A slippable fitting structure and an electrocardio lead electrode fixing belt suitable for children

Abstract

The utility model discloses a purpose lies in providing a kind of slippable structure and containing the structure of the electrocardio lead electrode fixing band suitable for children.The fixing band is connected between electrode piece and bandage main body by a kind of slippable structure on the basis of the structure form of common elastic band, can realize even bandage whole and the situation of the shift of user body, effectively reduce the shift of electrode piece, guarantee the accuracy of pole piece adhesion detection position, to improve the stability and accuracy of electrocardio lead equipment detection reading signal.

Description

Technical Field

[0001] This utility model relates to the field of electrocardiogram (ECG) lead device products, specifically a slidable fitting structure and an ECG lead electrode fixing strap for children incorporating the structure. Background Technology

[0002] Electrocardiogram (ECG) leads, as a common medical device used to detect and record electrocardiogram (ECG) signals, can accurately capture ECG signals, reflect the electrophysiological characteristics of the heart, and assist doctors in diagnosing heart diseases such as arrhythmias and coronary artery insufficiency. They also provide real-time monitoring in operating rooms, ICUs, and other settings, offering medical personnel crucial information about the heart's condition. With the continuous development and iteration of ECG leads, various products with differentiated structures and functions can be tailored to different practical application needs. A key technical focus in the development of ECG lead technology is ensuring stable contact between the electrode terminals used to read data and the user's body during use in various scenarios. Common methods for fixing the electrode pads include using adhesive tape, suction cups, or elastic bands.

[0003] For example, Chinese utility model patent application CN201420691162.X discloses a neonatal non-invasive electrocardiogram (ECG) chest lead electrode fixation device, comprising a soft fixation band. One end of the fixation band is an elastic bandage with Velcro, and the other end consists of multiple electrode distribution strips, each with Velcro. Chest lead electrode connection devices are provided on each electrode distribution strip. These connection devices are rod-shaped, with a smooth bottom surface and an electrode insertion hole at the top. This product solution effectively reduces the impact of infant crying on the accuracy of ECG data reading during ECG examinations, saves examination time, and improves the reliability of ECG results. For example, the electrocardiogram chest lead electrode fixing device disclosed in Chinese invention patent application document with application number CN202010007781.2 adopts an elastic mesh structure that can be extended and adjusted in all directions, so that the chest lead is pressed and fixed in place by the elastic mesh band of the lead, and does not move in the test site of the subject, thus avoiding the problems of detachment, movement or displacement.

[0004] For children, who are smaller and have more delicate skin, elastic bandages similar to those described above are generally used to secure the electrode pads to avoid skin damage caused by prolonged application and removal of adhesive tape or suction cup devices. However, the applicant found that while these existing ECG lead fixation devices can reduce skin damage, children are more active and harder to restrain than adults. Therefore, during use, the twisting or turning of the child user can cause the body and elastic bandage to shift, leading to a misalignment of the electrode pads. This can easily affect the continuity of the electrical signals read by the electrode pads or even result in a complete misalignment, impacting the accuracy of ECG lead detection and posing a significant safety risk to the patient.

[0005] To address the aforementioned problems, this invention provides a sliding fit structure and a pediatric ECG electrode fixing band incorporating this structure. Based on a common elastic band structure, this fixing band connects the electrode pads to the band body via a sliding fit structure. This effectively minimizes electrode pad offset even when the band as a whole rotates or shifts relative to the user's body, ensuring accurate electrode fit and detection, thereby improving the stability and accuracy of the ECG lead detection signal. Utility Model Content

[0006] This invention provides a sliding fit structure and a pediatric ECG electrode fixing band incorporating this structure. Based on a common elastic band structure, the fixing band connects the electrode pads to the band body via a sliding fit structure. This effectively reduces electrode pad offset even when the band as a whole rotates or shifts relative to the user's body, ensuring accurate electrode fit and detection, thereby improving the stability and accuracy of the ECG lead detection signal.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A sliding fit structure includes an annular connecting seat for fixed connection with an elastic bandage. The annular connecting seat has a through mounting cavity at its center and a sliding engagement piece for mounting electrode pads. The inner side of the annular connecting seat has a recessed annular slot, and the outer periphery of the sliding engagement piece has an annular insertion portion corresponding to the annular slot. The bottom of the sliding engagement piece has a downwardly protruding cylindrical connecting section, and an anti-slip structural layer is provided at the bottom of the cylindrical connecting section. When the annular connecting seat is subjected to a downward force from the elastic bandage, causing the anti-slip structural layer to fit tightly and fix to the skin surface, the annular insertion portion is engaged in the annular slot, allowing the sliding engagement piece to translate relative to the annular connecting seat.

[0009] As a preferred embodiment of the present invention, a lubricating material layer is provided on the lower surface of the annular slot that abuts against the sliding engagement piece.

[0010] As a preferred embodiment of the present invention, when the annular insertion part moves to the point where its edge abuts against the inner wall of the annular slot, all parts of the annular insertion part remain engaged with the annular slot to prevent the sliding engagement piece from dislodging from the annular connecting seat.

[0011] An electrocardiogram (ECG) electrode fixation strap for children includes an elastic band for wrapping around the user's torso and electrode pads for conforming to the detection locations on the user's body surface. The elastic band has several aforementioned slip-fitting structures. The elastic band is connected and fixed to the outer side of an annular connecting seat. An anti-slip structure layer is annularly fitted to the bottom surface of the cylindrical connecting section. The electrode pads are fitted to the bottom surface of the cylindrical connecting section and located in the central region of the annular anti-slip structure layer.

[0012] As a preferred embodiment of the present invention, the anti-slip structural layer is made of an elastic, skin-friendly material and its thickness in the vertical direction is greater than the thickness of the electrode sheet.

[0013] As a preferred embodiment of the present invention, the anti-slip structural layer is further provided with breathable pores that penetrate its inner and outer side walls.

[0014] As a preferred embodiment of the present invention, the top of the sliding joint piece is further provided with a transmission wire that extends outward and whose front end engages with the electrode piece.

[0015] As a preferred embodiment of the present invention, Velcro adhesive structures are provided at both ends of the elastic strap.

[0016] In summary, this utility model can achieve the following beneficial effects:

[0017] This utility model application discloses a sliding fit structure and a pediatric ECG electrode fixing band incorporating this structure. Based on a common elastic band structure, the fixing band connects the electrode pads to the band body via a sliding fit structure. This effectively reduces the electrode pad offset even when the band as a whole rotates or shifts relative to the user's body, ensuring accurate electrode fit and detection, thereby improving the stability and accuracy of the ECG lead detection signal. Attached Figure Description

[0018] Figure 1 A schematic diagram showing the overall structural layout of the ECG lead electrode fixation strap suitable for children;

[0019] Figure 2 This is a schematic diagram of the sliding and fitting structure from a top-down view.

[0020] Figure 3 A cross-sectional schematic diagram of a sliding and fitting structure;

[0021] Figure 4 This is a schematic cross-sectional view of the sliding and fitting structure in an offset state.

[0022] Figure 5 This is a magnified schematic diagram of region A in the cross-sectional view of the sliding and fitting structure.

[0023] In the picture:

[0024] 1—Sliding fit structure, 101—Annular connector, 1011—Mounting cavity, 1012—Annular slot, 102—Sliding engagement piece, 1021—Annular insertion part, 1022—Cylindrical connecting section, 103—Anti-slip structure layer, 1031—Ventilating pores, 104—Lubricating material layer.

[0025] 2—Elastic straps;

[0026] 3—Electrode plate;

[0027] 4—Transmission wire;

[0028] 5 - Hook and loop fastener structure. Detailed Implementation

[0029] The following specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

[0030] This solution is achieved through the following technical means:

[0031] Example: This example provides a sliding fit structure and a pediatric ECG electrode fixation strap incorporating this structure. Based on a common elastic band structure, the strap connects the electrode pads 3 to the main body of the strap via a sliding fit structure 1. This effectively reduces the offset of the electrode pads 3 even when the strap as a whole rotates or shifts relative to the user's body, ensuring accurate electrode fit and detection, thereby improving the stability and accuracy of the ECG lead detection signal.

[0032] Specifically, the overall structural layout of this pediatric ECG lead electrode fixation strap can be found in the instruction manual. Figure 1 The structure shown illustrates its main components. This fixation strap product primarily comprises an elastic band 2 for wrapping around the user's torso. Both ends of the elastic band 2 are equipped with a loop and hook area in the Velcro adhesive structure 5, allowing the elastic band 2 to be wrapped and fixed with an appropriate overlapping area according to the actual size of the child user's torso. Several sliding contact structures 1 corresponding to the ECG detection area are arranged on the elastic band 2. After the ECG lead electrode fixation strap for children is wrapped and fixed to the user, the sliding contact structure 1 ensures that the electrode pads 3 installed underneath are in close contact with the user's skin. Even when the user's torso twists or shifts slightly with the elastic band 2, it maintains the relative position of the electrode pads 3 to the skin at the initial contact position as much as possible, thus ensuring continuous, stable, accurate, and reliable signal readings from the ECG lead device.

[0033] For the aforementioned sliding bonding structure 1, please refer to the appendix of the instruction manual. Figure 2-5The cross-sectional structural diagram shown is used for detailed illustration. This structure mainly includes an annular connecting seat 101 for fixed connection with the elastic strap 2, with a through mounting cavity 1011 at its center; it also includes a sliding engagement piece 102 movably mounted inside the annular connecting seat 101. The main body of the sliding engagement piece 102 is disc-shaped, with an annular insertion portion 1021 on its outer periphery. A recessed annular slot 1012 is formed on the inner side of the annular connecting seat 101. The structure of the annular insertion portion 1021 corresponds to the structure of the annular slot 1012, allowing the annular insertion portion 1021 to be inserted into the annular slot 1012. At this time, since the surface of the annular insertion part 1021 abuts against the upper and lower inner walls of the annular slot 1012, and an annular gap area is formed between the outer peripheral wall of the annular insertion part 1021 and the inner wall of the annular slot 1012, the sliding engagement piece 102 can achieve translational movement in the horizontal direction relative to the annular connecting seat 101. Furthermore, a downwardly protruding cylindrical connecting section 1022 is formed at the bottom of the sliding engagement piece 102, and an anti-slip structural layer 103 and an electrode plate 3 for reading electrocardiogram signals are fixedly disposed on the bottom surface of this cylindrical connecting section 1022. Specifically, the anti-slip structural layer 103 is annularly fitted to the bottom surface of the cylindrical connecting section 1022, and the electrode plate 3 is fitted to the bottom surface of the cylindrical connecting section 1022 and located in the central region of the annular anti-slip structural layer 103. A transmission wire 4, extending outward and engaging with the electrode plate 3, is also provided on the top of the sliding engagement piece 102. When the electrode plate 3 is in contact with the local area to be detected on the child user's skin, image data signals can be obtained by connecting the transmission wire 4 to an external reading and analysis device. The anti-slip structural layer 103 can be made of an elastic, skin-friendly material such as silicone to ensure sufficient friction when in contact with the skin, preventing the sliding engagement piece 102, which serves as the base for fixing the electrode plate 3, from shifting from its initial contact area with the user's skin.

[0034] It is important to note that the relative dimensions of the annular insertion part 1021 and the annular slot 1012 need to be controlled to ensure that when the annular insertion part 1021 moves to the point where its edge abuts against the inner wall of the annular slot 1012, all parts of the annular insertion part 1021 remain engaged with the annular slot 1012, so as to prevent the sliding engagement piece 102 from dislodging from the annular connecting seat 101.

[0035] The aforementioned structure, when practically applied to the ECG lead electrode fixation strap, functions as follows: when the elastic bandage 2 is wrapped around the user's body in a pre-stretched state, the elastic bandage 2 tends to contract and recover, thus creating a centripetal squeezing force between it and the user's body. This force, on the one hand, generates a frictional force between the elastic bandage 2 and the user's body to prevent deflection; on the other hand, this force is also transmitted to the cylindrical connecting section 1022 through the aforementioned slip-fitting structure 1. At this time, the electrode pad 3 and the anti-slip structural layer 103 located at the bottom of the cylindrical connecting section 1022 will fit tightly against the skin surface.

[0036] When using ECG lead devices on children, especially infants, they are usually placed in a supine position to limit their range of motion. However, because these users are often very active, and their bodies are still in contact with the bed or support platform below, the elastic strap 2 worn on them will shift to some extent from the user's torso due to the pulling force generated by external friction when they twist or roll over. In the conventional structure where the electrode pads 3 are directly fixed to the straps, this shift in the elastic strap 2, which serves as the horizontal positioning base for the electrode pads 3, will inevitably cause the electrode pads 3 to shift as well. Consequently, the electrode pads 3 cannot continuously detect and read electrical signals at the target location on the user's body surface, thus affecting the operation of the ECG lead device.

[0037] In the ECG lead electrode fixation band for children provided in this embodiment, the local positioning and fixation of the electrode pad 3 to the user's skin relies on the frictional force between the anti-slip structural layer 103 and the skin, while the elastic band 2 actually only provides a centripetal squeezing force to the electrode pad 3. Under this structure, when the elastic band 2 is slightly displaced by external force due to the child's activity, the annular connecting seat 101 fixedly connected to the elastic band 2 in the sliding fitting structure 1 is allowed to move horizontally relative to the sliding engagement piece 102 fixedly connected to the electrode pad 3. Therefore, the displacement of the elastic band 2 is not transmitted to the electrode pad 3, thus largely maintaining the electrode pad 3 in the initial detection fitting position. This greatly optimizes the stability and accuracy of the electrode pad 3 in reading the user's surface electrical signals, solving the problems existing in the aforementioned situations.

[0038] The inventors also discovered that the offset transmitted to the electrode plate 3 can be further reduced by continuing to reduce the friction in the horizontal direction of the interlocking structure between the annular connector 101 and the sliding engagement piece 102. Therefore, as a preferred structure, a lubricating material layer 104 made of materials such as petroleum jelly or agar can also be provided on the lower surface of the annular slot 1012 that abuts against the sliding engagement piece 102.

[0039] In a further preferred embodiment, in order to ensure that the anti-slip structure layer 103 contacts the user's body surface before the surface of the electrode sheet 3, so that the anti-slip structure layer 103 can be compressed and fit together when the ECG lead electrode fixing band suitable for children is worn around the body and provides a greater frictional limiting effect, the inventors set the thickness of the anti-slip structure layer 103 in the vertical direction to be greater than the thickness of the electrode sheet 3.

[0040] On the other hand, the inventors also considered that when the annular anti-slip structural layer 103 adheres tightly to the skin surface, it creates a relatively enclosed space. This lack of airflow in the enclosed space hinders sweat evaporation, affecting not only the user experience but also potentially causing the friction-limiting function of the structural layer to fail. Therefore, referring to the appendix to the instruction manual... Figure 5 The enlarged schematic diagram shows that, in this embodiment, the annular anti-slip structure layer 103 is further provided with breathable pores 1031 that penetrate its inner and outer walls to solve the above-mentioned problems.

[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sliding bonding structure, characterized in that: The device includes an annular connecting seat (101) for fixed connection with an elastic strap (2), wherein the annular connecting seat (101) has a through mounting cavity (1011) at its center, and also includes a sliding engagement piece (102) for mounting electrode plates (3). The annular connecting seat (101) has a recessed annular slot (1012) on its inner side, and the sliding engagement piece (102) has an annular insertion portion (1021) corresponding to the annular slot (1012) on its outer periphery; the sliding engagement piece (1012) has a through mounting cavity (1011) at its center, and the sliding engagement piece (101 ... cavity (1021) corresponding to the annular slot (1012) on its outer periphery, and the sliding engagement piece (1012) has an annular insertion cavity (1021) corresponding to the annular slot (1012) on its outer periphery, and the sliding engagement piece (1012) has an annular insertion cavity (1021) corresponding to the annular slot (1012) on its outer periphery, and the sliding engagement piece (1012) has an annular insertion cavity (1011) for fixed connection with an elastic strap (2), wherein the sliding engagement piece (1012) has an annular insertion cavity (1011) for fixed connection with an elastic strap (2), wherein the sliding engagement piece 2) has a downwardly protruding cylindrical connecting section (1022) at the bottom, and an anti-slip structural layer (103) is also provided at the bottom of the cylindrical connecting section (1022); when the annular connecting seat (101) is subjected to the downward force of the elastic strap (2) and the anti-slip structural layer (103) is tightly attached and fixed to the skin surface, the annular insertion part (1021) is fitted into the annular slot (1012) and allows the sliding engagement piece (102) to translate relative to the annular connecting seat (101).

2. The slidable bonding structure according to claim 1, characterized in that: A lubricating material layer (104) is provided on the lower surface of the annular slot (1012) for abutting against the sliding engagement piece (102).

3. The slidable bonding structure according to claim 2, characterized in that: When the annular plug (1021) moves to the point where its edge abuts against the inner wall of the annular slot (1012), the annular plug (1021) remains engaged with the annular slot (1012) to prevent the sliding engagement piece (102) from dislodging from the annular connector (101).

4. A cardiac electrode fixation strap suitable for children, comprising an elastic band (2) for wrapping around the user's torso and electrode pads (3) for conforming to the detection location on the user's body surface, characterized in that: The elastic strap (2) is provided with several sliding fit structures (1) as described in any one of claims 1-3. The elastic strap (2) is connected and fixed to the outer side of the annular connecting seat (101). The anti-slip structure layer (103) is annularly fitted to the bottom surface of the cylindrical connecting section (1022). The electrode sheet (3) is fitted to the bottom surface of the cylindrical connecting section (1022) and located in the central area of ​​the annular anti-slip structure layer (103).

5. The ECG lead electrode fixing strap for children according to claim 4, characterized in that: The anti-slip structure layer (103) is made of an elastic, skin-friendly material and its thickness in the vertical direction is greater than that of the electrode sheet (3).

6. The ECG lead electrode fixing strap for children according to claim 5, characterized in that: The anti-slip structural layer (103) is also provided with breathable pores (1031) that penetrate its inner and outer walls.

7. The ECG lead electrode fixing strap for children according to claim 6, characterized in that: The top of the sliding joint piece (102) is also provided with a transmission wire (4) that extends outward and whose front end is engaged with the electrode piece (3).

8. The ECG lead electrode fixation strap for children according to claim 7, characterized in that: Velcro adhesive structures (5) are provided at both ends of the elastic strap (2).

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