A gas flow detection device for a medical ventilator

Abstract

The present invention provides a gas flow detection device for a medical ventilator, belonging to the technical field of medical equipment. It includes an air flow detection mechanism, and the air flow detection mechanism includes a body and a nose head. An outer shell is sleeved on the body, and a connecting pipeline is connected between the outer shell and the nose head. By setting a protection component, the present invention can double-limit the pipeline, improve the sealing effect of the connection between the pipeline and the nose head, prevent the pipeline from detaching by itself, avoid leakage due to poor sealing effect, protect the nose head from falling, limit the pipeline in the socket of the nose head, reduce the stress on the port of the tee pipe, and can also suspend the nose head. At the same time, it can block and collect water vapor and secretions, avoiding their influence on the sensor's perception and measurement of air flow, and further avoiding the blockage of the sensor pores by secretions and water vapor, resulting in the obstruction of air flow, thereby avoiding the low flow value detected by the detection device and further affecting the normal operation of the ventilator and the ventilation effect of the patient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a gas flow detection device for a medical ventilator. Background Art

[0002] The gas flow detection device for a medical ventilator is used to detect the flow rate of oxygen in the ventilator. However, during its use, the head of the gas flow detection device is usually installed between pipelines. During use, the oral and nasal secretions of patients and the hot air generated by breathing enter the pipeline, and further adhere to the vicinity of the flow sensor, affecting the sensor's perception and measurement of the air flow. For example, when the secretions block the pipeline or the pores of the sensor, the air flow will be blocked, resulting in a lower flow rate value detected by the detection device, affecting the normal operation of the ventilator and the ventilation effect of the patient. At the same time, when connecting the pipeline and the head, if there is a problem with the sealing effect, the leakage detection data will be inaccurate. Moreover, the pipeline and the head generally adopt a plug-in or screw connection method. During use, if the screw connection method is adopted, the pipeline and the head are likely to become detached due to fewer screw turns. When plugging in, if there is a pulling phenomenon, it is also easy to fall off. In addition, during use, if the head collides or falls to the ground, the head will be damaged and the internal components will vibrate. In addition, in most cases, the head is in a suspended state, which will cause the head and the three-way pipe port to be under stress. Being in this state for a long time will accelerate the damage of the three-way pipe port. Therefore, this application provides a gas flow detection device for a medical ventilator to meet the requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a gas flow detection device for a medical ventilator, so as to solve the problems in the existing gas flow detection device during use. During use, the nose of the gas flow detection device is usually installed between pipelines. During use, the oral and nasal secretions of patients and the hot air generated by breathing enter the pipeline. Further, they will adhere to the vicinity of the flow sensor, affecting the sensor's perception and measurement of the air flow. For example, when the secretions block the pipeline or the pores of the sensor, the air flow will be blocked, resulting in a lower flow value detected by the detection device, affecting the normal operation of the ventilator and the ventilation effect of the patient. At the same time, when connecting the pipeline and the nose, if there is a problem with the sealing effect, the leakage detection data will be inaccurate. Moreover, the pipeline and the nose generally adopt a plug-in or screw connection method. During use, if the screw connection method is adopted, the pipeline and the nose are likely to become detached due to fewer screw turns. When plugging in, if there is a pulling phenomenon, it is also likely to fall off. And, during use, if the nose collides or falls to the ground, the nose will be damaged and the internal components will vibrate. In addition, in most cases, the nose is in a suspended hanging state, which will cause the nose and the three-way pipe port to be in a stressed state. Being in this state for a long time will accelerate the damage of the three-way pipe port.

[0004] To solve the above technical problems, the present invention provides the following technical solutions:

[0005] A gas flow detection device for a medical ventilator, comprising an air flow detection mechanism, the air flow detection mechanism includes a body and a nose, an outer shell is sleeved on the body, and a connecting pipeline is connected between the outer shell and the nose; a protection component for protecting the nose and the pipeline from detachment, the protection component is connected to the nose; the protection component includes a pair of pipeline fixing components connected to each other, the pair of pipeline fixing components are respectively installed at both ends of the nose, the pair of pipeline fixing components are symmetrically arranged, and an outer protection component is arranged between the pair of pipeline fixing components, and an anti-blocking component is connected to the pipeline fixing component at the air outlet end of the nose.

[0006] Optionally, the pipeline fixing component includes a fixing ring fixedly connected to the outer end of the nose, an outer sleeve is fixedly connected to the outer end of the fixing ring, an installation groove is opened in the outer sleeve, and a plurality of supplementary sheet bodies distributed in a circumferential array are fixedly connected in the installation groove, and the supplementary sheet bodies are fixedly connected to the fixing ring.

[0007] Optionally, the pipeline fixing component further includes a plurality of receiving grooves opened on the inner wall of the nose and distributed in a circumferential array, and clamping plates fixedly connected to the fixing ring are installed in the receiving grooves.

[0008] Optionally, the clamping card board is composed of a first connecting section, a clamping section and a second connecting section which are fixedly connected in sequence, wherein the first connecting section is fixedly connected with the fixed ring, and the joints between the clamping section and the first connecting section and between the clamping section and the second connecting section are both arranged in an S shape, and the clamping card board is made of an elastic material.

[0009] Optionally, the supplementary sheet body is arranged in a wavy shape, the supplementary sheet body is made of an elastic material, and a plurality of the supplementary sheet bodies form a cavity, and the port diameter of the cavity at one end of the fixed ring gradually decreases towards the port at the other end.

[0010] Optionally, the outer protection component includes a pair of sleeves, the pair of sleeves are respectively fixedly sleeved at both ends of the machine head, and a pair of symmetrically arranged U-shaped anti-collision plates are fixedly connected between the pair of sleeves, and the pair of U-shaped anti-collision plates are respectively located on both sides of the machine head. A first anti-collision piece and a second anti-collision piece are fixedly connected to one of the U-shaped anti-collision plates, a hook is rotatably connected to the outer side wall of the other U-shaped anti-collision plate, a universal ball is installed on the sleeve at the air inlet end of the machine head, the ball sleeve of the universal ball is fixedly connected to the sleeve, and a hanging rod is fixedly connected to the ball head of the universal ball. A pair of kidney-shaped holes are formed in the U-shaped anti-collision plate, a first positioning plate and a second positioning plate are fixedly connected in one of the kidney-shaped holes, a pair of first jacks are formed in the first positioning plate, a second jack is formed in the second positioning plate, the first jacks and the second jacks correspond to the jacks on the side wall of the machine head, and rubber sleeves are installed in the first jacks and the second jacks.

[0011] Optionally, the U-shaped anti-collision plate is composed of a third connecting section, an anti-collision section and a fourth connecting section which are fixedly connected in sequence, wherein the third connecting section and the fourth connecting section are respectively fixedly connected with the pair of sleeves, and the joints between the anti-collision section and the third connecting section and between the anti-collision section and the fourth connecting section are both arranged in an S shape, and the U-shaped anti-collision plate is made of an elastic material.

[0012] Optionally, both the first anti-collision piece and the second anti-collision piece are arranged in a Y shape, a pair of process holes are formed in both the first anti-collision piece and the second anti-collision piece, a pair of C-shaped clamping plates are fixedly connected to one end of the first anti-collision piece, a C-shaped rubber sleeve is fixedly connected in the C-shaped clamping plates, the C-shaped rubber sleeve corresponds to the jack on the side wall of the machine head, both the first anti-collision piece and the second anti-collision piece are made of an elastic material, and the hanging rod is arranged in an L shape.

[0013] Optionally, the anti-blocking component includes a mounting bracket disposed inside the air outlet end of the machine head. The mounting bracket is fixedly connected to the second connecting section. A first baffle, a second baffle, and a third baffle are sequentially and fixedly sleeved on a side wall of the mounting bracket close to the fixed ring. A first protective plate fixedly sleeved on the mounting bracket is provided on a side of the first baffle away from the second baffle. A second protective plate fixedly sleeved on the mounting bracket is provided between the first baffle and the second baffle. A third protective plate fixedly sleeved on the mounting bracket is provided between the second baffle and the third baffle. A first ring plate is fixedly connected to the inner wall of the third baffle, and a second ring plate is fixedly connected to the open end of the third baffle.

[0014] Optionally, the mounting bracket is in a bowl shape. The bottom end of the mounting bracket is in a concave-convex shape. The first baffle, the second baffle, and the third baffle are all in a horn shape. The port diameters of the first baffle, the second baffle, and the third baffle from the end fixed to the mounting bracket to the other end port diameters increase in sequence. The first protective plate, the second protective plate, and the third protective plate are all in a curved shape. The port diameters of the first protective plate, the second protective plate, and the third protective plate at the end fixed to the mounting bracket are all larger than those of the other end. A plurality of air outlet holes opened on the mounting bracket are provided on the inner sides of the first protective plate, the second protective plate, and the third protective plate. The bottom of the mounting bracket is located inside the third baffle. The first ring plate and the second ring plate are in an annular shape. The inner side wall of the second ring plate is inclined, and the port diameter of the end fixed to the third baffle is larger than that of the other end. The second ring plate is disposed inside the third baffle. A first air outlet cavity is formed between the first protective plate and the first baffle. A second air outlet cavity is formed between the second protective plate and the second baffle. A third air outlet cavity is formed between the third protective plate and the third baffle. The inner diameter of the first baffle is larger than the inner diameter of the second baffle, and the inner diameter of the second baffle is larger than the inner diameter of the third baffle.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above solution, by providing the pipeline fixing component, the pipeline can be double-limited, and at the same time, the sealing effect of the connection between the pipeline and the machine head can be improved, avoiding the pipeline from detaching by itself, and also avoiding leakage due to poor sealing between the pipeline and the machine head.

[0017] By providing the outer protection component, anti-drop protection can be provided for the machine head, the pipeline in the machine head jack can be limited, the stress on the three-way pipe port can be reduced, and the machine head can also be suspended. This not only avoids damage to the machine head caused by collision or dropping, but also avoids the pipeline in the machine head jack from tilting or falling off due to collision.

[0018] By setting up the anti-blocking component, the water vapor and secretions formed by the hot air can be blocked and collected, preventing them from coming into contact with the flow sensor, avoiding the attachment of the water vapor and secretions formed by the hot air near the flow sensor, further avoiding its influence on the sensor's perception and measurement of the air flow, and even further avoiding the blockage of the sensor pores by the secretions and water vapor, which would otherwise impede the air flow, thereby avoiding the low flow value detected by the detection device and further affecting the normal operation of the ventilator and the ventilation effect of the patient.

[0019] In summary, by setting up the protection component, the present invention can double-limit the pipeline, improve the sealing effect of the connection between the pipeline and the machine head, prevent the pipeline from detaching by itself, avoid leakage due to poor sealing between the pipeline and the machine head, protect the machine head from being dropped, limit the pipeline in the socket of the machine head, reduce the stress on the port of the tee, and suspend the machine head. This not only avoids damage to the machine head caused by collision or dropping, but also prevents the pipeline in the socket of the machine head from tilting or detaching due to collision. At the same time, the water vapor and secretions formed by the hot air can be blocked and collected, preventing them from coming into contact with the flow sensor, avoiding the attachment of the water vapor and secretions formed by the hot air near the flow sensor, further avoiding its influence on the sensor's perception and measurement of the air flow, and even further avoiding the blockage of the sensor pores by the secretions and water vapor, which would otherwise impede the air flow, thereby avoiding the low flow value detected by the detection device and further affecting the normal operation of the ventilator and the ventilation effect of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0021] Figure 1 is a three-dimensional structural schematic diagram of a medical ventilator air flow detection device;

[0022] Figure 2 is a three-dimensional enlarged structural schematic diagram of the assembly of the machine head and the protection component;

[0023] Figure 3 is Figure 2 a three-dimensional structural schematic diagram of a partial cross-section;

[0024] Figure 4 is Figure 3 an enlarged structural schematic diagram of part A in

[0025] Figure 5 is a three-dimensional enlarged structural schematic diagram of the partial assembly of the anti-blocking component and the pipeline fixing component;

[0026] Figure 6 isFigure 5 Schematic diagram of the three-dimensional structure from the second perspective

[0027] Figure 7 is Figure 6 Schematic diagram of the sectional three-dimensional structure

[0028] Reference numerals:

[0029] 10. Airflow detection mechanism; 101. Machine body; 102. Outer shell; 103. Connecting pipeline; 104. Machine head; 20. Protection component; 210. Pipeline fixing part; 211. Receiving groove; 212. Clamping card board; 213. Supplementary sheet body; 214. Outer sleeve; 215. Fixed ring; 220. Outer protection part; 221. Sleeve; 222. U-shaped anti-collision plate; 223. First anti-collision sheet; 224. Second anti-collision sheet; 225. Hook; 226. Universal ball; 227. Hanging rod; 228. First positioning plate; 229. Second positioning plate; 230. Anti-blocking part; 231. Mounting frame; 232. First baffle; 233. Second baffle; 234. Third baffle; 235. First protection plate; 236. Second protection plate; 237. Third protection plate; 238. First ring plate; 239. Second ring plate

[0030] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs Detailed implementation manners

[0031] The following describes in detail a medical ventilator air flow detection device provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention

[0032] It should be noted that in the specification, references to "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicate that the described embodiments may include specific features, structures or characteristics, but not every embodiment necessarily includes the specific feature, structure or characteristic. Additionally, when combining embodiments to describe a specific feature, structure or characteristic, implementing such feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art

[0033] Generally, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that are not necessarily explicitly described.

[0034] It can be understood that the meanings of "on", "above", and "over" in the present invention should be interpreted in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but can also include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0035] In addition, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be correspondingly interpreted similarly.

[0036] As Figures 1 to 7 shown, an embodiment of the present invention provides a gas flow detection device for a medical ventilator, including an air flow detection mechanism 10, the air flow detection mechanism 10 includes a body 101 and a nose 104, an outer shell 102 is sleeved on the body 101, and a connecting pipeline 103 is connected between the outer shell 102 and the nose 104; a protection component 20 for protecting the nose 104 and preventing the pipeline from coming off, the protection component 20 is connected to the nose 104; the protection component 20 includes a pair of pipeline fixing components 210 connected to each other, the pair of pipeline fixing components 210 are respectively installed at both ends of the nose 104, the pair of pipeline fixing components 210 are symmetrically arranged, and an outer protection component 220 is provided between the pair of pipeline fixing components 210, and a blockage prevention component 230 is connected to the pipeline fixing component 210 at the air outlet end of the nose 104.

[0037] As Figures 3 to 7As shown, the pipeline fixing component 210 includes a fixing ring 215 fixedly connected to the outer end of the machine head 104. The outer end of the fixing ring 215 is fixedly connected with an outer sleeve 214. An installation groove is formed in the outer sleeve 214. A plurality of supplementary sheets 213 distributed in a circumferential array are fixedly connected in the installation groove. The supplementary sheets 213 are fixedly connected with the fixing ring 215. The supplementary sheets 213 are arranged in a wavy shape. The supplementary sheets 213 are made of an elastic material. In order to further improve the clamping force of the outer sleeve 214, a cavity is formed by the plurality of supplementary sheets 213. The outer sleeve 214 is made of a rubber material. The port diameter of the cavity at one end of the fixing ring 215 gradually decreases towards the other end port. By providing the supplementary sheets 213, the outer sleeve 214 and the fixing ring 215, during use, when the pipeline is inserted into the outer sleeve 214, the outer sleeve 214 will be expanded, and then the supplementary sheets 213 will be deformed. When the pipeline stops moving, the rebound of the supplementary sheets 213 will make the outer sleeve 214 close to the pipeline, thereby clamping the pipeline, strengthening the sealing effect between the pipeline and the outer sleeve 214, and then the pipeline can be limited for the first time to prevent the pipeline from detaching by itself.

[0038] The pipeline fixing component 210 further includes a plurality of receiving grooves 211 formed in the inner wall of the machine head 104 and distributed in a circumferential array. A clamping card plate 212 fixedly connected with the fixing ring 215 is installed in the receiving grooves 211. The clamping card plate 212 is composed of a first connecting section, a clamping section and a second connecting section fixedly connected in sequence. The first connecting section is fixedly connected with the fixing ring 215. The joints between the clamping section and the first connecting section and between the clamping section and the second connecting section are both arranged in an S shape. The clamping card plate 212 is made of an elastic material.

[0039] By providing the clamping card plate 212, during use, when the pipeline enters the ports at both ends of the machine head 104, it will contact the clamping card plate 212, and then the clamping card plate 212 will move into the receiving grooves 211. During this process, the joints between the clamping section and the first connecting section and between the clamping section and the second connecting section will be deformed. When the pipeline stops moving, the clamping card plate 212 will rebound simultaneously under the action of the rebound at the above two joints, making the clamping section close to the pipeline, further strengthening the limitation of the pipeline and further preventing the pipeline from detaching by itself.

[0040] As Figures 2 to 4As shown, the outer protection component 220 includes a pair of sleeves 221, which are respectively fixedly sleeved on both ends of the machine head 104. A pair of symmetrically arranged U-shaped anti-collision plates 222 are fixedly connected between the pair of sleeves 221. The pair of U-shaped anti-collision plates 222 are respectively located on both sides of the machine head 104. A first anti-collision piece 223 and a second anti-collision piece 224 are fixedly connected to one of the U-shaped anti-collision plates 222. The U-shaped anti-collision plate 222, the first anti-collision piece 223 and the second anti-collision piece 224 are provided to protect the machine head 104 from falling or being collided and damaged. A hook 225 is rotatably connected to the outer side wall of the other U-shaped anti-collision plate 222 to facilitate the suspension of the machine head 104. A universal ball 226 is installed on the sleeve 221 at the air inlet end of the machine head 104. The ball sleeve of the universal ball 226 is fixedly connected to the sleeve 221, and a hanging rod 227 is fixedly connected to the ball head of the universal ball 226. The hanging rod 227 is arranged in an L shape. The cooperation of the universal ball 226 and the hanging rod 227 is to facilitate the fixation with the tee pipe inserted into the air inlet end of the machine head 104. During use, it can be hooked at the fork of the tee pipe, which can reduce the stress on the port of the tee pipe. A pair of kidney-shaped holes are opened on the U-shaped anti-collision plate 222 to lighten the material and save its manufacturing cost. A first positioning plate 228 and a second positioning plate 229 are fixedly connected in one of the kidney-shaped holes. A pair of first jacks are opened on the first positioning plate 228, and a second jack is opened on the second positioning plate 229. The first jacks and the second jack are both corresponding to the jacks of the machine head 104. Rubber sleeves are installed in both the first jacks and the second jacks. The first positioning plate 228 and the second positioning plate 229, in cooperation with the first jacks, the second jack and the rubber sleeves, are to facilitate the clamping of the pipeline inserted into the jack of the machine head 104, prevent it from tilting due to collision, and prevent it from falling off during use.

[0041] The U-shaped anti-collision plate 222 is composed of a third connecting section, an anti-collision section, and a fourth connecting section that are fixedly connected in sequence. The third connecting section and the fourth connecting section are respectively fixedly connected to a pair of sleeves 221. The joints between the anti-collision section and the third connecting section and between the anti-collision section and the fourth connecting section are both arranged in an S shape. The S-shaped arrangement is for deforming and buffering the anti-collision section, improving the buffering effect of the anti-collision section, avoiding the co-vibration of the nose 104 caused by the U-shaped anti-collision plate 222 being too rigid under force, and further avoiding the oscillation of the internal components of the nose 104. The U-shaped anti-collision plate 222 is made of an elastic material. The first anti-collision piece 223 and the second anti-collision piece 224 are both arranged in a Y shape. A pair of process holes are opened on both the first anti-collision piece 223 and the second anti-collision piece 224. The first anti-collision piece 223 and the second anti-collision piece 224 are both made of an elastic material. In order to reduce the weight and production cost, a pair of C-shaped clamping plates are fixedly connected to one end of the first anti-collision piece 223. A C-shaped rubber sleeve is fixedly connected inside the C-shaped clamping plate. The C-shaped rubber sleeve corresponds to the jack on the side wall of the nose 104. The C-shaped clamping plate and the C-shaped rubber sleeve are provided to facilitate the clamping of the pipeline inserted into the jack of the nose 104, avoid its inclination due to collision, and prevent it from falling off during use.

[0042] As Figures 3 to 7 shown, the anti-blocking component 230 includes a mounting frame 231 arranged inside the air outlet end of the nose 104. The mounting frame 231 is fixedly connected to the second connecting section. A first baffle 232, a second baffle 233, and a third baffle 234 are sequentially and fixedly sleeved on one side wall of the mounting frame 231 close to the fixed ring 215. A first protective plate 235 fixedly sleeved on the mounting frame 231 is provided on the side of the first baffle 232 away from the second baffle 233. A second protective plate 236 fixedly sleeved on the mounting frame 231 is provided between the first baffle 232 and the second baffle 233. A third protective plate 237 fixedly sleeved on the mounting frame 231 is provided between the second baffle 233 and the third baffle 234. A first ring plate 238 is fixedly connected to the inner wall of the third baffle 234, and a second ring plate 239 is fixedly connected to the open end of the third baffle 234.

[0043] The mounting bracket 231 is arranged in a bowl shape, the bottom end of the mounting bracket 231 is arranged with an inner convex and outer concave shape, the first baffle 232, the second baffle 233 and the third baffle 234 are all arranged in a horn shape, and the port diameters of the first baffle 232, the second baffle 233 and the third baffle 234 from the fixed end to the other end with the mounting bracket 231 increase in sequence. The first protective plate 235, the second protective plate 236 and the third protective plate 237 are all arranged in a curved shape, and the port diameters of the first protective plate 235, the second protective plate 236 and the third protective plate 237 at the fixed end with the mounting bracket 231 are larger than those at the other end. A plurality of air outlet holes opened on the mounting bracket 231 are arranged on the inner sides of the first protective plate 235, the second protective plate 236 and the third protective plate 237. The bottom of the mounting bracket 231 is located inside the third baffle 234. The first ring plate 238 and the second ring plate 239 are arranged in a ring shape. The inner side wall of the second ring plate 239 is arranged in an inclined shape, and the port diameter of the end fixed with the third baffle 234 is larger than that of the other end. The second ring plate 239 is arranged inside the third baffle 234. A first air outlet cavity is formed between the first protective plate 235 and the first baffle 232. A second air outlet cavity is formed between the second protective plate 236 and the second baffle 233. A third air outlet cavity is formed between the third protective plate 237 and the third baffle 234. The inner diameter of the first baffle 232 is larger than the inner diameter of the second baffle 233. The inner diameter of the second baffle 233 is larger than the inner diameter of the third baffle 234. The mounting bracket 231, the first baffle 232, the second baffle 233, the third baffle 234, the first protective plate 235, the second protective plate 236, the third protective plate 237, the first ring plate 238, the second ring plate 239, the clamping card plate 212, the fixing ring 215 and the supplementary sheet body 213 are of an integral structure. Sterile cloths are arranged on the inner walls and outer walls of the first baffle 232, the second baffle 233 and the third baffle 234.

[0044] By setting up the anti-blocking component 230, during use, oxygen will pass through the mounting frame 231 and then overflow from the air outlet holes. The overflowing gas will overflow through the first air outlet chamber, the second air outlet chamber, and the third air outlet chamber, and then enter the air outlet end of the machine head 104 and be guided to the breathing mask through the pipeline. When the oral and nasal secretions of the patient and the hot air generated by breathing enter the pipeline, they will first contact the second ring plate 239 and be blocked for the first time. The blocked secretions and hot air will further enter the third baffle 234 along the second ring plate 239. The hot air will contact the bottom of the mounting frame 231, and then the hot air will be dispersed and enter the sterile cloth. When the hot air turns into water droplets, they will be stored in the first ring plate 238 and the second ring plate 239. At the same time, the secretions will also enter the third baffle 234, contact the sterile cloth, and slide into the first ring plate 238 and 289 for collection. Some of the overflowing hot air and secretions will enter the second baffle 233 and contact the sterile cloth, and the remaining overflowing hot air and secretions will enter the first baffle 232 and contact the sterile cloth. During this process, the third protective plate 237 and the second protective plate 236 will block the hot air and secretions, and the remaining part will be blocked by the mounting frame 231, so that the water vapor formed by the hot air and the secretions can be blocked and collected, preventing them from contacting the flow sensor, avoiding the attachment of the water vapor and secretions formed by the hot air near the flow sensor, further avoiding its influence on the sensor's perception and measurement of the air flow, and further avoiding the blockage of the sensor pores by the secretions and water vapor, resulting in the obstruction of the air flow, thus avoiding the low flow value detected by the detection device and further affecting the normal operation of the ventilator and the ventilation effect of the patient.

[0045] The working principle of the technical solution provided by the present invention is as follows: When installing the pipeline, when the pipeline is inserted into the outer sleeve 214, the outer sleeve 214 will be expanded, and then the supplementary sheet body 213 will be deformed. When the pipeline stops moving, the rebound of the supplementary sheet body 213 will make the outer sleeve 214 close to the pipeline. When the pipeline enters the two end ports of the machine head 104, it will contact the clamping card plate 212, and then the clamping card plate 212 will move towards the receiving groove 211. During this process, the joints between the clamping section and the first connecting section and between the clamping section and the second connecting section will be deformed. When the pipeline stops moving, the clamping card plate 212 will rebound simultaneously under the action of the rebound at the above two joints, making the clamping section close to the pipeline. When the pipeline is inserted into the socket of the machine head 104, the pipeline will be inserted into the rubber sleeve or the C-shaped rubber sleeve for clamping, and then the hanging rod 227 will be fixed to the three-way pipe inserted into the air inlet end of the machine head 104. When fixing, it will be hooked on the fork of the three-way pipe.

[0046] During use, oxygen will pass through the mounting bracket 231 and then overflow from the air outlet holes. The overflowing gas will overflow through the first air outlet cavity, the second air outlet cavity, and the third air outlet cavity, and then enter the air outlet end of the machine head 104 and be guided by the pipeline into the breathing mask. When the oral and nasal secretions of the patient and the hot air generated by breathing enter the pipeline, they will first contact the second ring plate 239 and be blocked for the first time. The blocked secretions and hot air will further enter the third baffle 234 along the second ring plate 239. The hot air will contact the bottom of the mounting bracket 231, and then the hot air will be dispersed and enter the sterile cloth. When the hot air turns into water droplets, they will be stored in the first ring plate 238 and the second ring plate 239. At the same time, the secretions will also enter the third baffle 234, contact the sterile cloth, and slide into the first ring plate 238 and 289 for storage. Part of the overflowing hot air and secretions will enter the second baffle 233 and contact the sterile cloth, and the remaining overflowing hot air and secretions will enter the first baffle 232 and contact the sterile cloth. During the process, the third protective plate 237 and the second protective plate 236 will block the hot air and secretions, and the remaining part will be blocked by the mounting bracket 231.

[0047] The present invention covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of the present invention. For the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. Additionally, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0048] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A gas flow detection device for a medical ventilator, characterized in that, It includes an air flow detection mechanism. The air flow detection mechanism includes a body and a nose. An outer shell is sleeved on the body, and a connecting pipeline is connected between the outer shell and the nose. A protection component for protecting the nose and the pipeline from disconnection. The protection component is connected to the nose. The protection component includes a pair of pipeline fixing parts connected to each other. The pair of pipeline fixing parts are respectively installed at both ends of the nose. The pair of pipeline fixing parts are symmetrically arranged. An outer protection part is arranged between the pair of pipeline fixing parts. A blockage prevention part is connected to the pipeline fixing part at the air outlet end of the nose. The blockage prevention part includes a mounting frame arranged inside the air outlet end of the nose. The mounting frame is fixedly connected to the second connecting section. A first baffle, a second baffle, and a third baffle are sequentially and fixedly sleeved on a side wall of the mounting frame close to the fixing ring. A first protection plate fixedly sleeved on the mounting frame is arranged on a side of the first baffle away from the second baffle. A second protection plate fixedly sleeved on the mounting frame is arranged between the first baffle and the second baffle. A third protection plate fixedly sleeved on the mounting frame is arranged between the second baffle and the third baffle. A first ring plate is fixedly connected to the inner wall of the third baffle. A second ring plate is fixedly connected to the open end of the third baffle. The mounting frame is arranged in a bowl shape, and the bottom end of the mounting frame is arranged in a shape with an inner convex and an outer concave. The first baffle, the second baffle, and the third baffle are all arranged in a horn shape. The diameter of the port of the first baffle, the second baffle, and the third baffle fixed to the mounting frame increases sequentially from one end port diameter to the other end port diameter. The first protection plate, the second protection plate, and the third protection plate are all arranged in a curved shape. A plurality of air outlet holes opened on the mounting frame are arranged on the inner sides of the first protection plate, the second protection plate, and the third protection plate. A first air outlet cavity is formed between the first protection plate and the first baffle. A second air outlet cavity is formed between the second protection plate and the second baffle. A third air outlet cavity is formed between the third protection plate and the third baffle.

2. The medical ventilator gas flow detection device according to claim 1, characterized in that, The pipeline fixing part includes a fixing ring fixedly connected to the outer end of the nose. An outer sleeve is fixedly connected to the outer end of the fixing ring. An installation groove is opened in the outer sleeve. A plurality of supplementary sheet bodies distributed in a circumferential array are fixedly connected in the installation groove. The supplementary sheet bodies are fixedly connected to the fixing ring.

3. The gas flow detection device for medical ventilators according to claim 2, characterized in that, The pipeline fixing part further includes a plurality of receiving grooves opened on the inner wall of the nose and distributed in a circumferential array. A clamping card plate fixedly connected to the fixing ring is installed in the receiving groove.

4. The medical ventilator air flow detection device according to claim 3, wherein, The clamping card plate is composed of a first connecting section, a clamping section, and a second connecting section fixedly connected in sequence. The first connecting section is fixedly connected to the fixing ring. The joints of the clamping section and the first connecting section and the joints of the clamping section and the second connecting section are both arranged in an S shape. The clamping card plate is made of an elastic material.

5. The medical ventilator air flow detection device according to claim 3, wherein The supplementary sheet body is arranged in a wavy shape, the supplementary sheet body is made of an elastic material, and a plurality of the supplementary sheet bodies form a cavity. The port diameter of the cavity at one end of the fixed ring gradually decreases towards the port at the other end.

6. The medical ventilator air flow detection device according to claim 1, characterized in that, The outer protection component includes a pair of sleeves, and the pair of sleeves are respectively fixedly sleeved at both ends of the machine head. A pair of symmetrically arranged U-shaped anti-collision plates are fixedly connected between the pair of sleeves. The pair of U-shaped anti-collision plates are respectively located on both sides of the machine head. A first anti-collision piece and a second anti-collision piece are fixedly connected to one of the U-shaped anti-collision plates. A hook is rotatably connected to the outer side wall of the other U-shaped anti-collision plate. A universal ball is installed on the sleeve at the air inlet end of the machine head. The ball sleeve of the universal ball is fixedly connected to the sleeve, and a hanging rod is fixedly connected to the ball head of the universal ball. A pair of kidney-shaped holes are formed in the U-shaped anti-collision plate. A first positioning plate and a second positioning plate are fixedly connected in one of the kidney-shaped holes. A pair of first jacks are formed in the first positioning plate, and a second jack is formed in the second positioning plate. The first jacks and the second jacks correspond to the jacks on the machine head respectively, and rubber sleeves are installed in the first jacks and the second jacks.

7. The medical ventilator gas flow detection device according to claim 6, wherein, The U-shaped anti-collision plate is composed of a third connecting section, an anti-collision section and a fourth connecting section which are fixedly connected in sequence. The third connecting section and the fourth connecting section are respectively fixedly connected to the pair of sleeves. The joints between the anti-collision section and the third connecting section and between the anti-collision section and the fourth connecting section are both arranged in an S shape. The U-shaped anti-collision plate is made of an elastic material.

8. The gas flow detection device for a medical ventilator according to claim 6, wherein, Both the first anti-collision piece and the second anti-collision piece are arranged in a Y shape. A pair of process holes are formed in both the first anti-collision piece and the second anti-collision piece. A pair of C-shaped clamping plates are fixedly connected to one end of the first anti-collision piece. A C-shaped rubber sleeve is fixedly connected in the C-shaped clamping plate. The C-shaped rubber sleeve corresponds to the jack on the side wall of the machine head. Both the first anti-collision piece and the second anti-collision piece are made of an elastic material. The hanging rod is arranged in an L shape.

9. The medical ventilator air flow detection device according to claim 8, wherein, The port diameters of the ends of the first protection plate, the second protection plate and the third protection plate fixed to the mounting frame are all larger than the port diameters of the other ends. The bottom of the mounting frame is located inside the third baffle. The first ring plate and the second ring plate are arranged in a ring shape. The inner side wall of the second ring plate is inclined, and the port diameter of the end fixed to the third baffle is larger than the port diameter of the other end. The second ring plate is arranged inside the third baffle. The inner diameter of the first baffle is larger than the inner diameter of the second baffle, and the inner diameter of the second baffle is larger than the inner diameter of the third baffle.

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