Pressure detection zero calibration module

Abstract

The embodiment of the utility model provides a pressure detection zero calibration module. The pressure detection zero calibration module is used for measuring and calibrating the pressure of the ventilation treatment equipment, and comprises a module main body, and a pressure acquisition assembly and a pressure zero calibration assembly which are electrically connected to the module main body, wherein the pressure acquisition assembly is electrically connected with the pressure zero calibration assembly and is used for acquiring and detecting airway pressure and near-end pressure of the ventilation treatment equipment, and the pressure zero calibration assembly is used for performing zero calibration on the airway pressure and the near-end pressure. Thus, the pressure acquisition assembly and the pressure zero calibration assembly can be integrated and modularly arranged, hose connection between devices of the pressure detection zero calibration module is reduced, the sealing reliability between the pressure acquisition assembly and the pressure zero calibration assembly is improved, and the risk of air leakage caused by falling of a connecting part in the pressure detection zero calibration module is reduced. The space occupied by the pressure detection zero calibration module is reduced, and the space utilization rate of the pressure detection zero calibration module is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a pressure detection zero calibration module. Background Art

[0002] When the relevant ventilation therapy equipment is in use, due to the more precise data collection and algorithm requirements of the ventilation therapy equipment, the ventilation therapy equipment usually needs to add the collection of the pressure of the host air supply airway (the airway formed by the host air outlet) and the near-patient exhalation port (the pipe port connected to the patient's breathing mask exhalation airway) on the basis of collecting the airway pressure, and the pressure sensor used to detect the pressure needs to be zeroed.

[0003] At present, in order to measure and zero the above pressure, a design is usually adopted in which the pressure sensor, the zeroing three-way valve and the acquisition circuit board are directly connected to the outside through a hose.

[0004] However, when the pressure sensor, the zero calibration three-way valve and the acquisition circuit board are directly connected to the outside through a hose, more hoses are needed for connection, which will cause the sealing reliability of the connection parts between the hose and the pressure sensor and between the hose and the three-way valve to deteriorate, thereby increasing the risk of air leakage at the connection parts of the ventilation therapy equipment. In addition, it will also cause the entire measurement gas circuit to occupy a larger space, which is not conducive to the overall structural layout of the machine. Utility Model Content

[0005] In order to solve or partially solve the above problems, the utility model discloses a pressure detection zero calibration module to solve the problems in the prior art.

[0006] In a first aspect, the utility model discloses a pressure detection and zeroing module for measuring and zeroing the pressure of a ventilation therapy device, wherein the pressure detection and zeroing module comprises:

[0007] A module body and a pressure collection component and a pressure zeroing component electrically connected to the module body;

[0008] Among them, the pressure collection component and the pressure zeroing component are electrically connected, the pressure collection component is used to collect and detect the airway pressure and proximal pressure of the ventilation therapy equipment, and the pressure zeroing component is used to zero the airway pressure and proximal pressure.

[0009] Optionally, the pressure acquisition component includes a first pressure sensor, a first solenoid valve and a first pressure port, and the pressure zero calibration component includes a zero calibration port;

[0010] The first pressure port is connected between the main air supply channel of the ventilation therapy device and the first solenoid valve, and the first pressure sensor and the zero calibration port are both electrically connected to the first solenoid valve;

[0011] When the first solenoid valve is powered off, the gas flowing from the main air supply passage of the ventilation therapy device enters the first pressure sensor via the first solenoid valve;

[0012] When the first solenoid valve is powered on, the first solenoid valve and the zero calibration port are electrically connected.

[0013] Optionally, the pressure collection assembly includes a second pressure sensor, a second solenoid valve and a second pressure port;

[0014] The second pressure port is connected between the near-patient exhalation port and the second solenoid valve, and the second pressure sensor and the zero calibration port are both electrically connected to the second solenoid valve;

[0015] When the second solenoid valve is powered off, the gas flowing from the near-patient exhalation port enters the second pressure sensor via the second solenoid valve;

[0016] When the second solenoid valve is energized, the second solenoid valve and the zero calibration port are electrically connected.

[0017] Optionally, the first solenoid valve is a two-phase three-way solenoid valve, and the first solenoid valve comprises a first air inlet, a first working port and a first conduction port;

[0018] The first pressure port is connected between the first air inlet and the main air supply channel of the ventilation therapy device, the first working port is connected to the first pressure sensor, and the first conduction port is connected to the zero calibration port;

[0019] When the first solenoid valve is powered off, the first air inlet is connected to the first working port;

[0020] When the first solenoid valve is energized, the first working port and the first conduction port are in communication.

[0021] Optionally, the second solenoid valve is a two-phase three-way solenoid valve, and the second solenoid valve includes a second air inlet, a second working port, and a second conduction port;

[0022] The second pressure port is connected between the second air inlet and the near-patient exhalation port, the second working port is connected to the second pressure sensor, and the second conduction port is connected to the zero calibration port;

[0023] When the second solenoid valve is powered off, the second air inlet is connected to the second working port;

[0024] When the second solenoid valve is energized, the second working port and the second conduction port are communicated with each other.

[0025] Optionally, the pressure detection zero calibration module further includes an air path control component and a connecting air path;

[0026] The connecting air path connects the main air supply airway of the ventilation therapy device and the near-patient exhalation port, and the air path control component is arranged in the connecting air path to control the ventilation state of the main air supply airway of the ventilation therapy device to the near-patient exhalation port.

[0027] Optionally, the gas circuit control component includes an air block or a control gas circuit.

[0028] Optionally, the communicating gas path is an internal gas path of the module body or an external pipeline of the module body.

[0029] Optionally, the number of the first solenoid valves is at least two, the number of the second solenoid valves is at least two, at least one of the at least two first solenoid valves is connected to the second pressure sensor, and at least one of the at least two second solenoid valves is connected to the first pressure sensor.

[0030] Optionally, the pressure detection zero calibration module further includes a circuit board;

[0031] The first pressure sensor and the second pressure sensor are mounted on the circuit board.

[0032] Optionally, the first pressure sensor and the second pressure sensor are embedded in the module body, and the circuit board covers the top of the module body.

[0033] Optionally, the first pressure port and the second pressure port are arranged on a first side of the module body, and the zero calibration port is arranged on a second side of the module body, wherein the first side and the second side are two intersecting or opposite sides of the module body.

[0034] Optionally, the interior of the module body includes a first gas path, a second gas path and a third gas path;

[0035] The first solenoid valve and the second solenoid valve are installed inside the module body, the first pressure port is connected to the first solenoid valve through the first gas path, the second pressure port is connected to the second solenoid valve through the second gas path, and the zeroing port is connected to the first solenoid valve and the second solenoid valve through the third gas path.

[0036] Compared with the prior art, the embodiments of the present invention have the following advantages:

[0037] In the embodiment of the utility model, due to the module body and the pressure collection component and the pressure zeroing component electrically connected to the module body, the pressure collection component is used to collect and detect the airway pressure and proximal pressure of the ventilation therapy device, and the pressure zeroing component is used to zero the airway pressure and the proximal pressure. Therefore, not only the airway pressure of the ventilation therapy device (the pressure corresponding to the main air supply airway of the ventilation therapy device) can be detected and zeroed, but also the proximal pressure (the pressure near the patient's exhalation port) can be detected and zeroed. At the same time, the pressure collection component and the pressure zeroing component can be integrated into a modular setting to reduce the hose connection between the various components of the pressure detection and zeroing module, thereby improving the sealing reliability between the pressure collection component and the pressure zeroing component, reducing the risk of falling off and leakage at the connection part in the pressure detection and zeroing module, and reducing the space occupied by the pressure detection and zeroing module, thereby improving the space utilization rate of the pressure detection and zeroing module. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a pressure detection zero calibration module and a structural schematic diagram of an embodiment of the utility model;

[0040] Figure 2 This is a schematic diagram of the assembly of a pressure detection zero calibration module according to an embodiment of the utility model;

[0041] Figure 3 This is a gas circuit principle diagram of a pressure detection zero calibration module according to an embodiment of the utility model;

[0042] Figure 4 This is another gas circuit principle diagram of a pressure detection zero calibration module according to an embodiment of the utility model.

[0043] Description of reference numerals:

[0044] 1-module body; 2-pressure acquisition component; 3-pressure zeroing component; 4-air path control component; 5-circuit board; 6-air supply duct of host machine; 21-first pressure sensor; 22-first solenoid valve; 23-first pressure port; 24-second pressure sensor; 25-second solenoid valve; 26-second pressure port; 31-zeroing port. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0047] Figure 1 This is a pressure detection zero calibration module and a structural schematic diagram of an embodiment of the utility model. Figure 2 This is a schematic diagram of the assembly of a pressure detection zero calibration module according to an embodiment of the utility model. Figure 2 This is a schematic diagram of the assembly of a pressure detection zero calibration module according to an embodiment of the utility model. Figure 4 This is another pressure detection zero calibration module gas circuit schematic diagram of the utility model embodiment, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The pressure detection and zeroing module is used to measure and zero the pressure of ventilation therapy equipment. The pressure detection and zeroing module includes:

[0048] A module body 1 and a pressure collection component 2 and a pressure zero calibration component 3 electrically connected to the module body 1.

[0049] Among them, the pressure collection component 2 and the pressure zeroing component 3 are electrically connected, the pressure collection component 2 is used to collect and detect the airway pressure and proximal pressure of the ventilation treatment equipment, and the pressure zeroing component 3 is used to zero the airway pressure and proximal pressure.

[0050] It can be seen from the above embodiments that in the embodiments of the utility model, due to the module body 1 and the pressure collection component 2 and the pressure zeroing component 3 electrically connected to the module body 1, the pressure collection component 2 is used to collect and detect the airway pressure and proximal pressure of the ventilation therapy device, and the pressure zeroing component 3 is used to zero the airway pressure and the proximal pressure. Therefore, not only the airway pressure of the ventilation therapy device (the pressure corresponding to the main air supply airway of the ventilation therapy device) can be detected and zeroed, but also the proximal pressure (the pressure near the patient's exhalation port) can be detected and zeroed. At the same time, the pressure collection component 2 and the pressure zeroing component 3 can be integrated into a modular setting to reduce the hose connection between the various components of the pressure detection and zeroing module, thereby improving the sealing reliability between the pressure collection component 2 and the pressure zeroing component 3, reducing the risk of falling off and leakage of the connection parts in the pressure detection and zeroing module, and reducing the space occupied by the pressure detection and zeroing module, thereby improving the space utilization rate of the pressure detection and zeroing module.

[0051] Among them, in the above embodiments, the module body 1 can be a box structure with an internal air path. The box structure can be a square box structure, a cylindrical box structure, or a box structure of other shapes, which is not limited in the embodiments of the present utility model.

[0052] The pressure acquisition component 2 can be used not only to detect the airway pressure of the main air supply airway 6 of the ventilation therapy device (the pressure corresponding to the main air supply airway 6 of the ventilation therapy device), but also to detect the proximal pressure (the pressure near the patient's exhalation port, exemplarily, the gas pressure in the pipeline connected to the exhalation hole of the patient's breathing mask). It should be noted that the pressure detection of the main air supply airway 6 of the ventilation therapy device can reflect the air supply pressure supplied to the patient end through the airway pressure of the main air supply airway 6 of the ventilation therapy device, and the pressure detection near the patient's exhalation port can reflect the gas pressure at the patient's exhalation end. In addition, the pressure acquisition component 2 can include a wind pressure sensor, a gas pressure gauge, a pressure sensor and other devices for gas pressure measurement, which is not limited in the embodiment of the utility model. The pressure zeroing component 3 used for zeroing the airway pressure and the proximal pressure can be any device such as a pressure transmitter, a pressure sensor, a pressure switch, a differential pressure transmitter, a digital pressure gauge, a special pressure calibrator or a zeroing port 31, which is not limited in the embodiment of the utility model. In addition, when the ventilation therapy device is in high flow mode, the host air supply duct 6 contains a mixture of oxygen and air, and the pressure collection component 2 collects the pressure of the mixed gas. When the ventilation therapy device is in ventilator mode, the host air supply duct 6 contains air, and the pressure collection component 2 collects the pressure of the air.

[0053] Next, the electrical structure of the pressure collection component 2, the electrical structure of the pressure zeroing component 3, and the gas principle of the pressure collection component 2 and the pressure zeroing component 3 are specifically introduced as follows:

[0054] In some feasible embodiments, when detecting and zeroing the main air supply duct 6 of the ventilation therapy device, the pressure collection component 2 includes a first pressure sensor 21, a first solenoid valve 22 and a first pressure port 23, and the pressure zeroing component 3 includes a zeroing port 31; the first pressure port 23 is connected between the main air supply duct 6 of the ventilation therapy device and the first solenoid valve 22, and the first pressure sensor 21 and the zeroing port 31 are both electrically connected to the first solenoid valve 22; when the first solenoid valve 22 is powered off, the gas flowing into the main air supply duct 6 of the ventilation therapy device enters the first pressure sensor 21 via the first solenoid valve 22; when the first solenoid valve 22 is powered on, the first solenoid valve 22 and the zeroing port 31 are electrically connected.

[0055] In this embodiment, the first pressure sensor 21 is a device or apparatus that can sense a pressure signal and convert the pressure signal into an available output electrical signal according to a certain rule. The first pressure sensor 21 can be any one of a gauge pressure sensor, a differential pressure sensor, an absolute pressure sensor, etc. The first solenoid valve 22 is an electromagnetic control device that switches between the three gas ports in the electromagnetic three-way valve through the energized state of the electromagnetic coil. The first solenoid valve 22 can be a two-phase three-way solenoid valve, a three-phase three-way solenoid valve, or a three-way solenoid valve with other phases, which is not limited in the embodiment of the utility model.

[0056] Through the above electrical structure, when it is necessary to detect the airway pressure of the main air supply airway 6 of the ventilation therapy device, the first solenoid valve 22 is powered off, so that the gas flowing from the main air supply airway 6 of the ventilation therapy device enters the first pressure sensor 21 through the first solenoid valve 22, and finally the real-time monitoring of the airway pressure is realized through the first solenoid valve 22, so as to avoid the airway pressure of the main air supply airway 6 of the ventilation therapy device being too high and causing damage to the main air supply airway 6 of the ventilation therapy device. When it is necessary to zero the airway pressure, the first solenoid valve 22 is powered on, so that the first solenoid valve 22 and the zeroing port 31 are electrically connected, and the airway connection between the main air supply airway 6 of the ventilation therapy device and the first solenoid valve 22 is interrupted, thereby realizing the zeroing of the airway pressure (i.e., the zeroing of the first pressure sensor 21).

[0057] In some feasible embodiments, when the near-patient exhalation port is detected and zeroed, the pressure collection component 2 includes a second pressure sensor 24, a second solenoid valve 25, and a second pressure port 26; the second pressure port 26 is connected between the near-patient exhalation port and the second solenoid valve 25, and the second pressure sensor 24 and the zeroing port 31 are both electrically connected to the second solenoid valve 25; when the second solenoid valve 25 is powered off, the gas flowing in from the near-patient exhalation port enters the second pressure sensor 24 via the second solenoid valve 25; when the second solenoid valve 25 is powered on, the second solenoid valve 25 is electrically connected to the zeroing port 31.

[0058] Similarly, in this embodiment, the second pressure sensor 24 is a device or apparatus that can sense the pressure signal and convert the pressure signal into an available output electrical signal according to a certain rule. The second pressure sensor 24 can be any one of a gauge pressure sensor, a differential pressure sensor, an absolute pressure sensor, etc. The second solenoid valve 25 is an electromagnetic control device that switches between the three gas ports in the electromagnetic three-way valve through the energized state of the electromagnetic coil. The second solenoid valve 25 can be a two-phase three-way solenoid valve, a three-phase three-way solenoid valve, or a three-way solenoid valve with other phases, which is not limited in the embodiment of the utility model.

[0059] Through the above electrical structure, when it is necessary to detect the airway pressure near the patient's exhalation port, the second solenoid valve 25 is powered off, so that the gas flowing from the patient's exhalation port enters the second pressure sensor 24 through the second solenoid valve 25, and finally the airway pressure is monitored in real time through the second solenoid valve 25, so as to avoid the discomfort of the patient caused by excessive airway pressure near the patient's exhalation port. When it is necessary to zero the airway pressure, the second solenoid valve 25 is powered on, so that the second solenoid valve 25 and the zeroing port 31 are electrically connected, and the airway connection between the patient's exhalation port and the second solenoid valve 25 is interrupted, thereby realizing the zeroing of the airway pressure (i.e., the zeroing of the second pressure sensor 24).

[0060] Regarding the above-mentioned specific structure for detecting and zeroing the main air supply duct 6 of the ventilation therapy equipment, in some embodiments, the first solenoid valve 22 is a two-phase three-way solenoid valve, and the first solenoid valve 22 includes a first air inlet, a first working port and a first conduction port; the first pressure port 23 is connected between the first air inlet and the main air supply duct 6 of the ventilation therapy equipment, the first working port is connected to the first pressure sensor 21, and the first conduction port is connected to the zeroing port 31; when the first solenoid valve 22 is powered off, the first air inlet and the first working port are connected; when the first solenoid valve 22 is powered on, the first working port and the first conduction port are connected.

[0061] In this embodiment, in the two-phase three-way solenoid valve, the first air inlet and the first conduction port are located on the same side, the first air inlet and the first working port are located on different sides, and the first conduction port and the first working port are located on different sides. The first solenoid valve 22 includes an electromagnetic coil and a valve core, and the phase position of the valve core is controlled by energizing the electromagnetic coil to change the flow state between the first air inlet, the first working port and the first conduction port. Specifically, when the electromagnetic coil is powered off, the valve core is located at the initial position, the first air inlet and the first working port are connected, and the first conduction port is closed, so that the gas flowing into the main air supply airway 6 of the ventilation therapy device flows to the first working port through the first air inlet, and then flows from the first working port to the first pressure sensor 21, and finally the real-time monitoring of the airway pressure is realized through the first electromagnetic valve 22. When the electromagnetic coil is energized, the electromagnetic force of the electromagnetic coil pushes the single-acting cylinder to move, which in turn causes the single-acting cylinder to push the valve core to move, so that the first air inlet is closed, the first working port and the first conducting port are connected, and the air path connection between the main air supply airway 6 of the ventilation therapy equipment and the first solenoid valve 22 is interrupted, thereby achieving zeroing of the airway pressure (i.e., zeroing of the first pressure sensor 21).

[0062] Regarding the above-mentioned specific structure for detecting and zeroing the near-patient exhalation port, in some embodiments, the second solenoid valve 25 is a two-phase three-way solenoid valve, and the second solenoid valve 25 includes a second air inlet, a second working port and a second conducting port; the second pressure port 26 is connected between the second air inlet and the near-patient exhalation port, the second working port is connected to the second pressure sensor 24, and the second conducting port is connected to the zeroing port 31; when the second solenoid valve 25 is powered off, the second air inlet and the second working port are connected; when the second solenoid valve 25 is powered on, the second working port and the second conducting port are connected.

[0063] Similarly, in this embodiment, in the two-phase three-way solenoid valve, the second air inlet and the second conduction port are located on the same side, the second air inlet and the second working port are located on different sides, and the second conduction port and the second working port are located on different sides. The second solenoid valve 25 includes a solenoid coil and a valve core, and the phase position of the valve core is controlled by energizing the solenoid coil to change the flow state between the second air inlet, the second working port and the second conduction port. Specifically, when the solenoid coil is powered off, the valve core is located in the initial position, and the second air inlet and the second working port are connected, so that the gas flowing in from the near-patient exhalation port flows to the second working port via the second air inlet, and then flows from the second working port to the second pressure sensor 24, and finally the real-time monitoring of the airway pressure is realized through the second solenoid valve 25. When the electromagnetic coil is energized, the electromagnetic force of the electromagnetic coil pushes the single-acting cylinder to move, which in turn pushes the valve core to move, so that the second air inlet is closed, the second working port and the second conducting port are connected, and the air path connection between the near-patient exhalation port and the second solenoid valve 25 is interrupted, thereby achieving zeroing of the proximal pressure (i.e., zeroing of the second pressure sensor 24).

[0064] In addition, in some feasible embodiments, the pressure detection and zeroing module also includes an air circuit control component 4 and a connecting air circuit; the connecting air circuit connects the main air supply airway 6 of the ventilation therapy equipment and the near-patient exhalation port, and the air circuit control component 4 is arranged in the connecting air circuit to control the ventilation state of the main air supply airway 6 of the ventilation therapy equipment to the near-patient exhalation port.

[0065] In this embodiment, since the connecting air path connects the main air supply airway 6 of the ventilation therapy device and the near-patient exhalation port, the air path control component 4 is electrically connected between the first pressure port 23 and the second pressure port 26, and is used to control the ventilation state of the main air supply airway 6 of the ventilation therapy device to the near-patient exhalation port. Therefore, the size of the airflow in the connecting air path can be controlled by the air path control component 4, and then the airflow flowing from the main air supply airway 6 of the ventilation therapy device to the near-patient exhalation port cleans the air path near the patient's exhalation port, thereby achieving the purpose of preventing condensed water from appearing in the air path near the patient's exhalation port. It should be noted that the air path control component 4 controls the ventilation state of the main air supply airway 6 of the ventilation therapy device to the near-patient exhalation port. There are two states, one is the state of connecting the air path and closing (i.e., whether the main air supply airway 6 of the ventilation therapy device supplies air to the near-patient exhalation port), and the other is the state of reduced airflow in the connecting air path (i.e., the main air supply airway 6 of the ventilation therapy device is a state of reduced airflow flowing to the near-patient exhalation port).

[0066] Optionally, in some embodiments, the gas circuit control component 4 includes an air block or a control gas circuit.

[0067] In one possible implementation, the gas circuit control element 4 includes an air block. In this embodiment, the air block is arranged in the communicating gas circuit, and the air block can be added in the gas circuit to achieve the purpose of real-time cleaning of the gas circuit near the patient's exhalation port by a small airflow. In another possible implementation, a solenoid valve can be arranged in the communicating gas circuit, and the solenoid valve can be a one-way solenoid valve, that is, the state of opening and closing the communicating gas circuit is achieved by the power-on state of the solenoid valve, thereby achieving the purpose of controllable cleaning of the exhalation port near the patient.

[0068] Furthermore, in some embodiments, the connecting gas path is an internal gas path of the module body 1 or an external pipeline of the module body 1. In this way, the setting position of the connecting gas path can be flexibly selected based on the gas path inside the module body 1 and the preparation process of the module body 1, thereby making the setting of the connecting gas path more flexible.

[0069] In some feasible embodiments, the number of first solenoid valves 22 is at least two, the number of second solenoid valves 25 is at least two, at least one of the at least two first solenoid valves 22 is connected to the second pressure sensor 24, and at least one of the at least two second solenoid valves 25 is connected to the first pressure sensor 21.

[0070] In this embodiment, the number of first solenoid valves 22 and the number of second solenoid valves 25 are increased to meet the detection requirements of the first pressure sensor 21 and the second pressure sensor 25, that is, the first pressure port 23 is connected between the main air supply duct 6 of the ventilation therapy device and each first solenoid valve 22, some of the first solenoid valves 22 are electrically connected to the first pressure sensor 21, and the remaining first solenoid valves 22 are electrically connected to the second pressure sensor 24. Similarly, the second pressure port 26 is connected between the near-patient exhalation port and each second solenoid valve 25, some of the second solenoid valves 25 are electrically connected to the second pressure sensor 25, and the remaining second solenoid valves 25 are electrically connected to the first pressure sensor 21. In this way, when the first pressure sensor 21 fails, the second pressure sensor 25 can continue to detect and zero the airway pressure. When the second pressure sensor 25 fails, the first pressure sensor 21 can continue to detect and zero the proximal pressure, so as to achieve the interchangeability of the functions of the first pressure sensor 21 and the second pressure sensor 25, and ensure the real-time detection and timely zeroing of the airway pressure and proximal pressure of the main air supply airway 6 of the ventilation therapy equipment, thereby improving the safety and timeliness of the pressure detection and zeroing module.

[0071] Next, the assembly between the pressure collection component 2, the pressure zero calibration component 3 and the module body 1 is specifically described as follows:

[0072] In some feasible embodiments, the pressure detection zero calibration module further includes a circuit board 5; the first pressure sensor 21 and the second pressure sensor 24 are mounted on the circuit board 5. In this way, by mounting the first pressure sensor 21 and the second pressure sensor 24 on the circuit board 5, the first pressure sensor 21, the second pressure sensor 24 and the circuit board 5 are electrically connected, so that the airway pressure of the main air supply airway 6 of the ventilation therapy device collected by the first pressure sensor 21 can be directly transmitted to the circuit board 5 for data processing and analysis, and the proximal pressure collected by the second pressure sensor 24 can be directly transmitted to the circuit board 5 for data processing and analysis.

[0073] Furthermore, in some embodiments, the first pressure sensor 21 and the second pressure sensor 24 are embedded in the module body 1, and the circuit board 5 covers the top of the module body 1. In this embodiment, not only can the first pressure sensor 21, the second pressure sensor 24 and the circuit board 5 be integrated on the module body 1 to realize the integration of the detection and zero calibration of the ventilation therapy equipment pressure, but also the first pressure sensor 21, the second pressure sensor 24 and the circuit board 5 can be detachable from the module body 1, thereby facilitating the subsequent disassembly and maintenance when the first pressure sensor 21 and the second pressure sensor 24 fail. At the same time, the pressure acquisition component 2 and the pressure zero calibration component 3 can be integrated separately, which simplifies the design difficulty of the pressure detection and zero calibration module, facilitates the optimization of the gas path in the pressure detection and zero calibration module, and makes the layout of the pressure detection and zero calibration module more flexible and convenient.

[0074] In some feasible embodiments, the first pressure port 23 and the second pressure port 26 are arranged on the first side of the module body 1, and the zeroing port 31 is arranged on the second side of the module body 1, wherein the first side and the second side are two intersecting or opposite sides of the module body 1. In this way, through this embodiment, the first pressure port 23, the second pressure port 26 and the zeroing port 31 can be integrated on the module body 1, which is conducive to ensuring the sealing reliability of the connection between the first pressure port 23, the zeroing port 31 and the first pressure sensor 21, and ensuring the sealing reliability of the connection between the second pressure port 26, the zeroing port 31 and the second pressure sensor 24.

[0075] Furthermore, the interior of the module body 1 includes a first gas circuit, a second gas circuit and a third gas circuit; the first solenoid valve 22 and the second solenoid valve are installed inside the module body 1, the first pressure port 23 is connected to the first solenoid valve 22 through the first gas circuit, the second pressure port 26 is connected to the second solenoid valve 25 through the second gas circuit, and the zeroing port 31 is connected to the first solenoid valve 22 and the second solenoid valve through the third gas circuit.

[0076] It should be noted that since the first air circuit, the second air circuit and the third air circuit are located inside the module body 1, the first solenoid valve 22 and the second solenoid valve are installed inside the module body 1, the first pressure port 23 is connected to the first solenoid valve 22 through the first air circuit, the second pressure port 26 is connected to the second solenoid valve 25 through the second air circuit, and the zeroing port 31 is connected to the first solenoid valve 22 and the second solenoid valve 25 through the third air circuit. In this case, the hose connection between the pressure collection component 2 and the pressure zeroing component 3 can be reduced, and the sealing reliability between the pressure collection component 2 and the pressure zeroing component 3 can be improved.

[0077] It should be noted that the ventilation therapy equipment used for the pressure detection and zeroing module provided in the embodiment of the utility model can be a ventilator, a high-flow oxygen therapy device, a ventilation therapy machine and other equipment, and the embodiment of the utility model does not limit this.

[0078] In summary, in the embodiment of the utility model, on the one hand, not only the airway pressure of the ventilation therapy device (the pressure corresponding to the main engine air supply airway of the ventilation therapy device) can be detected and zeroed, but also the proximal pressure (the pressure near the patient's exhalation port) can be detected and zeroed, and at the same time, the pressure acquisition component 2 and the pressure zeroing component 3 can be integrated and modularized to reduce the hose connection between the components of the pressure detection and zeroing module, thereby improving the sealing reliability between the pressure acquisition component 2 and the pressure zeroing component 3, reducing the risk of air leakage at the connection part of the pressure detection and zeroing module, and reducing the space occupied by the pressure detection and zeroing module, thereby improving the space utilization of the pressure detection and zeroing module. On the other hand, it is possible to integrate the pressure acquisition component 2 and the pressure zeroing component 3 separately, simplifying the design difficulty of the pressure detection and zeroing module, facilitating the optimization of the gas path in the pressure detection and zeroing module, and making the layout of the pressure detection and zeroing module more flexible and convenient.

[0079] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0080] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0081] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0082] The above is a detailed introduction to a pressure detection zeroing module provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A pressure detection and zeroing module for measuring and zeroing the pressure of a ventilation therapy device, characterized in that: The pressure detection zero calibration module comprises: A module body (1) and a pressure collection component (2) and a pressure zeroing component (3) electrically connected to the module body (1); The pressure collection component (2) and the pressure zeroing component (3) are electrically connected, the pressure collection component (2) is used to collect and detect the airway pressure and proximal pressure of the ventilation therapy device, and the pressure zeroing component (3) is used to zero the airway pressure and proximal pressure.

2. The pressure detection zero calibration module according to claim 1, characterized in that: The pressure acquisition component (2) comprises a first pressure sensor (21), a first solenoid valve (22) and a first pressure port (23); the pressure zero calibration component (3) comprises a zero calibration port (31); The first pressure port (23) is connected between the main air supply passage (6) of the ventilation therapy device and the first solenoid valve (22), and the first pressure sensor (21) and the zero calibration port (31) are both electrically connected to the first solenoid valve (22); When the first solenoid valve (22) is powered off, the gas flowing in from the main air supply passage (6) of the ventilation therapy device enters the first pressure sensor (21) via the first solenoid valve (22); When the first solenoid valve (22) is powered on, the first solenoid valve (22) and the zero calibration port (31) are electrically connected.

3. The pressure detection zero calibration module according to claim 2, characterized in that: The pressure acquisition component (2) comprises a second pressure sensor (24), a second solenoid valve (25) and a second pressure port (26); the pressure zero calibration component (3) comprises a zero calibration port (31); The second pressure port (26) is connected between the near-patient exhalation port and the second solenoid valve (25), and the second pressure sensor (24) and the zero calibration port (31) are both electrically connected to the second solenoid valve (25); When the second solenoid valve (25) is powered off, the gas flowing in from the near-patient exhalation port enters the second pressure sensor (24) via the second solenoid valve (25); When the second solenoid valve (25) is powered on, the second solenoid valve (25) and the zero calibration port (31) are electrically connected.

4. The pressure detection zero calibration module according to claim 2, characterized in that: The first solenoid valve (22) is a two-phase three-way solenoid valve, and the first solenoid valve (22) comprises a first air inlet, a first working port and a first conduction port; The first pressure port (23) is connected between the first air inlet and the main air supply passage (6) of the ventilation therapy device, the first working port is connected to the first pressure sensor (21), and the first conduction port is connected to the zero calibration port (31); When the first solenoid valve (22) is powered off, the first air inlet is connected to the first working port; When the first solenoid valve (22) is energized, the first working port and the first conducting port are in communication.

5. The pressure detection zero calibration module according to claim 3, characterized in that: The second solenoid valve (25) is a two-phase three-way solenoid valve, and the second solenoid valve (25) comprises a second air inlet, a second working port and a second conduction port; The second pressure port (26) is connected between the second air inlet and the near-patient exhalation port, the second working port is connected to the second pressure sensor (24), and the second conduction port is connected to the zero calibration port (31); When the second solenoid valve (25) is powered off, the second air inlet is connected to the second working port; When the second solenoid valve (25) is energized, the second working port and the second conduction port are communicated.

6. The pressure detection zero calibration module according to claim 3, characterized in that: The pressure detection zero calibration module also includes an air path control component (4) and a connecting air path; The connecting air path connects the main air supply airway (6) of the ventilation therapy device and the near-patient exhalation port, and the air path control component (4) is arranged in the connecting air path and is used to control the ventilation state of the main air supply airway (6) of the ventilation therapy device to the near-patient exhalation port.

7. The pressure detection zero calibration module according to claim 6, characterized in that: The gas path control component (4) comprises a gas block or a control gas path.

8. The pressure detection zero calibration module according to claim 6, characterized in that: The communicating gas path is an internal gas path of the module body (1) or an external pipeline of the module body (1).

9. The pressure detection zero calibration module according to claim 3, characterized in that: The number of the first solenoid valves (22) is at least two, the number of the second solenoid valves (25) is at least two, at least one of the at least two first solenoid valves (22) is connected to the second pressure sensor (24), and at least one of the at least two second solenoid valves (25) is connected to the first pressure sensor (21).

10. The pressure detection zero calibration module according to claim 3, characterized in that: The pressure detection zero calibration module also includes a circuit board (5); The first pressure sensor (21) and the second pressure sensor (24) are mounted on the circuit board (5).

11. The pressure detection zero calibration module according to claim 10, characterized in that: The first pressure sensor (21) and the second pressure sensor (24) are embedded in the module body (1), and the circuit board (5) covers the top of the module body (1).

12. The pressure detection zero calibration module according to claim 3, characterized in that: The first pressure port (23) and the second pressure port (26) are arranged on a first side surface of the module body (1), and the zero calibration port (31) is arranged on a second side surface of the module body (1), wherein the first side surface and the second side surface are two intersecting or opposite side surfaces of the module body (1).

13. The pressure detection zero calibration module according to claim 12, characterized in that: The interior of the module body (1) includes a first gas path, a second gas path and a third gas path; The first solenoid valve (22) and the second solenoid valve are installed inside the module body (1); the first pressure port (23) is connected to the first solenoid valve (22) through the first air path; the second pressure port (26) is connected to the second solenoid valve (25) through the second air path; and the zeroing port (31) is connected to the first solenoid valve (22) and the second solenoid valve through the third air path.

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