Portable blood vessel measuring device and measuring method

Abstract

The invention relates to the technical field of blood vessel measurement, and discloses a portable blood vessel measuring device and a measuring method.The portable blood vessel measuring device comprises a measuring instrument, a controller and a display screen, the controller and the display screen are arranged on the measuring instrument, the measuring instrument comprises two gauge angles and an installation part, a power source is arranged on the installation part, and the controller and the display screen are also arranged on the installation part and electrically connected with the power source; the tops of the two gauge angles are connected through a rotating shaft, an angle sensor used for detecting the opening angle of the gauge angles is further arranged between the two gauge angles, the angle sensor is electrically connected with the controller, and the controller comprises an angle conversion module, a storage module and a calculation module. The essential progress of the method lies in that blood vessel measurement is upgraded from a software function module to a special intelligent hardware system, and through triple innovation of physical sensing, dynamic calibration and a closed calculation chain, the industrial problem that efficiency and universality cannot be considered at the same time in an existing software-dependent measurement method is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vascular measurement, and particularly relates to a portable vascular measurement device and a measurement method. Background Art

[0002] As the core means of minimally invasive treatment of cardiovascular diseases, interventional surgery relies on angiography technology to obtain real-time image data of the patient's vascular system. By injecting a contrast agent into the blood vessel and combining with X-ray or digital subtraction angiography (DSA) technology, doctors can clearly observe the morphological characteristics of the blood vessel on the computer screen, including the blood vessel course, lumen diameter, and the location of stenosis lesions. Angiography is not only the gold standard for diagnosing vascular diseases but also the key basis for guiding treatment operations such as stent implantation and balloon dilation.

[0003] Among them, in interventional surgery, accurately quantifying the degree of vascular stenosis directly affects the choice of treatment plan and the prognosis. For example, the measurement of the diameter of the stenotic blood vessel determines the suitability of the stent size, and when the stenosis rate (the ratio of the diameter at the stenosis to the diameter of the normal blood vessel) exceeds 70%, emergency intervention is usually required. In addition, the assessment of the risk of restenosis after surgery, the selection of drug-coated balloons, etc. all rely on the accurate analysis of vascular geometric parameters. Therefore, how to quickly and accurately obtain vascular size data has become the core technical challenge for improving the safety and efficacy of surgery.

[0004] Currently, the widely used vascular measurement method in clinical practice is semi-automated measurement based on medical imaging software, specifically including:

[0005] (1) Manual marking method: The doctor uses the mouse to click on the normal blood vessel boundaries at the proximal and distal ends of the stenotic segment on the angiography image in sequence. The software calculates the blood vessel diameter based on the distance between the two points; then repeat the same operation at the most severe stenosis, and after obtaining the value, the system automatically generates the stenosis rate percentage.

[0006] (2) Auxiliary scale method: Some software has a built-in virtual scale function. By dragging the scale line to align with the blood vessel edge and combining with the image scale, the actual blood vessel diameter is calculated.

[0007] (3) Edge detection method: Some advanced software can automatically identify the gray-scale change of the blood vessel wall and generate a blood vessel contour line. The doctor needs to manually adjust the position of the contour line to correct the error, and finally output the diameter data.

[0008] Although the above methods have partially achieved digital measurement, there are still the following significant technical bottlenecks in practical applications:

[0009] 1. The cumbersome operation process leads to low efficiency: When in use, doctors need to switch software tools on the computer and manually mark the blood vessel boundaries. The operation chain is long (e.g., opening the software → selecting the measurement tool → clicking multiple times → calculating the stenosis rate), with many operation steps, which reduces the measurement efficiency.

[0010] 2. Harsh performance requirements for equipment sensitivity, etc.: When using a mouse for blood vessel measurement, such as aligning the scale line with the blood vessel edge by dragging in the auxiliary scale method or manually adjusting the contour line position by the doctor to correct errors in the edge detection method, it has extremely high requirements for the sensitivity of the mouse. In the complex and changeable clinical actual environment, the mouse may experience aging, freezing, delay, poor contact, etc. due to long-term use, resulting in the doctor having to click repeatedly during measurement, increasing the workload and operation errors.

[0011] 3. The dependence on software and hardware restricts the expansion of application scenarios: The existing measurement technology highly depends on dedicated medical imaging workstations and supporting software and hardware devices. For example, in scenarios such as inter-hospital consultations and teaching demonstrations in the operating room, professional software and computers that meet the requirements may not be available in time at the meeting site, resulting in doctors being unable to quickly perform measurements. Moreover, even if the equipment is complete, the startup, loading of the software, and complex measurement operation processes are difficult to meet the requirements of on-site rapid measurement and analysis. In addition, display devices such as tablet computers and projection screens lack adapted measurement tools and are difficult to support real-time interactive analysis in remote consultations, restricting the universality of the technology. Summary of the Invention

[0012] The present invention aims to provide a portable blood vessel measurement device and a measurement method to solve the technical problems of the existing measurement methods, such as cumbersome operation processes, high sensitivity and dependence on equipment.

[0013] To achieve the above object, the present invention adopts the following technical solutions:

[0014] A portable blood vessel measurement device includes a measuring instrument, a controller, and a display screen provided on the measuring instrument. The measuring instrument includes two gauge angles and a mounting portion. A power supply is provided on the mounting portion, and the controller and the display screen are also provided on the mounting portion and are electrically connected to the power supply. The tops of the two gauge angles are connected by a rotating shaft, and an angle sensor for detecting the opening angle of the gauge angles is further provided between the two gauge angles. The angle sensor is electrically connected to the controller, and the controller includes an angle conversion module, a storage module, and a calculation module.

[0015] The angle conversion module is used to convert the opening angle value of the two gauge angles into the side length value corresponding to this angle according to the angle signal detected by the angle sensor and the lengths of the two gauge angles stored in advance. This side length value is the measured diameter of the angiographic blood vessel on the computer display screen. The angle conversion module also sends the converted signal to the storage module, and the storage module sends the stored signal to the calculation module.

[0016] The calculation module is used to calculate the stenosis rate of the narrow blood vessel according to the pre-stored Formula 1 and send the calculated stenosis rate to the display screen for display. Formula 1 is as follows:

[0017]

[0018] Wherein, r1 is the measured diameter of the normal blood vessel at the proximal end of the narrow blood vessel, r2 is the measured diameter of the normal blood vessel at the distal end of the narrow blood vessel, and r3 is the measured diameter at the narrowest part of the narrow blood vessel segment.

[0019] Technical principle: During use, open the two gauge angles so that the tips of the gauge angles are aligned with the two side boundaries of the blood vessel image. At this time, the angle sensor detects the opening angle of the gauge angles and sends the signal to the controller. The angle conversion module in the controller converts the angle value into the measured diameter, and then the stenosis rate of the narrow blood vessel is calculated by the calculation module and displayed on the display screen; that is, the doctor only needs to open the blood vessel image on the computer and magnify it by a certain multiple, then the measuring instrument can directly measure the blood vessel image on the computer screen and directly view the measurement result on the display screen.

[0020] Beneficial effects:

[0021] 1. Significantly simplify the operation process and improve the measurement efficiency: In the traditional marking measurement method, doctors need to accurately click on different positions on the angiography image multiple times, with numerous operation steps and prone to errors; while for the portable blood vessel measuring device of the present invention, when in use, the doctor only needs to open the two gauge angles and align their tips with the two side boundaries of the blood vessel image, and the measuring instrument can automatically complete the whole process from angle detection, diameter conversion to stenosis rate calculation and result display. There is no need to perform cumbersome clicking operations in complex medical imaging software, nor to wait for the software system to perform multiple calculations. The measurement time is reduced from the original 30s - 1min to about 10s, significantly improving the convenience and efficiency of blood vessel measurement operations.

[0022] 2. Greatly reduce equipment dependence: The existing blood vessel measurement method based on mouse operation has extremely high requirements for mouse sensitivity. Once problems such as mouse aging and poor contact occur, it will seriously affect the measurement efficiency and accuracy; the measuring instrument of the present invention is completely independent of devices such as computer mice. Its internal core components such as angle sensors and controllers work together, unaffected by the performance fluctuations of external devices. As long as the power supply of the measuring instrument itself is normal and the functions of each module are intact, it can perform blood vessel measurement stably, accurately and quickly. This makes the measurement process more reliable, ensuring that blood vessel measurement work can be efficiently completed in various clinical environments and avoiding problems such as measurement obstruction or increased errors caused by external device problems.

[0023] 3. Greatly improve the applicability in specific scenarios and enhance the flexibility of use: In meeting scenarios such as consultations and trainings, the traditional measurement methods based on professional medical imaging software and compatible computer devices often cannot meet the on-site rapid measurement and analysis requirements due to insufficient equipment allocation, compatibility issues, or time-consuming software startup and loading. The measuring instrument of the present invention has a simple structure and is easy to carry. Doctors do not need to rely on the perfect cooperation of specific software and computer devices. They only need to open the blood vessel image on the computer and zoom in to an appropriate magnification, then they can take out the measuring instrument at any time for measurement and quickly obtain diameter and stenosis rate data on the display screen. This provides great convenience for blood vessel measurement and analysis at the meeting site, strongly supports the timeliness of consultation discussions and training effects, and significantly improves the practicality and convenience of blood vessel measurement in various specific scenarios.

[0024] 4. Reduce medical costs: Traditional blood vessel measurement methods require professional medical imaging software, which is usually expensive and requires regular updates and maintenance, increasing the hospital's equipment procurement and operation and maintenance costs. This technical solution uses an independent portable measuring instrument, eliminating the need to rely on expensive software, thus reducing the equipment procurement cost. At the same time, due to the simple operation, the doctor's measurement time is reduced, indirectly improving the utilization efficiency of medical resources. In the long run, it helps to reduce the overall medical cost and improve the cost performance of medical services.

[0025] Preferably, as an improvement, a key module is further provided on the installation part. The key module includes a calibration button and a switch button. The calibration button is electrically connected to the controller. When the calibration button is pressed, the controller records a signal sent by the angle sensor once. At this time, the angle conversion module converts the angle signal into a measured diameter and sends the converted signal to the storage module and the calculation module.

[0026] Beneficial effects: When actually measuring blood vessel images, doctors may accidentally touch or for other reasons cause the angle sensor to send signals prematurely or unnecessarily during the process of adjusting the angle of the angle gauge. The newly added calibration button can effectively solve this problem. That is, only when the doctor confirms that the tip of the angle gauge is accurately aligned with the two sides of the blood vessel image and presses the calibration button, the controller will record the signal sent by the angle sensor. This design ensures that each measurement is triggered when the doctor believes it is the most accurate state, avoiding measurement errors caused by non-expected signal recording, greatly improving the accuracy of the measurement operation, and enabling the measurement results to more truly reflect the actual size of the blood vessel.

[0027] Preferably, as an improvement, the angle gauge includes a first angle gauge and a second angle gauge. The tip of the first angle gauge is provided with a suction cup, and the center of the tip is consistent with the center of the suction cup. The surface of the suction cup is provided with a number of marking lines passing through the center of the suction cup.

[0028] Beneficial effects:

[0029] 1. The suction cup set at the tip of the first gauge angle can be adsorbed and positioned on the computer screen, preventing the gauge angle from accidentally moving during the measurement process. This stability enables the angle sensor to continuously and stably detect the opening angle of the gauge angle, avoiding fluctuations in the angle data caused by the shaking of the gauge angle, and ensuring the stability and reliability of the measurement process.

[0030] 2. Several marking lines passing through the center on the surface of the suction cup provide clear and intuitive positioning references for doctors. On the one hand, it is convenient for doctors to quickly identify the boundary for positioning; on the other hand, when the doctor aligns the marking line with the boundary of the blood vessel image, the position of the tip of the gauge angle on the blood vessel boundary can be accurately determined, thereby improving the accuracy of the measurement starting point.

[0031] Preferably, as an improvement, a strip-shaped groove is also provided on the suction cup along the diameter direction of the suction cup. The strip-shaped groove is used for avoiding and accommodating the second gauge angle when it is closed.

[0032] Beneficial effects: During daily use, if the gauge angle is placed randomly, it is very easy to be deformed due to collision and extrusion; the existence of the strip-shaped groove provides a special accommodation position for the second gauge angle. During the accommodation and carrying process, the second gauge angle is safely placed in the groove, isolated from other items, reducing the risk of damage to the gauge angle caused by accidental collision; it helps to extend the service life of the gauge angle, ensures that the measuring instrument can maintain high-precision measurement performance stably for a long time, and reduces the equipment maintenance and replacement costs.

[0033] Preferably, as an improvement, a laser indicator is also provided on the second gauge angle. The emission point of the laser indicator is located at the tip of the second gauge angle, and the laser indicator is electrically connected to the controller; when the angle sensor detects that the two gauge angles are opened, a signal is sent to the controller, and the controller controls the laser indicator to turn on.

[0034] Beneficial effects:

[0035] 1. When measuring the blood vessel image, accurately determining the position of the tip of the second gauge angle is crucial. By setting the emission point of the laser indicator at the tip of the second gauge angle, doctors can use this beam of laser to more accurately align the tip of the second gauge angle with the blood vessel boundary. Compared with relying solely on the naked eye observation, it greatly improves the positioning accuracy; especially in the case of complex details and blurred boundaries of the blood vessel image, the clear indication provided by the laser indicator ensures the accuracy of the measurement point, laying a solid foundation for the subsequent angle sensor to obtain accurate angle data and the angle conversion module to calculate the accurate measurement diameter.

[0036] 2. When the angle sensor detects that the gauge angle is in the open state, it triggers the controller to turn on the laser indicator. The entire process has a high degree of automation and does not require an additional start switch. This collaborative mechanism improves the functional system of the measuring device and makes it more practical in clinical applications. Whether in daily diagnosis, real-time measurement during surgery, or in scenarios such as consultations and training, the laser indicator can provide efficient and accurate measurement assistance for doctors, enhancing the applicability and practicality of the measuring instrument in different medical scenarios and better meeting the needs of medical workers for convenient, efficient, and accurate measurement.

[0037] Preferably, as an improvement, a sensor is further provided in the strip-shaped groove. The sensor is electrically connected to the controller. When the sensor detects that the first gauge angle is closed, it sends a signal to the controller, and the controller controls the laser indicator to turn off; otherwise, it controls the laser indicator to turn on.

[0038] Beneficial effects: When the doctor closes the first gauge angle and places it in the strip-shaped groove, the sensor immediately captures this action and quickly sends a signal to the controller. The controller then precisely controls the laser indicator to turn off; conversely, as long as the first gauge angle is in the open state, the laser indicator remains on. This intelligent control logic enables the laser indicator to work only when actual measurement is required, avoiding unnecessary activation, reducing energy consumption, increasing service life, and reducing operation steps, improving the overall fluency and convenience of the operation.

[0039] Preferably, as an improvement, a switching button is further provided on the installation part. The switching button is electrically connected to the controller. Multiple standard catheter models and the diameters of the corresponding standard catheters are pre-stored in the controller. The switching button is used to select the standard catheter type and display the selected standard catheter model and diameter on the display screen.

[0040] Beneficial effects: Before obtaining the blood vessel image, it is necessary to insert a standard catheter into the blood vessel. By selecting the same model as the standard catheter inserted into the blood vessel on the measuring instrument, it is convenient to calculate the magnification factor of the blood vessel image based on the measured diameter of the standard catheter and the actual diameter, and thus calculate the actual diameter of the stenotic blood vessel.

[0041] Preferably, as an improvement, the calculation module further includes a blood vessel diameter calculation unit, which is used to calculate the actual diameter of the blood vessel according to the preset formula two. The formula two is as follows:

[0042]

[0043] Where r (1、2、3) is the measured diameter obtained after conversion by the angle conversion module, r0 is the magnified measured diameter obtained by the first measurement of the standard catheter, and fx is the actual diameter corresponding to a certain type of standard catheter, including f4, f5, and f6.

[0044] Beneficial effects: In vascular measurement, due to factors such as the display ratio of the computer screen, the directly measured blood vessel diameter is not its actual size. This application calibrates by introducing the measurement data of a standard catheter. First, the standard catheter is measured to obtain the enlarged measured diameter r0. Combining the known actual diameter fx of the standard catheter, the magnification ratio of the screen display can be accurately calculated. On this basis, substituting the blood vessel measurement diameter r obtained by the angle conversion module into the formula can obtain the actual diameter of the blood vessel. This calculation method based on the calibration of the standard catheter effectively eliminates the interference of the screen display factor on the measurement result. During actual measurement, no matter how many times the blood vessel image is magnified, the actual diameter of the blood vessel can be directly displayed on the display screen, which helps doctors more accurately select the devices suitable for implantation into the blood vessel subsequently. (1、2、3) Preferably, as an improvement, a flexible display screen is further provided between the first gauge angle and the second gauge angle. The flexible display screen is electrically connected to the controller. The flexible display screen has two straight edges and at least one arc edge, and the two straight edges of the flexible display screen are respectively connected to the first gauge angle and the second gauge angle. After receiving the signal from the angle sensor, the controller is used to control the flexible display screen to uniformly display scale lines along the arc edge, and the scale lines are protractor scale lines.

[0045] Beneficial effects: The addition of the flexible display screen enriches the function system of the measuring instrument. Originally, the measuring instrument mainly focused on the measurement and calculation of blood vessel diameter and stenosis rate. Now, by displaying protractor scale lines on the flexible display screen, the angle measurement and display function are added. This enables the measuring instrument to be used not only for vascular measurement but also in some other medical scenarios or related experiments that require angle measurement. For example, in an experiment studying the relationship between blood vessel bending angle and diseases, doctors can directly obtain angle data using this measuring instrument. The expansion of this function improves the application range and practicality of the device, making it a more versatile medical auxiliary tool and providing convenience for medical workers in different fields.

[0046] A portable vascular measurement method uses a portable vascular measurement device as a measurement tool, including the following steps:

[0047] S1. Magnify the image of the angiographic segment of the blood vessel to be measured on the computer display screen by a certain multiple;

[0048] S2. Press the switch button on the measuring instrument to start, then press the switching button to select the model of the standard catheter currently inserted into the blood vessel. After selection and confirmation, send the corresponding actual diameter to the storage module, which is recorded as f4, f5, or f6 in the storage module;

[0049] S2. Press the switch button on the measuring instrument to start, then press the switching button to select the model of the standard catheter currently inserted into the blood vessel. After selection and confirmation, send the corresponding actual diameter to the storage module, which is recorded as f4, f5, or f6 in the storage module;

[0050] S3, open the two gauge angles of the measuring instrument, so that the tips of the two gauge angles are located at the two side boundaries of the standard catheter on the image, and then press the calibration button. At this time, the controller records the angle signal sent by the current angle sensor; and converts the angle signal into the measured diameter of the standard catheter through the angle conversion module, and the storage module stores it and records it as r0;

[0051] S4, moving the measuring instrument to the two sides of the normal blood vessels proximal to the stenotic blood vessel segment, and after determining the position, pressing the calibration button to obtain the measured diameter of the proximal normal blood vessel, and storing it in the storage module as r1;

[0052] S5, moving the measuring instrument to the two sides of the normal blood vessels distal to the stenotic blood vessel segment, pressing the calibration button, obtaining the measured diameter of the distal normal blood vessel, and storing it in the storage module as r2;

[0053] S6, moving the measuring instrument to the two sides of the narrowest part of the stenotic blood vessel segment, pressing the calibration button, obtaining the measured diameter of the stenotic blood vessel, storing it in the storage module and recording it as r3, and completing the measurement;

[0054] At this time, the storage module sends the values ​​of r1, r2, and r3 to the calculation module to calculate the stenosis rate of the stenotic blood vessel, and the calculation module sends the calculation results to the display screen for display; the storage module sends r1, r2, r3, r0, and fx to the blood vessel diameter calculation unit to calculate the actual diameter, and sends the calculation results to the display screen for display.

[0055] Beneficial effects: The essential progress of the present invention is to upgrade vascular measurement from a "software function module" to a "dedicated intelligent hardware system". Through the triple innovation of physical sensing (gauge angle) + dynamic calibration (catheter reference) + closed calculation chain (automatic output), it solves the industry problem that the existing software-dependent measurement methods cannot take into account both efficiency and universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 The image of a branch blood vessel in a cardiovascular interventional surgery shown in the present invention;

[0057] Figure 2 for Figure 1 Schematic diagram of the identification of each segment in the middle blood vessel image;

[0058] Figure 3 It is a structural schematic diagram of the measuring device in Example 1;

[0059] Figure 4 for Figure 3 a side sectional view of the middle mounting portion;

[0060] Figure 5Schematic connection diagram of the control system in Embodiment 1;

[0061] Figure 6 is Figure 3 enlarged schematic diagram at A1 in

[0062] Figure 7 is Figure 3 top view of the suction cup in

[0063] Figure 8 Schematic structural diagram of the measuring device in Embodiment 3;

[0064] Figure 9 Schematic connection diagram of the control part in Embodiment 3;

[0065] Figure 10 Schematic structural diagram of the measuring device in Embodiment 5;

[0066] Figure 11 Schematic structural diagram of the measuring device in Embodiment 6;

[0067] Figure 12 is Figure 11 enlarged schematic diagram at A2 in Detailed implementation manners

[0068] The following is a further detailed description through specific implementation manners:

[0069] The reference signs in the accompanying drawings of the specification include: mounting part 1, mounting space 10, power supply 11, avoidance groove 12, gauge angle 2, angle sensor 20, first gauge angle 21, suction cup 211, storage groove 212, marking line 2110, strip groove 2111, thumb groove 212, groove 213, elastic limiting member 2131, second gauge angle 22, laser indicator 221, wire groove 222, bump 223, controller 3, angle conversion module 31, storage module 32, calculation module 33, blood vessel diameter calculation unit 331, display screen 4, button module 5, switch button 51, calibration button 52, switching button 53, conversion button 54, flexible display screen 6.

[0070] Embodiment 1

[0071] A portable blood vessel measuring device, as Figure 3-4As shown in the figure, it includes a measuring instrument and a controller 3 and a display screen 4 arranged on the measuring instrument. The measuring instrument is similar to the shape of an existing compass, including two measuring tips 2 and a mounting part 1. Specifically, the mounting part 1 is arranged above the two measuring tips 2, and avoidance slots 12 are provided on both sides of the mounting part 1, so that the two measuring tips 2 can be unfolded up to 180° at most; a power supply 11 is arranged on the mounting part 1, and the controller 3 and the display screen 4 are also arranged on the mounting part 1 and are electrically connected to the power supply 11. Specifically, in this embodiment, the power supply 11 and the controller 3 are arranged in the installation space 10 of the mounting part 1, and the display screen 4 is arranged on the outer surface of the mounting part 1.

[0072] The tops of the two measuring tips 2 are connected by a rotating shaft, and an angle sensor 20 for detecting the opening angle of the measuring tips 2 is also arranged between the two measuring tips 2. The angle sensor 20 is electrically connected to the controller 3; specifically, the angle sensor 20 adopts a high-precision rotary encoder, is fixed at one end of the rotating shaft, rotates synchronously with the two measuring tips 2, and is connected to the controller 3 through a signal line; when the measuring tips 2 open, the rotating shaft drives the angle sensor 20 to rotate, and the opening angle θ is detected in real time.

[0073] As Figure 5 shown in the figure, the controller 3 includes an angle conversion module 31, a storage module 32, and a calculation module 33; specifically:

[0074] The angle conversion module 31 is used to convert the angle value of the opening of the two measuring tips 2 into the side length value corresponding to this angle according to the angle signal detected by the angle sensor 20 and the lengths of the two measuring tips 2 stored in advance. This side length value is the measured diameter of the contrast angiogram on the computer display screen 4. The angle conversion module 31 also sends the converted signal to the storage module 32, and the storage module 32 sends the stored signal to the calculation module 33 for calculation;

[0075] In this embodiment, the following formula is stored in the angle conversion module 31:

[0076]

[0077] where r is the measured diameter of the blood vessel (mm), L is the length of the measuring tip 2 (mm, fixed value), and θ is the opening angle of the measuring tip 2 (°); when the angle sensor 20 sends the opening angle of the measuring tip 2 to the angle conversion module 31, the angle conversion module 31 uses the above formula for calculation and outputs the measured diameter r of the blood vessel.

[0078] The calculation module 33 is used to calculate the stenosis rate of the stenotic blood vessel according to the received measured diameter r and the formula one stored in advance, and send the calculated stenosis rate to the display screen 4 for display. Specifically, the formula one is as follows:

[0079]

[0080] Among them, r1 is the measured diameter of the normal blood vessel at the proximal end of the stenotic blood vessel, r2 is the measured diameter of the normal blood vessel at the distal end of the stenotic blood vessel, and r3 is the measured diameter at the narrowest part of the stenotic blood vessel segment; specifically, as Figure 1-2 shows a blood vessel image segment, which labels the names of each segment to facilitate understanding of the positions of r1, r2, and r3 in this embodiment; among them, since the blood vessel is relatively complex and not a completely regular shape, the specific selection positions of each segment are judged by the doctor during actual measurement.

[0081] More preferably, as Figure 3 、 5 shown, a button module 5 is further provided on the installation part 1 in this embodiment. The button module 5 includes a calibration button 52 and a switch button 51. The switch button 51 is connected to the power supply 11 and is used to control the conduction and disconnection of the power supply 11, serving as the main switch of the entire device; the calibration button 52 is electrically connected to the controller 3 and is used to send a recording instruction to the controller 3, that is, when the calibration button 52 is pressed, the controller 3 records the signal sent by the angle sensor 20 once and sends the signal to the angle conversion module 31. At this time, the angle conversion module 31 converts the angle signal into a measured diameter and sends the converted signal to the storage module 32 and the calculation module 33.

[0082] Because when actually moving the two gauge angles 2 so that their tips are located on both sides of the boundary of the blood vessel image, precise adjustment is required; after setting the calibration button 52, only when the doctor confirms that the tips of the gauge angles 2 are accurately aligned with both sides of the boundary of the blood vessel image and presses the calibration button 52, the controller 3 will record the signal sent by the angle sensor 20, thus ensuring that each measurement is triggered in the state that the doctor deems the most accurate, avoiding measurement errors caused by unexpected signal recording, greatly improving the accuracy of the measurement operation, and enabling the measurement result to more truly reflect the actual size of the blood vessel.

[0083] As Figure 6 shown, the gauge angle 2 includes a first gauge angle 21 and a second gauge angle 22. A suction cup 211 is provided at the tip of the first gauge angle 21, and the center of the tip is consistent with the center of the suction cup 211; specifically, the suction cup 211 is movably connected to the tip of the first gauge angle 21, so that the suction cup 211 can flip around the tip of the first gauge angle 21, for example, by using a ball hinge connection method. As Figure 7As shown, several marking lines 2110 passing through the center of the suction cup 211 are provided on the surface of the suction cup 211. During use, it is convenient to quickly select a suitable marking line 2110 according to the boundary direction of the blood vessel image for correspondence; a strip-shaped groove 2111 is also provided on the suction cup 211 along the diameter direction of the suction cup 211, and the strip-shaped groove 2111 is used for avoiding position and accommodating when the second gauge angle 22 closes. It should be noted that the first gauge angle 21 and the second gauge angle 22 described in this embodiment are for the convenience of description and do not specifically refer to a particular side of the gauge angle 2.

[0084] Among them, the suction cup 211 in this embodiment can adopt an existing transparent silicone suction cup. When the suction cup 211 is pressed against the computer screen, a certain adsorption positioning can be achieved, thereby preventing the tip of the gauge angle 2 from sliding on the screen; and several marking lines 2110 passing through the center on the surface of the suction cup 211 provide a clear and intuitive positioning reference for the doctor, facilitating the doctor to quickly identify the boundary for positioning; while the strip-shaped groove 2111 plays a role in avoiding position and accommodating and protecting the second gauge angle 22, which can prevent the risk of damage to the gauge angle 2 caused by accidental collision.

[0085] As Figure 3 shown, a laser indicator 221 is also provided on the second gauge angle 22. Specifically, an installation groove and a wire groove 222 can be provided inside the second gauge angle 22. The laser indicator 221 is arranged in the installation groove, and the emission point of the laser indicator 221 is located at the tip of the second gauge angle 22. The laser indicator 221 is electrically connected to the controller 3 through a signal wire, and the signal wire passes through the wire groove 222; specifically, the laser indicator 221 is a laser diode; when the angle sensor 20 first detects that the two gauge angles 2 are opened, a signal is sent to the controller 3, and after receiving the signal, the controller 3 controls the laser indicator 221 to turn on.

[0086] Specifically, when the angle sensor 20 first detects that the two gauge angles 2 are opened, it means that the angle sensor 20 detects that the angle between the two gauge angles 2 starts to increase from zero. At this time, the controller 3 controls the laser indicator 221 to turn on; when it is no longer in use and the two gauge angles 2 are closed, and the angle detected by the angle sensor 20 is 0, or within the range of 0 - 2°, after the controller 3 receives the signal, it controls the laser indicator 221 to turn off.

[0087] If the laser indicator 221 is still on when the two gauge corners 2 are closed, it indicates that the two gauge corners 2 are not fully closed. At this time, the second gauge corner 22 may not be received into the suction cup 211, and the tip of the second gauge corner 22 is exposed, which may cause injury or accidental injury to others. At this time, the laser indicator 221 being on can also serve as a reminder to the user, prompting the user to manually close the two gauge corners 2 again until the laser indicator 221 goes out. That is, the laser indicator 221 can be used to indicate to the doctor to quickly position and align the second gauge corner 22 at the blood vessel boundary when the gauge corner 2 is opened for use. When the gauge corner 2 is closed, it can also be used to prompt whether the gauge corner 2 is fully closed to an angle of zero, so as to ensure that the second gauge corner 22 is retracted into the strip groove 2111 of the suction cup 211.

[0088] By setting the emission point of the laser indicator 221 at the tip of the second gauge corner 22, the doctor can use this beam of laser to more accurately align the tip of the second gauge corner 22 with the blood vessel boundary. Compared with simply relying on visual observation, the positioning accuracy is greatly improved; especially in the case where the details of the blood vessel image are complex and the boundary is blurred, the clear indication provided by the laser indicator 221 ensures the accuracy of the measurement point, laying a solid foundation for the subsequent angle sensor 20 to obtain accurate angle data and the angle conversion module 31 to calculate the accurate measurement diameter.

[0089] In addition, when the angle sensor 20 detects that the gauge corner 2 is in the open state, it triggers the controller 3 to turn on the laser indicator 221. The whole process has a high degree of automation and does not require an additional start switch. This collaborative mechanism improves the functional system of the measuring device and makes it more practical in clinical applications; whether it is in daily diagnosis, real-time measurement during surgery, or in scenarios such as consultations and training, the laser indicator 221 can provide efficient and accurate measurement assistance to doctors, enhancing the applicability and practicality of the measuring instrument in different medical scenarios and better meeting the needs of medical workers for convenient, efficient, and accurate measurement.

[0090] During use, first magnify the image of the angiographic segment to be measured on the computer display screen by a certain multiple, then open the gauge corner 2, and adsorb and position the suction cup 211 on the tip of the first gauge corner 21 on one boundary of the blood vessel image. At this time, any one of the marking lines 2110 on the suction cup 211 coincides with the blood vessel image boundary; then adjust the second gauge corner 22 so that the tip of the second gauge corner 22 is positioned on the second boundary of the blood vessel image. During this process, the laser at the tip of the second gauge corner 22 plays a strong guiding and indicating role, which is conducive to the doctor's faster positioning; after the positions of the two gauge corners 2 are determined, press the calibration button 52. At this time, the controller 3 receives the signal sent by the angle sensor 20 and records this signal, and uses the angle conversion module 31 for conversion.

[0091] Specifically, select three groups of data for measurement, such asFigure 2 As shown in the figure, they are respectively the measured diameter r1 of the normal blood vessel at the proximal end of the narrow blood vessel, the measured diameter r2 of the normal blood vessel at the distal end of the narrow blood vessel, and the measured diameter r3 at the narrowest part of the narrow blood vessel segment; when the calculation module 33 receives the last set of measurement data, it starts to calculate the stenosis rate and sends the calculation result to the display screen 4 for display; that is, after the third measurement is completed, the stenosis rate of the narrow blood vessel can be immediately seen on the display screen 4.

[0092] Embodiment 2

[0093] The difference between this embodiment and Embodiment 1 is that a sensor (not shown in the figure) is further provided in the strip-shaped groove 2111. The sensor is electrically connected to the controller 3. When the sensor detects that the first gauge angle 21 is closed, it sends a signal to the controller 3, and the controller 3 controls the laser indicator 221 to turn off, otherwise it controls the laser indicator 221 to turn on.

[0094] During use, when the doctor closes the first gauge angle 21 and places it in the strip-shaped groove 2111, the sensor immediately captures this action and quickly sends a signal to the controller 3. The controller 3 then precisely controls the laser indicator 221 to turn off; conversely, as long as the first gauge angle 21 is in the open state, the laser indicator 221 remains on; this intelligent control logic enables the laser indicator 221 to work only during actual measurement, avoiding unnecessary activation, reducing energy consumption, increasing service life, reducing operation steps, and improving the overall smoothness and convenience of the operation.

[0095] Embodiment 3

[0096] The difference between this embodiment and Embodiments 1 and 2 is that, as Figure 8 shown, a switching button 53 is further provided on the installation part 1. The switching button 53 is electrically connected to the controller 3 and is used to send a switching instruction to the controller 3; various standard catheter models and the diameters of the corresponding standard catheters are pre-stored in the controller 3. The switching button 53 is used to select the standard catheter type and display the selected standard catheter model and diameter on the display screen 4. Specifically, different models of catheters will be selected according to specific circumstances for different parts and types of interventional surgeries. For example, catheters of 4F to 6F are usually used for coronary angiography and interventional treatment; catheters of 4F to 7F are usually used for cerebrovascular angiography and interventional treatment; catheters of 2F to 10F are usually used for peripheral vascular angiography and interventional treatment.

[0097] As Figure 9 shown, in this embodiment, the calculation module 33 further includes a blood vessel diameter calculation unit 331, which is used to calculate the actual diameter of the blood vessel according to the preset formula two. For the sake of distinction, the actual diameter is represented by R (1、2、3) ; The formula two is as follows:

[0098]

[0099] where r (1、2、3) is the measured diameter obtained after conversion by the angle conversion module 31, r0 is the magnified measured diameter obtained from the first measurement of the standard catheter, and fx is the actual diameter corresponding to a certain type of standard catheter, including f4, f5, and f6; in this embodiment, f4, f5, and f6 shown respectively refer to standard catheters of 4F, 5F, and 6F. Since 1F is equal to 0.333 mm, the diameter of the 4F catheter is approximately 1.33 mm, the diameter of the 5F catheter is approximately 1.67 mm, and the diameter of the 6F catheter is approximately 2.00 mm.

[0100] In blood vessel measurement, due to factors such as the display ratio of the computer screen, the directly measured blood vessel diameter is not its actual size. In this embodiment, calibration is performed by introducing the measurement data of the standard catheter. First, the magnified measured diameter r0 is obtained by measuring the standard catheter. Combining the known actual diameter fx of this standard catheter, the magnification ratio of the screen display can be accurately calculated. On this basis, substituting the blood vessel measurement diameter r (1、2、3) obtained by the angle conversion module 31 into Formula 2 can output the actual diameter R (1、2、3) .

[0101] This calculation method based on the calibration of the standard catheter effectively eliminates the interference of the screen display factor on the measurement result; during actual measurement, no matter how many times the blood vessel image is magnified, the actual diameter of the blood vessel can be directly displayed on the display screen 4, which helps doctors to more accurately select the devices suitable for implantation into the blood vessel subsequently.

[0102] Among them, in this embodiment, two groups or four groups of data can be displayed on the display screen 4, specifically: the stenosis rate of the stenotic blood vessel, the actual diameter R3 of the narrowest segment of the stenotic blood vessel, or two groups of data of the actual diameters R1 and R2 of the normal blood vessels at the proximal and distal ends of the stenotic blood vessel can be added on this basis according to needs.

[0103] Embodiment 4

[0104] This embodiment also provides a portable blood vessel measurement method, using a portable blood vessel measurement device disclosed in Embodiment 3 as a measurement tool, which specifically includes the following steps:

[0105] S1. Magnify the image of the angiographic segment of the blood vessel to be measured on the computer display screen by a certain multiple;

[0106] S2. Press the switch button 51 on the measuring instrument to start, then press the switching button 53 to select the model of the standard catheter currently inserted into the blood vessel. After selection and confirmation, send the corresponding actual diameter to the storage module 32, and it is recorded as f4, f5, or f6 in the storage module 32;

[0107] S3, open the two gauge angles 2 of the measuring instrument, so that the tips of the two gauge angles 2 are respectively located at the two side boundaries of the standard catheter on the image, and then press the calibration button 52, at this time, the controller 3 records the angle signal sent by the current angle sensor 20; and converts the angle signal into the measured diameter of the standard catheter through the angle conversion module 31, and the storage module 32 stores it and records it as r0;

[0108] S4, move the measuring instrument to the two sides of the normal blood vessels proximal to the stenotic blood vessel segment, determine the position, and press the calibration button 52 to obtain the measured diameter of the proximal normal blood vessel, which is stored in the storage module 32 and recorded as r1;

[0109] S5, moving the measuring instrument to the two sides of the normal blood vessels distal to the stenotic blood vessel segment, pressing the calibration button 52, obtaining the measured diameter of the distal normal blood vessel, and storing it in the storage module 32 as r2;

[0110] S6, move the measuring instrument to the two sides of the narrowest part of the stenotic blood vessel segment, press the calibration button 52, obtain the measured diameter of the stenotic blood vessel, store it in the storage module 32, record it as r3, and complete the measurement;

[0111] At this time, the storage module 32 sends the values ​​of r1, r2, and r3 to the calculation module 33 to calculate the stenosis rate of the stenotic blood vessel, and the calculation module 33 sends the calculation result to the display screen 4 for display; the storage module 32 sends r1, r2, r3, r0, and fx to the blood vessel diameter calculation unit 331 to calculate the actual diameter R (1、2、3) The calculation result is sent to the display screen 4 for display.

[0112] The essential progress of the present invention lies in upgrading vascular measurement from a "software function module" to a "dedicated intelligent hardware system". Through the triple innovation of physical sensing (2 angles of gauge angle) + dynamic calibration (catheter reference) + closed calculation chain (automatic output), it solves the industry problem that the existing software-dependent measurement methods cannot take into account both efficiency and universality.

[0113] Embodiment 5

[0114] The difference between this embodiment and the third embodiment is that Figure 10As shown, a flexible display screen 6 is further provided between the first angle gauge 21 and the second angle gauge 22. The flexible display screen 6 is electrically connected to the controller 3. The flexible display screen 6 has two straight edges and at least one arc edge, and the two straight edges of the flexible display screen 6 are respectively connected to the first angle gauge 21 and the second angle gauge 22. Specifically, in this embodiment, a storage groove 212 is provided on one side of the first angle gauge 21 close to the second angle gauge 22. When the two angle gauges 2 are closed, the flexible display screen 6 is stored in the storage groove 212 of the first angle gauge 21. When in use, after the controller 3 receives the signal from the angle sensor 20, it is used to control the flexible display screen 6 to uniformly display scale lines along the arc edge, and the scale lines are protractor scale lines.

[0115] Specifically, in this embodiment, a conversion button 54 is further provided on the mounting portion 1. When it is necessary to use the measuring instrument as a protractor, press the conversion button 54 to turn on the flexible display screen 6. At this time, the controller 3 will send the signal received from the angle sensor 20 to the flexible display screen 6, and the flexible display screen 6 uniformly displays scale lines along the arc edge. More preferably, in addition to displaying scale lines, the flexible display screen 6 can also directly display the current angle value.

[0116] The addition of the flexible display screen 6 enriches the function system of the measuring instrument. Originally, the measuring instrument mainly focused on the measurement and calculation of blood vessel diameter and stenosis rate. Now, by displaying protractor scale lines on the flexible display screen 6, the angle measurement and display function are added. This enables the measuring instrument to be used not only for blood vessel measurement, but also in some other medical scenarios or related experiments that require angle measurement. For example, in an experiment studying the relationship between blood vessel bending angle and disease, doctors can directly obtain angle data using this measuring instrument. The expansion of this function improves the application range and practicality of the device, making it a more versatile medical auxiliary tool and providing convenience for medical workers in different fields.

[0117] Embodiment Six

[0118] The difference between this embodiment and Embodiment One is that, as Figure 11-12 shown, the switch button 51 and the calibration button 52 are both provided on the first angle gauge 21. A wire groove 222 is further provided on the first angle gauge 21. The wires of the switch button 51 and the calibration button 52 are electrically connected to the power supply 11 and the controller 3 of the mounting portion 1 through the wire groove 222. Specifically, a thumb groove 212 for easy gripping is further provided on the first angle gauge 21, and the calibration button 52 is provided above the thumb groove 212, which is convenient for pressing the calibration button 52 with the thumb after positioning.

[0119] The switch button 51 is arranged on the side wall of the first corner 21 close to the second corner 22. Specifically, a groove 213 is arranged on the side wall of the first corner 21, the switch button 51 is arranged in the groove 213, and a convex block 223 is arranged on the corresponding side wall of the second corner 22. The convex block 223 is used to insert into the groove 213 and trigger the switch button 51 to turn off the power circuit. That is, when the convex block 223 is taken out of the groove 213, the switch button 51 turns on the power circuit, and when the convex block 223 extends into the groove 213 to trigger the switch button 51, the switch button 51 turns off the power circuit.

[0120] Preferably, an elastic limiting member 2131 is further arranged on the side wall of the groove 213, such as rubber or silica gel. The elastic limiting member 2131 plays a certain limiting and fixing role on the convex block 223, ensuring that when the convex block 223 is inserted into the groove 213, it can stably contact and trigger the switch button 51. Further, when the two corners 2 are closed, the switch button 51 automatically turns off the power circuit, and when the corners 2 are opened, the power circuit is turned on.

[0121] The above are only embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners and the like described in the specification can be used to explain the content of the claims.

Claims

1. A portable blood vessel measuring device, characterized in that: The invention comprises a measuring instrument and a controller and a display screen arranged on the measuring instrument. The measuring instrument comprises two angle gauges and a mounting portion. A power supply is arranged on the mounting portion. The controller and the display screen are also arranged on the mounting portion and are electrically connected to the power supply. The tops of the two angle gauges are connected by a rotating shaft. An angle sensor for detecting the opening angle of the angle gauge is also arranged between the two angle gauges. The angle sensor is electrically connected to the controller. The controller comprises an angle conversion module, a storage module and a calculation module. The angle conversion module is used to convert the angle value of the two gauge angles into the side length value corresponding to the angle according to the angle signal detected by the angle sensor and the length of the two gauge angles stored in advance. The side length value is the measured diameter of the angiographic blood vessel on the computer display screen. The angle conversion module also sends the converted signal to the storage module, and the storage module sends the stored signal to the calculation module; The calculation module is used to calculate the stenosis rate of the stenotic blood vessel according to the pre-stored formula 1, and send the calculated stenosis rate to the display screen for display. The formula 1 is as follows: Among them, r1 is the measured diameter of the normal blood vessel proximal to the stenotic blood vessel, r2 is the measured diameter of the normal blood vessel distal to the stenotic blood vessel, and r3 is the measured diameter of the narrowest part of the stenotic blood vessel segment.

2. A portable blood vessel measuring device according to claim 1, characterized in that: A key module is also provided on the mounting portion, and the key module includes a calibration button and a switch button. The calibration button is electrically connected to the controller. When the calibration button is pressed, the controller records the signal sent by the angle sensor once. At this time, the angle conversion module converts the angle signal into a measured diameter and sends the converted signal to the storage module and the calculation module.

3. A portable blood vessel measuring device according to claim 2, characterized in that: The guide angle includes a first guide angle and a second guide angle. The tip of the first guide angle is provided with a suction cup, and the center of the tip is consistent with the center of the suction cup. The surface of the suction cup is provided with a plurality of marking lines passing through the center of the suction cup.

4. A portable blood vessel measuring device according to claim 3, characterized in that: The suction cup is also provided with a strip groove arranged along the diameter direction of the suction cup, and the strip groove is used for avoiding and storing the second angle when the second angle is closed.

5. A portable blood vessel measuring device according to claim 4, characterized in that: A laser pointer is also provided on the second angle, wherein the emission point of the laser pointer is located at the tip of the second angle, and the laser pointer is electrically connected to the controller; when the angle sensor detects that the two angles are open, a signal is sent to the controller, and the controller controls the laser pointer to turn on.

6. The portable blood vessel measuring device according to claim 5, characterized in that: A sensor is also provided in the strip groove, and the sensor is electrically connected to the controller. When the sensor detects that the first angle of the first compass is closed, a signal is sent to the controller, and the controller controls the laser indicator to be turned off, otherwise, the controller controls the laser indicator to be turned on.

7. A portable blood vessel measuring device according to any one of claims 1 to 6, characterized in that: The mounting portion is also provided with a switch button, which is electrically connected to the controller. The controller pre-stores a variety of standard catheter models and corresponding standard catheter diameters. The switch button is used to select the standard catheter type and display the selected standard catheter model and diameter on the display screen.

8. The portable blood vessel measuring device according to claim 7, characterized in that: The calculation module further includes a blood vessel diameter calculation unit, which is used to calculate the actual diameter of the blood vessel according to a preset formula 2, and the formula 2 is as follows: Among them, r (1、2、3) is the measured diameter converted by the angle conversion module, r0 is the enlarged measured diameter obtained by the first measurement of the standard catheter, and fx is the actual diameter corresponding to a certain type of standard catheter, including f4, f5, and f6.

9. The portable blood vessel measuring device according to claim 8, characterized in that: A flexible display screen is also arranged between the first compass angle and the second compass angle. The flexible display screen is electrically connected to the controller. The flexible display screen has two straight edges and at least one curved edge, and the two straight edges of the flexible display screen are respectively connected to the first compass angle and the second compass angle. After receiving the signal from the angle sensor, the controller is used to control the flexible display screen to evenly display scale lines along the curved edges, and the scale lines are protractor scale lines.

10. A portable blood vessel measuring method, using a portable blood vessel measuring device as disclosed in claim 9 as a measuring tool, characterized in that: The steps include: S1. Enlarging the image of the angiographic segment to be tested on the computer screen by a certain multiple; S2. Press the switch button on the measuring instrument to start, then press the switch button to select the model of the standard catheter currently inserted into the blood vessel. After confirmation, the corresponding actual diameter is sent to the storage module, and is recorded as f4, f5 or f6 in the storage module; S3, open the two gauge angles of the measuring instrument, so that the tips of the two gauge angles are located at the two side boundaries of the standard catheter on the image, and then press the calibration button. At this time, the controller records the angle signal sent by the current angle sensor; and converts the angle signal into the measured diameter of the standard catheter through the angle conversion module, and the storage module stores it and records it as r0; S4, moving the measuring instrument to the two sides of the normal blood vessels proximal to the stenotic blood vessel segment, and after determining the position, pressing the calibration button to obtain the measured diameter of the proximal normal blood vessel, and storing it in the storage module as r1; S5, moving the measuring instrument to the two sides of the normal blood vessels distal to the stenotic blood vessel segment, pressing the calibration button, obtaining the measured diameter of the distal normal blood vessel, and storing it in the storage module as r2; S6, moving the measuring instrument to the two sides of the narrowest part of the stenotic blood vessel segment, pressing the calibration button, obtaining the measured diameter of the stenotic blood vessel, storing it in the storage module and recording it as r3, and completing the measurement; At this time, the storage module sends the values ​​of r1, r2, and r3 to the calculation module to calculate the stenosis rate of the stenotic blood vessel, and the calculation module sends the calculation results to the display screen for display; the storage module sends r1, r2, r3, r0, and fx to the blood vessel diameter calculation unit to calculate the actual diameter, and sends the calculation results to the display screen for display.

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