JPS5911834A - Connector adaptor for monitor apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector adapter for preventing high frequency interference that protects various monitor devices from high frequency currents.The present invention protects various medical monitor devices from the effects of high frequency currents generated by electric scalpels in 1% of cases. The present invention relates to a connector adapter for a monitor device.

In the following, a medical monitor device will be explained as an example.

In general, electric scalpels used for surgery are rated at 03 to iQ during use.
Generates MHz high frequency current. For this reason.

When used on a patient undergoing surgery with a necessary monitoring device such as an ME monitor, electrocardiograph, or transcutaneous blood gas monitor, or with an electric scalpel, the monitor device must be insulated from a direct current perspective by a power transformer, etc. The high frequency current generated between the sensor and the ground (ground) or from the electric scalpel is short-circuited due to the stray capacitance between the primary and secondary windings of the transformer, causing the high frequency current to flow. The measured values of the device may fluctuate significantly, and in some cases, the monitoring device itself may malfunction. As described above, various conventional monitoring devices have the drawback of being affected by high frequency current.

An object of the present invention is to provide a connector adapter for a monitor device that is inserted between a connector of a monitor device and a connector of a sensor in order to prevent high-frequency current from entering various monitor devices.

The present invention will be described in detail below with reference to the drawings.

In FIG. 1, a connector adapter 6 and a capacitor 7 are included for inserting an embodiment of the connector adapter of the present invention into a monitor device such as a -7 pattern. The outer body 2 is provided with a lead 15 wire 4 and a terminal 5 for connection to the ground terminal.

The coil 6 and capacitor 7 constitute a low-pass filter, and the high-frequency current generated by the electric scalpel passes through the sensor lead wire.

Although it reaches the terminal 1, it does not pass through the coil 6, but instead passes through the capacitor 7 and flows through the outer body 2 to the ground terminal. Therefore, the high frequency current does not flow into the bin 6 and does not enter the internal circuit of the monitor device.

On the other hand, the current measured by the sensor has only a much lower frequency fluctuation than the high-frequency current of the electric scalpel and can be regarded as g direct current, so it passes through the coil 6 but not the capacitor 7 and is input to the monitor device. Therefore, even if the connector adapter of the present invention is attached to a monitor device, it does not affect the measurement at all.

In this way, the connector adapter of the present invention protects the internal circuit of the monitor device from the effects of high frequency current generated by the electric scalpel.

As shown in Fig. 1(b), the actual 1 mH coil 6
In the P○-200 PG○2 module adapter, which has a low-pass filter consisting of a 1000 pF capacitor 7 inserted between each bin, if the connector adapter is not installed, the micro CPU of the PCO2 module is The operation was reset, but this phenomenon was not observed when the connector adapter was attached.

FIG. 2 is a diagram showing an example in which the connector adapter of the present invention is applied to a transcutaneous blood gas monitor 8. A connector argeter 11 is sandwiched between the connector (plug) 10 of the sensor 9 and the connector (receptacle) 12 on the monitor device side, and the ground terminal 16 of the monitor device and the outer body (metal) 2 of the adapter are inserted.
A lead wire 14 is used to connect between the two.

Fields of application of the present invention include ME monitors, electrocardiographs, transcutaneous blood gas monitors, respiratory monitors, etc.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the connector adapter of the present invention,
Figure 2 shows the connector adapter of the present invention)! blood? This is an example of application to a gas monitor. 1: Receptacle 2: Outer body lug 4: Lead wire 5: Terminal
6: Coil 7; Capacitor 8; Monitor 9: Sensor 10 Nib Lug 11: Connector adapter 12: Receptacle 13: Earth terminal
14: Lead wire patent applicant Sumitomo Electric Industries, Ltd. (2 others) (a) (b) Figure 2

Claims (1)

[Claims] Connector for monitor device? 1. A connector adapter for a monitor device, which has a low-pass filter comprising a coil connected in series and a capacitor connected in parallel between each corresponding connector pin.