Anti-electromagnetic interference cable for endoscope
By designing a multi-layer shielding layer structure on the endoscope cable, using metal conductor winding and material selection, the problems of signal inaccuracy and imaging quality reduction caused by electromagnetic interference are solved, and efficient electromagnetic interference shielding and cost optimization are achieved.
Patent Information
- Application Number
- CN202422220019.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The endoscopic cable is affected by electromagnetic interference during use, resulting in inaccurate signal and reduced imaging quality, especially in complex interference environments.
An endoscopic cable that is resistant to electromagnetic interference is designed, adopting a multi-layer shielding layer structure, in which the shielding layer is formed by winding multiple single metal conductors. The number of layers and winding direction of the shielding layer are adjustable to adapt to the electromagnetic interference level of different environments, and metal conductors of different materials are used to optimize the shielding effect.
Effectively reduce the impact of electromagnetic interference, ensure the quality of signal transmission, meet customer specifications, reduce production costs, and adjust the softness and hardness of the cable according to needs.
Smart Images
Figure CN223123637U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a cable for an endoscope with electromagnetic interference resistance, belonging to the technical field of cables. Background Art
[0002] An endoscope is an instrument integrating technologies such as electronic technology, optics, precision machinery, and microscopic imaging, and is usually applied in the medical or industrial field. In the environment where an endoscope is used, there is usually a large amount of electromagnetic noise radiation or conduction, which seriously interferes with the use of the endoscope and the imaging effect. Currently, the method to solve the problem that the electromagnetic noise radiation or conduction during the use of the endoscope affects the use of the endoscope is to set a shielding layer on the cable for transmitting signals of the endoscope.
[0003] The structural design of the traditional shielding layer refers to Figure 2-4 , in Figure 2 , only a layer of metal foil tape is covered on the outside of the conductor; in Figure 3 , a layer of metal foil tape and a layer of shielding layer are covered on the outside of the conductor, and the shielding layer is covered on the outside of the metal foil tape in a winding manner; in Figure 4 , a layer of metal foil tape and a double-layer shielding layer are covered on the outside of the conductor, and the shielding layer is covered on the outside of the metal foil tape in a braiding manner. In Figure 2 and Figure 3 , the endoscope wire has the problem of insufficient electromagnetic interference resistance, which affects the image quality of the endoscope during image transmission and the quality of other signals. It may occur that the information signal returned by the endoscope wire is inaccurate and unclear, affecting the user's work judgment, especially the correctness of the doctor's diagnosis or surgical operation in the medical field; in Figure 4 , the shielding layer is made by a braiding method and has multiple layers of shielding layers, which has a better shielding effect compared with Figure 2 and Figure 3 , but there are gaps in some shielding layers in the cross-section, and in some environments with complex interference sources, there is a situation of insufficient shielding coverage rate, and the anti-interference ability cannot meet the requirements.
[0004] Therefore, it is necessary to design a cable for an endoscope with electromagnetic interference resistance to ensure that the cable of the endoscope reduces the influence of electromagnetic interference during use. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is: to provide a cable for an endoscope with electromagnetic interference resistance, which solves the problem that the cable of the endoscope is affected by electromagnetic interference during use.
[0006] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions: a cable for an endoscope with electromagnetic interference resistance, including a core wire, a shielding component, and a sheath layer,
[0007] The shielding component is arranged outside the core wire, and the sheath layer is arranged outside the shielding component.
[0008] The shielding component includes an inner wrapping tape and a shielding layer. The shielding layer is arranged outside the inner wrapping tape or the sheath layer, and the inner wrapping tape or the sheath layer can be arranged outside the shielding layer.
[0009] The shielding layer is formed by winding and fitting multiple single metal conductors. The shielding layer has at least two layers. The inner wrapping tape is arranged between the shielding layers. The shielding layer is wound in a fixed direction.
[0010] Preferably, the winding directions of different shielding layers are the same or opposite.
[0011] Preferably, the metal conductor used for winding the shielding layer is an alloy conductor with copper or silver as the main body.
[0012] Preferably, the inner wrapping tape can be added outside the core wire or the shielding layer.
[0013] Preferably, the inner wrapping tape includes a metal foil.
[0014] Preferably, the core wire includes a single-core wire or a stranded multi-core wire.
[0015] The beneficial effects of the present utility model are as follows:
[0016] (1) Through the present utility model, multiple shielding layers are designed outside the core wire. The number of shielding layers is designed according to the influence degree of electromagnetic interference in the use environment. By controlling the number of shielding layers outside the core wire, it can be ensured that the influence degree of electromagnetic interference can be reduced to a level that has no influence on the use of the endoscope, meeting the requirements of the customer's product specifications and even far lower than the industry standard limit value, thus ensuring the quality of signal transmission.
[0017] (2) Through the present utility model, when different shielding layers are arranged outside the conductor, the winding direction of the shielding layer can be adjusted, and the winding directions can be the same or opposite. By controlling the winding direction of the shielding layer, the hardness and softness of the cable can be changed. There are different requirements for the hardness and softness of the cable in the use environment. By adjusting the winding direction of the cable shielding layer, the hardness and softness of the cable can be adjusted to the standard required for use.
[0018] (3) Through the present utility model, the metal conductor used for winding the shielding layer includes pure silver, bare copper, tinned copper, silver-plated copper, nickel-plated copper, or tin-copper alloy, silver-copper alloy, nickel-copper alloy, etc., which are alloy conductors with copper or silver as the main body in the market. The shielding effects formed by shielding layers composed of different materials are different. Making shielding layers according to different materials can reduce the manufacturing cost of the shielding layer, adjust the thickness of the shielding layer, and avoid the high cost of manufacturing the cable of the endoscope. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic structural view of the present utility model.
[0020] Figure 2 This is a schematic structural view of the prior art.
[0021] Figure 3 This is a schematic structural view of the prior art.
[0022] Figure 4 This is a schematic structural view of the prior art.
[0023] Figure 5 This is a traditional metal braided shield design.
[0024] Figure 6 This is the metal braided shield design of this embodiment.
[0025] In the figure: 1 - conductor, 2 - metal foil tape, 3 - metal winding, 4 - metal braiding. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] In order to facilitate understanding of the technical means, creative features, achieved objectives and effects of the present utility model, the present utility model will be further described below in conjunction with specific embodiments.
[0027] Embodiment 1
[0028] As Figure 1 shown, a cable for an endoscope for anti-electromagnetic interference includes a core wire 1, a shielding component, and a sheath layer. A shielding component is provided outside the core wire 1, and a sheath layer is provided outside the shielding component.
[0029] Referring to Figure 1 , the shielding component includes an inner tape and a shielding layer.
[0030] Among them, the inner tape includes a metal foil tape 2.
[0031] The shielding layer is fixed on the outer layer of the core wire 1 by winding multiple metal conductors. At least two layers of shielding layers are provided, and the shielding layers in the same layer are all wound and installed in one direction, that is, the shielding wire is installed on the outer layer of the core wire 1 in the way of metal winding 3.
[0032] An inner tape is provided outside the core wire 1 and outside the shielding layer. In this embodiment, the material of the metal foil tape 2 includes various metal foils, such as copper foil, aluminum foil, etc. When the cable is normally powered on, the tape material here is metal foil, which is used in combination with the metal-wound shield to further improve the anti-electromagnetic interference ability of the cable.
[0033] In this embodiment, there are two shielding layers, and the shielding wires inside the shielding layers are wound around the surface of the core wire 1 in the same direction.
[0034] As another embodiment, there are two shielding layers, and the shielding wires inside the shielding layers are wound around the surface of the core wire 1 in opposite directions.
[0035] The metal conductors used for winding the shielding layers include: pure silver, bare copper, tinned copper, silver-plated copper, nickel-plated copper, tin-copper alloy, silver-copper alloy, nickel-copper alloy, etc., which are alloy conductors with copper or silver as the main body in the market. The core wire 1 can be composed of a single-core wire or a stranded multi-core wire. In this embodiment, the core wire 1 is made in the form of a single-core wire.
[0036] In summary, the structure of the cable for anti-electromagnetic interference used in an endoscope is as follows: the core wire 1 is arranged in the form of a single-core wire, and a metal foil tape 2 is arranged on the outer layer of the core wire 1; a shielding layer is arranged on the outer side of the metal foil tape 2 outside the core wire 1. The shielding layer is formed by winding multiple metal conductors around the outer side of the metal foil tape 2 in a metal winding 3 manner, and a metal foil tape 2 is arranged on the outer side of this shielding layer; then, another shielding layer is continuously arranged on the outer side of the metal foil tape 2 of the shielding layer. The installation method of the shielding wires in the outer shielding layer is in the form of metal winding 3, and the winding direction is the same as that of the shielding wires in the inner shielding layer; a metal foil tape 2 is arranged on the outer side of the outer shielding layer.
[0037] As another embodiment, when two shielding layers cannot achieve the shielding effect, that is, the shielding efficiency of the shielding layer does not meet the usage requirements, the shielding efficiency of the shielding layer can be improved by adding a shielding layer on the outer side of the shielding layer.
[0038] In this embodiment, the sheath layer is made of a non-metallic material. The materials forming the sheath layer can include non-woven fabric, nylon, etc., and form the sheath layer in the form of a tape and are arranged on the outer side of the shielding component, or the sheath layer can include resin, plastic, silicone rubber, PVC, etc., and form the sheath layer in a fitting manner.
[0039] For the structural design of the traditional shielding layer, refer to Figure 2-4 , in Figure 2 , only one layer of metal foil tape covers the conductor on the outer side; in Figure 3 , one layer of metal foil tape and one shielding layer cover the outer side of the conductor. The shielding layer is covered on the outer side of the metal foil tape in a winding manner; in Figure 4 , one layer of metal foil tape and a double-layer shielding layer cover the outer side of the conductor. The shielding layer is covered on the outer side of the metal foil tape in a braiding manner.
[0040] In Figure 4 , the specifications of the endoscope wire are respectively in the form of a traditional metal braided shielding design ( Figure 4) And the shielding design with double-layer metal conductor winding featuring high shielding coverage rate of the present invention is compared based on the anti-interference test results of GB 4824 RE-Class A as follows Figure 5 , Figure 6 .
[0041] By comparison Figure 5 , Figure 6 it can be found that the test results and safety margin of the double-layer metal conductor winding design with high shielding coverage rate of the present invention are significantly better than those of the traditional metal braiding design.
[0042] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope claimed by the present utility model. The scope claimed by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A cable for an endoscope against electromagnetic interference, comprising a core wire, a shielding component, and a sheath layer, wherein the shielding component is disposed outside the core wire, and the sheath layer is disposed outside the shielding component, characterized in that: the shielding component includes an inner wrapping tape and a shielding layer, the shielding layer is disposed outside the inner wrapping tape or the sheath layer, and the inner wrapping tape can be disposed outside the shielding layer; the shielding layer includes a plurality of single metal conductors wound and adhered together, the shielding layer has at least two layers, the inner wrapping tape is disposed between the shielding layers, and the shielding layer is wound in a fixed direction.
2. The cable for endoscope with electromagnetic interference resistance according to claim 1, wherein: The winding directions of different shielding layers are the same or opposite.
3. The cable for endoscope with anti-electromagnetic interference according to claim 1, characterized in that: The inner wrapping tape can be added outside the core wire or the shielding layer.
4. A cable for an endoscope that resists electromagnetic interference, according to claim 3, characterized in that: The inner wrapping tape includes a metal foil.
5. A cable for an endoscope that resists electromagnetic interference, as described in claim 1, wherein: The core wire includes a single core wire or a stranded multi-core wire.