Telescopic stethoscope

Abstract

The embodiment of the utility model discloses a telescopic stethoscope, for example, the telescopic stethoscope comprises ear pieces; one end of the first sound guide tube is communicated with the ear piece; the telescopic device comprises: a housing; the scroll is arranged in the accommodating cavity of the shell, and one end of the second sound guide tube penetrates through the rear shell and is wound on the scroll; a groove is formed in the middle of the reel; the spring is embedded in the groove of the reel, and the spring and the reel are coaxially arranged; the locking teeth are arranged in the containing cavity of the shell, and the locking teeth are connected to the peripheral wall of the reel; the extension lock is arranged on the shell and abuts against the locking teeth; one end of the second sound guide tube penetrates through the rear shell and is communicated with the other end of the first sound guide tube; and the chest piece is communicated with the other end of the second sound guide tube. According to the embodiment of the utility model, the sound induction tube can be accommodated in a telescopic manner, the occupied space is small, and the carrying is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical detection equipment, in particular to a telescopic stethoscope. Background Art

[0002] A stethoscope is a common medical instrument, which is often used to listen to the sounds of the lungs and heart and the internal sounds of the human body as an auxiliary means for diagnosing certain diseases or health conditions. Most stethoscopes include a guide tube with a fixed length for transmitting sound signals from the chest piece of the stethoscope to the earpiece. However, after use, medical staff place the stethoscope on the table, or put the stethoscope into their pockets, or hang it on their bodies. In order to enable the stethoscope to be applied to most occasions, the length of the guide tube is set relatively long. However, this setting results in the guide tube of the stethoscope occupying a large space and being inconvenient to carry. Summary of the Utility Model

[0003] Therefore, in order to solve at least some of the deficiencies and defects of the above prior art, an embodiment of the utility model provides a telescopic stethoscope, which can store the guide tube in a telescopic manner, occupying less space and being convenient to carry.

[0004] The telescopic stethoscope provided by the embodiment of the utility model includes: an earpiece; a first guide tube, one end of which is communicated with the earpiece; a telescopic device, including: a housing, including a front housing and a rear housing, the rear housing is connected to the front housing, and the front housing and the rear housing jointly form a receiving cavity; a reel, arranged in the receiving cavity of the housing and rotatable relative to the housing; a groove is arranged in the middle of the reel; a spring, embedded in the groove of the reel and connected to the reel, the spring is coaxially arranged with the reel, and the reel can also rotate relative to the housing under the drive of the spring; a locking tooth, arranged in the receiving cavity of the housing, and the locking tooth is connected to the outer peripheral wall of the reel; an extension lock, arranged on the housing and abutted against the locking tooth; a second guide tube, one end of the second guide tube passes through the rear housing and is wound on the reel, and one end of the second guide tube is communicated with the other end of the first guide tube; and a chest piece, communicated with the other end of the second guide tube.

[0005] In one embodiment of the present utility model, a first through hole is provided on the housing, and the first through hole communicates with the accommodating cavity; the extension lock includes: a lock top member, which is inserted into the first through hole and can move relative to the front housing; a locking member, which is arranged inside the housing and can swing relative to the front housing; one end of the locking member abuts against one end of the lock top member located inside the front housing, and the other end of the locking member abuts against the locking teeth; and a locking reset member, which is arranged inside the housing, one end of the locking reset member is connected to the locking member, and the other end of the locking reset member contacts the front housing.

[0006] In one embodiment of the present utility model, a first pipe outlet is provided at one end of the front housing, the first pipe outlet communicates with the accommodating cavity, a second pipe outlet is provided at one end of the rear housing, the second pipe outlet communicates with the accommodating cavity, the other end of the first sound guide pipe passes through the first pipe outlet, and one end of the second sound guide pipe passes through the second pipe outlet and communicates with the other end of the first sound guide pipe.

[0007] In one embodiment of the present utility model, a belt clip is provided on one side of the front housing away from the rear housing.

[0008] In one embodiment of the present utility model, the first sound guide pipe further includes: a first sound guide branch pipe, a second sound guide branch pipe, and a third sound guide branch pipe, the earpiece includes a first earpiece and a second earpiece, one ends of the second sound guide branch pipe, the third sound guide branch pipe, and the first sound guide branch pipe are connected to each other, the other end of the first sound guide branch pipe communicates with the second sound guide pipe, the other end of the second sound guide branch pipe communicates with the first earpiece, and the other end of the third sound guide branch pipe communicates with the second earpiece.

[0009] In one embodiment of the present utility model, the retractable stethoscope further includes an elastic steel clip, and opposite ends of the elastic steel clip are respectively connected to the second sound guide branch pipe and the third sound guide branch pipe.

[0010] In one embodiment of the present utility model, the first earpiece includes: a first contact portion, with a first noise reduction chamber provided inside, and a first sound absorption material filled in the first noise reduction chamber; a shock absorption layer, provided inside the first noise reduction chamber; an earpiece seat, fixedly connected to the first contact portion, with a sound guide channel provided inside the earpiece seat; an adapter block, connecting one side of the earpiece seat away from the first contact portion, and the other end of the second sound guide branch pipe communicates with the sound guide channel through the adapter block; and a sound listening cavity film, provided on one side of the shock absorption layer away from the earpiece seat.

[0011] In one embodiment of the present utility model, the retractable stethoscope further includes a noise reduction member, and the noise reduction member includes a noise reduction housing, a noise reduction chamber, and a sound splitting channel: the noise reduction housing includes a first noise reduction housing and a second noise reduction housing; the first noise reduction housing is provided with a first reflection hole, and the second noise reduction housing is provided with a second reflection hole; the second noise reduction housing and the first noise reduction housing jointly enclose the isolated noise reduction chamber and the sound splitting channel, and the noise reduction chamber communicates with the first reflection hole and the second reflection hole; the first sound guiding tube is disposed in the sound splitting channel; and a second sound absorbing material is disposed in the noise reduction chamber.

[0012] In one embodiment of the present utility model, the sound splitting channel includes a main sound splitting channel, a first branch sound splitting channel, and a second branch sound splitting channel. One ends of the main sound splitting channel, the first branch sound splitting channel, and the second branch sound splitting channel communicate with each other. The first sound guiding branch tube is disposed in the main sound splitting channel, the second sound guiding branch tube is disposed in the first branch sound splitting channel, and the third sound guiding branch tube is disposed in the second branch sound splitting channel.

[0013] In one embodiment of the present utility model, the retractable stethoscope further includes: an annular wearing member, the first earpiece and the second earpiece are respectively connected to two ends of the annular wearing member, and an adjusting mechanism for adjusting the diameter of the annular wearing member is provided on the annular wearing member.

[0014] One or more of the above technical solutions have the following advantages or beneficial effects:

[0015] 1) The retractable stethoscope provided by the present utility model can retract the second sound guiding tube in a telescopic manner by providing a telescopic device and through the cooperation of a reel, a spring, a locking tooth, and an extension lock, so that the second sound guiding tube occupies less space and is convenient to carry.

[0016] 2) By providing a belt clip, it is convenient to store the stethoscope, avoiding the stethoscope from falling or being lost during use, and at the same time it is also convenient for medical staff to use when carrying the stethoscope with them.

[0017] 3) By providing a telescopic annular wearing member, the ears of the wearer can be more closely attached to the earpieces.

[0018] 4) By providing a noise reduction member and / or a shock absorption and noise reduction structure in the earpiece, the auscultation sound can be purified, and the external environmental noise can be reduced by weakening or eliminating the background noise or noise, improving the sensitivity of the stethoscope, improving the signal quality and accuracy of the stethoscope, and facilitating medical staff to more accurately diagnose the patient's condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solution of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a partial exploded structural schematic diagram of a telescopic stethoscope provided by an embodiment of the present utility model.

[0021] Figure 2 It is another partial exploded structural schematic diagram of a telescopic stethoscope provided by an embodiment of the present utility model.

[0022] Figure 3 For Figure 2 Another structural schematic diagram of the telescopic stethoscope shown.

[0023] Figure 4 For Figure 2 A structural schematic diagram of the telescopic device shown.

[0024] Figure 5 For Figure 4 A cross-sectional structural schematic diagram of the A-A section in

[0025] Figure 6 For Figure 2 A structural schematic diagram of the first earpiece of

[0026] Figure 7 For Figure 2 An exploded structural schematic diagram of the noise reduction component shown.

[0027] Main element numbers:

[0028] 100: Telescopic device; 120: Housing; 121: Front housing; 1211: First pipeline outlet; 1212: First through hole; 122: Rear housing; 1221: Second pipeline outlet; 130: Reel; 140: Locking teeth; 150: Spring; 160: Extension lock; 161: Lock top component; 162: Locking component; 163: Locking reset piece; 210: First sound guide tube; 211: First sound guide branch tube; 212: Second sound guide branch tube; 213: Third sound guide branch tube; 220: Second sound guide tube; 230: Elastic steel clip; 240: Adapter block; 300: Chest piece; 400: Ear piece; 401: First ear piece; 4011: First contact part; 4012: Shock absorption layer; 4013: Ear piece seat; 4014: Sound listening cavity membrane; 4015: First noise reduction chamber; 4016: Sound guide channel; 402: Second ear piece; 410: Ring-shaped wearing piece; 430: Noise reduction piece; 431: Noise reduction housing; 4311: First noise reduction housing; 4312: Second noise reduction housing; 4331: First reflection hole; 4332: Second reflection hole; 432: Sound splitting channel; 4321: Main sound splitting channel; 4322: First branch sound splitting channel; 4323: Second branch sound splitting channel; 433: Noise reduction chamber. Detailed implementation manner

[0029] The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figure 1As shown, a retractable stethoscope provided by an embodiment of the present utility model includes, for example: an earpiece 400, a first sound guide tube 210, a second sound guide tube 220, a retractable device 100, and a chest piece 300. The earpiece 400 is made of a flexible material such as silicone or rubber, for example, and is used to be placed at the ear of a medical staff to transmit auscultation signals. The first sound guide tube 210 and the second sound guide tube 220 are used to conduct sound signals. Specifically, one end of the first sound guide tube 210 is communicated with the earpiece 400. Furthermore, the retractable device 100 is used to store the sound guide tube in a retractable manner. Specifically, the retractable device 100 includes, for example: a housing 120, a reel 130, a spring 150, an extension lock 160, and a locking tooth 140. Among them, the housing 120 is made of plastic, such as polypropylene or polycarbonate, for example. The housing 120 includes a front housing 121 and a rear housing 122. The rear housing 122 is connected to the front housing 121, and the front housing 121 and the rear housing 122 jointly form a receiving cavity. The reel 130 is a reel 130 made of a medical-grade alloy material, for example, and is arranged in the receiving cavity of the housing 120 and can rotate relative to the housing 120. One end of the second sound guide tube 220 passes through the rear housing 122 and is wound around the reel 130, and one end of the second sound guide tube 220 is communicated with the other end of the first sound guide tube 210. A groove 131 is provided in the middle of the reel 130. The spring 150 is a component made of spring steel or the like, such as a coil spring, for example. It can store and release energy through elastic deformation and is used to keep the tension of the second sound guide tube 220 constant. The spring 150 is embedded in the groove 131 of the reel 130 and is connected to the reel 130. The spring 150 is coaxially arranged with the reel 130, and the reel 130 can also rotate relative to the housing 120 under the drive of the spring 150. The locking tooth 140 is a locking tooth 140 made of a metal material, such as stainless steel or copper alloy, for example. The number and spacing of the locking teeth 140 are usually set according to the need to fix the sound guide tube. The locking tooth 140 is arranged in the receiving cavity of the housing 120, and the locking tooth 140 is connected to the outer peripheral wall of the reel 130; the extension lock 160 is made of a metal material, for example, and is used to control the movement of the reel 130 so as to fix the position of the second sound guide tube 220. The extension lock 160 is arranged on the housing 120 and abuts against the locking tooth 140. The second sound guide tube 220 is used to transmit auscultation signals, for example. One end of the second sound guide tube 220 passes through the rear housing 122 and is communicated with the other end of the first sound guide tube 210; and the chest piece 300 is communicated with the other end of the second sound guide tube 220, for example.

[0031] In the embodiment of the present utility model, a spring 150, a reel 130, and an extension lock 160 are arranged inside the housing 120, a locking tooth 140 is arranged on the reel 130, and one end of the second sound guide tube 220 passes through the rear housing 122 and is wound around the reel 130 and communicates with the other end of the first sound guide tube 210. When a medical staff uses the retractable stethoscope, the hand of the medical staff can hold the other end of the second sound guide tube 220 and pull it to one side, that is, pull it in the direction away from the earpiece 400. At this time, the reel 130 will rotate, and the reel 130 will drive the spring 150 to rotate, thereby driving the second sound guide tube 220 to continue to stretch and extend for use. The spring 150 is stretched, so as to store a certain amount of elastic energy. When the second sound guide tube 220 extends to the required position, the extension lock 160 can be controlled to engage with the locking tooth 140, and the extension lock 160 will interact with the locking tooth 140 on the reel 130, so as to fix the reel 130 at the required position to maintain the tension of the sound guide tube and fix the extended position of the sound guide tube. When recycling after use, the extension lock 160 can be controlled to disengage from the locking tooth 140. After the extension lock 160 disengages from the locking tooth 140, the extension lock 160 no longer interacts with the locking tooth 140 on the reel 130, and the spring 150 releases the stored elastic energy, thereby driving the reel 130 to rotate and winding the second sound guide tube 220 back into the housing 120, thus realizing the storage of the second sound guide tube 220. A retractable stethoscope provided by the present utility model can store the second sound guide tube 220 in a retractable manner by arranging a retractable device 100 and through the cooperation of the reel 130, the spring 150, the locking tooth 140, and the extension lock 160, so that the second sound guide tube 220 occupies less space and is convenient to carry.

[0032] More specifically, as Figure 1 shown, more specifically, one end of the front housing 121 is provided with a first pipe outlet 1211, and the first pipe outlet 1211 communicates with the accommodation cavity; one end of the rear housing 122 is provided with a second pipe outlet 1221, and the second pipe outlet 1221 communicates with the accommodation cavity. Specifically, the other end of the first sound guide tube 210 passes through the first pipe outlet 1211, and the one end of the second sound guide tube 220 passes through the second pipe outlet 1221 and communicates with the other end of the first sound guide tube 210.

[0033] As Figure 2 and Figure 5As shown, more specifically, a first through hole 1212 is provided on the housing 120. The first through hole 1212 is disposed adjacent to the first pipe outlet 1211, and the first through hole 1212 communicates with the accommodation cavity. The extension lock 160 includes: a lock top member 161, a locking member 162, and a locking return member 163. The lock top member 161 is, for example, a button or a knob, and is used to control the rotation and locking state of the reel 130. The lock top member 161 is inserted into the first through hole 1212 and is movable relative to the front housing 121. The locking member 162 is, for example, a swing arm, and is used to cooperate with the lock top member 161, the locking return member 163, and the locking teeth 140 to realize the rotation and locking of the reel 130. The locking member 162 is disposed inside the housing 120 and is swingable relative to the front housing 121. One end of the locking member 162 abuts against one end of the lock top member 161 located inside the front housing 121, and the other end of the locking member 162 abuts against the locking teeth 140. Specifically, the other end of the locking member 162 abuts between two adjacent locking teeth 140. The locking return member 163 is, for example, a torsion spring, and is used to cooperate with the lock top member 161, the locking member 162, and the locking teeth 140 to realize the rotation and locking of the reel 130. The locking return member 163 is disposed inside the housing 120. One end of the locking return member 163 is connected to the locking member 162, and the other end of the locking return member 163 contacts the front housing 121. When it is necessary to fix the position of the sound guide tube, the lock top member 161 is rotated or pressed, so that the locking member 162 rotates in the direction of the locking return member 163, enabling the locking teeth 140 to interact with the locking return member 163, and the spring 150 between the locking member 162 and the locking return member 163 is compressed. At this time, the reel 130 is in a locked state, and thus the second sound guide tube 220 is fixed. When it is necessary to unlock the sound guide tube, only the lock top member 161 needs to be unlocked, and the locking member 162 rotates in the opposite direction, causing the locking teeth 140 to disengage from the locking return member 163, and the second sound guide tube 220 can then be retracted into the reel 130. In the embodiment of the present utility model, by providing the extension lock 160 and through the cooperation of the lock top member 161, the locking member 162, the locking return member 163, and the locking teeth 140, specifically, when the lock top member 161 is rotated or pressed, the locking teeth 140 will interact with the locking member 162 and the locking return member 163, thereby fixing the reel 130 at the desired position to achieve the engagement of the extension lock 160 and control the rotation and locking state of the reel 130.

[0034] As Figure 2 and Figure 4As shown, more specifically, a belt clip 110 is provided on one side of the front housing 121 away from the rear housing 122. The belt clip 110 is made of, for example, plastic or metal materials. The belt clip 110 is used to clip it on clothes or in a pocket, facilitating carrying and use, convenient for storing and collecting the stethoscope, preventing the stethoscope from dropping or being lost during use, and at the same time facilitating the use by medical staff when carrying the stethoscope with them.

[0035] As Figure 2 and Figure 3 As shown, more specifically, the first sound guide tube 210 further includes: a first sound guide branch tube 211, a second sound guide branch tube 212, and a third sound guide branch tube 213. The earpiece 400 includes a first earpiece 401 and a second earpiece 402. One ends of the second sound guide branch tube 212, the third sound guide branch tube 213, and the first sound guide branch tube 211 are connected to each other. The second sound guide branch tube 212, the third sound guide branch tube 213, and the first sound guide branch tube 211 are connected to form a Y-shaped structure. The other end of the first sound guide branch tube 211 communicates with the second sound guide tube 220. The other end of the second sound guide branch tube 212 communicates with the first earpiece 401. The other end of the third sound guide branch tube 213 communicates with the second earpiece 402. The first sound guide branch tube 211, the second sound guide branch tube 212, and the third sound guide branch tube 213 are used to transmit the sound signal of the stethoscope from the first sound guide tube 210 to the ears of the medical staff.

[0036] As Figure 2 and Figure 3 As shown, the retractable stethoscope further includes: an annular wearing member 410. The first earpiece 401 and the second earpiece 402 are respectively connected to both ends of the annular wearing member 410, and an adjusting mechanism for adjusting the diameter of the annular wearing member is provided on the annular wearing member 410. The retractable annular wearing member 410 is used to make the ears of the wearer fit better with the earpiece 400. Specifically, the adjusting mechanism can be, for example, an elastic member and a telescopic adjusting mechanism.

[0037] As Figure 2 and Figure 6 As shown, more specifically, the retractable stethoscope further includes an elastic steel clip 230. Opposite ends of the elastic steel clip 230 are respectively connected to the second sound guide branch tube 212 and the third sound guide branch tube 213. The elastic steel clip 230 is made of, for example, stainless steel or aluminum alloy and other materials. The elastic steel clip 230 is used to fixedly connect the second sound guide branch tube 212 and the third sound guide branch tube 213, making them stable and firm, not loose or falling off, so as to ensure that the stethoscope can work properly during use, and at the same time prevent the sound guide branch tubes from being fatigued and deformed or damaged due to excessive telescoping during use, extending the service life of the stethoscope.

[0038] AsFigure 2 and Figure 6 As shown in Figure 6 , the first earpiece 401 includes: a first contact portion 4011, a shock-absorbing layer 4012, an earpiece base 4013, an adapter block 240, and a sound-receiving cavity membrane 4014. The first contact portion 4011 is used to contact the human ear and transmit sound signals. A first noise reduction chamber 4015 is provided inside the first contact portion 4011. The first noise reduction chamber 4015 is filled with a first sound-absorbing material, such as porous rubber, which is used to absorb the noise signals entering the stethoscope and avoid interference of the noise signals with the stethoscope. The shock-absorbing layer 4012 is, for example, a shock-absorbing layer 4012 made of elastic rubber or resin material. The shock-absorbing layer 4012 is provided inside the first noise reduction chamber 4015 and is used to prevent the sound generated by small vibrations caused by friction during the wearing and use by medical staff, which is beneficial to achieving noise reduction and sound insulation. The earpiece base 4013 is fixedly connected to the first contact portion 4011 and is used to ensure the structural stability and sealing of the stethoscope. A sound guide channel 4016 is provided inside the earpiece base 4013, and the sound guide channel 4016 can guide the auscultation signal from the sound guide branch pipe into the contact portion. Among them, the first contact portion 4011 and the earpiece base 4013 are usually made of soft and durable silicone or polyurethane materials, which have good biocompatibility and softness, can ensure that the stethoscope fits comfortably on the human ear, and will not cause allergies or discomfort. The adapter block 240 is, for example, made of elastic rubber or resin material. The adapter block 240 is connected to the side of the earpiece base 4013 away from the first contact portion 4011. The other end of the second sound guide branch pipe 212 is connected to the sound guide channel 4016 through the adapter block 240. The adapter block 240 is used to connect the second sound guide branch pipe 212 and the third sound guide branch pipe 213 to the sound guide channel 4016 so that the auscultation signal can be transmitted from the sound guide branch pipe to the earpiece 400. The sound-receiving cavity membrane 4014 is, for example, made of a soft and thin material and can respond quickly and accurately to the sound wave signal. The sound-receiving cavity membrane 4014 is provided on the inner side of the shock-absorbing layer 4012 away from the earpiece base 4013 and is used to receive sound waves.

[0039] As Figure 2 and Figure 7As shown, more specifically, the retractable stethoscope further includes a noise reduction component 430, and the noise reduction component 430 includes a noise reduction housing 431, a noise reduction chamber 433, and a sound splitting channel 432. The noise reduction housing 431 includes, for example, a first noise reduction housing 4311 and a second noise reduction housing 4312. The first noise reduction housing 4311 and the second noise reduction housing 4312 are, for example, made of high-strength plastic or metal materials, such as polycarbonate, polyimide, aluminum alloy, etc., which can ensure the structural stability and service life of the noise reduction component 430. The first noise reduction housing 4311 is provided with a first reflection hole 4331. The second noise reduction housing 4312 is provided with a second reflection hole 4332. The first reflection hole 4331 and the second reflection hole 4332 are oppositely arranged and are used to enable part of the vibration energy to be transmitted outward in the form of waves after the internal porous rubber absorbs the vibration, avoiding secondary vibration caused by mutual reflection of the closed structure, thereby further improving the sensitivity of the stethoscope. The second noise reduction housing 4312 and the first noise reduction housing 4311 jointly enclose a separated noise reduction chamber 433 and a sound splitting channel 432. The sound splitting channel 432 is used to introduce signals of different frequencies into different sound guiding branch pipes respectively, so as to realize the separation and processing of signals. The noise reduction chamber 433 communicates with the first reflection hole 4331 and the second reflection hole 4332. The first sound guiding pipe 210 is arranged in the sound splitting channel 432; a second sound absorbing material is arranged in the noise reduction chamber 433; it is worth mentioning here that the second sound absorbing material in this embodiment is, for example, made of porous rubber and is used to absorb the noise signals entering the stethoscope and avoid the interference of the noise signals on the stethoscope.

[0040] Further, as Figure 7 shown, more specifically, the sound splitting channel 432 includes a main sound splitting channel 4321, a first branch sound splitting channel 4322, and a second branch sound splitting channel 4323. One ends of the main sound splitting channel 4321, the first branch sound splitting channel 4322, and the second branch sound splitting channel 4323 are communicated with each other. The first sound guiding branch pipe 211 is arranged in the main sound splitting channel 4321, the second sound guiding branch pipe 212 is arranged in the first branch sound splitting channel 4322, and the third sound guiding branch pipe 213 is arranged in the second branch sound splitting channel 4323. By providing the noise reduction component 430 in the embodiment of the present invention, a sound splitting channel 432 and a noise reduction chamber 433 are arranged in the noise reduction component 430, and a first reflection hole 4331 and a second reflection hole 4332 are arranged on the noise reduction chamber 433 to reduce the influence of external environmental noise on the stethoscope, improve the sensitivity of the stethoscope, reduce or lower the vibration generated during sound splitting and the vibration influence of external noise, improve the signal quality and accuracy of the stethoscope, and facilitate medical staff to diagnose the patient's condition more accurately.

[0041] In the embodiment of the present utility model, medical staff wear the earpiece 400, adjust the earpiece 400 to the most comfortable position through the annular wearing member 410, and through the telescopic device 100, when the medical staff uses the telescopic stethoscope, the hand of the medical staff can hold the other end of the second sound guide tube 220 and pull it to one side, that is, pull it in the direction away from the earpiece 400. When the second sound guide tube 220 extends to the required position, the extension lock 160 can be manipulated to engage with the locking tooth 140 to fix the scroll 130 at the required position. Then the medical staff holds the chest piece 300 and fits it on the stethoscope part required by the patient. The sound wave is conducted to the first sound guide tube 210 after passing through the second sound guide tube 220. At this time, the noise reduction member 430 absorbs the irregular vibrations generated when the first sound guide branch tube 211, the second sound guide branch tube 212, and the third sound guide branch tube 213 of the fixed installation divide the sound wave, eliminates the vibration noise of this part and continues to transmit the sound signal of the stethoscope to the earpiece 400. The shock-absorbing layer 4012 made of porous rubber weakens the friction noise between the human ear and the first contact part 4011, and then can purify the stethoscope sound and weaken or eliminate the noise or noise; when recycling after use, the extension lock 160 can be manipulated to disengage from the locking tooth 140. When the extension lock 160 disengages from the locking tooth 140, the extension lock 160 no longer interacts with the locking tooth 140 on the scroll 130, and the spring 150 releases the stored elastic energy, thereby driving the scroll 130 to rotate and winding and retracting the second sound guide tube 220 into the housing 120, thus realizing the storage of the second sound guide tube 220.

[0042] In addition, it can be understood that the foregoing embodiments are only exemplary descriptions of the present utility model. On the premise that the technical features do not conflict, are fixed without contradiction, and do not violate the utility model purpose of the present utility model, the technical solutions of each embodiment can be arbitrarily combined and used in combination.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present utility model.

Claims

1. A telescopic stethoscope, characterized in that, Comprising: Earpiece; A first sound guiding tube, one end of which communicates with the earpiece; A telescopic device, comprising: A housing, including a front housing and a rear housing, the rear housing connecting the front housing, and the front housing and the rear housing jointly forming a receiving cavity; A reel, disposed in the receiving cavity of the housing and rotatable relative to the housing; a groove is provided in the middle of the reel; A spring, embedded in the groove of the reel and connected to the reel, the spring being coaxially disposed with the reel, and the reel being further rotatable relative to the housing under the drive of the spring; Locking teeth, disposed in the receiving cavity of the housing, the locking teeth being connected to the outer peripheral wall of the reel; An extension lock, disposed on the housing and abutted against the locking teeth; A second sound guiding tube, one end of the second sound guiding tube passing through the rear housing and wound around the reel, and one end of the second sound guiding tube communicating with the other end of the first sound guiding tube; and A chest piece, communicating with the other end of the second sound guiding tube.

2. The retractable stethoscope according to claim 1, wherein A first through hole is provided on the housing, and the first through hole communicates with the receiving cavity; the extension lock includes: A lock top member, passing through the first through hole and movable relative to the front housing; A locking member, disposed in the housing and swingable relative to the front housing; one end of the locking member abuts against one end of the lock top member located inside the front housing, and the other end of the locking member abuts against the locking teeth; and A locking reset member, disposed inside the housing, one end of the locking reset member connecting the locking member, and the other end of the locking reset member contacting the front housing.

3. The retractable stethoscope according to claim 1, characterized in that, One end of the front housing is provided with a first pipeline outlet, the first pipeline outlet communicating with the receiving cavity, one end of the rear housing is provided with a second pipeline outlet, the second pipeline outlet communicating with the receiving cavity, the other end of the first sound guiding tube passing through the first pipeline outlet, and one end of the second sound guiding tube passing through the second pipeline outlet and communicating with the other end of the first sound guiding tube.

4. The retractable stethoscope according to claim 1, wherein, A belt clip is provided on one side of the front housing away from the rear housing.

5. The retractable stethoscope according to claim 1, wherein, The first sound guiding tube further includes: a first sound guiding branch tube, a second sound guiding branch tube and a third sound guiding branch tube, the earpiece includes a first earpiece and a second earpiece, one ends of the second sound guiding branch tube, the third sound guiding branch tube and the first sound guiding branch tube are connected to each other, the other end of the first sound guiding branch tube communicates with the second sound guiding tube, the other end of the second sound guiding branch tube communicates with the first earpiece, and the other end of the third sound guiding branch tube communicates with the second earpiece.

6. The retractable stethoscope according to claim 5, wherein The telescopic stethoscope further includes an elastic steel clip, and opposite ends of the elastic steel clip are respectively connected to the second sound guiding branch tube and the third sound guiding branch tube.

7. The retractable stethoscope according to claim 5, wherein, The first earpiece includes: A first contact portion, internally provided with a first noise reduction chamber, and the first noise reduction chamber is filled with a first sound absorbing material; A shock absorption layer, disposed inside the first noise reduction chamber; An earpiece seat, fixedly connecting the first contact portion, and a sound guiding channel is provided in the earpiece seat; an adapter block connected to a side of the earpiece seat away from the first contact portion, wherein the other end of the second sound guide branch is connected to the sound guide channel through the adapter block; and The sound-hearing cavity membrane is arranged on a side of the inner side of the shock-absorbing layer away from the earpiece seat.

8. The retractable stethoscope according to claim 5, wherein, The retractable stethoscope further comprises a noise reduction component, which comprises a noise reduction housing, a noise reduction cabin and a sound separation channel: The noise reduction shell includes a first noise reduction shell and a second noise reduction shell; the first noise reduction shell is provided with a first reflection hole, and the second noise reduction shell is provided with a second reflection hole; the second noise reduction shell and the first noise reduction shell together form the isolated noise reduction cabin and the sound separation channel, and the noise reduction cabin is connected to the first reflection hole and the second reflection hole; the first sound guide tube is penetrated in the sound separation channel; and a second sound-absorbing material is provided in the noise reduction cabin.

9. The retractable stethoscope according to claim 8, wherein, The sound channel includes a main sound channel, a first branch sound channel and a second branch sound channel. One end of each of the main sound channel, the first branch sound channel and the second branch sound channel is connected to each other. The first sound guide branch pipe is arranged in the main sound channel, the second sound guide branch pipe is arranged in the first branch sound channel, and the third sound guide branch pipe is arranged in the second branch sound channel.

10. The retractable stethoscope according to claim 5, wherein, The retractable stethoscope further comprises: an annular wearing piece, the first ear piece and the second ear piece are respectively connected to two ends of the annular wearing piece, and the annular wearing piece is provided with an adjustment mechanism for adjusting the diameter of the annular wearing piece.

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