CN105054975A - Device capable of improving puncturing precision of chest and abdomen - Google Patents

Abstract

The invention discloses a device for improving the accuracy of thoracoabdominal puncture, which comprises two electrode patches, a high-frequency signal generator, resistors R3, R4, R5, A/D conversion chips, button switches, a single-chip microcomputer and an indicating device; the two The electrode patch is used to contact the human body, and is connected with the resistors R3, R4, R5 through wires to form an electric bridge; the high-frequency signal generator is connected to the diagonal of the electric bridge, and is used to generate high-frequency current to act on the human body; The A/D conversion chip is connected to the other diagonal of the electric bridge, and the output voltage of the electric bridge is converted into a digital signal and then sent to the single-chip microcomputer; the single-chip microcomputer is connected in series with the button switch and the indicating device. The present invention judges the moving position of organs in the body by measuring the impedance of the human body, so that the position of the lesion is consistent during the scanning positioning and puncturing operation, thereby improving the accuracy of puncturing.

Description

A device for improving the accuracy of thoracoabdominal puncture

technical field

The invention relates to a medical device for chest puncture, in particular to a device for improving the accuracy of thoracoabdominal puncture.

Background technique

Thoracoabdominal puncture is widely used in clinical diagnosis. Due to the patient's respiration, the organs in the body will move accordingly. During the two moments of scanning positioning and puncture operation, the movement of the lesion (lesion site) in the body often leads to puncture failure and repeated puncture, which not only increases the pain of the patient , but also increases the risk of puncture.

Contents of the invention

In view of the above-mentioned problems in the prior art, the present invention provides a device for improving the accuracy of thoracoabdominal puncture, which can effectively improve the accuracy of thoracoabdominal puncture, reduce the pain caused by repeated puncture to patients, and reduce the risk of puncture surgery.

In order to achieve the above object, the present invention provides a device for improving the accuracy of chest and abdomen puncture, comprising two electrode patches, a high-frequency signal generator, resistors R3, R4, R5, A/D conversion chips, push button switches, a single-chip microcomputer and an indicating device; The two electrode patches are used to contact the human body, and are connected with the resistors R3, R4, R5 through wires to form an electric bridge; the high-frequency signal generator is connected to the diagonal of the bridge to generate The high-frequency current acts on the human body; the A/D conversion chip is connected to the other diagonal of the bridge, and the output voltage of the bridge is converted into a digital signal and then sent to the single-chip microcomputer; the single-chip microcomputer is connected in series with the button switch and the indicating device.

As a solution of the present invention, the indicating device is an indicator light.

The invention adopts the way of measuring the impedance of the human body to judge the movement of internal organs with breathing. And the indication device shows that the state during puncture is consistent with that during scanning and positioning. By comparing the measured voltage value of human body impedance during scanning and positioning with the measured voltage value of human body impedance during puncture, it is determined that the positions of internal organs and lesions are consistent at these two moments. Thereby, the accuracy of thoracoabdominal puncture can be effectively improved, the pain caused by repeated puncture can be reduced, and the risk of puncture operation can be reduced.

Description of drawings

Fig. 1 is a schematic circuit diagram of the present invention;

In the figure: 1. Electrode patch, 2. High-frequency signal generator, 3. Resistor R3, 4. Resistor R4, 5. Resistor R5, 6. A/D conversion chip, 7. Button switch, 8. Single-chip microcomputer, 9 , indicating device.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, the device for improving the accuracy of thoracoabdominal puncture in the present invention includes two electrode patches 1, a high-frequency signal generator 2, resistors R3, R4, R53, 4, 5, an A/D conversion chip 6, and a button switch 7. Single-chip microcomputer 8 and indicating device; the two electrode patches 1 are used to contact the human body, and are connected with resistors R3, R4, R5 to form an electric bridge; the high-frequency signal generator 2 is a high-frequency signal generator 2 Connect the diagonal of the bridge to generate high-frequency current to act on the human body; the A/D conversion chip 6 is connected to the other diagonal of the bridge to convert the output voltage of the bridge into a digital signal and send it to the microcontroller 8 ; The single-chip microcomputer 8 is connected in series with the button switch 7 and the indicating device.

The indicating device of the present invention can have multiple options, such as an indicator light, a buzzer or a display, etc., and an embodiment provided by the present invention is an indicator light 9 .

When the present invention is in use, two electrode patches 1 are placed one behind the other near the puncture site of the patient, and the high-frequency signal generator 2 generates high-frequency current, which is applied to the human body through the lead wire. Let the patient inhale and then hold his breath before the scanning starts, and press the button switch 7. At this time, the output voltage of the bridge composed of the human body and resistors R3, R4, and R5 is converted into a digital signal by the A/D conversion chip 6 and then sent to Single-chip microcomputer 8, single-chip microcomputer 8 writes down the voltage value at this moment. Then start scanning and positioning, and the patient can breathe freely after scanning; after determining the puncture position and angle, let the patient inhale, when the voltage detected by the single-chip microcomputer 8 is equal to the value at the moment when the button switch 7 is pressed, the control indicator light 9 lights up . At this moment, let the patient hold his breath, and the puncture can be performed. By measuring the body impedance during scanning and puncture, the device makes the lesion at the same position during positioning and operation, avoiding the position change of the lesion caused by organ position movement caused by breathing, which leads to the failure of puncture.

In summary, the device can improve the accuracy of thoracoabdominal puncture, reduce the pain caused by repeated puncture to patients, and reduce the risk of puncture surgery.

Certainly, the above-mentioned embodiments are only preferred solutions of the present invention, and are not limited thereto. On this basis, targeted adjustments can be made according to actual needs, so as to obtain different implementation modes. Since there are many ways of possible realization, it is not necessary to give examples one by one here.

Claims (2)

1. A device for improving the accuracy of thoracoabdominal puncture, characterized in that it includes two electrode patches (1), a high-frequency signal generator (2), resistors R3, R4, R5 (3, 4, 5), A/ D conversion chip (6), button switch (7), single-chip microcomputer (8) and indicating device; The two electrode patches (1) are used to contact the human body, and are connected with resistors R3, R4, R5 (3, 4, 5) through wires to form an electric bridge; The high-frequency signal generator (2) is connected to the diagonal of the bridge, and is used to generate high-frequency current to act on the human body; The A/D conversion chip (6) is connected to another diagonal line of the bridge, converts the output voltage of the bridge into a digital signal and sends it to the single-chip microcomputer (8); The single-chip microcomputer (8) is connected in series with the button switch (7) and the indicating device. 2. The device for improving the accuracy of thoracoabdominal puncture according to claim 1, characterized in that the indicating device is an indicator light (9).