Cable assembly of electrocardiograph monitor

Abstract

An electrocardiograph monitor cable assembly comprises a lead wire, and the cross section structure of the lead wire comprises a conductor located in the center and used for transmitting electric signals; the microcellular foaming insulating layer wraps the periphery of the conductor in a surrounding manner; the insulating layer protection film wraps the periphery of the microcellular foaming insulating layer in a surrounding manner; the shielding layer wraps the periphery of the insulating layer protection film in a surrounding manner; and the outer sheath wraps the periphery of the shielding layer in a surrounding manner. And the capability of meeting the necessary dielectric strength requirement of the cable assembly can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to signal connection cable, especially relates to electrocardiograph cable and lead wire. BACKGROUND

[0002] According to the description of Chinese medicine industry standard YY0828-2011, the electrocardiograph cable assembly is used for connecting the patient to the electrocardiograph, and is the assembly of a plurality of separate wires and / or wire bundles bundled into a sheath. Generally, the cable assembly is composed of a main cable and a group of patient lead wires. The lead wire can be separated from the main cable, or jointly constitute a cable assembly (integrated cable and lead wire assembly) with the main cable. The cable assembly must meet the necessary dielectric strength requirements, that is, whether it meets the requirements of 4.5.1 according to the test method of 5.5.1.

[0003] The conventional cable assembly, such as the electrocardiograph lead wire disclosed by Chinese patent CN203953644U, comprises a connecting line, a machine end connector, a branch box and a plurality of patient end connectors. The connecting line comprises a cotton filling line, a plurality of inner core wires, a raw material belt, a conductive glue layer, a shielding layer and a first insulating skin. The shielding layer is woven into a fishing net shape.

[0004] The applicant finds that when the selected materials, cable structure and manufacturing process cannot be well controlled, some products cannot meet the dielectric strength requirements, and it is necessary to further improve in these aspects. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problems in the prior art, and provides an electrocardiograph cable assembly, which is beneficial to improving the ability of the cable assembly to meet the necessary dielectric strength requirements.

[0006] The utility model solves the technical problems by adopting the following technical scheme: an electrocardiograph cable assembly is provided, which comprises a lead wire. The cross-sectional structure of the lead wire comprises: a conductor located at the center and used for transmitting an electrical signal; a microporous foamed insulating layer which is circumferentially wrapped around the outer periphery of the conductor; an insulating layer protective film which is circumferentially wrapped around the outer periphery of the microporous foamed insulating layer; a shielding layer which is circumferentially wrapped around the outer periphery of the insulating layer protective film; and an outer sheath which is circumferentially wrapped around the outer periphery of the shielding layer.

[0007] In some embodiments, the material of the microporous foamed insulating layer is polyethylene, polypropylene or polytetrafluoroethylene.

[0008] In some embodiments, the main component of the material of the microporous foamed insulating layer is polyethylene, polypropylene or polytetrafluoroethylene, and the added component is nano mesoporous silicon dioxide.

[0009] In some embodiments, the material of the insulation layer protective film is the same as that of the microcellular foam insulation layer.

[0010] In some embodiments, the cross-sectional structure of the lead wire further comprises: conductive glue, which is circumferentially coated on the outer periphery of the insulation layer protective film; and the shielding layer is circumferentially coated on the outer periphery of the conductive glue.

[0011] The utility model discloses a technical scheme adopted to solve its technical problems further includes: provide a kind of electrocardiograph cable assembly, including main cable, the cross-sectional structure of this main cable includes: a plurality of core wires, located center;Conductive glue, which is circumferentially coated on the outer periphery of the a plurality of core wires;Shielding layer, which is circumferentially coated on the outer periphery of the conductive glue;And outer sheath, which is circumferentially coated on the outer periphery of the shielding layer.

[0012] In some embodiments, each core wire further comprises: a conductor located at the center for transmitting electrical signals; a microcellular foam insulation layer circumferentially coated on the outer periphery of the conductor; and an insulation layer protective film circumferentially coated on the outer periphery of the microcellular foam insulation layer.

[0013] In some embodiments, a filler and a tensile agent are arranged between the plurality of core wires.

[0014] In some embodiments, the material of the microcellular foam insulation layer is polyethylene, polypropylene or polytetrafluoroethylene.

[0015] In some embodiments, the main component of the material of the microcellular foam insulation layer is polyethylene, polypropylene or polytetrafluoroethylene, and the additive component is nano mesoporous silicon dioxide.

[0016] In some embodiments, the material of the insulation layer protective film is the same as that of the microcellular foam insulation layer.

[0017] In some embodiments, the cross-sectional structure of the main cable further comprises: a main microcellular foam insulation layer circumferentially coated on the outer periphery of the plurality of core wires; a main insulation layer protective film circumferentially coated on the outer periphery of the main microcellular foam insulation layer; and the conductive glue is circumferentially coated on the outer periphery of the main insulation layer protective film.

[0018] In some embodiments, the material of the main microcellular foam insulation layer is the same as that of the microcellular foam insulation layer, and the material of the main insulation layer protective film is the same as that of the insulation layer protective film.

[0019] Compared with the prior art, the electrocardiograph cable assembly of the utility model, by skillfully selecting the cooperation structure of the microcellular foam insulation layer and the insulation layer protective film, utilizing the characteristic that the relative dielectric constant of the insulation material can be reduced after foaming, and utilizing the insulation layer protective film to shape and protect the microcellular foam insulation layer, is conducive to improving the ability of the cable assembly to meet the necessary dielectric strength requirements. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the conductor in an embodiment of this utility model.

[0021] Figure 2 This is a schematic diagram of the cabling structure composed of five lead wires in an embodiment of this utility model.

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the main cable in an embodiment of this utility model.

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the core wire of the main cable in an embodiment of this utility model.

[0024] The reference numerals in the attached diagram are explained as follows: 1. Lead wire; 11. Conductor; 12. Microporous foamed insulation layer; 13. Insulation layer protective film; 14. Conductive adhesive; 15. Shielding layer; 16. Outer sheath; 2. Main cable; 21. Core wire; 22. Main microporous foamed insulation layer; 23. Main insulation layer protective film; 24. Conductive adhesive; 25. Shielding layer; 26. Outer sheath; 27. Filler; 28. Tensile agent. Detailed Implementation

[0025] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] See Figure 1 , Figure 1 This is a schematic diagram of the cross-sectional structure of the conductor in an embodiment of this utility model.

[0027] This utility model proposes a cable assembly for an electrocardiogram (ECG) monitor, including a lead wire 1. The cross-sectional structure of the lead wire 1 includes: a conductor 11 located at the center for transmitting electrical signals; a microporous foamed insulation layer 12 surrounding the outer periphery of the conductor 11; an insulation protective film 13 surrounding the outer periphery of the microporous foamed insulation layer 12; a conductive adhesive 14 surrounding the outer periphery of the insulation protective film 13; a shielding layer 15 surrounding the outer periphery of the conductive adhesive 14; and an outer sheath 16 surrounding the outer periphery of the shielding layer 15.

[0028] In some embodiments, the microporous foamed insulation layer 12 is made of polyethylene (PE), polypropylene (PP), or polytetrafluoroethylene (PTFE).

[0029] In some embodiments, the microcellular foam insulation layer 12 is made of a base component and an additive component. For example, the base component is polyethylene (PE) and the additive component is nano-mesoporous silica; the base component is polypropylene (PP) and the additive component is nano-mesoporous silica; or the base component is polytetrafluoroethylene (PTFE) and the additive component is nano-mesoporous silica.

[0030] The insulation layer protective film 13 is made of the same material as the microcellular foam insulation layer 12. The difference is that the insulation layer protective film 13 is solid, while the microcellular foam insulation layer 12 is foamed.

[0031] The microcellular foam insulation layer 12 contains microcellular pores with a pore size of 0.5-5 microns.

[0032] The conductive glue 14 is black conductive glue.

[0033] It is worth mentioning that, in the present embodiment, the conductive glue 14 is provided; in some other embodiments, the conductive glue 14 can be omitted.

[0034] It can be understood that, by using the combined insulation structure of the microcellular foam insulation layer 12 and the insulation layer protective film 13, firstly, the relative dielectric constant of the insulation material can be reduced by foaming, for example, it is reported that the relative dielectric constant of polyethylene is 2.1 when it is not foamed, and is about 1.5 when it is foamed; the relative dielectric constant of polypropylene is 2.1 when it is not foamed, and is about 1.5 when it is foamed; the relative dielectric constant of polytetrafluoroethylene is 2.1 when it is not foamed, and is 1.47 when it is foamed; secondly, the strength, toughness and fatigue resistance of the pore wall of the microcellular foam insulation material can be enhanced by adding nano-mesoporous silica nanomaterials (MSNs), so as to improve the anti-cracking property of the microcellular bubbles and the stability of the dielectric constant; and thirdly, the microcellular foam insulation layer 12 can be shaped and protected by the insulation layer protective film 13.

[0035] It can be understood that, by reducing the relative dielectric constant of the insulation material of the insulation layer 12, the ability of the lead wire 1 to meet the necessary dielectric strength requirement can be improved.

[0036] Referring to Figure 2 , Figure 2 The cable structure is formed by five lead wire combinations in the embodiment of the present application.

[0037] Referring to Figure 3 , Figure 3This is a schematic diagram of the cross-sectional structure of the main cable in an embodiment of this utility model.

[0038] This utility model proposes a cable assembly for an electrocardiogram monitor, including a main cable 2. The cross-sectional structure of the main cable 2 includes: a plurality of core wires 21 located at the center; a main microporous foamed insulation layer 22 surrounding the periphery of the plurality of core wires 21; a main insulation layer protective film 23 surrounding the periphery of the main microporous foamed insulation layer 22; conductive adhesive 24 surrounding the periphery of the main insulation layer protective film 23; a shielding layer 25 surrounding the periphery of the conductive adhesive 24; and an outer sheath 26 surrounding the periphery of the shielding layer 25.

[0039] It is worth mentioning that in this embodiment, a main microporous foamed insulating layer 22 and a main insulating layer protective film 23 are provided; in some other embodiments, the main microporous foamed insulating layer 22 and the main insulating layer protective film 23 can be omitted.

[0040] It is understood that the structure of the main cable 2 is similar to that of the aforementioned conductor 1. The aforementioned description of the materials also applies here. That is, the aforementioned description of the material of the microporous foamed insulation layer 12 applies to the material of the main microporous foamed insulation layer 22 here, and the aforementioned description of the material of the insulation layer protective film 13 applies to the material of the main insulation layer protective film 23 here. It will not be repeated here.

[0041] It is worth mentioning that if the plurality of core wires 21 and the filler 27 and tensile agent 28 disposed between them are regarded as a whole as the conductor 11 in the conductor 1, then the structure of the main cable 2 is essentially the same as the structure of the conductor 1.

[0042] See Figure 4 , Figure 4 This is a schematic diagram of the cross-sectional structure of the core wire of the main cable in this embodiment of the present invention. Each core wire 21 further includes: a conductor 211 located at the center for transmitting electrical signals; a microporous foamed insulation layer 212 surrounding the outer periphery of the conductor 211; and an insulation protective film 213 surrounding the outer periphery of the microporous foamed insulation layer 212.

[0043] It is understandable that the structure of the core wire 21 is similar to that of the aforementioned conductor wire 1, except that it lacks the conductive adhesive 14, shielding layer 15, and outer sheath 16 surrounding the conductor wire 1. The aforementioned descriptions of the materials also apply here, that is: the aforementioned description of the material of the microporous foamed insulation layer 12 applies to the material of the microporous foamed insulation layer 212 here; the aforementioned description of the material of the insulation layer protective film 13 applies to the material of the insulation layer protective film 213 here, and will not be repeated here.

[0044] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some technical features can be replaced by equivalents. These modifications and replacements should all belong to the protection scope of the claims of the present application.

Claims

1. An electrocardiograph cable assembly comprising a lead wire, characterized in that, The cross-sectional structure of the lead wire comprises: a conductor in the center for transmitting an electrical signal; a microcellular foam insulation layer surrounding the outer periphery of the conductor; an insulation layer protective film surrounding the outer periphery of the microcellular foam insulation layer; a shielding layer surrounding the outer periphery of the insulation layer protective film; and an outer sheath surrounding the outer periphery of the shielding layer.

2. The electrocardiograph cable assembly of claim 1, wherein, The material of the microcellular foam insulation layer is polyethylene, polypropylene or polytetrafluoroethylene.

3. The electrocardiograph cable assembly of claim 1, wherein, The material of the insulation layer protective film is the same as that of the microcellular foam insulation layer.

4. The electrocardiograph cable assembly of any one of claims 1 to 3, wherein, The cross-sectional structure of the lead wire further comprises: a conductive adhesive surrounding the outer periphery of the insulation layer protective film; and the shielding layer surrounding the outer periphery of the conductive adhesive.

5. A cardiac monitor cable assembly comprising a main cable, characterized by, The cross-sectional structure of the main cable comprises: a plurality of core wires in the center, wherein each core wire further comprises: a conductor in the center for transmitting an electrical signal; a microcellular foam insulation layer surrounding the outer periphery of the conductor; an insulation layer protective film surrounding the outer periphery of the microcellular foam insulation layer; a conductive adhesive surrounding the outer periphery of the plurality of core wires; a shielding layer surrounding the outer periphery of the conductive adhesive; and an outer sheath surrounding the outer periphery of the shielding layer.

6. The electrocardiograph cable assembly of claim 5, wherein, The material of the microcellular foam insulation layer is polyethylene, polypropylene or polytetrafluoroethylene.

7. The electrocardiograph cable assembly of claim 5, wherein, The material of the insulation layer protective film is the same as that of the microcellular foam insulation layer.

8. The electrocardiograph cable assembly of any one of claims 5 to 7, wherein, The cross-sectional structure of the main cable further comprises: a main microcellular foam insulation layer surrounding the outer periphery of the plurality of core wires; a main insulation layer protective film surrounding the outer periphery of the main microcellular foam insulation layer; and the conductive adhesive surrounding the outer periphery of the main insulation layer protective film.

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