Ventilator humidification tank and ventilator system

Abstract

The application discloses a breathing machine humidification tank and a breathing machine system, and relates to the field of medical devices. The breathing machine humidification tank comprises a tank main body, a guide sleeve, an extendable water bag and an operating rod; the tank main body is provided with a highest water level line; the extendable water bag is arranged in the tank main body and is horizontally arranged with the top of the extendable water bag being higher than the highest water level line; the extendable water bag comprises an extendable sleeve and a hard end plate; one end of the extendable sleeve is connected with the tank main body; the hard end plate is connected with the other end of the extendable sleeve; the hard end plate is provided with a water suction and discharge hole which is lower than the highest water level line; the guide sleeve is arranged in the same direction as the extendable water bag; the guide sleeve is connected with the tank main body and is in position correspondence with the extendable water bag; the operating rod passes through the guide sleeve and is sealed with the guide sleeve; and the operating rod is connected with the hard end plate. The breathing machine humidification tank is installed on a breathing machine main machine and is provided with a temperature and humidity sensor and a push-pull structure to obtain the breathing machine system. The application can make the temperature and humidity of the inhaled humidified air of a patient reach the best.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a humidifier tank and ventilator system for a ventilator. Background Technology

[0002] The ventilator system includes a ventilator main unit, a humidifier, a humidification tank, and a ventilator tubing. Its operation involves the ventilator main unit outputting gas; the gas entering the humidification tank; the humidifier heating the humidification tank to accelerate water evaporation and mix with the gas in the ventilator main unit to form humidified gas, and the temperature of the humidified gas also increases; the humidified gas is delivered to the patient through the ventilator tubing, and the patient's exhaled gas is also returned to the ventilator main unit through the ventilator tubing.

[0003] Humidifiers have multiple settings to adjust the heating temperature. A higher heating temperature results in hotter water in the humidifier tank, leading to faster evaporation and higher humidity. Based on this principle, the temperature and humidity of the humidified gas output by ventilators currently change synchronously. Increasing humidity necessitates a higher temperature, and vice versa. When using a ventilator, the air temperature entering the nasal cavity is generally required to be 30℃–34℃, and the relative humidity 80%–90%. Since temperature and humidity can only change synchronously, often only one parameter reaches its optimal value. For example, if the temperature is suitable but the humidity is too low or too high, adjusting the humidity requires adjusting the temperature, but if the humidity is suitable, the temperature becomes unsuitable; conversely, if the humidity is suitable but the temperature is too low or too high, adjusting the temperature to a suitable level will result in an unsuitable humidity level. While these situations may be usable for patient oxygenation, they are not optimal.

[0004] A search revealed that patent application number 201710534518.7 discloses an intelligent control method and device for the internal temperature and humidity of a ventilator tubing. Specifically, the system includes a ventilator tubing. One end of the tubing is an air inlet connected to the humidifier's outlet; the other end is the patient end. A thermistor is located at the patient end of the tubing to detect the gas temperature. A heating wire and a thermistor signal line are mounted on the outer wall of the tubing. A first connector is located at the air inlet, and a second connector is located at the humidifier's outlet. The first and second connectors are electrically connected to connect the heating wire and the thermistor signal line to the main control unit. A temperature and humidity sensor is also located at the humidifier's outlet to detect the temperature and humidity of the gas entering the tubing. The main control unit calculates the humidity of the gas at the outlet based on the temperature and humidity entering the tubing and the temperature at the patient end, and adjusts the heating power of the heating wire and the humidification power of the humidifier according to the temperature and humidity at the patient end, thereby controlling the humidity and temperature at the tubing outlet.

[0005] The aforementioned patent, like existing technologies, regulates the temperature and humidity of the humidified gas by adjusting the heating temperature of the humidifier. The difference lies in the addition of a heating guidewire to heat the ventilator tubing, further increasing the temperature of the humidified gas. This patent can solve the problem of excessively low humidified gas temperature delivered to the patient; however, it is ineffective if the humidity of the humidified gas is appropriate but the temperature is too high. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a humidifier canister for a ventilator that facilitates the optimal adjustment of the temperature and humidity of the output gas.

[0007] The technical solution adopted to solve the above problems is as follows: The humidifier canister of the ventilator includes a canister body, a guide sleeve, a telescopic water bladder, and an operating rod; the canister body has a maximum water level line; the telescopic water bladder is located inside the canister body, the telescopic water bladder is horizontally set and its top is higher than the maximum water level line, the telescopic water bladder includes a telescopic sleeve and a rigid end plate, one end of the telescopic sleeve is connected to the canister body, and the rigid end plate is connected to the other end of the telescopic sleeve, the rigid end plate has suction and drainage holes, the suction and drainage holes are lower than the maximum water level line; the guide sleeve is set in the same direction as the telescopic water bladder, the guide sleeve is connected to the canister body and corresponds to the position of the telescopic water bladder; the operating rod passes through the guide sleeve and cooperates with and seals the guide sleeve, the operating rod is connected to the rigid end plate.

[0008] Furthermore, the telescopic sleeve is made of silicone and has corrugated pleats.

[0009] Furthermore, the humidifier canister includes a membrane sleeve that covers the portion of the operating lever that protrudes from the canister body. The two ends of the membrane sleeve are connected to a guide sleeve and the operating lever, respectively.

[0010] Furthermore, the top of the tank body has an air inlet pipe, an exhaust pipe, and a water inlet pipe, while the bottom of the tank body has a metal base plate.

[0011] Another technical problem that this invention aims to solve is: a ventilator system that can adjust the temperature and humidity of the output gas to the optimal level.

[0012] The technical solution adopted to solve the above problems is as follows: The ventilator system includes a ventilator main unit, a humidifier, a humidifier tank, and a ventilator tubing. The humidifier is installed on the ventilator main unit, the humidifier tank is installed on the humidifier, and the ventilator tubing is connected to the ventilator main unit and the humidifier tank. It also includes a temperature and humidity sensor. The humidifier tank is the aforementioned ventilator humidifier tank. The humidifier includes a humidifier body and a push-pull structure. The push-pull structure is connected to the humidifier body and can drive the operating lever. The temperature and humidity sensor is installed on the end of the ventilator tubing closest to the patient. The temperature and humidity sensor values ​​are transmitted to the ventilator main unit, and the ventilator main unit can control the push-pull structure according to the temperature and humidity sensor signals.

[0013] Furthermore, the humidifier body has a mounting groove arranged in the front-to-back direction; the lower end of the tank body has a tank flange that inserts into the mounting groove; the telescopic water bladder and the operating rod are both arranged in the left-to-right direction, and the operating rod has a socket arranged in the front-to-back direction; the push-pull structure is located at the rear of the humidifier body, and the push-pull structure includes an electric telescopic rod, a guide sleeve, a guide rod, and a drive rod. The electric telescopic rod, the guide sleeve, and the guide rod are arranged in the left-to-right direction, the guide rod is inserted into the guide sleeve and cooperates with the guide sleeve, and the drive rod is arranged in the front-to-back direction and connects to the electric telescopic rod and the guide rod, and the drive rod is inserted into the socket.

[0014] Furthermore, the ventilator tube is equipped with a sensor mounting structure, which includes a mounting sleeve. The temperature and humidity sensor is threadedly connected to the mounting sleeve, and the temperature and humidity sensor communicates wirelessly with the ventilator host.

[0015] Furthermore, the ventilator tube is equipped with a sensor mounting structure, which includes a mounting sleeve, an L-shaped plate, and a clamping screw. The L-shaped plate is connected to the mounting sleeve, and the clamping screw is threadedly connected to the L-shaped plate. The end of the temperature and humidity sensor has a sensor flange. The temperature and humidity sensor is inserted into the mounting sleeve, and the sensor flange abuts against the mounting sleeve. The clamping screw clamps the temperature and humidity sensor. The temperature and humidity sensor is connected to the ventilator main unit via a circuit.

[0016] The beneficial effects of this invention are: Based on the existing humidification tank of a ventilator, this invention adds a guide sleeve, a telescopic water bladder, and an operating lever. Pushing or pulling the operating lever can move the rigid end plate, causing the telescopic water bladder to extend or retract.

[0017] When the telescopic water bladder extends, water from the main body of the tank is drawn into it, passing through the suction and discharge holes. Based on the principle that evaporation occurs at the surface of a liquid, and that the larger the surface area, the faster the evaporation, the water in the main body is drawn into the telescopic water bladder. This bladder occupies space within the main body, reducing the surface area of ​​the water and slowing evaporation. Meanwhile, the water inside the telescopic water bladder is in a nearly enclosed space, resulting in minimal evaporation. Therefore, at the same water temperature, the extension of the telescopic water bladder reduces the humidity of the humidified gas.

[0018] Conversely, when the telescopic water bladder shortens, the water inside is discharged into the tank body, and the water passes through the suction and discharge holes. The telescopic water bladder occupies less space within the tank body, increasing the surface area of ​​the water inside and accelerating evaporation. Therefore, at the same water temperature, shortening the telescopic water bladder increases the humidity of the humidified gas.

[0019] As can be seen, this invention can independently adjust the humidity of the humidified gas. In use, the heating temperature of the humidifier canister is first set to optimize the temperature of the humidified gas inhaled by the patient. If the humidity is also optimal at this point, the retractable water bag is not adjusted. If the humidity is not optimal, the retractable water bag is adjusted to regulate the humidity independently. This ensures that both the temperature and humidity of the humidified gas inhaled by the patient are optimal, which is beneficial for maintaining the patient's life and recovery. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a humidifier tank for a ventilator;

[0021] Figure 2 This is a magnified view of the retractable water bladder.

[0022] Figure 3 yes Figure 1 AA section view;

[0023] Figure 4 This is a diagram of a ventilator system;

[0024] Figure 5 This is the front view of the humidifier;

[0025] Figure 6 This is a top view of the humidifier;

[0026] Figure 7 This is a diagram showing how a temperature and humidity sensor can be installed.

[0027] Figure 8 This is a diagram showing another installation method for temperature and humidity sensors;

[0028] The components in the diagram are labeled as follows: 1. Humidifier tank for ventilator; 11. Tank body; 11. Maximum water level line; 111. Inlet pipe; 112. Exhaust pipe; 113. Water inlet pipe; 114. Metal base plate; 115. Tank flange; 116. Telescopic water bladder; 12. Telescopic sleeve; 121. Rigid end plate; 122. Suction / drainage hole; 1221. Guide sleeve; 13. Operating lever; 14. Insertion hole; 141. Membrane sleeve; 15. Ventilator main unit; 2. Humidifier; 3. Humidifier body; 31. Mounting groove; 311. Push-pull structure; 32. Electric telescopic rod; 321. Guide sleeve; 322. Guide rod; 323. Drive rod; 324. Ventilator tubing; 4. Mounting sleeve; 41. L-shaped plate; 42. Clamping screw; 43. Temperature and humidity sensor; 5. Sensor flange; 51. Wiring; 52. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1 to 3As shown, the humidifier tank 1 of the ventilator includes a tank body 11, a guide sleeve 13, a telescopic water bladder 12, and an operating lever 14. The tank body 11 has a maximum water level line 111. The telescopic water bladder 12 is located inside the tank body 11, and is horizontally positioned with its top higher than the maximum water level line 111. The telescopic water bladder 12 includes a telescopic sleeve 121 and a rigid end plate 122. One end of the telescopic sleeve 121 is connected to the tank body 11, and the rigid end plate 122 is connected to the other end of the telescopic sleeve 121. The rigid end plate 122 has suction and drainage holes 1221, which are lower than the maximum water level line 111. The guide sleeve 13 is arranged in the same direction as the telescopic water bladder 12, and is connected to the tank body 11 and corresponds to the position of the telescopic water bladder 12. The operating lever 14 passes through the guide sleeve 13, cooperates with the guide sleeve 13, and is sealed. The operating lever 14 is connected to the rigid end plate 122. The telescopic sleeve 121 may be made of silicone and has corrugated pleats.

[0031] This humidifier 1 is based on the existing humidifier 1 and adds a guide sleeve 13, a telescopic water bag 12, and an operating lever 14. Pushing or pulling the operating lever 14 can move the rigid end plate 122 to extend or retract the telescopic water bag 12.

[0032] When the telescopic water bladder 12 extends, water from the main body 11 is drawn into it, passing through the suction and discharge holes 1221. Based on the principle that evaporation occurs at the surface of a liquid, and that the larger the surface area, the faster the evaporation, the water in the main body 11 is drawn into the telescopic water bladder 12. The telescopic water bladder 12 occupies space within the main body 11, reducing the surface area of ​​the water and slowing down evaporation. Meanwhile, the water inside the telescopic water bladder 12 is in a essentially enclosed space, resulting in minimal evaporation. Therefore, at the same water temperature, the extension of the telescopic water bladder 12 reduces the humidity of the humidified gas.

[0033] Conversely, when the telescopic water bladder 12 is shortened, the water inside the bladder is discharged into the tank body 1, and the water passes through the suction and discharge holes 1221. The space occupied by the telescopic water bladder 12 within the tank body 11 decreases, increasing the surface area of ​​the water inside the tank body 11 and accelerating evaporation. Therefore, at the same water temperature, shortening the telescopic water bladder 12 increases the humidity of the humidified gas.

[0034] As can be seen, this invention can independently adjust the humidity of the humidified gas. During use, the heating temperature of the humidifier canister is first set to ensure the temperature of the humidified gas inhaled by the patient is optimal. If the humidity is also optimal at this point, the retractable water bag 12 is not adjusted. If the humidity is not optimal, the retractable water bag 12 is adjusted to regulate the humidity independently. This ensures that both the temperature and humidity of the humidified gas inhaled by the patient are optimal, which is beneficial for maintaining the patient's life and recovery.

[0035] The cross-sectional area of ​​the main body 11 of this invention should be larger than that of the prior art to allow for adjustment. The top of the telescopic water bladder 12 is higher than the highest water level line 111, meaning that when the humidifier canister is in use, the water level inside the main body 11 is lower than the top of the telescopic water bladder 12. This allows the telescopic water bladder 12 to extend and retract, adjusting the surface area of ​​the water inside the main body 11. The water level inside the main body 11 is higher than the suction and discharge holes 1221. The operating rod 14 passes through the guide sleeve 13 and engages with and seals with the guide sleeve 13. The guiding effect of the guide sleeve 13 ensures that the operating rod 14 can only move inward and outward, not swing. The operating rod 14 is connected to the rigid end plate 122, preventing the telescopic water bladder 12 from swinging; it can only extend and retract. A sealing ring can be provided between the operating rod 14 and the guide sleeve 13 to ensure a tight seal and prevent water leakage.

[0036] Furthermore, the preferred humidifier canister includes a membrane sleeve 15, which is fitted over the portion of the operating lever 14 that protrudes from the canister body 11. The two ends of the membrane sleeve 15 are connected to the guide sleeve 13 and the operating lever 14, respectively. The function of the membrane sleeve 15 is to protect the operating lever 14 from contamination, thereby preventing contamination of the water in the canister body 11.

[0037] Other structures of the tank body 11 are as in the prior art, for example, the top of the tank body 11 has an air inlet pipe 112, an exhaust pipe 113, and a water inlet pipe 114, and the bottom of the tank body 11 has a metal base plate 115. The air inlet pipe 112 and the exhaust pipe 113 are used for inputting and outputting gas, the water inlet pipe 114 is used for replenishing water into the tank body 11, and the metal base plate 115 is used to contact the humidifier 3 to achieve heating.

[0038] The humidifier tank 1 can be used in existing ventilator systems, and the humidity can be adjusted by manually pushing and pulling the control lever 14.

[0039] In order to automatically adjust the temperature and humidity of the humidified gas inhaled by the patient, the present invention can be further improved as follows: Figures 4 to 8 As shown: The ventilator system includes a ventilator main unit 2, a humidifier 3, a ventilator humidification tank 1, and a ventilator tubing 4. The humidifier 3 is mounted on the ventilator main unit 2, and the ventilator humidification tank 1 is mounted on the humidifier 3. The ventilator tubing 4 is connected to the ventilator main unit 2 and the ventilator humidification tank 1. It also includes a temperature and humidity sensor 5. The ventilator humidification tank 1 is the aforementioned ventilator humidification tank 1. The humidifier 3 includes a humidifier body 31 and a push-pull structure 32. The push-pull structure 32 is connected to the humidifier body 31 and can drive the operating lever 14. The temperature and humidity sensor 5 is mounted on the end of the ventilator tubing 4 closest to the patient. The measured value of the temperature and humidity sensor 5 is transmitted to the ventilator main unit 2, and the ventilator main unit 2 can control the push-pull structure 32 according to the signal from the temperature and humidity sensor 5.

[0040] The structure of the ventilator main unit 2 is basically the same as that of existing technology. The main difference is the addition of temperature and humidity control programs in the controller. Specifically, the temperature and humidity sensor 5 transmits the measured values ​​to the ventilator main unit 2 and compares them with the set values. First, temperature adjustment is performed, that is, controlling the heating temperature of the humidifier 3; after the temperature is adjusted to the set value, humidity adjustment is performed, that is, controlling the push-pull structure 32 to drive the operating lever 14. The control logic and program are relatively simple.

[0041] The humidifier 3 is specifically configured as follows: the humidifier body 31 has a mounting groove 311 arranged in the front-to-back direction; the lower end of the tank body 11 has a tank flange 116, which is inserted into the mounting groove 311; the telescopic water bladder 12 and the operating rod 14 are both arranged in the left-to-right direction, and the operating rod 14 has a socket 141 arranged in the front-to-back direction; the push-pull structure 32 is located behind the humidifier body 31, and the push-pull structure 32 includes an electric telescopic rod 321, a guide sleeve 322, a guide rod 323, and a drive rod 324. The electric telescopic rod 321, the guide sleeve 322, and the guide rod 323 are arranged in the left-to-right direction, the guide rod 323 is inserted into the guide sleeve 322 and cooperates with the guide sleeve 322, and the drive rod 324 is arranged in the front-to-back direction and is connected to the electric telescopic rod 321 and the guide rod 323. The drive rod 324 is inserted into the socket 141.

[0042] The procedure for installing the humidifier canister 1 onto the humidifier 3 is as follows: align the canister flange 116 with the mounting groove 311 and insert it into the mounting groove 311; during the insertion process, the drive rod 324 is also inserted into the socket 141; if the socket 141 is not aligned with the drive rod 324 during this process, the drive rod 324 can be manually pushed or pulled for adjustment.

[0043] The extension and retraction of the electric telescopic rod 321 drives the drive rod 324 to move left and right, thereby automatically pushing and pulling the operating rod 14. The guide sleeve 322 and the guide rod 323 are used to keep the drive rod 324 in the front-back direction.

[0044] Temperature and humidity sensor 5 is an existing technology product, and its connection to ventilator tubing 4 can be described as follows: Figure 7 As shown, a sensor mounting structure is provided on the ventilator tube 4. The sensor mounting structure includes a mounting sleeve 41, and a temperature and humidity sensor 5 is threadedly connected to the mounting sleeve 41. The temperature and humidity sensor 5 communicates wirelessly with the ventilator host 2.

[0045] It can also be like Figure 8As shown, a sensor mounting structure is provided on the ventilator tube 4. The sensor mounting structure includes a mounting sleeve 41, an L-shaped plate 42, and a clamping screw 43. The L-shaped plate 42 is connected to the mounting sleeve 41, and the clamping screw 43 is threadedly connected to the L-shaped plate 42. The end of the temperature and humidity sensor 5 has a sensor flange 51. The temperature and humidity sensor 5 is inserted into the mounting sleeve 41, and the sensor flange 51 abuts against the mounting sleeve 41. The clamping screw 43 clamps the temperature and humidity sensor 5. The temperature and humidity sensor 5 is connected to the ventilator main unit 2 through a line 52.

Claims

1. A humidifier container for a ventilator, characterized in that: The system includes a tank body (11), a guide sleeve (13), a telescopic water bladder (12), and an operating lever (14). The tank body (11) has a maximum water level line (111). The telescopic water bladder (12) is located inside the tank body (11), and is horizontally positioned with its top higher than the maximum water level line (111). The telescopic water bladder (12) includes a telescopic sleeve (121) and a rigid end plate (122). One end of the telescopic sleeve (121) is connected to the tank body (11), and the rigid end plate (122) is connected to the telescopic sleeve (121). The other end of the shrink sleeve (121) is connected to a rigid end plate (122) with a suction and drainage hole (1221) that is lower than the highest water level line (111). The guide sleeve (13) is set in the same direction as the telescopic water bladder (12). The guide sleeve (13) is connected to the tank body (11) and corresponds to the position of the telescopic water bladder (12). The operating rod (14) passes through the guide sleeve (13) and cooperates with and seals the guide sleeve (13). The operating rod (14) is connected to the rigid end plate (122).

2. The humidifier tank for a ventilator according to claim 1, characterized in that: The telescopic sleeve (121) is made of silicone and has corrugated pleats.

3. The humidifier tank for a ventilator according to claim 2, characterized in that: Includes a membrane sleeve (15), which is fitted over the part of the operating rod (14) that protrudes from the tank body (11). The two ends of the membrane sleeve (15) are connected to the guide sleeve (13) and the operating rod (14) respectively.

4. The humidifier tank for a ventilator according to claim 3, characterized in that: The top of the tank body (11) has an air inlet pipe (112), an exhaust pipe (113) and a water inlet pipe (114), and the bottom of the tank body (11) has a metal base plate (115).

5. A ventilator system, comprising a ventilator main unit (2), a humidifier (3), a ventilator humidification tank (1), and a ventilator tubing (4), wherein the humidifier (3) is mounted on the ventilator main unit (2), the ventilator humidification tank (1) is mounted on the humidifier (3), and the ventilator tubing (4) is connected to the ventilator main unit (2) and the ventilator humidification tank (1); characterized in that: Includes a temperature and humidity sensor (5); the humidifier tank (1) is the humidifier tank (1) of any one of claims 1 to 4; the humidifier (3) includes a humidifier body (31) and a push-pull structure (32), the push-pull structure (32) is connected to the humidifier body (31), and the push-pull structure (32) can drive the operating lever (14); the temperature and humidity sensor (5) is installed on the end of the ventilator tube (4) near the patient, the measured value of the temperature and humidity sensor (5) is transmitted to the ventilator host (2), and the ventilator host (2) can control the push-pull structure (32) according to the signal of the temperature and humidity sensor (5).

6. The ventilator system according to claim 5, characterized in that: The humidifier body (31) has a mounting groove (311) arranged in the front-to-back direction; the lower end of the tank body (11) has a tank flange (116), which is inserted into the mounting groove (311); the telescopic water bladder (12) and the operating rod (14) are both arranged in the left-to-right direction; the operating rod (14) has a socket (141) arranged in the front-to-back direction; the push-pull structure (32) is located behind the humidifier body (31), and the push-pull structure (32) includes an electric telescopic rod. (321), guide sleeve (322), guide rod (323) and drive rod (324), the electric telescopic rod (321), guide sleeve (322) and guide rod (323) are arranged in the left and right direction, the guide rod (323) is inserted into the guide sleeve (322) and cooperates with the guide sleeve (322), the drive rod (324) is arranged in the front and back direction and is connected to the electric telescopic rod (321) and guide rod (323), and the drive rod (324) is inserted into the socket (141).

7. The ventilator system according to claim 6, characterized in that: The ventilator tube (4) is equipped with a sensor mounting structure, which includes a mounting sleeve (41), a temperature and humidity sensor (5) which is threadedly connected to the mounting sleeve (41), and the temperature and humidity sensor (5) communicates wirelessly with the ventilator host (2).

8. The ventilator system according to claim 6, characterized in that: The ventilator tube (4) is provided with a sensor mounting structure, which includes a mounting sleeve (41), an L-shaped plate (42) and a clamping screw (43). The L-shaped plate (42) is connected to the mounting sleeve (41), and the clamping screw (43) is threadedly connected to the L-shaped plate (42). The end of the temperature and humidity sensor (5) has a sensor flange (51). The temperature and humidity sensor (5) is inserted into the mounting sleeve (41), and the sensor flange (51) abuts against the mounting sleeve (41). The clamping screw (43) clamps the temperature and humidity sensor (5). The temperature and humidity sensor (5) is connected to the ventilator host (2) through a line (52).

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