Novel stethoscope for preliminary diagnosis in department of cardiology

Abstract

The invention discloses a novel stethoscope for preliminary diagnosis in the department of cardiology, and relates to the technical field of stethoscopes, the novel stethoscope comprises a three-way pipe, the bottom end of the three-way pipe is fixedly communicated with an L-shaped protective pipe shell, and a first communicating pipe and a second communicating pipe are arranged under the three-way pipe; the top end of the first communicating pipe and the top end of the second communicating pipe communicate with the interior of the L-shaped protective pipe shell. According to the stethoscope, the channel switching assembly is arranged in the L-shaped protective tube shell, the pressing assembly is used for driving the channel switching assembly to move, the communication state between the three-way tube and the first communicating tube and the communication state between the three-way tube and the second communicating tube can be conveniently switched, and the stethoscope can rapidly switch the flat stethoscope head and the bell-shaped stethoscope head; according to the stethoscope, high-tone noise and low-tone noise can be auscultated rapidly, different auscultation heads or stethoscopes with different auscultation heads do not need to be replaced, the auscultation process of a cardiology physician is convenient, and the auscultation efficiency of the physician can be effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of stethoscope technology, specifically relating to a novel stethoscope for preliminary diagnosis in cardiology. Background Technology

[0002] The stethoscope is an instrument frequently used in cardiology for auscultation of the heart. It mainly consists of three parts: the stethoscope head, the sound tube, and the ear tube. The stethoscope is a symbol of physicians, and modern medicine began with the invention of the stethoscope. The main function of the stethoscope is to collect and amplify the sounds emitted from the heart, lungs, arteries, veins, and other internal organs as an auxiliary diagnostic tool, making diagnoses by listening to sound signals.

[0003] When cardiologists use a stethoscope to make a complete diagnosis of a patient, they usually need to monitor low-frequency and high-frequency sounds associated with the heart. By monitoring the alternation between low-frequency and high-frequency sounds relative to the heart, doctors can make an accurate preliminary judgment on heart conditions. However, the stethoscopes currently in use are single-head stethoscopes. When listening to low-frequency and high-frequency sounds of the heart, doctors need to change to different stethoscope heads or stethoscopes with different stethoscope heads, which makes the auscultation process for cardiologists quite cumbersome and greatly reduces the efficiency of auscultation.

[0004] To address these issues, we have developed a novel stethoscope for preliminary diagnosis in cardiology. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a novel stethoscope for preliminary diagnosis in cardiology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a novel stethoscope for preliminary diagnosis in cardiology, comprising a three-way tube, the bottom end of which is fixedly connected to an L-shaped protective shell; a connecting tube one and a connecting tube two are disposed directly below the three-way tube; the top ends of both connecting tube one and connecting tube two are connected to the interior of the L-shaped protective shell; a channel conversion assembly is disposed inside the L-shaped protective shell; the channel conversion assembly includes a movable plate slidably connected to the inner wall of the L-shaped protective shell; a sealing piston column is disposed on the left side of the movable plate; the movable plate and the sealing piston column are connected by two connecting columns; an air passage is provided inside the sealing piston column; a pressing assembly is installed on the right side of the movable plate; the pressing assembly includes a pressing rod fixedly connected to the right side of the movable plate; the outer surface of the movable plate and the inner wall of the L-shaped protective shell are connected. Two limiting components are installed between the L-shaped protective tube shell and the T-shaped protective tube shell. The limiting components include a sliding groove and a limiting slot on the inner wall of the L-shaped protective tube shell. The left end of the sliding groove is connected to the inside of the limiting slot. A reset component is installed on the outer surface of the L-shaped protective tube shell. The reset component includes a rotating ring fitted on the outer surface of the L-shaped protective tube shell and two arc-shaped grooves on the outer surface of the L-shaped protective tube shell. The bottom ends of the first and second connecting tubes are fixedly connected to long rubber tubes. The outer surfaces of the two long rubber tubes are wrapped with protective sleeves. The bottom ends of the two long rubber tubes are respectively equipped with a flat earpiece and a bell earpiece. The two ends of the T-shaped protective tube shell away from the L-shaped protective tube shell are connected to short rubber tubes. The top ends of the two short rubber tubes are connected to earrings. The top ends of the two earrings are equipped with silicone earplugs. An adjustable ear spring assembly is installed between the two earrings.

[0007] Furthermore, the right end of the pressing rod penetrates the inner wall of the L-shaped protective tube shell and extends to the outside of the L-shaped protective tube shell, and a pressing plate is fixedly connected to the right end of the pressing rod.

[0008] Furthermore, the pressing assembly also includes two tension springs fixedly connected to the right side of the movable plate, and the right ends of the two tension springs are fixedly connected to the inner wall of the L-shaped protective tube shell.

[0009] Furthermore, the limiting component also includes a cavity formed inside the movable plate, with a connecting plate slidably connected to the inner wall of the cavity, and a limiting post installed on the outer surface of the connecting plate.

[0010] Furthermore, the end of the limiting post away from the connecting plate penetrates the inner wall of the cavity and extends into the interior of the slide groove, and the outer surface of the limiting post and the penetration point of the inner wall of the slide groove are slidably connected. A spring is installed between the side of the connecting plate away from the limiting post and the inner wall of the cavity.

[0011] Furthermore, two extrusion blocks are installed on the inner wall of the rotating ring, and the two extrusion blocks are slidably connected to the inner walls of the two arc-shaped grooves respectively.

[0012] Furthermore, the reset assembly also includes two arc-shaped guide rails fixedly connected to the outer surface of the L-shaped protective tube shell. The inner walls of the two arc-shaped guide rails are slidably connected with guide blocks, and the guide blocks are connected to the rotating ring.

[0013] Furthermore, positioning posts are installed on the outer surface of the guide block and the inner wall of the arc-shaped guide rail. A second spring is installed inside the arc-shaped guide rail, and the two ends of the second spring are respectively engaged with the outer surfaces of the two positioning posts.

[0014] Furthermore, the adjustable ear spring assembly includes two sleeves, which are respectively fitted onto the outer surfaces of the two earrings, and the inner walls of the sleeves slide in contact with the outer surfaces of the earrings. An ear spring is fixedly connected between the two sleeves, and a limit bolt is threaded onto the outer surfaces of both sleeves. A rotating block is installed at the ends of the two limit bolts that are far apart from each other.

[0015] Furthermore, a pair of cushioning sponge sleeves are symmetrically fixed to the tail end of the tension spring. The two cushioning sponge sleeves are fixed together with adhesive. Several blocking blocks are fixedly installed on the inner wall of the cushioning sponge sleeves from top to bottom. The blocks are distributed on the inner wall of the cushioning sponge sleeves in a semi-spiral structure. The spiral direction of the structure matches the spiral direction of the tension spring. The cross-section of the blocking blocks is trapezoidal. The upper interior angle of the trapezoidal cross-section of the blocks from top to bottom is set at equal intervals, with the spacing value ranging from 10° to 30°. The spacing between the blocks matches the spacing of the spiral of the tension spring.

[0016] The beneficial effects of this invention are:

[0017] 1. This invention, by setting a channel conversion component inside the L-shaped protective tube shell, and using a pressing component to drive the channel conversion component to move, can easily switch the connection state between the three-way tube and connecting tube one and connecting tube two. This allows the stethoscope to quickly switch between flat and bell-shaped stethoscopes, and can quickly auscultate high-pitched and low-pitched noises without the need to change different stethoscopes or stethoscopes with different stethoscopes. This makes the auscultation process more convenient for cardiologists and can effectively improve the efficiency of doctors' auscultation.

[0018] 2. This invention utilizes the coordinated arrangement of a three-way tube, an L-shaped protective shell, a first connecting tube, a second connecting tube, a channel conversion component, a pressing component, a limiting component, and a reset component. The limiting component can limit the channel conversion component, ensuring the connection between the L-shaped protective shell and the second connecting tube. The reset component and the pressing component can easily reset the channel conversion component, allowing the L-shaped protective shell to reconnect with the first connecting tube. This enables the stethoscope head of the stethoscope to be switched freely, making it convenient to use. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the stethoscope of the present invention;

[0020] Figure 2 This is a schematic diagram of the connection structure between the tee pipe and the L-shaped protective casing in this invention;

[0021] Figure 3 This is a schematic diagram of the structure of the tee and the connecting pipe when they are connected in this invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the movable plate in this invention;

[0023] Figure 5 This is a schematic diagram of the structure of the three-way pipe and the connecting pipe in this invention when they are connected.

[0024] Figure 6 This is a schematic diagram of the reset assembly in the two-way connection state of the three-way pipe and the connecting pipe in this invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the arc-shaped guide rail in this invention;

[0026] Figure 8 This is a three-dimensional structural diagram of the adjustable ear spring assembly in this invention;

[0027] Figure 9 This is a three-dimensional structural diagram of the tension spring and buffer foam sleeve in this invention;

[0028] Figure 10 This is a three-dimensional structural diagram of the cushioning sponge sleeve in this invention;

[0029] Figure 11 This is a partial cross-sectional structural diagram of the cushioning sponge sleeve in this invention;

[0030] Figure 12 This is a photograph of an embodiment of the present invention.

[0031] In the diagram: 1. T-joint; 2. L-shaped protective casing; 3. Connecting pipe one; 4. Connecting pipe two; 5. Channel conversion assembly; 51. Moving plate; 52. Sealing piston post; 53. Connecting post; 54. Vent duct; 6. Pressing assembly; 61. Pressing rod; 62. Pressing plate; 63. Tension spring; 7. Limiting assembly; 71. Slide groove; 72. Limiting groove; 73. Cavity; 74. Connecting plate; 75. Limiting post; 76. Spring one; 8. Reset assembly; 81. 82. Rotary ring; 83. Arc groove; 84. Extrusion block; 85. Arc guide rail; 86. Guide block; 87. Positioning post; 88. Spring II; 9. Long rubber tube; 10. Protective sleeve; 11. Flat earpiece; 12. Bell-shaped earpiece; 13. Short rubber tube; 14. Earring; 15. Silicone earplug; 16. Adjustable ear spring assembly; 16a. Sleeve; 16b. Ear spring; 16c. Limiting bolt; 16d. Rotating block; 17. Buffer foam sleeve; 18. Stopping block. Detailed Implementation

[0032] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0034] like Figure 1-3As shown, a novel stethoscope for preliminary diagnosis in cardiology includes a three-way tube 1. The bottom end of the three-way tube 1 is fixedly connected to an L-shaped protective shell 2. Directly below the three-way tube 1 are two connecting tubes 3 and 4. The top ends of both connecting tubes 3 and 4 are connected to the interior of the L-shaped protective shell 2. Inside the L-shaped protective shell 2 is a channel conversion assembly 5, which includes a movable plate 51 slidably connected to the inner wall of the L-shaped protective shell 2. A sealing piston column 52 is located on the left side of the movable plate 51. The movable plate 51 and the sealing piston column 52 are connected by two symmetrical connecting columns 53. An air passage 54 is provided inside the sealing piston column 52. A pressing assembly 6 is installed on the right side of the movable plate 51. The pressing assembly 6 includes a pressing rod 61 fixedly connected to the right side of the movable plate 51. The right end of the rod 61 penetrates the inner wall of the L-shaped protective tube shell 2 and extends to the outside of the L-shaped protective tube shell 2. The right end of the pressing rod 61 is fixedly connected to the pressing plate 62. The pressing assembly 6 also includes two symmetrical tension springs 63 fixedly connected to the right side of the moving plate 51. The right ends of the two tension springs 63 are fixedly connected to the inner wall of the L-shaped protective tube shell 2. The bottom ends of the connecting tube 1 3 and the connecting tube 2 4 are fixedly connected to long rubber tubes 9. The outer surfaces of the two long rubber tubes 9 are wrapped with protective sleeves 10. The bottom ends of the two long rubber tubes 9 are respectively installed with flat earpieces 11 and bell-shaped earpieces 12. The two ends of the three-way tube 1 away from the L-shaped protective tube shell 2 are connected to short rubber tubes 13. The top ends of the two short rubber tubes 13 are connected to earrings 14. The top ends of the two earrings 14 are each equipped with silicone earplugs 15. An adjustable ear spring assembly 16 is installed between the two earrings 14.

[0035] In this embodiment, the three-way tube 1, L-shaped protective shell 2, connecting tube one 3, connecting tube two 4, and the two earrings 14 are all preferably made of heavy metal materials. The material plays an important role in the sound effect. The transmission of sound waves is almost attenuated in heavy metals. Therefore, the three-way tube 1, L-shaped protective shell 2, connecting tube one 3, connecting tube two 4, and the two earrings 14 in this stethoscope must be made of heavy metals such as stainless steel or even titanium. The two long rubber tubes 9 and the two short rubber tubes 13 in this invention are all made of PVC material. The flat earpiece 11 in this invention is mainly used for auscultation of high-pitched noise, and the bell earpiece 12 is mainly used for auscultation of low-pitched noise. In the actual use of this invention, cold-proof rings can be installed on the outer surface of the flat earpiece 11 and the outer surface of the bell earpiece 12 to reduce the stimulation of cold metal on the patient and improve the patient's comfort when using the stethoscope.

[0036] like Figure 4-7As shown, two limiting components 7 are installed between the outer surface of the movable plate 51 and the inner wall of the L-shaped protective tube shell 2. The limiting component 7 includes a sliding groove 71 and a limiting slot 72 opened in the inner wall of the L-shaped protective tube shell 2. The left end of the sliding groove 71 is connected to the interior of the limiting slot 72. The limiting component 7 also includes a cavity 73 opened inside the movable plate 51. A connecting plate 74 is slidably connected to the inner wall of the cavity 73. A limiting post 75 is installed on the outer surface of the connecting plate 74. The end of the limiting post 75 away from the connecting plate 74 penetrates the inner wall of the cavity 73 and extends into the interior of the sliding groove 71. The penetration point between the outer surface of the limiting post 75 and the inner wall of the sliding groove 71 is slidably connected. A spring 76 is installed between the side of the connecting plate 74 away from the limiting post 75 and the inner wall of the cavity 73. A reset assembly 8 is installed on the outer surface of the L-shaped protective tube shell 2. The reset assembly 8 includes a rotating ring 81 sleeved on the outer surface of the L-shaped protective tube shell 2 and two arc-shaped grooves 82 opened on the outer surface of the L-shaped protective tube shell 2. Two pressing blocks 83 are installed on the inner wall of the rotating ring 81. The two pressing blocks 83 are slidably connected to the inner walls of the two arc-shaped grooves 82 respectively. The reset assembly 8 also includes two arc-shaped guide rails 84 fixedly connected to the outer surface of the L-shaped protective tube shell 2. Guide blocks 85 are slidably connected to the inner walls of the two arc-shaped guide rails 84, and the guide blocks 85 are connected to the rotating ring 81. Positioning posts 86 are installed on the outer surface of the guide blocks 85 and the inner wall of the arc-shaped guide rails 84. Springs 87 are provided inside the arc-shaped guide rails 84. The two ends of the springs 87 are respectively engaged with the outer surfaces of the two positioning posts 86.

[0037] In this embodiment, when the end of the limiting post 75 away from the connecting plate 74 is located inside the slide groove 71, the spring 76 inside the cavity 73 is in a compressed state. The inner wall of the cavity 73 has a sliding hole adapted to the limiting post 75. The outer surface of the limiting post 75 is slidably connected to the inner wall of the sliding hole in the inner wall of the cavity 73, thus guiding and limiting the limiting post 75. Figure 4 As shown, the end of the limiting post 75 away from the connecting plate 74 is designed with a wedge shape. The opening depth of the limiting groove 72 is greater than the opening depth of the sliding groove 71, which allows the limiting post 75 to be inserted into the interior of the limiting groove 72. A ring of anti-slip texture is opened on the outer surface of the rotating ring 81, which can increase the friction of the outer surface of the rotating ring 81 and facilitate the rotation of the rotating ring 81. The arc groove 82 opened on the outer surface of the L-shaped protective tube shell 2 is connected to the interior of the limiting groove 72, which allows the pressing block 83 to press down on the limiting post 75 when sliding on the inner wall of the arc groove 82, so that the limiting post 75 is flush with the inner wall of the sliding groove 71.

[0038] like Figure 8As shown, the adjustable ear spring assembly 16 includes two symmetrical sleeves 16a, which are respectively fitted onto the outer surfaces of the two earrings 14, and the inner walls of the sleeves 16a slide in contact with the outer surfaces of the earrings 14. An ear spring plate 16b is fixedly connected between the two sleeves 16a. Limit bolts 16c are threaded onto the outer surfaces of the two sleeves 16a, and rotating blocks 16d are installed at the ends of the two limit bolts 16c that are far apart from each other.

[0039] In this embodiment, the ear spring 16b is made of steel with good toughness. A ring of anti-slip texture is opened on the outer surface of the two rotating blocks 16d, which can increase the friction of the outer surface of the rotating blocks 16d and facilitate the rotation of the rotating blocks 16d and the limiting bolts 16c. The ends of the two limiting bolts 16c that are close to each other are in contact with the outer surfaces of the two ear rings 14, which can facilitate the limiting of the sleeve 16a.

[0040] As attached Figure 9-11 As shown, a pair of cushioning sponge sleeves 17 are symmetrically fixed to the tail end of the tension spring 63. The two cushioning sponge sleeves 17 are fixed together by adhesive. Several blocking blocks 18 are sequentially fixed to the inner wall of the cushioning sponge sleeves 17 from top to bottom. The blocking blocks 18 are distributed on the inner wall of the cushioning sponge sleeves 17 in a semi-spiral structure, and the spiral direction of this structure matches the spiral direction of the tension spring 63. The cross-section of each blocking block 18 is trapezoidal. The upper interior angle of the trapezoidal cross-section of the several blocking blocks 18 from top to bottom is equidistantly decreasing, with the spacing value ranging from 10° to 30°. The interval between the blocking blocks 18 is the same as that of the tension spring 63. The spacing of the three spirals is matched. By successively decreasing the angle of the upper interior angle of the trapezoid inside the multiple blocking blocks 18, the relative volume of the multiple blocking blocks 18 is changed, so that the volume gradually decreases. This allows the multiple spirals at the tail end of the tension spring 63 to simultaneously contact and squeeze the surface of the multiple blocking blocks 18 during the compression process. This achieves the overall buffering effect of the tension spring 63 and prevents the tension spring 63 from stretching and retracting during the reset process. This makes the overall design of the replacement structure more reasonable and the work more practical. (Summary: During the reset process of the tension spring 63, the tail end is compressed first, while the compression state of the middle position is slightly later than that of the tail end, resulting in a difference in the reset distance between the spirals.)

[0041] The work steps are as follows:

[0042] The first step, when using the stethoscope, is for the physician to insert the two silicone earplugs 15 at the tip of the earring 14 into the inside of each ear, ensuring a tight seal between the earplugs 15 and the physician's ears. The flat stethoscope head 11 is then placed in contact with the patient's auscultation site. High-pitched sounds from the patient's heart area can be transmitted through the flat stethoscope head 11 and the long tubing 9 to the connecting tube 3. Figure 3 As shown, the sound inside the connecting tube 3 can enter the interior of the three-way tube 1 through the L-shaped protective shell 2, allowing the sound inside the three-way tube 1 to enter the interior of the two earrings 14 through the two short rubber tubes 13. This allows the physician to auscultate the high-pitched sounds of the heart. When it is necessary to auscultate the low-pitched sounds of the patient, the physician presses the pressing plate 62 with their finger, causing the pressing plate 62 to move the pressing rod 61. The pressing rod 61 then moves the moving plate 51 to slide on the inner wall of the L-shaped protective shell 2, which can stretch the tension spring 63. When the moving plate 51 slides to the left on the inner wall of the L-shaped protective shell 2, it can drive the sealing piston 52 through the two connecting columns 53 to move the sealing piston 52 on the L-shaped protective shell 2. The inner wall slides to the left, causing the left side of the sealing piston 52 to contact the inner wall of the L-shaped protective shell 2, allowing the outer surface of the sealing piston 52 to seal the top of the connecting pipe 3, and connecting the bottom of the ventilation channel 54 to the top of the connecting pipe 4. This facilitates the connection between the three-way pipe 1 and the connecting pipe 4, allowing the three-way pipe 1 to connect to the bell-shaped stethoscope 12. Physicians can use the bell-shaped stethoscope 12 to auscultate the patient's heart for low-pitched sounds without needing to change stethoscopes or stethoscopes with different stethoscopes, making the auscultation process more convenient for cardiologists and effectively improving their auscultation efficiency. (Preparation of the actual object is as follows...) Figure 12 (as shown);

[0043] The second step involves the physician pressing the pressure plate 62 to the left, which stretches the tension spring 63 onto the moving plate 51. This causes the moving plate 51 to slide the limiting post 75 along the inner wall of the groove 71. When the sealing piston post 52 moves to the position where it seals the connecting pipe 3, the limiting post 75 is precisely engaged inside the limiting groove 72, thus limiting the moving plate 51 and ensuring the sealing effect of the sealing piston post 52 on the connecting pipe 3. When it is necessary to reset the sealing piston post 52 to connect the tee pipe 1 to the connecting pipe 3, the rotating ring 81 on the outer surface of the L-shaped protective tube shell 2 is rotated first. This causes the squeezing block 83 to slide along the inner wall of the arc groove 82, allowing the squeezing block 83 to squeeze the limiting post 75. The pressure causes the end of the limiting post 75 to move to a position flush with the inner wall of the slide groove 71. Under the tension of the tension spring 63, the moving plate 51 can be pulled back to its original position, causing the limiting post 75 to slide into the interior of the slide groove 71. This allows the sealing piston post 52 to seal the connecting pipe 4 again, connecting the three-way pipe 1 and the connecting pipe 3, facilitating the quick conversion of the stethoscope head. When the rotating ring 81 is rotated, it can cause the rotating ring 81 to drive the guide block 85 to slide on the inner wall of the arc-shaped guide rail 84, compressing the positioning post 86. When no force is applied to the rotating ring 81, the guide block 85 can be reset under the elastic force of the positioning post 86, thus facilitating the reset of the rotating ring 81 for subsequent use.

[0044] Thirdly, when the doctor uses the stethoscope, pulling the two earrings 14 outwards expands the ear reeds 16b. The rebound force of the ear reeds 16b allows the two earrings 14 to easily return to their original position, making it convenient to suspend them on the doctor's ears. When adjusting the rebound force between the two earrings 14, first turn the two rotating blocks 16d to move the limiting bolts 16c away from the earrings 14, releasing the restriction on the sleeves 16a. Then adjust the position of the two sleeves 16a, which moves the ear reeds 16b. After adjustment, tighten the two limiting bolts 16c to adjust the position of the ear reeds 16b. Since the length of the ear reeds 16b remains constant and the two earrings 14 form a certain angle, adjusting the position of the ear reeds 16b adjusts the distance between the tops of the two earrings 14, facilitating the adjustment of the stethoscope's ear reed elasticity and adapting it to different doctors.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel stethoscope for preliminary diagnosis in cardiology, comprising a three-way valve, characterized in that: The bottom end of the tee is fixedly connected to an L-shaped protective casing. A connecting pipe one and a connecting pipe two are located directly below the tee. The top ends of both connecting pipe one and connecting pipe two are connected to the interior of the L-shaped protective casing. A channel conversion assembly is located inside the L-shaped protective casing. The channel conversion assembly includes a movable plate slidably connected to the inner wall of the L-shaped protective casing. A sealing piston is located on the left side of the movable plate. The movable plate and the sealing piston are connected by two connecting posts. A vent is provided inside the sealing piston. A pressing assembly is installed on the right side of the movable plate. The pressing assembly includes a pressing rod fixedly connected to the right side of the movable plate. Two limiting assemblies are installed between the outer surface of the movable plate and the inner wall of the L-shaped protective casing. The limiting assemblies include openings... The L-shaped protective tube shell has a sliding groove on its inner wall and a limiting groove on its inner wall. The left end of the sliding groove is connected to the inside of the limiting groove. A reset assembly is installed on the outer surface of the L-shaped protective tube shell. The reset assembly includes a rotating ring sleeved on the outer surface of the L-shaped protective tube shell and two arc-shaped grooves on the outer surface of the L-shaped protective tube shell. The bottom ends of the first and second connecting tubes are fixedly connected to long rubber tubes. The outer surfaces of the two long rubber tubes are wrapped with protective sleeves. The bottom ends of the two long rubber tubes are respectively equipped with a flat earpiece and a bell earpiece. The two ends of the three-way tube away from the L-shaped protective tube shell are connected to short rubber tubes. The top ends of the two short rubber tubes are connected to earrings. The top ends of the two earrings are equipped with silicone earplugs. An adjustable ear spring assembly is installed between the two earrings.

2. A novel stethoscope for preliminary diagnosis in cardiology according to claim 1, characterized in that: The right end of the pressing rod penetrates the inner wall of the L-shaped protective tube shell and extends to the outside of the L-shaped protective tube shell. A pressing plate is fixedly connected to the right end of the pressing rod.

3. A novel stethoscope for preliminary diagnosis in cardiology according to claim 2, characterized in that: The pressing assembly also includes two tension springs fixedly connected to the right side of the movable plate, and the right ends of the two tension springs are fixedly connected to the inner wall of the L-shaped protective tube shell.

4. A novel stethoscope for preliminary diagnosis in cardiology according to claim 1, characterized in that: The limiting component also includes a cavity formed inside the movable plate, with a connecting plate slidably connected to the inner wall of the cavity, and a limiting post installed on the outer surface of the connecting plate.

5. A novel stethoscope for preliminary diagnosis in cardiology according to claim 4, characterized in that: The end of the limiting post away from the connecting plate penetrates the inner wall of the cavity and extends into the interior of the slide groove. The outer surface of the limiting post and the penetration point of the inner wall of the slide groove are slidably connected. A spring is installed between the side of the connecting plate away from the limiting post and the inner wall of the cavity.

6. A novel stethoscope for preliminary diagnosis in cardiology according to claim 1, characterized in that: The inner wall of the rotating ring is equipped with two extrusion blocks, and the two extrusion blocks are slidably connected to the inner walls of the two arc-shaped grooves respectively.

7. A novel stethoscope for preliminary diagnosis in cardiology according to claim 1, characterized in that: The reset assembly also includes two arc-shaped guide rails fixedly connected to the outer surface of the L-shaped protective tube shell. The inner walls of the two arc-shaped guide rails are slidably connected with guide blocks, and the guide blocks are connected to the rotating ring.

8. A novel stethoscope for preliminary diagnosis in cardiology according to claim 7, characterized in that: Positioning posts are installed on the outer surface of the guide block and the inner wall of the arc-shaped guide rail. A second spring is installed inside the arc-shaped guide rail, and the two ends of the second spring are respectively engaged with the outer surfaces of the two positioning posts.

9. A novel stethoscope for preliminary diagnosis in cardiology according to claim 1, characterized in that: The adjustable ear spring assembly includes two sleeves, which are respectively fitted onto the outer surfaces of two earrings, and the inner walls of the sleeves slide in contact with the outer surfaces of the earrings. An ear spring is fixedly connected between the two sleeves, and a limit bolt is threaded onto the outer surfaces of both sleeves. A rotating block is installed at the ends of the two limit bolts that are far apart from each other.

10. A novel stethoscope for preliminary diagnosis in cardiology according to claim 3, characterized in that: The tail end of the tension spring is symmetrically fixed with a pair of cushioning foam sleeves, which are fixed together by adhesive. Several blocking blocks are fixedly installed on the inner wall of the cushioning foam sleeves from top to bottom. The blocks are distributed on the inner wall of the cushioning foam sleeves in a semi-spiral structure, and the spiral direction of the structure matches the spiral direction of the tension spring. The cross-section of the blocking blocks is trapezoidal, and the upper interior angle of the trapezoidal cross-section of the blocks from top to bottom is set at equal intervals, with the spacing value ranging from 10° to 30°. The spacing between the blocks matches the spacing of the spiral of the tension spring.

Images