Anti-falling structure of electrocardiogram lead wire

Abstract

This utility model relates to an anti-dislodgement structure for electrocardiogram (ECG) leads, comprising a pin body and a conductive terminal. The pin body, from front to back, includes an insulating part, a conductive rod, and a screw. The conductive terminal is movably sleeved on the outside of the conductive rod. A nut is threadedly connected to the outside of the screw, and a rubber ring is provided between the nut and the conductive terminal. Several anti-slip strips are provided on the outside of the nut. This anti-dislodgement structure for ECG leads, through the threaded connection between the nut and the screw and the auxiliary function of the rubber ring, achieves initial fixation of the conductive terminal. Combined with the double locking of the nut by the locking element, it greatly improves the stability of the lead connection, effectively solving the problem of easy loosening and dislodgement with traditional pin methods. This reduces the need for ECG waveform abnormalities due to lead dislodgement, necessitating investigation or re-acquisition, and saves time and costs.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an anti-detachment structure for electrocardiogram (ECG) lead wires. Background Technology

[0002] In the field of medical device technology, electrocardiography (ECG) is an important means of clinical diagnosis, and the stability and reliability of the equipment directly affect the accuracy of the diagnostic results. A 12-lead ECG simultaneously acquires cardiac electrical activity signals through multiple leads, providing crucial evidence for the diagnosis of heart diseases. The stability of the lead wires, as the key component connecting the ECG machine to the human body, is paramount.

[0003] Currently, most ECG leads on the market are connected by directly plugging the pin into the terminals of the suction bulb or clamp. However, this traditional connection method has obvious drawbacks. Loosening can easily occur between the pin and the needle, causing the lead to detach from the suction bulb or clamp. In scenarios involving remote ECG acquisition or ECG acquisition by ward nurses, the operators are often personnel with only basic training. They often only know the basic operating procedures and lack the ability to interpret ECGs. When lead connections are incorrect, these staff members unfamiliar with lead connections are unlikely to notice, resulting in erroneous ECGs. Such erroneous ECGs may not only be misdiagnosed as serious diseases such as myocardial infarction, increasing the patient's psychological and financial burden, but also force doctors with professional knowledge to spend a lot of time checking historical records and contacting the operating doctor and patient to re-acquire the data, resulting in a significant waste of medical resources.

[0004] During bedside electrocardiogram (ECG) examinations, it is common for the suction bulb to detach and fall onto the patient's bed. Because the operator may not notice it immediately, they need to return to retrieve it, which undoubtedly increases time costs. Existing fixation methods also have many shortcomings. For example, Chinese Patent Publication No. CN215384106U describes a novel ECG lead fixing device that uses a clamping method to fix the pin. Traditional clamping methods are not only cumbersome to operate, but also prone to detachment under external force. Another example is Chinese Patent Publication No. CN117562548A, a novel ECG machine chest lead connection device that uses magnetic attraction to fix the pin. While magnetic attraction offers relatively better anti-detachment performance, it relies on magnets, leading to higher costs. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an anti-dislodgement structure for electrocardiogram (ECG) leads, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-dislodgement structure for electrocardiogram lead wires, comprising a pin body and conductive terminals;

[0007] The main body of the pin, from front to back, includes an insulating part, a conductive rod, and a screw;

[0008] The conductive terminal is movably sleeved on the outside of the conductive rod, and a nut is threadedly connected to the outside of the screw rod. A rubber ring is provided between the nut and the conductive terminal.

[0009] The outer side of the nut is provided with several anti-slip strips, and the insulating part is equipped with a locking member that works in conjunction with the uppermost anti-slip strip.

[0010] Furthermore, the outer diameter of the screw is smaller than the outer diameter of the conductive rod.

[0011] Furthermore, both the screw and the nut are made of stainless steel.

[0012] Furthermore, the locking member includes two mounting seats symmetrically arranged on the upper side of the outer surface of the insulating part, a connecting shaft is provided between the two mounting seats, a sleeve is movably sleeved on the outside of the connecting shaft, a connecting plate is provided on the rear side of the outer surface of the sleeve, and a locking plate is integrally formed at the end of the connecting plate away from the sleeve.

[0013] A square opening is provided inside the locking plate, and the uppermost anti-slip strip is inserted into the square opening.

[0014] Furthermore, the length and width of the anti-slip strip are smaller than the length and width of the square opening, respectively.

[0015] Furthermore, a pressure plate is provided on the outer side of the sleeve and on the side opposite to the connecting plate;

[0016] The cross-sectional shape of the left side of the connecting plate is an arc shape with the middle lower than the two sides.

[0017] Furthermore, a torsion spring is fixedly installed on both the left and right sides of the sleeve, and the ends of the two torsion springs away from the sleeve are respectively connected to the two mounting bases.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] 1. The anti-dislodgement structure of this ECG lead wire achieves initial fixation of the conductive terminals through the threaded connection of the nut and screw and the auxiliary function of the rubber ring. In addition, the locking device double-locks the nut, which greatly improves the stability of the lead wire connection. It effectively solves the problem of easy loosening and dislodgement of traditional pin methods, reduces the occurrence of ECG waveform abnormalities caused by lead wire dislodgement, and saves time and costs.

[0020] 2. The anti-dislodgement structure of the ECG lead reduces the time spent troubleshooting when the ECG lead falls off during operation, such as when the ECG waveform fails to appear, or when the ECG lead accidentally falls onto the patient's bedside and is not noticed, requiring a trip back to retrieve it. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0023] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0024] In the diagram: 1. Pin body; 101. Insulating part; 102. Conductive rod; 103. Screw; 2. Conductive terminal; 3. Nut; 4. Rubber ring; 5. Anti-slip strip; 6. Locking part; 601. Insulating part; 602. Connecting shaft; 603. Sleeve; 604. Connecting plate; 605. Locking plate; 606. Lower pressure plate; 607. Torsion spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-3 In this embodiment, an anti-dislodgement structure for electrocardiogram leads is provided to increase the stability of the connection between the insert body 1 and the conductive terminal 2 on the suction bulb or limb clip.

[0027] Specifically, it includes a pin body 1 and a conductive terminal 2; the pin body 1 includes, from front to back, an insulating part 101, a conductive rod 102 and a screw 103;

[0028] The conductive terminal 2 is movably sleeved on the outside of the conductive rod 102. A nut 3 is threadedly connected to the outside of the screw 103. A rubber ring 4 is provided between the nut 3 and the conductive terminal 2. Several anti-slip strips 5 are provided on the outside of the nut 3. A locking part 6 that works with the uppermost anti-slip strip 5 is installed on the insulating part 101.

[0029] In actual setup, by rotating the nut 3, the conductive terminal 2 can be fixed on the conductive rod 102, preventing the conductive terminal 2 from detaching from the pin body 1, thus achieving mechanical locking of the conductive terminal 2 and greatly improving the stability of the lead wire connection.

[0030] In addition, by installing a rubber ring 4 between the nut 3 and the conductive terminal 2, the sealing between the nut 3 and the conductive terminal 2 is enhanced, and the friction is increased to prevent the nut 3 from loosening, which further improves the stability of the connection and reduces the possibility of the lead wire falling off due to the loosening of the nut 3.

[0031] Furthermore, the anti-slip strip 5 on the outer side of the nut 3 increases the friction when the operator rotates the nut 3, making it easier to apply force and making the operation more convenient and faster.

[0032] In actual setup, the outer diameter of screw 103 is smaller than the outer diameter of conductive rod 102, and both screw 103 and nut 3 are made of stainless steel.

[0033] Specifically, in order to lock the nut 3 and prevent the lead wire from falling off due to loosening of the nut 3, the locking member 6 in this embodiment includes two mounting seats 601 symmetrically arranged on the upper side of the outer surface of the insulating part 101. A connecting shaft 602 is arranged between the two mounting seats 601. A sleeve 603 is movably sleeved on the outside of the connecting shaft 602. A connecting plate 604 is arranged on the rear side of the outer surface of the sleeve 603. A locking plate 605 is integrally formed at the end of the connecting plate 604 away from the sleeve 603. A square opening is opened inside the locking plate 605, and the uppermost anti-slip strip 5 is inserted into the square opening.

[0034] In actual installation, the length and width of the anti-slip strip 5 are smaller than the length and width of the square opening, respectively.

[0035] In addition, in order to facilitate the rotation of the sleeve 603, a pressure plate 606 is provided on the outer side of the sleeve 603 and on the side opposite to the connecting plate 604. The cross-sectional shape of the left side of the connecting plate 604 is an arc shape with the middle lower than the two sides.

[0036] Furthermore, in order to facilitate the automatic reset of the connecting plate 604 and the locking plate 605 when the pressure plate 606 is released, a torsion spring 607 is fixedly installed on both the left and right sides of the sleeve 603 in this embodiment. The ends of the two torsion springs 607 away from the sleeve 603 are respectively connected to the two mounting seats 601.

[0037] In actual use, when it is necessary to connect the lead wire to the suction ball or the four-limb clamp, first put the conductive terminal 2 on the conductive rod 102 of the pin body 1, and then screw the nut 3 on the screw 103. During the process of screwing the nut 3, the rubber ring 4 is squeezed, which increases the friction and sealing between the nut 3 and the conductive terminal 2, so that the conductive terminal 2 is firmly fixed on the conductive rod 102.

[0038] During the tightening process of nut 3, the operator presses down on the pressure plate 606, causing the sleeve 603 to rotate around the connecting shaft 602, which in turn lifts the connecting plate 604 and the locking plate 605 upwards. At this time, the rotation of the sleeve 603 will simultaneously compress the torsion springs 607 on both sides, causing the torsion springs 607 to undergo elastic deformation and accumulate a restoring torque. After nut 3 is tightened to the correct position, the pressure plate 606 is released, and the torsion springs 607 automatically rebound due to their elastic potential energy, causing the sleeve 603 to rotate in the opposite direction around the connecting shaft 602, which in turn pushes the connecting plate 604 and the locking plate 605 to rotate in the direction of nut 3. At this time, the locking plate 605 wraps around the outside of the anti-slip strip 5, thereby locking the anti-slip strip 5 in the square opening and achieving mechanical limitation of nut 3.

[0039] When it is necessary to disassemble the lead wire, the operator presses down the pressure plate 606, causing the sleeve 603 to rotate around the connecting shaft 602, the locking plate 605 to move upward, releasing the lock on the anti-slip strip 5, and then twisting the nut 3 in the opposite direction to remove it from the screw 103, so that the conductive terminal 2 can be removed from the pin body 1, completing the disassembly.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structure for preventing the dislodgement of electrocardiogram (ECG) lead wires, characterized in that: It includes a pin body (1) and a conductive terminal (2); The pin body (1) includes, from front to back, an insulating part (101), a conductive rod (102) and a screw (103); The conductive terminal (2) is movably sleeved on the outside of the conductive rod (102), and a nut (3) is threadedly connected to the outside of the screw (103). A rubber ring (4) is provided between the nut (3) and the conductive terminal (2). The outer side of the nut (3) is provided with several anti-slip strips (5), and the insulating part (101) is equipped with a locking member (6) that works in conjunction with the uppermost anti-slip strip (5).

2. The anti-dislodgement structure for electrocardiogram lead wires according to claim 1, characterized in that: The outer diameter of the screw (103) is smaller than the outer diameter of the conductive rod (102).

3. The anti-dislodgement structure for electrocardiogram lead wires according to claim 1, characterized in that: Both the screw (103) and the nut (3) are made of stainless steel.

4. The anti-dislodgement structure for electrocardiogram lead wires according to claim 1, characterized in that: The locking member (6) includes two mounting seats (601) arranged symmetrically on the upper side of the outer surface of the insulating part (101), a connecting shaft (602) is provided between the two mounting seats (601), a sleeve (603) is movably sleeved on the outside of the connecting shaft (602), a connecting plate (604) is provided on the rear side of the outer surface of the sleeve (603), and a locking plate (605) is integrally formed at the end of the connecting plate (604) away from the sleeve (603); A square opening is provided inside the locking plate (605), and the uppermost anti-slip strip (5) is inserted inside the square opening.

5. The anti-dislodgement structure for electrocardiogram lead wires according to claim 4, characterized in that: The length and width of the anti-slip strip (5) are smaller than the length and width of the square opening, respectively.

6. The anti-dislodgement structure for electrocardiogram lead wires according to claim 4, characterized in that: A pressure plate (606) is provided on the outer side of the sleeve (603) and on the side opposite to the connecting plate (604); The cross-sectional shape of the left side of the connecting plate (604) is an arc shape with the middle and both sides being low.

7. The anti-dislodgement structure for electrocardiogram lead wires according to claim 4, characterized in that: A torsion spring (607) is fixedly installed on both the left and right sides of the sleeve (603), and the ends of the two torsion springs (607) away from the sleeve (603) are respectively connected to the two mounting seats (601).

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