CN114126691A - Pressure generating device identification method and system, ventilation support device, and storage medium - Google Patents
Pressure generating device identification method and system, ventilation support device, and storage medium Download PDFInfo
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Abstract
A pressure generating device identification method is applied to a ventilation support device and comprises the following steps: measuring the air inlet pressure of the pressure generating device through a pressure detecting device, and measuring the air inlet flow rate of the pressure generating device through a flow detecting device; determining a current corresponding relationship between the intake pressure and the intake flow rate; the current correspondence is compared to the stored at least one standard correspondence to identify the type of pressure generating device.
Description
The embodiment of the invention relates to the technical field of medical equipment, in particular to a pressure generating device identification method and system, ventilation support equipment and a storage medium.
Currently, clinically used noninvasive ventilators mainly include a single tube and a double tube. The single-tube respirator can generate a certain flow rate of gas to flow through the pressure generating device, so that the near-nose pressure is generated. The different types of pressure generating devices have different structural characteristics, and the corresponding relationship between the flow rate and the pressure is different. The healthcare worker selects the appropriate pressure generating device type to support ventilation for the patient's needs. The wrong type of the pressure generating device can cause the pressure at the near nose end not to reach the preset state, thereby influencing the ventilation effect of the patient and even having potential safety hazard.
The existing partial breathing machine can be used by medical staff to select the type of the pressure generating device, but the problems that the types of the pressure generating devices are more and the medical staff can select the wrong type still exist. In addition, there is a method for identifying the type of the pressure generating device according to the correspondence relationship between the pressure at the inlet end, the pressure near the nose end, and the flow rate of the gas flowing through the pressure generating device in the prior art. However, nasal leaks are very common because clinically nasal plugs or nasal masks cannot be matched perfectly with the patient. Under the condition that the nose end leaks or the pipeline leaks, the pressure at the near nose end often has great deviation, so that the type identification of the pressure generating device is inaccurate.
Disclosure of Invention
In order to solve the above technical problems, embodiments of the present invention desirably provide a method and a system for identifying a pressure generating device, a ventilatory support apparatus, and a storage medium, in which the type of the pressure generating device is identified by using a correspondence between an intake pressure of the pressure generating device, which is not affected by leakage, and an intake flow rate flowing through the pressure generating device, thereby improving accuracy of identifying the type of the pressure generating device.
The technical scheme of the embodiment of the invention can be realized as follows:
an embodiment of the present invention provides a ventilation support apparatus for providing respiratory support to a patient via a pressure generating device, the ventilation support apparatus comprising: the pressure generating device comprises a pressure generating device identification system, an air source interface, a ventilation control unit and a breathing loop;
the breathing circuit is connected with the gas source interface, the ventilation control unit and the pressure generating device, and the gas provided by the gas source interface is conveyed to a patient through the breathing circuit and the pressure generating device under the control of the ventilation control unit;
the pressure generating device identification system includes: the device comprises a pressure detection device, a flow detection device and a recognition device;
the pressure detection device is used for measuring the air inlet pressure of the pressure generation device;
the flow detection device measures the air inlet flow speed of the pressure generation device;
the identification device is connected with the pressure detection device and the flow detection device, and the identification device realizes the following steps:
determining a current correspondence between the intake pressure and the intake flow rate;
comparing the current correspondence with at least one stored standard correspondence, and identifying the type of the pressure generating device.
In the above ventilation support apparatus, the identification means is further connected to the ventilation control unit,
the identification device controls the gas pressure or the gas flow rate output by the breathing circuit through the ventilation control unit.
The embodiment of the invention provides a pressure generating device identification system, which is applied to ventilation support equipment and comprises: the flow rate detection device is connected with the pressure detection device;
the pressure detection device is used for measuring the air inlet pressure of the pressure generation device;
the flow detection device measures the air inlet flow speed of the pressure generation device;
the identification device realizes the following steps:
determining a current correspondence between the intake pressure and the intake flow rate;
comparing the current correspondence with at least one stored standard correspondence, and identifying the type of the pressure generating device.
In the above system, the step of comparing the current correspondence with at least one stored standard correspondence, and the step of identifying the type of the pressure generating device by the identifying means, which is performed by the identifying means, includes:
determining a corresponding target interval according to the air inlet pressure or the air inlet flow speed;
selecting at least one part of standard corresponding relations corresponding to the target interval from the at least one standard corresponding relation respectively;
and comparing the current corresponding relation with the at least one part of standard corresponding relation respectively to identify the type of the pressure generating device.
In the above system, the step of comparing the current correspondence with the at least one part of standard correspondence, and the step of identifying the type of the pressure generating device by the identifying means includes:
determining a standard corresponding relation with the maximum similarity with the current corresponding relation from the at least one part of standard corresponding relations;
and determining the type of the pressure generating device corresponding to the stored standard corresponding relation with the maximum similarity as the type of the pressure generating device.
In the above system, the identifying means, after identifying the type of the pressure generating means, further performs the steps of:
based on the recognized type of the pressure generating device, determining a target air inlet flow rate according to the stored corresponding relation between the near-nose end pressure corresponding to the type of the pressure generating device and the air inlet flow rate and the set target near-nose end pressure;
outputting the target intake air flow rate to the ventilation support device.
In the above system, the identifying means, after identifying the type of the pressure generating means, further performs the steps of:
comparing the identified pressure generating device type with a preset pressure generating device type;
and under the condition that the recognized type of the pressure generating device is different from the type of the preset pressure generating device, outputting alarm prompt information.
The embodiment of the invention provides a pressure generation device identification method, which is applied to ventilation support equipment and comprises the following steps:
measuring the air inlet pressure of a pressure generating device through a pressure detecting device, and measuring the air inlet flow speed of the pressure generating device through a flow detecting device;
determining a current correspondence between the intake pressure and the intake flow rate;
comparing the current correspondence with at least one stored standard correspondence, and identifying the type of the pressure generating device.
In the above method, the identifying the type of the pressure generating device by comparing the current correspondence with at least one stored standard correspondence includes:
determining a corresponding target interval according to the air inlet pressure or the air inlet flow speed;
selecting at least one part of standard corresponding relations corresponding to the target interval from the at least one standard corresponding relation respectively;
and comparing the current corresponding relation with the at least one part of standard corresponding relation respectively to identify the type of the pressure generating device.
In the above method, the comparing the current correspondence with the at least one part of standard correspondence respectively to identify the type of the pressure generating device includes:
determining a standard corresponding relation with the maximum similarity with the current corresponding relation from the at least one part of standard corresponding relations;
and determining the type of the pressure generating device corresponding to the stored standard corresponding relation with the maximum similarity as the type of the pressure generating device.
In the above method, after the identifying the type of the pressure generating device, the method further comprises:
based on the recognized type of the pressure generating device, determining a target air inlet flow rate according to the stored corresponding relation between the near-nose end pressure corresponding to the type of the pressure generating device and the air inlet flow rate and the set target near-nose end pressure;
outputting the target intake air flow rate to the ventilation support device.
In the above method, after the identifying the type of the pressure generating device, the method further comprises:
comparing the identified pressure generating device type with a preset pressure generating device type;
and under the condition that the recognized type of the pressure generating device is different from the type of the preset pressure generating device, outputting alarm prompt information.
An embodiment of the present invention provides a computer-readable storage medium storing a pressure generating apparatus identification program that can be executed by an identification apparatus to implement the above pressure generating apparatus identification method.
The embodiment of the invention provides a pressure generating device identification method, which is applied to ventilation support equipment and comprises the following steps: measuring the air inlet pressure of the pressure generating device through a pressure detecting device, and measuring the air inlet flow rate of the pressure generating device through a flow detecting device; determining a current corresponding relationship between the intake pressure and the intake flow rate; the current correspondence is compared to the stored at least one standard correspondence to identify the type of pressure generating device. According to the technical scheme provided by the embodiment of the invention, the type of the pressure generating device is identified by utilizing the corresponding relation between the air inlet pressure of the pressure generating device which is not influenced by leakage and the air inlet flow rate flowing through the pressure generating device, so that the accuracy of identifying the type of the pressure generating device is improved.
FIG. 1 is a schematic structural diagram of a ventilatory support device, according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an identification system of a pressure generating device according to an embodiment of the present invention;
fig. 3 is a first schematic flow chart illustrating an identification method of a pressure generating device according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a process for identifying a type of pressure generating device using a current correspondence and at least one standard correspondence according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a pressure generating device according to an embodiment of the present invention;
fig. 6 is a second schematic flow chart illustrating an identification method of a pressure generating device according to an embodiment of the present invention;
fig. 7 is a third schematic flow chart illustrating a pressure generating device identification method according to an embodiment of the present invention.
So that the manner in which the features and aspects of the embodiments of the present invention can be understood in detail, a more particular description of the embodiments of the invention, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings.
Embodiments of the present invention provide a ventilation support apparatus that provides respiratory support to a patient via a pressure generating device. Fig. 1 is a schematic structural diagram of a ventilation support apparatus according to an embodiment of the present invention. As shown in fig. 1, the ventilation support device comprises: pressure generating device identification system 10, air supply interface 11, ventilation control unit 12, and breathing circuit 13.
Specifically, in the embodiment of the present invention, the breathing circuit 13 is connected to the gas source interface 11 and the ventilation control unit 12, and the gas provided by the gas source interface 11 is delivered to the patient through the breathing circuit 13 and the pressure generating device under the control of the ventilation control unit 12.
Specifically, in an embodiment of the present invention, the pressure generating device identification system 10 includes: a pressure detection device 101, a flow rate detection device 102, and a recognition device 103;
a pressure detection device 101 that measures the intake pressure of the pressure generation device;
a flow rate detection device 102 that measures an intake air flow rate of the pressure generation device;
the identification device 103 is connected to the pressure detection device 101 and the flow detection device 102, and the identification device 103 implements the following steps:
determining a current corresponding relationship between the intake pressure and the intake flow rate;
the current correspondence is compared to the stored at least one standard correspondence to identify the type of pressure generating device.
In the embodiment of the present invention, the ventilation support apparatus may be an apparatus having a ventilation function, such as a ventilator or an anesthesia apparatus. The ventilatory support device comprises a pressure generating device. The pressure generating device may be a pressure generator or the like provided with a device for generating pressure. Specific ventilation support devices and pressure generating devices embodiments of the invention are not limited.
In the embodiment of the present invention, the identification device 103 is connected to the ventilation control unit 12, and the pressure or flow rate of the gas output from the breathing circuit 13 is controlled by the ventilation control unit 12.
It will be appreciated that in embodiments of the invention, the identification means 103 is connected to the ventilation control unit 12, and the identification means 103 controls the pressure or flow rate of the gas to the pressure generating means to be at a particular value or within a particular interval by controlling the ventilation unit. The identification device 103 may specifically control the gas pressure or the gas flow rate according to the actual relevant setting, and the embodiment of the present invention is not limited thereto.
Fig. 2 is a schematic structural diagram of an identification system of a pressure generating device according to an embodiment of the present invention. As shown in fig. 2, the pressure generating device identification system includes: a pressure detection device 101, a flow rate detection device 102, and a recognition device 103 connected to the pressure detection device 101 and the flow rate detection device 102;
a pressure detection device 101 that measures the intake pressure of the pressure generation device;
a flow rate detection device 102 that measures an intake air flow rate of the pressure generation device;
the recognition device 103 implements the following steps:
determining a current corresponding relationship between the intake pressure and the intake flow rate;
the current correspondence is compared with the stored standard correspondence to identify the type of pressure generating device. The stored standard correspondence may include one or more according to actual needs. Further, the pressure generating device identification system may further include a memory to store at least one standard correspondence. Moreover, the pressure generating device identification system can also perform updating operations such as addition, deletion, modification and the like on the stored standard corresponding relation. In a specific implementation, the pressure generating device may be externally connected to the identification system or may include an input device, and the identification device 103 updates the stored standard correspondence according to information of the input device.
Optionally, the current correspondence and the standard correspondence may be divided into one or more intervals according to pressure or flow rate intervals;
the identifying means 103 performs a comparison of the current correspondence with the stored standard correspondence, the step of identifying the type of pressure generating means comprising:
determining a corresponding target interval according to the air inlet pressure or the air inlet flow speed;
selecting at least one part of standard corresponding relations corresponding to the target interval from the standard corresponding relations respectively;
and comparing the current corresponding relation with the selected part of standard corresponding relation respectively to identify the type of the pressure generating device.
Optionally, the step of comparing the current corresponding relationship with the selected standard corresponding relationship by the identifying device 103 to identify the type of the pressure generating device includes:
determining a standard corresponding relation with the maximum similarity to the current corresponding relation from the selected part of standard corresponding relations;
and determining the type of the pressure generating device corresponding to the standard corresponding relation with the maximum similarity as the type of the pressure generating device.
Optionally, after identifying the type of the pressure generating device, the identifying device 103 further performs the following steps:
based on the recognized type of the pressure generating device, determining a target air inlet flow rate according to the stored corresponding relation between the near-nose end pressure corresponding to the type of the pressure generating device and the air inlet flow rate and the set target near-nose end pressure;
outputting the target intake air flow rate to the ventilation support device.
Optionally, after identifying the type of the pressure generating device, the identifying device 103 further performs the following steps:
comparing the identified pressure generating device type with a preset pressure generating device type;
and under the condition that the recognized type of the pressure generating device is different from the preset type of the pressure generating device, outputting alarm prompt information.
In the embodiment of the present invention, the pressure detection device 101 is a device for measuring the pressure of the gas, such as a pressure sensor. The flow rate detection device 102 is a device that measures the flow rate of gas, and includes, for example, a flow sensor. The specific pressure detection device 101 and the flow detection device 102 may be selected according to actual requirements, and the embodiment of the present invention is not limited.
In the embodiment of the present invention, the recognition Device 103 may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a Central Processing Unit (CPU), a controller, a microcontroller, and a micro-recognition Device, but the embodiment of the present invention is not limited thereto.
In the embodiment of the present invention, the pressure detection device 101 and the flow detection device 102 included in the pressure generation device identification system 10 may be disposed at the gas output end of the breathing circuit 13, or may be disposed at the gas inlet end of the pressure generation device, which is not limited in the embodiment of the present invention.
The following is a detailed description of the pressure generating device identification method based on the pressure generating device identification system 10.
Fig. 3 is a first flowchart illustrating an identification method of a pressure generating device according to an embodiment of the present invention. As shown in fig. 3, the identification method of the pressure generating device mainly includes the following steps:
s301, measuring the air inlet pressure of the pressure generating device through the pressure detecting device, and measuring the air inlet flow speed of the pressure generating device through the flow detecting device.
In an embodiment of the present invention, the pressure generating device identification system 10 may measure the intake pressure of the pressure generating device through the pressure detecting device 101, and measure the intake air flow rate of the pressure generating device through the flow detecting device 102.
It should be noted that, in the embodiment of the present invention, the pressure detection device 101 and the flow detection device 102 may measure the intake pressure and the intake flow rate of the pressure generation device in real time, and of course, the intake pressure and the intake flow rate may also be measured according to a certain period or a certain time period. The intake pressure and the intake flow rate measured by the pressure detection device 101 and the flow detection device 102 may include a plurality of pressures and a plurality of flow rates. Specific intake pressure and intake flow rate embodiments of the invention are not limited.
It is understood that, in the embodiment of the present invention, in comparison with the case where the pressure near the nose of the pressure generating device is measured, in which the nose plug or the nose mask worn by the patient cannot be completely fitted to the patient, the nose leaks, and the obtained pressure reflecting the pressure generated by the pressure generating device is inaccurate, the pressure detecting device 101 measures the intake pressure of the pressure generating device, and the obtained intake pressure is hardly affected by the leakage.
S302, determining the current corresponding relation between the intake pressure and the intake flow rate.
In the embodiment of the present invention, the pressure generating device identification system 10 further determines the current correspondence relationship between the intake pressure and the intake flow rate by the identification device 103 after measuring the intake pressure and the intake flow rate of the pressure generating device by the pressure detection device 101 and the flow rate detection device 102.
It should be noted that, in the embodiment of the present invention, since the intake pressure and the intake flow rate measured by the pressure detection device 101 and the flow detection device 102 may include a plurality of pressures and a plurality of flow rates, the identification device 103 may perform fitting according to the intake pressure and the intake flow rate to obtain the current corresponding relationship. The present invention is not limited to the specific embodiment of the present invention.
For example, in the embodiment of the present invention, the recognition device 103 may perform a process of fitting the measured intake pressure and the intake flow rate in a specific manner, etc., to obtain the corresponding current corresponding relationship as shown in the following formula (1):
Pm＝k a×Flow 2 (1)
wherein Pm is intake pressure, Flow is intake Flow rate, kaAre coefficients.
It should be noted that, in the embodiment of the present invention, if the measured intake pressure includes multiple pressures and the intake flow rate includes multiple flow rates, the identifying device 103 may divide the multiple pressures and the multiple flow rates into intervals, perform fitting according to the pressures and the flow rates for each interval, determine the corresponding relationship by using the pressures and the flow rates included in the intervals, and accordingly, the obtained current corresponding relationship may include one or more interval corresponding relationships. The specific division interval is not limited in the embodiments of the present invention.
S303, comparing the current corresponding relation with at least one stored standard corresponding relation, and identifying the type of the pressure generating device.
In an embodiment of the present invention, the pressure generating device identification system may identify the type of the pressure generating device by comparing the current correspondence with the stored at least one standard correspondence after the current correspondence between the intake air pressure and the intake air flow rate is determined by the identification means 103.
It should be noted that in the embodiment of the present invention, there is a standard correspondence relationship of the intake air pressure and the intake air flow rate for each type of pressure generating device. The identification device 103 stores at least one standard corresponding relationship corresponding to at least one type of pressure generation device. In the at least one standard correspondence, each standard correspondence corresponds to a pressure generating device type. The specific at least one standard corresponding relationship and the type of the pressure generating device corresponding to each standard corresponding relationship in the at least one standard corresponding relationship may be determined by performing measurement and calculation on related data in advance, or provided by a manufacturer of the corresponding pressure generating device, which is not limited in the embodiment of the present invention.
Fig. 4 is a schematic flow chart illustrating a process of identifying a type of a pressure generating device by using a current correspondence and at least one standard correspondence according to an embodiment of the present invention. As shown in fig. 4, the step of the identifying means 103 comparing the current correspondence with the stored at least one standard correspondence and identifying the type of the pressure generating means comprises:
s401, determining a corresponding target interval according to the intake pressure or the intake flow rate.
In an embodiment of the present invention, the identification means 103 may determine the corresponding target section according to the intake pressure or the intake flow rate.
It should be noted that, in the embodiment of the present invention, each type of pressure generating device has a corresponding standard correspondence relationship between the intake air pressure and the intake air flow rate. However, in different intake flow rate intervals, the corresponding relationship may change, that is, the coefficients shown in the formula (1) may have differences, and in order to more accurately identify the type of the pressure generating device, the identifying device 103 may determine a corresponding target interval according to the intake pressure or the intake flow rate, so as to select at least a part of standard corresponding relationships corresponding to the target interval from at least one standard corresponding relationship in the subsequent process, respectively, for comparison, so as to identify the type of the pressure generating device.
For example, in the embodiment of the present invention, the intake flow rate measured by the pressure detection device 101 is 7LPM, and the intake flow rate may be generally divided into four intervals of 0 to 5LPM, 5 to 10LPM, 10 to 15LPM, and 15 to 20 LPM. Therefore, the recognition means 103 may determine the intake air flow rate 5 to 10LPM as the target section.
It should be noted that, in the embodiment of the present invention, if the measured flow rate of the intake air includes a plurality of flow rates and the intake pressure includes a plurality of pressures, the identification device 103 may further determine a plurality of intervals as the target interval according to the plurality of flow rates or the plurality of pressures. For example, the measured intake air flow rates include 2LPM, 3LPM, 4LPM, 8LPM, and 9LPM, where 2LPM, 3LPM, and 4LPM belong to the 0 to 5LPM section, and 8LPM and 9LPM belong to the 5 to 10LPM section, and therefore, the recognition device 103 may determine the 0 to 5LPM section and the 5 to 10LPM section as the target sections.
S402, selecting at least one part of standard corresponding relations corresponding to the target interval from the at least one standard corresponding relation.
In the embodiment of the present invention, after the identifying device 103 determines the target interval, further, at least a part of the standard corresponding relations corresponding to the target interval is selected from the at least one standard corresponding relation, respectively.
It will be appreciated that in embodiments of the invention, each of the at least one standard correspondence is a relationship between intake air flow rate and intake pressure within the allowable intake air pressure and intake air flow rate, normally for one type of pressure generating device. The standard correspondence may comprise a plurality of correspondence coefficients, each of which may in fact correspond to a pressure interval or a flow rate interval. For example, a pressure generating device allows for a range of inlet flow rates from 0 to 15LPM, with the standard correspondence including three coefficients. Wherein, in the range of the intake flow rate from 0 to 5LPM, the coefficient in the corresponding relationship between the intake flow rate and the intake pressure is k1, in the range of the intake flow rate from 5 to 10LPM, the coefficient in the corresponding relationship between the intake flow rate and the intake pressure is k2, and in the range of the intake flow rate from 10 to 15LPM, the coefficient in the corresponding relationship between the intake flow rate and the intake pressure is k 3. Therefore, the identifying device 103 may select each partial correspondence corresponding to the target interval from the at least one standard correspondence, so as to obtain at least a part of the standard correspondence.
Illustratively, in the embodiment of the invention, the at least one standard correspondence includes a standard correspondence corresponding to a certain pressure generating device type, and the coefficient in the standard correspondence is k11 when the intake air flow rate is 0 to 5LPM, k12 when the intake air flow rate is 5 to 10LPM, and k13 when the intake air flow rate is 10 to 15 LPM. The target interval specified by the identification means 103 is 5 to 10LPM, and therefore, the partial correspondence relationship having the coefficient k12 in the standard correspondence relationship corresponding to a certain pressure generating device type is selected.
And S403, comparing the current corresponding relation with at least one part of standard corresponding relation respectively, and identifying the type of the pressure generating device.
In an embodiment of the present invention, after obtaining the current corresponding relationship and at least a part of the standard corresponding relationship, the identifying device 103 may compare the current corresponding relationship with each of the at least a part of the standard corresponding relationship, so as to identify the type of the pressure generating device.
Specifically, in the embodiment of the present invention, the step of comparing the current correspondence with at least a part of the standard correspondence by the identification device 103 and identifying the type of the pressure generation device includes: determining a standard corresponding relation with the maximum similarity with the current corresponding relation from at least a part of standard corresponding relations; and determining the type of the pressure generating device corresponding to the standard corresponding relation with the maximum similarity as the type of the pressure generating device.
It should be noted that, in the embodiment of the present invention, the identifying device 103 determines, from at least a part of the standard correspondences, one standard correspondence with the current correspondence with the highest degree of similarity, which may be by comparing absolute values of differences between coefficients of each of the current partial relations and at least a part of the standard correspondences, where the partial correspondence with the smallest absolute value of difference is actually one standard correspondence with the highest degree of similarity of the current correspondence, so as to determine the type of the pressure generating device corresponding to the standard correspondence with the highest degree of similarity.
Illustratively, in the embodiment of the present invention, the current correspondence relationship has a coefficient of km, and includes four partial correspondence relationships a1, a2, A3 and a4, where k in a1 is ka, k in a2, kc in A3, and kd in a 4. The identifying means 103 determines the absolute value of the difference between ka, kb, kc and kd, respectively, and km, and obtains the absolute value of the difference between kd and km, which is the smallest absolute value, i.e. the largest degree of similarity characterizing the current correspondence with the partial correspondence a4, so that the type of the pressure generating means corresponding to the stored partial correspondence a4 is the first type, and thus, the identifying means 103 can determine the type of the pressure generating means as the first type.
It is understood that, in the embodiment of the present invention, considering that the standard correspondence relationship of the pressure generating device is in different intake flow rate intervals, the corresponding coefficients have differences, and therefore, comparing the partial correspondence relationship of the interval in which the intake flow rate exists with the current correspondence relationship can identify the type of the pressure generating device more accurately.
Fig. 5 is a schematic diagram illustrating identification and comparison of a pressure generating device according to an embodiment of the present invention. As shown in fig. 5, when there is no leakage in the pressure generating device 1, the correspondence relationship between the intake pressure and the intake flow rate is shown by a solid line L11, and when there is leakage in the pressure generating device 1, the correspondence relationship between the intake pressure and the intake flow rate is shown by a broken line L12, and compared to these, since the intake pressure is hardly affected by the leakage, L11 and L12 are substantially the same. On the other hand, when the pressure generating apparatus 1 has no leak, the correspondence relationship between the near-nose pressure and the intake flow rate is shown by a solid line L13, and when the pressure generating apparatus has a leak, the correspondence relationship between the near-nose pressure and the intake flow rate is shown by a broken line L14, but compared with the above, the deviation between L13 and L14 is larger because the near-nose pressure is affected by the nose leak. Based on the two comparisons, the pressure generation device type is identified by the corresponding relationship between the intake pressure and the intake flow rate, so that the pressure generation device type is not easily affected by leakage. In addition, as shown in fig. 5, the pressure generating device 2 is of a different type from the pressure generating device 1, and when there is no leakage, the correspondence between the intake pressure and the intake flow rate is shown by a solid line L21, and the correspondence between the near-nose pressure and the intake flow rate is shown by a solid line L22, where the deviation between L21 and L11 and L12 is large, so that it is easy to recognize that the types of the pressure generating devices are different, and the deviation between L22 and L14 is small, so that it may be mistakenly recognized, that is, it is more accurate to recognize the type of the pressure generating device using the correspondence between the intake pressure and the intake flow rate according to the present invention.
It should be noted that, in the embodiment of the present invention, the current correspondence may include a plurality of interval correspondences, and the target interval may include a plurality of intervals. The identification device 103 may select a partial correspondence relationship for each of the target intervals. For example, the target interval may include 0 to 5LPM and 10 to 15LPM, and therefore, the identifying device 103 may obtain a partial correspondence corresponding to 0 to 5LPM and a partial correspondence corresponding to 10 to 15LPM from at least one standard correspondence, respectively. Correspondingly, the identification device 103 may compare each of the plurality of interval relationships included in the current correspondence with the corresponding partial correspondence, identify the type of the pressure generating device, obtain a plurality of identification results, and finally determine an accurate type of the pressure generating device according to the plurality of identification results. Of course, the identification device 103 may also compare one of the interval relationships included in the current correspondence with the corresponding partial correspondence, and if the type of the pressure generation device cannot be identified, continue to compare the other interval relationships in the interval relationships with the corresponding partial correspondence, thereby completing the identification.
It should be noted that, in the embodiment of the present invention, after the pressure generating device identification system identifies the type of the pressure generating device, further, the related application may also be performed.
Fig. 6 is a second schematic flow chart illustrating a pressure generating device identification method according to an embodiment of the present invention. As shown in fig. 6, after step S303, the following steps may be further included:
s601, based on the recognized pressure generating device type, determining a target air inlet flow rate according to the stored corresponding relation between the near-nose end pressure corresponding to the pressure generating device type and the air inlet flow rate and the set near-nose end target pressure.
In an embodiment of the present invention, after identifying the type of the pressure generating device, the identifying device 103 may further determine the target intake air flow rate based on the identified type of the pressure generating device, according to the stored correspondence relationship between the near-nose pressure and the intake air flow rate corresponding to the type of the pressure generating device, and the set near-nose target pressure.
It should be noted that, in the embodiment of the present invention, the corresponding relationship between the near-nose pressures of different pressure generating device types and the intake air flow rate may be pre-stored, or may be established in a self-test or real-time detection process, and the embodiment of the present invention is not limited.
It is to be understood that, in the embodiment of the present invention, the identifying means 103 may determine the target intake air flow rate corresponding to the set near-nose target pressure using the correspondence relationship between the near-nose pressure and the intake air flow rate from the identified pressure generating means type. The target inlet flow rate is the inlet flow rate demanded by the patient.
It can be understood that, in the embodiment of the present invention, the identification device 103 determines the target intake air flow rate corresponding to the set target pressure at the near-nose end by using the identified type of the pressure generation device and the corresponding relationship between the corresponding near-nose end pressure and the intake air flow rate, so that the ventilation support apparatus can quickly acquire the target intake air flow rate, thereby controlling to reach the target intake air flow rate, or maintaining the target intake air flow rate within a certain range, thereby reaching the set near-nose end pressure to meet the ventilation requirement of the patient. Simultaneously, can also avoid causing discomfort or damage to the patient because the air intake velocity sets up improperly.
Fig. 7 is a third schematic flow chart illustrating a pressure generating device identification method according to an embodiment of the present invention. As shown in fig. 7, after step S303, the following steps may be further included:
and S701, comparing the identified pressure generating device type with a preset pressure generating device type.
In an embodiment of the present invention, the identifying means 103 may compare the identified type of the pressure generating means with a preset type of the pressure generating means after identifying the type of the pressure generating means.
It should be noted that, in the embodiment of the present invention, a preset pressure generating device type is stored for the pressure generating device. The preset pressure generating device type can be used for determining the type of the pressure generating device needed to be used by medical staff according to the illness condition of a patient. The specific type of the preset pressure generating device is not limited in the embodiments of the present invention.
It can be understood that, in the embodiment of the present invention, there are many types of pressure generating devices, and the currently used type of pressure generating device is different from the preset type of pressure generating device, and the use of an incorrect type of pressure generating device may cause the pressure near the nose end to fail to reach the required pressure, resulting in abnormal pressure, thereby affecting the therapeutic effect of the patient, or even causing injury to the patient. Therefore, the identifying means 103 compares the identified pressure generating means type with the preset pressure generating means type, thereby determining whether a pressure generating means of a type matching is selected.
S702, outputting alarm prompt information under the condition that the recognized type of the pressure generating device is different from the type of the preset pressure generating device.
In the embodiment of the present invention, after the recognition means 103 compares the recognized type of the pressure generating means with the preset type of the pressure generating means, in the case where the recognized type of the pressure generating means is different from the preset type of the pressure generating means, an alarm notice is outputted.
It will be appreciated that in embodiments of the present invention, where the identified pressure generating device type is different from the preset pressure generating device type, the selection by the healthcare worker of the currently used pressure generating device is illustrated and is not the type of pressure generating device that the healthcare worker previously intended to use. At this moment, can in time output warning prompt message, medical personnel can judge whether the pressure generating device type of discerning also can guarantee to carry out normal support of ventilating to the patient, if can, then medical personnel can select to maintain the pressure generating device type of current discernment, if not feasible, then medical personnel can be with the pressure generating device type adjustment of current adoption for predetermineeing the pressure generating device type.
In the embodiment of the present invention, when the recognized pressure generating device type is different from the preset pressure generating device type, the output warning prompt message by the recognition device 103 may be a text prompt message or an audio prompt message, such as a buzzer, but the embodiment of the present invention is not limited thereto.
The embodiment of the invention provides a pressure generating device identification method, which is applied to ventilation support equipment and comprises the following steps: measuring the air inlet pressure of the pressure generating device through a pressure detecting device, and measuring the air inlet flow rate of the pressure generating device through a flow detecting device; determining a current corresponding relationship between the intake pressure and the intake flow rate; the current correspondence is compared to the stored at least one standard correspondence to identify the type of pressure generating device. According to the technical scheme provided by the embodiment of the invention, the type of the pressure generating device is identified by utilizing the corresponding relation between the air inlet pressure of the pressure generating device which is not influenced by leakage and the air inlet flow rate flowing through the pressure generating device, so that the accuracy of identifying the type of the pressure generating device is improved.
The disclosed embodiment also provides a computer-readable storage medium storing a pressure generating device identification program, which can be executed by an identification device to implement the pressure generating device identification method. The computer-readable storage medium may be a volatile Memory (volatile Memory), such as a Random-Access Memory (RAM); or a non-volatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard Disk (Hard Disk Drive, HDD) or a Solid-State Drive (SSD); or may be a variety of devices including one or any combination of the above memories, such as a mobile phone, computer, tablet device, personal digital assistant, etc.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or other programmable signal processing apparatus to produce a machine, such that the instructions, which execute via the computer or other programmable signal processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable signal processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable signal 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 flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
In the technical scheme of the embodiment of the invention, the air inlet pressure of the pressure generating device is measured by the pressure detecting device, and the air inlet flow rate of the pressure generating device is measured by the flow detecting device; determining a current corresponding relationship between the intake pressure and the intake flow rate; the current correspondence is compared to the stored at least one standard correspondence to identify the type of pressure generating device. According to the technical scheme provided by the embodiment of the invention, the type of the pressure generating device is identified by utilizing the corresponding relation between the air inlet pressure of the pressure generating device which is not influenced by leakage and the air inlet flow rate flowing through the pressure generating device, so that the accuracy of identifying the type of the pressure generating device is improved.
Claims (13)
- A ventilation support apparatus that provides respiratory support to a patient via a pressure generating device, the ventilation support apparatus comprising: the pressure generating device comprises a pressure generating device identification system, an air source interface, a ventilation control unit and a breathing loop;the breathing circuit is connected with the gas source interface, the ventilation control unit and the pressure generating device, and the gas provided by the gas source interface is conveyed to a patient through the breathing circuit and the pressure generating device under the control of the ventilation control unit;the pressure generating device identification system includes: the device comprises a pressure detection device, a flow detection device and a recognition device;the pressure detection device is used for measuring the air inlet pressure of the pressure generation device;the flow detection device measures the air inlet flow speed of the pressure generation device;the identification device is connected with the pressure detection device and the flow detection device, and the identification device realizes the following steps:determining a current correspondence between the intake pressure and the intake flow rate;comparing the current correspondence with at least one stored standard correspondence, and identifying the type of the pressure generating device.
- The ventilation support apparatus of claim 1, wherein the identification device is further connected to the ventilation control unit,the identification device controls the gas pressure or the gas flow rate output by the breathing circuit through the ventilation control unit.
- A pressure generating device identification system for use with a ventilatory support apparatus, the system comprising: the flow meter comprises a pressure detection device, a flow detection device and an identification device connected with the pressure detection device and the flow detection device;the pressure detection device is used for measuring the air inlet pressure of the pressure generation device;the flow detection device measures the air inlet flow speed of the pressure generation device;the identification device realizes the following steps:determining a current correspondence between the intake pressure and the intake flow rate;comparing the current correspondence with at least one stored standard correspondence, and identifying the type of the pressure generating device.
- The system of claim 3,said step of said identifying means performing said comparing said current correspondence with at least one stored standard correspondence, the step of identifying the type of said pressure generating means comprising:determining a corresponding target interval according to the air inlet pressure or the air inlet flow speed;selecting at least one part of standard corresponding relations corresponding to the target interval from the at least one standard corresponding relation respectively;and comparing the current corresponding relation with the at least one part of standard corresponding relation respectively to identify the type of the pressure generating device.
- The system of claim 4, wherein the identifying means performs the step of comparing the current correspondence with the at least a portion of the standard correspondence, respectively, and wherein the step of identifying the type of the pressure generating device comprises:determining a standard corresponding relation with the maximum similarity with the current corresponding relation from the at least one part of standard corresponding relations;and determining the type of the pressure generating device corresponding to the stored standard corresponding relation with the maximum similarity as the type of the pressure generating device.
- The system of claim 3, wherein the identifying means, after identifying the type of the pressure generating device, further performs the steps of:and determining the target air inlet flow rate according to the stored corresponding relation between the near-nose end pressure corresponding to the pressure generation device type and the air inlet flow rate and the set near-nose end target pressure based on the identified pressure generation device type.
- The apparatus according to claim 3, wherein the identifying means, after identifying the type of the pressure generating means, further performs the steps of:comparing the identified pressure generating device type with a preset pressure generating device type;and under the condition that the recognized type of the pressure generating device is different from the type of the preset pressure generating device, outputting alarm prompt information.
- A method for identifying a pressure generating device for use in a ventilatory support apparatus, the method comprising:measuring the air inlet pressure of a pressure generating device through a pressure detecting device, and measuring the air inlet flow speed of the pressure generating device through a flow detecting device;determining a current correspondence between the intake pressure and the intake flow rate;comparing the current correspondence with at least one stored standard correspondence, and identifying the type of the pressure generating device.
- The method of claim 8, wherein said comparing said current correspondence with at least one stored standard correspondence to identify a type of said pressure generating device comprises:determining a corresponding target interval according to the air inlet pressure or the air inlet flow speed;selecting at least one part of standard corresponding relations corresponding to the target interval from the at least one standard corresponding relation respectively;and comparing the current corresponding relation with the at least one part of standard corresponding relation respectively to identify the type of the pressure generating device.
- The method of claim 9, wherein said comparing said current correspondence with said at least a portion of standard correspondences, respectively, to identify a type of said pressure generating device comprises:determining a standard corresponding relation with the maximum similarity with the current corresponding relation from the at least one part of standard corresponding relations;and determining the type of the pressure generating device corresponding to the stored standard corresponding relation with the maximum similarity as the type of the pressure generating device.
- The method of claim 8, wherein after identifying the type of the pressure generating device, the method further comprises:based on the recognized type of the pressure generating device, determining a target air inlet flow rate according to the stored corresponding relation between the near-nose end pressure corresponding to the type of the pressure generating device and the air inlet flow rate and the set target near-nose end pressure;outputting the target intake air flow rate to the ventilation support device.
- The method of claim 8, wherein after identifying the type of the pressure generating device, the method further comprises:comparing the identified pressure generating device type with a preset pressure generating device type;and under the condition that the recognized type of the pressure generating device is different from the type of the preset pressure generating device, outputting alarm prompt information.
- A computer-readable storage medium, characterized in that the computer-readable storage medium stores a pressure generating device identifying program that can be executed by an identifying device to implement the pressure generating device identifying method according to any one of claims 8 to 12.
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| PCT/CN2019/122801 WO2021109003A1 (en) | 2019-12-03 | 2019-12-03 | Pressure generation device identification method and system, ventilation support apparatus, and storage medium |
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