A cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction

Abstract

The present invention relates to a cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction, comprising the following steps: using a non-binary subtraction scoring method to score the compression depth and compression frequency of each cardiopulmonary resuscitation compression in a group of cardiopulmonary resuscitation compression processes, and obtaining a compression depth score and a compression frequency score for each cardiopulmonary resuscitation compression; based on the compression depth score and the compression frequency score of each cardiopulmonary resuscitation compression, selecting a preset evaluation system to perform an overall evaluation of the group of cardiopulmonary resuscitation compression processes. The present invention uses a non-binary subtraction scoring method to score the compression depth and compression frequency, starting from a fixed full score, and subtracting the corresponding score when the compression deviates from the standard. The greater the degree of deviation, the greater the deduction score, and vice versa. The present invention can provide a more detailed scoring for cardiopulmonary resuscitation compression, and a more realistic and more life-saving comprehensive evaluation of the compression operation performance.

Description

Technical Field

[0001] The invention relates to a cardiopulmonary resuscitation compression evaluation method, and in particular to a cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction. Background Art

[0002] Cardiopulmonary resuscitation refers to the most basic rescue method of maintaining artificial circulation and breathing of patients with cardiac arrest by hand and / or auxiliary equipment. It includes opening the airway, artificial ventilation, chest compression, etc. The purpose is to restore autonomous circulation as soon as possible and ultimately achieve survival with good brain and nerve function. Cardiopulmonary resuscitation is the cornerstone of rescuing the lives of patients with cardiac arrest. The survival of patients with cardiac arrest depends to a large extent on the effective implementation of high-quality cardiopulmonary resuscitation. The five elements of high-quality cardiopulmonary resuscitation: 1) The compression position is at the midpoint of the line connecting the two nipples; 2) The compression depth is 50-60mm; 3) The compression frequency is 100-120 times / minute, 4) The chest must rebound completely, and 5) Reduce compression interruptions (compression ratio CCF>60%).

[0003] Initially, the evaluation of CPR compressions was given through a strict pass / fail result. The examinee performed compressions on a traditional non-feedback CPR simulator, while the examiner observed and recorded. The examiner subjectively came up with a strict pass / fail result based on experience. Subjective experience evaluation depends on the examiner's experience, and different examiners can give completely different evaluations of the same CPR assessment.

[0004] With the popularization of feedback-type cardiopulmonary resuscitation simulators, the evaluation of cardiopulmonary resuscitation compression has entered the binary scoring stage, that is, a binary evaluation of qualified / unqualified is performed on each compression based on the data of compression feedback. Compressions that fully meet the elements of high-quality cardiopulmonary resuscitation are qualified, otherwise they are unqualified. However, the binary evaluation requirements are too harsh, and it is impossible to make detailed evaluations for compressions that do not meet the standards, and directly judge them as unqualified, which does not conform to the practical significance of cardiopulmonary resuscitation compressions. For example, empirical studies on compression frequency and cardiac arrest discharge survival rate show that the survival rate is the highest when the compression evaluation rate is in the range of 100-120 times / minute, but there is still a certain survival rate when it is lower than 100 or higher than 120, and it is inappropriate to simply judge that it is not unqualified. Similarly, empirical studies on compression depth and cardiac arrest discharge survival rate show that the survival rate is the highest when the compression depth is in the range of 40mm-60mm, but there is still a certain survival rate when it is lower than 40mm or higher than 60mm, and it is inappropriate to simply judge that it is not unqualified. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction, which can provide a more detailed score for cardiopulmonary resuscitation compression and a more realistic and life-saving comprehensive evaluation of compression operation performance.

[0006] The technical solution of the present invention to solve the above technical problem is as follows: a cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction comprises the following steps:

[0007] S1, using a non-binary subtraction scoring method to score the compression depth and compression frequency of each cardiopulmonary resuscitation compression during a group of cardiopulmonary resuscitation compressions, to obtain the compression depth score and compression frequency score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions;

[0008] S2, based on the compression depth score and compression frequency score of each cardiopulmonary resuscitation compression process of the group, select a preset evaluation system to perform an overall evaluation of the group of cardiopulmonary resuscitation compression processes.

[0009] Based on the above technical solution, the present invention can also be improved as follows.

[0010] Further, in S1, the process of scoring the compression depth of each cardiopulmonary resuscitation compression during a set of cardiopulmonary resuscitation compressions is as follows:

[0011] The starting depth and maximum depth of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions are recorded by an ultrasonic sensor;

[0012] The starting depth and maximum depth of each recorded cardiopulmonary resuscitation compression are processed to obtain the compression depth of each cardiopulmonary resuscitation compression;

[0013] The compression depth of each CPR compression is scored according to the pre-set compression depth-compression depth score correspondence;

[0014] Among them, the compression depth-compression depth score correspondence is specifically that the compression depth score corresponding to the preset standard compression depth range is given a full score; when there is a deviation between the compression depth and the standard compression depth range, the preset score is subtracted from the full score as the compression depth score of this cardiopulmonary resuscitation compression; and the greater the deviation between the compression depth and the standard compression depth range, the greater the preset score that is subtracted.

[0015] Further, in S1, the process of scoring the compression frequency of each cardiopulmonary resuscitation compression during a group of cardiopulmonary resuscitation compressions is as follows:

[0016] The ultrasonic sensor is used to record the starting time and the ending time of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions;

[0017] The starting time and the ending time of each cardiopulmonary resuscitation compression are subtracted to obtain the compression time of each cardiopulmonary resuscitation compression;

[0018] According to the pre-set compression time-compression frequency score correspondence, the compression frequency of each CPR compression is scored;

[0019] Among them, the corresponding relationship between the compression time and the compression frequency score is specifically that the compression frequency score corresponding to the preset standard compression time range is given a full score; when there is a deviation between the compression time and the standard compression time range, the preset score is subtracted from the full score as the compression frequency score of this cardiopulmonary resuscitation compression; and the greater the deviation between the compression time and the standard compression time range, the greater the preset score that is subtracted.

[0020] Furthermore, the S1 further comprises the following steps:

[0021] The starting time of the first cardiopulmonary resuscitation compression and the ending time of the last cardiopulmonary resuscitation compression in the group of cardiopulmonary resuscitation compressions are recorded by an ultrasonic sensor, and the starting time of the first cardiopulmonary resuscitation compression and the ending time of the last cardiopulmonary resuscitation compression in the group of cardiopulmonary resuscitation compressions are processed by difference to obtain the total compression time of the group of cardiopulmonary resuscitation compressions;

[0022] According to the preset corresponding relationship between total compression time and total compression time coefficient, the total compression time of the cardiopulmonary resuscitation compression process of the group is assigned a corresponding total compression time coefficient;

[0023] Among them, the corresponding relationship between the total compression time and the total compression time coefficient is specifically that the total compression time coefficient corresponding to the preset standard total compression time range is assigned to the standard coefficient; when there is a deviation between the total compression time and the standard total compression time range, the preset value is subtracted from the standard coefficient as the total compression time coefficient of the group of cardiopulmonary resuscitation compression processes; and the greater the deviation between the total compression time and the standard total compression time range, the greater the preset value that is subtracted.

[0024] Furthermore, in S2, the preset evaluation system is specifically an evaluation system based on a compression depth score, a compression frequency score, and a compression total duration coefficient; then S2 is specifically,

[0025] According to the compression depth score and compression frequency score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions, the score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is calculated; wherein, the formula for calculating the score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is,

[0026]

[0027] Specifically, A i is the score of the i-th cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of this group, P iis the compression frequency score of the i-th cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of this group, S i is the compression depth score of the i-th cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression process of this group;

[0028] The average score of all cardiopulmonary resuscitation compressions during the cardiopulmonary resuscitation compressions of the group was processed, and the average score of the cardiopulmonary resuscitation compressions during the cardiopulmonary resuscitation compressions of the group was obtained;

[0029] The average cardiopulmonary resuscitation compression score of the group of cardiopulmonary resuscitation compression processes is multiplied by the total compression duration coefficient corresponding to the total compression duration of the group of cardiopulmonary resuscitation compression processes to obtain an overall evaluation of the group of cardiopulmonary resuscitation compression processes.

[0030] Furthermore, the S1 further comprises the following steps:

[0031] The compression position and rebound of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of the group were scored respectively, and the compression position score and rebound score of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of the group were obtained accordingly;

[0032] The compression ratio of the cardiopulmonary resuscitation compression process of the group is scored to obtain the compression ratio score of the cardiopulmonary resuscitation compression process of the group.

[0033] Furthermore, the process of scoring the compression position of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of the group is as follows:

[0034] During the group of cardiopulmonary resuscitation compressions, at the starting point of each cardiopulmonary resuscitation compression, the pressure value of each cardiopulmonary resuscitation compression is recorded by a pressure sensor;

[0035] If the pressure value recorded once is within the preset pressure threshold range, the compression position score of this CPR compression will be given full marks;

[0036] If the pressure value recorded at a time is not within the preset pressure threshold range, the compression position score of the cardiopulmonary resuscitation compression will be assigned zero points.

[0037] Furthermore, the process of scoring the rebound of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of this group is as follows:

[0038] The compression depth corresponding to the end point of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is recorded by an ultrasonic sensor;

[0039] If the compression depth recorded in a session is within the preset depth threshold, the rebound score of the CPR compression will be given full marks;

[0040] If the pressure value recorded at a time is not within the preset depth threshold range, the rebound score of the CPR compression will be assigned zero points.

[0041] Furthermore, the process of scoring the compression ratio of the cardiopulmonary resuscitation compression process of this group is as follows:

[0042] The ultrasonic sensor is used to record the starting time and the ending time of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions;

[0043] According to the start time and end time of each cardiopulmonary resuscitation compression recorded by the ultrasonic sensor, the compression time interval between each two adjacent cardiopulmonary resuscitation compressions is calculated, and according to the compression time interval between each two adjacent cardiopulmonary resuscitation compressions, the total compression time interval in the group of cardiopulmonary resuscitation compressions is calculated;

[0044] Calculate the total duration of the cardiopulmonary resuscitation compressions in the group of cardiopulmonary resuscitation compressions according to the starting time of the first cardiopulmonary resuscitation compression and the ending time of the last cardiopulmonary resuscitation compression in the group of cardiopulmonary resuscitation compressions recorded by the ultrasonic sensor;

[0045] The compression ratio of the cardiopulmonary resuscitation compression process of the group is calculated according to the total compression time interval and the total compression time in the cardiopulmonary resuscitation compression process of the group; wherein the formula for calculating the compression ratio of the cardiopulmonary resuscitation compression process of the group is, CCF=(ZT) / Z; specifically, CCF is the compression ratio of the cardiopulmonary resuscitation compression process of the group, Z is the total compression time in the cardiopulmonary resuscitation compression process of the group, and T is the total compression time interval in the cardiopulmonary resuscitation compression process of the group;

[0046] If the compression ratio of the cardiopulmonary resuscitation compression process is within the preset compression ratio range, the compression ratio of the cardiopulmonary resuscitation compression process is used as the compression ratio score of the cardiopulmonary resuscitation compression process;

[0047] If the compression ratio of the cardiopulmonary resuscitation compression process is not within the preset compression ratio range, the compression ratio score of the cardiopulmonary resuscitation compression process is assigned zero points.

[0048] Further, in S2, the preset evaluation system is specifically an evaluation system based on a compression depth score, a compression frequency score, a compression position score, a rebound score, and a compression ratio score; then S2 is specifically,

[0049] The compression depth scores, compression frequency scores, compression position scores, and rebound scores of all cardiopulmonary resuscitation compressions during the cardiopulmonary resuscitation compression process of the group were averaged to obtain the average compression depth score, compression frequency score, compression position score, and rebound score of the cardiopulmonary resuscitation compression process of the group;

[0050] According to the barrel theory, the minimum score among the average compression depth score, average compression frequency score, average compression position score, average rebound score and compression ratio score of the group's cardiopulmonary resuscitation compression process was selected as the overall evaluation of the group's cardiopulmonary resuscitation compression process.

[0051] The beneficial effect of the present invention is that in a cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction of the present invention, a non-binary subtraction scoring method is used to score the compression depth and compression frequency, starting from a fixed full score, when the compression deviates from the standard, the corresponding score is subtracted, if the compression is within the standard threshold range, the score will always be full score, if there is a deviation, the score will be deducted accordingly, the greater the degree of deviation, the greater the deduction score, and vice versa; therefore, the cardiopulmonary resuscitation compression evaluation method of the present invention can provide more detailed scoring for cardiopulmonary resuscitation compression, and a more realistic and comprehensive evaluation of compression operation performance that can better achieve life-saving goals. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A flowchart of a cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction of the present invention;

[0053] Figure 2 The following is a coordinate diagram of the compression depth score of student A in the example;

[0054] Figure 3 This is the compression depth score coordinate diagram of student B in the example;

[0055] Figure 4 A time-depth curve for CPR compressions;

[0056] Figure 5 for Figure 4 A partial schematic diagram of . DETAILED DESCRIPTION

[0057] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0058] like Figure 1 As shown, a cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction includes the following steps:

[0059] S1, using a non-binary subtraction scoring method to score the compression depth and compression frequency of each cardiopulmonary resuscitation compression during a group of cardiopulmonary resuscitation compressions, to obtain the compression depth score and compression frequency score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions;

[0060] S2, based on the compression depth score and compression frequency score of each cardiopulmonary resuscitation compression process of the group, select a preset evaluation system to perform an overall evaluation of the group of cardiopulmonary resuscitation compression processes.

[0061] Specifically: In S1, the process of scoring the compression depth of each cardiopulmonary resuscitation compression during a group of cardiopulmonary resuscitation compressions is as follows:

[0062] The starting depth and maximum depth of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions are recorded by an ultrasonic sensor;

[0063] The starting depth and maximum depth of each recorded cardiopulmonary resuscitation compression are processed to obtain the compression depth of each cardiopulmonary resuscitation compression;

[0064] The compression depth of each CPR compression is scored according to the pre-set compression depth-compression depth score correspondence;

[0065] The compression depth-compression depth score correspondence relationship is specifically that the compression depth score corresponding to the preset standard compression depth range is given a full score; when there is a deviation between the compression depth and the standard compression depth range, the preset score is subtracted from the full score as the compression depth score of this cardiopulmonary resuscitation compression; and the greater the deviation between the compression depth and the standard compression depth range, the greater the preset score subtracted. The compression depth-compression depth score correspondence relationship is specifically shown in the following Table 1:

[0066] Table 1: Compression depth-compression depth score correspondence table

[0067]

[0068] Specifically: In S1, the process of scoring the compression frequency of each cardiopulmonary resuscitation compression during a group of cardiopulmonary resuscitation compressions is as follows:

[0069] The ultrasonic sensor is used to record the starting time and the ending time of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions;

[0070] The starting time and the ending time of each cardiopulmonary resuscitation compression are subtracted to obtain the compression time of each cardiopulmonary resuscitation compression;

[0071] According to the pre-set compression time-compression frequency score correspondence, the compression frequency of each CPR compression is scored;

[0072] The compression time-compression frequency score correspondence is specifically that the compression frequency score corresponding to the preset standard compression time range is given a full score; when there is a deviation between the compression time and the standard compression time range, the preset score is subtracted from the full score as the compression frequency score of this cardiopulmonary resuscitation compression; and the greater the deviation between the compression time and the standard compression time range, the greater the preset score subtracted. The compression time-compression frequency score correspondence is specifically shown in Table 2 below:

[0073] Table 2: Correspondence table of pressing time and pressing frequency score

[0074]

[0075] In the present invention, the non-binary subtraction scoring method is: starting from a fixed full score, when the pressing deviates from the standard, the corresponding score is subtracted. If the pressing is within the standard threshold range, the score will always be full score. If there is a deviation, the score will be deducted accordingly. The greater the deviation, the greater the deduction, and vice versa.

[0076] To put it simply, when both the compression depths of 49 mm and 25 mm exceed the compression depth threshold of high-quality cardiopulmonary resuscitation elements, the compression depth of 49 mm is undoubtedly a more ideal performance, and the algorithm of the present invention can accurately express it.

[0077] For example, suppose two students each performed 10 CPR compressions. Five of the compressions were within the standard range of 50-60 mm, and five were outside the standard range. Figure 2 and Figure 3 As shown in the figure, according to the traditional binary algorithm, the compression depth scores of students A and B are both 50 points, and the actual compression effects of the two students A and B cannot be distinguished. According to the non-binary subtraction scoring method of the present invention, student A deviates far from the standard, and his score is 50+3+4+5+6+7=75; student B deviates closely from the standard, and his score is 50+8+8+9+9+9=93. The binary subtraction scoring method of the present invention can well distinguish the actual difference between the two students.

[0078] In the present invention, the method for defining a CPR compression process is: recording the depth data and the receiving data time transmitted by the ultrasonic sensor each time (depth data is received approximately every 0.015 seconds), and drawing a time-depth curve of CPR compression, such as Figure 4 shown.

[0079] The starting point of a CPR compression: After the compression begins, the depth gradually increases, and the first point where the depth exceeds 2 cm is recorded ( Figure 5C1 in the figure), starting from this point, trace back to the starting point of this depth drop; compare the depth value of each point in turn, if the depth of the traced point is greater than the current point depth, continue to trace back a point for comparison until the depth of the current point is greater than or equal to the depth of the traced point, that is, the current point is the starting point of this pressing, such as Figure 5 The time corresponding to point S in the diagram is the starting point of this cardiopulmonary resuscitation compression.

[0080] The end point of a CPR compression: As the compression continues to press down and rebound, the received depth increases from small to large and then decreases. The first point where the depth is less than 2 cm during the process of decreasing depth is recorded ( Figure 5 Starting from this point, the depth of the current point is compared with the depth of the next data point received. If the depth of the current point is less than or equal to the depth of the next data point, the current point is recorded as the end point of this press ( Figure 5 point F in the figure).

[0081] Embodiment 1:

[0082] The S1 further comprises the following steps:

[0083] The starting time of the first cardiopulmonary resuscitation compression and the ending time of the last cardiopulmonary resuscitation compression in the group of cardiopulmonary resuscitation compressions are recorded by an ultrasonic sensor, and the starting time of the first cardiopulmonary resuscitation compression and the ending time of the last cardiopulmonary resuscitation compression in the group of cardiopulmonary resuscitation compressions are processed by difference to obtain the total compression time of the group of cardiopulmonary resuscitation compressions;

[0084] According to the preset corresponding relationship between total compression time and total compression time coefficient, the total compression time of the cardiopulmonary resuscitation compression process of the group is assigned a corresponding total compression time coefficient;

[0085] Among them, the corresponding relationship between the total compression time and the total compression time coefficient is specifically that the total compression time coefficient corresponding to the preset standard total compression time range is assigned to the standard coefficient; when there is a deviation between the total compression time and the standard total compression time range, the preset value is subtracted from the standard coefficient as the total compression time coefficient of the group of cardiopulmonary resuscitation compression processes; and the greater the deviation between the total compression time and the standard total compression time range, the greater the preset value that is subtracted.

[0086] In S2, the preset evaluation system is specifically an evaluation system based on the compression depth score, the compression frequency score and the total compression duration coefficient; then S2 is specifically,

[0087] According to the compression depth score and compression frequency score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions, the score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is calculated; wherein, the formula for calculating the score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is,

[0088]

[0089] Specifically, A i is the score of the i-th cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of this group, P i is the compression frequency score of the i-th cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of this group, S i is the compression depth score of the i-th cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression process of this group;

[0090] The average score of all cardiopulmonary resuscitation compressions during the cardiopulmonary resuscitation compressions of the group was processed, and the average score of the cardiopulmonary resuscitation compressions during the cardiopulmonary resuscitation compressions of the group was obtained;

[0091] The average cardiopulmonary resuscitation compression score of the group of cardiopulmonary resuscitation compression processes is multiplied by the total compression duration coefficient corresponding to the total compression duration of the group of cardiopulmonary resuscitation compression processes to obtain an overall evaluation of the group of cardiopulmonary resuscitation compression processes.

[0092] Embodiment 2:

[0093] The S1 further comprises the following steps:

[0094] The compression position and rebound of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of the group were scored respectively, and the compression position score and rebound score of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of the group were obtained accordingly;

[0095] The compression ratio of the cardiopulmonary resuscitation compression process of the group is scored to obtain the compression ratio score of the cardiopulmonary resuscitation compression process of the group.

[0096] Specifically, the process of scoring the compression position of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of the group is as follows:

[0097] During the group of cardiopulmonary resuscitation compressions, at the starting point of each cardiopulmonary resuscitation compression, the pressure value of each cardiopulmonary resuscitation compression is recorded by a pressure sensor;

[0098] If the pressure value recorded once is within the preset pressure threshold range, the compression position score of this CPR compression will be given full marks;

[0099] If the pressure value recorded at a time is not within the preset pressure threshold range, the compression position score of the cardiopulmonary resuscitation compression will be assigned zero points.

[0100] For example: if the pressure value is within the preset pressure threshold range, then the pressing position score p=1 (ie, the pressing position is correct), otherwise p=0 (ie, the pressing position is incorrect).

[0101] Specifically: The process of scoring the rebound of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of this group is as follows:

[0102] The compression depth corresponding to the end point of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is recorded by an ultrasonic sensor;

[0103] If the compression depth recorded in a session is within the preset depth threshold, the rebound score of the CPR compression will be given full marks;

[0104] If the pressure value recorded at a time is not within the preset depth threshold range, the rebound score of the CPR compression will be assigned zero points.

[0105] For example: if the pressing depth value g at the end point is less than 10 mm, the pressing will rebound and the rebound score b=1 (i.e., the rebound is correct); if g≥10 mm, b=0 (i.e., the rebound is wrong).

[0106] Specifically: The process of scoring the compression ratio of the cardiopulmonary resuscitation compression process of this group is as follows:

[0107] The ultrasonic sensor is used to record the starting time and the ending time of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions;

[0108] According to the start time and end time of each cardiopulmonary resuscitation compression recorded by the ultrasonic sensor, the compression time interval between each two adjacent cardiopulmonary resuscitation compressions is calculated, and according to the compression time interval between each two adjacent cardiopulmonary resuscitation compressions, the total compression time interval in the group of cardiopulmonary resuscitation compressions is calculated;

[0109] Calculate the total duration of the cardiopulmonary resuscitation compressions in the group of cardiopulmonary resuscitation compressions according to the starting time of the first cardiopulmonary resuscitation compression and the ending time of the last cardiopulmonary resuscitation compression in the group of cardiopulmonary resuscitation compressions recorded by the ultrasonic sensor;

[0110] The compression ratio of the cardiopulmonary resuscitation compression process of the group is calculated according to the total compression time interval and the total compression time in the cardiopulmonary resuscitation compression process of the group; wherein the formula for calculating the compression ratio of the cardiopulmonary resuscitation compression process of the group is, CCF=(ZT) / Z; specifically, CCF is the compression ratio of the cardiopulmonary resuscitation compression process of the group, Z is the total compression time in the cardiopulmonary resuscitation compression process of the group, and T is the total compression time interval in the cardiopulmonary resuscitation compression process of the group;

[0111] If the compression ratio of the cardiopulmonary resuscitation compression process is within the preset compression ratio range, the compression ratio of the cardiopulmonary resuscitation compression process is used as the compression ratio score of the cardiopulmonary resuscitation compression process;

[0112] If the compression ratio of the cardiopulmonary resuscitation compression process is not within the preset compression ratio range, the compression ratio score of the cardiopulmonary resuscitation compression process is assigned zero points.

[0113] For example, the calculation formula for the compression ratio score is: Among them, C is the compression ratio score.

[0114] In S2, the preset evaluation system is specifically an evaluation system based on a compression depth score, a compression frequency score, a compression position score, a rebound score, and a compression ratio score; then S2 is specifically,

[0115] The compression depth scores, compression frequency scores, compression position scores, and rebound scores of all cardiopulmonary resuscitation compressions during the cardiopulmonary resuscitation compression process of the group were averaged to obtain the average compression depth score, compression frequency score, compression position score, and rebound score of the cardiopulmonary resuscitation compression process of the group;

[0116] According to the barrel theory, the minimum score among the average compression depth score, average compression frequency score, average compression position score, average rebound score and compression ratio score of the group's cardiopulmonary resuscitation compression process was selected as the overall evaluation of the group's cardiopulmonary resuscitation compression process.

[0117] In both the first and second embodiments, the final scores can be scored in percentage.

[0118] In a cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction of the present invention, a non-binary subtraction scoring method is used to score the compression depth and compression frequency, starting from a fixed full score, when the compression deviates from the standard, the corresponding score is subtracted. If the compression is within the standard threshold range, the score will always be full score. If there is a deviation, the score will be deducted accordingly. The greater the degree of deviation, the greater the deduction score, and vice versa. The deduction score is smaller; therefore, the cardiopulmonary resuscitation compression evaluation method of the present invention can provide more detailed scoring for cardiopulmonary resuscitation compression, and a more realistic and comprehensive evaluation of compression operation performance that can better achieve life-saving goals.

[0119] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction, characterized in that: The following steps are included: S1, a non-binary subtraction scoring method was used to score the compression depth and compression frequency of each cardiopulmonary resuscitation compression during a group of cardiopulmonary resuscitation compressions. Starting from the full score, when the compression deviated from the standard, the corresponding score was subtracted. The greater the deviation, the greater the deduction. The compression depth score and compression frequency score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions were obtained; S2, based on the compression depth score and compression frequency score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions, select a preset evaluation system to conduct an overall evaluation of the group of cardiopulmonary resuscitation compressions; In S2, the preset evaluation system is specifically an evaluation system based on the compression depth score, the compression frequency score and the total compression duration coefficient; then S2 is specifically, According to the compression depth score and compression frequency score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions, the score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is calculated; wherein, the formula for calculating the score of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is, ； Specifically, The first CPR compression score, The first Compression rate score per CPR compression, The first Compression depth score per CPR compression; The average score of all cardiopulmonary resuscitation compressions during the cardiopulmonary resuscitation compressions of the group was processed, and the average score of the cardiopulmonary resuscitation compressions during the cardiopulmonary resuscitation compressions of the group was obtained; The average cardiopulmonary resuscitation compression score of the group of cardiopulmonary resuscitation compression processes is multiplied by the total compression duration coefficient corresponding to the total compression duration of the group of cardiopulmonary resuscitation compression processes to obtain an overall evaluation of the group of cardiopulmonary resuscitation compression processes.

2. The cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction according to claim 1, characterized in that: In S1, the process of scoring the compression depth of each cardiopulmonary resuscitation compression during a set of cardiopulmonary resuscitation compressions is as follows: The starting depth and maximum depth of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions are recorded by an ultrasonic sensor; The starting depth and maximum depth of each recorded cardiopulmonary resuscitation compression are processed to obtain the compression depth of each cardiopulmonary resuscitation compression; The compression depth of each CPR compression is scored according to the pre-set compression depth-compression depth score correspondence; Among them, the compression depth-compression depth score correspondence is specifically that the compression depth score corresponding to the preset standard compression depth range is given a full score; when there is a deviation between the compression depth and the standard compression depth range, the preset score is subtracted from the full score as the compression depth score of this cardiopulmonary resuscitation compression; and the greater the deviation between the compression depth and the standard compression depth range, the greater the preset score that is subtracted.

3. The cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction according to claim 1, characterized in that: In S1, the process of scoring the compression frequency of each cardiopulmonary resuscitation compression during a group of cardiopulmonary resuscitation compressions is as follows: The ultrasonic sensor is used to record the starting time and the ending time of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions; The starting time and the ending time of each cardiopulmonary resuscitation compression are subtracted to obtain the compression time of each cardiopulmonary resuscitation compression; According to the pre-set compression time-compression frequency score correspondence, the compression frequency of each CPR compression is scored; Among them, the corresponding relationship between the compression time and the compression frequency score is specifically that the compression frequency score corresponding to the preset standard compression time range is given a full score; when there is a deviation between the compression time and the standard compression time range, the preset score is subtracted from the full score as the compression frequency score of this cardiopulmonary resuscitation compression; and the greater the deviation between the compression time and the standard compression time range, the greater the preset score that is subtracted.

4. The cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction according to any one of claims 1 to 3, characterized in that: The S1 further comprises the following steps: The starting time of the first cardiopulmonary resuscitation compression and the ending time of the last cardiopulmonary resuscitation compression in the group of cardiopulmonary resuscitation compressions are recorded by an ultrasonic sensor, and the starting time of the first cardiopulmonary resuscitation compression and the ending time of the last cardiopulmonary resuscitation compression in the group of cardiopulmonary resuscitation compressions are processed by difference to obtain the total compression time of the group of cardiopulmonary resuscitation compressions; According to the preset corresponding relationship between total compression time and total compression time coefficient, the total compression time of the cardiopulmonary resuscitation compression process of the group is assigned a corresponding total compression time coefficient; Among them, the corresponding relationship between the total compression time and the total compression time coefficient is specifically that the total compression time coefficient corresponding to the preset standard total compression time range is assigned to the standard coefficient; when there is a deviation between the total compression time and the standard total compression time range, the preset value is subtracted from the standard coefficient as the total compression time coefficient of the group of cardiopulmonary resuscitation compression processes; and the greater the deviation between the total compression time and the standard total compression time range, the greater the preset value that is subtracted.

5. The cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction according to any one of claims 1 to 3, characterized in that: The S1 further comprises the following steps: The compression position and rebound of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of the group were scored respectively, and the compression position score and rebound score of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of the group were obtained accordingly; The compression ratio of the cardiopulmonary resuscitation compression process of the group is scored to obtain the compression ratio score of the cardiopulmonary resuscitation compression process of the group.

6. The cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction according to claim 5, characterized in that: The process of scoring the compression position of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is as follows: During the group of cardiopulmonary resuscitation compressions, at the starting point of each cardiopulmonary resuscitation compression, the pressure value of each cardiopulmonary resuscitation compression is recorded by a pressure sensor; If the pressure value recorded once is within the preset pressure threshold range, the compression position score of this CPR compression will be given full marks; If the pressure value recorded at a time is not within the preset pressure threshold range, the compression position score of the cardiopulmonary resuscitation compression will be assigned zero points.

7. The cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction according to claim 5, characterized in that: The process of scoring the rebound of each cardiopulmonary resuscitation compression during the cardiopulmonary resuscitation compression of this group is as follows: The compression depth corresponding to the end point of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions is recorded by an ultrasonic sensor; If the compression depth recorded in a session is within the preset depth threshold, the rebound score of the CPR compression will be given full marks; If the pressure value recorded at a time is not within the preset depth threshold range, the rebound score of the CPR compression will be assigned zero points.

8. The cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction according to claim 5, characterized in that: The process of scoring the compression ratio of the cardiopulmonary resuscitation compression process of this group is as follows: The ultrasonic sensor is used to record the starting time and the ending time of each cardiopulmonary resuscitation compression during the group of cardiopulmonary resuscitation compressions; According to the start time and end time of each cardiopulmonary resuscitation compression recorded by the ultrasonic sensor, the compression time interval between each two adjacent cardiopulmonary resuscitation compressions is calculated, and according to the compression time interval between each two adjacent cardiopulmonary resuscitation compressions, the total compression time interval in the group of cardiopulmonary resuscitation compressions is calculated; Calculate the total duration of the cardiopulmonary resuscitation compressions in the group of cardiopulmonary resuscitation compressions according to the starting time of the first cardiopulmonary resuscitation compression and the ending time of the last cardiopulmonary resuscitation compression in the group of cardiopulmonary resuscitation compressions recorded by the ultrasonic sensor; The compression ratio of the cardiopulmonary resuscitation compression process is calculated according to the total compression time interval and the total compression duration in the cardiopulmonary resuscitation compression process; wherein, the formula for calculating the compression ratio of the cardiopulmonary resuscitation compression process is, ; Specifically, is the compression ratio of the cardiopulmonary resuscitation compression process of this group, is the total compression duration during the CPR compression process of this group, It is the total compression time interval during the cardiopulmonary resuscitation compression process of this group; If the compression ratio of the cardiopulmonary resuscitation compression process is within the preset compression ratio range, the compression ratio of the cardiopulmonary resuscitation compression process is used as the compression ratio score of the cardiopulmonary resuscitation compression process; If the compression ratio of the cardiopulmonary resuscitation compression process is not within the preset compression ratio range, the compression ratio score of the cardiopulmonary resuscitation compression process is assigned zero points.

9. The cardiopulmonary resuscitation compression evaluation method based on non-binary subtraction according to claim 5, characterized in that: In S2, the preset evaluation system is specifically an evaluation system based on a compression depth score, a compression frequency score, a compression position score, a rebound score, and a compression ratio score; then S2 is specifically, The compression depth scores, compression frequency scores, compression position scores, and rebound scores of all cardiopulmonary resuscitation compressions during the cardiopulmonary resuscitation compression process of the group were averaged to obtain the average compression depth score, compression frequency score, compression position score, and rebound score of the cardiopulmonary resuscitation compression process of the group; According to the barrel theory, the minimum score among the average compression depth score, average compression frequency score, average compression position score, average rebound score and compression ratio score of the group's cardiopulmonary resuscitation compression process was selected as the overall evaluation of the group's cardiopulmonary resuscitation compression process.

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