CN-120531449-B - Radial artery compressor control method and related equipment

CN120531449BCN 120531449 BCN120531449 BCN 120531449BCN-120531449-B

Abstract

The application provides a radial artery compressor control method and related equipment, which can be used in the technical field of image processing, and the method comprises the steps of acquiring a first laser blood image acquired by an image acquisition component on a hand area of a target object, determining target speckle contrast according to pixel intensity of pixel points in the first laser blood image, determining current blood flow rate of the hand area according to the target speckle contrast, controlling an ulnar artery air bag to deflate under the condition that the current blood flow rate indicates that a radial artery is at an occlusion risk, determining target pressure according to the highest pressure pulse wave amplitude of the target object in the process of deflating the ulnar artery air bag, and controlling the ulnar artery air bag to inflate until the pressure applied to the ulnar artery by the ulnar artery air bag reaches blocking pressure, and controlling the radial artery air bag to inflate or deflate until the pressure applied to the radial artery by the radial artery air bag reaches the target pressure. In the application, the blood flow of the radial artery is ensured to be smooth so as to avoid the occlusion of the radial artery.

Inventors

SONG LI
ZHAO XIAOXIAO
CHEN RUNZHEN
ZHOU PENG
ZHAO HANJUN

Assignees

中国医学科学院阜外医院

Dates

Publication Date: 20260508
Application Date: 20250619

Claims (10)

1. A radial artery compressor control method, characterized in that it is applied to a radial artery compressor, the radial artery compressor includes an image acquisition component, a radial artery air bag and an ulnar artery air bag, the radial artery compressor control method includes: acquiring a first laser blood image acquired by the image acquisition component on a hand area of a target object, wherein the target object is used for indicating a user wearing the radial artery compressor; determining a target speckle contrast according to the pixel intensity of a pixel point in the first laser blood image, and determining the current blood flow rate of the hand region according to the target speckle contrast; Controlling the ulnar artery balloon to deflate under the condition that the current blood flow rate indicates that the radial artery is at risk of occlusion, and determining target pressure according to the highest pressure pulse wave amplitude of the target object in the process of deflating the ulnar artery balloon, wherein the target pressure is the pressure applied to the ulnar artery by the ulnar artery balloon under the condition that the pressure pulse wave amplitude of the target object is the highest pressure pulse wave amplitude; and controlling the ulna air bag to be inflated until the pressure applied to the ulna by the ulna air bag reaches a blocking pressure, and controlling the radial air bag to be inflated or deflated until the pressure applied to the radial artery by the radial air bag reaches the target pressure, wherein the blocking pressure is used for indicating the pressure when the ulna air bag presses the ulna to be closed.
2. The method of claim 1, wherein after said determining the current blood flow rate of the hand region from the target speckle contrast, further comprising: Acquiring a blood flow threshold of the radial artery under the condition of occlusion risk; determining that the radial artery has a risk of occlusion if the current blood flow rate is less than the blood flow threshold.
3. The method of claim 2, wherein said obtaining a blood flow threshold for the radial artery at risk of occlusion comprises: Controlling the radial artery air bag and the ulna air bag to be inflated until the pressure applied to the radial artery by the radial artery air bag and the pressure applied to the ulna artery by the ulna air bag reach blocking pressures; Acquiring a second laser blood image acquired by the image acquisition component for the hand region, and determining the initial blood flow rate of the hand region according to the pixel intensity of a pixel point in the second laser blood image; Controlling the ulnar artery balloon to deflate, and determining initial pressure according to the highest pressure pulse wave amplitude of the target object in the process of deflating the ulnar artery balloon, wherein the initial pressure is the pressure of the ulnar artery balloon applied to the ulnar artery when the pressure pulse wave amplitude of the target object is the highest pressure pulse wave amplitude; Controlling the ulnar artery air bag to be inflated until the pressure applied to the ulnar artery by the ulnar artery air bag reaches the initial pressure, and acquiring a third laser blood image acquired by the image acquisition component on the hand area; And determining a reference blood flow rate of the hand region according to the pixel intensity of the pixel point in the third laser blood image, and determining a blood flow threshold of the radial artery under the occlusion risk according to the reference blood flow rate and the initial blood flow rate.
4. A method according to claim 3, wherein said acquiring a first laser blood image acquired by the image acquisition component of a hand region of a target subject comprises: Controlling the ulnar artery balloon to inflate until the pressure applied to the ulnar artery by the ulnar artery balloon reaches the blocking pressure; controlling the radial artery balloon to deflate until the pressure applied by the radial artery balloon to the radial artery reaches the initial pressure; and controlling the image acquisition component to acquire laser blood images of the hand area of the target object by the interval setting time length to obtain the first laser blood image.
5. The method of claim 2, wherein said determining that the radial artery is at risk of occlusion comprises: acquiring a duration that the current blood flow rate is less than the blood flow threshold; and under the condition that the duration reaches a set duration, determining that the radial artery has an occlusion risk.
6. The method of any one of claims 1-5, wherein said determining a target speckle contrast from pixel intensities of pixels in the first laser blood image comprises: determining a region of interest in the first laser blood image, determining a pixel variance and an average pixel intensity according to pixel intensities of pixel points in the region of interest, and determining a total speckle contrast based on the pixel intensities and the average pixel intensity; And determining the noise contrast corresponding to the first laser blood image, and determining the target speckle contrast according to the noise contrast and the total speckle contrast.
7. The method of claim 6, wherein the determining a noise contrast corresponding to the first laser blood image comprises: determining shot noise variance according to the gain parameter of the image acquisition component; determining a time variance according to the image acquired by the image acquisition component under the set condition; And determining the noise contrast corresponding to the first laser blood image according to the shot noise variance, the time variance and the set quantization noise variance.
8. A radial artery compressor, comprising: the acquisition module is used for acquiring a first laser blood image acquired by the image acquisition component of the radial artery compressor on a hand region of a target object, wherein the target object is used for indicating a user wearing the radial artery compressor; The determining module is used for determining target speckle contrast according to the pixel intensity of the pixel point in the first laser blood image and determining the current blood flow rate of the hand area according to the target speckle contrast; A first control module, configured to control an ulna balloon of the radial artery compressor to deflate if the current blood flow rate indicates that a radial artery is at risk of occlusion, and determine a target pressure according to a highest pressure pulse wave amplitude of the target object during deflation of the ulna balloon, where the target pressure is a pressure applied to the ulna by the ulna balloon when the pressure pulse wave amplitude of the target object is the highest pressure pulse wave amplitude; The second control module is used for controlling the ulna air bag to be inflated until the pressure applied to the ulna by the ulna air bag reaches a blocking pressure, and controlling the radial air bag of the radial artery compressor to be inflated or deflated until the pressure applied to the radial artery by the radial air bag reaches the target pressure, wherein the blocking pressure is used for indicating the pressure when the ulna air bag presses the ulna to be closed.
9. The radial artery compressor is characterized by comprising an image acquisition component, a radial artery air bag, an ulnar artery air bag, a processor, a memory and a communication interface, wherein the memory and the communication interface are in communication connection with the processor, and the image acquisition component, the radial artery air bag and the ulnar artery air bag are all in communication connection with the processor; The communication interface is used for communicating with other communication devices; The memory is used for storing computer execution instructions; the processor is configured to execute computer-executable instructions stored in the memory to implement the radial artery compressor control method of any one of claims 1-7.
10. A computer readable storage medium having stored therein computer executable instructions which when executed by a processor implement the radial artery compressor control method of any one of claims 1-7.

Description

Radial artery compressor control method and related equipment Technical Field The application relates to the technical field of image processing, in particular to a radial artery compressor control method and related equipment. Background Radial artery puncture is a common clinical procedure used to obtain arterial blood samples or to perform therapeutic procedures such as catheterization. However, the radial artery puncture can show symptoms such as hematoma and hemorrhage at the puncture point, and the bandages are generally adopted for bandaging, but the bandages can adhere to an arterial sheath used for puncture, the later period is inconvenient to maintain, and meanwhile, the bandages continuously press the puncture part, so that the blood flow of the puncture part is not smooth and the like. In order to avoid bleeding after radial artery puncture, devices such as a compressor are used for hemostasis by pressing the puncture site. The compressor is used by medical staff, but the medical staff often cannot control the compression force when using the compressor, so that the radial artery puncture part of a patient has symptoms of blood stasis, bluish violet, swelling and pain, occlusion and the like caused by improper compression. The principle of radial artery compression with open blood flow is to keep the radial artery unobstructed during compression to reduce the risk of vascular occlusion. In the exemplary technique, the pulse wave amplitude or the blood oxygen saturation degree at the finger is detected to estimate, so that the pulse wave amplitudes of different people have extremely different values, and the difference is also extremely different under different conditions, so that the blood flow cannot be accurately estimated, and the condition of radial artery occlusion occurs, namely, the condition of radial artery occlusion caused by inaccurate blood flow detection exists. Disclosure of Invention The application provides a radial artery compressor control method and related equipment, which solve the problem of radial artery occlusion caused by inaccurate blood flow detection. In a first aspect, the present application provides a radial artery compressor control method, Be applied to radial artery compressor, radial artery compressor includes image acquisition part, radial artery gasbag and ulnar artery gasbag, radial artery compressor control method includes: acquiring a first laser blood image acquired by the image acquisition component on a hand area of a target object, wherein the target object is used for indicating a user wearing the radial artery compressor; determining a target speckle contrast according to the pixel intensity of a pixel point in the first laser blood image, and determining the current blood flow rate of the hand region according to the target speckle contrast; Controlling the ulnar artery balloon to deflate under the condition that the current blood flow rate indicates that the radial artery is at risk of occlusion, and determining target pressure according to the highest pressure pulse wave amplitude of the target object in the process of deflating the ulnar artery balloon, wherein the target pressure is the pressure applied to the ulnar artery by the ulnar artery balloon under the condition that the pressure pulse wave amplitude of the target object is the highest pressure pulse wave amplitude; and controlling the ulna air bag to be inflated until the pressure applied to the ulna by the ulna air bag reaches a blocking pressure, and controlling the radial air bag to be inflated or deflated until the pressure applied to the radial artery by the radial air bag reaches the target pressure, wherein the blocking pressure is used for indicating the pressure when the ulna air bag presses the ulna to be closed. In an embodiment, after determining the current blood flow rate of the hand region according to the target speckle contrast, the method further comprises: Acquiring a blood flow threshold of the radial artery under the condition of occlusion risk; determining that the radial artery has a risk of occlusion if the current blood flow rate is less than the blood flow threshold. In an embodiment, the acquiring a blood flow threshold of the radial artery at risk of occlusion comprises: Controlling the radial artery air bag and the ulna air bag to be inflated until the pressure applied to the radial artery by the radial artery air bag and the pressure applied to the ulna artery by the ulna air bag reach blocking pressures; Acquiring a second laser blood image acquired by the image acquisition component for the hand region, and determining the initial blood flow rate of the hand region according to the pixel intensity of a pixel point in the second laser blood image; Controlling the ulnar artery balloon to deflate, and determining initial pressure according to the highest pressure pulse wave amplitude of the target object in the process of deflating the ulnar artery balloon,