CN114027851A - Electrocardiograph lead structure fixed by belt - Google Patents

Abstract

The invention belongs to the technical field of medical instruments, and provides an electrocardiograph lead structure fixed by a belt, which comprises: the two ends of the bridle are detachably connected, a detection hole penetrates through the bridle along the thickness direction, and the detection hole is provided with a first detection area corresponding to the left side of the chest of the human body and a second detection area corresponding to the right side of the chest of the human body; the chest electrode comprises a first conductive part which is used for being in direct contact with the chest of the human body, and the first conductive part can pass through the detection hole; and the fixing device is arranged on the strap and used for fixing the chest conducting electrode and enabling the first conducting part to be in contact with the chest of the human body. The invention avoids a plurality of defects of the traditional negative pressure fixing mode, has the advantages of firm fixation, no pain absorption and no blood stasis trace on the surface of the skin, and is beneficial to the rescue of children, old people, women with thin subcutaneous fat, obesity, large chest and critically ill patients.

Description

Electrocardiograph lead structure fixed by belt

Technical Field

The invention relates to the technical field of medical instruments, in particular to an electrocardiograph lead structure fixed by a belt.

Background

The electrocardiograph is used to record the physiological electric signal generated by heart activity, and has the advantages of mature and reliable diagnostic technique, simple operation, moderate price, no damage to patients, etc., and has become one of the most popular medical electronic instruments in hospitals at all levels.

The chest electrode is a metal conductor used for taking various bioelectricity phenomena in the human body and is directly contacted with the human body to detect the electrocardio-activity. At present, the chest electrode mainly utilizes a suction ball to generate negative pressure so as to be fixed in front of the chest, and the fixing mode has the following problems:

1. the fixation is not firm, the interference is large, and the patient needs to be well matched;

2. the pain is absorbed;

3. red blood stasis is left on the skin after adsorption, the beauty is affected, and the skin is recovered for 2 to 3 days;

4. is not suitable for the rescue of children, old people or women with thin subcutaneous fat, obesity and large chest, and critically ill patients.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an electrocardiograph lead structure fixed by a belt so as to solve the technical problems in the background art.

In order to achieve the above object, the present invention provides a lead structure of an electrocardiograph fixed by a strap, comprising:

the two ends of the binding belt are detachably connected, a detection hole is formed in the binding belt and penetrates through the binding belt along the thickness direction, and the detection hole is provided with a first detection area corresponding to the left side of the chest of a human body and a second detection area corresponding to the right side of the chest of the human body;

a chest electrode comprising a first conductive portion for direct contact with a human chest, the first conductive portion being accessible through the inspection aperture; and

the fixing device is arranged on the belt and used for fixing the chest conducting electrode and enabling the first conducting part to be in contact with the chest of the human body.

Further, the fixing device is configured to allow the chest lead electrode to have a certain range of motion, and within the range of motion, the first conductive part is kept in contact with the chest of the human body.

Further, the fixing device includes:

the base is fixedly arranged on the strap and spans the detection hole, a through hole communicated with the detection hole is formed in the middle of the base, the base is provided with a first end and a second end which are opposite, the first end is close to the strap, and the second end is far away from the strap;

the adjusting ring is sleeved on the second end of the base and is configured to rotate around the central line of the through hole and keep relative static with the base; and

the adjusting frame is fixedly arranged on the adjusting ring, and an annular area defined by the adjusting frame is intersected with the central line of the adjusting ring;

the chest electrode is configured to move back and forth on the adjusting frame along the extending direction of the adjusting frame and keep relative static with the adjusting frame.

Further, the chest electrode further comprises:

a housing configured in a cylindrical shape, one end of which is provided with the first conductive portion in a sliding manner;

a second conductive part fixedly provided at the other end of the housing;

a first resilient member disposed within the housing and configured to have a tendency for the first conductive portion to protrude outside the housing;

the conducting wire is arranged in the shell, and two ends of the conducting wire are respectively and electrically connected with the first conducting part and the second conducting part; and

and the binding post is fixedly arranged on the second conductive part and is positioned outside the shell.

Further, the fixing device further comprises a mounting assembly for mounting the chest electrode, the mounting assembly can move back and forth on the adjusting frame along the extending direction of the adjusting frame and can be kept static relative to the adjusting frame, and the chest electrode is configured to have a stroke along the extending direction of the adjusting ring.

Furthermore, the chest electrode also comprises two elastic arms which are oppositely arranged outside the shell, one end of each elastic arm is fixedly connected with the shell, the other end of each elastic arm extends in the direction far away from the second conductive part, and the other end of each elastic arm is provided with a claw part;

the mounting assembly comprises a mounting cylinder, the mounting cylinder can move back and forth on the adjusting frame along the extending direction of the adjusting frame and can keep relative rest with the adjusting frame, and the inner wall of the mounting cylinder is provided with a plurality of tooth parts which are continuously distributed along the axial direction;

the claw part is matched with the plurality of tooth parts after being contacted, and the chest electrode can only move along the direction close to the first end of the base.

Further, the shell and the mounting cylinder are both configured to be cylindrical, the shell can be inserted into the mounting cylinder, two rows of teeth are oppositely arranged in the mounting cylinder, and a gap is formed between the two rows of teeth;

the claw part can rotate to the notch along the center line of the mounting cylinder so as to be separated from the tooth part, and the chest electrode can be taken out of the mounting cylinder along the direction far away from the first end of the base.

Further, the mounting assembly further comprises:

the clamping pieces are oppositely arranged on the outer wall of the installation barrel, the middle parts of the clamping pieces are hinged with the installation barrel, one ends of the clamping pieces, far away from the adjusting frame, are provided with pressing parts, and one ends of the clamping pieces, close to the adjusting frame, are provided with adsorption parts;

the magnetic piece is fixedly arranged on the adjusting frame and extends along the extending direction of the adjusting frame, and a magnetic attraction force is formed between the magnetic piece and the adsorption part; and

a second elastic member configured to cause the attraction portion to have a tendency to approach the magnetic member.

Further, the adsorption part is made of a hard magnetic material, and the magnetic member is made of a soft magnetic material.

Further, the base comprises a body portion and two oppositely arranged bonding portions, the bonding portions extend outwards along the outer side of the body portion, and the bonding portions are bonded with the binding belt.

The invention has the beneficial effects that: the electrocardiogram machine lead structure fixed by the belt fixes the chest lead electrode on the corresponding fixed point position by the matching use of the belt and the fixing device, so that the first conductive part is directly contacted with the chest, and a certain contact pressure can be continuously applied to the contact area. Therefore, the negative pressure fixing device avoids a plurality of defects of the traditional negative pressure fixing mode, has the advantages of firm fixation, no pain absorption and no congestion trace on the surface of skin, and is beneficial to the rescue of children, old people, women with thin subcutaneous fat, obesity, large breasts and critically ill patients.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a perspective view of a lead structure of an electrocardiograph fixed by a strap according to an embodiment of the present invention;

FIG. 2 is a perspective view of the chest lead electrode and fixation device assembled together;

FIG. 3 is a longitudinal half sectional view of FIG. 2;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a longitudinal half-sectional view of the chest electrode inserted into the mounting tube;

FIG. 6 is a perspective view of a chest electrode;

FIG. 7 is a top view of the mounting cartridge;

reference numerals:

10. a belt; 11. a detection hole; 12. a first detection area; 13. a second detection area; 20. a fixing device; 21. a base; 211. a body portion; 212. an adhesive portion; 22. an adjusting ring; 23. an adjusting frame; 24. mounting the component; 241. mounting the cylinder; 2411. a tooth portion; 2412. a notch; 242. a clamping member; 2421. a pressing part; 2422. an adsorption part; 243. a magnetic member; 244. a second elastic member; 30. a chest electrode; 31. a housing; 311. mounting grooves; 32. a first conductive portion; 321. a first guide post; 33. a second conductive portion; 331. a second guide post; 34. a binding post; 341. a first insertion part; 342. a second insertion part; 35. a resilient arm; 351. a claw portion; 36. a wire; 37. a first elastic member.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in FIGS. 1-7, the present embodiment provides an electrocardiograph lead structure fixed by a belt, which includes a belt 10, chest electrodes 30 and a fixing device 20. The connection can be dismantled at the both ends of band 10, band 10 is flexible area, the connection can be dismantled in magic subsides realization is passed through at the both ends of band 10, it has inspection hole 11 to open on the band 10, inspection hole 11 runs through along thickness direction band 10, inspection hole 11 have with human chest left side corresponding first detection region 12 and with human chest right side corresponding second detection region 13, first detection region 12 with second detection region 13 can be two independent detection regions, also can be two detection regions of intercommunication, and first detection region 12 corresponds five chest and leads the fixed position of electrode 30, and second detection region 13 corresponds a chest and leads the fixed position of electrode 30. Preferably, the first detection region 12 and the second detection region 13 communicate with each other.

The chest electrode 30 includes a first conductive part 32 for directly contacting with the chest of the human body, the first conductive part 32 can pass through the detection hole 11, and the first conductive part 32 can be made of copper alloy silver plating, nickel silver alloy, zinc silver copper alloy, stainless steel, silver-silver chloride and the like. The fixing device 20 is disposed on the band 10, the fixing device 20 fixes the device 20 on the band 10 by bonding or clipping, and the fixing device 20 is used to fix the chest electrode 30, so that the first conductive part 32 keeps in contact with the chest of the human body after the chest electrode 30 is fixed.

In the present embodiment, the chest electrode 30 is fixed to the corresponding fixing point by the belt 10 and the fixing device 20, so that the first conductive part 32 is in direct contact with the chest and can continuously apply a certain contact pressure to the contact area. Therefore, the negative pressure fixing device avoids a plurality of defects of the traditional negative pressure fixing mode, has the advantages of firm fixation, no pain absorption and no congestion trace on the surface of skin, and is beneficial to the rescue of children, old people, women with thin subcutaneous fat, obesity, large breasts and critically ill patients.

In one embodiment, the fixing device 20 is configured to allow the chest electrode 30 to have a certain range of motion, and within the range of motion, the first conductive part 32 is in contact with the chest of the human body, and the size of the detecting hole 11 can support the first conductive part 32 to move within a certain range. The fixing device 20 has both a fixing effect on the chest electrode 30 and an adjusting effect on the chest electrode 30. The electrocardiograph lead structure fixed by the belt in the embodiment can be suitable for patients with different body types to a certain extent, and the chest electrode 30 is finally fixed to an accurate detection point position by adjusting the chest electrode 30.

In one embodiment, the fixture 20 includes a base 21, an adjustment ring 22, and an adjustment frame 23.

The base 21 is fixedly disposed on the strap 10 and spans the detection hole 11, a through hole communicating with the detection hole 11 is formed in the middle of the base 21, the diameter of the through hole is larger than the width of the detection hole 11, the base 21 has a first end and a second end opposite to each other, the first end is close to the strap 10, and the second end is far away from the strap 10.

The adjusting ring 22 is sleeved on the second end of the base 21 and configured to rotate around the center line of the through hole and to keep relatively stationary with the base 21, preferably, the adjusting ring 22 is sleeved on the base 21 by interference connection, and after a proper acting force is applied to the adjusting ring 22, the adjusting ring 22 can rotate relative to the base 21. The adjusting frame 23 is fixedly arranged on the adjusting ring 22, an annular region surrounded by the adjusting frame 23 intersects with a center line of the adjusting ring 22, preferably, the annular region surrounded by the adjusting ring 22 is a rectangular region, and the center line of the adjusting ring 22 is located in a symmetrical plane of the annular region.

The chest electrode 30 is configured to move back and forth on the adjusting frame 23 along the extending direction of the adjusting frame 23, and to be kept relatively stationary with the adjusting frame 23, for example, the chest electrode 30 is mounted on the adjusting frame 23 by way of interference connection, and after applying a proper force to the chest electrode 30, the chest electrode 30 can move back and forth on the adjusting frame 23.

By rotating the adjusting ring 22 on the base 21 and moving the chest electrode 30 back and forth on the adjusting frame 23, the chest electrode 30 can be adjusted in a circular area, and such adjustment process is fast, and the chest electrode 30 can be finally positioned at the accurate detection point only by rotating the adjusting ring 22 at a proper angle and moving the chest electrode 30 at a proper distance on the adjusting frame 23.

In one embodiment, the chest electrode 30 further comprises a housing 31, a second conductive portion 33, a first elastic member 37, a lead 36 and a terminal post 34. The housing 31 is configured in a cylindrical shape, and the first conductive portion 32 is slidably provided at one end of the housing 31, and preferably, the housing 31 is an insulator, and the second conductive portion 33 is fixedly provided at the other end of the housing 31. The first elastic member 37 is disposed inside the housing 31, and is configured to cause the first conductive portion 32 to have a tendency to protrude outside the housing 31, or in other words, to cause the first conductive portion 32 to have a tendency to move away from the second conductive portion 33. The lead 36 is disposed in the housing 31, and both ends of the lead are electrically connected to the first conductive portion 32 and the second conductive portion 33, respectively, and the terminal 34 is fixedly disposed on the second conductive portion 33 and located outside the housing 31. The first conductive part 32, the conductive wire 36, the second conductive part 33 and the terminal 34 constitute a part of an electric circuit for transferring electric signals of the human body.

After the chest electrode 30 is fixed, a certain contact pressure is kept between the first conductive part 32 and the chest of the human body due to the acting force of the elastic part, so that the chest electrode 30 has a certain self-adaptability in the depth direction of the detection hole 11, and the continuous contact between the chest electrode 30 and the chest of the human body is ensured.

Preferably, the first elastic element 37 is a compression spring, the first conductive part 32 is fixedly provided with a first guiding column 321, the second conductive part 33 is fixedly provided with a second guiding column 331, the first guiding column 321 and the second guiding column 331 are both located in the housing 31, and two ends of the compression spring are respectively sleeved outside the first guiding column 321 and the second guiding column 331. The first and second guide posts 321 and 331 serve to restrict both ends of the compression spring and guide the extension or compression of the compression spring to some extent.

In one embodiment, the fixing device 20 further comprises a mounting assembly 24 for mounting the chest electrode 30, the mounting assembly 24 can move back and forth on the adjusting frame 23 along the extending direction of the adjusting frame 23 and can be kept relatively stationary with the adjusting frame 23, and the chest electrode 30 is configured to have a stroke along the extending direction of the adjusting ring 22. On the basis of the previous embodiment, the present embodiment realizes the movement of the chest electrode 30 on the adjusting frame 23 through the mounting assembly 24.

In one embodiment, the chest electrode 30 further includes two elastic arms 35 oppositely disposed outside the housing 31, one end of each elastic arm 35 is fixedly connected to the housing 31, the other end of each elastic arm 35 extends in a direction away from the second conductive portion 33, the other end of each elastic arm 35 has a claw portion 351, preferably, two mounting grooves 311 are formed on the wall of the housing 31, preferably, the mounting grooves 311 penetrate through the wall of the housing 31, the elastic arms 35 are mounted in the mounting grooves 311, and the one end of each elastic arm 35 is fixedly connected to the groove wall of one end of each mounting groove 311.

The mounting assembly 24 includes a mounting cylinder 241, the mounting cylinder 241 can move back and forth on the adjusting frame 23 along the extending direction of the adjusting frame 23, and can keep relative stationary with the adjusting frame 23, and the inner wall of the mounting cylinder 241 is provided with a plurality of teeth 2411 continuously distributed along the axial direction. The claw portion 351 is engaged with the plurality of tooth portions 2411 after contacting, and enables the chest electrode 30 to move only in the direction close to the first end of the base 21, i.e. the claw portion 351 and the tooth portions 2411 form an engaging structure similar to a ratchet and pawl, so that the chest electrode 30 can move only in the direction close to the base 21.

In this embodiment, after the position of the mounting tube 241 is adjusted to the position corresponding to the accurate detection position, the chest electrode 30 is inserted into the mounting tube 241, the insertion depth of the chest electrode 30 is gradually increased until the first conductive part 32 applies a proper contact pressure to the chest of the patient, the chest electrode 30 stops moving, and the chest electrode 30 maintains the contact pressure to the chest of the patient under the action of the one-way moving structure formed by the claw part 351 and the tooth part 2411.

In one embodiment, the housing 31 and the mounting cylinder 241 are both configured as a cylinder, the housing 31 can be inserted into the mounting cylinder 241, two rows of teeth 2411 are oppositely arranged in the mounting cylinder 241, and a gap 2412 is formed between the two rows of teeth 2411. That is, two notches 2412 are formed in the circumferential direction of the mounting cylinder 241, or the angle formed by the tooth 2411 in the circumferential direction of the mounting cylinder 241 is less than 180 °, preferably 90 °. The claw portion 351 can be rotated to the notch 2412 along the center line of the mounting cylinder 241, thereby coming out of contact with the tooth portion 2411, and enabling the chest electrode 30 to be taken out of the mounting cylinder 241 in a direction away from the first end of the base 21. When the insertion depth of the chest electrode 30 in the mounting tube 241 is too deep, which results in a large contact pressure felt by the patient, through the above-mentioned smart design, the chest electrode 30 can be taken out from the mounting tube 241 by rotating the chest electrode 30 by a certain angle, and then the chest electrode 30 is inserted into the mounting tube 241 again. By adopting the design, the problem that the patient is uncomfortable due to the fact that the chest electrode 30 is inserted too deeply can be avoided.

In one embodiment, the mounting assembly 24 further includes a clamping member 242, a magnetic member 243, and a second resilient member 244. Two clamping pieces 242 are oppositely arranged on the outer wall of the mounting tube 241, the middle part of each clamping piece 242 is hinged with the mounting tube 241, one end of each clamping piece 242, which is far away from the adjusting frame 23, is provided with a pressing part 2421, and one end of each clamping piece 242, which is close to the adjusting frame 23, is provided with a suction part 2422. The magnetic member 243 is fixedly disposed on the adjusting frame 23 and extends along the extending direction of the adjusting frame 23, preferably, the magnetic member 243 is embedded on the adjusting frame 23, and a magnetic attraction force is formed between the magnetic member 243 and the adsorption part 2422. The second elastic member 244 is configured to make the adsorption part 2422 have a tendency to approach the magnetic member 243, and preferably, the second elastic member 244 is a torsion spring. In addition, the mounting cylinder 241 is not in interference fit with the adjusting frame 23, but in clearance fit, so that the mounting cylinder 241 can be easily moved on the adjusting frame 23.

In the foregoing embodiment, although the mounting cylinder 241 may be mounted on the adjusting frame 23 by interference fit, after a long time of use, the interference fit may gradually become transition fit or clearance fit, so that the mounting cylinder 241 is difficult to be fixed on the adjusting frame 23 again. Although the adjusting ring 22 is also sleeved on the base 21 in an interference fit manner, the adjusting ring 22 and the base 21 are in contact in the circumferential direction, and the matching manner can still keep a good fixing effect even after long-term use. When the patient is in a standing state for detecting the electrocardiosignals, the mounting cylinder 241 with the fixation failure can cause the chest electrode 30 to leave the accurate detection point. By the technical solution of the present embodiment, before the mounting tube 241 is moved, the pressing portions 2421 on the two clamping members 242 are pressed by fingers, so that the adsorbing portions 2422 are separated from the corresponding magnetic members 243, then the mounting tube 241 can be easily moved, after the mounting tube 241 is moved to a correct position, the clamping members 242 are released, and the mounting tube 241 is reliably fixed on the adjusting frame 23 under the magnetic force of the adsorbing portions 2422 and the magnetic members 243.

In one embodiment, the suction part 2422 is made of a hard magnetic material, and the suction part 2422 may be wholly or partially supported by the hard magnetic material. I.e. a permanent magnetic material, such as various permanent magnets, and the magnetic member 243 is made of a soft magnetic material, such as a silicon steel sheet. The magnetic member 243 is installed on the adjusting frame 23, and the length is longer than the adsorption part 2422, so the magnetic member 243 is made of soft magnetic material, and the adsorption part 2422 is made of hard magnetic material, which makes the design more reasonable.

In one embodiment, the base 21 includes a main body portion 211 and two opposite bonding portions 212, the bonding portions 212 extend outward along an outer side of the main body portion 211, the bonding portions 212 are bonded to the strap 10, the bonding portions 212 may be bonded to the strap 10 by means of a hook and loop fastener, or bonded to the strap 10 by means of glue, preferably by means of a hook and loop fastener, so that the position of the base 21 can be adjusted appropriately.

In one embodiment, the terminal 34 is provided with a first plug 341 for plug connection with banana and a second plug 342 for plug connection with pin, so as to be used for connection with banana plug or pin plug, and thus to be used for connection with banana plug or pin plug.

In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (10)

1. A electrocardiograph lead structure fixed by a belt is characterized by comprising:

the chest strap (10) is detachably connected with two ends of the chest strap (10), a detection hole (11) is formed in the chest strap (10), the detection hole (11) penetrates through the chest strap (10) along the thickness direction, and the detection hole (11) is provided with a first detection area (12) corresponding to the left side of the chest of a human body and a second detection area (13) corresponding to the right side of the chest of the human body;

a chest electrode (30), the chest electrode (30) comprising a first conductive portion (32) for direct contact with a human chest, the first conductive portion (32) being passable through the inspection hole (11); and

a fixing device (20), wherein the fixing device (20) is arranged on the belt (10) and is used for fixing the chest electrode (30) and keeping the first conducting part (32) in contact with the chest of the human body.

2. The electrocardiograph lead structure fixed with a strap according to claim 1, wherein the fixing device (20) is configured to allow the chest electrode (30) to have a range of motion in which the first conductive portion (32) is held in contact with the human chest.

3. The electrocardiograph lead structure fixed with a belt according to claim 2, wherein the fixing means (20) comprises:

a base (21), the base (21) is fixedly arranged on the strap (10) and crosses the detection hole (11), a through hole communicated with the detection hole (11) is arranged in the middle of the base (21), the base (21) is provided with a first end and a second end which are opposite, the first end is close to the strap (10), and the second end is far away from the strap (10);

an adjusting ring (22), wherein the adjusting ring (22) is sleeved on the second end of the base (21) and is configured to rotate around the central line of the through hole and keep relative static with the base (21); and

the adjusting frame (23) is fixedly arranged on the adjusting ring (22), and an annular area defined by the adjusting frame (23) is intersected with the central line of the adjusting ring (22);

the chest electrode (30) is configured to be capable of moving back and forth on the adjusting frame (23) along the extending direction of the adjusting frame (23) and keeping relative static with the adjusting frame (23).

4. The electrocardiograph lead structure fixed with a belt according to claim 3, wherein the chest electrode (30) further comprises:

a housing (31), wherein the housing (31) is configured to be cylindrical, and one end of the housing (31) is provided with the first conductive part (32) in a sliding manner;

a second conductive section (33), wherein the second conductive section (33) is fixedly arranged at the other end of the housing (31);

a first elastic member (37), said first elastic member (37) being disposed inside said housing (31) and being configured to give said first conductive portion (32) a tendency to protrude outside said housing (31);

a wire (36), wherein the wire (36) is arranged in the housing (31), and both ends of the wire are respectively electrically connected with the first conductive part (32) and the second conductive part (33); and

a terminal (34), wherein the terminal (34) is fixedly arranged on the second conductive part (33) and is positioned outside the shell (31).

5. The electrocardiograph lead structure fixed with a strap according to claim 4, wherein the fixing device (20) further includes a mounting assembly (24) for mounting the chest lead electrode (30), the mounting assembly (24) can move back and forth on the adjusting frame (23) in the extending direction of the adjusting frame (23) and can be kept relatively stationary with the adjusting frame (23), the chest lead electrode (30) is configured to have a stroke in the extending direction of the adjusting ring (22).

6. The electrocardiograph lead structure fixed by a strap according to claim 5, wherein the chest electrode (30) further comprises two elastic arms (35) oppositely arranged outside the housing (31), one end of the elastic arm (35) is fixedly connected with the housing (31), the other end extends in a direction away from the second conductive part (33), and the other end of the elastic arm (35) is provided with a claw part (351);

the mounting assembly (24) comprises a mounting cylinder (241), the mounting cylinder (241) can move back and forth on the adjusting frame (23) along the extending direction of the adjusting frame (23) and can keep relative static with the adjusting frame (23), and the inner wall of the mounting cylinder (241) is provided with a plurality of tooth parts (2411) which are continuously distributed along the axial direction;

the claw part (351) is matched with the plurality of tooth parts (2411) after being contacted, and the chest electrode (30) can only move along the direction close to the first end of the base (21).

7. The electrocardiograph lead structure fixed by a strap according to claim 6, wherein the housing (31) and the mounting cylinder (241) are configured in a cylindrical shape, the housing (31) can be inserted into the mounting cylinder (241), the teeth (2411) are oppositely arranged in two rows in the mounting cylinder (241), and a gap (2412) is formed between the two rows of teeth (2411);

the claw part (351) can rotate to the notch (2412) along the central line of the mounting cylinder (241), so as to be separated from the tooth part (2411), and the chest electrode (30) can be taken out of the mounting cylinder (241) along the direction away from the first end of the base (21).

8. The electrocardiograph lead structure fixed with a belt according to claim 6, wherein the mounting assembly (24) further comprises:

two clamping pieces (242) oppositely arranged on the outer wall of the mounting tube (241), the middle of each clamping piece (242) is hinged with the mounting tube (241), one end, far away from the adjusting frame (23), of each clamping piece (242) is provided with a pressing part (2421), and one end, close to the adjusting frame (23), of each clamping piece (242) is provided with an adsorption part (2422);

a magnetic member (243), wherein the magnetic member (243) is fixedly arranged on the adjusting frame (23) and extends along the extending direction of the adjusting frame (23), and a magnetic attraction force is formed between the magnetic member (243) and the adsorption part (2422); and

a second elastic member (244), the second elastic member (244) being configured to cause the adsorption part (2422) to have a tendency to approach the magnetic member (243).

9. The electrocardiograph lead structure fixed with a strap according to claim 8, wherein the adsorption portion (2422) is made of hard magnetic material and the magnetic member (243) is made of soft magnetic material.

10. The electrocardiograph lead structure fixed by a belt according to any one of claims 3 to 9, wherein the base (21) comprises a body portion (211) and two oppositely disposed adhesive portions (212), the adhesive portions (212) extend outward along the outer side of the body portion (211), and the adhesive portions (212) are adhered to the belt (10).

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