A length-identified guidewire device and a resistance monitoring method thereof

Abstract

The application relates to the technical field of medical devices, and discloses a guide wire device with length identification and a resistance monitoring method thereof. The device comprises a detection box body provided with an inlet and an outlet, the inlet and the outlet are communicated through an arc-shaped detection channel, the channel is composed of an inlet straight section, a middle arc-shaped section and an outlet straight section in sequence, the inner diameter of the channel is matched with the outer diameter of the guide wire, and the surface of the guide wire is provided with a scale for length identification; a pressure sensor is arranged on the inner wall of the channel and is connected with a control host, the pressure sensor is used for detecting the resistance of the guide wire when the guide wire is pushed in the blood vessel in real time and transmitting data; a length detection device is arranged on the outlet side and is also connected with the control host, the length detection device is used for collecting guide wire use length information; and the control host comprehensively judges whether abnormal resistance exists in the guide wire pushing process according to the resistance value and the length information. The application avoids single-point misjudgment, and improves the detection accuracy and reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a length-indicated guide wire device and a resistance monitoring method thereof. BACKGROUND

[0002] Guide wires are indispensable important devices in vascular interventional surgery and are widely used in minimally invasive interventional treatment of cardiovascular, neural and peripheral vascular, etc. The main function of guide wires is to provide support and guidance for catheters so that they can smoothly pass through the narrow, curved or occluded parts of blood vessels and reach the lesion area. In clinical operation, the pushing process of the guide wire is often accompanied by varying degrees of resistance changes, and doctors usually rely on hand feeling experience to judge whether the front end of the guide wire meets the blood vessel wall blockage or enters the wrong blood vessel branch. However, this subjective experience-dependent method has great uncertainty, and it is difficult to achieve accurate monitoring of resistance changes, which may cause misjudgment and affect the safety and success rate of the operation.

[0003] To solve the above problems, for example, CN221981355U proposes a guide wire pushing resistance detection device and vascular interventional surgery guide wire delivery device. The resistance detection device can reflect the resistance information of the guide wire in the blood vessel by detecting the force of the sensor, and the control host analyzes and presents the resistance information to medical staff through the display. Although it can achieve the monitoring of guide wire resistance to a certain extent, it still has the following shortcomings: most of the existing devices can only provide a single parameter of resistance size, lack of synchronous detection of guide wire pushing length, and thus cannot establish the corresponding relationship between resistance and guide wire pushing position; unable to form a curve of resistance changing with length, making it difficult to help doctors intuitively analyze the resistance distribution in the guide wire pushing process; lack of abnormal resistance discrimination and recording mechanism, unable to automatically alarm and generate event log when the resistance exceeds the threshold or is continuously abnormal, which limits the auxiliary decision-making role of the device in the clinic to a certain extent.

[0004] Therefore, it is necessary to design a length-indicated guide wire device and a resistance monitoring method thereof to solve the problems in the current technology. SUMMARY

[0005] In view of this, the present application provides a length-indicated guide wire device and a resistance monitoring method thereof, aiming to solve the problems of lack of intuitive discrimination of resistance distribution in the guide wire pushing process and abnormal resistance discrimination.

[0006] In one aspect, the present application provides a length-identified guide wire device, comprising a detection box, opposite two side walls of the detection box are respectively provided with an inlet and an outlet for the guide wire to enter and exit, the inlet and the outlet are communicated through an arc-shaped detection channel, the detection channel comprises an inlet channel, an intermediate channel and an outlet channel connected in sequence, the inlet channel and the outlet channel are straight channels, and the intermediate channel is an arc-shaped channel; the inner diameter of the detection channel matches the outer diameter of the guide wire; a scale for length identification is arranged on the surface of the guide wire;

[0007] The inner wall of the detection channel is provided with a pressure sensor, the pressure sensor is electrically connected with a control host, detects the resistance value of the guide wire during the guide wire advancing in the blood vessel based on a real-time clock circuit, and transmits the detected resistance value to the control host through a time stamp record; a length detection device is arranged on the guide wire outlet side of the detection box and is electrically connected with the control host, the length detection device detects the used length information of the guide wire based on a real-time clock circuit, and transmits the detected used length information to the control host through a time stamp record; the control host compares and judges whether the resistance of the guide wire during the advancing process is abnormal through continuous data sequence according to the resistance value and the used length information.

[0008] Further, the control host further comprises an acquisition unit, a processing unit, a judgment unit and a recording unit;

[0009] The acquisition unit is used for acquiring the used length information of the guide wire during the advancing process based on the length detection device, acquiring the resistance value of the guide wire based on the pressure sensor, and recording the used length information and the resistance value of the guide wire at each moment through a time stamp mode;

[0010] The processing unit is used for synchronously processing the used length information and the resistance value according to the time stamp, determining that each resistance value corresponds to a group of used length information, establishing corresponding data records for each resistance value and the used length information corresponding thereto, forming a length-resistance data pair, and generating a length-resistance change curve;

[0011] The judgment unit is used for comparing and judging each resistance value and the resistance threshold of the corresponding used length information in real time; when the resistance value exceeds the resistance threshold of the corresponding used length information and the duration exceeds a time threshold, it is determined that the resistance is abnormal;

[0012] The recording unit is used for recording the used length information, the resistance value and the occurrence time when the abnormality occurs, and generating an abnormal event log.

[0013] Further, when the acquisition unit records the used length information and the resistance value of the guide wire at each moment through the time stamp mode, it comprises:

[0014] The acquisition unit obtains the used length information and resistance value with time stamp based on a real-time clock circuit; all the used length information and resistance value with time stamp enter independent data queue buffer area respectively for collection and sorting; when the time stamp difference of adjacent two data is less than the upper limit of sampling interval, it is determined as valid continuous acquisition state, otherwise the time abnormality detection mechanism is triggered and the clock synchronization is recalibrated.

[0015] Further, when the processing unit synchronously processes the used length information and resistance value according to the time stamp, it includes:

[0016] The processing unit transmits the used length information and resistance value to the input buffer area through independent data channels respectively, compares the time stamps of the two groups of data, and performs time matching with millisecond level precision; when the time stamp of a group of resistance value is within the time tolerance range of a used length information, it is determined as data collected at the same time.

[0017] Further, when the processing unit synchronously processes the used length information and resistance value according to the time stamp, it further includes:

[0018] In the data matching process, if a resistance value cannot find corresponding time-matched used length information, the resistance value is temporarily stored and waits for the subsequent backfill matching of the transmitted used length information; if a used length information does not correspond to any resistance value, an empty value marker is inserted in the corresponding position to maintain the data sequence integrity.

[0019] Further, when the processing unit establishes corresponding data records for each resistance value and its corresponding used length information to form the length-resistance data pair, it includes:

[0020] The processing unit assigns a unique data identifier to each group of matched used length information and resistance value; the data identifier includes time stamp number, sensor number and length detection device number; the processing unit combines the used length information, resistance value, data identifier and corresponding time stamp into a structured data record, and encapsulates it into the length-resistance data pair according to the data format; and arranges it to form a continuous data sequence according to the acquisition time sequence.

[0021] Further, when the processing unit generates the length-resistance change curve, it includes:

[0022] The processing unit reads the used length information and corresponding resistance value in each group of data from the continuous data sequence in sequence; each group of data is taken as a coordinate point, in which the used length information is taken as the horizontal axis parameter and the resistance value is taken as the vertical axis parameter, and the position in the display coordinate system is determined point by point;

[0023] The processing unit connects adjacent coordinate points in chronological order of data acquisition to form a continuous polyline pattern; the continuous polyline pattern serves as the length-resistance change curve.

[0024] Further, when the judgment unit point-by-point compares the real-time acquired resistance value of the guide wire with the resistance threshold value corresponding to the used length information, it includes:

[0025] The judgment unit obtains the resistance threshold value corresponding to the current used length information from the threshold database; the threshold database is divided into multiple intervals according to the guide wire advancing length, and each interval is provided with a corresponding maximum allowed resistance threshold value; when the used length information is located between two intervals, the judgment unit determines the current applicable intermediate threshold value through interval matching algorithm according to the resistance threshold values of the adjacent two intervals; the judgment unit compares the current resistance value with the obtained corresponding resistance threshold value, and if the current resistance value is greater than the corresponding resistance threshold value, it is marked as a to-be-confirmed abnormal point; the judgment unit continuously tracks the subsequent consecutive data points of the to-be-confirmed abnormal point and counts the number of times and the duration that the resistance threshold value is continuously exceeded.

[0026] Further, when the judgment unit determines that the resistance abnormality occurs in the guide wire advancing process, it sends an abnormal trigger signal to the recording unit; the recording unit extracts the used length information, the resistance value and the time stamp as the occurrence time corresponding to the abnormal occurrence time from the latest length-resistance data pair as the occurrence time; at the same time, it obtains and records the abnormal type identifier, which is divided into different levels according to the degree or duration of exceeding the threshold value; and combines it into a complete abnormal event entry according to the log data format, and assigns a unique event number.

[0027] When the judgment unit determines that the resistance abnormality occurs in the guide wire advancing process, it sends an abnormal trigger signal to the recording unit; the recording unit extracts the used length information, the resistance value and the time stamp as the occurrence time corresponding to the abnormal occurrence time from the latest length-resistance data pair as the occurrence time; at the same time, it obtains and records the abnormal type identifier, which is divided into different levels according to the degree or duration of exceeding the threshold value; and combines it into a complete abnormal event entry according to the log data format, and assigns a unique event number.

[0028] Compared with the prior art, the beneficial effects of the present application are that: through the cooperation of the pressure sensor and the length detection device, and combined with the time stamp mechanism, the accurate synchronization of the guide wire resistance information and the used length information is realized, overcoming the shortcomings of the prior art that only resistance or length data can be obtained. The resistance and length information are established as length-resistance data pairs, and a continuous length-resistance change curve is generated, which intuitively shows the resistance distribution of the guide wire during the advancing process in the blood vessel, providing a clearer operation reference for the doctor. By setting the length-related resistance threshold and combining with the time threshold for point-by-point comparison, the resistance abnormality of the guide wire at a specific advancing position can be identified in time, avoiding single-point misjudgment and improving the accuracy and reliability of the detection. When the resistance abnormality occurs, the length, resistance value, occurrence time and abnormal type at the time of the abnormality can be automatically saved, and an event log is generated, providing detailed basis for intraoperative decision, postoperative review and case archiving.

[0029] In another aspect, the present application provides a length-marked guide wire device resistance monitoring method, which is used for the length-marked guide wire device described above, comprising:

[0030] Based on the length detection device, the used length information during the advancing process of the guide wire is collected, and based on the pressure sensor, the resistance value of the guide wire is collected, and the used length information and the resistance value of the guide wire at each time are recorded by time stamp;

[0031] According to the time stamp, the used length information and the resistance value are synchronously processed, and it is determined that each resistance value corresponds to a group of used length information; and each resistance value and its corresponding used length information are established as corresponding data records, forming length-resistance data pairs; and a length-resistance change curve is generated;

[0032] The real-time collected resistance value of the guide wire is compared with the resistance threshold of its corresponding used length information point by point; when the resistance value exceeds the resistance threshold of its corresponding used length information and the duration exceeds the time threshold, it is determined that the resistance is abnormal;

[0033] The used length information, resistance value and occurrence time at the time of the abnormality are recorded, and an abnormal event log is generated.

[0034] It can be understood that the length-marked guide wire device and the resistance monitoring method thereof described above have the same beneficial effects, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of preferred embodiments and are not meant to limit the present application. Moreover, the same reference numerals in the attached drawings indicate the same or similar components. In the drawings:

[0036] Figure 1 The structural schematic diagram of the length-identified guide wire device provided by the embodiment of the present application is shown in the figure;

[0037] Figure 2 The base structure schematic diagram of the length-identified guide wire device provided by the embodiment of the present application is shown in the figure;

[0038] Figure 3 The flow chart of the resistance monitoring method of the length-identified guide wire device provided by the embodiment of the present application is shown in the figure.

[0039] In the figure, 1 is a detection box, 2 is a detection channel, 21 is an inlet channel, 22 is a middle channel, 23 is an outlet channel, 3 is a guide wire, 4 is a pressure sensor, and 5 is a length detection device. DETAILED DESCRIPTION

[0040] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be accurately conveyed to those skilled in the art. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0041] The existing guide wire propulsion resistance detection technology mostly relies on the pressure sensor arranged in the detection channel to perceive the compression force generated by the guide wire bending, and converts the information into an electrical signal output. Although this method can reflect the resistance of the guide wire in the blood vessel to a certain extent, there are still many deficiencies. The device of this type cannot obtain the propulsion length information of the guide wire at the same time, the resistance change cannot correspond to the position of the guide wire in the blood vessel, which makes it difficult for the doctor to accurately determine the specific part where the resistance anomaly occurs; the existing device generally only provides single-point resistance detection data, lacks continuous monitoring and curve analysis of the entire guide wire propulsion process, and cannot truly reflect the resistance distribution characteristics, thereby limiting the doctor's overall grasp of the complex blood vessel environment; the existing technology lacks intelligent means in anomaly discrimination, and cannot effectively distinguish between temporary fluctuations and persistent anomalies, which is prone to misjudgment or omission; the existing system generally does not have recording, archiving and tracing functions, and it is difficult to provide reliable basis for postoperative analysis, case study and experience summary, which limits its promotion value in clinical application.

[0042] For example, in a coronary intervention surgery, the doctor needs to push the guide wire to the distal lesion area. When the guide wire passes through the blood vessel bifurcation, if it mistakenly enters the side branch vessel, the front end of the guide wire will encounter greater resistance. Since the existing device can only indicate an increase in resistance, but cannot provide position information corresponding to the length, the doctor cannot determine which section of the blood vessel the abnormal resistance occurs. If relying on experience to continue operation, it may cause the guide wire to be stuck or even damage the blood vessel intima, and in severe cases, it may cause blood vessel perforation or acute complications. In addition, the occurrence process and data of the abnormal resistance cannot be recorded and saved, and the doctor cannot accurately reproduce the event when reviewing after the operation, which is not conducive to providing reference for similar cases. This lack of information not only affects the immediate safety of the operation, but also limits the accumulation and inheritance of clinical experience.

[0043] To this end, refer to Figures 1-2 The present application proposes a length-identified guide wire device, which comprises a detection box body 1, the opposite two side walls of the detection box body 1 are respectively provided with an inlet and an outlet for the guide wire 3 to enter and exit, the inlet and the outlet are communicated through an arc-shaped detection channel 2, the detection channel 2 includes an inlet channel 21, an intermediate channel 22 and an outlet channel 23 connected in sequence, the inlet channel 21 and the outlet channel 23 are straight channels, and the intermediate channel 22 is an arc-shaped channel; the inner diameter of the detection channel 2 matches the outer diameter of the guide wire 3; the surface of the guide wire 3 is provided with a scale for length identification;

[0044] The inner wall of the detection channel 2 is provided with a pressure sensor 4, the pressure sensor 4 is electrically connected with a control host, detects the resistance value of the guide wire 3 in the process of advancing in the blood vessel based on a real-time clock circuit, and transmits the detected resistance value to the control host through a time stamp record; the length detection device 5 is arranged on the outlet side of the guide wire 3 of the detection box body 1 and is electrically connected with the control host, the length detection device 5 detects the used length information of the guide wire 3 based on a real-time clock circuit, and transmits the detected used length information to the control host through a time stamp record; the control host judges whether the resistance of the guide wire 3 in the advancing process is abnormal through point-by-point comparison of continuous data sequences according to the resistance value and the used length information.

[0045] The detection box 1 is used as the structural bearing component of the whole device, and is used for accommodating the detection channel 2, the pressure sensor 4 and the guide wire length detection device 5. The guide wire 3 is provided with a fixed and controllable detection environment, and is convenient for connecting an external control system to realize signal transmission and data acquisition. The inlet channel 21 and the outlet channel 23 are straight channels, which mainly guide the guide wire 3 to smoothly enter and leave the arc-shaped detection channel 2, and ensure the smoothness of the guide wire 3 before entering the curved section and after leaving the curved section, and reduce unnecessary friction or jamming. The guide wire 3 is an execution tool for interventional operation, and the scale provided on the surface of the guide wire 3 is used for identifying the pushing length, so that the length detection device 5 can obtain the used length information of the guide wire in real time, and synchronously analyze the resistance data. The scale information can provide the doctor with an intuitive pushing length reference. The pressure sensor 4 is fixed on the inner wall of the detection channel, and is used for detecting the resistance of the guide wire 3 in the curved section in real time, and converting the resistance signal into an electric signal to be transmitted to a control host. The pressure sensor 4 accurately reflects the resistance change encountered by the guide wire during the pushing process, and provides basic data for abnormality judgment. The length detection device 5 is arranged on the outlet side of the guide wire, and is used for measuring the used length of the guide wire 3, and transmitting the length information to the control host in real time. Through combination with the pressure sensor data, the corresponding relationship between the resistance of the guide wire 3 and the pushing length is realized. The control host is used as a core processing unit, receives the data of the pressure sensor and the length detection device, and performs data synchronous processing and analysis. The control host can judge whether the resistance of the guide wire 3 appears abnormal during the pushing process, and can generate a length-resistance change curve or an alarm prompt, so as to provide intelligent reference and safety guarantee for the doctor operation.

[0046] Specifically, the length-identified guide wire device realizes comprehensive monitoring of the advancing state of the guide wire 3 by detecting the box and the internal arc-shaped detection channel 2. After the guide wire 3 enters through the inlet channel, it passes through the middle arc-shaped channel and then reaches the outlet channel. The entire channel structure ensures smooth passage of the guide wire 3. If the front end of the guide wire 3 is blocked by the blood vessel wall, the guide wire 3 will further bend or have a further bending tendency in the arc-shaped detection channel 2. The further bending or further bending tendency of the guide wire 3 in the detection channel 2 will compress the pressure sensor 4. The inner diameter of the detection channel 2 is closely matched with the outer diameter of the guide wire 3, so that the guide wire 3 can maintain contact with the inner wall of the channel during movement, ensuring that the pressure sensor 4 can capture the resistance change in real time when the guide wire 3 is stressed. On the surface of the guide wire 3, regular length scales are arranged, which, combined with the length detection device on the outlet side, can accurately obtain the used length data of the guide wire 3 during the advancing process. The length detection device 5 is connected to the control host, which not only transmits the advancing length of the guide wire 3 in real time, but also forms a continuous advancing trajectory in combination with the time sequence, laying a foundation for subsequent data analysis. The pressure sensor 4 in the channel continuously collects the resistance of the guide wire 3 at different advancing positions and converts it into an electrical signal transmitted to the control host. The control host can judge the specific position and degree of resistance abnormality by synchronously analyzing the resistance value and length information. The control host can set multiple resistance threshold values and make differentiated judgments according to different intervals of the advancing length of the guide wire 3. When it is monitored that the resistance continuously exceeds the corresponding threshold value, the operator will be automatically prompted to avoid potential risks when the guide wire mistakenly enters a narrow blood vessel, a collateral blood vessel or encounters a lesion site. The control host can store and curve the resistance and length data, generate a length-resistance change curve, and help doctors intuitively analyze the stress distribution of the guide wire 3 during the advancing process, thereby improving the controllability and safety of the operation.

[0047] The working process and principle are as follows: the operator introduces the guide wire 3 from the inlet channel 21 of the detection box body 1, and the guide wire passes through the middle channel 22 and the outlet channel 23 in turn. The whole channel is designed to ensure that the guide wire passes smoothly and is in close contact with the inner wall of the channel. When the guide wire 3 encounters a bend or the front end is blocked in the middle channel 22, the pressure sensor 4 on the inner wall of the channel will sense the compression force generated by the guide wire 3 and convert it into an electrical signal transmitted to the control host. The pressure sensor 4 collects the resistance information of the guide wire at different advancing positions in real time, ensuring that the force condition can be captured before the guide wire enters the blood vessel. When the guide wire 3 passes through the outlet channel 23, the length detection device 5 synchronously records the used length information of the guide wire and transmits the information to the control host. The length data can correspond to the pressure information to form time series data, which provides a basis for subsequent synchronous analysis. The control host synchronously processes the resistance signal and the length information received. Each resistance value corresponds to a used length value, generates a structured data record, and forms a length-resistance data pair. According to the set resistance threshold, the control host compares the resistance values point by point according to different intervals of the advancing length of the guide wire 3. When the resistance of a certain position exceeds the threshold and the duration exceeds the set time, it is determined that the resistance is abnormal, prompting the operator to adjust the advancing speed or angle of the guide wire, preventing the guide wire 3 from mistakenly entering the narrow blood vessel or damaging the blood vessel wall. The control host can generate a change curve of the length-resistance data after synchronous processing, directly display the resistance distribution in the guide wire advancing process, and record the specific length, resistance value and time of the abnormal event, providing a reliable basis for operation analysis, review and risk assessment.

[0048] As a preferred embodiment, the scheme of the application is implemented as follows: during a coronary intervention operation, the doctor needs to pass the guide wire through the narrow or curved blood vessel branch in order to place a stent or perform balloon expansion. Using the length-marked guide wire device, the guide wire 3 is first sent into the inlet channel 21 of the detection box body 1 by the driving assembly, and then passes through the middle channel 22 to the outlet channel 23 and enters the blood vessel. The middle channel 22 can be deformed due to the resistance in the blood vessel. When the front end of the guide wire 3 encounters a narrow section or plaque resistance inside the blood vessel, the guide wire 3 will produce additional bending in the curved channel, compressing the pressure sensor 4 on the inner wall. The pressure sensor 4 transmits the force information of the guide wire 3 to the control host in real time, and the length detection device 5 records the advancing length of the guide wire. The control host judges the advancing state of the guide wire 3 according to the resistance and length data. When the guide wire 3 is advancing in the curved section of the right coronary artery, the detected resistance value is significantly higher than the preset threshold, and the position corresponding to the length of the guide wire is in the narrow section, so a prompt is immediately issued to remind the doctor to slow down the advancing or adjust the angle of the guide wire 3 to avoid the guide wire 3 penetrating the blood vessel wall or causing damage to the blood vessel. The doctor can intuitively master the force distribution of the guide wire 3 in the blood vessel according to the length-resistance change curve, thereby safely and accurately completing the guide wire advancing operation.

[0049] It can be understood that by detecting the pressure sensor 4 arranged in the channel 2, the change of the resistance received by the guide wire 3 during the advancement in the blood vessel can be perceived in real time, so that the operator can know the force condition of the guide wire in time and avoid the risk of blood vessel injury or penetration caused by blind advancement. The guide wire 3 is provided with a length scale on the surface, and the length detection device 5 on the outlet side can be combined to accurately obtain the used length information of the guide wire, so as to realize the synchronous recording of the resistance data and the advancement length of the guide wire and provide a reliable basis for the operation. According to the resistance value and the used length information, the control host can judge whether the resistance during the advancement of the guide wire 3 is abnormal, and when the resistance exceeds the set threshold value, a prompt can be sent in time to help the medical staff adjust the guide wire operation.

[0050] The application further proposes that the control host further comprises a collection unit, a processing unit, a judgment unit and a recording unit.

[0051] The collection unit is used for collecting the used length information of the guide wire 3 during the advancement of the guide wire 3 based on the length detection device 5 and collecting the resistance value of the guide wire 3 based on the pressure sensor 4, and recording the used length information and the resistance value of the guide wire 3 at each moment by means of time stamp;

[0052] The processing unit is used for synchronously processing the used length information and the resistance value according to the time stamp, determining that each resistance value corresponds to a group of used length information, establishing a corresponding data record for each resistance value and its corresponding used length information, forming a length-resistance data pair, and generating a length-resistance change curve.

[0053] The judgment unit is used for point-by-point comparison between the real-time collected resistance value of the guide wire and the resistance threshold value of its corresponding used length information; when the resistance value exceeds the resistance threshold value of its corresponding used length information and the duration exceeds a time threshold value, it is determined that the resistance is abnormal.

[0054] The recording unit is used for recording the used length information, the resistance value and the occurrence time when the abnormality occurs, and generating an abnormal event log.

[0055] Specifically, the functional units of the control host work together to achieve comprehensive monitoring and accurate analysis of the guidewire pushing process. The acquisition unit, as the core module of data input, is mainly responsible for real-time acquisition of key information of the guidewire 3 during the pushing process. By connecting with the length detection device 5, the acquisition unit acquires the used length information of the guidewire 3, realizing continuous monitoring of the guidewire pushing progress; by connecting with the pressure sensor 4, the acquisition unit acquires the resistance value of the guidewire 3 during the pushing process inside the blood vessel. The acquisition unit marks the length information and resistance value at each moment with a time stamp, ensuring that the data record has a strict time sequence, providing a basis for subsequent data synchronization and analysis. The acquisition unit can set the sampling frequency and time interval to balance real-time performance and data accuracy, ensuring accurate data acquisition under fast guidewire pushing or complex blood vessel environment. The processing unit is responsible for synchronously processing the length information and resistance value acquired by the acquisition unit. By comparing and matching the data with time stamps, each resistance value is corresponded to its exact guidewire pushing length, forming a complete length-resistance data pair. The processing unit not only performs one-to-one data matching, but also compensates for possible time deviation or data loss during the acquisition process. For example, when a piece of resistance data does not have immediate length information, the processing unit will temporarily store the resistance data and wait for the subsequent length information to be backfilled, ensuring the continuity and integrity of the data sequence. The synchronized data is not only used to generate the length-resistance change curve, but also used for statistical analysis, anomaly detection and historical record archiving. The judgment unit uses the length-resistance data pair generated by the processing unit to perform real-time resistance threshold comparison. The threshold database has preset the maximum allowed resistance value corresponding to different length intervals of guidewire pushing. The judgment unit compares the real-time resistance value with the resistance threshold corresponding to the length point by point, and when the resistance value exceeds the set threshold and the duration exceeds the time threshold, it is determined that there is resistance anomaly. The judgment unit can classify the anomaly level according to the amplitude and duration of threshold overrun, and provide different levels of alarm or operation prompt to assist medical staff to take corresponding measures. The recording unit starts the data storage function when an abnormal event occurs, and records the guidewire length, resistance value, time stamp and anomaly level information at the abnormal moment, and generates a structured abnormal event log. The log is not only used for immediate feedback and surgical decision-making, but also used for postoperative review, data analysis and device performance evaluation. The recording unit can combine historical abnormal data with the length-resistance change curve to provide intuitive visual information, helping doctors understand the stress pattern and potential risk points in the guidewire pushing process.

[0056] Among them, the set unit is mainly responsible for real-time acquisition of key data of the guide wire 3 in the advancing process, including the used length information collected by the length detection device 5 and the guide wire resistance value collected by the pressure sensor 4, and each moment of data is marked by a time stamp, ensuring the time sequence and continuity of the data, providing a basis for subsequent analysis. The processing unit synchronously processes the data acquired by the collection unit, matches each resistance value with its corresponding used length information, forms a length-resistance data pair, and generates a visual length-resistance change curve to help medical staff intuitively understand the guide wire stress and advancing state. The judgment unit compares the real-time resistance value with the resistance threshold value of the corresponding length interval, and when the resistance value exceeds the set threshold value and continues to exceed the predetermined time, it is determined that the resistance is abnormal, thereby providing immediate warning to avoid potential risks in the guide wire advancing process. The recording unit is responsible for recording the abnormal guide wire length, resistance value and time information when the abnormality occurs, generating a structured abnormal event log, which is convenient for surgery process tracing, postoperative analysis and device performance evaluation.

[0057] Among them, the resistance threshold value is determined according to the maximum resistance that the guide wire bears when it normally advances in the blood vessel. The guide wire advancing length will be divided into multiple intervals, each corresponding to different possible vessel diameters, bending degrees and lesion risks. For example, when the guide wire enters a relatively thick straight blood vessel segment, the resistance threshold value can be set to a higher value, while when it enters a small or curved blood vessel segment, the resistance threshold value should be reduced to timely discover blockage or abnormal bending. If the actual resistance value exceeds the threshold value set in this interval, it is marked as possible abnormal. In order to improve accuracy, when the guide wire advancing length is between two intervals, the current applicable intermediate resistance threshold value can be calculated by linear interpolation or interval matching algorithm, so as to realize accurate monitoring of continuous length segments. The time threshold value is used to distinguish between transient fluctuating resistance and truly abnormal resistance. Even if the resistance value exceeds the threshold value at a certain moment, if the duration is very short, it may be caused by slight friction between the guide wire and the blood vessel wall, and no alarm is needed; only when the resistance value continuously exceeds the set threshold value for a certain time (such as 0.3-1 seconds, which can be adjusted according to the type of guide wire and the operation environment) is it determined to be abnormal. The setting of the time threshold value can be based on clinical statistical data, combined with the guide wire advancing speed, blood vessel elasticity and doctor's operation habit to make reasonable adjustment.

[0058] The working process and principle are that the acquisition unit first obtains the used length information of the guide wire 3 from the length detection device 5, simultaneously obtains the resistance value borne by the guide wire 3 in the process of advancing in the blood vessel from the pressure sensor 4, and adds a time stamp for each group of data to ensure the time sequence integrity of the data. The processing unit synchronously matches the length information with the resistance value according to the time stamp, forms a plurality of length-resistance data pairs, and generates a length-resistance change curve through continuous data points, which intuitively reflects the force bearing condition of the guide wire under different advancing lengths. The judgment unit compares the real-time resistance value with the preset resistance threshold value of the corresponding length interval point by point, and when the resistance value exceeds the threshold value and the duration exceeds the set time threshold value, it is determined that an abnormal resistance event occurs, prompting the operator that there may be an increase in the blood vessel resistance or a blockage of the guide wire advancing. The recording unit records the used length of the guide wire, the resistance value and the specific occurrence time when the abnormal event occurs, generates a complete abnormal event log, and facilitates intraoperative decision-making reference and postoperative data analysis.

[0059] As a preferred embodiment, the scheme of the application is implemented as follows: in an actual vascular intervention surgery, the doctor uses the length-marked guide wire device to perform guide wire delivery on the coronary artery of the patient. The guide wire 3 slowly enters from the detection box body inlet, passes through the arc-shaped detection channel 2 to the outlet, the pressure sensor 4 collects the resistance value borne by the guide wire in the advancing process in real time, the length detection device 5 synchronously records the used length information of the guide wire, and transmits the data to the control host through the time stamp. As the guide wire advances to a curved lesion segment of the left coronary artery of the patient, the judgment unit of the control host detects that the real-time resistance value is significantly higher than the resistance threshold value of the length segment and continuously exceeds the set time threshold value, and determines that the resistance is abnormal. The recording unit immediately generates an abnormal event log, records that the guide wire advancing length is 35 cm, the resistance value is 1.5 times the calibrated threshold value, and the occurrence time is 12 minutes and 35 seconds after the start of the surgery. The processing unit combines the abnormal point with the front and rear data points to form a length-resistance change curve, which shows that the force borne by the guide wire in the lesion segment is significantly increased. The doctor immediately adjusts the guide wire advancing strategy according to the real-time feedback, safely passes through the narrow blood vessel segment through rotation and slight retreat action, and avoids the risk of possible blood vessel injury or perforation. The whole process shows that the device has the functions of precise monitoring and abnormal prompting of the guide wire force and advancing length during the surgery, which provides effective guarantee for safe and controllable guide wire operation.

[0060] It can be understood that the acquisition unit can synchronously acquire the used length of the guide wire and the resistance information of the guide wire, and accurately record the time position of each data point through the time stamp method, providing a reliable basis for subsequent analysis. The processing unit synchronously matches the resistance value with the corresponding length information, generates a structured length-resistance data pair, and draws a continuous length-resistance change curve, so that the force condition of the guide wire in different advancing stages is visually visualized. The judgment unit can quickly find abnormal resistance conditions by comparing the real-time resistance value with the preset resistance threshold, and determine whether it is a real abnormality in combination with the time threshold, so as to avoid false positives or delayed response. The recording unit automatically generates a log when an abnormality occurs, recording the guide wire length, resistance value and time information, providing a basis for postoperative analysis, data backtracking and operation optimization.

[0061] The application further proposes that when the acquisition unit records the used length information and resistance value of the guide wire at each moment through the time stamp method, it includes:

[0062] The acquisition unit acquires the used length information and resistance value with a time stamp based on a real-time clock circuit; all used length information and resistance values with a time stamp enter independent data queue buffer areas respectively for collection and sorting; when the time stamp difference of adjacent two data is less than the upper limit of the sampling interval, it is determined that it is in a valid continuous acquisition state, otherwise the time abnormality detection mechanism is triggered and the clock synchronization is recalibrated.

[0063] Specifically, the acquisition unit uses the built-in real-time clock circuit to accurately mark the time information of each data point during the guide wire advancing process. When the guide wire passes through the length detection device 5 and the pressure sensor 4, the acquisition unit will attach a time stamp to the acquired used length information and resistance value respectively, and store them in independent data queue buffer areas respectively. The data in the queue is collected and sorted to ensure that each group of data is arranged in chronological order for subsequent synchronous processing and analysis. During data processing, the acquisition unit will calculate the time stamp difference of adjacent two data in real time, if the difference is less than the preset upper limit of the sampling interval, it is determined that it is continuous valid data; if it exceeds the upper limit, the time abnormality detection mechanism will be triggered immediately, and the real-time clock will be recalibrated and synchronized to ensure data continuity and accuracy, thereby providing reliable basic data for subsequent length-resistance analysis.

[0064] As a preferred embodiment, the scheme of the application is implemented as follows: the operator pushes the guide wire into the model blood vessel, and the collection unit records the used length and resistance value of the guide wire in real time. During the experiment, when the guide wire passes through the stenosis section of the blood vessel, the pressure sensor detects that the resistance value increases significantly, and the collection unit timely records the time stamp, guide wire length and resistance value at that moment. After the data enters the independent cache area, it is arranged in chronological order to form a complete advancing trajectory. Since the time difference between the continuous data is kept within the upper limit of the sampling interval, it is successfully determined as valid continuous collection state, thereby ensuring that the subsequent processing unit can accurately generate the length-resistance change curve and accurately reflect the stress condition of the guide wire in the stenosis section of the blood vessel, thereby providing instant operation feedback for the operator.

[0065] It can be understood that by recording the guide wire length and resistance data through the time stamp method, high-precision monitoring and analysis of the entire guide wire advancing process are realized. The independent data queue and time stamp sorting mechanism ensure the continuity and integrity of the data, so that even in the case of changes in the guide wire advancing speed or transient interference, data loss or misplacement can be avoided. The time anomaly detection and real-time clock calibration mechanism further improves the reliability, so that the functions of resistance anomaly identification, length-resistance curve generation and event recording can be accurately performed.

[0066] The application further proposes that when the processing unit synchronously processes the used length information and resistance value according to the time stamp, it includes:

[0067] The processing unit transmits the used length information and resistance value to the input buffer through independent data channels respectively, compares the time stamps attached to the two groups of data, and performs time matching with millisecond-level precision; when the time stamp of a group of resistance values is within the time tolerance range of a certain used length information, it is determined that the data collected at the same time.

[0068] Specifically, during the guide wire advancing process, after the processing unit receives the used length information and resistance value with time stamps transmitted by the collection unit, the two types of data are guided into the input buffer through independent data channels to ensure that the data transmission does not interfere with each other. The processing unit accurately compares the time stamp attached to each data and performs time matching with millisecond-level precision. If the time stamp of a certain resistance value falls within the preset time tolerance range of a certain used length information, it is determined that the two data belong to valid data collected at the same time, and they are paired to form a group of length-resistance data points. Through this synchronous processing method, the accuracy of the subsequent analysis and curve generation data can be ensured, and even in the case of changes in the guide wire advancing speed or signal collection delay, the accuracy of the data correspondence can be ensured.

[0069] The time tolerance range should be determined according to the sampling frequency of the pressure sensor and the length detection device. If the pressure sensor samples 1000 times per second (1 kHz) and the length detection device samples 500 times per second (0.5 kHz), the sampling interval of the two sets of data is 1 millisecond and 2 milliseconds respectively. In this case, the time tolerance can be set to 2-5 milliseconds to ensure that the two sets of data can still match within the millisecond level time difference, while tolerating minor sensor delays or data transmission delays. In order to ensure the continuity of synchronous matching, the processing unit usually uses an input buffer to cache data. The time tolerance range needs to be greater than the maximum value of the internal processing and queuing delay to avoid the data from being unable to match due to short delay. Specifically, the delay from data collection to buffer storage of the processing unit can be measured by experiment, and a safety redundancy slightly higher than the maximum delay value can be set, such as setting the tolerance to 1.2-1.5 times the maximum delay. The guide wire advancing speed will affect the instantaneous amplitude of length change. If the guide wire advancing speed is fast, the length information may change significantly in a short time, so the time tolerance range should be small enough to ensure that the resistance value and the length information at the same advancing position are correctly matched. Generally, for the guide wire advancing speed in clinical operation, a millisecond level tolerance (such as ±3-5 milliseconds) can ensure the synchronization accuracy, while not affecting the response of real-time monitoring. By comprehensively considering the sampling rate, data transmission delay, buffer mechanism and guide wire advancing speed, the time tolerance range can be reasonably set to ensure that each resistance value can be accurately matched with the corresponding used length information.

[0070] As a preferred embodiment, the scheme of the application is implemented as follows: the guide wire enters the arc-shaped channel through the detection box, and the collection unit records the data stream of the guide wire length and resistance value. The processing unit transmits the length information and resistance data to the input buffer through independent channels respectively, and compares the time stamps of each data. When the guide wire passes through the curved section of the blood vessel, the pressure sensor records the instantaneous increase of resistance, and the length detection device synchronously records the length of the guide wire advancing. Since the time stamps of the two sets of data fall within the set time tolerance range, the processing unit correctly matches them as the length-resistance data points collected at the same time. The finally generated length-resistance change curve clearly reflects the force change of the guide wire in the curved section of the blood vessel, providing an accurate reference for the doctor's operation.

[0071] It can be understood that through the millisecond level precision time stamp synchronous processing, the processing unit can accurately match the guide wire length information and resistance value, realizing real-time correspondence and accurate analysis of the data. This method can eliminate errors caused by asynchronous collection of devices or data delay, and ensure that the generated length-resistance data points and curves are highly reliable.

[0072] The application further proposes that when the processing unit synchronously processes the used length information and resistance value according to the time stamp, it further comprises:

[0073] In the data matching process, if a resistance value cannot find the corresponding time-matched used length information, the resistance value is temporarily stored and waits for the subsequent backfill matching of the used length information; if a used length information does not correspond to any resistance value, an empty value mark is inserted in the corresponding position to maintain the integrity of the data sequence.

[0074] Specifically, during the guide wire advancement, due to the delay of the acquisition device or data transmission, the resistance value and the used length information may not arrive at the processing unit at the same time. To ensure the continuity and integrity of the synchronous data processing, the processing unit temporarily stores the resistance value that cannot find the corresponding timestamp in the matching process, and places it in the temporary cache area to wait for the subsequent backfill matching of the incoming used length information. Similarly, if a used length information does not correspond to any resistance value, the processing unit inserts an empty value mark at the position of the data point to maintain the integrity of the data sequence and ensure that the length-resistance data sequence and the change curve generated subsequently do not appear to be broken or misaligned, thereby providing a reliable basis for analysis.

[0075] As a preferred embodiment, the scheme of the present application is implemented as follows: in a vascular intervention training simulation, the guide wire advancement speed is fast, and the data transmission of the length detection device is slightly delayed, resulting in that some resistance values cannot find the corresponding length information in the initial matching. The processing unit temporarily stores these resistance values and performs backfill matching after the length data is supplemented, successfully corresponding them to the correct advancement position. At the same time, in some guide wire advancement paragraphs, due to the temporary signal anomaly of the sensor, some used length information does not correspond to the resistance value, and an empty value mark is inserted at these positions to ensure that the entire length-resistance data sequence is continuous and complete. The length-resistance curve finally generated completely reflects the advancement state of the guide wire without data omission or misalignment.

[0076] It can be understood that the data backfilling and empty value marking mechanism can effectively solve the incomplete matching problem caused by device delay or data anomaly in real-time acquisition process, and ensure the integrity and continuity of the length-resistance data sequence.

[0077] The present application further proposes that the processing unit establishes a corresponding data record for each resistance value and its corresponding used length information when forming a length-resistance data pair, including:

[0078] The processing unit assigns a unique data identifier to each set of successfully matched used length information and resistance value; the data identifier includes a timestamp number, a sensor number, and a length detection device number; the processing unit combines the used length information, the resistance value, the data identifier, and the corresponding timestamp into a structured data record, and encapsulates the length-resistance data pair according to the data format; and arranges the continuous data sequence according to the collection time sequence.

[0079] Specifically, during the guide wire advancing process, the processing unit generates a structured data record for each set of successfully matched resistance value and used length information. To ensure the traceability and uniqueness of the data, each record is assigned a unique data identifier composed of a timestamp number, a pressure sensor number, and a length detection device number. The processing unit packages the used length information, the resistance value, the data identifier, and the corresponding timestamp into a length-resistance data pair, and arranges the continuous data sequence according to the collection time sequence. Through this structured processing method, the source and collection time of each data can be clearly indicated, providing basic data for subsequent analysis, anomaly judgment, and curve drawing.

[0080] As a preferred embodiment, the scheme of the present application is implemented as follows: during a cardiac vascular intervention surgery, the length and resistance information of each segment of the guide wire are collected in real time during the advancing process of the guide wire in the vascular model. The processing unit assigns a unique data identifier, such as "timestamp 20250917153000123_sensor number S01_length device number L01", to each set of synchronously matched data, integrates the guide wire length of 5.3 cm and the corresponding resistance value of 12 grams into a structured record, and arranges the complete data sequence in the order of advancing time. In this way, the doctor can accurately trace back to each moment of the guide wire advancing and the corresponding resistance, which facilitates the analysis of the resistance encountered by the guide wire in different vascular segments.

[0081] It can be understood that by assigning a unique identifier to each length-resistance data and structuring the storage, high-precision management and traceability of the data can be achieved, avoiding repeated records or data confusion. The continuous data sequence provides reliable input for the generation of the length-resistance change curve, enabling the doctor to clearly and intuitively observe the force distribution and abnormal points during the guide wire advancing process.

[0082] The present application further proposes that when the processing unit generates the length-resistance change curve, it includes:

[0083] The processing unit reads the used length information and the corresponding resistance value in each set of data from the continuous data sequence in sequence; each set of data is taken as a coordinate point, with the used length information as the horizontal axis parameter and the resistance value as the vertical axis parameter, and the position in the display coordinate system is determined point by point;

[0084] The processing unit connects adjacent coordinate points in chronological order of data collection to form a continuous polyline graph; the continuous polyline graph is taken as the length-resistance change curve.

[0085] Specifically, when generating the length-resistance change curve, the processing unit reads each set of matched data from the continuous data sequence in turn, including the used length information of the guide wire and the corresponding resistance value. Each set of data is taken as an independent coordinate point, where the horizontal axis represents the used length of the guide wire and the vertical axis represents the resistance of the guide wire at that length. The processing unit uses the display coordinate system to draw each coordinate point point by point, and connects adjacent coordinate points in chronological order of data collection to form a continuous polyline. Through this method, the resistance change of the entire guide wire advancement process can be intuitively presented on a two-dimensional plane, allowing the operator to clearly see the force situation and change trend of the guide wire at different length positions, thereby determining whether the guide wire advancement is smooth or whether there is an abnormal resistance area.

[0086] As a preferred embodiment, the scheme of the present application is implemented as follows: when the guide wire is advanced in the blood vessel model, the pressure sensor and the length detection device collect data in real time and transmit them to the processing unit. The processing unit matches each piece of data to generate length-resistance data pairs in chronological order, such as the resistance of the guide wire being 8 grams when it is advanced to 3.5 cm and the resistance rising to 12 grams when it is advanced to 4.0 cm. The processing unit draws these data points on the coordinate system in turn and connects them to form a polyline, displaying the resistance curve of the guide wire advancing in the blood vessel model. By observing the curve, medical personnel find that the resistance of the guide wire significantly increases at a certain simulated curved part of the blood vessel, thereby timely adjusting the advancement mode to avoid damaging the blood vessel model.

[0087] It can be understood that generating the length-resistance change curve can intuitively and accurately show the force distribution and change trend of the guide wire during the advancement process, providing a scientific basis for the operation. The operator can quickly identify possible abnormal resistance or blockage points in the guide wire advancement process through the curve, take countermeasures in advance, and improve the safety and accuracy of the guide wire operation.

[0088] The further judgment unit of the present application compares the resistance value of the guide wire collected in real time with the resistance threshold value of its corresponding used length information point by point, including:

[0089] The judgment unit obtains the resistance threshold corresponding to the current used length information from the threshold database; the threshold database divides multiple intervals according to the guidewire advancing length, and each interval is provided with a corresponding maximum allowed resistance threshold; when the used length information is located between two intervals, the judgment unit determines the current applicable intermediate threshold by interval matching algorithm according to the resistance thresholds of the adjacent two intervals; the judgment unit compares the current resistance value with the corresponding resistance threshold obtained, and if the current resistance value is greater than the corresponding resistance threshold, it is marked as a to-be-confirmed abnormal point; the judgment unit continuously tracks the subsequent continuous data points of the to-be-confirmed abnormal point and counts the number of times and the duration of continuous exceeding of the resistance threshold.

[0090] Specifically, when monitoring the resistance during the guidewire advancing process, the judgment unit first obtains the maximum allowed resistance threshold corresponding to the current guidewire used length information from the threshold database. The threshold database divides the guidewire advancing length into multiple intervals, and each interval has a preset resistance threshold. When the guidewire length falls between two intervals, the judgment unit calculates the intermediate resistance threshold applicable to the current length by using the interval matching algorithm. The judgment unit compares the real-time collected resistance value with the calculated threshold point by point, and if the resistance value exceeds the threshold, the point is marked as a to-be-confirmed abnormal point. The judgment unit also tracks and counts the subsequent continuous data of the abnormal point, records the number of times and the duration of exceeding the threshold, so as to confirm whether it constitutes a real resistance abnormality.

[0091] As a preferred embodiment, the scheme of the application is implemented as follows: when the guidewire advances to 6.2 cm, the real-time resistance value reaches 15 grams, and the interval threshold at this position is 12 grams. The judgment unit first calculates the current applicable intermediate threshold as 13 grams by using the interval matching algorithm, and marks 15 grams as a to-be-confirmed abnormal point. The judgment unit continuously monitors the continuous resistance data after the point and finds that the resistance of the next three sampling points is 14 grams, 16 grams and 15 grams respectively, all of which exceed the threshold and the duration exceeds the preset time threshold. The judgment unit determines that there is an abnormal resistance of the guidewire in the blood vessel model at this position, and triggers a prompt to remind the operator to slow down the advancing or adjust the operation angle.

[0092] It can be understood that through point-by-point comparison and continuous data monitoring, the judgment unit can accurately identify the abnormal resistance position and duration during the guidewire advancing process, provide early warning, and reduce the risk of guidewire operation.

[0093] The application further proposes that the recording unit records the used length information, the resistance value and the occurrence time when the abnormality occurs, and generates an abnormal event log, including:

[0094] When the judgment unit determines that an abnormal resistance occurs during the guide wire advancement, an abnormal trigger signal is sent to the recording unit; the recording unit extracts the used length information, the resistance value and the time stamp corresponding to the time when the abnormality occurs from the latest length-resistance data pair as the occurrence time; at the same time, the abnormal type identifier is obtained and recorded, and the abnormal type identifier is divided into different levels according to the degree or duration of exceeding the threshold; and combined into a complete abnormal event entry according to the log data format, and a unique event number is assigned.

[0095] Specifically, after receiving the abnormal trigger signal sent by the judgment unit, the recording unit will immediately extract the used length information, the resistance value and the time stamp of the abnormal occurrence time from the latest length-resistance data pair, to ensure that the time and position of the abnormal occurrence can be accurately reflected. The recording unit will divide the abnormal type into different levels according to the degree and duration of the resistance value exceeding the threshold, for example, mild, moderate and severe abnormality, and generate a unique event number for each abnormal event. Finally, the recording unit combines these information into a complete abnormal event entry according to the pre-defined log data format, forms a structured event log, and facilitates subsequent query and analysis.

[0096] As a preferred embodiment, the scheme of the application is implemented as follows: when the guide wire is advanced to 8.5 cm, the resistance value suddenly rises to 18 grams, which exceeds the threshold of 13 grams at this position, and the duration reaches 0.5 seconds. The judgment unit immediately sends an abnormal trigger signal to the recording unit, and the recording unit extracts the used length of 8.5 cm, the resistance value of 18 grams and the time stamp of 12:35:22.150 at this time. According to the pre-set abnormal level division rule, the event is marked as moderate abnormality, the recording unit assigns a unique event number "EVT20250917_001" to the event, and combines the complete information into an abnormal event log entry, which is stored in the database for further analysis.

[0097] It can be understood that by automatically generating an abnormal event log by the recording unit, the resistance abnormality occurring during the guide wire advancement and its specific time, position and level can be accurately tracked, which provides clear abnormal information for the operator and improves the controllability and safety of the clinic.

[0098] In another preferred way based on the above embodiment, referring to Figure 3 The embodiment provides a length-identified guide wire device resistance monitoring method, which is applied to the length-identified guide wire device described above, and includes the following steps:

[0099] S100: Based on the length detection device, the used length information during the guide wire advancement is collected, and based on the pressure sensor, the resistance value of the guide wire is collected, and the used length information and the resistance value of the guide wire at each time are recorded by the time stamp method;

[0100] S200: synchronizing the used length information and the resistance value according to the time stamp, determining that each resistance value corresponds to a group of used length information, establishing a corresponding data record for each resistance value and its corresponding used length information, forming a length-resistance data pair, and generating a length-resistance change curve;

[0101] S300: point-by-point comparing the resistance value of the real-time collected guide wire with the resistance threshold of its corresponding used length information; when the resistance value exceeds the resistance threshold of its corresponding used length information and the duration exceeds a time threshold, it is determined that the resistance is abnormal.

[0102] S400: recording the used length information, resistance value and occurrence time when the abnormality occurs, and generating an abnormal event log.

[0103] In summary, through the cooperative action of the pressure sensor and the length detection device, and in combination with the time stamp mechanism, the accurate synchronization of the guide wire resistance information and the used length information is realized, overcoming the shortcomings of the prior art that can only obtain resistance or length data alone. The resistance and length information are established as a length-resistance data pair, and a continuous length-resistance change curve is generated, which intuitively presents the resistance distribution of the guide wire during the pushing process in the blood vessel, providing a clearer operation reference for the doctor. By setting the length-related resistance threshold and combining the time threshold for point-by-point comparison, the resistance abnormality of the guide wire at a specific pushing position can be identified in time, avoiding single-point misjudgment and improving the accuracy and reliability of the detection. When the resistance abnormality occurs, the length, resistance value, occurrence time and abnormal type at the time of the abnormality can be automatically saved, and an event log is generated, providing detailed basis for intraoperative decision-making, postoperative review and case archiving.

[0104] Those skilled in the art will appreciate that embodiments of the application can be provided as methods, systems or computer program products. Accordingly, the application can take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the application can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROMs, optical storage devices, etc.) embodying computer-readable program code.

[0105] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart or flowsheet block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 one or more flowcharts and / or blocks

[0106] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart or flowsheet block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 one or more flowcharts and / or blocks

[0107] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart or flowsheet block or blocks. Figure 1 one or more flowcharts and / or blocks Figure 1 one or more flowcharts and / or blocks

[0108] Finally, it should be noted that the above-mentioned embodiments are merely intended for describing the technical solutions of the present application, but not for limiting it. Although the present application is described in detail with reference to the above embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or replacement without departing from the spirit and scope of the present application should be covered in the protection scope of the claims of the present application.

Claims

1. A length-identified guidewire device, characterized by, The detection box includes two opposite side walls, each of which is provided with an inlet and an outlet for the guide wire to enter and exit, and the inlet and the outlet are communicated through an arc-shaped detection channel, the detection channel includes an inlet channel, an intermediate channel and an outlet channel connected in sequence, the inlet channel and the outlet channel are straight channels, and the intermediate channel is an arc-shaped channel; the inner diameter of the detection channel matches the outer diameter of the guide wire; a scale for length identification is arranged on the surface of the guide wire; The inner wall of the detection channel is provided with a pressure sensor, the pressure sensor is electrically connected with a control host, and the resistance value borne by the guide wire during the advancement in the blood vessel is detected based on a real-time clock circuit, and the detected resistance value is transmitted to the control host through a time stamp record; a length detection device is arranged on the guide wire outlet side of the detection box and is electrically connected with the control host, the length detection device detects the used length information of the guide wire based on a real-time clock circuit, and transmits the detected used length information to the control host through a time stamp record; The control host judges whether the resistance borne by the guide wire during the advancement is abnormal through point-by-point comparison of continuous data sequences according to the resistance value and the used length information.

2. The length-identified guidewire device of claim 1, wherein, The control host further includes a collection unit, a processing unit, a judgment unit and a recording unit; The collection unit is used for collecting the used length information of the guide wire during the advancement based on the length detection device, collecting the resistance value of the guide wire based on the pressure sensor, and recording the used length information and the resistance value of the guide wire at each moment through a time stamp mode; The processing unit is used for synchronously processing the used length information and the resistance value according to the time stamp, determining that each resistance value corresponds to a group of used length information; and establishing corresponding data records for each resistance value and its corresponding used length information, forming a length-resistance data pair; and generating a length-resistance change curve; The judgment unit is used for performing point-by-point comparison between the real-time collected resistance value of the guide wire and the resistance threshold of its corresponding used length information; when the resistance value exceeds the resistance threshold of its corresponding used length information and the duration exceeds a time threshold, it is determined that the resistance is abnormal; The recording unit is used for recording the used length information, the resistance value and the occurrence time when the abnormality occurs, and generating an abnormal event log.

3. The length-identified guidewire device of claim 2, wherein, When the collection unit records the used length information and the resistance value of the guide wire at each moment through a time stamp mode, it includes: The collection unit obtains the used length information and the resistance value with a time stamp based on a real-time clock circuit; all used length information and resistance values with a time stamp enter independent data queue buffer areas respectively, and are collected and sorted; when the time stamp difference between adjacent two data is less than an upper limit of a sampling interval, it is determined that the state of effective continuous collection is valid, otherwise, a time abnormality detection mechanism is triggered and the clock synchronization is recalibrated.

4. The length-identified guidewire device of claim 3, wherein, When the processing unit synchronously processes the used length information and the resistance value according to the time stamp, it includes: The processing unit transmits the used length information and the resistance value through independent data channels to an input buffer respectively, compares the time stamps attached to the two sets of data respectively, and performs time matching with millisecond level precision; when the time stamp of a set of resistance values is within the time tolerance range of the time stamp of a certain used length information, it is determined that the data collected at the same time.

5. The length-identified guidewire device of claim 4, wherein, When the processing unit synchronizes the used length information and the resistance value according to the time stamp, it further includes: In the data matching process, if a certain resistance value cannot find corresponding time-matched used length information, the resistance value is temporarily stored and waits for the subsequent backfill matching of the retransmitted used length information; if a certain used length information does not correspond to any resistance value, an empty value mark is inserted at the corresponding position to maintain the integrity of the data sequence.

6. The length-identified guidewire device of claim 5, wherein, When the processing unit forms the length-resistance data pair by establishing a corresponding data record for each resistance value and its corresponding used length information, it includes: The processing unit assigns a unique data identifier to each set of matched used length information and resistance value; the data identifier includes a time stamp number, a sensor number and a length detection device number; the processing unit combines the used length information, the resistance value, the data identifier and the corresponding time stamp into a structured data record, and encapsulates it into the length-resistance data pair according to the data format; and arranges it into a continuous data sequence according to the collection time sequence.

7. The length-identified guidewire device of claim 6, wherein, When the processing unit generates the length-resistance change curve, it includes: The processing unit reads the used length information and the corresponding resistance value in each set of data from the continuous data sequence in sequence; takes each set of data as a coordinate point, where the used length information is taken as the horizontal axis parameter and the resistance value is taken as the vertical axis parameter, and determines the position in the display coordinate system point by point; The processing unit connects adjacent coordinate points in the order of data collection time to form a continuous polyline; the continuous polyline is taken as the length-resistance change curve.

8. The length-identified guidewire device of claim 7, wherein, When the judgment unit compares the resistance value of the real-time collected guide wire with the resistance threshold value of its corresponding used length information point by point, it includes: The judgment unit obtains the resistance threshold value corresponding to the current used length information from the threshold value database; the threshold value database divides multiple intervals according to the guide wire advancing length, and each interval is provided with a corresponding maximum allowed resistance threshold value; when the used length information is located between two intervals, the judgment unit determines the current applicable intermediate threshold value according to the resistance threshold values of the adjacent two intervals through interval matching algorithm; the judgment unit compares the current resistance value with the obtained corresponding resistance threshold value, if the current resistance value is greater than the corresponding resistance threshold value, it is marked as a to-be-confirmed abnormal point; the judgment unit continuously tracks the subsequent consecutive data points of the to-be-confirmed abnormal point, and counts the number of times and the duration of continuous exceeding of the resistance threshold value.

9. The length-identified guidewire device of claim 8, wherein, When the recording unit records the used length information, the resistance value and the occurrence time when the abnormality occurs, and generates the abnormal event log, it includes: When the judging unit determines that there is an abnormal resistance during the guide wire advancing process, an abnormal trigger signal is sent to the recording unit; the recording unit extracts the used length information, the resistance value and the time stamp attached as the occurrence time when the abnormality occurs from the latest length-resistance data pair; at the same time, the abnormal type identifier is obtained and recorded, which is divided into different levels according to the degree or duration of exceeding the threshold value; and combined into a complete abnormal event entry according to the log data format, and a unique event number is assigned.

10. A method for monitoring the resistance of a length-marked guidewire device, for use with a length-marked guidewire device according to any one of claims 1-9, characterized in that, Comprise: Based on the length detection device, the used length information during the guide wire advancing process is collected, and based on the pressure sensor, the resistance value of the guide wire is collected, and the used length information and the resistance value of the guide wire at each time are recorded by time stamp; According to the time stamp, the used length information and the resistance value are processed synchronously, and it is determined that each resistance value corresponds to a group of used length information; And each resistance value and its corresponding used length information establish corresponding data records to form a length-resistance data pair; and generate a length-resistance change curve; The real-time collected resistance value of the guide wire is compared with the resistance threshold value of its corresponding used length information point by point; when the resistance value exceeds the resistance threshold value of its corresponding used length information and the duration exceeds the time threshold value, it is determined that the resistance is abnormal; Record the used length information, resistance value and occurrence time when the abnormality occurs to generate an abnormal event log.

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