Control cable for medical clinical equipment

Abstract

The utility model relates to a control cable for medical clinical equipment, which comprises an outer sheath and a plurality of cable units arranged in the outer sheath, and each cable unit comprises a conductor used for transmitting signals; the insulating layer wraps the outer side of the conductor and is used for electrical insulation; the shielding layer is arranged on the outer side of the insulating layer and is used for reducing electromagnetic interference; wherein the shielding layer comprises an aluminum foil shielding layer and a braided shielding layer, and the aluminum foil shielding layer clings to the insulating layer and is used for reflecting and absorbing high-frequency electromagnetic interference; the braided shield wraps the outer side of the aluminum foil shield and is used for conducting low-frequency electromagnetic interference; and the inner sheath wraps the outer side of the braided shield and is used for providing mechanical protection and preventing conduction between the shielding layers. Through the multi-layer structure design, the comprehensive performance of the cable in the aspects of electrical insulation, interference resistance, mechanical protection and environmental adaptability is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially is a kind of control cable for medical clinical equipment. BACKGROUND

[0002] In medical equipment, especially clinical equipment such as mobile C-arm X-ray machine, control cable is the key component to realize equipment operation and signal transmission. Traditional control cable usually includes conductor, insulation layer, shielding layer and outer sheath. These cables mainly consider electrical performance and mechanical strength in design and material selection, but in medical environment, they also need to meet higher requirements, such as biocompatibility, chemical corrosion resistance, ultraviolet resistance and stability in low temperature and salt spray environment. Although the control cable in the prior art meets the basic electrical and mechanical performance requirements to some extent, there are still the following shortcomings in the application of medical equipment:

[0003] Insufficient biocompatibility: the sheath material of traditional cable may not have undergone strict biocompatibility test, and is not suitable for direct contact with medical equipment and human tissues.

[0004] Limited anti-interference ability: in high-frequency signal transmission and complex electromagnetic environment, the shielding effect of existing cable may not be enough to prevent electromagnetic interference, affecting the stability and accuracy of signal.

[0005] Poor environmental adaptability: existing cable has deficiencies in low temperature, salt spray resistance and ultraviolet resistance, which can easily lead to cable aging and performance degradation, affecting the service life of equipment.

[0006] Insufficient mechanical performance: in the use scenario of frequent movement and bending, the tensile and bending resistance of existing cable may be insufficient, which can easily lead to cable damage. INVENTION CONTENTS

[0007] Therefore, the utility model wants to overcome the insufficient of prior art, provide a kind of control cable for medical clinical equipment, through multilayer structure design, cable realizes the significant promotion of comprehensive performance in electrical insulation, anti-interference, mechanical protection and environmental adaptability.

[0008] To solve the above technical problems, the utility model provides a kind of control cable for medical clinical equipment, including outer sheath and the several cable units being arranged in the outer sheath, the cable unit includes:

[0009] Conductor for transmitting signal;

[0010] Insulation layer, which is wrapped outside the conductor for electrical insulation;

[0011] A shielding layer is arranged outside the insulating layer to reduce electromagnetic interference, wherein the shielding layer comprises an aluminum foil shielding layer and a braided shielding layer, the aluminum foil shielding layer is tightly attached to the insulating layer to reflect and absorb high-frequency electromagnetic interference, and the braided shielding layer is wrapped outside the aluminum foil shielding layer to conduct low-frequency electromagnetic interference.

[0012] An inner sheath is wrapped outside the braided shielding layer to provide mechanical protection and prevent conduction between the shielding layers.

[0013] In an embodiment of the utility model, the shielding layer further comprises a ground wire, the ground wire is connected with the braided shielding layer, and the ground wire is used for guiding interference signals to a grounding terminal.

[0014] In an embodiment of the utility model, the inner side of the outer sheath is provided with non-woven fabric, and the non-woven fabric is used for improving the wear resistance, moisture absorption and softness of the cable.

[0015] In an embodiment of the utility model, the conductor is twisted by a plurality of fine filaments.

[0016] In an embodiment of the utility model, the center position inside the outer sheath and the adjacent cable units are both provided with fillers, and the fillers are used for increasing the roundness and mechanical strength of the cable.

[0017] In an embodiment of the utility model, the filler is cotton yarn, fiber rope or PP rope.

[0018] In an embodiment of the utility model, the aluminum foil shielding layer and the braided shielding layer are fixed by means of lap joint or adhesion.

[0019] In an embodiment of the utility model, the braided shielding layer is woven into a net structure by metal wires, and the braided shielding layer is used for conducting low-frequency electromagnetic interference.

[0020] In an embodiment of the utility model, the utility model further comprises a communication network cable, and the communication network cable is selected from cat6 or cat6a network cable.

[0021] In an embodiment of the utility model, the outer sheath is made of PU polyurethane material.

[0022] Compared with the prior art, the above technical scheme of the utility model has the following beneficial effects:

[0023] The utility model discloses a kind of control cables for medical clinical equipment, by multilayer structure design, cable realizes the significant promotion of comprehensive performance in electrical insulation, anti-interference, mechanical protection and environmental adaptability, the aluminum foil shield of shielding layer effectively reflects and absorbs high-frequency electromagnetic interference, braided shield conducts low-frequency electromagnetic interference, ensure the stability and accuracy of signal transmission;Inner sheath can prevent the conduction between shielding layer, while providing additional mechanical protection, enhance the overall strength of cable. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to make the content of the utility model more easily be clearly understood, the following according to the specific embodiment of the utility model and combining with the drawings, the utility model is further explained in detail, wherein

[0025] Figure 1 For the structure diagram of the control cable for medical clinical equipment in the preferred embodiment of the utility model;

[0026] Description of the drawings Reference numerals 1, outer sheath;2, cable unit;3, non-woven fabric;4, filler;21, conductor;22, insulating layer;24, aluminum foil shield;25, braided shield;26, inner sheath, 27, ground wire. DETAILED DESCRIPTION

[0027] The utility model is further explained in combination with the drawings and specific embodiment, so that those skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0028] Refer to Figure 1 The utility model discloses a kind of control cables for medical clinical equipment, including outer sheath 1 and the several cable units 2 of setting in the outer sheath 1 inside, the cable unit 2 includes:

[0029] Conductor 21, for transmitting signal;

[0030] Insulating layer 22, it is wrapped and set on the outer side of the conductor 21 for electrical insulation;Insulation selects thermoplastic polypropylene material, has green environmental protection, electrical insulation performance is good, production cost is low, corrosion resistance, mechanical strength higher advantage, in medical control cable field demand is prosperous;

[0031] Shielding layer, it is wrapped and set on the outer side of the insulating layer 22 for reducing electromagnetic interference;Wherein the shielding layer includes aluminum foil shield 24, braided shield 25, the aluminum foil shield 24 is tightly attached to the insulating layer 22, for reflecting and absorbing high-frequency electromagnetic interference;The braided shield 25 is wrapped in the outer side of the aluminum foil shield 24, for conducting low-frequency electromagnetic interference;Shielding layer is involved to help guarantee long-distance stable signal quality, prevent the protective ability of loop to external interference and mutual interference;

[0032] The inner sheath 26 is wrapped outside the braided shield 25 to provide mechanical protection and prevent conduction between the shielding layers.

[0033] Further, the shielding layer further comprises a ground wire 27 connected with the braided shield 25 for conducting interference signals to the ground. The introduction of the ground wire 27 ensures that interference signals can be quickly conducted to the ground, further improving the anti-interference ability of the cable and reducing the impact of electromagnetic interference on equipment. It performs excellently especially in high-frequency signal transmission.

[0034] In addition, the inner side of the outer sheath 1 is provided with non-woven fabric 3 to improve the wear resistance, moisture absorption and softness of the cable. The wear resistance of the non-woven fabric 3 reduces the damage of the outer sheath 1 caused by frequent movement and friction, the moisture absorption of the non-woven fabric 3 can absorb the moisture inside the cable to keep the inside of the cable dry, and the softness improves the use comfort and flexibility of the cable.

[0035] The conductor 21 in this embodiment is twisted by multiple fine filaments. The conductor 21 twisted by multiple fine filaments reduces the resistance change in the signal transmission process, improves the stability and consistency of signal transmission. The conductor 21 in this embodiment selects high-quality annealed 6-type conductor fine filaments, which are smooth in surface, non-oxidized and burr-free; the twisted structure improves the flexibility and tensile strength of the conductor 21, reducing the risk of conductor 21 breakage caused by mechanical stress.

[0036] Further, the center position inside the outer sheath 1 and between adjacent cable units 2 are provided with fillers 4 to increase the roundness and mechanical strength of the cable. The filler 4 makes the cable twisting more round, reduces the deformation and twisting of the cable during use, and also increases the overall mechanical strength of the cable, improving the tensile and bending resistance of the cable.

[0037] Specifically, the filler 4 is cotton yarn, fiber rope or PP rope. These fillers 4 have good flexibility and tensile properties, can effectively absorb the stress inside the cable, and reduce damage caused by mechanical movement. Cotton yarn, fiber rope and PP rope are common materials, with low cost, easy to obtain and good economy.

[0038] Specifically, the aluminum foil shield 24 and the braided shield 25 are fixed by lapping or bonding. The lapping or bonding method ensures the close connection between the aluminum foil shield 24 and the braided shield 25, enhances the overall structural stability of the shielding layer, reduces the gap between the shielding layers through close connection, and further improves the anti-interference ability of the cable.

[0039] The braided shield 25 in the embodiment is woven into a mesh structure for conducting low-frequency electromagnetic interference. The braided shield 25 in the mesh structure can effectively conduct low-frequency electromagnetic interference and reduce the interference of low-frequency signals. Moreover, the braided structure endows the shield layer with good flexibility, so that the shield layer can adapt to the bending and movement of the cable without affecting the shielding effect.

[0040] In addition, the control cable further comprises a communication network cable selected from cat6 or cat6a network cable. The introduction of the communication network cable makes the cable not only suitable for control signal transmission, but also capable of meeting the data communication requirement, thereby expanding the application range of the cable. The cat6 or cat6a network cable conforms to international standards and has good compatibility and high-speed data transmission capability.

[0041] The outer sheath 1 in the embodiment is made of PU polyurethane material. The PU polyurethane material passes the biocompatibility test, thereby ensuring the safety of the cable in a medical environment. The material also has the characteristics of oil resistance, cold resistance, salt mist resistance and ultraviolet resistance, thereby significantly improving the service life and stability of the cable in harsh environments.

[0042] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A control cable for a medical clinical device, characterized by: The cable comprises an outer sheath and a plurality of cable units arranged inside the outer sheath, wherein each cable unit comprises: a conductor for transmitting signals; an insulating layer wrapped outside the conductor for electrical insulation; a shielding layer arranged outside the insulating layer for reducing electromagnetic interference; wherein the shielding layer comprises an aluminum foil shielding layer and a braided shielding layer, the aluminum foil shielding layer is in close contact with the insulating layer for reflecting and absorbing high-frequency electromagnetic interference, and the braided shielding layer is wrapped outside the aluminum foil shielding layer for conducting low-frequency electromagnetic interference; an inner sheath wrapped outside the braided shielding layer for providing mechanical protection and preventing conduction between shielding layers.

2. The control cable for medical clinical equipment according to claim 1, characterized in that: The shielding layer further comprises a ground wire connected with the braided shielding layer for leading interference signals to a grounding end.

3. The control cable for medical clinical equipment according to claim 1, characterized in that: The inner side of the outer sheath is provided with non-woven fabric for improving the wear resistance, moisture absorption and softness of the cable.

4. The control cable for medical clinical equipment according to claim 1, wherein: The conductor is twisted by a plurality of fine filaments.

5. The control cable for medical clinical equipment according to claim 1, characterized in that: A filler is arranged at the center of the inner side of the outer sheath and between adjacent cable units for increasing the roundness and mechanical strength of the cable.

6. The control cable for a medical clinical device according to claim 5, characterized in that: The filler is cotton yarn, fiber rope or PP rope.

7. The control cable for medical clinical equipment according to claim 1, characterized in that: The aluminum foil shielding layer and the braided shielding layer are fixed by overlapping or bonding.

8. The control cable for a medical clinical device according to claim 7, characterized in that: The braided shielding layer is woven into a mesh structure by metal wires for conducting low-frequency electromagnetic interference.

9. The control cable for medical clinical equipment according to claim 1, characterized in that: The cable further comprises a communication network cable selected from cat6 or cat6a network cable.

10. The control cable for medical clinical equipment according to claim 1, characterized in that: The outer sheath is made of PU polyurethane material.

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