Visual electrocardiogram monitoring stethoscope

Abstract

The invention relates to the technical field of medical instruments, and discloses a visual electrocardiogram monitoring stethoscope which comprises a three-way treatment device, a lead wire is fixedly connected to the outer surface of the three-way treatment device, a patch electrode is fixedly connected to the outer surface of the lead wire, a fixing mechanism is slidably connected to the outer surface of the lead wire, and the patch electrode is fixedly connected to the outer surface of the three-way treatment device. The upper surface of the three-way processing device is fixedly connected with a first sound guide pipe, the upper surface of the first sound guide pipe is fixedly connected with a receiving ear piece, the outer surface of the three-way processing device is fixedly connected with a sound insulation mechanism, patch electrodes are tightly attached through extrusion of a clamping belt and an arc-shaped clamping piece, and the situation that monitoring is affected by poor contact is avoided. The position of the electrode is adjusted through the first bevel ring and the first threaded ring to adapt to different chest positions; the spring supports the lead wire to prevent bending and damage; the first clamping ring and other structures can block large sound conduction, and operators are protected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a visual electrocardiogram monitoring stethoscope. BACKGROUND

[0002] In the field of medical diagnosis, the stethoscope is a basic tool for doctors to listen to the physiological sounds in the patient's body, such as heart sounds and breath sounds. The traditional stethoscope mainly relies on mechanical transmission to achieve sound pickup and amplification, and can only assist in judging the function of the heart and lungs through sound information, and cannot synchronously obtain the electrocardiogram signal, making it difficult to fully reflect the correlation between the electrical activity and mechanical activity of the heart.

[0003] The patent application with the application number CN03234335.3 discloses a visual electrocardiogram monitoring stethoscope, which comprises three fixed electrodes on a known visual stethoscope, each of which is connected with a lead device composed of a lead wire and a patch electrode connected with one end of the lead wire. The patch electrode is connected with the corresponding position of the chest lead of the human body. This stethoscope enhances the anti-interference ability and improves the sensitivity of the electrocardiogram signal by improving the position of the chest lead electrode and extending the lead wire, especially improving the recognition of the "P" wave of the electrocardiogram, and improving the diagnosis rate of various complex arrhythmias. It can perform continuous real-time electrocardiogram monitoring within a certain distance.

[0004] However, the patent also has the following shortcomings: when different body types of patients are monitored and listened to, the patch electrode often does not fit well or does not contact closely, resulting in distortion of the electrocardiogram signal; when the patch electrode falls off, the contact between the two patch electrodes produces a lot of noise, which is transmitted through the sound pickup chest piece and interferes with the operator. In view of this situation, a visual electrocardiogram monitoring stethoscope is proposed. SUMMARY

[0005] The purpose of the present application is to provide a visual electrocardiogram monitoring stethoscope to solve the problems raised in the background art.

[0006] In order to solve the above technical problems, the present application provides the following technical scheme: a visual electrocardiogram monitoring stethoscope, comprising a three-way processing device, the outer surface of the three-way processing device is fixedly connected with a lead wire, the outer surface of the lead wire is fixedly connected with a patch electrode, the outer surface of the lead wire is slidably connected with a fixing mechanism, the fixing mechanism comprises: A clamping belt is provided, a sliding clamping groove is formed in the inside of the clamping belt, a through hole clamping frame one and a through hole clamping frame two are fixedly connected to the outer surface of the clamping belt, a telescopic cover is fixedly connected to the outer surface of the sliding clamping groove, and the telescopic cover is used for protecting the sliding clamping groove; An arc-shaped card, wherein the interior of the arc-shaped card is rotatably connected to a rotating ring 1, the outer surface of the rotating ring 1 is fixedly connected to a rotating armrest, the outer surface of the rotating armrest is sleeved with a telescopic tube 1, and the rotating armrest is used to push the arc-shaped card.

[0007] According to the above technical solution, a sound guide tube 1 is fixedly connected to the upper surface of the three-way processing device, a receiving ear piece is fixedly connected to the upper surface of the sound guide tube 1, a sound insulation mechanism is fixedly connected to the outer surface of the three-way processing device, and the patch electrodes are placed on the skin under the left clavicle, right clavicle and apex of the human chest and are used for electrocardiogram monitoring.

[0008] According to the above technical solution, the fixing mechanism also includes an arc-shaped slider, which is clamped with the sliding slot. The internal rotation of the arc-shaped slider is connected to the rotating ring 2, and the rotating ring 2 is plugged into the lead wire. The outer surface of the lead wire is sleeved with the bevel ring 1, and the outer surface of the bevel ring 1 is threadedly connected with the threaded ring 1. The bevel ring 1 and the threaded ring 1 are used to fix the position of the rotating ring 2.

[0009] According to the above technical solution, the arc-shaped card is clamped with the rotating ring 1, the rotating armrest is threadedly connected with the through-hole card frame 1, the outer surface of the telescopic tube 1 is in contact with the outer surface of the through-hole card frame 1, the through-hole card frame 1 and the through-hole card frame 2 are slidingly connected with the cassette, and the arc-shaped card is used to fix the cassette.

[0010] According to the above technical solution, the arc-shaped card is clamped with the sliding slot, the telescopic cover is fixedly connected to the side of the arc-shaped slider, the outer surface of the rotating ring 2 is in contact with the inner wall of the sliding slot, the outer surface of the threaded ring 1 is in contact with the outer surface of the rotating ring 2, and the tape is used to fix the position of the patch electrode.

[0011] According to the above technical solution, the sound insulation mechanism includes a clamping ring assembly, which is sleeved with the lead wire, a spring is provided on the upper surface of the clamping ring assembly, and the upper surface of the clamping ring assembly is fixedly connected to the second telescopic tube, the outer surface of the three-way processing device is fixedly connected to the second sound guide tube, the outer surface of the second sound guide tube is fixedly connected to the sound pickup chest piece, the inner wall of the sound pickup chest piece is fixedly connected to the eardrum and the monitor, and the monitor is used to monitor the size of the stethoscope sound.

[0012] According to the above technical solution, the sound insulation mechanism also includes a bevel ring 2, which is sleeved with the sound guide tube 2. The outer surface of the bevel ring 2 is threadedly connected to the threaded ring 2, the inner wall of the bevel ring 2 is fixedly connected to the clamping ring 1, the lower surface of the bevel ring 2 is fixedly connected to the telescopic tube 3, and the upper surface of the threaded ring 2 is fixedly connected to the hydraulic pump. The telescopic tube 3 is used to protect the hydraulic pump.

[0013] According to the above technical solution, the lower surface of the spring is in contact with the upper surface of the clamping ring assembly, and a clamping ring assembly is provided at both ends of the spring. The threaded ring 2 is fixedly connected to the outer surface of the sound guide tube 2, and the clamping ring 1 is in contact with the outer surface of the sound guide tube 2. The lower surface of the telescopic tube 3 is fixedly connected to the upper surface of the threaded ring 2, and the output end of the hydraulic pump is fixedly connected to the lower surface of the bevel ring 2. The clamping ring 1 is used to clamp the sound guide tube 2.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This visual ECG monitoring stethoscope uses a cassette. When the patch electrodes are placed on the skin below the left and right clavicles and the apex of the heart, the curved card squeezes the cassette, allowing the patch electrodes to fit tightly against the human body surface, preventing ECG monitoring from being affected by poor contact.

[0015] 2. This visual ECG monitoring stethoscope is equipped with a beveled ring and a threaded ring. When the rotating ring drives the lead wire to rotate around the cassette, the rotating threaded ring squeezes the beveled ring, causing the rotating ring to squeeze the lead wire, thereby adjusting the position of the patch electrode so that the patch electrode can fit different positions on the human chest.

[0016] 3. This visual ECG monitoring stethoscope is equipped with a spring. When the lead wire is bent to allow the patch electrode to fit the human body, the spring provides elastic support for the lead wire, which can offset the stress generated by the lead wire's own bending and twisting, preventing it from being damaged by excessive force and allowing the lead wire to bend smoothly.

[0017] 4. This visual ECG monitoring stethoscope is equipped with a clamping ring. When the sound pickup chestpiece detects a loud sound, a hydraulic pump immediately pulls the inclined ring, causing its inclined surface to contact the surface of the sound guide tube. This allows the clamping ring to squeeze the sound guide tube, pressuring the sound guide channel inside the sound guide tube, making it difficult for the sound to continue to be transmitted, thereby protecting the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is an enlarged view of the structure of the main body of the present invention; Figure 3 It is a structural cross-sectional view of the fixing mechanism of the present invention; Figure 4 for Figure 3 A magnified cross-sectional view of the structure at point A in the middle; Figure 5 This is a cross-sectional view of the structure of the arc-shaped slider of the present invention; Figure 6 for Figure 5 A magnified cross-sectional view of the structure at point B in the middle; Figure 7 It is a structural cross-sectional view of the sound insulation mechanism of the present invention; Figure 8 for Figure 7 Enlarged cross-sectional view of the structure at point C in the middle.

[0019] In the figure: 1. Receiving earpiece; 2. Sound guide tube 1; 3. Three-way processing device; 31. Lead wire; 32. Patch electrode; 4. Fixing mechanism; 41. Cassette; 411. Sliding card slot; 412. Through-hole card frame 1; 413. Through-hole card frame 2; 414. Telescopic cover; 42. Arc card; 421. Rotating ring 1; 422. Rotating armrest; 423. Telescopic tube 1; 43. Arc slider; 431. Rotating ring 2; 432. Bevel ring 1; 433. Threaded ring 1; 5. Sound insulation mechanism; 51. Snap ring assembly; 52. Spring; 53. Telescopic tube 2; 54. Sound guide tube 2; 541. Sound pickup chestpiece; 542. Tympanic membrane; 543. Monitor; 55. Bevel ring 2; 551. Threaded ring 2; 552. Snap ring 1; 553. Telescopic tube 3; 554. Hydraulic pump. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0022] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0023] Example 1: See Figures 1-6 The present invention provides a technical solution: a visual electrocardiogram monitoring stethoscope, comprising a three-way processing device 3, a lead wire 31 fixedly connected to the outer surface of the three-way processing device 3, a patch electrode 32 fixedly connected to the outer surface of the lead wire 31, and a fixing mechanism 4 slidably connected to the outer surface of the lead wire 31, the fixing mechanism 4 comprising: The cassette 41 has a sliding slot 411 formed inside. A first through-hole card frame 412 and a second through-hole card frame 413 are fixedly connected to the outer surface of the cassette 41. A telescopic cover 414 is fixedly connected to the outer surface of the sliding slot 411 to protect the sliding slot 411. The arc-shaped card 42 has a rotating ring 421 rotatably connected to the inside of the arc-shaped card 42. The outer surface of the rotating ring 421 is fixedly connected to a rotating armrest 422. The outer surface of the rotating armrest 422 is sleeved with a telescopic tube 423. The rotating armrest 422 is used to push the arc-shaped card 42.

[0024] The upper surface of the three-way processing device 3 is fixedly connected to a sound guide tube 2, the upper surface of the sound guide tube 2 is fixedly connected to a receiving earpiece 1, the outer surface of the three-way processing device 3 is fixedly connected to a sound insulation mechanism 5, and the patch electrodes 32 are placed on the left clavicle, right clavicle and apex skin of the human chest and are used for electrocardiogram monitoring.

[0025] The fixing mechanism 4 also includes an arc-shaped slider 43, which is engaged with the sliding slot 411. The internal rotation of the arc-shaped slider 43 is connected to the rotating ring 2 431, and the rotating ring 2 431 is plugged into the lead wire 31. The outer surface of the lead wire 31 is sleeved with a bevel ring 1 432, and the outer surface of the bevel ring 1 432 is threadedly connected with a threaded ring 1 433. The bevel ring 1 432 and the threaded ring 1 433 are used to fix the position of the rotating ring 2 431.

[0026] The arc-shaped card 42 is clamped with the rotating ring 421, the rotating armrest 422 is threadedly connected to the through-hole card frame 412, the outer surface of the telescopic tube 423 is in contact with the outer surface of the through-hole card frame 412, the through-hole card frame 412 and the through-hole card frame 2 413 are slidingly connected with the card belt 41, and the arc-shaped card 42 is used to fix the card belt 41.

[0027] The arc-shaped card 42 is engaged with the sliding slot 411, the telescopic cover 414 is fixedly connected to the side of the arc-shaped slider 43, the outer surface of the rotating ring 2 431 is in contact with the inner wall of the sliding slot 411, the outer surface of the threaded ring 1 433 is in contact with the outer surface of the rotating ring 2 431, and the cassette 41 is used to fix the position of the patch electrode 32. When the arc-shaped slider 43 slides inside the sliding slot 411, the telescopic cover 414 protects the sliding slot 411, thereby preventing the patient's body hair from affecting the sliding of the arc-shaped slider 43 and protecting the patient. When the rotating armrest 422 rotates on the internal thread of the through-hole card frame 1 412, the telescopic tube 1 423 protects the rotation of the rotating armrest 422, so that external factors will not affect the rotation of the rotating armrest 422.

[0028] When performing ECG monitoring and auscultation on patients of different body sizes through the patch electrodes 32, the patch electrodes 32 often cause ECG signal distortion due to poor position adaptation or loose contact. Therefore, a fixing mechanism 4 is required to limit and fix the patch electrodes 32 so that they are difficult to fall off when performing ECG monitoring on patients of different body sizes.

[0029] The working principle of this embodiment is as follows: when using this visual ECG monitoring stethoscope, by rotating the rotating armrest 422, the arc card 42 is driven to move outward by the rotating ring 1 421, thereby contacting the clamping of the arc card 42 on the cassette 41. At this time, the cassette 41 is pulled to slide inside the through-hole card frame 1 412, so that the through-hole card frame 1 412 contacts the outer surface of the through-hole card frame 2 413. At this time, the cassette 41 is sleeved on the human body from the top of the patient. At this time, the threaded ring 1 433 is rotated so that the bevel ring 1 432 does not squeeze the lead wire 31. At this time, the lead wire 31 is pulled to slide inside the rotating ring 2 431, and the rotating ring 2 431 is inside the arc slider 43. Rotate, the arc-shaped slider 43 slides inside the sliding slot 411, thereby fitting the patch electrode 32 to the left clavicle, right clavicle and apex skin of the human chest, and then rotate the threaded ring 1 433 to make the inclined surface of the inclined ring 1 432 contact the surface of the lead wire 31, so that the position of the lead wire 31 and the rotating ring 2 431 are fixed. At this time, the cassette 41 is pulled through the through-hole card frame 2 413 to make the inner surface of the cassette 41 contact the surface of the human body. At this time, rotate the rotating armrest 422 to push the rotating armrest 422 inward to move the arc-shaped card 42, squeeze the cassette 41, and fix the sliding of the cassette 41 and the through-hole card frame 1 412, so that the patch electrode 32 can perform visual electrocardiogram monitoring on the patient.

[0030] Example 2: Please refer to Figures 7-8 Based on the first embodiment, the present invention provides a technical solution: the sound insulation mechanism 5 includes a clamping ring assembly 51, the clamping ring assembly 51 is sleeved with the lead wire 31, a spring 52 is provided on the upper surface of the clamping ring assembly 51, a second telescopic tube 53 is fixedly connected to the upper surface of the clamping ring assembly 51, a second sound guide tube 54 is fixedly connected to the outer surface of the three-way processing device 3, a second sound guide tube 54 is fixedly connected to the outer surface of the second sound guide tube 54, a sound pickup chest piece 541 is fixedly connected to the inner wall of the sound pickup chest piece 541, and an eardrum 542 and a monitor 543 are fixedly connected to the inner wall of the sound pickup chest piece 541. The monitor 543 is used to monitor the size of the stethoscope sound.

[0031] The sound insulation mechanism 5 also includes a bevel ring 2 55, which is socketed with the sound guide tube 2 54. The outer surface of the bevel ring 2 55 is threadedly connected to the threaded ring 2 551, the inner wall of the bevel ring 2 55 is fixedly connected to the clamping ring 1 552, the lower surface of the bevel ring 2 55 is fixedly connected to the telescopic tube 3 553, the upper surface of the threaded ring 2 551 is fixedly connected to the hydraulic pump 554, and the telescopic tube 3 553 is used to protect the hydraulic pump 554.

[0032] The lower surface of the spring 52 is in contact with the upper surface of the snap ring assembly 51, and snap ring assemblies 51 are provided at both ends of the spring 52. The threaded ring 2 551 is fixedly connected to the outer surface of the sound guide tube 2 54, the snap ring 1 552 is in contact with the outer surface of the sound guide tube 2 54, the lower surface of the telescopic tube 3 553 is fixedly connected to the upper surface of the threaded ring 2 551, and the output end of the hydraulic pump 554 is fixedly connected to the lower surface of the bevel ring 2 55. The snap ring 1 552 is used to clamp the sound guide tube 2 54. When the spring 52 elastically supports the lead wire 31, the spring 52 is protected by the telescopic tube 2 53 to prevent impurities from being stuck inside the spring 52 and affecting the lead wire 31. When the hydraulic pump 554 pulls the bevel ring 2 55 to move, the telescopic tube 3 553 protects the pulling of the hydraulic pump 554.

[0033] When the patch electrodes 32 fall off, the contact between the two patch electrodes 32 will generate a loud noise, which will be transmitted through the sound pickup chest piece 541 and will interfere with the operator. Therefore, the sound insulation mechanism 5 is required to block the transmitted noise so that the noise is less likely to affect the operator.

[0034] The working principle of this embodiment is as follows: when using this visual ECG monitoring stethoscope, when the lead wire 31 is pulled, the patch electrode 32 is attached to the surface of the human body, by adjusting the clamping ring assembly 51 at the top of the spring 52, the clamping ring assembly 51 is matched with one end of the lead wire 31, and the clamping ring assembly 51 at the bottom of the spring 52 is in contact with the upper surface of the bevel ring 432, so that the spring 52 elastically supports the entire end of the lead wire 31, offsetting the stress caused by the bending and twisting of the lead wire itself, and avoiding its When the sound pickup chest piece 541 is damaged due to excessive force and receives a large noise through the eardrum 542 or the two patch electrodes 32 fall off and contact to generate a large noise, the noise is monitored by the monitor 543. At this time, the hydraulic pump 554 is started to pull the inclined ring 2 55 so that the side of the inclined ring 2 55 contacts the outer surface of the sound guide tube 2 54, thereby the clamping ring 1 552 squeezes the sound guide tube 2 54, causing the sound guide channel inside the sound guide tube 2 54 to be squeezed and shrink, thereby making it difficult for the noise to be transmitted.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A visual electrocardiogram monitoring stethoscope, comprising a three-way processing device (3), wherein the outer surface of the three-way processing device (3) is fixedly connected to a lead wire (31), the outer surface of the lead wire (31) is fixedly connected to a patch electrode (32), and the outer surface of the lead wire (31) is slidably connected to a fixing mechanism (4), characterized in that: The fixing mechanism (4) comprises: A cassette (41), wherein a sliding slot (411) is provided inside the cassette (41), a through-hole card frame 1 (412) and a through-hole card frame 2 (413) are fixedly connected to the outer surface of the cassette (41), and a telescopic cover (414) is fixedly connected to the outer surface of the sliding slot (411), and the telescopic cover (414) is used to protect the sliding slot (411); An arc-shaped card (42) is rotatably connected to a rotating ring (421) inside the arc-shaped card (42), a rotating armrest (422) is fixedly connected to the outer surface of the rotating ring (421), a telescopic tube (423) is sleeved on the outer surface of the rotating armrest (422), and the rotating armrest (422) is used to push the arc-shaped card (42).

2. A visual ECG monitoring stethoscope according to claim 1, characterized in that: The upper surface of the three-way processing device (3) is fixedly connected to a sound guide tube (2), the upper surface of the sound guide tube (2) is fixedly connected to a receiving earpiece (1), the outer surface of the three-way processing device (3) is fixedly connected to a sound insulation mechanism (5), and the patch electrodes (32) are placed on the left clavicle, the right clavicle and the skin of the apex of the heart of the human chest and are used for electrocardiogram monitoring.

3. A visual ECG monitoring stethoscope according to claim 2, characterized in that: The fixing mechanism (4) further comprises an arc-shaped slider (43), the arc-shaped slider (43) being engaged with the sliding slot (411), the interior of the arc-shaped slider (43) being rotatably connected to a rotating ring 2 (431), the rotating ring 2 (431) being plugged into the lead wire (31), the outer surface of the lead wire (31) being sleeved with a beveled ring 1 (432), the outer surface of the beveled ring 1 (432) being threadedly connected to a threaded ring 1 (433), the beveled ring 1 (432) and the threaded ring 1 (433) being used to fix the position of the rotating ring 2 (431).

4. A visual ECG monitoring stethoscope according to claim 3, characterized in that: The arc-shaped card (42) is snap-connected with the rotating ring (421), the rotating armrest (422) is threadedly connected with the through-hole card frame (412), the outer surface of the telescopic tube (423) is in contact with the outer surface of the through-hole card frame (412), the through-hole card frame (412) and the through-hole card frame (413) are slidably connected with the card belt (41), and the arc-shaped card (42) is used to fix the card belt (41).

5. The visual ECG monitoring stethoscope according to claim 3, characterized in that: The arc-shaped card (42) is snap-fitted to the sliding card slot (411), the telescopic cover (414) is fixedly connected to the side of the arc-shaped slider (43), the outer surface of the rotating ring (431) contacts the inner wall of the sliding card slot (411), the outer surface of the threaded ring (433) contacts the outer surface of the rotating ring (431), and the card belt (41) is used to fix the position of the patch electrode (32).

6. The visual ECG monitoring stethoscope according to claim 3, characterized in that: The sound insulation mechanism (5) includes a snap ring assembly (51), the snap ring assembly (51) is sleeved with the lead wire (31), a spring (52) is provided on the upper surface of the snap ring assembly (51), a second telescopic tube (53) is fixedly connected to the upper surface of the snap ring assembly (51), a second sound guide tube (54) is fixedly connected to the outer surface of the three-way processing device (3), a second sound guide tube (54) is fixedly connected to the outer surface of the second sound guide tube (54), a sound pickup chest piece (541) is fixedly connected to the inner wall of the sound pickup chest piece (541), and an eardrum (542) and a monitor (543) are fixedly connected, and the monitor (543) is used to monitor the size of the auscultation sound.

7. The visual ECG monitoring stethoscope according to claim 6, characterized in that: The sound insulation mechanism (5) further comprises a second bevel ring (55), wherein the second bevel ring (55) is sleeved with the second sound guide tube (54), the outer surface of the second bevel ring (55) is threadedly connected to the second thread ring (551), the inner wall of the second bevel ring (55) is fixedly connected to the first clamping ring (552), the lower surface of the second bevel ring (55) is fixedly connected to the third telescopic tube (553), the upper surface of the second thread ring (551) is fixedly connected to the hydraulic pump (554), and the third telescopic tube (553) is used to protect the hydraulic pump (554).

8. The visual ECG monitoring stethoscope according to claim 7, characterized in that: The lower surface of the spring (52) contacts the upper surface of the snap ring assembly (51), and snap ring assemblies (51) are provided at both ends of the spring (52). The threaded ring 2 (551) is fixedly connected to the outer surface of the sound guide tube 2 (54), and the snap ring 1 (552) contacts the outer surface of the sound guide tube 2 (54). The lower surface of the telescopic tube 3 (553) is fixedly connected to the upper surface of the threaded ring 2 (551), and the output end of the hydraulic pump (554) is fixedly connected to the lower surface of the bevel ring 2 (55), and the snap ring 1 (552) is used to clamp the sound guide tube 2 (54).

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