Filtering device of breathing machine

Abstract

The utility model relates to a breathing machine filtering device which comprises two filtering tanks, two connecting pipes are connected between the two filtering tanks, the two connecting pipes are arranged on the upper side and the lower side respectively, two valves are symmetrically arranged on the connecting pipes, and an air outlet pipe and an air inlet pipe are connected to the outer surfaces of the two connecting pipes and located between the two valves respectively. A filter element is inserted into the filtering tank, a circular end cover is arranged at the top of the filter element, an annular end cover is arranged at the bottom of the filter element, and an abutting ring is mounted in the filtering tank; positioning mechanisms capable of positioning the circular end cover are arranged on two sides of the upper surface of the filtering tank. When the filter element needs to be replaced, only the filter element in the standby state needs to be switched into the use state, so that the filter element can be replaced, normal breathing of a patient is guaranteed, potential safety hazards are avoided under the condition that the breathing machine is not stopped, the filter element can be conveniently replaced through the arrangement of the positioning mechanism, the operation difficulty of medical staff is reduced, and the working efficiency is improved. The working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a filter device for a ventilator. Background Technique

[0002] A ventilator is a medical device, also known as a respiratory support device or a breathing assistance device. It is used to treat various respiratory problems or diseases, such as sleep apnea, chronic obstructive pulmonary disease, asthma, pneumonia, etc. The ventilator helps the patient breathe by providing air pressure or oxygen, usually connected to the patient's respiratory system through a face mask, nasal mask or tube. This device can maintain the patient's respiratory function and keep the oxygen level to ensure that all organs of the body receive sufficient oxygen supply, and it is an important tool for treating respiratory diseases or providing first aid.

[0003] The filter device of the ventilator is an important part of the ventilator. The filter device is directly related to the quality of the gas that the user breathes. After the filter element inside the filter device has been used for a period of time, due to the accumulation of dust and other impurities on its surface, it will directly affect the quality of the output air. Therefore, it needs to be replaced.

[0004] However, when replacing the filter element of the existing filter device, the ventilator needs to be suspended, which may cause the patient to be unable to obtain the necessary oxygen supply during this period. Especially for patients who need continuous respiratory support, it may lead to insufficient oxygen supply, resulting in dyspnea or other respiratory problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a filter device for a ventilator that can replace the filter element without suspending the ventilator.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows.

[0007] A filter device for a ventilator includes two filter tanks. There are two connecting pipes connected between the two filter tanks, and the two connecting pipes are respectively arranged on the upper and lower sides. Two valves are symmetrically arranged on the connecting pipes. An air outlet pipe and an air inlet pipe are respectively connected to the outer surfaces of the two connecting pipes and between the two valves. A filter element is inserted into the interior of the filter tank. A circular end cover is arranged at the top of the filter element, and an annular end cover is arranged at the bottom of the filter element. An abutting ring is installed inside the filter tank. Positioning mechanisms capable of positioning the circular end cover are arranged on both sides of the upper surface of the filter tank.

[0008] It can be seen that during use, by controlling the opening state of the valve, one filter element is in the use state and the other is in the standby state. When the filter element needs to be replaced, only the filter element in the standby state needs to be switched to the use state. Thus, the replacement of the filter element can be completed without stopping the ventilator, ensuring the normal breathing of the patient, avoiding potential safety hazards, and through the setting of the positioning mechanism, it is convenient to replace the filter element, reducing the operation difficulty of medical staff and improving work efficiency.

[0009] Furthermore, the positioning mechanism includes a first fixing block installed on the upper surface of the filter tank. Two sliding rods penetrate through the interior of the first fixing block. A pressing block is commonly installed at the ends of the two sliding rods. A jack is formed on the side surface of the pressing block. A second fixing block is installed on the upper surface of the filter tank. A plug rod is inserted into the interior of the second fixing block, and the plug rod is in plug-in fit with the jack. A shoulder is provided on the outer surface of the plug rod. A first spring is sleeved on the outer surface of the plug rod, and the two ends of the first spring are respectively abutted against the shoulder and the second fixing block.

[0010] When replacing the filter element, the plug rod can be pulled to extract its end from the jack. Then, the pressing block is moved to the outside of the circular end cover. At this time, the end of the plug rod is pressed tightly against the side surface of the pressing block under the elastic force of the first spring. Then, the filter element is taken out from the interior of the filter tank. When the new filter element is inserted into the filter tank, the annular end cover at its bottom is pressed tightly against the upper surface of the abutting ring. At this time, the pressing block can be pushed to slide back to the upper surface of the circular end cover to position the circular end cover. As the pressing block slides, when the jack is aligned with the plug rod again, the compressed first spring releases its elastic force, thereby driving the plug rod to insert into the jack to fix the pressing block. At this time, the circular end cover cannot move upward, thus achieving the purpose of rapid installation.

[0011] Furthermore, a top plate is installed at the end of the sliding rod away from the pressing block. A second spring is sleeved on the outer surface of the sliding rod, and the two ends of the second spring are respectively connected to the top plate and the first fixing block.

[0012] When the pressing block is slid to the upper surface of the circular end cover, the sliding rod drives the top plate to compress the second spring. When the end of the plug rod is extracted from the jack, the compressed second spring releases its elastic force, thereby driving the pressing block to slide towards the first fixing block and leave the upper surface of the circular end cover, thus improving the disassembly efficiency of the filter element.

[0013] Furthermore, a groove is formed on the upper surface of the filter tank, and a first sealing gasket is arranged inside the groove.

[0014] When installing the filter element, the circular end cover enters the groove, and its lower surface is mutually pressed against the first sealing gasket, which can achieve the sealing effect and prevent air leakage from affecting the supply volume to the patient.

[0015] Further, a second gasket is provided on the upper surface of the abutting ring.

[0016] When installing the filter element, the annular end cover at its bottom is pressed tightly on the second gasket, which can achieve the sealing function and prevent unfiltered air from being input to the patient.

[0017] Further, a hand-held block is installed on the upper surface of the circular end cover, and a rubber pad is provided on the outer surface of the hand-held block.

[0018] Through the setting of the hand-held block, it is convenient to take the filter element, and through the setting of the rubber pad, the friction with the hand can be increased to avoid slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a partial cross-sectional structural schematic diagram of the present utility model;

[0021] Figure 3 is Figure 1 an enlarged schematic diagram of A in

[0022] Figure 4 is Figure 2 an enlarged schematic diagram of B in

[0023] In the figure: 100, filter tank; 101, connecting pipe; 102, valve; 103, outlet pipe; 104, inlet pipe; 105, filter element; 106, circular end cover; 107, annular end cover; 108, abutting ring; 200, positioning mechanism; 201, first fixing block; 202, sliding rod; 203, pressing block; 204, jack; 205, second fixing block; 206, inserting rod; 207, shoulder; 208, first spring; 300, top plate; 301, second spring; 400, groove; 401, first gasket; 500, second gasket; 600, hand-held block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present utility model will be described in detail below with reference to the accompanying drawings.

[0025] As Figures 1-4As shown in the figure, a ventilator filtering device includes two filtering tanks 100. There are two connecting pipes 101 connected between the two filtering tanks 100, and the two connecting pipes 101 are respectively arranged on the upper and lower sides. Two valves 102 are symmetrically arranged on the connecting pipes 101. An air outlet pipe 103 and an air inlet pipe 104 are respectively connected to the outer surfaces of the two connecting pipes 101 and located between the two valves 102. A filter element 105 is inserted into the interior of the filtering tank 100. A circular end cover 106 is arranged at the top of the filter element 105, and an annular end cover 107 is arranged at the bottom of the filter element 105. An abutting ring 108 is installed inside the filtering tank 100. Positioning mechanisms 200 capable of positioning the circular end cover 106 are arranged on both sides of the upper surface of the filtering tank 100.

[0026] During use, first, by controlling the opening state of the valve 102, the air entering from the air inlet pipe 104 can only enter one filtering tank 100. After the air enters the filtering tank 100 from the connecting pipe 101, it penetrates from the outside to the inside of the filter element 105 and is finally discharged from the air outlet pipe 103. When the filter element 105 in use needs to be replaced, the valve 102 can be operated to use the spare filter element 105 for filtering, and then the filter element 105 to be replaced can be replaced. During the entire replacement process, the patient's breathing is not affected, avoiding potential safety hazards. Moreover, through the setting of the positioning mechanism 200, it is convenient to replace the filter element 105, reducing the operation difficulty of medical staff and improving work efficiency. It is worth noting that when switching the use of the filter element 105, the operation of the valve 102 should follow the principle of "open first and then close", that is, first open the valve 102 in the closed state, and then close the valve 102 in the open state to ensure that the air circulation is not interrupted, that is, to ensure that the patient's breathing is not affected.

[0027] Specifically, the positioning mechanism 200 includes a first fixing block 201 installed on the upper surface of the filter tank 100. Two sliding rods 202 penetrate through the interior of the first fixing block 201. A pressing block 203 is commonly installed at the ends of the two sliding rods 202. A jack 204 is formed on the side surface of the pressing block 203. A second fixing block 205 is installed on the upper surface of the filter tank 100. A plug rod 206 is inserted into the interior of the second fixing block 205, and the plug rod 206 is in plug-in fit with the jack 204. A shoulder 207 is provided on the outer surface of the plug rod 206. A first spring 208 is sleeved on the outer surface of the plug rod 206. The two ends of the first spring 208 are respectively abutted against the shoulder 207 and the second fixing block 205. When replacing the filter element 105, the plug rod 206 can be pulled to extract its end from the jack 204. Then, the pressing block 203 is moved to the outside of the circular end cover 106. At this time, the end of the plug rod 206 is abutted against the side surface of the pressing block 203 under the elastic force of the first spring 208. Then, the filter element 105 is taken out from the interior of the filter tank 100. When the new filter element 105 is inserted into the filter tank 100, the annular end cover 107 at its bottom is abutted against the upper surface of the abutting ring 108. At this time, the pressing block 203 can be pushed to slide back onto the upper surface of the circular end cover 106 to position the circular end cover 106. As the pressing block 203 slides, when the jack 204 is aligned with the plug rod 206 again, the compressed first spring 208 releases its elastic force, thereby driving the plug rod 206 to insert into the jack 204 to fix the pressing block 203. At this time, the circular end cover 106 cannot move upward, thus achieving the purpose of rapid installation.

[0028] Specifically, a top plate 300 is installed at the end of the sliding rod 202 away from the pressing block 203. A second spring 301 is sleeved on the outer surface of the sliding rod 202. The two ends of the second spring 301 are respectively connected to the top plate 300 and the first fixing block 201. When the pressing block 203 is slid to the upper surface of the circular end cover 106, the sliding rod 202 drives the top plate 300 to compress the second spring 301. When the end of the plug rod 206 is extracted from the jack 204, the compressed second spring 301 releases its elastic force, thereby driving the pressing block 203 to slide in the direction of the first fixing block 201 and leave the upper surface of the circular end cover 106, thus improving the disassembly efficiency of the filter element 105.

[0029] Specifically, a groove 400 is formed on the upper surface of the filter tank 100. A first gasket 401 is provided inside the groove 400. When installing the filter element 105, the circular end cover 106 enters the groove 400, and its lower surface is pressed against the first gasket 401, which can achieve a sealing effect and prevent air leakage from affecting the supply to the patient.

[0030] Specifically, a second gasket 500 is provided on the upper surface of the abutting ring 108. When installing the filter element 105, the annular end cover 107 at its bottom is pressed tightly on the second gasket 500, which can achieve a sealing effect and prevent unfiltered air from being input to the patient.

[0031] Specifically, a hand-held block 600 is installed on the upper surface of the circular end cover 106. A rubber pad is provided on the outer surface of the hand-held block 600. Through the setting of the hand-held block 600, it is convenient to take the filter element 105. And through the setting of the rubber pad, the friction with the hand can be increased to avoid slipping.

[0032] The above is a detailed description of the present utility model in combination with specific embodiments. It cannot be determined that the specific implementation manners of the present utility model are only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several equivalent substitutions or obvious variations are made, and the performance or use is the same, and all should be regarded as belonging to the patent protection scope determined by the claims submitted for the present utility model.

Claims

1. A breathing machine filter device, comprising two filter tanks (100), characterized in that: Two connecting pipes (101) are connected between the two filter tanks (100), and the two connecting pipes (101) are respectively arranged at the upper and lower sides, two valves (102) are symmetrically arranged on the connecting pipes (101), and an air outlet pipe (103) and an air inlet pipe (104) are respectively connected to the outer surfaces of the two connecting pipes (101) and located between the two valves (102); A filter element (105) is inserted into the filter tank (100), a circular end cover (106) is provided on the top of the filter element (105), an annular end cover (107) is provided on the bottom of the filter element (105), and an abutment ring (108) is installed inside the filter tank (100); Positioning mechanisms (200) capable of positioning the circular end cover (106) are provided on both sides of the upper surface of the filter tank (100).

2. A breathing machine filter device according to claim 1, characterized in that: The positioning mechanism (200) comprises a first fixed block (201) mounted on the upper surface of the filter tank (100), two sliding rods (202) are arranged inside the first fixed block (201), a pressure block (203) is installed at the ends of the two sliding rods (202), a plug hole (204) is provided on the side surface of the pressure block (203), a second fixed block (205) is mounted on the upper surface of the filter tank (100), an insertion rod (206) is inserted inside the second fixed block (205), and the insertion rod (206) is plugged into the plug hole (204), a shaft shoulder (207) is arranged on the outer surface of the insertion rod (206), and a first spring (208) is sleeved on the outer surface of the insertion rod (206), and two ends of the first spring (208) are respectively in contact with the shaft shoulder (207) and the second fixed block (205).

3. A breathing machine filter device according to claim 2, characterized in that: A top plate (300) is installed at the end of the slide bar (202) away from the pressure block (203), and a second spring (301) is sleeved on the outer surface of the slide bar (202), and two ends of the second spring (301) are respectively connected to the top plate (300) and the first fixed block (201).

4. A breathing machine filter device according to claim 3, characterized in that: The upper surface of the filter tank (100) is provided with a groove (400), and a first sealing gasket (401) is arranged inside the groove (400).

5. A breathing machine filter device according to claim 4, characterized in that: A second sealing gasket (500) is provided on the upper surface of the abutment ring (108).

6. A breathing machine filter device according to claim 1, characterized in that: A hand-held block (600) is mounted on the upper surface of the circular end cover (106), and a rubber pad is provided on the outer surface of the hand-held block (600).

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