Medical respirator

Abstract

The utility model relates to the technical field of medical instruments, and provides a medical respirator which comprises a mask. An elastic airbag; a first connector is arranged at the end, connected with an air outlet of the elastic air bag, of the communicating assembly, a second connector is arranged at the air outlet of the elastic air bag, and the end, away from the elastic air bag, of the second connector is inserted into the first connector. At least one clamping column is fixedly arranged on the outer circumferential face of the second connector, an L-shaped clamping groove matched with the clamping column is formed in the inner circumferential face of the first connector in a penetrating mode, and the clamping column is clamped in the L-shaped clamping groove. A sealing piece used for sealing the first connector and the second connector and applying thrust to the second connector to enable the second connector to be away from the first connector is arranged in the first connector. According to the respirator, the air bag and the communicating assembly can be connected more stably under the condition that the quick assembling effect of medical staff on the respirator is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a medical respirator. Background Art

[0002] A simple respirator, also known as a pressurized oxygen bag, is the simplest first aid device for maintaining artificial ventilation. It is portable and easy to use, and can be used for ventilation with or without an oxygen source. It is often used in important occasions such as on-site first aid and transfer of critically ill patients within hospitals. A simple respirator consists of a mask, a connecting structure (composed of connecting pipes, a one-way valve, an exhalation valve, a pressure safety valve and other devices), a sphere / airbag and other components; the connecting structure connects the airbag to the mask. When the operator squeezes the airbag, the gas in the airbag passes through the connecting structure into the mask and into the patient's respiratory tract, providing oxygen to patients with respiratory dysfunction, playing the role of artificial respiration, and can effectively improve the patient's respiratory function.

[0003] To facilitate assembly and airbag replacement, existing simple respirators typically use an interference fit between the airbag and the connecting structure. This allows for simple plug-and-pull connections and removal of the airbag, allowing medical personnel to quickly assemble the respirator and reduce emergency response preparation time. However, this connection, which relies solely on friction between the two pipes, can be unstable. External forces can cause the airbag and connecting structure to accidentally separate, adversely affecting medical personnel's work. Utility Model Content

[0004] The embodiments of the present application provide a medical respirator that can improve the technical problem in the related art that the connection between the airbag and the connecting structure is not firm, and when the respirator is subjected to external force, the airbag and the connecting structure may accidentally separate, which may have an adverse effect on the work of medical staff.

[0005] An embodiment of the present application provides a medical respirator, comprising: a mask; an elastic airbag; and a connecting component for connecting the mask and the elastic airbag, wherein the end of the connecting component connected to the air outlet of the elastic airbag is provided with a first connector, the air outlet of the elastic airbag is provided with a second connector, the end of the second connector away from the elastic airbag is inserted into the interior of the first connector, at least one clamping post is fixedly provided on the outer circumference of the second connector, an L-shaped slot cooperating with the clamping post is provided on the inner circumference of the first connector, the clamping post is clamped in the inside of the L-shaped slot, and a sealing member for sealing the first connector and the second connector and applying a thrust to the second connector to move it away from the first connector is provided inside the first connector.

[0006] The technical solution described above in the embodiments of this application has at least the following technical effects: The connection between the connecting assembly and the elastic airbag requires only two simple actions: pushing and rotating the second connector. This allows medical personnel to quickly and stably assemble the respirator, allowing them to quickly resume rescue work. This ensures that the connection between the airbag and the connecting assembly is more stable while ensuring rapid assembly of the respirator by medical personnel.

[0007] In some embodiments, a matching groove that matches the clamping post is formed on one side of the L-shaped clamping groove along the radial direction of the first connector toward the elastic airbag, and the clamping post is clamped inside the matching groove.

[0008] In some embodiments, a first sealing surface is formed on the inner wall of the first connector, a second sealing surface is formed at the end of the second connector close to the first sealing surface, and the sealing member includes a first elastic sealing ring, which is arranged between the first sealing surface and the second sealing surface and abuts against the first sealing surface and the second sealing surface respectively.

[0009] In some embodiments, a first conical surface is provided on the inner wall of the first connector, and a second conical surface is provided on the outer wall of the second connector to cooperate with the first conical surface. The seal also includes a second elastic sealing ring, which is arranged between the first conical surface and the second conical surface and abuts against the first conical surface and the second conical surface respectively.

[0010] In some embodiments, one end of the connecting component is connected to the air inlet of the mask through a breathing valve, and the air outlet pipe of the breathing valve is inserted into the air inlet pipe of the mask and has an interference fit with the inner wall of the air inlet pipe of the mask.

[0011] In some embodiments, the connecting component also includes a three-way valve and two connecting pipes, the air inlet of the three-way valve is connected to the air outlet of the first connector, one end of the two connecting pipes is respectively connected to the two air outlets of the three-way valve, and the other end is connected to the air inlet of the breathing valve, and a pressure safety valve is provided on each of the two connecting pipes, and the preset pressure thresholds of the two pressure safety valves are different.

[0012] In some embodiments, a one-way valve is provided at one end of the connecting pipe corresponding to the one with the smaller preset pressure threshold among the two pressure safety valves, close to the breathing valve, for preventing the gas inside the air inlet of the breathing valve from flowing into the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the overall structure of a medical respirator provided in an embodiment of the present application;

[0014] Figure 2 for Figure 1Enlarged view of part A;

[0015] Figure 3 A schematic diagram of the assembly of a breathing valve and a mask provided in an embodiment of the present application;

[0016] Figure 4 A cross-sectional view of a first connector and a second connector provided in an embodiment of the present application;

[0017] Figure 5 for Figure 4 Enlarged view of part B;

[0018] Figure 6 A schematic diagram of the assembly of the first connector and the second connector provided in an embodiment of the present application;

[0019] Figure 7 for Figure 6 Enlarged view of part C in the middle.

[0020] Among them, the reference numerals in the figures are:

[0021] 1. Mask; 2. Elastic airbag; 21. Second connector; 211. Clamping column; 212. Second sealing surface; 213. Second conical surface; 3. Connecting assembly; 31. First connector; 311. L-shaped slot; 312. Matching slot; 313. First sealing surface; 314. First conical surface; 32. Three-way valve; 33. Connecting pipe; 331. Pressure safety valve; 41. First elastic sealing ring; 42. Second elastic sealing ring; 5. Breathing valve. DETAILED DESCRIPTION

[0022] To facilitate assembly and airbag replacement, existing simple respirators typically use an interference fit between the airbag and the connecting structure. This allows for simple plug-and-pull connections and removal of the airbag, allowing medical personnel to quickly assemble the respirator and reduce emergency response preparation time. However, this connection, which relies solely on friction between the two pipes, can be unstable. External forces can cause the airbag and connecting structure to accidentally separate, adversely affecting medical personnel's work.

[0023] Based on this, in order to improve the technical problem in the related art that the connection between the airbag and the connecting structure is not firm, which may cause the airbag and the connecting structure to accidentally separate when the respirator is subjected to external force, thereby adversely affecting the work of medical staff, the embodiments of the present application provide the following solutions.

[0024] The following combination Figure 1-Figure 7 This application is described in further detail.

[0025] The present embodiment discloses a medical respirator, comprising: a mask 1; an elastic airbag 2; and a connecting component 3 for connecting the mask 1 and the elastic airbag 2; a first connector 31 is provided at one end of the connecting component 3 connected to the air outlet of the elastic airbag 2, and a second connector 21 is provided at the air outlet of the elastic airbag 2, and the end of the second connector 21 away from the elastic airbag 2 is inserted into the interior of the first connector 31, and at least one clamping column 211 is fixedly provided on the outer peripheral surface of the second connector 21, and an L-shaped clamping groove 311 that cooperates with the clamping column 211 is formed on the inner peripheral surface of the first connector 31, and the clamping column 211 is clamped in the inside of the L-shaped clamping groove 311, and a sealing member for sealing the first connector 31 and the second connector 21 and applying a thrust to the second connector 21 to move it away from the first connector 31 is provided inside the first connector 31.

[0026] From the above, it can be seen that the seal can be an elastic sealing ring, an abutting sealing structure composed of a bellows and a spring, etc., which can abut the end of the second connector 21 to form a seal and apply elastic resistance to the second connector 21 after the second connector 21 is inserted into the first connector 31.

[0027] With this arrangement, when connecting the elastic airbag 2 and the connecting assembly 3, the second connector 21 is inserted into the interior of the first connector 31, and each clamping post 211 is inserted into the opening of the corresponding L-shaped slot 311. The second connector 21 is then inserted further, and after the clamping post 211 is inserted into the corner of the L-shaped slot 311, the first connector 31 is held stationary and the second connector 21 is rotated so that the clamping post 211 continues to slide along the bent portion of the L-shaped slot 311. After the second connector 21 and the clamping post 211 are rotated a certain angle, the second connector 21 is released. At this point, the end of the second connector 21 located inside the first connector 31 abuts against the sealing member to form a seal. Simultaneously, the sealing member applies a thrust to the second connector 21 away from the first connector 31, causing the clamping post 211 to abut against the inner wall of the L-shaped slot 311, thereby securing the clamping post 211 and the second connector 21 to the first connector 31. The clamping post 211 can effectively prevent the second connector 21 from sliding relative to the first connector 31 .

[0028] This connection method between the connecting assembly 3 and the elastic airbag 2 requires only two simple actions: pushing and rotating the second connector 21. This allows medical personnel to quickly and stably assemble the respirator, allowing them to quickly resume rescue work. This ensures that the connection between the airbag 2 and the connecting assembly 3 is more stable while ensuring that medical personnel can quickly assemble the respirator.

[0029] The elastic airbag 2 and the connecting component 3 are detachably connected, which means that the elastic airbag 2 and the connecting component 3 can be stored separately when storing the respirator. The specifications of the elastic airbag 2 can be produced in several specifications according to actual needs. When it is necessary to prepare a respirator for rescue work, medical staff can prepare a certain number of universal connecting components 3, and then prepare several elastic airbags 2 of different specifications. When using the respirator, select the elastic airbag 2 to be used, and then connect the second connector 21 on the elastic airbag 2 to the first connector 31 on the connecting component 3 to use it. The connecting component 3 connects the elastic airbag 2 with the mask 1. When the elastic airbag 2 is pressed, the gas inside the elastic airbag 2 can be pressed into the inside of the mask 1 through the connecting component 3 to assist the patient's breathing.

[0030] Optionally, in some embodiments, see Figures 4 to 7 A matching groove 312 that matches the clamping column 211 is formed on the side of the L-shaped clamping groove 311 along the radial direction of the first connector 31 facing the elastic airbag 2, and the clamping column 211 is clamped inside the matching groove 312.

[0031] With this arrangement, the shape of the mating groove 312 matches the shape of the clamping post 211. After rotating the clamping post 211 to align with the mating groove 312, the second connector 21 is released, and the sealing member pushes the second connector 21 and the clamping post 211 to move, causing the clamping post 211 to snap into the mating groove 312. The mating groove 312 prevents the second connector 21 from rotating relative to the first connector 31 when subjected to external force, thereby preventing the second connector 21 from becoming loose from the first connector 31.

[0032] Optionally, see Figure 4 A first sealing surface 313 is formed on the inner wall of the first connector 31, and a second sealing surface 212 is formed at the end of the second connector 21 close to the first sealing surface 313. The sealing member includes a first elastic sealing ring 41, which is arranged between the first sealing surface 313 and the second sealing surface 212 and abuts against the first sealing surface 313 and the second sealing surface 212 respectively.

[0033] The first elastic sealing ring 41 can be disposed between the first sealing surface 313 and the second sealing surface 212 in a variety of ways, and can be fixedly disposed on either of the two surfaces. For example, an annular groove having a shape matching that of the first elastic sealing ring 41 can be formed on the first sealing surface 313, and the first elastic sealing ring 41 can be interference-fitted into the annular groove.

[0034] With this arrangement, when the second connector 21 is inserted into the first connector 31, the second sealing surface 212 abuts against one side of the first elastic sealing ring 41, while its other side presses against the first sealing surface 313. This creates a seal between the first sealing surface 313 and the second sealing surface 212, preventing air leakage. Simultaneously, when pressed, the first elastic sealing ring 41 applies an elastic force to the second sealing surface 212, securing the clamping post 211 within the L-shaped slot 311.

[0035] In some embodiments, see Figure 4 and Figure 5 A first conical surface 314 is provided on the inner wall of the first connecting head 31, and a second conical surface 213 is provided on the outer wall of the second connecting head 21 to cooperate with the first conical surface 314. The seal also includes a second elastic sealing ring 42, which is arranged between the first conical surface 314 and the second conical surface 213 and respectively abuts against the first conical surface 314 and the second conical surface 213.

[0036] The second elastic sealing ring 42 can be assembled in the same manner as the first elastic sealing ring 41. When the second connector 21 is inserted into the first connector 31 and locked, the second elastic sealing ring 42 will apply a thrust to the second conical surface 213, thereby increasing the resistance to the second connector 21 and making the connection between the clamping column 211 and the L-shaped clamping groove 311 more stable. At the same time, a second sealing layer is formed between the first conical surface 314 and the second conical surface 213, thereby enhancing the sealing effect between the first connector 31 and the second connector 21. Through the cooperation between the first conical surface 314 and the second conical surface 213, the first conical surface 314 can also apply a component of force along the radial direction of the second connector 21 to the second connector 21 through the second elastic sealing ring 42, thereby centering the position of the second connector 21 and reducing the shaking amplitude between the second connector 21 and the first connector 31, thereby improving the cooperation effect between the two.

[0037] In some embodiments, see Figure 3 One end of the connecting component is connected to the air inlet of the mask through the breathing valve 5, and the outlet pipe of the breathing valve 5 is inserted into the inside of the air inlet pipe of the mask 1 and has an interference fit with the inner wall of the air inlet pipe of the mask 1.

[0038] In this way, the mask 1 is detachably connected to the connecting component 3, and when assembling the respirator, masks 1 of different specifications suitable for patients can be selected, making the respirator more widely applicable.

[0039] Optionally, in some embodiments, see Figure 1 and Figure 2The connecting component 3 also includes a three-way valve 32 and two connecting pipes 33. The air inlet of the three-way valve 32 is connected to the air outlet of the first connector 31. One end of the two connecting pipes 33 is respectively connected to the two air outlets of the three-way valve 32, and the other end is connected to the air inlet of the breathing valve 5. A pressure safety valve 331 is provided on each of the two connecting pipes 33, and the preset pressure thresholds of the two pressure safety valves 331 are different.

[0040] Because patients of different ages have different lung pressure tolerances when using a ventilator, pressure safety valves 331 with different pressure thresholds are required to ensure that the air pressure applied to the patient's lungs by the ventilator does not exceed a safe range. The number of connecting tubes 33 can be increased based on actual conditions, and the three-way valve 32 can be replaced with a valve with more channels. It is sufficient to ensure that the outlet of the first connector 31 can be connected to any connecting tube 33 while disconnecting the others.

[0041] After assembling the respirator, medical personnel need to select a communication channel compatible with the elastic airbag 2. For example, if the pressure safety valves 331 installed on the two connecting tubes 33 have pressure thresholds set for children and adults, respectively, and the pressure safety valve 331 for adults has a higher preset pressure threshold than that for children, medical personnel can adjust the three-way valve 32 so that the first connector 31 is connected to only one of the corresponding connecting tubes 33. This ensures that the pressure safety valves 331 provide the desired protective effect on the patient.

[0042] Optionally, see Figures 1 to 5 A one-way valve is provided at one end of the connecting pipe 33 close to the breathing valve 5, which corresponds to the one with the smaller preset pressure threshold among the two pressure safety valves 331, to prevent the gas inside the air inlet of the breathing valve 5 from flowing into the connecting pipe 33.

[0043] With this arrangement, when the elastic airbag 2 is connected to the connecting tube 33 with a higher preset pressure threshold, if both connecting tubes 33 are connected to the air inlet of the breathing valve 5, the gas within this combined connecting cavity can enter the lower pressure threshold connecting tube 33. When the gas pressure within the connecting cavity exceeds this lower pressure threshold, the gas overflows from the pressure relief valve 331, causing the connecting cavity to fail to maintain the desired high pressure. In this case, the one-way valve prevents gas from escaping from the lower pressure threshold connecting tube 33, thereby preventing interference between the two pressure relief valves 331.

[0044] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A medical respirator comprising a mask (1); an elastic airbag (2); and a connecting assembly (3) for connecting the mask (1) and the elastic airbag (2), characterized in that: The end of the connecting component (3) connected to the air outlet of the elastic airbag (2) is provided with a first connector (31), the air outlet of the elastic airbag (2) is provided with a second connector (21), the end of the second connector (21) away from the elastic airbag (2) is inserted into the interior of the first connector (31), at least one clamping column (211) is fixedly provided on the outer peripheral surface of the second connector (21), an L-shaped clamping groove (311) matching the clamping column (211) is provided through the inner peripheral surface of the first connector (31), the clamping column (211) is clamped in the interior of the L-shaped clamping groove (311), and a sealing member for sealing the first connector (31) and the second connector (21) and applying a thrust to the second connector (21) to make it move away from the first connector (31) is provided inside the first connector (31).

2. A medical respirator according to claim 1, characterized in that: A matching groove (312) matching with the clamping column (211) is formed on one side of the L-shaped clamping groove (311) along the radial direction of the first connector (31) and facing the elastic airbag (2), and the clamping column (211) is clamped inside the matching groove (312).

3. A medical respirator according to claim 1, characterized in that: A first sealing surface (313) is formed on the inner wall of the first connector (31), and a second sealing surface (212) is formed at the end of the second connector (21) close to the first sealing surface (313). The sealing member includes a first elastic sealing ring (41), and the first elastic sealing ring (41) is arranged between the first sealing surface (313) and the second sealing surface (212) and abuts against the first sealing surface (313) and the second sealing surface (212) respectively.

4. A medical respirator according to claim 3, characterized in that: A first conical surface (314) is provided on the inner wall of the first connector (31), and a second conical surface (213) is provided on the outer wall of the second connector (21) to cooperate with the first conical surface (314). The sealing member further comprises a second elastic sealing ring (42), and the second elastic sealing ring (42) is arranged between the first conical surface (314) and the second conical surface (213) and abuts against the first conical surface (314) and the second conical surface (213), respectively.

5. The medical respirator according to claim 1, characterized in that: One end of the communication component (3) is connected to the air inlet of the mask (1) through the breathing valve (5), and the air outlet pipe of the breathing valve (5) is inserted into the air inlet pipe of the mask (1) and is interference-fitted with the inner wall of the air inlet pipe of the mask (1).

6. A medical respirator according to claim 5, characterized in that: The connecting assembly (3) further comprises a three-way valve (32) and two connecting pipes (33), wherein the air inlet of the three-way valve (32) is connected to the air outlet of the first connector (31), one end of the two connecting pipes (33) is respectively connected to the two air outlets of the three-way valve (32), and the other end is connected to the air inlet of the breathing valve (5), and each of the two connecting pipes (33) is provided with a pressure safety valve (331), and the preset pressure thresholds of the two pressure safety valves (331) are different.

7. A medical respirator according to claim 6, characterized in that: A one-way valve is provided at one end of the connecting pipe (33) corresponding to the one with the smaller preset pressure threshold value among the two pressure safety valves (331) and close to the breathing valve (5), for preventing the gas inside the air inlet of the breathing valve (5) from flowing into the inside of the connecting pipe (33).

Images