Cannula selection method based on ultrasonic image and ultrasonic imaging system

Abstract

A cannula selection method based on an ultrasonic image and an ultrasonic imaging system are used for a mobile terminal and a handheld ultrasonic device, and the method comprises the steps that the ultrasonic image is displayed in a display interface of the mobile terminal, and the ultrasonic image comprises a blood vessel area corresponding to a blood vessel to be punctured; at least two casing pipe icons are displayed in the display interface at the same time, the casing pipe icons at least comprise a first casing pipe icon and a second casing pipe icon, and the casing pipe icons correspond to different casing pipe sizes; under the condition that a touch operation for the first cannula icon is received, responding to the touch operation for the first cannula icon, and moving the first cannula icon to a blood vessel area; under the condition that the touch operation for the second cannula icon is received, the second cannula icon is moved to the blood vessel area in response to the touch operation for the second cannula icon. According to the invention, the accuracy of casing selection is improved.

Description

Technical Field

[0001] The present invention relates to the field of ultrasonic imaging technology, and more particularly to a cannula selection method based on ultrasonic images and an ultrasonic imaging system. Background Art

[0002] Peripherally inserted central catheter (PICC) is a method of inserting a cannula made of silicone material, marked with scales and capable of radiography, into a vein. High-concentration and highly irritating drugs can enter the central vein directly through the cannula and be quickly diluted, which can greatly reduce the damage of drugs to the patient's blood vessels and minimize the pain of the patient. It is an important method for tumor patients to receive chemotherapy and parenteral nutrition support treatment.

[0003] Compared with traditional methods, the puncture needle used in PICC is thinner, and the damage to blood vessels is also reduced. It is inserted from the antecubital vein to the superior vena cava for infusion treatment, providing a reliable venous access and avoiding many complications of central venous catheterization. The primary condition for successful puncture is an ideal catheterization vein. For patients with good local vascular conditions, the method of visual observation and palpation estimation can be used to evaluate the blood vessels before catheterization. For patients with edema, obesity, repeated chemotherapy, long-term infusion, etc., PICC puncture needs to be performed under ultrasonic guidance. PICC puncture under ultrasonic guidance has the advantages of real-time guidance, full visibility, shortened puncture time, and reduced complications. It can not only relieve the pain of punctured patients, but also provide a safe and effective infusion path for medical staff, avoiding the waste of medical resources. Currently, ultrasonic-guided PICC puncture mainly relies on users to visually select the cannula according to the blood vessel diameter, with insufficient reliability and unable to intuitively judge the cannula suitable for patients. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further elaborated in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] A first aspect of an embodiment of the present invention provides a cannula selection method based on ultrasonic images, which is applied to a mobile terminal and a handheld ultrasonic device. A communication connection is established between the mobile terminal and the handheld ultrasonic device. The handheld ultrasonic device is configured to emit ultrasonic waves to a target object, receive the ultrasonic echoes returned by the target object and obtain ultrasonic echo signals, and process the ultrasonic echo signals to obtain ultrasonic image data. The mobile terminal receives the ultrasonic echo signals sent by the handheld ultrasonic device through the communication connection or receives the ultrasonic image data processed by the handheld ultrasonic device. The mobile terminal is installed with an application program, and the application program is configured to provide a display interface through which human-computer interaction can be performed. The method includes:

[0006] After the mobile terminal runs the application program, an ultrasonic image based on the ultrasonic echo signals or the ultrasonic image data is displayed on the display interface of the mobile terminal. The ultrasonic image includes a blood vessel region corresponding to the blood vessel to be punctured.

[0007] At least two cannula icons are simultaneously displayed on the display interface. The cannula icons at least include a first cannula icon and a second cannula icon, and the at least two cannula icons correspond to different cannula sizes.

[0008] When a touch operation on the first cannula icon by the user is received, in response to the touch operation on the first cannula icon, the first cannula icon is moved to the blood vessel region.

[0009] When a touch operation on the second cannula icon by the user is received, in response to the touch operation on the second cannula icon, the second cannula icon is moved to the blood vessel region.

[0010] In one embodiment, when a touch operation on the first cannula icon by the user is received, in response to the touch operation on the first cannula icon, the first cannula icon is moved to the blood vessel region; when a touch operation on the second cannula icon by the user is received, in response to the touch operation on the second cannula icon, the second cannula icon is moved to the blood vessel region, including:

[0011] Receiving a touch operation on the first cannula icon by the user, and in response to the touch operation on the first cannula icon, moving the first cannula icon from its initial position to the blood vessel region;

[0012] After moving the first cannula icon from its initial position to the blood vessel area, if a touch operation on the second cannula icon is received, in response to the touch operation on the second cannula icon, first move the first cannula icon back from the blood vessel area to its initial position, and then move the second cannula icon from its initial position to the blood vessel area.

[0013] In one embodiment, the touch operation includes a click operation or a drag operation, and the moving the first cannula icon or the second cannula icon to the blood vessel area in response to the touch operation on the first cannula icon or the second cannula icon includes:

[0014] In response to the click operation or the drag operation, automatically move or drag the first cannula icon or the second cannula icon from its initial position to the blood vessel area.

[0015] In one embodiment, the touch operation includes a click-and-drag operation, and the moving the first cannula icon or the second cannula icon to the blood vessel area in response to the touch operation on the first cannula icon or the second cannula icon includes:

[0016] In response to the click-and-drag operation, first automatically move the first cannula icon or the second cannula icon from its initial position to a preset position in the ultrasound image, and then move the first cannula icon or the second cannula icon from the preset position to the blood vessel area.

[0017] In one embodiment, the preset position includes the central position of the ultrasound image.

[0018] In one embodiment, the method further includes:

[0019] Display a median line and / or grid lines passing through the central position of the ultrasound image.

[0020] In one embodiment, the moving the first cannula icon or the second cannula icon to the blood vessel area in response to the touch operation on the first cannula icon or the second cannula icon includes:

[0021] Identify the blood vessel area in the ultrasound image;

[0022] In response to the touch operation on the first cannula icon or the second cannula icon, move the first cannula icon or the second cannula icon to the identified blood vessel area.

[0023] In one embodiment, the method further includes:

[0024] After moving the first cannula icon and / or the second cannula icon to the blood vessel region, a vacancy mark is displayed at the initial position of the first cannula icon and / or the second cannula icon.

[0025] In one embodiment, the method further includes:

[0026] In response to a touch operation on the vacancy mark at the initial position of the first cannula icon and / or the second cannula icon by the user, move the first cannula icon and / or the second cannula icon back to its corresponding initial position.

[0027] In one embodiment, the at least two cannula icons are semi-transparent icons.

[0028] In one embodiment, the initial positions of the at least two cannula icons are superimposed on the ultrasound image.

[0029] In one embodiment, the size of the cannula icon is proportional to the size of the cannula corresponding to the cannula icon.

[0030] In one embodiment, the method further includes:

[0031] Display the value of the size of the cannula corresponding to each cannula icon in the display interface.

[0032] A second aspect of the embodiments of the present invention provides a cannula selection method based on an ultrasound image, the method including:

[0033] Transmit ultrasonic waves to the blood vessel to be punctured, receive the echo signal of the ultrasonic waves, and generate an ultrasound image based on the echo signal, the ultrasound image including a blood vessel region corresponding to the blood vessel to be punctured;

[0034] Display the ultrasound image and at least two cannula icons in a display interface, the cannula icons at least including a first cannula icon and a second cannula icon, the at least two cannula icons corresponding to different cannula sizes;

[0035] Receive a user operation on the first cannula icon through the display interface;

[0036] In response to the user operation on the first cannula icon, move the first cannula icon from the initial position to the blood vessel region.

[0037] In one embodiment, the user operation is a touch operation or a non-touch operation.

[0038] A third aspect of an embodiment of the present invention provides a cannula selection method based on an ultrasonic image, which is applied to a mobile terminal and a handheld ultrasonic device. A communication connection is established between the mobile terminal and the handheld ultrasonic device. The handheld ultrasonic device is configured to emit ultrasonic waves to a target object, receive ultrasonic echoes returned by the target object and obtain ultrasonic echo signals, and process the ultrasonic echo signals to obtain ultrasonic image data. The mobile terminal receives the ultrasonic echo signals sent by the handheld ultrasonic device through the communication connection or receives the ultrasonic image data processed by the handheld ultrasonic device. An application program is installed on the mobile terminal, and the application program is configured to provide a display interface through which human-computer interaction can be performed. The method includes:

[0039] After the mobile terminal runs the application program, an ultrasonic image based on the ultrasonic echo signals or the ultrasonic image data is displayed on the display interface of the mobile terminal. The ultrasonic image includes a blood vessel region corresponding to the blood vessel to be punctured.

[0040] At least two cannula icons corresponding to different cannula sizes are simultaneously displayed on the display interface.

[0041] Identify the blood vessel region in the ultrasonic image, and determine the blood vessel diameter of the blood vessel to be punctured according to the size of the blood vessel region.

[0042] Determine the cannula size of the cannula suitable for puncture according to the blood vessel diameter, and determine the target cannula icon corresponding to the cannula size among the at least two cannula icons.

[0043] Display prompt information about the target cannula icon.

[0044] In one embodiment, the method further includes:

[0045] Receive a touch operation on the target cannula icon through the display interface.

[0046] In response to the touch operation on the target cannula icon, move the target cannula icon from the initial position to the blood vessel region.

[0047] A fourth aspect of an embodiment of the present invention provides a cannula selection method based on an ultrasonic image. The method includes:

[0048] Emit ultrasonic waves to the blood vessel to be punctured, receive the echo signal of the ultrasonic waves, and generate an ultrasonic image based on the echo signal. The ultrasonic image includes a blood vessel region corresponding to the blood vessel to be punctured.

[0049] Display the ultrasonic image and at least two cannula icons in a display interface, where the at least two cannula icons correspond to different cannula sizes;

[0050] Identify the blood vessel region in the ultrasonic image, and determine the blood vessel diameter of the blood vessel to be punctured according to the size of the blood vessel region;

[0051] Determine the cannula size of the cannula suitable for puncture according to the blood vessel diameter, and determine the target cannula icon corresponding to the cannula size among the at least two cannula icons;

[0052] Display prompt information about the target cannula icon.

[0053] A fifth aspect of an embodiment of the present invention provides an ultrasonic imaging system, including a mobile terminal and a handheld ultrasonic device, where a communication connection is established between the mobile terminal and the handheld ultrasonic device;

[0054] The handheld ultrasonic device is configured to emit ultrasonic waves to a target object, receive ultrasonic echoes returned by the target object and obtain ultrasonic echo signals, and process the ultrasonic echo signals to obtain ultrasonic image data;

[0055] The mobile terminal receives the ultrasonic echo signals or the ultrasonic image data processed by the handheld ultrasonic device through the communication connection; an application program is installed on the mobile terminal, and the application program is configured to provide a display interface through which human-machine interaction can be performed; the mobile terminal is further configured to execute the cannula selection method as described above.

[0056] The cannula selection method and the ultrasonic imaging system based on ultrasonic images according to the embodiments of the present invention simultaneously display an ultrasonic image and at least two cannula icons corresponding to different cannula sizes, and the cannula icons are movable. The user can move the cannula icons to the blood vessel region of the ultrasonic image for comparison, and more intuitively select a cannula suitable for puncture, improving the accuracy of cannula selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] By describing the embodiments of the present invention in more detail in conjunction with the drawings, the above and other objects, features, and advantages of the present invention will become more obvious. The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings, the same reference numerals generally represent the same components or steps.

[0058] Figure 1 Show a structural block diagram of an ultrasonic imaging system according to an embodiment of the present invention;

[0059] Figure 2Schematic flowchart showing a cannula selection method based on an ultrasound image according to an embodiment of the present invention;

[0060] Figure 3 Schematic diagram showing a menu bar displayed in a display interface according to an embodiment of the present invention;

[0061] Figure 4 Schematic diagram showing an ultrasound image and at least two cannula icons displayed in a display interface according to an embodiment of the present invention;

[0062] Figure 5 Schematic diagram showing a first cannula icon being moved to a blood vessel area according to an embodiment of the present invention;

[0063] Figure 6 Schematic diagram showing a second cannula icon being moved to a blood vessel area according to an embodiment of the present invention;

[0064] Figure 7 Schematic flowchart showing a cannula selection method based on an ultrasound image according to another embodiment of the present invention;

[0065] Figure 8 Schematic flowchart showing a cannula selection method based on an ultrasound image according to still another embodiment of the present invention;

[0066] Figure 9 Schematic flowchart showing a cannula selection method based on an ultrasound image according to yet another embodiment of the present invention. Detailed implementation manners

[0067] In order to make the objectives, technical solutions and advantages of the present invention more obvious, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments of the present invention. It should be understood that the present invention is not limited by the exemplary embodiments described herein. Based on the embodiments of the present invention described herein, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0068] In the following description, numerous specific details are given to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details. In other instances, some well-known technical features are not described to avoid confusion with the present invention.

[0069] It should be understood that the present invention can be implemented in different forms and should not be construed as limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and will fully convey the scope of the present invention to those skilled in the art.

[0070] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present invention. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, specify the presence of the stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. As used herein, the term "and / or" includes any and all combinations of the related listed items.

[0071] To fully understand the present invention, detailed structures will be presented in the following description to illustrate the technical solutions proposed by the present invention. Optional embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other embodiments.

[0072] Below, first refer to Figure 1 Describe an ultrasonic imaging system 100 according to an embodiment of the present invention. Figure 1 Fig. shows a schematic structural block diagram of an ultrasonic imaging system 100 according to an embodiment of the present invention.

[0073] As Figure 1 shown, the ultrasonic imaging system includes a handheld ultrasonic device 110 and a mobile terminal 120. A communication connection is established between the mobile terminal 120 and the handheld ultrasonic device 110. The handheld ultrasonic device 110 is configured to transmit ultrasonic waves to a target object, receive ultrasonic echoes returned by the target object and obtain ultrasonic echo signals, and process the ultrasonic echo signals to obtain ultrasonic image data. The mobile terminal 120 receives the ultrasonic echo signals transmitted by the handheld ultrasonic device or the ultrasonic image data processed by the handheld ultrasonic device through the communication connection with the handheld ultrasonic device. The mobile terminal 120 is installed with an application program, and the application program is configured to provide a display interface, and human-computer interaction can be performed through the display interface provided by the application program.

[0074] Exemplarily, the mobile terminal 120 may include a mobile electronic device such as a mobile phone, a tablet computer, etc. The mobile terminal 120 has a touch screen, which can be used to obtain the user's touch operations. The user can input touch operations through a finger, a glove, a stylus, etc. The touch screen can provide a display interface, which can be used for human-computer interaction, specifically including displaying ultrasonic images to the user, and receiving the touch operations input by the user and executing specific functions based on the user's operations, such as drawing a selection mark on the ultrasonic image, etc. The communication connection between the mobile terminal 120 and the handheld ultrasonic device 110 can be a wired connection or a wireless connection. The handheld ultrasonic device 110 uses the display interface of the mobile terminal for human-computer interaction. Therefore, the handheld ultrasonic device 110 itself may not be equipped with output devices such as a display and input devices such as a mouse and a trackball, so it is smaller in size and higher in portability.

[0075] Exemplarily, the handheld ultrasonic device 110 includes an ultrasonic probe, a transmitting circuit, a receiving circuit, and a processor. Further, the handheld ultrasonic device 110 may also include a transmit / receive selection switch and a beam synthesis module. The transmitting circuit and the receiving circuit can be connected to the ultrasonic probe through the transmit / receive selection switch. In some embodiments, the handheld ultrasonic device 110 may also be configured with a display.

[0076] The ultrasonic probe includes a plurality of transducer elements. The plurality of transducer elements can be arranged in a row to form a linear array, or arranged in a two-dimensional matrix to form a planar array. The plurality of transducer elements can also form a convex array. The transducer element is used to emit ultrasonic waves according to the excitation electrical signal, or convert the received ultrasonic waves into electrical signals. Therefore, each transducer element can be used to realize the mutual conversion between the electrical pulse signal and the ultrasonic wave, so as to emit ultrasonic waves to the tissue in the target area of the object to be measured, and can also be used to receive the ultrasonic wave echoes reflected by the tissue. During ultrasonic detection, it is possible to control which transducer elements are used to emit ultrasonic waves and which transducer elements are used to receive ultrasonic waves through the transmit sequence and the receive sequence, or control the transducer elements to be used for emitting ultrasonic waves or receiving the echoes of ultrasonic waves in different time slots. The transducer elements participating in the ultrasonic wave emission can be simultaneously excited by electrical signals to emit ultrasonic waves simultaneously; or, the transducer elements participating in the ultrasonic beam emission can also be excited by a plurality of electrical signals with a certain time interval to continuously emit ultrasonic waves with a certain time interval.

[0077] During the ultrasonic imaging process, the processor controls the transmitting circuit to send the delayed and focused transmitting pulses to the ultrasonic probe through the transmit / receive selection switch. The ultrasonic probe is excited by the transmitting pulses to emit an ultrasonic beam to the tissue in the target area of the object to be measured. After a certain time delay, it receives the ultrasonic echo with tissue information reflected from the tissue in the target area and reconverts this ultrasonic echo into an electrical signal. The receiving circuit receives the electrical signal generated by the ultrasonic probe conversion, obtains the ultrasonic echo signal, and sends these ultrasonic echo signals to the beam synthesis module. The beam synthesis module processes the ultrasonic echo data, such as focusing delay, weighting, and channel summation, and then sends it to the processor. The processor processes the ultrasonic echo signal, such as signal detection, signal enhancement, data conversion, logarithmic compression, etc., to form ultrasonic image data. The ultrasonic image data obtained by the processor can be displayed on the display or stored in the memory. The processor can send the ultrasonic image data to the mobile terminal 120 for display, or send the unprocessed ultrasonic echo signal to the mobile terminal 120 for image processing and display.

[0078] Optionally, the processor can be implemented as software, hardware, firmware, or any combination thereof, and can use one or more application specific integrated circuits (ASICs), one or more general integrated circuits, one or more microprocessors, one or more programmable logic devices, or any combination of the foregoing circuits and / or devices, or other suitable circuits or devices. Moreover, the processor can control other components in the handheld ultrasonic device 110 to perform the corresponding steps of the methods in the various embodiments of this specification.

[0079] The handheld ultrasonic device 110 can also include a memory for storing instructions executed by the processor, storing the received ultrasonic echoes, storing ultrasonic images, etc. The memory can be a flash card, solid state memory, hard disk, etc. It can be volatile memory and / or non-volatile memory, removable memory and / or non-removable memory, etc.

[0080] It should be understood that Figure 1 The components included in the illustrated ultrasonic imaging system 100 are only illustrative, and it can include more or fewer components. The present invention is not limited thereto.

[0081] Next, with reference to Figure 2 a method for selecting a cannula based on an ultrasonic image according to an embodiment of the present invention will be described. The cannula selection method of the embodiment of the present invention can be implemented in an ultrasonic imaging system 100 as shown in Figure 1 FIG. Figure 2 is a schematic flowchart of a method 200 for selecting a cannula based on an ultrasonic image according to an embodiment of the present invention.

[0082] like Figure 2 As shown, a cannula selection method 200 based on ultrasound images according to an embodiment of the present invention comprises the following steps:

[0083] In step S210, after the mobile terminal runs the application, an ultrasonic image obtained based on the ultrasonic echo signal or the ultrasonic image data is displayed on a display interface of the mobile terminal, wherein the ultrasonic image includes a blood vessel region corresponding to the blood vessel to be punctured;

[0084] In step S220, at least two casing icons are simultaneously displayed in the display interface, the casing icons at least including a first casing icon and a second casing icon, and the at least two casing icons correspond to different casing sizes;

[0085] In step S230, when a user's touch operation on the first cannula icon is received, the first cannula icon is moved to the blood vessel region in response to the touch operation on the first cannula icon;

[0086] In step S240, when a touch operation on the second cannula icon is received from the user, the second cannula icon is moved to the blood vessel region in response to the touch operation on the second cannula icon.

[0087] When performing PICC catheterization under ultrasound guidance, the user (i.e., medical staff) will first use a handheld ultrasound device to evaluate the target object's (i.e., patient's) blood vessels, and find the blood vessels with a larger inner diameter. When pressed with an ultrasound probe, the blood vessels that can be flattened and have no pulsation are the preferred blood vessels to be punctured - the basilic vein. Figure 3 As shown, a menu bar can be displayed in the display interface of the mobile terminal, and operation controls can be displayed in the menu bar. Under normal conditions, the mobile terminal can hide the menu bar to avoid occupying the display space of the ultrasound image. When a user operation of calling out the menu bar is detected, the mobile terminal displays the menu bar in the display interface. Exemplarily, the user operation of calling out the menu bar can be a touch operation of sliding from the left side of the display interface to the right. The user operation of calling out the menu bar can also be a selection operation for a specific logo, etc. Through the menu bar, you can select an inspection site, such as a vascular (Vascular); select an inspection mode, such as B mode; and turn on the PICC function. After that, you can find the blood vessel to be punctured under the PICC function and select a suitable cannula.

[0088] After enabling the PICC function and starting ultrasonic imaging, the handheld ultrasonic device emits ultrasonic waves towards the blood vessels of the target object, receives the ultrasonic echoes returned by the target object to obtain ultrasonic echo signals, and processes the ultrasonic echo signals to obtain ultrasonic image data. During the scanning process, the transmitting circuit sends a group of transmit pulses with delayed focusing to the ultrasonic probe to stimulate the ultrasonic probe to emit ultrasonic waves towards the target tissue. After the receiving circuit controls the ultrasonic probe to receive the ultrasonic echoes reflected by the target tissue and converts them into electrical signals, the beam synthesis module performs corresponding delay and weighted summation processing on the ultrasonic echo signals obtained from multiple transmissions and receptions to achieve beam synthesis, and then sends them to the processor for subsequent signal processing to obtain ultrasonic image data.

[0089] The mobile terminal is installed with an application program, which is used to provide a display interface through which human-computer interaction can be performed. After the mobile terminal runs the application program, an ultrasonic image based on the ultrasonic echo signal or ultrasonic image data is displayed in the display interface, and the ultrasonic image includes a blood vessel area corresponding to the blood vessel to be punctured. Specifically, the mobile terminal receives the ultrasonic echo signal through the communication connection with the handheld ultrasonic device, processes the ultrasonic echo signal to obtain ultrasonic image data, and displays the ultrasonic image in the display interface. Alternatively, the mobile terminal can directly receive the ultrasonic image data processed by the handheld ultrasonic device and display the ultrasonic image based on the ultrasonic image data in the display interface.

[0090] Referring to Figure 4 , which shows the display interface when the handheld ultrasonic device is a mobile phone. The real-time generated ultrasonic image 410 is displayed in this display interface. Exemplarily, a freeze button is displayed below the ultrasonic image 410, and the user can click the freeze button to freeze the ultrasonic image and perform subsequent cannula selection operations. A median line 430 and grid lines 440 passing through the center position of the ultrasonic image 410 are also displayed in the display interface, thus facilitating the user to select the cannula and assist in positioning. In Figure 4 's example, the median line 430 is a straight line extending longitudinally, and the grid lines 440 include straight lines extending horizontally and longitudinally. To distinguish the two, the median line 430 can be displayed as a dotted line, the grid lines 440 can be displayed as horizontal lines, and they can also be displayed in different colors. In other embodiments, one of the median line 430 and the grid lines 440 can also be selected for display.

[0091] Continuing to refer to Figure 4, To facilitate the user in selecting a sleeve of a suitable size, at least two sleeve icons 420 are simultaneously displayed on the display interface. The sleeve icons 420 at least include a first sleeve icon and a second sleeve icon, and the at least two sleeve icons correspond to different sleeve sizes. The user does not need to adjust the size of the sleeve icons. Instead, the user only needs to compare the sleeve icons of different sizes with the blood vessel area in the ultrasound image. Exemplarily, the sleeve icon can specifically be a circular icon or an annular icon. To facilitate the user in determining the sleeve size corresponding to the sleeve icon, the numerical value of the sleeve size corresponding to each sleeve icon can also be displayed near the sleeve icon.

[0092] Exemplarily, the at least two sleeve icons can correspond to the standard sleeve sizes in a PICC, for example, corresponding to 2Fr (0.67 mm), 3Fr (1.00 mm), 4Fr (1.34 mm), 5Fr (1.67 mm), 6Fr (2.00 mm), 7Fr (2.34 mm), 8Fr (2.67 mm) respectively. The size of the sleeve icon is proportional to the corresponding sleeve size. For example, assuming that the sleeve size corresponding to the first sleeve icon is 2Fr and the sleeve size corresponding to the second sleeve icon is 3Fr, the ratio of the diameter of the first sleeve icon to the diameter of the second sleeve icon is 0.67:1.

[0093] Since the display interface space of the mobile terminal is limited, in order to make full use of the display space of the display interface to display the ultrasound image, the initial positions of the at least two sleeve icons can be superimposed on the ultrasound image. For example, as Figure 4 shown, the at least two sleeve icons can be arranged vertically on the right side of the ultrasound image. The initial positions of the at least two sleeve icons can also be on the left side of the ultrasound image, or arranged horizontally at the top or bottom of the ultrasound image, etc. To reduce the occlusion of the ultrasound image, the at least two sleeve icons can be displayed as semi-transparent icons, so that the ultrasound image below can be seen through the sleeve icons. In this way, when the sleeve icon is moved to the blood vessel area of the ultrasound image, the blood vessel area below can also be seen through the sleeve icon, so as to better compare the sleeve icon with the blood vessel area.

[0094] When the ultrasound image and at least two sleeve icons are simultaneously displayed on the display interface, there is a certain distance between the sleeve icon and the blood vessel area in the ultrasound image. The sleeve icon selected by the user by the naked eye and matching the blood vessel area may not be accurate. Therefore, in the embodiment of the present invention, the at least two sleeve icons are set in a movable form, and the user can move the sleeve icons to the blood vessel area of the ultrasound image one by one, and superimpose the sleeve icon on the blood vessel area for comparison, so as to improve the accuracy of sleeve selection. For example, as Figure 5As shown, when a touch operation of the user on the first cannula icon (taking the cannula icon corresponding to the cannula size of 8Fr as an example) is received, in response to the touch operation on the first cannula icon, the first cannula icon is moved to the blood vessel area; as Figure 6 shown, when a touch operation of the user on the second cannula icon (taking the cannula icon corresponding to the cannula size of 7Fr as an example) is received, in response to the touch operation on the second cannula icon, the second cannula icon is moved to the blood vessel area, and so on. Among them, the first cannula icon and the second cannula icon can be any two cannula icons, that is, the user can select any cannula icon to move to the blood vessel area of the ultrasound image for comparison.

[0095] As an implementation manner, the cannula icon can be moved to the blood vessel area manually. At this time, the touch operation of moving the cannula icon to the blood vessel area can be a drag operation or a click operation. The user can drag any cannula icon, and the mobile terminal responds to the user's drag operation and drags the cannula icon from its initial position to the blood vessel area. If the position dragged once is not appropriate, the user can continue to drag the cannula icon to accurately move it to the blood vessel area. Or, the user can click any cannula icon to make the clicked cannula icon enter the state to be moved; then, the user clicks on the blood vessel area in the ultrasound image, and the mobile terminal responds to the user's click operation and automatically moves the cannula icon in the state to be moved to the blood vessel area.

[0096] As another implementation manner, the cannula icon can be moved to the blood vessel area in a semi-automatic manner. At this time, the touch operation of moving the cannula icon to the blood vessel area can include a click-and-drag operation. Specifically, the mobile terminal responds to the user's click-and-drag operation, first automatically moves the first cannula icon or the second cannula icon from its initial position to a preset position in the ultrasound image, and then moves the first cannula icon or the second cannula icon from this preset position to the blood vessel area.

[0097] Among them, since the user usually places the blood vessel area near the center position of the ultrasound image when performing ultrasound imaging on the blood vessel area, the above preset position can be the center position of the ultrasound image. Exemplarily, the user first clicks on the first cannula icon, and the mobile terminal responds to the user's click operation and moves the first cannula icon from its initial position to the center position of the ultrasound image. Then, the user drags the first cannula icon to fine-tune its position, and the mobile terminal responds to the user's drag operation and moves the first cannula icon from the center position of the ultrasound image to the blood vessel area.

[0098] As another implementation, the cannula icon can be automatically moved to the vascular region. Specifically, the vascular region in the ultrasound image can be identified, and in response to a touch operation on the first cannula icon or the second cannula icon, the first cannula icon or the second cannula icon can be automatically moved to the identified vascular region, thereby improving the cannula selection efficiency. In one example, an edge detection-based image segmentation method can be used to identify and segment the vascular region in the ultrasound image. For example, the discontinuity in the ultrasound image can be detected by edge detection algorithms including but not limited to differential operators, etc., so as to realize the identification and segmentation of the vascular region. In another example, a machine learning model can be used for image segmentation. For example, a trained deep learning neural network model can be used to segment the vascular region, that is, by stacking convolutional layers and fully connected layers to learn the features of a pre-constructed database, so as to directly obtain the region to be segmented and its corresponding category in the input image. Alternatively, an image feature recognition algorithm can also be used to segment the target tissue region. For example, features can be extracted from the image blocks in a predetermined neighborhood around each pixel point in the ultrasound image, and then a classifier can be used to classify the extracted features to determine the category of the image block corresponding to the features, that is, the image blocks are divided into image blocks in the vascular region and image blocks in other regions according to the features of the image blocks, so as to realize the segmentation of the vascular region. After the vascular region is identified, the central position of the vascular region can be determined, and in response to a click operation on any cannula icon, the center of the cannula icon can be moved to the central position of the vascular region, so that the cannula icon is superimposed on the vascular region, facilitating the user to compare the two.

[0099] Exemplarily, after moving a certain cannula icon to the vascular region, a vacancy mark can be displayed at the initial position of the cannula icon to prompt the user of the cannula size corresponding to the cannula icon currently superimposed on the vascular region. As Figure 5 shown, after moving the cannula icon corresponding to the cannula size of 8Fr to the vascular region, a vacancy mark is displayed at the position where the cannula icon corresponding to the cannula size of 8Fr was originally displayed. When the cannula icon is a solid circle, the vacancy mark can be a dotted circle or other marks. The cannula size of 8Fr is displayed below the dotted circle, so the user can be prompted that the cannula size corresponding to the cannula icon currently superimposed on the vascular region is 8Fr. Alternatively, the vacancy mark can also not be displayed, but the vacancy at the initial position can be used to prompt the user that the cannula icon originally displayed at this position has been moved to the vascular region. Optionally, the corresponding cannula size can also be displayed near the cannula icon during the movement of the cannula icon.

[0100] In practical applications, the user can select a first cannula icon that is close to the size of the blood vessel area from at least two cannula icons, or can randomly or sequentially select the first cannula icon, move it to the blood vessel area for comparison. If the first cannula icon is slightly smaller than the blood vessel area, it indicates that the cannula corresponding to the first cannula icon is suitable for puncturing the blood vessel to be punctured. If the first cannula icon selected for the first time is the cannula icon that matches the blood vessel area, other cannula icons may not need to be selected for comparison. After moving the first cannula icon from its initial position to the blood vessel area, if the first cannula icon is too large or too small compared to the blood vessel area, the first cannula icon can be moved back from the blood vessel area to the initial position, and the second cannula icon can be moved to the blood vessel area for comparison.

[0101] Among them, when a touch operation on the second cannula icon is received by the user, in response to the touch operation on the second cannula icon, the first cannula icon is moved back from the blood vessel area to its initial position, and the second cannula icon is moved from its initial position to the blood vessel area. As Figure 5 and Figure 6 shown, when the cannula icon corresponding to the cannula size of 8Fr is displayed in the blood vessel area, if a click operation on the cannula icon corresponding to the cannula size of 7Fr is received, the cannula icon corresponding to the cannula size of 8Fr is moved back to the initial position, and the cannula icon corresponding to the cannula size of 7Fr is moved to the blood vessel area. In this way, the user can quickly complete the comparison of multiple cannula icons with the blood vessel area.

[0102] Alternatively, in response to the touch operation of the user on the vacant mark at the initial position of the first cannula icon or the second cannula icon, the first cannula icon or the second cannula icon can be moved back to its corresponding initial position. For example, when the cannula icon corresponding to the cannula size of 8Fr is displayed in the blood vessel area, if a click operation on the dotted circle corresponding to the cannula size of 8Fr is received, the cannula icon corresponding to the cannula size of 8Fr is moved back to its initial position, and at this time, the cannula icon is no longer displayed in the ultrasound image until the user selects the next cannula icon.

[0103] After the user selects a suitable cannula icon from multiple cannula icons, a suitable cannula can be selected from the puncture kit according to the cannula size corresponding to the cannula icon. Then, a mark is made at the puncture point, the length of the catheter insertion is measured, and a sterile area is established to prepare for puncture.

[0104] In summary, the cannula selection method 200 based on ultrasound images according to the embodiments of the present invention simultaneously displays an ultrasound image and at least two cannula icons corresponding to different cannula sizes, and the cannula icons are movable. The user can move the cannula icons to the blood vessel area of the ultrasound image for comparison, and more intuitively select a cannula suitable for puncture, improving the accuracy of cannula selection.

[0105] AsFigure 7 As shown in Figure 7 , another embodiment of the present invention provides a cannula selection method 700 based on ultrasonic images, and this method includes the following steps:

[0106] In step S710, ultrasonic waves are emitted to the blood vessel to be punctured, the echo signals of the ultrasonic waves are received, and an ultrasonic image is generated based on the echo signals. The ultrasonic image includes a blood vessel region corresponding to the blood vessel to be punctured;

[0107] In step S720, the ultrasonic image and at least two cannula icons are displayed on the display interface. The cannula icons at least include a first cannula icon and a second cannula icon, and the at least two cannula icons correspond to different cannula sizes;

[0108] In step S730, a user operation on the first cannula icon is received through the display interface;

[0109] In step S740, in response to the user operation on the first cannula icon, the first cannula icon is moved from the initial position to the blood vessel region.

[0110] The cannula selection method 700 based on ultrasonic images according to the embodiments of the present invention can be implemented in the ultrasonic imaging system 100 as shown in Figure 1 . At this time, the user operation can be a touch operation received through the mobile terminal. Alternatively, the cannula selection method 700 based on ultrasonic images can also be implemented in other ultrasonic imaging systems outside the ultrasonic imaging system 100. For example, the ultrasonic imaging system for implementing the cannula selection method 700 can be a portable ultrasonic imaging system or a non-portable ultrasonic imaging system with a touch screen, etc. At this time, the user operation can be a touch operation or a non-touch operation received through input devices such as a trackball or a mouse. More specific details of the cannula selection method 700 based on ultrasonic images can refer to the relevant description of the cannula selection method 200 based on ultrasonic images, which will not be elaborated here.

[0111] As Figure 8 shown in Figure 8 , another embodiment of the present invention provides a cannula selection method 800 based on ultrasonic images, and this method can be implemented in the ultrasonic imaging system 100 as shown in Figure 1 . Specifically, the cannula selection method 800 based on ultrasonic images includes the following steps:

[0112] In step S810, after the mobile terminal runs the application program, an ultrasonic image obtained based on the ultrasonic echo signal or the ultrasonic image data is displayed on the display interface of the mobile terminal. The ultrasonic image includes a blood vessel region corresponding to the blood vessel to be punctured;

[0113] ​​​​In step S820, at least two cannula icons are simultaneously displayed in the display interface, and the at least two cannula icons correspond to different cannula sizes;

[0114] In step S830, the blood vessel region in the ultrasound image is identified, and the blood vessel diameter of the blood vessel to be punctured is determined according to the size of the blood vessel region;

[0115] In step S840, the cannula size suitable for puncture is determined according to the blood vessel diameter, and the target cannula icon corresponding to the cannula size is determined among the at least two cannula icons;

[0116] In step S850, prompt information about the target cannula icon is displayed.

[0117] Among them, any suitable image recognition method can be used to identify the blood vessel region in the ultrasound image and determine the size of the blood vessel region. For example, an image segmentation method of edge detection can be used to identify and segment the blood vessel region in the ultrasound image, or a machine learning model can be used to segment the blood vessel region, or an image feature recognition algorithm can also be used to segment the target tissue region, etc. After the blood vessel region is recognized, the size of the blood vessel region can be determined, and the blood vessel diameter can be determined according to the size of the blood vessel region. For example, the blood vessel diameter can be determined according to the size of the inscribed circle of the blood vessel region or the size of the circle obtained by fitting the blood vessel region. After the blood vessel diameter is determined, the cannula size that matches it is determined. The cannula size that matches the blood vessel diameter can be the largest cannula size smaller than the blood vessel diameter or the cannula size closest to the blood vessel diameter, etc. The cannula icon corresponding to the cannula size that matches the blood vessel diameter is the target cannula icon.

[0118] After the target cannula icon is determined, prompt information about the target cannula icon is displayed. For example, the target cannula icon can be prominently displayed by highlighting, flashing, magnifying, changing color, etc. Or, text about the target cannula icon can also be displayed to prompt the user to pay attention to the target cannula icon. The user can visually compare the target cannula icon with the blood vessel region to determine whether the target cannula icon is suitable for puncturing the patient's blood vessel.

[0119] Furthermore, the at least two cannula icons can also be configured in a movable form. A touch operation on the target cannula icon can be received through the display interface. In response to the touch operation on the target cannula icon, the target cannula icon is moved from the initial position to the blood vessel region, so as to more intuitively compare the target cannula icon with the blood vessel region. Since the blood vessel region has been recognized previously, the touch operation on the target cannula icon can include a click operation. After the user clicks the target cannula icon, it is automatically moved to the blood vessel region.

[0120] The cannula selection method 800 based on ultrasonic images according to an embodiment of the present invention simultaneously displays ultrasonic images and at least two cannula icons corresponding to different cannula sizes, and prompts the user to pay attention to the appropriate cannula icon according to the size of the blood vessel region, which can improve the efficiency and accuracy of cannula selection.

[0121] As Figure 9 shown, another embodiment of the present invention provides a cannula selection method 900 based on ultrasonic images, including the following steps:

[0122] In step S910, ultrasonic waves are emitted to the blood vessel to be punctured, the echo signals of the ultrasonic waves are received, and ultrasonic images are generated based on the echo signals. The ultrasonic images include a blood vessel region corresponding to the blood vessel to be punctured;

[0123] In step S920, the ultrasonic images and at least two cannula icons are displayed on a display interface, and the at least two cannula icons correspond to different cannula sizes;

[0124] In step S930, the blood vessel region in the ultrasonic images is recognized, and the blood vessel diameter of the blood vessel to be punctured is determined according to the size of the blood vessel region;

[0125] In step S940, the cannula size of the cannula suitable for puncture is determined according to the blood vessel diameter, and the target cannula icon corresponding to the cannula size is determined among the at least two cannula icons;

[0126] In step S950, prompt information about the target cannula icon is displayed.

[0127] The cannula selection method 900 based on ultrasonic images according to an embodiment of the present invention can be implemented in the ultrasonic imaging system 100 as Figure 1 shown. At this time, the user operation can be a touch operation received through a mobile terminal. Alternatively, the cannula selection method 900 based on ultrasonic images can also be implemented in other ultrasonic imaging systems outside the ultrasonic imaging system 100. For example, the ultrasonic imaging system for implementing the cannula selection method 900 can be a portable ultrasonic imaging system or a non-portable ultrasonic imaging system with a touch screen, etc. At this time, the user operation can be a touch operation or a non-touch operation received through an input device such as a trackball or a mouse. More specific details of the cannula selection method 900 based on ultrasonic images can refer to the relevant descriptions of the cannula selection method 200 and the cannula selection method 800 based on ultrasonic images, which will not be elaborated here.

[0128] An embodiment of the present invention also provides an ultrasonic imaging system for implementing the above-mentioned cannula selection method based on ultrasonic images. Now referring back to Figure 1 , this ultrasonic imaging system can be implemented asFigure 1 The ultrasonic imaging system 100 shown. The ultrasonic imaging system may include a mobile terminal 120 and a handheld ultrasonic device 110, and a communication connection is established between the mobile terminal 120 and the handheld ultrasonic device 110. The handheld ultrasonic device 110 is configured to emit ultrasonic waves to a target object, receive ultrasonic echoes returned by the target object to obtain ultrasonic echo signals, and process the ultrasonic echo signals to obtain ultrasonic image data. The mobile terminal 120 receives the ultrasonic echo signals or the ultrasonic image data obtained by being processed by the handheld ultrasonic device through the communication connection. The mobile terminal 120 is installed with an application program, and the application program is configured to provide a display interface through which human-computer interaction can be performed. The mobile terminal is further configured to execute the cannula selection method as described above. Only the main functions of the components of the ultrasonic imaging system are described above. For more details, refer to the relevant description of the cannula selection method based on ultrasonic images, which will not be elaborated here.

[0129] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present invention thereto. Those of ordinary skill in the art can make various changes and modifications therein without departing from the scope and spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as claimed in the appended claims.

[0130] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0131] In several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0132] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that the embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures, and technologies have not been shown in detail so as not to obscure the understanding of this specification.

[0133] Similarly, it should be understood that, for the purpose of streamlining the present invention and assisting in the understanding of one or more of the various inventive aspects, in the description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present invention should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the corresponding claims, the inventive point lies in that the corresponding technical problems can be solved with features fewer than all the features of a single disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim itself serves as a separate embodiment of the present invention.

[0134] Those skilled in the art will appreciate that, except where features are mutually exclusive, any combination can be used to combine all the features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all the processes or units of any method or apparatus so disclosed. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) can be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0135] In addition, those skilled in the art will be able to understand that, although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0136] The various component embodiments of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) can be used in practice to implement some or all of the functions of some of the modules according to the embodiments of the present invention. The present invention can also be implemented as a device program (such as a computer program and a computer program product) for executing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, or provided on a carrier signal, or in any other form.

[0137] It should be noted that the above embodiments are illustrative of the present invention rather than restrictive of the present invention, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The present invention can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In a unit claim enumerating several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names.

[0138] As described above, the above is only the specific implementation manner of the present invention or the description of the specific implementation manner. The protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered by the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A cannula selection method based on ultrasonic images, which is applied to a mobile terminal and a handheld ultrasonic device, and is characterized in that, A communication connection is established between the mobile terminal and the handheld ultrasonic device. The handheld ultrasonic device is used to emit ultrasonic waves to a target object, receive the ultrasonic echoes returned by the target object and obtain ultrasonic echo signals, and process the ultrasonic echo signals to obtain ultrasonic image data. The mobile terminal receives the ultrasonic echo signals sent by the handheld ultrasonic device through the communication connection or receives the ultrasonic image data processed by the handheld ultrasonic device. The mobile terminal is installed with an application program. The application program is used to provide a display interface, and human-computer interaction can be performed through the display interface. The method includes: After the mobile terminal runs the application program, an ultrasonic image based on the ultrasonic echo signals or the ultrasonic image data is displayed on the display interface of the mobile terminal. The ultrasonic image includes a blood vessel area corresponding to the blood vessel to be punctured. At least two cannula icons are simultaneously displayed on the display interface. The cannula icons at least include a first cannula icon and a second cannula icon, and the at least two cannula icons correspond to different cannula sizes. In the case of receiving a touch operation by the user on the first cannula icon, in response to the touch operation on the first cannula icon, move the first cannula icon to the blood vessel area. In the case of receiving a touch operation by the user on the second cannula icon, in response to the touch operation on the second cannula icon, move the second cannula icon to the blood vessel area.

2. The cannula selection method according to claim 1, characterized in that, The case of receiving a touch operation by the user on the first cannula icon, in response to the touch operation on the first cannula icon, move the first cannula icon to the blood vessel area; in the case of receiving a touch operation by the user on the second cannula icon, in response to the touch operation on the second cannula icon, move the second cannula icon to the blood vessel area includes: Receive a touch operation by the user on the first cannula icon, and in response to the touch operation on the first cannula icon, move the first cannula icon from its initial position to the blood vessel area. After moving the first cannula icon from its initial position to the blood vessel area, if a touch operation by the user on the second cannula icon is received, then in response to the touch operation on the second cannula icon, move the first cannula icon back from the blood vessel area to its initial position, and move the second cannula icon from its initial position to the blood vessel area.

3. The cannula selection method according to claim 1, characterized in that, The touch operation includes a click operation or a drag operation. The case of in response to the touch operation on the first cannula icon or the second cannula icon, move the first cannula icon or the second cannula icon to the blood vessel area includes: In response to the click operation or the drag operation, automatically move or drag the first cannula icon or the second cannula icon from its initial position to the blood vessel area.

4. The cannula selection method according to claim 3, characterized in that, The case of in response to the click operation or the drag operation, automatically move or drag the first cannula icon or the second cannula icon from its initial position to the blood vessel area includes: Identify the blood vessel region in the ultrasound image; In response to a click operation on the first cannula icon or the second cannula icon, automatically move the first cannula icon or the second cannula icon to the identified blood vessel region.

5. The cannula selection method according to claim 1, characterized in that, The touch operation includes a click-and-drag operation. Responding to the touch operation on the first cannula icon or the second cannula icon and moving the first cannula icon or the second cannula icon to the blood vessel region includes: In response to the click-and-drag operation, first automatically move the first cannula icon or the second cannula icon from its initial position to a preset position in the ultrasound image, and then move the first cannula icon or the second cannula icon from the preset position to the blood vessel region.

6. The cannula selection method according to claim 5, characterized in that, The preset position includes the central position of the ultrasound image.

7. The cannula selection method according to claim 1 or 6, characterized in that, It further includes: Display a median line and / or grid lines passing through the central position of the ultrasound image.

8. The cannula selection method according to claim 1, characterized in that, It further includes: After moving the first cannula icon and / or the second cannula icon to the blood vessel region, display a vacancy mark at the initial position of the first cannula icon and / or the second cannula icon.

9. The cannula selection method according to claim 8, characterized in that, It further includes: In response to the user's touch operation on the vacancy mark at the initial position of the first cannula icon and / or the second cannula icon, move the first cannula icon and / or the second cannula icon back to their corresponding initial positions.

10. The cannula selection method according to claim 1, characterized in that, The at least two cannula icons are semi-transparent icons.

11. The cannula selection method according to claim 10, characterized in that, The initial positions of the at least two cannula icons are superimposed on the ultrasound image.

12. The cannula selection method according to claim 1, characterized in that, The size of the cannula icon is proportional to the size of the cannula corresponding to the cannula icon.

13. The casing selection method according to claim 1, characterized in that, It further includes: Display the numerical value of the cannula size corresponding to each cannula icon in the display interface.

14. A casing selection method based on ultrasonic images, characterized in that, The method includes: Emit ultrasonic waves to the blood vessel to be punctured, receive the echo signal of the ultrasonic waves, and generate an ultrasound image based on the echo signal. The ultrasound image includes a blood vessel region corresponding to the blood vessel to be punctured; Display the ultrasound image and at least two cannula icons in a display interface. The cannula icons at least include a first cannula icon and a second cannula icon, and the at least two cannula icons correspond to different cannula sizes; Receive a user operation on the first cannula icon through the display interface; In response to the user operation on the first cannula icon, move the first cannula icon from the initial position to the blood vessel region.

15. The casing selection method according to claim 14, characterized in that, The user operation is a touch operation or a non-touch operation.

16. A casing selection method based on ultrasonic images, applied to a mobile terminal and a handheld ultrasonic device, characterized in that, A communication connection is established between the mobile terminal and a handheld ultrasound device. The handheld ultrasound device is used to emit ultrasonic waves to a target object, receive the ultrasonic echo returned by the target object and obtain an ultrasonic echo signal, and process the ultrasonic echo signal to obtain ultrasound image data; the mobile terminal receives the ultrasonic echo signal sent by the handheld ultrasound device through the communication connection or receives the ultrasound image data processed by the handheld ultrasound device; The mobile terminal is installed with an application program. The application program is used to provide a display interface through which human-computer interaction can be performed. The method includes: After the mobile terminal runs the application program, an ultrasonic image obtained based on the ultrasonic echo signal or the ultrasonic image data is displayed on the display interface of the mobile terminal, and the ultrasonic image includes a blood vessel area corresponding to the blood vessel to be punctured; At least two cannula icons corresponding to different cannula sizes are simultaneously displayed in the display interface; Identify the blood vessel area in the ultrasonic image, and determine the blood vessel diameter of the blood vessel to be punctured according to the size of the blood vessel area; Determine the cannula size of the cannula suitable for puncture according to the blood vessel diameter, and determine the target cannula icon corresponding to the cannula size among the at least two cannula icons; Display a prompt message about the target cannula icon.

17. The casing selection method according to claim 16, characterized in that, Further comprising: Receive a touch operation on the target cannula icon through the display interface; In response to the touch operation on the target cannula icon, move the target cannula icon from the initial position to the blood vessel area.

18. A casing selection method based on ultrasonic images, characterized in that, The method comprises: Transmit ultrasonic waves to the blood vessel to be punctured, receive the echo signal of the ultrasonic waves, and generate an ultrasonic image based on the echo signal, wherein the ultrasonic image includes a blood vessel area corresponding to the blood vessel to be punctured; Display the ultrasonic image and at least two cannula icons in the display interface, the at least two cannula icons corresponding to different cannula sizes; Identify the blood vessel area in the ultrasonic image, and determine the blood vessel diameter of the blood vessel to be punctured according to the size of the blood vessel area; Determine the cannula size of the cannula suitable for puncture according to the blood vessel diameter, and determine the target cannula icon corresponding to the cannula size among the at least two cannula icons; Display a prompt message about the target cannula icon.

19. An ultrasonic imaging system, characterized in that, Comprising a mobile terminal and a handheld ultrasonic device, and a communication connection is established between the mobile terminal and the handheld ultrasonic device; The handheld ultrasonic device is configured to transmit ultrasonic waves to a target object, receive the ultrasonic echo returned by the target object and obtain an ultrasonic echo signal, and process the ultrasonic echo signal to obtain ultrasonic image data; The mobile terminal receives the ultrasonic echo signal or the ultrasonic image data processed by the handheld ultrasonic device through the communication connection; the mobile terminal is installed with an application program, and the application program is configured to provide a display interface through which human-computer interaction can be performed; the mobile terminal is further configured to execute the cannula selection method according to any one of claims 1-18.

Images