Disposable double-channel breathing filtering device applied to medical field

Abstract

The utility model provides a disposable double-channel breathing filtering device applied to the medical field. The disposable double-channel breathing filtering device is characterized in that the front end of a first channel is an air inlet end and is connected with an air outlet port of a breathing machine or an anaesthesia machine, and the rear end of the first channel is an air outlet end and is connected with an air inlet of a Y-shaped breathing loop; the second channel and the first channel are arranged side by side, the front end of the second channel is an air outlet end connected with an air inlet port of a breathing machine or an anaesthesia machine, and the rear end of the second channel is an air inlet end connected with an air outlet of the Y-shaped breathing loop; filtering substances are arranged in the first channel and the second channel. The first channel comprises a main channel and a bypass channel, and the channels are switched through the front single-channel card and the rear single-channel card. After being quickly installed with a breathing machine, an anaesthesia machine and a Y-shaped breathing circuit, the device can be directly used, so that the service life of the device is improved; and residual anesthetic gas of a breathing circuit can be effectively absorbed, anesthetic gas emission in an operating room is reduced, environmental pollution is reduced, meanwhile, residual anesthetic gas in the body of a patient is reduced, and postoperative anesthetic resuscitation of the patient is better facilitated.

Description

Technical Field

[0001] The utility model relates to the field of disposable medical consumables, and in particular to a disposable double-channel respiratory filter device applied in the medical field. Background Art

[0002] The anesthesia machines currently used in hospitals all absorb carbon dioxide and water vapor by installing sodium lime or calcium lime in the breathing circuit of the anesthesia machine. After the treatment, there are a lot of anesthetic gases remaining in the patient's body and the anesthesia circuit. If they are not discharged in time, it will affect the patient's anesthesia recovery and the indoor environment of the operating room. When using a ventilator, the waste gas exhaled by the patient is directly discharged through the breathing circuit. The specific operation is as follows: first, install the Y-type breathing circuit directly on the air inlet and outlet ports of the ventilator or anesthesia machine, and then connect the end of the Y-type breathing circuit to the disposable laryngeal mask or endotracheal tube on the patient's end to provide respiratory support for the patient. After a period of use, the internal circuit of the anesthesia machine or ventilator is often contaminated by the patient's exhaled gas, and the exhaled gas has a lot of water vapor, which is easy to accumulate water, which not only affects the use of the ventilator or anesthesia machine, but also easily breeds bacteria and causes cross infection. In addition, the breathing circuit of the anesthesia machine will have residual anesthetic gas, and direct discharge will also affect the working environment of the operating room. Usually, hospitals use anesthesia breathing circuit disinfection machines to atomize disinfectants, so that the atomized disinfectant is in full contact with the built-in circuit of the ventilator or anesthesia machine, thereby eliminating the germs and ensuring that there is no cross infection when it is used next time. However, in order to fully disinfect, each disinfection time must be at least fifteen minutes, and the disinfectant is prone to residue, which will affect the use of the next patient. In addition, the cost of anesthesia breathing circuit disinfection machines is relatively high, and not all ventilators and anesthesia machines can be used. It can be seen that the disinfection method using anesthesia breathing circuit disinfection machines takes a long time and is costly, which affects the utilization rate of ventilators or anesthesia machines.

[0003] Therefore, it is necessary to develop a device that can be quickly installed and used. During treatment, it can effectively purify the gas, absorb water vapor and carbon dioxide, and isolate pathogens. After anesthesia treatment, it can effectively absorb anesthetic gases remaining in the patient's respiratory system and the anesthesia breathing circuit, reduce the patient's anesthesia recovery time, reduce the emission of anesthetic gases in the operating room, and thus improve the working environment of the operating room. Utility Model Content

[0004] In view of the defects in the prior art, the purpose of the utility model is to provide a disposable dual-channel respiratory filter device for use in the medical field.

[0005] According to one aspect of the utility model, a disposable dual-channel respiratory filter device for use in the medical field is provided, comprising:

[0006] A first channel, wherein the front end of the first channel is an air inlet end for connecting to an air outlet port of a ventilator or an anesthesia machine, and the rear end of the first channel is a corresponding air outlet end for connecting to an air inlet of a Y-type breathing circuit;

[0007] A second channel, the second channel is parallel to the first channel, the front end of which is an air outlet end for connecting to the air inlet port of a ventilator or an anesthesia machine, and the rear end of which is a corresponding air inlet end for connecting to the air outlet of a Y-type breathing circuit;

[0008] The first channel and the second channel each have built-in filter materials.

[0009] Preferably, the filter material includes one or more of a respiratory filter membrane, activated carbon, calcium lime or soda lime, and the activated carbon, calcium lime or soda lime are all in irregular granular form, with gaps between the particles to ensure that the channel does not cause airway obstruction.

[0010] Preferably, the filter membrane is attached to each port of the first channel and the second channel, and the activated carbon, calcium lime or sodium lime are filled in sections along the axial direction of the first channel and the second channel.

[0011] Preferably, the first channel includes a main channel and a bypass channel, and the channels are switched simultaneously by the front single channel card and the rear single channel card. When the dual channels are applied to an anesthesia machine, the front air inlet of the first channel is separated into the front main air inlet and the bypass air inlet through a three-way interface, passes through the main channel and the bypass channel, and then to the main air outlet and the bypass air outlet, and then through the three-way interface, merges into the air outlet port of the first channel.

[0012] The front single-channel card and the rear single-channel card can be provided with a connecting rod at the end thereof, so that the front single-channel card and the rear single-channel card form a whole and move synchronously. In order to prevent the main channel and the bypass channel of the front single-channel card and the rear single-channel card from shifting and ensure smooth ventilation of the main channel and the bypass channel, positioning stickers can be respectively affixed to the front single-channel card and the rear single-channel card.

[0013] Preferably, the filter membrane is attached to each port of the first channel including the main channel, the bypass channel and the second channel, the main channel and the second channel of the first channel are filled with lime or soda lime strips, and the bypass channel of the first channel is filled with activated carbon.

[0014] Preferably, a simulated lung is installed at the very end of the bypass channel of the first channel at the air outlet of the bypass channel, so that when the patient is evacuated and the anesthesia vaporizer is turned off, the anesthesia machine can retain its respiratory function and continue to work.

[0015] Preferably, the first channel and the second channel are independent of each other and are split structures. Alternatively, the first channel and the second channel are fused to form an integrated structure.

[0016] Preferably, the calibers of the first channel and the second channel where the filter material is built-in are larger than the calibers of the two ends thereof.

[0017] Preferably, the inner tube diameters of the air inlet end of the first channel and the air outlet end of the second channel are respectively adapted to the outer tube diameters of the air outlet port and the air inlet port of the ventilator or anesthesia machine; the inner tube diameters of the air outlet end of the first channel and the air inlet end of the second channel are respectively adapted to the outer tube diameters of the air inlet and the air outlet of the Y-type breathing circuit.

[0018] Preferably, the first channel and the second channel are fixedly connected to the Y-shaped loop or are integrally designed to form a whole.

[0019] Preferably, an arrow mark is provided at the air inlet end of the first channel and the air outlet end of the second channel respectively to indicate the air flow direction.

[0020] Preferably, disposable sterile sealed packaging is used.

[0021] Compared with the prior art, the embodiment of the utility model has at least one of the following beneficial effects:

[0022] The utility model provides a disposable dual-channel respiratory filter device for use in the medical field. After being quickly installed with a ventilator or anesthesia machine and a Y-shaped breathing circuit, it can be used directly, thereby improving the service life of the equipment.

[0023] In the example of the utility model, when it is applied to an anesthesia machine, an activated carbon component is built into the bypass channel of the first channel, which can effectively absorb the residual anesthetic gas in the breathing circuit after the treatment is completed, thereby reducing the emission of anesthetic gas in the operating room and reducing environmental pollution. At the same time, it reduces the residual anesthetic gas in the patient's body, which is more conducive to the patient's postoperative anesthesia recovery.

[0024] A disposable dual-channel respiratory filter device for use in the medical field provided in the embodiment of the utility model can effectively filter harmful substances such as carbon dioxide, water vapor, and bacteria, avoid cross infection, and does not require disinfection of the internal circuit of the ventilator or anesthesia machine, thereby reducing the cost of the anesthesia breathing circuit disinfection machine and the manpower cost of medical staff.

[0025] A disposable dual-channel respiratory filter device for use in the medical field is provided in an embodiment of the utility model and adopts sterile packaging to improve safety for disposable use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0027] Figure 1 This is a schematic structural diagram of a disposable dual-channel respiratory filter device applied to a ventilator in one embodiment of the utility model;

[0028] Figure 2 This is a schematic structural diagram of a disposable dual-channel respiratory filter device in a preferred embodiment of the utility model;

[0029] Figure 3 It is a structural schematic diagram of a disposable dual-channel respiratory filter device that is applied to an anesthesia machine and uses a first channel bypass channel to work after treatment is completed in one embodiment of the utility model;

[0030] Figure 4 It is a structural schematic diagram of a disposable dual-channel breathing filter device in which the bypass channel is independent of the dual channels when applied to an anesthesia machine in a preferred embodiment of the utility model;

[0031] Figure 5 It is a schematic structural diagram of an integrated disposable dual-channel breathing filter device and a Y-type breathing circuit applied to an anesthesia machine in one embodiment of the utility model;

[0032] Figure 6 This is a schematic diagram of the structure of a disposable dual-channel breathing filter device and a Y-type breathing circuit integrated with the first channel bypass channel when the utility model is applied to an anesthesia machine after the treatment is completed;

[0033] Figure 7 This is a schematic structural diagram of a disposable dual-channel breathing filter device and a Y-type breathing circuit integrated with a bypass channel independent of the dual-channel when the utility model is applied to an anesthesia machine in a preferred embodiment;

[0034] Figure 8 This is a schematic structural diagram of an integrated disposable dual-channel breathing filter device and a Y-shaped breathing circuit applied to a ventilator in a preferred embodiment of the utility model;

[0035] Fig. 9 This is a structural schematic diagram of an anesthesia machine when a disposable dual-channel respiratory filter device is used for treatment in an application embodiment of the utility model;

[0036] Fig.10 This is a structural schematic diagram of an anesthesia machine after the disposable dual-channel respiratory filter device in an application embodiment of the utility model is applied to treatment;

[0037] Fig.11It is a structural schematic diagram of an anesthesia machine when a disposable dual-channel respiratory filter device in which a bypass channel is independent of a dual-channel is used for treatment in an application embodiment of the utility model;

[0038] Fig.12 It is a structural schematic diagram of an anesthesia machine device after a disposable dual-channel respiratory filter device in which a bypass channel is independent of a dual-channel in an application embodiment of the utility model is applied to treatment;

[0039] Fig.13 This is a schematic structural diagram of a disposable dual-channel respiratory filter device in an embodiment of the utility model when it is applied to a ventilator device;

[0040] Fig.14 This is a structural schematic diagram of an anesthesia machine in an application embodiment of the utility model;

[0041] Fig.15 This is a structural schematic diagram of an anesthesia machine device in which the valve of the evaporator is closed and the breathing function is retained in an application embodiment of the utility model.

[0042] Fig.16 This is a structural schematic diagram of a ventilator device in an application embodiment of the utility model;

[0043] Fig.17 This is a schematic structural diagram of a preferred embodiment of the present invention in which the first channel and the second channel are independent of each other and present a split structure;

[0044] Fig.18 This is a schematic diagram of the connection between the split first channel and the second channel and the Y-shaped breathing circuit in a preferred embodiment of the utility model.

[0045] In the figure, 1 is an anesthesia machine or a ventilator, 2 is a disposable dual-channel filtering device, 3 is a Y-type breathing circuit, 4 is a patient end equipped with a disposable laryngeal mask or an endotracheal tube, 101 is an air outlet port of the anesthesia machine or the ventilator, 102 is an air inlet port of the anesthesia machine or the ventilator, 103 is an exhalation valve, 104 is an inhalation valve, 105 is an anesthesia machine or a ventilator breathing circuit, 106 is an evaporator, 107 is an anesthetic gas switch, 201 is an air outlet at the rear end of the first channel, 202 is an air inlet at the rear end of the second channel, 203 is a filter membrane, 204 is an air outlet at the front end of the second channel, 205 is an air inlet at the front end of the first channel, 206 is activated carbon, 207 is lime or soda lime, 208 is a front single-channel card, 209 is a rear single-channel card, 210 is a connecting rod, 211 is a bypass air outlet, 212 is a bypass air inlet, 213 is a positioning sticker, and 214 is a simulated lung. DETAILED DESCRIPTION

[0046] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the utility model. These all fall within the scope of protection of the utility model.

[0047] In one embodiment of the present invention, a disposable dual-channel respiratory filter device for use in the medical field is provided, and its structure is as follows: Figure 1 As shown, it includes a first channel and a second channel,

[0048] The front end of the first channel is an air inlet end 205, which is used to connect to the air outlet port 101 of the ventilator, and the rear end thereof is a corresponding air outlet end 201, which is used to connect to the air inlet of the Y-shaped breathing circuit 3;

[0049] The second channel is parallel to the first channel, and its front end is an air outlet end 204 for connecting to the air inlet port 102 of the ventilator or anesthesia machine, and its rear end is a corresponding air inlet end 202 for connecting to the air outlet of the Y-shaped breathing circuit 3;

[0050] The first channel and the second channel are respectively provided with filter substances.

[0051] In this embodiment, the device can be used directly after being quickly installed with the ventilator, the anesthesia machine and the Y-shaped breathing circuit, thereby improving the service life of the equipment.

[0052] After the treatment, there is a lot of anesthetic gas remaining in the patient's body and the anesthesia circuit. If it is not discharged in time, it will affect the patient's anesthesia recovery and the indoor environment of the operating room. Therefore, in a preferred embodiment, the first channel is divided into a main airway and a bypass airway, and the two airways are switched by moving the front single channel card 208 and the rear channel card 209. Figures 2 to 4As shown, specifically, the front end of the first channel is the air inlet end 205, which is used to connect to the air outlet port 101 of the anesthesia machine. The air inlet end is divided into a main air inlet and a bypass air inlet 212 through a three-way interface, and then goes to the main air outlet and the bypass air outlet 211 when passing through the main airway and the bypass airway, and finally merges into the air outlet 201 at the rear end, which is used to connect to the air inlet of the Y-type breathing circuit 3. The front single-channel card 208 and the rear single-channel card 209 have the same structure and only include one pore. The diameter of the pore is the same as that of the main airway and the bypass airway. The front single-channel card 208 is inserted at the front end of the first channel, and the rear single-channel card 209 is inserted at the rear end of the first channel, moving up and down to change the position of its pore and switch the conduction relationship between the pore and the main airway and the bypass airway. Furthermore, a push connecting rod 210 is provided below the front single-channel card 208 and the rear single-channel card 209, so that the front single-channel card and the rear single-channel card form a whole and move synchronously. In addition, positioning stickers 213 are respectively attached to the front single-channel card and the rear single-channel card.

[0053] When the main channel of the first channel is working, the front single channel card 208 is connected to the main air inlet, and the rear single channel card 209 is connected to the main air outlet. When the bypass channel of the first channel needs to work, the connecting rod 210 is pushed, and the front single channel card 208 and the rear single channel card 209 are moved at the same time, so that the front single channel card 208 is connected to the bypass air inlet 212, and the rear single channel card 209 is connected to the bypass air outlet 211, and the working switching of the main channel and the bypass channel is completed. In order to prevent the card from shifting, a positioning sticker can be used for positioning to ensure that the card does not shift during the ventilation process.

[0054] In a preferred embodiment, if Figure 3 As shown, the bypass channel of the first channel has a simulated lung installed at the very end of the air outlet of the bypass channel so that when the patient is evacuated and the anesthesia vaporizer is turned off, the anesthesia machine can retain its respiratory function and continue to work.

[0055] When the device is applied to a ventilator, the first channel and the second channel are respectively built with filter materials including a respiratory filter membrane 203, activated carbon 206 and soda lime or calcium lime 207.

[0056] When the device is applied to an anesthesia machine, the main channel and the second channel separated from the first channel are respectively built with filter materials including a breathing filter membrane 203 and soda lime or calcium lime 207. The bypass channel separated from the first channel is built with filter materials including a breathing filter membrane 203 and activated carbon 206.

[0057] In order to ensure that the filter material can better meet the actual filtering needs, its composition type can be appropriately adjusted, including deleting or adding certain components. In some embodiments, when the patient inhales with a ventilator, the main purpose is to ensure the cleanliness of the gas, and the first channel can appropriately increase the composition of the breathing filter membrane 203 and the activated carbon 206; when the patient exhales with a ventilator, the exhaled carbon dioxide and water vapor are mainly exhaled, and the second channel can appropriately increase the amount of soda lime or calcium lime 207. When applied to an anesthesia machine, during the treatment of the patient, the anesthesia machine not only provides gas for breathing, but also provides anesthetic gas. Activated carbon has the function of adsorbing anesthetic gas. Therefore, the built-in filter material in the main channel of the first channel and the second channel includes a breathing filter membrane 203 and soda lime or calcium lime 207. After the treatment is completed, there will be anesthetic gas residues in the breathing circuit of the anesthesia machine and the patient's body. At this time, close the valve of the evaporator so that the anesthesia machine no longer provides anesthetic gas and retains the breathing function of the anesthesia machine. By pushing the connecting rod 210, the front single-channel is moved at the same time. The first channel card 208 and the rear single channel card 209 make the front single channel card 208 communicate with the bypass air inlet 212, and the rear single channel card 209 communicate with the bypass air outlet 211, completing the work switching of the main channel and the bypass channel of the first channel. When the anesthetic gas passes through the bypass channel, the activated carbon in the bypass channel absorbs the anesthetic gas passing through, reducing the anesthetic waste gas discharged in the operating room and the anesthetic gas concentration in the patient's body, while the soda lime or calcium lime in the second channel can absorb the carbon dioxide and water vapor, viruses and other harmful substances exhaled by the patient, so as to achieve the best effect. Of course, in other embodiments, other effective filtering components can also be added as long as they are verified to be harmless to the human body.

[0058] In another preferred embodiment, a better filtering effect is obtained by further optimizing the structure of the filter material. Specifically, the filter membrane 203 fits closely to each port of the first channel and the second channel, implements double filtering, and ensures that the gas is fully filtered when entering and leaving the filter material, thereby ensuring an efficient filtering effect. At the same time, when applied to a ventilator, activated carbon 206 and calcium lime or soda lime 207 are filled in sections along the axis of the two channels; when applied to an anesthesia machine, the main channel and the second channel of the first channel are built with calcium lime or soda lime 207, and the bypass channel of the first channel is built with activated carbon 206.

[0059] When applied to a ventilator, the gas from the front air inlet 205 of the first channel to the rear air outlet 201 needs to pass through the built-in breathing filter membrane 203, activated carbon 206, soda lime or calcium lime 207 and other filtering materials in the first channel, so as to purify the gas, absorb water vapor and carbon dioxide, and isolate pathogens. The gas from the rear air inlet 202 of the second channel to the front air outlet 204 needs to be built-in breathing filter membrane 203, activated carbon 206, soda lime or calcium lime 207 and other filtering materials in the second channel, so as to purify the gas, absorb water vapor and carbon dioxide, and isolate pathogens.

[0060] When applied to an anesthesia machine, during anesthesia, the mixed gas containing anesthetic gas enters the main channel from the air inlet end 205 of the first channel to the rear end outlet 201, and needs to pass through the built-in breathing filter membrane, soda lime or calcium lime in the main ventilation channel to purify the gas, absorb water vapor and carbon dioxide, and isolate bacteria. After the anesthesia is over, the main channel and the bypass channel of the first channel are switched, and the mixed gas containing anesthetic gas needs to pass through the built-in filter membrane 203 and activated carbon 206 in the bypass channel to adsorb the anesthetic gas passing through, thereby reducing the anesthetic waste gas discharged in the operating room and the anesthetic gas concentration in the patient's body.

[0061] The anesthetic mixed gas flows from the rear air inlet 202 of the second channel to the front air outlet 204. A breathing filter membrane, calcium lime or sodium lime or other filter materials must be built into the second channel to purify the gas, absorb water vapor and carbon dioxide, and isolate bacteria.

[0062] In some embodiments, the first channel and the second channel can be designed as an integrated type or a split type, which can be determined according to the position of the air outlet 101 and the air inlet 102 of the anesthesia machine or the ventilator. Since the positions of the air outlet 102 and the air inlet 102 of the anesthesia machine or the ventilator of the same brand are relatively fixed, a dual-channel filter device with corresponding specifications can be set according to the brand, so that it can be designed as an integrated type, such as Figures 1 to 8 However, there are also some small models on the market, which have different distances between the air outlet 101 and the air inlet 102 from those of the mainstream brands of ventilators or anesthesia machines. In order to meet the use of this type of ventilator or anesthesia machine, it can be designed as a split type, such as Figures 17-18 , so that it can be provided to a small number of anesthesia machines or ventilators of different models.

[0063] In order to further improve the filtering effect, in a preferred embodiment of the present invention, the first channel and the second channel, the parts of which the filter material is built in, should have a larger caliber. This design can ensure that more filter material is filled, thereby enhancing the filtering performance.

[0064] In addition to considering the filtering effect, the utility model also attaches great importance to the airtightness of the breathing circuit. In some preferred embodiments, the inner tube diameter of the air inlet end of the first channel is adapted to the outer tube diameter of the air outlet port of the respirator or anesthesia machine; the inner tube diameter of the air outlet end of the second channel is consistent with the outer tube diameter of the air inlet port of the respirator or anesthesia machine. At the same time, the inner tube diameter of the air outlet end of the first channel is adapted to the outer tube diameter of the air inlet port of the Y-type breathing circuit, while the inner tube diameter of the air inlet end of the second channel is adapted to the outer tube diameter of the air outlet port of the Y-type breathing circuit. This design significantly improves the airtightness of the entire breathing circuit after installation.

[0065] In order to ensure the airtightness of the breathing circuit is more reliable and reduce the risk of human operating errors, an optimized implementation scheme of the utility model is: the first channel and the second channel and the Y-shaped circuit 3 are fixedly connected or integrally designed to form an integral structure, such as Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.18 shown.

[0066] In addition, in order to further reduce the possibility of human error, some embodiments intentionally set arrow marks at the air inlet end of the first channel and the air outlet end of the second channel to clearly indicate the direction of the airflow. Such measures help ensure the normal operation of the system and improve the reliability of the device.

[0067] Furthermore, in some other embodiments, by using disposable sterile packaging, the safety of the device during use is improved, thereby effectively preventing the possibility of cross infection.

[0068] In order to more comprehensively illustrate the technical solution of the present utility model, the following specific application examples are provided to demonstrate its practical application process.

[0069] like Figures 2 to 6As shown, in this embodiment, taking the application of anesthesia machine as an example, the disposable dual-channel breathing filter device adopts sterile packaging. After unpacking, the main channel of the first channel is in a connected state, and there are positioning stickers on the front single-channel card and the rear single-channel card. The front air inlet end 205 and the air outlet end 204 of this device are respectively connected to the air outlet port 101 and the air inlet port 102 on the anesthesia machine. Because the outer diameters of the tube cavities of the air outlet port and the air inlet end of the anesthesia machine adopt standardized interfaces, the corresponding Y-type circuit also adopts the corresponding standardized interface. The air inlet on the device can be marked with a → arrow, and the air outlet can be marked with a ← arrow. It is only necessary to directly install the front air inlet end 205 and the air outlet end 204 of the device on the air outlet port 101 and the air inlet port 102 on the anesthesia machine according to the arrow mark, and then install the Y-type breathing circuit on the corresponding outlet end and inlet end of the device respectively, and then directly connect the disposable laryngeal mask or endotracheal tube on the patient end 4 through the end interface of the Y-type circuit 3 to form a complete breathing closed loop.

[0070] like Figures 9-10 , Figures 14-15 As shown, the anesthesia machine is turned on. When the equipment is operating normally, the switch of the anesthesia machine evaporator is turned on. At this time, in addition to providing respiratory support, the anesthesia machine also provides anesthetic gas for anesthesia to the patient. When the patient inhales, the anesthesia machine opens the inhalation valve 104, closes the exhalation valve 103, and pushes the mixed gas containing anesthetic gas to the outlet port 101. After passing through the front air inlet 205 of the device, the breathing filter membrane 203, calcium lime or sodium lime 207 and other filtering materials built into the main channel are used to filter out tiny particles, carbon dioxide, bacteria and other harmful substances in the gas, making the gas safer and cleaner. After the filtered gas enters a channel of the Y-shaped breathing circuit from the rear end air outlet 201 of the device, the anesthetic mixed gas enters the disposable laryngeal mask or endotracheal tube installed at the patient end, and the mixed gas containing anesthetic gas is inhaled into the patient's body to complete the inhalation. When the patient exhales, the air outlet port 101 of the anesthesia machine is closed, and the gas exhaled by the patient is sucked out, passes through the patient end equipped with a disposable laryngeal mask or endotracheal tube, and another channel of the Y-shaped breathing circuit, enters the rear end air inlet 202 of the device, and then passes through the built-in breathing filter membrane 203 of the device, the filter materials such as calcium lime or sodium lime 207, absorb the carbon dioxide and water vapor in the gas, and filter other harmful substances, so that the clean gas enters the anesthesia machine. At this time, the gas does not contain carbon dioxide, water vapor and other harmful substances, so that the gas is exhaled from the front end air outlet 204 of the device, and then passes through the air inlet port 102 of the anesthesia machine to enter the internal circuit of the anesthesia machine, so that the gas entering the internal circuit of the anesthesia machine is cleaner, and then the clean gas that has absorbed the carbon dioxide is pushed to the patient to inhale, and this cycle is repeated until the treatment is completed.

[0071] When the patient's treatment is finished, the anesthetic gas remaining in the patient's body and the entire breathing circuit of the anesthesia machine becomes anesthetic waste gas. If it is not treated, it will affect the patient's anesthesia recovery and the indoor environment of the operating room. Therefore, the evaporator 107 of the anesthesia machine is first turned off so that the anesthesia machine no longer provides anesthetic gas, while retaining the breathing support function of the anesthesia machine, and then the connecting rod 210 is pushed, and the front single-channel card 208 and the rear single-channel card 209 are moved at the same time, so that the front single-channel card 208 and the bypass air inlet 212 are connected, and the rear single-channel card 209 and the bypass air outlet 211 are connected, completing the working switch between the main channel and the bypass channel. At this time, the built-in breathing filter membrane 203 and activated carbon 206 of the bypass channel can absorb the anesthetic gas passing through and filter out the tiny particles and bacteria in the gas, so that after working for a period of time, the main channel and the bypass channel are switched. After a period of time, the concentration of anesthetic gas in the anesthesia breathing circuit and the patient's body will decrease. After the patient can breathe independently, the laryngeal mask or endotracheal tube in the patient's body can be removed. If the anesthetic gas concentration in the anesthesia circuit is still relatively high at this time, the laryngeal mask or endotracheal tube at the end of the Y-type circuit can be removed, and a simulated lung can be installed to allow the activated carbon in the bypass to continue to absorb the anesthetic gas until the concentration drops to a reasonable range. At this time, the anesthesia machine is turned off, and the disposable dual-channel breathing filter device and the Y-type breathing circuit disposable consumables are taken out, and the laryngeal mask or endotracheal tube taken out before are directly thrown into the medical waste bin to complete the operation.

[0072] Of course, in actual operation, some operating rooms have anesthesia recovery rooms. Directly sending surgical patients to the anesthesia recovery room for recovery can improve the use efficiency of the operating room. In this case, the bypass channel can be used independently of the dual-channel filtering device. It is only necessary to directly install a simulated lung on the bypass outlet 211, such as Figure 11-12 As shown, when treating a patient, the specific operation is consistent with the method described in the previous paragraph. When the treatment is over, the anesthesia vaporizer also needs to be turned off so that the anesthesia machine no longer provides anesthetic gas, while retaining the respiratory support function of the anesthesia machine. It is only necessary to remove the laryngeal mask or endotracheal tube installed at the end of the Y-shaped breathing circuit 3, and then directly install the end of the Y-shaped breathing circuit on the air inlet 212 of the bypass. Because the air outlet 211 of the bypass is pre-installed with a simulated lung, at this time, when the simulated lung inhales, the anesthetic residual gas in the anesthesia circuit will pass through the activated carbon 206 in the bypass channel, and then Through one channel of the Y-type breathing circuit, it enters the simulated lung, and then through inhalation, the gas in the simulated lung is sucked out, and then through another channel of the Y-type breathing circuit, it enters the activated carbon 206, filter membrane 203 and other substances in the bypass channel, and the gas finally returns to the simulated lung, and this process is repeated until the anesthetic gas concentration in the anesthesia circuit is reduced to a reasonable level. At this time, the anesthesia machine is turned off, and the disposable dual-channel breathing filter device, the disposable consumables of the Y-type breathing circuit are taken out, and the laryngeal mask or endotracheal tube taken out before are directly thrown into the medical waste bin to complete the operation.

[0073] like Fig.13 and Fig.16 As shown, in this embodiment, taking the application of a ventilator as an example, the disposable dual-channel respiratory filter device adopts sterile packaging. After unpacking, the front air inlet end 205 and the air outlet end 204 of the device are respectively connected to the air outlet port 101 and the air inlet port 102 on the ventilator. Because the outer diameters of the tube cavities of the air outlet port and the air inlet end of the ventilator adopt standardized interfaces, the corresponding Y-type circuit also adopts the corresponding standardized interface. The air inlet on the device can be marked with an arrow →, and the air outlet can be marked with an arrow ←. It is only necessary to directly install the front air inlet end 205 and the air outlet end 204 of the device on the air outlet port 101 and the air inlet port 102 on the ventilator according to the arrow markings, and then install the Y-type breathing circuit on the corresponding outlet end and inlet end of the device respectively, and then directly connect the disposable laryngeal mask or endotracheal tube on the patient end 4 through the end interface of the Y-type circuit 3 to form a complete breathing closed loop.

[0074] Turn on the ventilator. When the device is operating normally, when the patient inhales, the inhalation valve 104 of the ventilator is opened and the exhalation valve 103 is closed. At this time, the mixed gas of air and oxygen is pushed to the outlet port 101, and after passing through the front air inlet 205 of the device, the small particles, carbon dioxide, bacteria and other harmful substances in the gas are filtered out through the built-in breathing filter membrane 203, activated carbon 206, calcium lime or sodium lime 207 and other filtering materials, making the gas safer and cleaner. After the filtered gas enters a channel of the Y-shaped breathing circuit from the rear end air outlet 201 of the device, the disposable laryngeal mask or endotracheal tube installed at the patient end inhales the gas into the patient's body to complete the inhalation. When the patient exhales, the inhalation valve 104 of the ventilator is closed and the exhalation valve 103 is opened. At this time, air is inhaled into the air inlet port 101, and the gas exhaled by the patient is sucked out, passes through the patient end equipped with a disposable laryngeal mask or endotracheal tube, and another channel of the Y-shaped breathing circuit, enters the rear end air inlet 202 of the device, and then passes through the built-in breathing filter membrane 203, activated carbon 206, calcium lime or soda lime 207 and other filtering substances of the device, absorbs carbon dioxide and water vapor in the gas, and filters other harmful substances, so that clean gas enters the ventilator. The gas at this time does not contain carbon dioxide, water vapor and other harmful substances, so that the gas is exhaled from the front air outlet 204 of the device, and enters the internal circuit of the ventilator through the air inlet port 102 of the ventilator, making the gas entering the internal circuit of the ventilator cleaner, and then the mixed gas of air and oxygen is pushed to the patient to inhale, and this cycle is repeated until the treatment is over. After the patient can breathe independently, the disposable dual-channel breathing filter device, Y-type breathing circuit and disposable laryngeal mask or endotracheal tube and other disposable consumables are taken out and thrown directly into the medical waste bin to complete the operation.

[0075] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various modifications or variations within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A disposable dual-channel respiratory filter device used in the medical field, characterized in that: include: A first channel, wherein the front end of the first channel is an air inlet end for connecting to an air outlet port of a ventilator or an anesthesia machine, and the rear end of the first channel is a corresponding air outlet end for connecting to an air inlet of a Y-type breathing circuit; A second channel, the second channel is parallel to the first channel, the front end of which is an air outlet end for connecting to the air inlet port of a ventilator or an anesthesia machine, and the rear end of which is a corresponding air inlet end for connecting to the air outlet of a Y-type breathing circuit; The first channel and the second channel are respectively built with filter materials; The filter material includes a respiratory filter membrane, activated carbon, lime or soda lime, and the activated carbon, lime or soda lime are all in irregular granular form, with gaps between the particles to ensure that the channel will not cause airway obstruction.

2. A disposable dual-channel respiratory filter device for use in the medical field according to claim 1, characterized in that: The filter membrane is attached to each port of the first channel and the second channel, and the activated carbon, calcium lime or sodium lime are filled in sections along the axial direction of the first channel and the second channel.

3. A disposable dual-channel respiratory filter device for use in the medical field according to claim 1, characterized in that: The first channel includes a main channel and a bypass channel, and channel switching is performed simultaneously through a front single-channel card and a rear single-channel card.

4. A disposable dual-channel respiratory filter device for use in the medical field according to claim 2, characterized in that: The filter membrane is attached to each port of the first channel including the main channel, the bypass channel and the second channel. The main channel and the second channel of the first channel are filled with lime or soda lime strips, and the bypass channel of the first channel is filled with activated carbon.

5. A disposable dual-channel respiratory filter device for use in the medical field according to claim 3, characterized in that: A simulated lung is installed at the end of the outlet of the bypass channel.

6. A disposable dual-channel respiratory filter device for use in the medical field according to claim 1, characterized in that: The first channel and the second channel are independent of each other and are split structures; or, the first channel and the second channel are fused to form an integrated structure.

7. A disposable dual-channel respiratory filter device for use in the medical field according to claim 1, characterized in that: The diameters of the first channel and the second channel where the filter material is built-in are larger than the diameters of the two ends thereof.

8. A disposable dual-channel respiratory filter device for use in the medical field according to claim 1, characterized in that: The inner tube diameters of the air inlet end of the first channel and the air outlet end of the second channel are respectively adapted to the outer tube diameters of the air outlet port and the air inlet port of the ventilator or anesthesia machine; the inner tube diameters of the air outlet end of the first channel and the air inlet end of the second channel are respectively adapted to the outer tube diameters of the air inlet and the air outlet of the Y-type breathing circuit.

9. A disposable dual-channel respiratory filter device for use in the medical field according to claim 1, characterized in that: The first channel and the second channel are fixedly connected or integrally designed with the Y-shaped breathing circuit to form a whole.

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