Connector structure of electrocardiograph monitor lead wire

Abstract

The utility model relates to the technical field of medical instruments, in particular to a connector structure of a lead wire of an electrocardiograph monitor, which comprises a fixing block, a circuit board is arranged in the fixing block, a cable and a plurality of elastic sheets are respectively welded at two ends of the circuit board, and each elastic sheet comprises a connecting section and a plurality of contact sections which are fixedly connected with the connecting section and are arranged side by side. The cable, the fixing block and the framework are coated with an outer film formed through injection molding after being assembled, the contact section extends into the framework to form a plurality of contact points, the elastic piece can replace conduction connection of a plurality of independent contact pins in the prior art, the cable and the elastic piece are connected through a circuit board, the electrical performance is stable and reliable, and the service life of the cable is prolonged. And each elastic sheet is provided with a plurality of contact points, so that welding points are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a connector structure for the lead wire of an electrocardiogram monitor. Background Technology

[0002] Because the monitor can monitor ECG and blood oxygen information simultaneously and is small and portable, it has gradually become the mainstream telemetry monitoring equipment in major hospitals since its launch. The lead wire is a key component used to connect the patient and the monitor. The lead wire is equipped with a connector and a patient end.

[0003] Currently, the requirements for stable connection between the lead wire and the monitor are high. Most connectors on the market used to connect the monitor and the lead wire have multiple independent pins. Therefore, multiple parts and curing adhesive are needed to fix and assemble the pins. At the same time, each pin also needs to be soldered to the wire and electronic components separately, which makes the structure complex, the production efficiency low, and the production cost high. Utility Model Content

[0004] The purpose of this utility model is to provide a connector structure for an electrocardiogram (ECG) monitor lead wire. In view of the shortcomings of the existing technology, it aims to solve the technical problems of existing ECG monitor lead wire connectors having multiple independent pins, requiring multiple parts and curing adhesive to fix or assemble the pins, resulting in complex structure, low production efficiency, and high production cost.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A connector structure for an electrocardiogram (ECG) monitor lead wire includes a fixing block, a circuit board disposed within the fixing block, a cable and multiple spring contacts soldered to both ends of the circuit board, each spring contact including a connecting section and multiple contact sections fixedly connected to the connecting section and arranged side by side, a frame fitted onto one end of the fixing block near the spring contact, and the cable, fixing block and frame covered with an injection-molded outer film; wherein, the fixing block is clamped to the cable, the connecting section is fixedly connected to the circuit board, the contact sections abut against the fixing block, and the contact sections extend into the frame to form multiple contact points.

[0007] The present invention is further configured such that the connecting section and multiple contact sections are an integral structure, and the end of the contact section is a U-shaped elastic structure.

[0008] The present invention is further configured such that the connecting section is provided with multiple connecting holes.

[0009] The present invention is further configured such that: a first long groove is provided at the connection point between the fixing block and the circuit board corresponding to the connecting segment, and a plurality of placement grooves for placing the contact segment are provided on one side of the fixing block, and the first long groove and the placement grooves are connected.

[0010] The present invention is further configured such that: a second long groove is provided on the fixing block at the connection between the cable and the circuit board, and a fixing hole for cable insertion is provided on the other side of the fixing block, and the second long groove and the fixing hole are connected.

[0011] The present invention is further configured such that: the fixing block is a detachable structure in which the upper cover and the lower cover fit together; the upper cover is provided with a limiting rod; the lower cover is provided with a limiting groove; the limiting rod and the limiting groove are corresponding vertically; the circuit board is provided with a through hole; and the limiting rod passes through the through hole and is inserted into the limiting groove.

[0012] The present invention is further configured such that: the outer edge of the upper cover is provided with a protrusion, and correspondingly, the outer edge of the lower cover is provided with a groove, and the protrusion is embedded in the groove so that the upper cover and the lower cover are engaged.

[0013] The present invention is further configured such that: the skeleton has a cavity, and a baffle plate is provided in the cavity; the baffle plate is provided with a plurality of receiving grooves and a plurality of contact point holes corresponding to the receiving grooves; the placement groove, the receiving groove and the contact point holes are connected; the contact section extends into the cavity and is received in the placement groove and the receiving groove.

[0014] The present invention is further configured such that: the inner wall of the end of the skeleton facing the cable is provided with a plurality of limiting holes, and correspondingly, the outer wall of the fixing block is provided with a plurality of protrusions, which are embedded in the limiting holes for locking.

[0015] The present invention is further provided with anti-slip ribs on both the top and bottom surfaces of the outer membrane.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: This utility model includes a fixing block, a circuit board is provided inside the fixing block, and cables and multiple springs are respectively welded to both ends of the circuit board. Each spring includes a connecting section and multiple contact sections fixedly connected to the connecting section and arranged side by side. A skeleton is fitted on one end of the fixing block near the spring. After the cables, fixing block and skeleton are assembled, they are covered with an injection-molded outer film. The contact sections extend into the skeleton to form multiple contact points, so that the spring can replace the conductive connection of multiple independent pins in the prior art. The cables and springs are connected through the circuit board, and the electrical performance is stable and reliable. Each spring has multiple contact points, reducing the number of welding points, improving production efficiency, and simplifying the structure to reduce production costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the assembly structure of the fixing block, circuit board, spring and cable in this utility model;

[0020] Figure 3 This is a schematic diagram of the assembly structure of the circuit board, spring contact, and cable in this utility model;

[0021] Figure 4 This is a schematic diagram of the first structure of the spring clip in this utility model;

[0022] Figure 5 This is a schematic diagram of the second structure of the spring clip in this utility model;

[0023] Figure 6 This is a schematic diagram of the third structure of the spring clip in this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the fixing block in this utility model;

[0025] Figure 8 This is a schematic diagram of the upper cover structure that makes up the fixing block in this utility model;

[0026] Figure 9 This is a schematic diagram of the lower cover structure that makes up the fixing block in this utility model;

[0027] Figure 10 This is a schematic diagram of the skeleton structure in this utility model.

[0028] The details of the reference numerals used in the above figures are as follows:

[0029] 1-Circuit board, 11-Through hole;

[0030] 2-Cables;

[0031] 3-Spring piece, 31-Connecting section, 311-Connecting hole, 32-Contact section;

[0032] 4-Fixing block, 41-First long groove, 42-Placement groove, 43-Second long groove, 44-Fixing hole, 45-Upper cover, 451-Limiting rod, 452-Protrusion, 46-Lower cover, 461-Limiting groove, 462-Groove, 47-Protrusion;

[0033] 5-Skeleton, 51-Cavity, 52-Blocking plate, 53-Accommodation groove, 54-Contact hole, 55-Limiting hole;

[0034] 6-Outer membrane, 61-Anti-slip rib. Detailed Implementation

[0035] In the description of this application, the term "multiple" refers to two or more (including two). Technical terms such as "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary / secondary relationship of the indicated technical features. Terms such as "installation," "connection," and "linking" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In the description of this application, the technical terms "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0037] In order to better understand the above-mentioned objectives, technical solutions and advantages of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings, so as to understand in detail how to solve the problems raised in the background art.

[0038] like Figures 1 to 10 As shown, a connector structure for an electrocardiogram (ECG) monitor lead wire includes a fixing block 4, a circuit board 1 disposed inside the fixing block 4, and cables 2 and multiple spring contacts 3 welded to both ends of the circuit board 1, respectively. Each spring contact 3 includes a connecting section 31 and multiple contact sections 32 fixedly connected to the connecting section 31 and arranged side by side. A frame 5 is fitted onto one end of the fixing block 4 near the spring contact 3. The cables 2, the fixing block 4, and the frame 5 are covered with an injection-molded outer film 6. The fixing block 4 is clamped to the cables 2, the connecting section 31 is fixedly connected to the circuit board 1, and the contact sections 32 abut against the fixing block 4 and extend into the frame 5 to form multiple contact points.

[0039] Through the above scheme, the spring 3 and the cable 2 can be fixed to both ends of the circuit board 1 by welding. The circuit board 1 is provided with electronic components, and the corresponding fixing block 4 is also provided with slots for accommodating electronic components, so as to achieve a stable connection between the spring 3, the cable 2 and the electronic components. The fixing block 4 can protect and fix the circuit board 1 and ensure the stability of the structure. The number of contact segments 32 set on the connecting section 31 of the spring 3 can be set according to actual needs, such as 4, 8 and 9. In this embodiment, the bottom and top surfaces of the circuit board 1 are equipped with the above 3 spring 3 structures, which can meet the maximum requirement of 21 pins for the lead wire connector in the prior art, thereby realizing a conductive connection that replaces 21 contact points. Since each connecting section 31 of the spring 3 has multiple contact segments 32, the connecting section 31 can be welded by hot pressing long solder wire with a long strip of iron head, so that the connecting section 31 can be fixed to the circuit board 1, which increases the contact area. The electrical performance of the spring 3 is stable and reliable, and the number of welding points can be reduced, which improves production efficiency. The spring 3 can be formed by stamping, which is simple in structure and reduces production costs.

[0040] like Figure 4 and Figure 6 As shown, in one specific embodiment of the improvement, the connecting segment 31 and the multiple contact segments 32 are an integral structure, and the end of the contact segment 32 is a U-shaped elastic structure. Specifically, including but not limited to, this embodiment provides three spring pieces 3, and the three spring pieces 3 have four, eight, and nine contact segments 32 respectively. The connecting segment 31 is perpendicular to the contact segments 32. The spacing between two adjacent contact segments 32, as well as the dimensions of the contact segments 32 and the connecting segment 31, can be set by those skilled in the art according to actual needs, and are not specifically limited here. The connecting segment 31 and the contact segments 32 are integrally stamped, and the U-shaped structure can ensure the elastic effect of the spring piece 3. At the same time, the contact segment 32 is also provided with a bend, which, together with the U-shaped structure, can ensure the length of the elastic lever arm.

[0041] like Figure 4 and Figure 6 As shown, in one specific embodiment of the improvement, the connecting segment 31 is provided with a plurality of connecting holes 311. Specifically, including but not limited to, the connecting holes 311 are one of circular, rectangular and trapezoidal shapes. The connecting holes 311 penetrate the connecting segment 31, so that when the spring piece 3 is soldered, the solder wire melts into the connecting holes 311. The connecting holes 311 can ensure the soldering area between the spring piece 3 and the circuit board 1, ensure the firmness and stability of the connection between the spring piece 3 and the circuit board 1, and enable rapid soldering.

[0042] like Figure 2 , Figures 7 to 9As shown, in one specific embodiment of the improvement, the fixing block 4 is provided with a first long groove 41 at the connection between the connecting segment 31 and the circuit board 1. One side of the fixing block 4 is provided with multiple placement grooves 42 for placing the contact segment 32. The first long groove 41 and the placement grooves 42 are connected. Specifically, including but not limited to, the structure of the first long groove 41 corresponds to the structure of the connecting segment 31 to ensure that the connecting segment 31 can be accommodated within the first long groove 41. Both the first long groove 41 and the connecting segment 31 are rectangular structures. The structure of the placement groove 42 corresponds to the structure of the contact segment 32. The placement groove 42 is also curved at the bend of the contact segment 32 to form a slope, ensuring that the front end of the contact segment 32 is completely fitted onto the fixing block 4, preventing the spring piece 3 from shifting or moving. The U-shaped structure at the end of the contact segment 32 can extend laterally along the placement groove 42, facilitating the tight connection and assembly of the spring piece 3, the circuit board 1, and the fixing block 4.

[0043] like Figure 2 , Figures 7 to 9 As shown, in one specific embodiment of the improvement, the fixing block 4 is provided with a second elongated groove 43 at the connection between the cable 2 and the circuit board 1, and a fixing hole 44 for inserting the cable 2 is provided on the other side of the fixing block 4. The second elongated groove 43 and the fixing hole 44 are connected. Specifically, including but not limited to, the second elongated groove 43 is a rectangular groove used to accommodate the cables 2 on the upper and lower sides of the circuit board 1. When there are multiple cables 2, the circuit board 1 is provided with a contact surface, and multiple cables 2 can be soldered at once by hot pressing the solder wire with a long strip of soldering iron, avoiding the need to solder the cables 2 one by one, reducing the number of soldering points, and improving production efficiency. The fixing hole 44 can clamp and fix the front end of the cable 2, increase the tensile strength of the cable 2, prevent the cable 2 from breaking or wearing, ensure the service life of the connector, and also help to accurately solder the cable 2.

[0044] like Figure 2 , Figure 3 , Figure 8 and Figure 9As shown, in one specific embodiment of the improvement, the fixing block 4 is a detachable structure in which the upper cover 45 and the lower cover 46 fit together. The upper cover 45 is provided with a limiting rod 451, and the lower cover 46 is provided with a limiting groove 461. The limiting rod 451 and the limiting groove 461 correspond to each other vertically. The circuit board 1 is provided with a through hole 11, and the limiting rod 451 passes through the through hole 11 and is inserted into the limiting groove 461. Specifically, including but not limited to, the upper cover 45 and the lower cover 46 can be interlocked, which facilitates the assembly of the circuit board 1, the spring 3, and the cable 2. The limiting rod 451, the limiting groove 461, and the through hole 11 are all cylindrical structures, and the limiting rod 451 protrudes relative to the upper cover 45 to ensure that the limiting rod 451 can be inserted into the limiting groove 461. So, after the spring 3 and the cable 2 are soldered to the circuit board 1, the circuit board 1 can be placed on the upper cover 45 first, and the limiting rod 451 passes through the through hole 11 to achieve precise positioning and installation of the circuit board 1. Then, the upper cover 45 is closed, thereby completing the rapid assembly of the fixing block 4 and avoiding the circuit board 1 from being locked. The loosening or displacement; at the same time, the first long groove 41, the placement groove 42 and the second long groove 43 are each provided in two corresponding positions on the upper cover 45 and the lower cover 46 respectively, which can be fixed to the welding ends of the three spring pieces 3 and the cable 2 on the top and bottom surfaces of the circuit board 1. The three spring pieces 3 can form a double row of contact points on the upper and lower surfaces when installed on the circuit board 1, and the placement groove 42 extends to the side of the upper cover 45 and the lower cover 46 to ensure that the U-shaped structure of the contact section 32 of the spring piece 3 protrudes outward relative to the upper cover 45 and the lower cover 46 after installation, so that it can be inserted into the frame 5. The fixing hole 44 is formed by the upper cover 45 and the lower cover 46 after they are closed.

[0045] like Figure 2 , Figure 8 and Figure 9 As shown, in one specific embodiment of the improvement, the outer edge of the upper cover 45 is provided with a protrusion 452, and correspondingly, the outer edge of the lower cover 46 is provided with a groove 462. The protrusion 452 is embedded in the groove 462 to make the upper cover 45 and the lower cover 46 snap together. Specifically, including but not limited to, the protrusion 452 and the groove 462 are corresponding rectangular structures, so that when the upper cover 45 and the lower cover 46 are installed, the protrusion 452 can be embedded in the groove 462, the fixing block 4 can be quickly installed, ensuring that the upper cover 45 and the lower cover 46 are tightly fixed, and preventing the upper cover 45 and the lower cover 46 from shifting and scratching the internal electronic components.

[0046] like Figure 1 and Figure 10As shown, in one specific embodiment of the improvement, the skeleton 5 has a cavity 51, and a baffle plate 52 is provided in the cavity 51. The baffle plate 52 is provided with a plurality of receiving grooves 53 and a plurality of contact holes 54 corresponding to the receiving grooves 53. The placement groove 42, the receiving grooves 53 and the contact holes 54 are connected. The contact section 32 extends into the cavity 51 and is accommodated in the placement grooves 42 and the receiving grooves 53. Specifically, including but not limited to, the blocking plate 52 has a V-shaped structure, and the receiving groove 53 and the contact hole 54 are both set on both sides of the V-shaped structure to form a symmetrical structure. The contact section 32 of the two rows of spring pieces 3 fixed by the circuit board 1 also forms a V-shaped structure, so that the blocking plate 52 and the spring piece 3 cooperate with each other. The setting of the blocking plate 52 can separate the cavity 51 of the skeleton 5, so that one end of the skeleton 5 can be inserted into the fixing block 4. The contact section 32 is accommodated in the inner cavity enclosed by the placement groove 42 and the receiving groove 53. The U-shaped structure at the end is accommodated in the receiving groove 53, and the U-shaped structure covers the blocking plate 52 corresponding to the contact hole 54, so that it can contact the spring piece 3 through the contact hole 54. The receiving groove 53 can prevent the spring piece 3 from shifting when it is pressed, and the contact hole 54 can ensure that the spring piece 3 is electrically connected when the connector is plugged in.

[0047] like Figure 1 and Figure 3 As shown, in one specific embodiment of the improvement, the inner wall of the end of the frame 5 facing the cable 2 is provided with multiple limiting holes 55. Correspondingly, the outer wall of the fixing block 4 is provided with multiple protrusions 47, which are inserted into the limiting holes 55 for locking. Specifically, including but not limited to, the limiting holes 55 and the cavity 51 of the frame 5 are connected, and the structures of the limiting holes 55 and the protrusions 47 correspond. When the fixing block 4 is inserted into the cavity 51 of the frame 5, the protrusions 47 are inserted into the limiting holes 55, realizing the tight installation of the frame 5 and the fixing block 4, ensuring the stability of the structure, and also ensuring that the spring piece 3 extends into the receiving groove 53 to correspond to the positioning of the contact hole 54. It can also clamp the fixing block 4 from top and bottom. The height of the protrusions 47 is less than the height of the limiting holes 55 to avoid the protrusions 47 protruding and scratching during installation.

[0048] like Figure 1 As shown, in one specific embodiment of the improvement, the top and bottom surfaces of the outer membrane 6 are provided with anti-slip ribs 61. The anti-slip ribs 61 help users to plug and unplug the connector. The anti-slip ribs 61 and the outer membrane 6 can be injection molded after the fixing block 4 and the frame 5 are installed, and part of the outer membrane 6 wraps the front end of the cable 2.

[0049] It is worth noting: See Figures 4 to 6 In this embodiment, the structure of the three spring pieces 3 has different numbers of contact segments 32 on the connecting segment 31, thus changing the contact points formed accordingly. Therefore, different spring piece 3 structures can be arbitrarily combined to meet more needs.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A connector structure for a lead wire of an electrocardiogram monitor, characterized in that, The utility model provides a fixing block is provided with circuit board in it, and the cable and a plurality of elastic sheets are welded respectively at both ends of the circuit board, the elastic sheet includes connecting section and a plurality of contact sections fixedly connected with the connecting section and arranged side by side, the fixing block is provided with a framework at one end close to the elastic sheet, and the cable, the fixing block and the framework are covered with the outer membrane of injection molding, wherein the fixing block is clamped with the cable, the connecting section is fixedly connected with the circuit board, the contact section is abutted with the fixing block, and the contact section is inserted into the framework to form a plurality of contact points.

2. The connector structure of the ECG monitor lead wire according to claim 1, characterized in that, The connecting section and the plurality of contact sections are integrated structure, and the end of the contact section is U-shaped elastic structure.

3. The connector structure of the ECG monitor lead wire according to claim 1, characterized in that, The connecting section is provided with a plurality of connecting holes.

4. The connector structure of the ECG monitor lead wire according to claim 1, characterized in that, The fixing block is provided with a first long slot corresponding to the connecting section and the connecting section and the circuit board, and a plurality of placing grooves are arranged on one side of the fixing block for placing the contact section, and the first long slot and the placing groove are communicated.

5. The connector structure of the ECG monitor lead wire according to claim 4, wherein, The fixing block is provided with a second long slot corresponding to the cable and the cable and the circuit board, and a fixing hole is arranged on the other side of the fixing block for the cable insertion, and the second long slot and the fixing hole are communicated.

6. The connector structure of the ECG monitor lead wire according to claim 5, characterized in that, The fixing block is detachable structure that the upper cover and the lower cover are embedded, the upper cover is provided with a limiting rod, the lower cover is provided with a limiting slot, the limiting rod and the limiting slot are correspondingly arranged, the circuit board is provided with a through hole, and the limiting rod is inserted into the limiting slot through the through hole.

7. The connector structure of the ECG monitor lead wire according to claim 6, characterized in that, The outer edge of the upper cover is provided with a convex strip, and the outer edge of the lower cover is provided with a groove correspondingly, and the convex strip is embedded in the groove to make the upper cover and the lower cover clamped.

8. The connector structure of the ECG monitor lead wire according to claim 7, characterized in that, The framework has a cavity, and a baffle is arranged in the cavity, the baffle is provided with a plurality of accommodating grooves and a plurality of contact point holes corresponding to the accommodating grooves, the accommodating grooves, the accommodating grooves and the contact point holes are communicated, the contact section is inserted into the cavity, and the contact section is accommodated in the accommodating groove and the accommodating groove.

9. The connector structure of the ECG monitor lead wire according to claim 8, characterized in that, The inner wall of one end of the framework towards the cable is provided with a plurality of limiting holes, and the outer wall of the fixing block is provided with a plurality of convex blocks correspondingly, and the convex blocks are embedded in the limiting holes to be clamped.

10. The connector structure of the ECG monitor lead wire according to claim 1, characterized in that, The top surface and the bottom surface of the outer membrane are provided with anti-skid ribs.

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