CN-121971747-A - Control method of injection equipment

CN121971747ACN 121971747 ACN121971747 ACN 121971747ACN-121971747-A

Abstract

The invention provides a control method of injection equipment, which comprises the steps of obtaining the liquid inlet pressure and the liquid outlet pressure of a liquid injection cavity of the injection equipment in real time, determining the actual liquid pressure difference of the liquid injection cavity based on the liquid inlet pressure and the liquid outlet pressure, obtaining the rated liquid pressure difference of the liquid injection cavity of the injection equipment, comparing the actual liquid pressure difference with the rated liquid pressure difference, and adjusting the flow of ultrasonic medicine carrying microbubbles and the flow of gel in the liquid injection cavity based on a comparison result. The problem of insufficient precision caused by the dependence of traditional injection on manual experience is effectively solved, the ultrasonic medicine-carrying microbubbles and gel can be ensured to be uniformly mixed according to the preset optimal proportion all the time before injection, so that the stability and the molding quality of the composite medicine are obviously improved, meanwhile, the dependence on the experience of an operator is reduced by an automatic pressure feedback adjustment mechanism, the controllability and the consistency of the injection process are improved, more accurate local medicine administration is facilitated, and a reliable foundation is laid for the subsequent ultrasonic triggering medicine release.

Inventors

ZHANG MINGMING
WANG DINGYI
ZHANG TING
YAN LING

Assignees

中国人民解放军总医院第九医学中心

Dates

Publication Date: 20260505
Application Date: 20260211

Claims (10)

1. A method of controlling an injection device, comprising: Step 1, acquiring the liquid inlet pressure and the liquid outlet pressure of a liquid injection cavity of injection equipment in real time; step 2, determining the actual liquid pressure difference of the liquid injection cavity based on the liquid inlet pressure and the liquid outlet pressure; step3, obtaining rated hydraulic pressure difference of a liquid injection cavity of the injection equipment, and comparing the actual hydraulic pressure difference with the rated hydraulic pressure difference; And 4, acquiring a preset mixing proportion of the ultrasonic medicine-carrying microbubbles and the gel based on the management terminal, and adjusting the flow of the ultrasonic medicine-carrying microbubbles and the flow of the gel in the liquid injection cavity according to the comparison result by taking the preset mixing proportion as a constraint condition.
2. The method according to claim 1, wherein in step 1, the obtaining in real time the liquid inlet pressure and the liquid outlet pressure of the liquid injection chamber of the injection device includes: a hydraulic pressure sensor is arranged at an inlet pipeline of a liquid injection cavity of the injection device, and a hydraulic pressure sensor is arranged at an outlet pipeline of the liquid injection cavity; collecting a liquid inlet pressure signal of the liquid injection cavity in real time based on the liquid inlet pressure sensor, and collecting a liquid outlet pressure signal of the liquid injection cavity in real time based on the liquid outlet pressure sensor; transmitting the liquid inlet pressure signal and the liquid outlet pressure signal to a controller; Based on the controller, the liquid inlet pressure signal is converted into a liquid inlet pressure value, and the liquid outlet pressure signal is converted into a liquid outlet pressure value.
3. The method according to claim 1, wherein in step 2, determining an actual hydraulic pressure difference of the injection chamber based on the inlet pressure and the outlet pressure comprises: And obtaining the obtained liquid inlet pressure and liquid outlet pressure, and performing difference operation on the liquid inlet pressure and the liquid outlet pressure to obtain the actual liquid pressure difference of the liquid injection cavity.
4. The method according to claim 1, wherein in step 3, a rated hydraulic pressure difference of a liquid injection chamber of the injection device is obtained, and the actual hydraulic pressure difference is compared with the rated hydraulic pressure difference, comprising: acquiring the rated liquid pressure difference of the liquid injection cavity of the injection device, and calculating the difference value between the obtained actual liquid pressure difference of the liquid injection cavity and the rated liquid pressure difference of the liquid injection cavity of the injection device; And obtaining a deviation value of the actual hydraulic pressure difference and the rated hydraulic pressure difference based on the difference value calculation result.
5. The method according to claim 1, wherein in step 4, the flow rate of the ultrasound drug-loaded microbubbles and the flow rate of the gel in the injection chamber are adjusted based on the comparison result, comprising: obtaining a deviation value obtained by comparing an actual hydraulic pressure difference with a rated hydraulic pressure difference, and determining the positive and negative values and the magnitude of the deviation value when the deviation value exceeds a preset allowable range; generating a corresponding flow regulation control signal based on the positive and negative values of the deviation value and a preset mixing proportion; respectively sending flow regulation control signals to a first flow control valve for controlling the flow of the ultrasonic drug-carrying microbubbles and a second flow control valve for controlling the flow of the gel; And performing differential control on the opening of the first flow control valve and the opening of the second flow control valve based on the flow regulation control signal, and adjusting the ratio of the flow of the ultrasonic medicine carrying microbubbles injected into the liquid injection cavity to the flow of the gel to a preset mixing ratio based on the differential control result.
6. The method of controlling an injection device according to claim 5, wherein differentially controlling the opening degrees of the first flow control valve and the second flow control valve based on the flow rate adjustment control signal, comprises: judging a dominant path of flow regulation according to the characteristic that the actual hydraulic pressure difference deviates from the rated hydraulic pressure difference: when the actual hydraulic pressure difference is larger than the rated hydraulic pressure difference, judging that the deviation value is positive, generating a control instruction for synchronously reducing the opening of the first flow control valve and the opening of the second flow control valve when the deviation value exceeds a preset allowable range, and determining the reduction amplitude based on a preset mixing proportion; When the actual hydraulic pressure difference is smaller than the rated hydraulic pressure difference, judging that the deviation value is negative, generating a control instruction for synchronously increasing the opening of the first flow control valve and the opening of the second flow control valve when the deviation value exceeds a preset allowable range, and determining an increasing amplitude based on a preset mixing proportion; when the hydraulic pressure difference deviation is caused by the abnormality of the single fluid path, generating a control instruction for mainly adjusting the opening of the flow control valve corresponding to the abnormal path, and performing compensatory fine adjustment on the other path or keeping the opening unchanged; When the actual hydraulic pressure difference is equal to the rated hydraulic pressure difference, keeping the opening of the current first flow control valve and the opening of the second flow control valve unchanged; And executing corresponding control instructions in a self-adaptive manner based on the positive and negative and the size of the deviation value, and synchronously adjusting the injection flow of the ultrasonic medicine carrying microbubbles and the gel based on the execution result.
7. A method of controlling an injection device according to claim 1, further comprising, prior to step 1: Acquiring initial flow set values of an ultrasonic medicine carrying microbubble source and a gel source in injection equipment based on a management terminal; respectively controlling the opening of a first pipeline connected with the ultrasonic medicine carrying microbubble source and a second pipeline connected with the gel source based on the initial flow set value; Based on the control result, controlling the ultrasonic medicine carrying microbubbles and the gel to flow into the liquid injection cavity of the injection device simultaneously through two independent inlets of the three-way pipeline for preliminary mixing.
8. The method of claim 7, wherein controlling the ultrasonic drug-loaded microbubbles and the gel to simultaneously flow into the infusion chamber of the injection device via two independent inlets of the three-way pipe for preliminary mixing based on the control result comprises: Controlling the ultrasonic medicine carrying microbubbles to flow into the mixing section through the first inlet of the three-way pipeline at a first flow rate; controlling the gel to flow into the mixing section through a second inlet of the three-way pipeline at a second flow rate; mixing the ultrasonic drug-loaded microbubbles at the first flow rate with the gel at the second flow rate in the mixing section to generate the crosslinked reticular complex.
9. A method of controlling an injection device according to claim 1, further comprising, after step 4: After the adjustment of the fluid flow in the liquid injection cavity is completed, an injection completion signal is generated; And transmitting an injection completion signal to an ultrasonic generating device in communication connection with the injection device, and starting the ultrasonic generating device based on the transmission result.
10. A method of controlling an injection device according to claim 9, wherein transmitting an injection complete signal to an ultrasound generating means in communication with the injection device comprises: Establishing a connection link between the controller and the ultrasonic generating device based on a preset communication interface; extracting a corresponding time stamp based on the fluid flow regulation result in the liquid injection cavity, and adding the time stamp into an injection completion signal; the injection completion signal carrying the time stamp is transmitted to the ultrasound generating device based on the connection link.

Description

Control method of injection equipment Technical Field The invention relates to the technical field of equipment control, in particular to a control method of injection equipment. Background Currently, in localized bone augmentation treatments, it is necessary to precisely deliver and mix multiple fluid materials to a target site by injection devices; However, in the prior art, the injection process is mostly controlled manually by operators, the injection equipment usually lacks a real-time monitoring and feedback mechanism for fluid pressure in an injection cavity, the mixing proportion of two or more fluid materials is completely preset and manually adjusted by virtue of operation experience, the mixing proportion of the two or more fluid materials cannot be dynamically adjusted according to actual working conditions in the injection process, the deviation of the mixing proportion of the fluid materials is easy to occur, the uniformity and the stability of the injection are difficult to ensure, the effective molding and the adhesion of subsequent materials at a target position can be influenced, in addition, the automation degree of the whole injection process is low, the requirement on the skill of operators is high, and the technical problems of insufficient injection precision and poor consistency caused by human factors exist; accordingly, in order to overcome the above-described drawbacks, the present invention provides a control method of an injection device. Disclosure of Invention The invention provides a control method of injection equipment, which is used for effectively solving the problem of insufficient precision caused by manual experience dependence of traditional injection by monitoring and dynamically adjusting the flow ratio of two liquid medicines in the injection process in real time, ensuring that ultrasonic medicine-carrying microbubbles and gel are uniformly mixed according to a preset optimal proportion all the time before injection, thereby obviously improving the stability and the forming quality of a composite medicine, simultaneously reducing the dependence on the experience of operators by an automatic pressure feedback adjustment mechanism, improving the controllability and the consistency of the injection process, and further being beneficial to realizing more accurate local medicine delivery and laying a reliable foundation for the subsequent ultrasonic triggering medicine release. The invention provides a control method of injection equipment, which comprises the following steps: Step 1, acquiring the liquid inlet pressure and the liquid outlet pressure of a liquid injection cavity of injection equipment in real time; step 2, determining the actual liquid pressure difference of the liquid injection cavity based on the liquid inlet pressure and the liquid outlet pressure; step3, obtaining rated hydraulic pressure difference of a liquid injection cavity of the injection equipment, and comparing the actual hydraulic pressure difference with the rated hydraulic pressure difference; And 4, acquiring a preset mixing proportion of the ultrasonic medicine-carrying microbubbles and the gel based on the management terminal, and adjusting the flow of the ultrasonic medicine-carrying microbubbles and the flow of the gel in the liquid injection cavity according to the comparison result by taking the preset mixing proportion as a constraint condition. Preferably, in step 1, the method for controlling an injection device acquires, in real time, a liquid inlet pressure and a liquid outlet pressure of a liquid injection cavity of the injection device, including: a hydraulic pressure sensor is arranged at an inlet pipeline of a liquid injection cavity of the injection device, and a hydraulic pressure sensor is arranged at an outlet pipeline of the liquid injection cavity; collecting a liquid inlet pressure signal of the liquid injection cavity in real time based on the liquid inlet pressure sensor, and collecting a liquid outlet pressure signal of the liquid injection cavity in real time based on the liquid outlet pressure sensor; transmitting the liquid inlet pressure signal and the liquid outlet pressure signal to a controller; Based on the controller, the liquid inlet pressure signal is converted into a liquid inlet pressure value, and the liquid outlet pressure signal is converted into a liquid outlet pressure value. Preferably, in step2, determining an actual hydraulic pressure difference of the injection cavity based on the inlet pressure and the outlet pressure includes: And obtaining the obtained liquid inlet pressure and liquid outlet pressure, and performing difference operation on the liquid inlet pressure and the liquid outlet pressure to obtain the actual liquid pressure difference of the liquid injection cavity. Preferably, in step 3, a rated hydraulic pressure difference of a liquid injection cavity of the injection device is obtained, and an actual hydraulic pressure differe