 3 is fixedly provided with an anti-blocking net, the anti-blocking module 8 comprises an annular pipe 801 and a connecting hose 802, the annular pipe 801 is fixed inside the loudspeaker 3 and is positioned below the anti-blocking net, the annular pipe 801 is further provided with a plurality of inclined air holes facing the anti-blocking net, the connecting hose 802 is communicated with the inside of the annular pipe 801, one end of the connecting hose 802 extends to the inside of the telescopic adjusting rod 5, and one end of the connecting hose 802 is fixedly provided with a one-way air valve;

wherein, the inside of the telescopic adjusting rod 5 is provided with a piston member 12, when the piston member 12 is displaced towards the direction close to the port of the connecting hose 802, the connecting hose 802 guides the air flow inside the telescopic adjusting rod 5 to the inside of the annular pipe 801.

In the invention, when the heart rate of a patient needs to be checked, a medical worker firstly starts the trigger mechanism 6 by pressing the start-stop button 9, the trigger mechanism 6 drives the positioning assembly 7 to remove the limitation on the telescopic adjusting rod 5, then the patient holds the sound-electricity conversion unit 1 by hand and pulls the sound-electricity conversion unit to the chest, and adjusted to the position corresponding to the heart under the direction of the medical staff, at this time, the sound wave of the beating of the patient's heart is transmitted to the loudspeaker 3 through the impedance unit 2, then the sound wave is amplified by the loudspeaker 3, so that the medical staff can listen to the heart rate condition of the patient conveniently, after the use, the piston member 12 is displaced inside the telescopic adjustment rod 5 during the process of housing the telescopic adjustment rod 5, so that the air flow inside the telescopic adjusting lever 5 enters the inside of the ring pipe 801 via the connection hose 802, then the dust is blown into the anti-blocking net through the inclined air holes, so that the dust adhered to the anti-blocking net is blown off.

Further, the acoustoelectric conversion unit 1 is including the installation shell, pickup assembly and electret vibrating diaphragm, the installation shell sets up in impedance unit 2's below, the installation shell sets up to the metal material, pickup assembly and electret vibrating diaphragm are all installed in the inside of installation shell, a sound for collecting acoustoelectric conversion unit 1 and drawing, the one side coating of electret vibrating diaphragm has pure gold film, pure gold film is connected with the installation shell, the opposite side of electret vibrating diaphragm is provided with insulating lining ring, insulating lining ring is between installation shell inner wall and electret vibrating diaphragm, form a electric capacity between pure gold film and the installation shell like this, when the electret vibrating diaphragm meets the sound wave vibration, arouse that the electric field at electric capacity both ends changes, thereby alright produce along with the change of sound wave and the alternating voltage that changes.

Further, the impedance unit 2 includes a protective case, a field effect transistor, and a diode, the protective case is fixed above the acoustic-electric conversion unit 1, the field effect transistor and the diode are both installed inside the protective case, the field effect transistor includes a source and a gate, and the diode is interposed between the source and the gate.

It should be noted that the capacitance between the electret diaphragm and the mounting case is relatively small, and thus its output impedance value is high. Above some tens of mega ohms, such high impedance can not be directly matched with the loudspeaker 3, but the field effect tube has the characteristics of extremely high input impedance and low noise coefficient, which can just solve the problem, and the purpose of connecting the diode is to play a role of protection when the field effect tube is impacted by strong signals.

The telescopic adjusting rod 5 comprises a fixed sleeve rod 501, a sliding sleeve rod 502 and a connecting sleeve rod 503, the fixed sleeve rod 501 is fixedly connected with one end of the universal joint 4, the sliding sleeve rod 502 is slidably sleeved inside the fixed sleeve rod 501, the connecting sleeve rod 503 is slidably sleeved on the outer surface, away from the fixed sleeve rod 501, of the sliding sleeve rod 502, the trigger mechanism 6 is arranged inside the connecting sleeve rod 503, the positioning component 7 is arranged between the sliding sleeve rod 502 and the connecting sleeve rod 503 and used for limiting the sliding sleeve rod 502 to be fixed relative to the connecting sleeve rod 503 under the condition of not being used, when the telescopic adjusting rod 5 needs to be extended, an operator starts the trigger mechanism 6 by pressing the opening-closing button 9, the trigger mechanism 6 drives the positioning component 7 to remove the limitation on the sliding sleeve rod 502, at the moment, the patient can drive the fixed sleeve rod 501 and the sliding sleeve rod 502 to gradually keep away from the connecting sleeve rod 503 through the patient traction impedance unit 2, and then the patient places the acoustic-electric conversion unit 1 at the position, corresponding to the heart, at the chest, of the patient, under the guidance of the amount of the patient And (4) finishing.

As shown in fig. 2 and 3, a cavity 5011 is formed inside the fixed sleeve 501, the cavity 5011 is communicated with the connection hose 802, the cavity 5011 is slidably sleeved on the outer surface of the piston member 12, the piston member 12 is assembled at one end of the sliding sleeve 502, when the sliding sleeve 502 is displaced relative to the fixed sleeve 501, the piston member 12 slides along the inside of the cavity 5011 under the extrusion of the sliding sleeve 502, so as to reduce the space inside the cavity 5011, and accordingly, the pressure inside the cavity 5011 is increased, so that the air inside the cavity 5011 can be squeezed into the annular tube 801 through the connection hose 802, and finally blown into the anti-clogging net through the inclined air holes, and finally the dust adhered to the anti-clogging net can be blown off, so that the sound amplifying effect of the loudspeaker 3 is not affected, a stepped groove is formed inside the connection sleeve 503, and the stepped groove has a structure with a large inside and a small outside, the limiting plate is further slidably sleeved in the stepped groove, the limiting plate and the sliding sleeve rod 502 are arranged to be of an integrally formed structure, and the limiting plate can limit the sliding sleeve rod 502 to be not separated from the inside of the connecting sleeve rod 503 when moving.

It should be noted that the structure of the cavity 5011 is similar to that of the stepped groove, but there is a certain gap between the sliding sleeve 502 and the cavity 5011, so that when the piston member 12 moves away from the port of the connection hose 802, external air can enter the cavity 5011 through the one-way air valve provided in the piston member 12, thereby implementing the air supplement action.

As shown in fig. 3 and 4, the piston member 12 includes a piston block i 1201, a piston block ii 1202, a linkage shaft 1203 and a fixing sleeve 1204, the piston block i 1201 is fixedly connected to one end of the sliding sleeve 502 and is slidably connected to the inside of the cavity 5011, the piston block ii 1202 is slidably sleeved inside the sliding sleeve 502, the specification of the piston block ii 1202 is smaller than that of the piston block i 1201, but the structure of the piston block ii is the same, the linkage shaft 1203 is fixedly connected to the axial center of one side of the piston block ii 1202 and penetrates through the sliding sleeve 502, the fixing sleeve 1204 is fixedly installed inside the sliding sleeve 502, one end of the fixing sleeve 1204 is fixedly connected to a support plate, the support plate is provided with a plurality of through slots located on the outer edge of the fixing sleeve 1204, the fixing sleeve 1204 is further slidably sleeved on the outer surface of the piston block ii 1202, and in an initial state, the piston block ii 1202 is located at the port of the fixing sleeve 1204.

In addition, a return spring is fixedly installed between the piston block II 1202 and the piston block I1201, the return spring is located on the outer side of the linkage shaft 1203, the return spring is stretched when the piston block II 1202 moves relative to the fixed sleeve 1204, and otherwise, the return spring can drive the piston block II 1202 to return to the port of the fixed sleeve 1204.

On this basis, the through-hole has been seted up to the one end that slip loop bar 502 is close to piston spare 12, and the outside that slip loop bar 502 is close to piston spare 12 is fixed to be cup jointed and is aerifyd inflation formula sealing washer 10, and the inlet end of aerifing inflation formula sealing washer 10 extends to the inside of slip loop bar 502 and fixedly connected with air duct 1001, and air duct 1001 communicates with the inside of fixed sleeve 1204 each other.

Further, in the initial state, the inflatable sealing ring 10 does not contact the inner wall of the cavity 5011, and thus the sliding stem 502 does not receive an additional resistance when displaced relative to the fixed stem 501.

Furthermore, the outer surface of the sliding sleeve rod 502 is provided with a flexible airbag 5021, the inner sides of two ports of the flexible airbag 5021 are both fixed with a sealing ring, the sealing ring near one side of the fixed sleeve rod 501 is fixedly connected with the outer surface of the sliding sleeve rod 502, the sealing ring near one side of the connecting sleeve rod 503 is slidably connected with the outer surface of the sliding sleeve rod 502, the flexible airbag 5021 is initially shaped into an expansion state, and the space inside the flexible airbag 5021 is larger than the distance between the piston member 12 and the end part of the inner wall of the cavity 5011 (the piston member 12 extrudes gas and travels a distance inside the cavity 5011, i.e. the space inside the cavity 5011 is closed at the moment), so that the amount of gas flowing into the anti-blocking module 8 can be increased, in this state, part of gas can exist inside the flexible airbag 5021, the sliding sleeve rod 502502 is also provided with a vent hole positioned inside the flexible airbag 5021, when the flexible airbag 5021 is compressed under stress, the air in the sliding sleeve rod 502 can enter the sliding sleeve rod through the air holes;

according to the above structure, the operation of the above structure will be described by taking the case that the fixed loop bar 501, the sliding loop bar 502 and the connecting loop bar 503 are all extended to the maximum distance as an example:

after the examination of the patient is finished, the medical staff can firstly spray disinfectant (such as medical alcohol commonly seen in hospitals) to the outer sides of the sound-electricity conversion unit 1, the impedance unit 2, the loudspeaker 3 and the telescopic adjusting rod 5, then hold the impedance unit 2 or the sound-electricity conversion unit 1 by hand to apply an extrusion force, at this time, the fixed loop bar 501 can be displaced relative to the sliding loop bar 502, at this time, the piston block i 1201 slides along the inner cavity of the cavity 5011 and gradually approaches to the port of the connecting hose 802, at this time, the gas in the cavity 5011 enters the interior of the annular tube 801 through the connecting hose 802, and then passes through the inclined air hole to blow to the anti-clogging net to achieve the dust cleaning function;

before the relative movement stroke of the fixed sleeve rod 501 and the sliding sleeve rod 502 reaches the maximum value, the linkage shaft 1203 firstly contacts one end of the inner wall of the cavity 5011, at the moment, the linkage shaft 1203 is stressed to move towards the inside of the sliding sleeve rod 502, then the linkage shaft 1203 can drive the piston block II 1202 to move towards the inside of the fixed sleeve 1204, at the moment, gas in the fixed sleeve 1204 is gradually extruded out, in the process, the gas enters the inside of the inflatable sealing ring 10 through the air duct 1001, then the inflatable sealing ring 10 is gradually expanded to be tightly attached to the inner wall of the cavity 5011, so that the cavity 5011 is not communicated with the outside, then, a medical worker presses the opening and closing button 9 to release the limitation of the positioning assembly 7 on the sliding sleeve rod 502, at the moment, the fixed sleeve rod 501 is held by hand to apply extrusion force, then the sliding sleeve rod 502 moves towards the inside of the connecting sleeve rod 503, after the sliding sleeve rod 502 moves to a certain position, the flexible air bag 5021 is blocked by the connecting loop bar 503, the subsequent flexible air bag 5021 is gradually extruded and contracted, and the air in the flexible air bag 502enters the inside of the sliding loop bar 502 through the air holes, so that the anti-blocking net can be supported by more air flows in a single cleaning process, and the cleanliness of the outer surface of the anti-blocking net can be effectively improved.

Here, it should be noted that when the piston block i 1201 slides inside the cavity 5011, the port of the connection hose 802 is located at the front end of the piston block i 1201, so that the gas inside the cavity 5011 can flow to the connection hose 802, after the piston block i 1201 contacts the end of the inner wall of the cavity 5011, the port of the connection hose 802 is located between the piston block i 1201 and the inflatable sealing ring 10, and the inflatable sealing ring 10 separates the cavity 5011 from the outside, so that the gas subsequently introduced through the inside of the sliding sleeve 502 does not leak out from the inside of the cavity 5011, and the gas flow introduced into the inside of the annular tube 801 through the connection hose 802 is relatively stable.

As shown in fig. 5 and 6, the positioning assembly 7 includes a positioning catch plate 701, a connecting shaft 702 and a torsion spring 703, the positioning catch plate 701 penetrates through the limiting plate and extends to the inside of the sliding sleeve rod 502, the connecting shaft 702 is fixedly connected to one end of the positioning catch plate 701, the connecting shaft 702 is rotatably connected to the inside of the connecting sleeve rod 503, the torsion spring 703 is fixedly installed inside the connecting sleeve rod 503, the torsion spring 703 is further fixedly connected to one end of the connecting shaft 702, and the torsion spring 703 is used for driving the rotating positioning catch plate 701 to return.

Further, a stroke groove is arranged in the middle of the sliding loop bar 502 and can be set to be a circular groove, the stroke groove is positioned at the outer side of the positioning clamping plate 701, the positioning clamping plate 701 can rotate in the stroke groove, a plurality of clamping grooves are arranged at one side of the positioning clamping plate 701, a penetrating groove is arranged in the middle of the limiting plate and is in a strip shape, the clamping grooves and the penetrating groove are staggered in an initial state, at the moment, the sliding loop bar 502 can be prevented from sliding relative to the connecting loop bar 503,

as shown in fig. 5 and 6, the triggering mechanism 6 includes a triggering rod 601 and a linkage rod 602, the triggering rod 601 is slidably inserted into the connecting sleeve rod 503, the top end of the triggering rod 601 is fixedly connected with the on-off button 9, the middle part of the triggering rod 601 is fixedly sleeved with a squeezing plate 6011, the bottom end of the squeezing plate 6011 is fixedly connected with an elastic connecting member 11, the elastic connecting member 11 is used for driving the squeezing plate 6011 and the triggering rod 601 to reset, the elastic connecting member 11 is fixedly connected to the inside of the connecting sleeve rod 503, the linkage rod 602 is arranged below the triggering rod 601, the linkage rod 602 is always in contact with the triggering rod 601, and one end of the linkage rod 602 is fixedly connected with one side of the connecting shaft 702.

Specifically, after the patient holds the acoustoelectric conversion unit 1 and is placed at the chest, a medical worker presses the on-off button 9, the on-off button 9 drives the trigger rod 601 to move towards the inside of the connecting sleeve rod 503, the trigger rod 601 extrudes the linkage rod 602, the linkage rod 602 drives the connecting shaft 702 to rotate, the connecting shaft 702 drives the positioning clamping plate 701 to rotate, the positioning clamping plate 701 drives the clamping groove to be flush with the through groove and the stroke groove, the medical worker can pull the connecting sleeve rod 503, the connecting sleeve rod 503 slides relative to the sliding sleeve rod 502, when the sliding sleeve rod 502 moves to a proper position, the medical worker releases the external application force of the on-off button 9, at the moment, the elastic reset piece drives the trigger rod 601 to reset, the trigger rod 601 is far away from the linkage rod 602, the torsion spring 703 also drives the connecting shaft 702 to rotate reversely, the connecting shaft 702 drives the positioning clamping plate 701 to rotate reversely, and the positioning clamping groove 701 is driven to be staggered with the through groove, thereby, the positioning clamping plate 701 is clamped on the outer side of the sliding sleeve rod 502, and the connecting sleeve rod 503 and the sliding sleeve rod 502 are relatively fixed.

The working principle of the invention is as follows: when the heart rate of a patient needs to be checked, a medical worker firstly starts the trigger mechanism 6 by pressing the start-stop button 9, the trigger mechanism 6 drives the positioning assembly 7 to remove the limitation on the telescopic adjusting rod 5, then the patient holds the acoustoelectric conversion unit 1 by hand and pulls the acoustoelectric conversion unit to the chest, and adjusted to the position corresponding to the heart under the direction of the medical staff, at this time, the sound wave of the beating of the patient's heart is transmitted to the loudspeaker 3 through the impedance unit 2, then the sound wave is amplified by the loudspeaker 3, so that the medical staff can listen to the heart rate condition of the patient conveniently, after the use, the piston member 12 is displaced inside the telescopic adjustment rod 5 during the process of housing the telescopic adjustment rod 5, so that the air flow inside the telescopic adjusting lever 5 enters the inside of the ring pipe 801 via the connection hose 802, then the dust is blown into the anti-blocking net through the inclined air holes, so that the dust adhered to the anti-blocking net is blown off.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims (10)

1. A multifunctional stethoscope for preventing contact infection, comprising: the method comprises the following steps:

the device comprises an acoustic-electric conversion unit (1), wherein an impedance unit (2) is arranged above the acoustic-electric conversion unit (1), and a loudspeaker (3) is connected above the impedance unit (2) through a lead;

the electrocardiogram generating module comprises electrode plates (13), an integrated mainboard and a power supply unit, wherein the integrated mainboard is assembled inside the sound-electricity conversion unit (1), two electrode plates (13) are arranged and are arranged on the lower surface of the sound-electricity conversion unit (1) and are electrically connected with the integrated mainboard, and the power supply unit is integrated on the integrated mainboard;

the integrated mainboard is integrated with a wireless communication module, a Bluetooth module, a signal amplification module, a denoising module and a storage module, the wireless communication module is externally connected with a mobile phone end or a cloud server for communication through mobile data, the acoustoelectric conversion unit (1) is connected with a mobile device through the Bluetooth module, the denoising module is used for denoising cardioelectric data, the signal amplification module is used for amplifying signals output by the denoising module, the storage is used for storing the signals output by the amplification module, and finally the signals are transmitted to the mobile phone end or the cloud server through the wireless communication module to generate an electrocardiogram;

the telescopic adjusting rod (5) is of a hollow structure, one end of the telescopic adjusting rod (5) is fixedly provided with a universal joint (4), and one end of the universal joint (4) is fixedly connected with one side of the impedance unit (2);

the trigger mechanism (6), the said trigger mechanism (6) is set up in the inside of the said telescopic regulating lever (5);

the positioning component (7) is assembled inside the telescopic adjusting rod (5), and corresponds to one end of the trigger mechanism (6);

the anti-blocking module (8) is assembled inside the loudspeaker (3), an anti-blocking net is fixedly assembled at the upper end of the loudspeaker (3), the anti-blocking module (8) comprises a ring pipe (801) and a connecting hose (802), the ring pipe (801) is fixed inside the loudspeaker (3) and located below the anti-blocking net, a plurality of inclined air holes facing the anti-blocking net are further formed in the ring pipe (801), the connecting hose (802) is communicated with the inside of the ring pipe (801), and one end of the connecting hose (802) extends to the inside of the telescopic adjusting rod (5);

wherein, the inside of telescopic adjusting rod (5) is provided with piston spare (12), works as when piston spare (12) shift to the direction that is close to coupling hose (802) port department, coupling hose (802) with the inside air current of telescopic adjusting rod (5) leading-in to the inside of annular pipe (801).

2. The multifunctional stethoscope for preventing contact infection according to claim 1, wherein said stethoscope further comprises: the acoustoelectric conversion unit (1) comprises an installation shell, a pickup assembly and an electret vibrating membrane, wherein the installation shell is arranged below the impedance unit (2), the pickup assembly and the electret vibrating membrane are both installed inside the installation shell, a pure gold film is coated on one side of the electret vibrating membrane, the pure gold film is connected with the installation shell, an insulating lining ring is arranged on the other side of the electret vibrating membrane, and the insulating lining ring is arranged between the inner wall of the installation shell and the electret vibrating membrane.

3. The multifunctional stethoscope for preventing contact infection according to claim 1, wherein said stethoscope further comprises: the impedance unit (2) comprises a protective shell, a field effect transistor and a diode, wherein the protective shell is fixed above the acoustic-electric conversion unit (1), the field effect transistor and the diode are both installed inside the protective shell, the field effect transistor comprises a source electrode and a grid electrode, and the diode is arranged between the source electrode and the grid electrode.

4. The multifunctional stethoscope for preventing contact infection according to claim 1, wherein said stethoscope further comprises: telescopic adjusting rod (5) is including fixed loop bar (501), slip loop bar (502) and connecting loop bar (503), fixed loop bar (501) with the one end fixed connection of universal joint (4), slip loop bar (502) slip cap is located the inside of fixed loop bar (501), connecting loop bar (503) slip cap connect in slip loop bar (502) are kept away from the surface of fixed loop bar (501).

5. The multifunctional stethoscope for preventing contact infection according to claim 4, wherein said stethoscope further comprises: a cavity (5011) is formed in the fixed loop bar (501), the cavity (5011) is communicated with the connecting hose (802), the cavity (5011) is sleeved on the outer surface of the piston piece (12) in a sliding mode, and the piston piece (12) is assembled at one end of the sliding loop bar (502);

the ladder groove has been seted up to the inside of connecting loop bar (503), the ladder groove is big-end-up's structure, the inside in ladder groove still slides the cover and is equipped with the limiting plate, the limiting plate with slip loop bar (502) set up to integrated into one piece's structure.

6. The multifunctional stethoscope for preventing contact infection according to claim 5, wherein said stethoscope further comprises: piston spare (12) include piston piece I (1201), piston piece II (1202), universal driving shaft (1203) and fixed sleeve (1204), piston piece I (1201) with the one end fixed connection of slip loop bar (502), piston piece II (1202) slip cap is located the inside of slip loop bar (502), universal driving shaft (1203) fixed connection in the axle center department of piston piece II (1202) one side, and run through slip loop bar (502), fixed sleeve (1204) fixed mounting in the inside of slip loop bar (502), fixed sleeve (1204) still slip cup joint in the surface of piston piece II (1202).

7. The multifunctional stethoscope for preventing contact infection according to claim 6, wherein said stethoscope further comprises: the through-hole has been seted up to the one end that slip loop bar (502) are close to piston spare (12), the outside that slip loop bar (502) are close to piston spare (12) is fixed to be cup jointed and is aerifyd inflation formula sealing washer (10), the inlet end of inflating inflation formula sealing washer (10) extends to the inside and the fixedly connected with air duct (1001) of slip loop bar (502), air duct (1001) with the inside of fixed sleeve (1204) communicates each other.

8. The multifunctional stethoscope for preventing contact infection according to claim 4, wherein said stethoscope further comprises: the surface of slip loop bar (502) is provided with flexible gasbag (5021), the both ends mouth inboard of flexible gasbag (5021) all is fixed with the sealing ring, is close to the sealing ring of fixed loop bar (501) one side is connected with the surface fixed connection of slip loop bar (502), is close to the sealing ring of connecting loop bar (503) one side and the surface sliding connection of slip loop bar (502), flexible gasbag (5021) initial moulding is the inflation state, still set up the bleeder vent that is located flexible gasbag (5021) inboard on slip loop bar (502).

9. The multifunctional stethoscope for preventing contact infection according to claim 4, wherein said stethoscope further comprises: the positioning assembly (7) comprises a positioning clamping plate (701), a connecting shaft (702) and a torsion spring (703), the positioning clamping plate (701) penetrates through a limiting plate and extends to the inside of the sliding loop bar (502), the connecting shaft (702) is fixedly connected to one end of the positioning clamping plate (701), the connecting shaft (702) is rotatably connected to the inside of the connecting loop bar (503), the torsion spring (703) is fixedly installed in the inside of the connecting loop bar (503), and the torsion spring (703) is further fixedly connected to one end of the connecting shaft (702).

10. The multifunctional stethoscope for preventing contact infection according to claim 9, wherein said stethoscope further comprises: trigger mechanism (6) include trigger bar (601) and gangbar (602), trigger bar (601) slide cross-under in the inside of connecting loop bar (503), the fixed stripper plate (6011) that has cup jointed in middle part of trigger bar (601), the bottom fixedly connected with elastic connection spare (11) of stripper plate (6011), elastic connection spare (11) fixed connection in the inside of connecting loop bar (503), gangbar (602) set up the below of trigger bar (601), the one end of gangbar (602) with one side fixed connection of connecting axle (702).

Images