Multistage anti-interference connector

Abstract

The utility model relates to the technical field of circuit design, in particular to a multistage anti-interference connector which comprises a magnetic ring A, a filter I, a filter II and a magnetic ring B. The magnetic ring A, the filter I and the filter II are sequentially connected, a shell of the filter I is connected with a shell of the filter II through a wire, and the wire is connected with a ground wire. One end of the magnetic ring B is connected with the lead, and the other end is connected with an output end ground wire. The connector is provided with a multi-stage anti-interference structure, the filtering effect is good, electromagnetic pulse interference is almost completely isolated, the instrument is not interfered by other external instruments or power supplies any more when in use, the quality of displayed images is obviously improved, ultrasonic examination on a patient is facilitated, and the ultrasonic irradiation time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit design, in particular to a multi-stage anti-interference connector. Background Art

[0002] The rotary abortion device is a widely used family planning medical product, ideal for effectively terminating pregnancies. It is commonly used in family planning departments and abortion rooms at all levels of hospitals, often operating in a complex electromagnetic environment. Many hospitals house multiple operating rooms, housing a wide variety of surgical instruments. Due to the diverse conditions of each hospital, operating room construction and maintenance vary widely, leading to electromagnetic pollution within the operating room. Furthermore, the varying age and quality of medical devices can cause interference between them, seriously impacting their proper function. Because each piece of surgical equipment plays a crucial role, a malfunction can sometimes result in serious medical incidents, leading to irreparable economic losses and social impact.

[0003] Currently, the widely used method is to directly feed the mains power into the device, where it is initially filtered and stabilized by an internal LC filter circuit. This simple primary and secondary filtering function can only eliminate electromagnetic pulse interference within a certain frequency range, but is ineffective against high-frequency electromagnetic pulse interference. In operating rooms, where medical equipment is concentrated, if multiple instruments are turned on simultaneously, interference signals in the circuit can enter the ultrasonic detection part of the flow meter, severely interfering with the ultrasound image. This can cause image distortion, interference streaks, and snowy images, significantly hindering the smooth progress of the surgery. Conventional power supply filters can only eliminate electromagnetic interference in certain frequency bands, slightly improving image quality, but still cannot fundamentally eliminate the effects of electromagnetic interference. Summary of the Invention

[0004] In order to solve the above problems, the utility model provides a multi-level anti-interference connector, which reasonably sets multiple sets of magnetic rings and filters to greatly reduce electromagnetic interference. The technical solutions adopted by the utility model are as follows:

[0005] A multi-stage anti-interference connector includes a magnetic ring A, a filter I, a filter II, and a magnetic ring B. The magnetic ring A, filter I, and filter II are connected in sequence. The housing of the filter I and the housing of the filter II are connected by a wire, and the wire is connected to a ground wire. One end of the magnetic ring B is connected to the wire, and the other end is connected to the output end ground wire.

[0006] The multi-stage anti-interference connector further includes a magnetic ring C, one end of which is connected to the input end ground wire, and the other end of which is connected to the filter I ground wire.

[0007] In the above-mentioned multi-stage anti-interference connector, the magnetic ring C is in the form of two groups of magnetic ring parts wound in series.

[0008] The beneficial effects of this utility model are as follows: the connector is equipped with a multi-stage anti-interference structure, which has excellent filtering effects and almost completely isolates electromagnetic pulse interference. The instrument is no longer affected by interference from other external instruments or power sources during use, and the displayed image quality is significantly improved, which helps to improve ultrasound examinations of patients and reduce ultrasound irradiation time. The excellent image quality facilitates the identification and interpretation of patient lesions, improving the efficiency and accuracy of diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the wiring principle of an embodiment of the present utility model.

[0010] In the figure: 1 is magnetic ring A, 2 is filter I, 3 is filter II, 4 is magnetic ring B, and 5 is magnetic ring C. DETAILED DESCRIPTION

[0011] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. The following embodiments are illustrative only. Unless otherwise specified, all technical terms used have the same meanings as those commonly understood by those skilled in the art to which this application belongs. It should be noted that the terms used are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to this application.

[0012] This utility model is a multi-stage anti-interference connector, comprising a magnetic ring A1, a filter I2, a filter II3, a magnetic ring B4, and a magnetic ring C5. Filter I2 is a YB21D4-6A-W model from a certain brand, and filter II3 is a YB21D3-6A-W model from the same brand. The wide frequency bands of these two filters enable more efficient filtering.

[0013] The magnetic ring A1, filter I2, and filter II3 are connected in sequence to enhance the filtering effect. Specifically, one end of the magnetic ring A1 is the input end of the connector, and the other end is connected to the input end of filter I2. The output end of filter I2 is connected to the input end of filter II3, and the output end of filter II3 is the output end of the connector.

[0014] The housing of the filter I2 is connected to the housing of the filter II3 by a wire and the wire is connected to the ground wire. One end of the magnetic ring B4 is connected to the wire and the other end is connected to the output end ground wire. The magnetic ring A1 and the magnetic ring B4 work together

[0015] One end of the magnetic ring C5 is connected to the input ground wire, and the other end is connected to the ground wire of filter I2. The magnetic ring C5 consists of two sets of magnetic ring components wound in series. This further increases the filtering frequency band and reduces electromagnetic interference from various ground wires. When used with surgical instruments in the operating room, this connector significantly improves display image quality, greatly reducing high-frequency interference and achieving excellent image quality.

[0016] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several changes or improvements can be made without departing from the principles of the present application. These changes or improvements should also be regarded as the scope of protection of the present application.

Claims

1. A multi-stage anti-interference connector, characterized in that: The invention comprises a magnetic ring A (1), a filter I (2), a filter II (3) and a magnetic ring B (4), wherein the magnetic ring A (1), the filter I (2) and the filter II (3) are connected in sequence, the housing of the filter I (2) and the housing of the filter II (3) are connected by a wire and the wire is connected to a ground wire, and one end of the magnetic ring B (4) is connected to the wire and the other end is connected to an output end ground wire.

2. The multi-stage anti-interference connector according to claim 1, characterized in that: It also includes a magnetic ring C (5), one end of which is connected to the input end ground wire, and the other end of which is connected to the filter I (2) ground wire.

3. The multi-stage anti-interference connector according to claim 2, characterized in that: The magnetic ring C (5) is in the form of two groups of magnetic ring parts wound in series.

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