CN217587367U

CN217587367U - MD human body network test box for contact current test

Info

Publication number: CN217587367U
Application number: CN202123348568.7U
Authority: CN
Inventors: 李生平; 徐建宇; 蓝雪金; 陈活标
Original assignee: Shenzhen Emtek Co ltd
Current assignee: Shenzhen Emtek Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-10-14
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to an MD human body network test box for contact current testing, which comprises a plastic package outer box and four connection terminals. Because a touch current test circuit device is arranged inside the plastic package outer box, the touch current test circuit device includes a circuit board, a plurality of parallel or series resistors and a plurality of parallel or series capacitors, and a fixed cylinder. During the test, use the four terminals to connect the oscilloscope, the ground wire end, and the end of the medical device to be tested, and the resistance and capacitance inside the touch current test circuit device to form the entire test circuit, and then use the connection to the filter. The voltage measuring instrument and oscilloscope at both ends of the capacitor display the leakage current waveform and current data during the test, so as to achieve the purpose of understanding and observing the leakage current waveform and current data at any time when the medical device is in use.

Description

MD human body network test box for contact current test

[ technical field ] A

The utility model relates to a medical instrument test instrument's technical field specifically is a human network test box of MD for detecting medical instrument electric leakage aspect is used for contact current test.

[ background of the invention ]

There is a need in electronic and electrical laboratories to detect electrical characteristics of a wide variety of electronic products. The medical appliance product also belongs to one of the electrical characteristics to the electronic product. Now, the phenomenon of whether the medical apparatus leaks electricity during the use process is taken as an example. Although most of the existing detection instruments can detect whether a leakage phenomenon exists in the medical instrument during use, the waveform and current data of the leakage current cannot be displayed or observed, and as is known, the current value born by a human body has a limit. If the leakage current is too large, the human body is easy to contact with the leakage current, so that the death accident can be caused.

[ Utility model ] content

In view of this, the technical problem to be solved of the present invention is to provide an MD human body network testing box for contact current testing, which can know and observe the waveform and current data of leakage current at any time when the medical device is used.

Therefore, the technical scheme of the utility model provides a MD human network test box for contact current test, it includes outer box of plastics encapsulation, set up four binding post around outer box of plastics encapsulation, the outer box of plastics encapsulation is inside to be provided with the contact current test circuit device who is used for detecting whether medical instrument leaks electricity when using, this contact current test circuit device includes the circuit board that sets up in outer box of plastics encapsulation, weld a plurality of parallelly connected or series-wound resistances and a plurality of parallelly connected or series-wound electric capacity on the circuit board respectively, the stationary cylinder who is used for fixing the circuit board inside outer box of plastics encapsulation; the plurality of resistors are respectively connected with four wiring terminals arranged on the periphery of the plastic packaging outer box.

Further, the plurality of resistors are respectively 1 non-inductive resistor R1 of 10k Ω and a non-inductive resistor R2 of 1k Ω; the capacitor is a filter capacitor C1 of 0.015 uF; the non-inductive resistor R1, the non-inductive resistor R2 and the filter capacitor C1 are connected in series, and voltage measuring instruments are connected to two ends of the filter capacitor C1.

Further defined, the plastic packaging enclosure includes a test bottom case directly for fixedly mounting the circuit board, and a test upper cover mounted on the test bottom case.

The utility model has the advantages of that: the contact current testing circuit device comprises a circuit board arranged inside the plastic packaging outer box, a plurality of parallel or serial resistors and a plurality of parallel or serial capacitors which are respectively welded on the circuit board, and a fixing cylinder for fixing the circuit board inside the plastic packaging outer box; the plurality of resistors are respectively connected with four wiring terminals arranged on the periphery of the plastic packaging outer box. During testing, the four wiring terminals are respectively connected with the oscilloscope, the ground terminal and the medical equipment terminal to be tested, and the resistor and the capacitor in the contact current testing circuit device to form a whole testing circuit, and then the voltage measuring instrument and the oscilloscope which are connected with the two ends of the filter capacitor are utilized to display the waveform and the current data of the leakage current during testing, so that the purpose of knowing and observing the waveform and the current data of the leakage current at any time when the medical equipment is used is achieved.

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

[ description of the drawings ]

FIG. 1 is a schematic diagram of a back side of a circuit device for testing a contact current according to the present invention;

FIG. 2 is a schematic diagram of a contact current testing circuit device according to the present invention;

FIG. 3 is a schematic diagram of the internal structure of the circuit device for testing contact current according to the present invention;

fig. 4 is a schematic circuit diagram of the circuit device for testing the middle contact current according to the present invention.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects of the present invention to be solved clearer and more obvious, the present invention is further explained in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1 to 4, an MD human body network testing box for contact current testing is described below with reference to an embodiment, which includes a plastic packaging outer box, four terminals disposed around the plastic packaging outer box, and a contact current testing circuit device disposed inside the plastic packaging outer box for detecting whether a medical instrument is leaked during use.

The contact current testing circuit device comprises a circuit board 1 arranged in a plastic packaging outer box, a plurality of parallel or series resistors 2 and a plurality of parallel or series capacitors 3 which are respectively welded on the circuit board 1, and a fixing cylinder 4 for fixing the circuit board 1 in the plastic packaging outer box; the plurality of resistors 2 are connected with four wiring terminals arranged around the plastic packaging outer box.

The plurality of resistors 2 are respectively 1 10k omega non-inductive resistor R1 and 1k omega non-inductive resistor R2; the capacitor 3 is a filter capacitor C1 of 0.015 uF; the non-inductive resistor R1, the non-inductive resistor R2 and the filter capacitor C1 are connected in series, and voltage measuring instruments are connected to two ends of the filter capacitor C1. The plastic outer packaging box comprises a test bottom shell 6 directly used for fixedly mounting the circuit board 1 and a test upper cover 7 mounted on the test bottom shell 6.

During installation, the testing upper cover 7 is installed on the testing bottom shell 6, the circuit board 1 is arranged at the central position inside the testing bottom shell 6 through the fixing cylinder 4, the resistors 2 and the capacitors 3 are respectively welded on the circuit board 1, the resistors 2 and the resistors 2 are connected in parallel or in series, the capacitors 3 are welded on the circuit board 1, and the four wiring terminals are installed on two sides of the testing bottom shell 6. The four connecting terminals are first connecting terminals at the A end, second connecting terminals at the B end, third connecting terminals at the C end and third connecting terminals at the D end.

During testing, the third wiring terminal and the fourth wiring terminal are connected to the oscilloscope, the first wiring terminal is connected to the connecting end of the medical instrument to be tested, and the second wiring terminal is connected to the ground terminal. The device is connected with a resistor 2 and a capacitor 3 in the contact current test circuit device to form a whole test circuit, and then a voltage measuring instrument and an oscilloscope which are connected to the two ends of the capacitor 3 are utilized to display the waveform and current data of the leakage current during the test, so that the purpose of knowing and observing the waveform and current data of the leakage current at any time when the medical instrument is used is achieved.

In the test of this embodiment, utilize this device can watch the waveform and the numerical value of leakage current in real time, easy operation, convenient suitable, safe swift, avoided the time numerical value mistake when measuring, furthest's reduction safety risk. The method can measure the contact leakage current quickly, efficiently, safely and accurately so as to meet the test requirements of different products.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and the scope of the invention is not limited thereto. Any modification, equivalent replacement and improvement made by those skilled in the art without departing from the scope and spirit of the present invention should be within the scope of the claims of the present invention.

Claims

1. An MD human network testing box for contact current testing comprises a plastic packaging outer box and four wiring terminals arranged on the periphery of the plastic packaging outer box, and is characterized in that a contact current testing circuit device for detecting whether a medical instrument leaks electricity when in use is arranged inside the plastic packaging outer box, the contact current testing circuit device comprises a circuit board arranged inside the plastic packaging outer box, a plurality of parallel or serial resistors and a plurality of parallel or serial capacitors which are respectively welded on the circuit board, and a fixing cylinder for fixing the circuit board inside the plastic packaging outer box; the resistors are respectively connected with four wiring terminals arranged on the periphery of the plastic packaging outer box.

2. The MD human network testing box for contact current testing of claim 1, wherein said plurality of resistors are respectively 1 10k Ω non-inductive resistor R1, 1k Ω non-inductive resistor R2; the capacitor is a filter capacitor C1 of 0.015 uF; the non-inductive resistor R1, the non-inductive resistor R2 and the filter capacitor C1 are connected in series, and voltage measuring instruments are connected to two ends of the filter capacitor C1.

3. The MD human network testing cassette for contact current testing of claim 1, wherein the plastic packaging outer box comprises a testing bottom case directly for fixedly mounting the circuit board, and a testing upper cover mounted on the testing bottom case.