Intelligent pressurizing device for intravenous pyelography and using method

Abstract

The invention discloses an intelligent pressurizing device for intravenous pyelography and a using method. The intelligent pressurizing device comprises a control system, a large-flow air pump, a motor assembly, two two-position three-way electromagnetic valves, a pipeline, two rubber air bags, a nylon fastener tape and an abdominal belt. The rubber air bags and the bellyband are of an integrated structure, the rubber air bags are placed at the positions of ureters on the two sides according to the body shape of a patient, the bellyband is connected to the two sides of the body of the patient through nylon hasps, the two rubber air bags expand and protrude towards the inner side, and the rubber air bags are connected with the large-flow air pump and the motor assembly through arranged pipelines. Air flow is conveyed into the rubber air bags through a large-flow air pump and a motor assembly, corresponding numerical values are set through an arranged control system according to the specific conditions of a patient, and two two-position three-way electromagnetic valves are controlled to control the pressure of the rubber air bags on the two sides to the ureter so as to control or prevent a contrast agent from flowing to the bladder from the kidney. Multifunctional control is achieved, radiography examination time is shortened, labor intensity is reduced, and working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of medical device technology, and in particular to a remote-controlled angiography control technology with high reliability, accuracy and efficiency using a single-chip microcomputer as a control core, and in particular to an intelligent pressurization device for intravenous pyelography and a method of use. Background Art

[0002] Intravenous pyelography refers to a method of examining the entire urinary tract lesions by injecting contrast agent intravenously and excreting it into the urinary tract through the kidneys, so as to observe the renal parenchyma, renal pelvis, renal calyces, ureters and bladder. It is also called excretory urography.

[0003] At present, the angiography examination is performed with the patient lying on his back in the middle of the examination bed. Two oval cotton pads are first placed on both sides of the navel, which is equivalent to the place where the ureter passes. A sphygmomanometer cuff is then placed on top of the cotton pads. The sphygmomanometer cuff, cotton pad and abdomen are then tightened together with a multi-head abdominal belt. After the routine intravenous injection of contrast agent, the sphygmomanometer is manually inflated. The purpose of inflation and pressurization is to prevent the contrast agent from leaking from the ureter. The pressure should be limited to the degree that can compress the ureter and keep the contrast agent in the renal pelvis and calyx.

[0004] This conventional contrast examination method requires the stacking of the sphygmomanometer cuff, cotton pads, and the tying of the abdominal band, which sometimes needs to be repeated multiple times. The operation is too cumbersome, time-consuming, and laborious. After the abdominal band is tied, the sphygmomanometer cuff needs to be manually inflated. During the contrast examination, when the pressure gradually decreases due to air leakage in the sphygmomanometer, the staff needs to enter the filming room several times and manually inflate it. If the bilateral renal pelvis and calyces are well developed, the staff will enter the filming room again to remove the pressure belt, allowing the contrast agent to flow downward, filling the ureter and bladder, and performing a full urinary tract radiograph. Summary of the invention

[0005] The present invention provides an intelligent pressurizing device for intravenous pyelography and a method for using the device, which can realize multi-functional control, shorten the examination time and improve the working efficiency, so as to solve the problems existing in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent pressurizing device for intravenous pyelography, comprising a control system, a large-flow air pump and a motor assembly, two two-position three-way solenoid valves, pipelines, two rubber airbags, nylon straps and a belly belt; the rubber airbag and the belly belt are an integrated structure, and the rubber airbag is located on the upper part of the belly belt, and the rubber airbag is placed at the ureter positions on both sides according to the patient's body shape, the belly belt at the bottom and the belly belt at the upper part are connected on both sides of the patient's body through the nylon straps provided, and the nylon straps reserve a wider range to adapt to different patient sizes, and when giving the When the rubber airbag is inflated, the outer abdominal belt does not stretch, and the two rubber airbags expand and bulge inward. The rubber airbag is connected to the large-flow air pump and motor assembly through a provided pipeline, and air flow is transported to the inside of the rubber airbag through the large-flow air pump and motor assembly. Two two-position three-way solenoid valves are respectively provided between the large-flow air pump and motor assembly and the rubber airbag, and the corresponding values ​​are set according to the specific conditions of the patient through the provided control system, and the pressure of the rubber airbags on the ureters on both sides is controlled by controlling the two two-position three-way solenoid valves to control or block the flow of contrast agent from the kidney to the bladder.

[0007] Preferably, a gas pressure transmitter module is provided between the large-flow air pump and motor assembly and the two-position three-way solenoid valve, wherein a SOP-packaged pressure sensor and a signal processing circuit chip are mounted on both sides of the PCB board, respectively, to compensate for the offset, sensitivity, temperature drift and nonlinearity of the sensor, and generate a calibrated and temperature-compensated standard voltage signal.

[0008] Preferably, one side of the two-position three-way solenoid valve is connected to the pipeline via a three-way connection.

[0009] Preferably, a one-way valve is provided on one side of the large-flow air pump and motor assembly, and the airflow generated by the large-flow air pump and motor assembly is transported to the rubber airbag through the one-way valve.

[0010] Preferably, the control system includes a host system and a remote control circuit; the host system includes a single-chip microcomputer AT89S52, a pressure transmitter module and A / D conversion, a host remote control transceiver circuit, a host keyboard circuit, a host digital display circuit, a host output drive circuit and various status indications and alarm circuits; the remote control circuit includes a transmitting part and a remote control receiving circuit.

[0011] Preferably, the host system specifically includes:

[0012] 1) The single-chip microcomputer AT89S52 is the core of the host control system, and an EEPROM AT24C02B memory is configured externally to store the initial data of the control system and the data after power failure; wherein the single-chip microcomputer outputs the air pump motor, two-way solenoid valve, digital tube display and various status indications, alarms and other execution control signals after internal processing according to various input status information;

[0013] 2) The host remote control transceiver circuit; the receiving circuit receives the control signal from the remote control to the single chip microcomputer to realize the control of the load such as the air pump motor; the transmitting circuit transmits the pressure setting and pressurization process signal to the remote control so that the pressure size can be observed on the remote control;

[0014] 3) The host keyboard circuit; the host is provided with 4 buttons K1 to K4; K1 is pressed for the first time to start the system inflation, and is pressed again to pause the inflation, K2 is the system stop button, K3 and K4 are the pressure setting increase and decrease buttons, and K3 or K4 is pressed continuously to control the pressure reduction of the left or right rubber airbag;

[0015] 4) The host digital display circuit; the display circuit is composed of 3 double-bit common cathode digital tubes SN460401; among the 6-bit digital tubes, the upper 3 bits are used to display the pressure setting value, and the lower 3 bits dynamically display the instantaneous value of the pressure;

[0016] 5) The host output drive circuit; the output drive circuit is mainly composed of ULN2803AG, T1 and T2, and is used to drive a six-digit digital tube, an air pump motor, two solenoid valves and an audible and visual alarm load.

[0017] Preferably, the remote control circuit specifically includes:

[0018] 1) The transmitter part is equipped with four buttons S1~S4, which have the same functions as K1~K4 in the host;

[0019] 2) The remote control receiving circuit receives the pressure signal transmitted by the host and drives LED~LED10 to display the pressure of the rubber airbag.

[0020] A method for using an intelligent pressure-adding device for intravenous pyelography comprises the following steps:

[0021] S1. The patient lies supine on the center of the radiographic examination bed, and the integrated upper abdominal belt is connected to the bottom abdominal belt on both sides of the patient's body through Velcro;

[0022] S2. After intravenous injection of contrast agent, the host system in the radiography room or the remote control in the operation room starts the high-flow air pump to automatically inflate and pressurize to the set value, thereby blocking the passage of the ureters on both sides;

[0023] S3, pressure setting value and dynamic instantaneous value are displayed on the host system or the remote control in the operation room for easy observation and control;

[0024] S4. Then perform fluoroscopy or filming. If the contrast agent leaks into the ureter, the doctor will apply pressure using a remote control in the operating room to block the ureteral passage.

[0025] S5. When the image of the affected side is satisfactory, the two-way two-position three-way solenoid valves are remotely controlled to completely release the pressure, and then the entire urinary tract film is taken, and the contrast examination is completed.

[0026] Preferably, in S5, when the renal function is normal, a normal and clear image will be obtained; if there are lesions or abnormal renal function on both sides or one side, poor imaging or no imaging will occur. The doctor can remotely control the decompression on both sides or one side to achieve rapid imaging and filming.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the present invention, after the power of the host is turned on, since the system has a data storage and memory function, the upper 3-digit digital tube on the host displays the last pressure setting value. This setting value can be adjusted by remote control of the host or the remote control according to the specific conditions of different patients; the dynamic instantaneous value of the automatic pressurization process is displayed by the lower 3-digit digital tube. When the pressure exceeds the set upper limit, the host is equipped with an audible and visual alarm function; the set pressure and dynamic instantaneous pressure signal of the host can be fed back to the remote control of the operation room for synchronous display, and remote multiple operations and controls can be realized through the remote control, which is convenient for doctors to observe and control in time.

[0029] 2. In the present invention, during the entire angiography examination process, medical staff do not need to enter the filming room many times to perform manual pressurization, decompression or device adjustment; this not only reduces the tedious operations of the staff during the angiography process, but also shortens the patient's compression time, reduces the patient's pain and X-ray radiation, and improves patient satisfaction; during the angiography process, the staff can grasp the timing of the angiography film well and achieve a good angiography effect; at the same time, the angiography time is saved and the efficiency is improved, the medical staff will not suffer from X-ray radiation innocently, and the occurrence of occupational diseases is reduced or avoided.

[0030] 3. The control system of the present invention adopts a remote control circuit with a single-chip microcomputer as the core, realizing multifunctional remote control of the angiography examination process, which can be set or controlled on the host or on the remote control in the operation room. The host adopts a gas pressure transmitter module, in which a SOP-packaged pressure sensor and a signal processing circuit chip are installed on both sides of the PCB board, respectively, to compensate for the offset, sensitivity, temperature drift and nonlinearity of the sensor, and generate a calibrated and temperature-compensated standard voltage signal, thereby improving the accuracy of control. This module is small in size, easy to install, and has high performance, and is widely used in medical electronics and other fields.

[0031] 4. In the present invention, during the imaging process, if one side of the patient has a lesion or abnormal renal function, resulting in poor or no imaging, the doctor can remotely control the pressure reduction or release of the patient's side to facilitate rapid imaging and filming.

[0032] 5. In the present invention, the integrated upper abdominal belt is connected to the bottom abdominal belt on both sides of the patient's body through Velcro, so that the binding is simple and fast.

[0033] 6. The present invention is a portable intelligent pressurizing device with small size, light weight and reliable operation. It can realize multi-functional control, shorten the angiography examination time, reduce labor intensity and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0035] In the attached picture:

[0036] Figure 1 It is a schematic diagram of the structure of the contrast examination pressurization device of the present invention;

[0037] Figure 2 It is a schematic block diagram of a host computer of the present invention;

[0038] Figure 3 is a schematic diagram of a remote controller block diagram of the present invention;

[0039] Numbers in the figure: 1. Large-flow air pump and motor assembly; 2. One-way valve; 3. Gas pressure transmitter module; 4. Two-position three-way solenoid valve; 5. Pipeline; 6. Rubber airbag; 7. Velcro; 8. Three-way; 9. Belly belt. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0041] Example: Figure 1As shown, an intelligent pressurizing device for intravenous pyelography includes a control system, a large-flow air pump and a motor assembly 1, two two-position three-way solenoid valves 4, a pipeline 5, two rubber airbags 6, a nylon buckle 7 and an abdominal belt 9; the rubber airbag 6 and the abdominal belt 9 are an integrated structure, and the rubber airbag 6 is located on the upper part of the abdominal belt 9, and the rubber airbag 6 is placed at the ureter positions on both sides according to the patient's body shape, and the abdominal belt 9 at the bottom and the upper part of the abdominal belt 9 are provided on both sides of the patient's body through the The nylon buckle 7 is connected to make the tying simple and fast. The nylon buckle 7 has a wide range reserved to adapt to different patient sizes. When the rubber airbag 6 is inflated, the outer abdominal belt 9 has no expansion and contraction, and the two rubber airbags 6 expand and bulge inward. The rubber airbag 6 is connected to the large-flow air pump and motor assembly 1 through the pipeline 5. The airflow is transported to the inside of the rubber airbag 6 through the large-flow air pump and motor assembly 1. After reaching the set value, the pressurization is automatically stopped and maintained. Two two-position three-way solenoid valves 4 are respectively provided between the air pump and motor assembly 1 and the rubber airbag 6, and one side of the two-position three-way solenoid valve 4 is connected to the pipeline 5 through the three-way 8 provided. A one-way valve 2 is provided on one side of the large-flow air pump and motor assembly 1. The airflow generated by the large-flow air pump and motor assembly 1 is transported to the rubber airbag 6 through the one-way valve 2. An XGZP6847 gas pressure transmitter module 3 is provided between the large-flow air pump and motor assembly 1 and the two-position three-way solenoid valve 4, wherein SOP-packaged pressure sensors and signal processing circuit chips are respectively installed on both sides of the PCB board, and the offset, sensitivity, temperature drift and nonlinearity of the sensor are compensated to generate a calibrated and temperature-compensated standard voltage signal, and the corresponding value is set according to the specific situation of the patient through the control system provided, and the pressure of the rubber airbag 6 on the ureter on both sides is controlled by controlling the two two-position three-way solenoid valves 4 to control or block the contrast agent from the kidney to the bladder.

[0042] Among them, Figure 2 and Figure 3 As shown, the control system includes a host system and a remote control circuit; the host system includes a single-chip microcomputer AT89S52, a pressure transmitter module and A / D conversion, a host remote control transceiver circuit, a host keyboard circuit, a host digital display circuit, a host output drive circuit and various status indications and alarm circuits; the remote control circuit includes a transmitting part and a remote control receiving circuit, wherein the host is powered by a lithium battery.

[0043] The host system specifically includes:

[0044] 1) The single-chip microcomputer AT89S52 is the core of the host control system, and an EEPROM AT24C02B memory is configured externally to store the initial data of the control system and the data after power failure; wherein the single-chip microcomputer outputs the air pump motor, two-way solenoid valve, digital tube display and various status indications, alarms and other execution control signals after internal processing according to various input status information;

[0045] 2) The host remote control transceiver circuit; the receiving circuit receives the control signal from the remote control to the single chip microcomputer to realize the control of the load such as the air pump motor; the transmitting circuit transmits the pressure setting and pressurization process signal to the remote control so that the pressure size can be observed on the remote control;

[0046] 3) The host keyboard circuit; the host is provided with 4 buttons K1 to K4; K1 is pressed for the first time to start the system inflation, and is pressed again to pause the inflation key, K2 is the system stop key, K3 and K4 are the pressure setting increase and decrease keys, and K3 or K4 is pressed continuously to control the pressure reduction of the left or right rubber airbag 6;

[0047] 4) The host digital display circuit; the display circuit is composed of 3 double-bit common cathode digital tubes SN460401; among the 6-bit digital tubes, the upper 3 bits are used to display the pressure setting value, and the lower 3 bits dynamically display the instantaneous value of the pressure;

[0048] 5) The host output drive circuit; the output drive circuit is mainly composed of ULN2803AG, T1 and T2, and is used to drive a six-digit digital tube, an air pump motor, two solenoid valves and an audible and visual alarm load.

[0049] During the entire angiography examination process, the doctor can use the remote control in the operating room to arbitrarily adjust the pressure setting value before the examination, start pressurization, pause pressurization and maintain, and completely depressurize and shut down the entire system. The remote control circuit specifically includes:

[0050] 1) The transmitter part is equipped with four buttons S1~S4, which have the same functions as K1~K4 in the host;

[0051] 2) The remote control receiving circuit receives the pressure signal transmitted by the host and drives LED to LED10 to display the pressure of the rubber airbag 6.

[0052] A method for using an intelligent pressure-adding device for intravenous pyelography comprises the following steps:

[0053] S1. The patient lies supinely in the middle of the radiographic examination bed, and the integrated upper abdominal belt 9 is connected to the bottom abdominal belt 9 on both sides of the patient's body through Velcro 7;

[0054] S2. After intravenous injection of contrast agent, the host system in the radiography room or the remote control in the operation room starts the high-flow air pump to automatically inflate and pressurize to the set value, thereby blocking the passage of the ureters on both sides;

[0055] S3, pressure setting value and dynamic instantaneous value are displayed on the host system or the remote control in the operation room for easy observation and control;

[0056] S4. Then perform fluoroscopy or filming. If the contrast agent leaks into the ureter, the doctor will apply pressure using a remote control in the operating room to block the ureteral passage.

[0057] S5. When the renal function is normal, there will be normal and clear images; if there are lesions or abnormal renal function on both sides or one side, poor imaging or no imaging will occur. The doctor can remotely control the decompression on both sides or one side to achieve rapid imaging and filming. When the imaging of the affected side is satisfactory, the two-way two-position three-way solenoid valve 4 is remotely controlled to completely release the pressure, and then the whole urinary tract film is taken, and the contrast examination is completed.

[0058] Specific implementation process: The patient lies supine on the center of the contrast examination bed, and the bottom abdominal belt 9 and the integrated upper abdominal belt 9 are connected to each other on both sides of the patient's body through Velcro 7. After intravenous injection of contrast agent, the host in the filming room or the remote control in the operation room starts the large-flow air pump to automatically inflate and pressurize to the set value, and the pressure blocks the passage of the ureters on both sides. The pressure setting value and dynamic instantaneous value can be displayed on the host and on the remote control in the operation room for observation and control; fluoroscopy or film observation is performed for about 5 minutes. If the contrast agent leaks into the ureter, the doctor can remotely increase the pressure in the operation room to block the ureteral passage. When the renal function is normal, there will be normal and clear images; if there are lesions on both sides or one side or abnormal renal function, poor or no development will occur. The doctor can remotely decompress both sides or one side to facilitate rapid development and filming. When the development of the affected side is satisfactory, the two-way solenoid valve is remotely controlled to completely release the pressure, and then the whole urinary tract film is taken, and the contrast examination is completed.

[0059] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent pressure-adding device for intravenous pyelography, characterized in that: The invention comprises a control system, a large-flow air pump and a motor assembly, two two-position three-way solenoid valves, a pipeline, two rubber air bags, a nylon buckle and an abdominal belt; the rubber air bag and the abdominal belt are an integrated structure, and the rubber air bag is located at the upper part of the abdominal belt, and the rubber air bag is placed at the ureter positions on both sides according to the patient's body shape, the bottom abdominal belt and the upper abdominal belt are connected on both sides of the patient's body through the nylon buckle, and when the rubber air bag is inflated, the outer abdominal belt does not stretch, and the two rubber air bags expand and bulge inward, the rubber air bag is connected to the large-flow air pump and the motor assembly through the pipeline, and the air flow is transported to the inside of the rubber air bag through the large-flow air pump and the motor assembly, two two-position three-way solenoid valves are respectively arranged between the large-flow air pump and the motor assembly and the rubber air bag, and the corresponding values ​​are set according to the specific conditions of the patient through the control system, and the pressure of the rubber air bags on the ureters on both sides is controlled by controlling the two two-position three-way solenoid valves, so as to control or block the contrast agent from the kidney to the bladder.

2. The intelligent pressure-adding device for intravenous pyelography according to claim 1, characterized in that: A gas pressure transmitter module is provided between the large-flow air pump and motor assembly and the two-position three-way solenoid valve, wherein a SOP-packaged pressure sensor and a signal processing circuit chip are mounted on both sides of the PCB board to compensate for the offset, sensitivity, temperature drift and nonlinearity of the sensor, and generate a calibrated and temperature-compensated standard voltage signal.

3. The intelligent pressure-adding device for intravenous pyelography according to claim 1, characterized in that: One side of the two-position three-way solenoid valve is connected to the pipeline via a three-way connection.

4. The intelligent pressure-adding device for intravenous pyelography according to claim 1, characterized in that: A one-way valve is arranged on one side of the large-flow air pump and motor assembly, and the airflow generated by the large-flow air pump and motor assembly is transported to the rubber airbag through the one-way valve.

5. The intelligent pressure-adding device for intravenous pyelography according to claim 1, characterized in that: The control system includes a host system and a remote control circuit; the host system includes a single-chip microcomputer AT89S52, a pressure transmitter module and A / D conversion, a host remote control transceiver circuit, a host keyboard circuit, a host digital display circuit, a host output drive circuit and various status indications and alarm circuits; the remote control circuit includes a transmitting part and a remote control receiving circuit.

6. The intelligent pressure-adding device for intravenous pyelography according to claim 5, characterized in that: The host system specifically includes: 1) The single-chip microcomputer AT89S52 is the core of the host control system, and an EEPROM AT24C02B memory is configured externally to store the initial data of the control system and the data after power failure; wherein the single-chip microcomputer outputs the air pump motor, two-way solenoid valve, digital tube display and various status indications, alarms and other execution control signals after internal processing according to various input status information; 2) The host remote control transceiver circuit; the receiving circuit receives the control signal from the remote control to the single chip microcomputer to realize the control of the load such as the air pump motor; the transmitting circuit transmits the pressure setting and pressurization process signal to the remote control so that the pressure size can be observed on the remote control; 3) The host keyboard circuit; the host is provided with 4 buttons K1 to K4; K1 is pressed for the first time to start the system inflation, and is pressed again to pause the inflation, K2 is the system stop button, K3 and K4 are the pressure setting increase and decrease buttons, and K3 or K4 is pressed continuously to control the pressure reduction of the left or right rubber airbag; 4) The host digital display circuit; the display circuit is composed of 3 double-bit common cathode digital tubes SN460401; among the 6-bit digital tubes, the upper 3 bits are used to display the pressure setting value, and the lower 3 bits dynamically display the instantaneous value of the pressure; 5) The host output drive circuit; the output drive circuit is mainly composed of ULN2803AG, T1 and T2, and is used to drive a six-digit digital tube, an air pump motor, two solenoid valves and an audible and visual alarm load.

7. The intelligent pressure-adding device for intravenous pyelography according to claim 6, characterized in that: The remote control circuit specifically includes: 1) The transmitter part is equipped with four buttons S1~S4, which have the same functions as K1~K4 in the host; 2) The remote control receiving circuit receives the pressure signal transmitted by the host and drives LED~LED10 to display the pressure of the rubber airbag.

8. A method for using the intelligent pressure-adding device for intravenous pyelography according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. The patient lies supine on the center of the radiographic examination bed, and the integrated upper abdominal belt is connected to the bottom abdominal belt on both sides of the patient's body through Velcro; S2. After intravenous injection of contrast agent, the host system in the radiography room or the remote control in the operation room starts the high-flow air pump to automatically inflate and pressurize to the set value, thereby blocking the passage of the ureters on both sides; S3, pressure setting value and dynamic instantaneous value are displayed on the host system or the remote control in the operation room for easy observation and control; S4. Then perform fluoroscopy or filming. If the contrast agent leaks into the ureter, the doctor will apply pressure using a remote control in the operating room to block the ureteral passage. S5. When the image of the affected side is satisfactory, the two-way two-position three-way solenoid valves are remotely controlled to completely release the pressure, and then the entire urinary tract film is taken, and the contrast examination is completed.

9. The method for using the intelligent pressure-adding device for intravenous pyelography according to claim 8, characterized in that: In S5, when the renal function is normal, a normal and clear image will be obtained; if there are lesions or abnormal renal function on both sides or one side, poor imaging or no imaging will occur. The doctor can remotely control the decompression on both sides or only one side to achieve rapid imaging and filming.

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