A portable vascular measurement device and measurement method

Abstract

This invention relates to the field of vascular measurement technology, and discloses a portable vascular measurement device and method. The device includes a measuring instrument and a controller and display screen mounted on the measuring instrument. The measuring instrument includes two gauges and a mounting part. A power supply is located on the mounting part, and the controller and display screen are also mounted on the mounting part and electrically connected to the power supply. The tops of the two gauges are connected by a rotating shaft. An angle sensor for detecting the opening angle of the gauges is also located between the two gauges. The angle sensor is electrically connected to the controller, which includes an angle conversion module, a storage module, and a calculation module. The essential advancement of this invention lies in upgrading vascular measurement from a "software functional module" to a "dedicated intelligent hardware system." Through a triple innovation of physical sensing + dynamic calibration + closed computing chain, it solves the industry problem that existing software-based measurement methods cannot simultaneously achieve both efficiency and universality.

Description

Technical Field

[0001] This invention relates to the field of vascular measurement technology, specifically to a portable vascular measurement device and measurement method. Background Technology

[0002] Interventional surgery, as a core method for minimally invasive treatment of cardiovascular diseases, relies on angiography to obtain real-time imaging data of the patient's vascular system. By injecting contrast agents into the blood vessels and combining this with X-ray or digital subtraction angiography (DSA) techniques, doctors can clearly observe the morphological characteristics of the blood vessels on a computer screen, including their course, lumen diameter, and the location of stenosis. Angiography is not only the gold standard for diagnosing vascular diseases but also a crucial basis for guiding treatment procedures such as stent implantation and balloon angioplasty.

[0003] In interventional procedures, accurately quantifying the degree of vascular stenosis directly impacts the choice of treatment plan and prognosis. For example, measuring the diameter of the stenotic vessel determines the suitability of the stent size, and a stenosis rate (the ratio of the diameter at the stenosis site to the normal vessel diameter) exceeding 70% usually requires emergency intervention. Furthermore, the assessment of restenosis risk and the selection of drug-eluting balloons all rely on precise analysis of vascular geometry parameters. Therefore, rapidly and accurately obtaining vascular size data has become a core technical challenge for improving surgical safety and efficacy.

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

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

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

[0007] (3) Edge detection method: Some advanced software can automatically identify changes in the grayscale of the blood vessel wall and generate the blood vessel outline. Doctors need to manually adjust the position of the outline to correct the error and finally output the diameter data.

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

[0009] 1. Cumbersome operation process leads to low efficiency: When using it, doctors need to switch software tools on the computer and manually mark the blood vessel boundaries. The operation chain is lengthy (e.g., open the software → select the measurement tool → click multiple times → calculate the stenosis rate). The many operation steps reduce the efficiency of measurement.

[0010] 2. Stringent requirements for device sensitivity and other performance characteristics: When using a mouse to measure blood vessels, such as aligning the ruler line with the edge of the blood vessel by dragging it in the auxiliary ruler method, or manually adjusting the contour line position to correct errors in the edge detection method, the sensitivity of the mouse is required to be extremely high. However, the actual clinical environment is complex and variable, and the mouse may age, freeze, delay, or have poor contact due to prolonged use. This will force doctors to click repeatedly during measurement, increasing workload and operational errors.

[0011] 3. Software and hardware dependencies limit application scenario expansion: Existing measurement technologies heavily rely on dedicated medical imaging workstations and supporting software and hardware. For example, in scenarios such as inter-hospital consultations and operating room teaching demonstrations, the meeting venue may not be equipped with the necessary professional software and computers, preventing doctors from quickly performing measurements. Even with complete equipment, the software startup, loading, and complex measurement operation procedures are difficult to meet the needs of rapid on-site measurement and analysis. Furthermore, display devices such as tablets and projection screens lack compatible measurement tools, making it difficult to support real-time interactive analysis in remote consultations, thus limiting the technology's universality. Summary of the Invention

[0012] The present invention aims to provide a portable vascular measurement device and measurement method to solve the technical problems of cumbersome operation procedures and high sensitivity and dependence on equipment in existing measurement methods.

[0013] To achieve the above objectives, the present invention adopts the following technical solution:

[0014] A portable blood vessel measuring device includes a measuring instrument and a controller and a display screen mounted on the measuring instrument. The measuring instrument includes two gauges and a mounting part. A power supply is provided on the mounting part. The controller and display screen are also mounted on the mounting part and electrically connected to the power supply. The tops of the two gauges are connected by a pivot. An angle sensor for detecting the opening angle of the gauges is also provided between the two gauges. The angle sensor is electrically connected to the controller. The controller includes an angle conversion module, a storage module, and a calculation module.

[0015] 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 based on 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 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 calculates the stenosis rate of the narrowed blood vessel according to the pre-stored Formula 1, and sends the calculated stenosis rate to the display screen for display. Formula 1 is as follows:

[0017]

[0018] Where r1 is the measured diameter of the normal blood vessel proximal to the stenotic vessel, r2 is the measured diameter of the normal blood vessel distal to the stenotic vessel, and r3 is the measured diameter of the narrowest part of the stenotic vessel segment.

[0019] Technical principle: When in use, the two gauge angles are opened so that the tips of the gauge angles are aligned with the two sides of the vascular 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 a measurement diameter. Then, the calculation module calculates the stenosis rate of the narrowed blood vessel and displays it on the display screen. In other words, doctors only need to open the vascular image on the computer and magnify it a certain number of times to use the measuring instrument to directly measure the vascular image on the computer screen and view the measurement results directly on the display screen.

[0020] Beneficial effects:

[0021] 1. Significantly simplified operation process and improved measurement efficiency: Traditional marking measurement methods require doctors to accurately click on different locations multiple times on the angiography image, which is cumbersome and prone to errors. In contrast, the portable vascular measurement device of this invention only requires the doctor to open two angle gauges and align their tips with the two boundaries of the vascular image. The measuring instrument automatically completes the entire process from angle detection and diameter conversion to stenosis rate calculation and result display. This eliminates the need for tedious clicking operations in complex medical imaging software and the need to wait for multiple calculations by the software system. Measurement time is reduced from 30 seconds to 1 minute to approximately 10 seconds, significantly improving the convenience and efficiency of vascular measurement operations.

[0022] 2. Significantly Reduced Dependence on Equipment: Existing mouse-based vascular measurement methods require extremely high mouse sensitivity. If the mouse ages or develops poor contact, it severely impacts measurement efficiency and accuracy. The measuring instrument of this invention is completely independent of devices such as computer mice. Its internal angle sensor, controller, and other core components work collaboratively, unaffected by fluctuations in external device performance. As long as the measuring instrument's power supply is normal and all modules are functioning properly, it can perform stable, accurate, and rapid vascular measurements. This makes the measurement process more reliable, ensuring efficient vascular measurement in various clinical environments and avoiding measurement obstruction or increased errors caused by external device problems.

[0023] 3. Significantly enhances applicability and flexibility in specific scenarios: In consultation, training, and other conference settings, traditional measurement methods based on specialized medical imaging software and compatible computer equipment often fail to meet the needs of rapid on-site measurement and analysis due to insufficient equipment, compatibility issues, or time-consuming software startup and loading. The measuring instrument of this invention has a simple structure and is easy to carry. Doctors do not need to rely on perfect compatibility with specific software and computer equipment; they only need to open the vascular image on the computer and zoom in at an appropriate magnification to take out the measuring instrument at any time and quickly obtain diameter and stenosis rate data on the display screen. This greatly facilitates vascular measurement and analysis on-site, effectively supports the timeliness of consultation discussions and training effectiveness, and significantly improves the practicality and convenience of vascular measurement in various specific scenarios.

[0024] 4. Reduced Medical Costs: Traditional vascular measurement methods require specialized medical imaging software, which is typically expensive and requires regular updates and maintenance, increasing hospitals' equipment procurement and maintenance costs. This technical solution uses a standalone portable measuring device, eliminating the need for costly software and reducing equipment procurement costs. Furthermore, its ease of operation reduces doctors' measurement time, indirectly improving the efficiency of medical resource utilization. In the long run, this helps reduce overall medical costs and improve the cost-effectiveness of medical services.

[0025] Preferably, as an improvement, the mounting section is also equipped with a button module, which includes a calibration button and a power 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.

[0026] Beneficial effects: In actual vascular imaging measurements, doctors may accidentally trigger the angle sensor to send signals prematurely or unnecessarily during the adjustment of the gauge angle position due to accidental contact or other reasons. The newly added calibration button effectively solves this problem. That is, the controller will only record the signal sent by the angle sensor when the doctor confirms that the gauge angle tip is accurately aligned with the two boundaries of the vascular image and presses the calibration button. This design ensures that each measurement is triggered in the state that the doctor considers most accurate, avoiding measurement errors caused by unexpected signal recording, greatly improving the accuracy of the measurement operation, and enabling the measurement results to more realistically reflect the actual size of the blood vessel.

[0027] Preferably, as an improvement, 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 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 attached and positioned on the computer screen to prevent the gauge angle from moving accidentally during the measurement process. This stability allows the angle sensor to continuously and stably detect the opening angle of the gauge angle, avoiding fluctuations in angle data caused by gauge angle shaking, and ensuring the stability and reliability of the measurement process.

[0030] 2. Several marking lines passing through the center of the suction cup surface provide doctors with a clear and intuitive positioning reference. On the one hand, it makes it easier for doctors to quickly identify the boundary for positioning; on the other hand, when doctors align the marking lines with the boundary of the blood vessel image, they can accurately determine the position of the tip of the gauge at the blood vessel boundary, thereby improving the accuracy of the measurement starting point.

[0031] Preferably, as an improvement, the suction cup is also provided with a strip groove arranged along the diameter of the suction cup. The strip groove is used to avoid and accommodate the second gauge when it is closed.

[0032] Beneficial effects: In daily use, if the gauge corner is placed randomly, it is easily deformed due to collision or squeezing; the existence of the groove provides a dedicated storage place for the second gauge corner. During storage and carrying, the second gauge corner is safely placed in the groove and isolated from other items, reducing the risk of damage to the gauge corner due to accidental collision; it helps to extend the service life of the gauge corner, ensures that the measuring instrument maintains high-precision measurement performance for a long time, and reduces equipment maintenance and replacement costs.

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

[0034] Beneficial effects:

[0035] 1. When measuring vascular images, accurately determining the position of the tip of the second angle is crucial. By setting the laser pointer's emission point at the tip of the second angle, doctors can use this laser beam to more precisely align the tip of the second angle with the vascular boundary, greatly improving the accuracy of positioning compared to simply relying on visual observation. Especially when the vascular image details are complex and the boundaries are blurred, the clear indication provided by the laser pointer 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 precise 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 whole process is highly automated and does not require an additional start switch. This collaborative mechanism improves the functional system of the measuring device, making it more practical in clinical applications. Whether in daily diagnosis, real-time measurement during surgery, or in consultation and training scenarios, the laser indicator can provide doctors with efficient and accurate measurement assistance, 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 also provided in the strip groove. The sensor is electrically connected to the controller. When the sensor detects that the first guide angle is closed, it sends a signal to the controller, which then 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 guide angle and inserts it into the strip groove, the sensor immediately captures this action and quickly sends a signal to the controller, which then precisely controls the laser indicator to turn off; conversely, as long as the first guide angle is open, the laser indicator remains on. This intelligent control logic ensures that the laser indicator only operates when actually needed for measurement, avoiding unnecessary activation, reducing energy consumption, extending service life, and reducing operational steps, thus improving the overall smoothness and convenience of the operation.

[0039] Preferably, as an improvement, the installation unit is also equipped with a switching button, which is electrically connected to the controller. The controller has a variety of standard catheter models and corresponding standard catheter diameters pre-stored in it. The switching button is used to select the standard catheter type and displays the selected standard catheter model and diameter on the display screen.

[0040] Beneficial effects: Before obtaining vascular images, a standard catheter needs to be inserted 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 of the vascular image by measuring the diameter of the standard catheter and the actual diameter, thereby calculating the actual diameter of the narrowed 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 a pre-set formula two, as follows:

[0042]

[0043] Where, r (1、2、3) The measured diameter is obtained after conversion by the angle conversion module. r0 is the magnified measured diameter obtained from the first measurement of the standard catheter. 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 scale of the computer screen, the directly measured vascular diameter is not its actual size. This application uses standard catheter measurement data for calibration. First, the magnified measurement diameter r0 is obtained by measuring the standard catheter. Combined with the known actual diameter fx of the standard catheter, the magnification ratio displayed on the screen can be accurately calculated. Based on this, the vascular measurement diameter r obtained by the angle conversion module is... (1、2、3) Substituting the values ​​into the formula yields the actual diameter of the blood vessel. This calculation method, based on standard catheter calibration, effectively eliminates the interference of screen display factors on the measurement results. During actual measurement, regardless of how many times the vascular image is magnified, the actual diameter of the blood vessel can be directly displayed on the screen, thus helping doctors to more accurately select appropriately sized implantable devices for the blood vessel.

[0045] Preferably, as an improvement, a flexible display screen is also provided between the first and second protractor angles. The flexible display screen is electrically connected to the controller. The flexible display screen has two straight edges and at least one arc-shaped edge, and the two straight edges of the flexible display screen are respectively connected to the first and second protractor angles. 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-shaped edge. The scale lines are protractor scale lines.

[0046] Beneficial Effects: The addition of a flexible display screen enriches the functionality of the measuring instrument. Originally focused on measuring and calculating blood vessel diameter and stenosis rate, the flexible display now shows protractor scale lines, adding angle measurement and display capabilities. This allows the instrument to be used not only for blood vessel measurement but also in other medical scenarios or related experiments requiring angle measurement. For example, in experiments studying the relationship between blood vessel curvature and disease, doctors can directly obtain angle data using this instrument. This functional expansion enhances the device's application scope and practicality, making it a more versatile medical aid and providing convenience for medical professionals in various fields.

[0047] A portable vascular measurement method, using a portable vascular measurement device as the measuring tool, includes the following steps:

[0048] S1. Magnify the image of the angiographic segment to be tested on the computer screen by a certain factor;

[0049] S2. Press the switch button on the pressure measuring instrument to start it, then press the switch button to select the model of the standard catheter currently inserted into the blood vessel. After confirming the selection, the corresponding actual diameter will be sent to the storage module and recorded as f4, f5 or f6 in the storage module.

[0050] S3. Open the two gauges of the measuring instrument so that the tips of the two gauges are located on the two sides of the standard guide tube on the image. Then press the calibration button. At this time, the controller records the angle signal sent by the current angle sensor. The angle conversion module converts the angle signal into the measurement diameter of the standard guide tube, stores it in the storage module, and records it as r0.

[0051] S4. Move the measuring instrument to both sides of the proximal normal blood vessel of the narrowed blood vessel segment. After determining the position, press the calibration button to obtain the measured diameter of the proximal normal blood vessel. The storage module stores it and records it as r1.

[0052] S5. Move the measuring instrument to the two sides of the normal blood vessel at the distal end of the narrow blood vessel segment, press the calibration button, obtain the measured diameter of the distal normal blood vessel, store it in the storage module, and record it as r2.

[0053] S6. Move the measuring instrument to the two sides of the narrowest part of the stenotic blood vessel segment, press the calibration button to obtain the measured diameter of the stenotic blood vessel, store it in the storage module, record it as r3, and complete 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 narrowed blood vessel, and the calculation module sends the calculation result 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 result to the display screen for display.

[0055] Beneficial effects: The essential advancement of this invention lies in upgrading vascular measurement from a "software functional module" to a "dedicated intelligent hardware system." Through the triple innovation of physical sensing (angle measurement), dynamic calibration (catheter reference), and closed calculation chain (automatic output), it solves the industry problem that existing software-based measurement methods cannot simultaneously achieve both efficiency and universality. Attached Figure Description

[0056] Figure 1 This invention illustrates an image of a blood vessel in a cardiovascular interventional procedure.

[0057] Figure 2 for Figure 1 A schematic diagram illustrating the markings of different segments in a medium-sized blood vessel imaging image;

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

[0059] Figure 4 for Figure 3 Side sectional view of the mounting section;

[0060] Figure 5This is a connection diagram of the control system in Example 1;

[0061] Figure 6 for Figure 3 Enlarged view of point A1 in the middle;

[0062] Figure 7 for Figure 3 Top view of the central suction cup;

[0063] Figure 8 This is a schematic diagram of the measuring device in Example 3;

[0064] Figure 9 This is a connection diagram of the control section in Embodiment 3;

[0065] Figure 10 This is a schematic diagram of the measuring device in Example 5;

[0066] Figure 11 This is a schematic diagram of the measuring device in Example 6;

[0067] Figure 12 for Figure 11 Enlarged diagram of point A2 in the middle. Detailed Implementation

[0068] The following detailed description illustrates the specific implementation method:

[0069] The reference numerals in the accompanying drawings include: mounting part 1, mounting space 10, power supply 11, clearance 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, line groove 222, protrusion 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] Example 1

[0071] A portable vascular measurement device, such as Figure 3-4As shown, the device includes a measuring instrument and a controller 3 and a display screen 4 mounted on the measuring instrument. The measuring instrument is similar in shape to an existing compass, including two gauge angles 2 and a mounting part 1. Specifically, the mounting part 1 is located above the two gauge angles 2, and clearance grooves 12 are provided on both sides of the mounting part 1, so that the two gauge angles 2 can be extended up to 180°. A power supply 11 is provided on the mounting part 1, and the controller 3 and the display screen 4 are also mounted on the mounting part 1 and electrically connected to the power supply 11. Specifically, in this embodiment, the power supply 11 and the controller 3 are located in the mounting space 10 of the mounting part 1, and the display screen 4 is located on the outer surface of the mounting part 1.

[0072] The tops of the two gauge angles 2 are connected by a rotating shaft. An angle sensor 20 for detecting the opening angle of the gauge angles 2 is also set between the two gauge angles 2. The angle sensor 20 is electrically connected to the controller 3. Specifically, the angle sensor 20 adopts a high-precision rotary encoder, which is fixed at one end of the rotating shaft and rotates synchronously with the two gauge angles 2. It is connected to the controller 3 through a signal line. When the gauge angles 2 open, the rotating shaft drives the angle sensor 20 to rotate, and the opening angle θ is detected in real time.

[0073] like Figure 5 As shown, 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 two gauge angles 2 into the side length value corresponding to the angle based on the angle signal detected by the angle sensor 20 and the length of the two gauge angles 2 stored in advance. The side length value is the measured diameter of the angiographic blood vessel 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 angle conversion module 31 stores the following formula:

[0076]

[0077] Where r is the measured diameter of the blood vessel (mm), L is the length of gauge angle 2 (mm, fixed value), and θ is the opening angle of gauge angle 2 (°); when the angle sensor 20 sends the opening angle of gauge angle 2 to the angle conversion module 31, the angle conversion module 31 calculates using the above formula and outputs the measured diameter r of the blood vessel.

[0078] The calculation module 33 is used to calculate the stenosis rate of the narrowed blood vessel based on the received measured diameter r and the pre-stored Formula 1, and then send the calculated stenosis rate to the display screen 4 for display. Specifically, Formula 1 is as follows:

[0079]

[0080] Where r1 is the measured diameter of the normal vessel proximal to the stenotic vessel, r2 is the measured diameter of the normal vessel distal to the stenotic vessel, and r3 is the measured diameter of the narrowest point in the stenotic segment; specifically, as... Figure 1-2 The image shows a segment of blood vessel, with the names of each segment identified to facilitate understanding of the positions of r1, r2, and r3 in this embodiment. Since blood vessels are complex and not perfectly regular in shape, the specific location of each segment during actual measurement is determined by the physician.

[0081] Better than Figure 3 , 5 As shown, in this embodiment, the mounting part 1 is also provided with a button module 5. 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 power supply 11 to be turned on and off, serving as the main switch for the entire device. The calibration button 52 is electrically connected to the controller 3 and is used to send a recording command 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 precise adjustment is required when actually moving the two gauges 2 to position their tips at the two boundaries of the vascular image; however, after setting the calibration button 52, the controller 3 will only record the signal sent by the angle sensor 20 when the doctor confirms that the tips of the gauges 2 are precisely aligned with the two boundaries of the vascular image and presses the calibration button 52. This ensures that each measurement is triggered in the state that the doctor considers most accurate, avoids measurement errors caused by unexpected signal recording, greatly improves the accuracy of the measurement operation, and makes the measurement results more realistically reflect the actual size of the blood vessel.

[0083] like Figure 6 As shown, the guide angle 2 includes a first guide angle 21 and a second guide angle 22. A suction cup 211 is provided at the tip of the first guide angle 21, and the center of the tip coincides with the center of the suction cup 211. Specifically, the suction cup 211 is movably connected to the tip of the first guide angle 21, allowing the suction cup 211 to rotate around the tip of the first guide angle 21, for example, by using a ball joint connection. Figure 7As shown, the surface of the suction cup 211 is provided with several marker lines 2110 passing through the center of the suction cup 211. During use, it is convenient to quickly select a suitable marker line 2110 corresponding to the boundary direction of the blood vessel image. The suction cup 211 is also provided with a strip groove 2111 extending along the diameter of the suction cup 211. The strip groove 2111 is used to avoid and accommodate the second guide angle 22 when it is closed. It is worth noting that the first guide angle 21 and the second guide angle 22 mentioned in this embodiment are for ease of description and do not specifically refer to any particular guide angle 2.

[0084] In this embodiment, the suction cup 211 can be an existing transparent silicone suction cup. When the suction cup 211 is placed against the computer screen, it can achieve a certain degree of adsorption and positioning, thereby preventing the tip of the gauge 2 from sliding on the screen. The several marking lines 2110 passing through the center on the surface of the suction cup 211 provide doctors with a clear and intuitive positioning reference, making it easier for doctors to quickly identify the boundary for positioning. The strip groove 2111 plays a role in avoiding displacement and storing and protecting the second gauge 22, which can avoid the risk of damage to the gauge 2 due to accidental collision.

[0085] like Figure 3 As shown, a laser indicator 221 is also provided on the second angle 22. Specifically, a mounting groove and a wire groove 222 can be provided in the second angle 22. The laser indicator 221 is set in the mounting groove, and the emission point of the laser indicator 221 is located at the tip of the second angle 22. The laser indicator 221 is electrically connected to the controller 3 through a signal line, which passes through the wire groove 222. Specifically, the laser indicator 221 is a laser diode. When the angle sensor 20 detects that the two angles 2 are open for the first time, it sends a signal to the controller 3. 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 open, it means that the angle of the two gauge angles 2 detected by the angle sensor 20 is increasing from zero. At this time, the controller 3 controls the laser indicator 221 to turn on. When the two gauge angles 2 are closed after use, and the angle detected by the angle sensor 20 is 0 or in the range of 0-2°, the controller 3 receives the signal and controls the laser indicator 221 to turn off.

[0087] If the laser indicator 221 remains lit when the two guide angles 2 are closed, it indicates that the two guide angles 2 are not fully closed. In this case, the second guide angle 22 may not be retracted into the suction cup 211, and its tip may be exposed, potentially causing injury or injuring others. The laser indicator 221 also serves as a reminder to the user to manually close the two guide angles 2 again until the laser indicator 221 goes out. In other words, when the guide angles 2 are open, the laser indicator 221 can be used to guide the doctor to quickly position and align the second guide angle 22 at the blood vessel boundary. When the guide angles 2 are closed, it can also indicate whether the guide angles 2 are fully closed to zero angle, thus ensuring that the second guide angle 22 is retracted into the groove 2111 of the suction cup 211.

[0088] By setting the laser pointer 221 emission point at the tip of the second angle 22, doctors can use this laser beam to more accurately align the tip of the second angle 22 with the blood vessel boundary, which greatly improves the accuracy of positioning compared to simply relying on visual observation. Especially when the blood vessel image details are complex and the boundaries are blurred, the clear indication provided by the laser pointer 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 angle 2 is in the open state, it triggers the controller 3 to turn on the laser indicator 221. The whole process is highly automated 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 consultation and training scenarios, the laser indicator 221 can provide doctors with efficient and accurate measurement assistance, enhance the applicability and practicality of the measuring instrument in different medical scenarios, and better meet the needs of medical workers for convenient, efficient and accurate measurement.

[0090] In use, first magnify the image of the angiographic segment to be tested on the computer screen by a certain factor, then open the first angle 2 and attach the suction cup 211 on the tip of the first angle 21 to one of the boundaries of the vascular image. At this time, any one of the marking lines 2110 on the suction cup 211 coincides with the boundary of the vascular image. Then adjust the second angle 22 so that the tip of the second angle 22 is positioned on the second boundary of the vascular image. During this process, the laser at the tip of the second angle 22 plays a strong guiding role, which helps the doctor to locate the image more quickly. After the positions of the two angles 2 are determined, press the calibration button 52. At this time, the controller 3 receives the signal sent by the angle sensor 20, records the signal, and converts it using the angle conversion module 31.

[0091] Specifically, three sets of data were selected for measurement, such as Figure 2 As shown, the measured diameters are r1 (proximal to the stenotic vessel), r2 (distal to the stenotic vessel), and r3 (narrowest point of the stenotic 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 stenotic vessel can be seen on the display screen 4 immediately.

[0092] Example 2

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

[0094] When in use, when the doctor closes the first guide angle 21 and places it into the strip 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 guide angle 21 is open, the laser indicator 221 remains on. This intelligent control logic ensures that the laser indicator 221 only works during actual measurement, avoiding unnecessary activation, reducing energy consumption, increasing service life, and reducing operation steps, thus improving the overall smoothness and convenience of the operation.

[0095] Example 3

[0096] The difference between this embodiment and embodiments one and two is that, as Figure 8 As shown, the mounting unit 1 is also equipped with a switching button 53, which is electrically connected to the controller 3 and is used to send switching commands to the controller 3. The controller 3 has a variety of standard catheter models and corresponding standard catheter diameters pre-stored. The switching button 53 is used to select the standard catheter type and displays the selected standard catheter model and diameter on the display screen 4. Specifically, different types of interventional surgeries at different sites will select different catheter models depending on the specific circumstances. For example, coronary angiography and interventional treatment usually use 4F to 6F catheters; cerebral angiography and interventional treatment usually use 4F to 7F catheters; and peripheral angiography and interventional treatment usually use 2F to 10F catheters.

[0097] like Figure 9 As 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 ease of distinction, the actual diameter is represented by R. (1、2、3) Formula 2 is as follows:

[0098]

[0099] Where, r (1、2、3) The measured diameter is obtained after conversion by the angle conversion module 31. r0 is the magnified measured diameter obtained from the first measurement of the standard catheter. 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 refer to standard catheters of 4F, 5F, and 6F, respectively. 1F equals 0.333mm, so the diameter of 4F catheter is approximately 1.33mm, the diameter of 5F catheter is approximately 1.67mm, and the diameter of 6F catheter is approximately 2.00mm.

[0100] In vascular measurement, due to factors such as the display scale of the computer screen, the directly measured vascular diameter is not its actual size. This embodiment uses standard catheter measurement data for calibration. First, the magnified measurement diameter r0 is obtained by measuring the standard catheter. Combined with the known actual diameter fx of the standard catheter, the magnification ratio displayed on the screen can be accurately calculated. Based on this, the vascular measurement diameter r obtained by the angle conversion module 31 is... (1、2、3) Substituting into Formula 2, the actual diameter R of the blood vessel can be output. (1、2、3) .

[0101] This calculation method based on standard catheter calibration effectively eliminates the interference of screen display factors on the measurement results. In actual measurement, no matter how many times the vascular 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 appropriate size of the implantable device in the blood vessel.

[0102] In this embodiment, the display screen 4 can display two or four sets of data, specifically: the stenosis rate of the stenotic vessel, the actual diameter R3 of the narrowest segment of the stenotic vessel, or, as needed, two additional sets of data, the actual diameters R1 and R2 of the normal vessels at the proximal and distal ends of the stenotic vessel.

[0103] Example 4

[0104] This embodiment also provides a portable vascular measurement method, using a portable vascular measurement device disclosed in Embodiment 3 as the measuring tool, specifically including the following steps:

[0105] S1. Magnify the image of the angiographic segment to be tested on the computer screen by a certain factor;

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

[0107] S3. Open the two gauges 2 of the measuring instrument so that the tips of the two gauges 2 are located on the two sides of the standard guide tube on the image. Then press the calibration button 52. At this time, the controller 3 records the angle signal sent by the current angle sensor 20. The angle signal is converted into the measurement diameter of the standard guide tube by the angle conversion module 31, and stored by the storage module 32 and recorded as r0.

[0108] S4. Move the measuring instrument to the two sides of the proximal normal blood vessel of the narrow blood vessel segment. After determining the position, press the calibration button 52 to obtain the measured diameter of the proximal normal blood vessel. The storage module 32 stores it and records it as r1.

[0109] S5. Move the measuring instrument to the two sides of the normal blood vessel at the distal end of the narrow blood vessel segment, press the calibration button 52, obtain the measured diameter of the distal normal blood vessel, store it in the storage module 32, and record it 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 to 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 narrowed 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 results are then sent to display screen 4 for display.

[0112] The essential advancement of this invention lies in upgrading vascular measurement from a "software functional module" to a "dedicated intelligent hardware system." Through the triple innovation of physical sensing (angle measurement), dynamic calibration (catheter reference), and closed calculation chain (automatic output), it solves the industry problem that existing software-based measurement methods cannot simultaneously achieve both efficiency and universality.

[0113] Example 5

[0114] The difference between this embodiment and Embodiment 3 is that, as Figure 10As shown, a flexible display screen 6 is also provided between the first angle 21 and the second angle 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 curved edge, and the two straight edges of the flexible display screen 6 are respectively connected to the first angle 21 and the second angle 22. Specifically, in this embodiment, a storage groove 212 is provided on the side of the first angle 21 closest to the first angle 22. When the two angles 21 are closed, the flexible display screen 6 is stored in the storage groove 212 of the first angle 21. In use, after the controller 3 receives the signal from the angle sensor 20, it controls the flexible display screen 6 to uniformly display scale lines along the curved edge. The scale lines are protractor scale lines.

[0115] Specifically, in this embodiment, the mounting part 1 is also provided with a conversion button 54. When the measuring instrument needs to be used 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 received signal from the angle sensor 20 to the flexible display screen 6. The flexible display screen 6 displays the scale lines evenly along the arc edge. More preferably, in addition to displaying the 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 functionality of the measuring instrument. Originally, the instrument primarily focused on measuring and calculating blood vessel diameter and stenosis rate. Now, by displaying protractor scale lines on the flexible display screen 6, it adds angle measurement and display functions. This allows the measuring instrument to not only be used for blood vessel measurement but also in other medical scenarios or related experiments requiring angle measurement. For example, in experiments studying the relationship between blood vessel curvature angle and disease, doctors can use this measuring instrument to directly obtain angle data. This functional expansion enhances the device's application scope and practicality, making it a more versatile medical aid tool and providing convenience for medical professionals in various fields.

[0117] Example 6

[0118] The difference between this embodiment and Embodiment 1 is that, as Figure 11-12 As shown, both the switch button 51 and the calibration button 52 are located on the first guide angle 21. A wire groove 222 is also provided on the first guide angle 21, through which 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 part 1. Specifically, the first guide angle 21 also has a thumb groove 212 for easy gripping, and the calibration button 52 is located above the thumb groove 212, facilitating pressing the calibration button 52 with the thumb after positioning.

[0119] The switch button 51 is located on the side wall of the first guide angle 21 near the second guide angle 22. Specifically, a groove 213 is provided on the side wall of the first guide angle 21, and the switch button 51 is located in the groove 213. A protrusion 223 is provided on the corresponding side wall of the second guide angle 22. The protrusion 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 protrusion 223 is removed from the groove 213, the switch button 51 turns on the power circuit. When the protrusion 223 extends into the groove 213 and triggers the switch button 51, the switch button 51 turns off the power circuit.

[0120] Even better, the side wall of the groove 213 is also provided with an elastic limiting member 2131, such as rubber or silicone. The elastic limiting member 2131 plays a certain limiting and fixing role for the protrusion 223, ensuring that when the protrusion 223 is inserted into the groove 213, it can stably contact and trigger the switch button 51; thus, when the two gauges 2 are closed, the switch button 51 automatically turns off the power circuit, and when the gauges 2 are opened, the power circuit is turned on.

[0121] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A portable blood vessel measuring device, characterized in that: The measuring instrument includes a measuring instrument and a controller and display screen mounted on the measuring instrument. The measuring instrument includes two gauges and a mounting part. A power supply is provided on the mounting part. The controller and display screen are also mounted on the mounting part and are electrically connected to the power supply. The tops of the two gauges are connected by a rotating shaft. An angle sensor for detecting the opening angle of the gauges is also provided between the two gauges. The angle sensor is electrically connected to the controller. The controller includes 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 based on 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 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 calculates the stenosis rate of the narrowed blood vessel according to the pre-stored Formula 1, and sends the calculated stenosis rate to the display screen for display. Formula 1 is as follows: in, r 1 represents the measured diameter of a normal vessel proximal to the narrowed vessel. r 2 represents the measured diameter of a normal blood vessel distal to the narrowed vessel. r 3 represents the measured diameter at the narrowest point of the stenotic vascular segment.

2. The portable blood vessel measuring device according to claim 1, characterized in that: The mounting section is also equipped with a button module, which includes a calibration button and a power 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 vascular measurement device according to claim 2, characterized in that: The gauge includes a first gauge and a second gauge. The tip of the first 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 several marking lines that pass through the center of the suction cup.

4. A portable vascular measurement device according to claim 3, characterized in that: The suction cup is also provided with a strip groove that runs along the diameter of the suction cup. The strip groove is used to avoid and accommodate the second gauge when it is closed.

5. A portable vascular measurement device according to claim 4, characterized in that: A laser indicator is also provided on the second angle, wherein the laser indicator's emission point is located at the tip of the second angle, and the laser indicator is electrically connected to the controller; when the angle sensor detects that the two angles are open, it sends a signal to the controller, and the controller controls the laser indicator to turn on.

6. A portable blood vessel measuring device according to claim 5, characterized in that: A sensor is also installed inside the strip groove. The sensor is electrically connected to the controller. When the sensor detects that the first guide angle is closed, it sends a signal to the controller. The controller then controls the laser indicator to turn off; otherwise, it controls the laser indicator to turn on.

7. A portable vascular measurement device according to claim 6, characterized in that: The installation unit is also equipped with a switching button, which is electrically connected to the controller. The controller has a variety of standard catheter models and corresponding standard catheter diameters pre-stored. The switching button is used to select the standard catheter type and displays the selected standard catheter model and diameter on the display screen.

8. A portable vascular measurement device according to claim 7, characterized in that: The calculation module also includes a blood vessel diameter calculation unit, which is used to calculate the actual diameter of the blood vessel according to a pre-set formula two, as follows: in, r （1、2、3） The measured diameter is obtained after conversion by the angle conversion module. r 0 represents the magnified measurement diameter obtained from the first measurement of the standard catheter. fx The actual diameter corresponding to a certain type of standard catheter, including f 4. f 5. f 6.

9. A portable blood vessel measuring device according to claim 8, characterized in that: A flexible display screen is also provided between the first and second protractor angles. 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 and second protractor angles. 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. The scale lines are protractor scale lines.

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