Low-impedance pressure limiting structure capable of monitoring oxygen concentration

Abstract

The utility model discloses a low-impedance pressure limiting structure capable of monitoring oxygen concentration, which relates to the technical field of medical instruments and comprises a valve body, an air passage is arranged in the middle of the valve body, one end of the air passage is fixedly connected with an exhaust pipe, a first mounting hole communicated with the air passage is arranged at the top of the valve body, and a second mounting hole communicated with the air passage is arranged at the bottom of the valve body. A safety valve is fixedly mounted in a first mounting hole in the top of the valve body, a cover plate is fixedly connected to the upper surface of the safety valve and fixedly connected with the valve body, a through hole extending to the top of the safety valve is formed in the outer wall of the cover plate, and a first air hole is formed in the outer wall of one side of the valve body. According to the one-way breathing device, under the condition that the breathing machine breaks down or is powered off, the breathing machine can be switched into the second mounting hole with low impedance from the air channel in time, one-way breathing operation is achieved, through the design of the pressure release valve, it can be guaranteed that the air pressure provided for a patient is not larger than 12.5 kPa, and safe and reliable ventilation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a low-impedance voltage-limiting structure capable of monitoring oxygen concentration. Background Art

[0002] As an effective means of artificially replacing the spontaneous ventilation function, the ventilator has been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support therapy and emergency resuscitation. It occupies a very important position in the field of modern medicine. The ventilator is a vital medical device that can prevent and treat respiratory failure, reduce complications, save and prolong the patient's life. Especially in some internal medicine surgeries, the ventilator can buy doctors the maximum time to save lives.

[0003] Currently on the market, the inhalation port and free breathing port of the ventilator are mostly controlled by solenoid valves. The solenoid valves are relatively expensive, and the ventilator cannot provide stable air supply when the power is off. Secondly, independent solenoid valves take up a large space and are not suitable for small ventilators. For this reason, we designed a low-impedance pressure-limiting structure that can monitor oxygen concentration to replace the solenoid valve. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a low impedance voltage limiting structure capable of monitoring oxygen concentration.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A low-impedance pressure-limiting structure capable of monitoring oxygen concentration comprises a valve body, an airway is provided in the middle of the valve body, one end of the airway is fixedly connected to an exhaust pipe, a first mounting hole connected to the airway is provided at the top of the valve body, a safety valve is fixedly installed in the first mounting hole at the top of the valve body, a cover plate is fixedly connected to the upper surface of the safety valve, the cover plate is fixedly connected to the valve body, a through hole extending to the top of the safety valve is provided on the outer wall of the cover plate, a first air hole is provided on one side of the outer wall of the valve body, the first air hole is connected to the through hole at the cover plate, a second mounting hole connected to the first mounting hole is provided on the outer wall of the valve body, and a one-way valve is fixedly installed at the second mounting hole of the valve body.

[0007] Preferably, the safety valve includes a first diaphragm, a movable ring is sleeved on the lower surface of the first diaphragm, a second spring is placed on the lower surface of the movable ring, a fixed ring is provided at the other end of the second spring, the fixed ring is fixedly sleeved on the valve body through a first mounting hole, and the first diaphragm and the movable ring are slidably sleeved on the valve body through the first mounting hole.

[0008] Preferably, a sealing ring is sleeved on the upper surface of the fixed collar, and the sealing ring corresponds to the movable collar.

[0009] Preferably, there are two one-way valves. The one-way valve includes a fixed valve plate fixedly connected to the valve body. An exhaust hole is provided on the outer wall of the fixed valve plate. A movable rod is slidably sleeved in the middle of the fixed valve plate. One end of the movable rod is fixedly connected to a second diaphragm, and the second diaphragm is located inside the valve body.

[0010] Preferably, a sealing ring is sleeved on the outer wall of the fixed valve plate, and the outer wall of the sealing ring contacts the valve body.

[0011] Preferably, a second air hole is provided on the outer wall of the valve body, and the second air hole communicates with the air duct.

[0012] Preferably, a pressure relief valve is fixedly installed on one outer wall of the valve body, and the pressure relief valve communicates with the air duct.

[0013] Preferably, the pressure relief valve includes an adjusting valve plate. A threaded hole is provided in the valve body at the position of the pressure relief valve. The side wall of the adjusting valve plate is provided with an external thread, and the adjusting valve plate is threadedly connected to the valve body. An exhaust hole is provided on the outer wall of the adjusting valve plate. A first spring is provided on one side of the adjusting valve plate. The other end of the first spring is sleeved with a valve cover, and the other end of the valve cover is sleeved with a valve nozzle, and the valve nozzle is slidably sleeved with the valve body.

[0014] Preferably, an oxygen sensor is fixedly installed on one side of the valve body, and the input end of the oxygen sensor communicates with the air duct.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, through the design of the first air hole and the safety valve, when the ventilator fails or loses power, the airway can be timely switched to the second installation hole with low impedance, realizing one-way inhalation operation.

[0017] 2. In the present utility model, through the design of the pressure relief valve, when the pressure in the air duct is abnormal and greater than the pressure limit value, the gas in the air duct is discharged to the outside through the pressure relief valve, playing a role in protecting the patient's airway, and ensuring that the gas pressure provided to the patient is not greater than 12.5 kPa, realizing safe and reliable ventilation.

[0018] 3. In the present utility model, through the design of the oxygen sensor, oxygen concentration monitoring can be realized.

[0019] 4. In the present utility model, the integrated design of the pressure relief valve, the safety valve, the one-way valve, and the oxygen sensor with the valve body can effectively reduce the volume of the pressure limiting structure, facilitating its application to ventilators with small volumes. Description of the Drawings

[0020] Figure 1 This is a schematic structural view of a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model.

[0021] Figure 2 This is a schematic structural view of a valve body of a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model.

[0022] Figure 3 This is a front view of a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model.

[0023] Figure 4 This is a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model Figure 3 Cross-sectional view taken along A-A.

[0024] Figure 5 This is a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model Figure 3 Cross-sectional view taken along B-B.

[0025] Figure 6 This is a left view of a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model.

[0026] Figure 7 This is a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model Figure 6 Cross-sectional view taken along D-D.

[0027] Figure 8 This is a right view of a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model.

[0028] Figure 9 This is a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model Figure 8 Cross-sectional view taken along C-C.

[0029] Figure 10 This is a schematic structural view of a pressure relief valve of a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model.

[0030] Figure 11 This is a schematic structural view of a safety valve of a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model.

[0031] Figure 12 This is a schematic structural view of a check valve of a low-impedance pressure-limiting structure capable of monitoring oxygen concentration according to the present utility model.

[0032] Reference numerals in the figure: 1. Valve body; 101. First mounting hole; 102. Second mounting hole; 2. Exhaust pipe; 3. Air passage; 4. First air hole; 5. Second air hole; 6. Cover plate;

[0033] 7. Pressure relief valve; 701. Adjusting valve piece; 702. First spring; 703. Valve cover; 704. Valve nozzle;

[0034] 8. Safety valve; 801. First diaphragm; 802. Moving collar; 803. Second spring; 804. Fixed collar;

[0035] 9. Check valve; 901. Fixed valve piece; 902. Moving rod; 903. Second diaphragm; 10. Oxygen sensor. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0037] As shown in the attached Figure 1 to the attached Figure 9 figure:

[0038] A low-impedance pressure-limiting structure capable of monitoring oxygen concentration, comprising a valve body 1. An air passage 3 is provided in the middle of the valve body 1. One end of the air passage 3 is fixedly connected to an exhaust pipe 2. A first mounting hole 101 communicating with the air passage 3 is provided at the top of the valve body 1. A safety valve 8 is fixedly installed in the first mounting hole 101 at the top of the valve body 1. A cover plate 6 is fixedly connected to the upper surface of the safety valve 8. The cover plate 6 is fixedly connected to the valve body 1. A through hole extending to the top of the safety valve 8 is provided on the outer wall of the cover plate 6. A first air hole 4 is provided on one outer wall of the valve body 1. The first air hole 4 communicates with the through hole at the cover plate 6. A second mounting hole 102 communicating with the first mounting hole 101 is provided on the outer wall of the valve body 1. A check valve 9 is fixedly installed at the valve body 1 at the second mounting hole 102.

[0039] As shown in the attached Figure 4 to the attached Figure 11 figure, the safety valve 8 includes a first diaphragm 801. A moving collar 802 is sleeved on the lower surface of the first diaphragm 801. A second spring 803 is placed on the lower surface of the moving collar 802. The other end of the second spring 803 is provided with a fixed collar 804. The fixed collar 804 is fixedly sleeved with the valve body 1 through the first mounting hole 101. The first diaphragm 801 and the moving collar 802 are slidably sleeved with the valve body 1 through the first mounting hole 101. A sealing ring is sleeved on the upper surface of the fixed collar 804. The sealing ring corresponds to the moving collar 802.

[0040] In the above technical solution, the first air hole 4 is externally connected to an air pipe, and a constant air pressure is input through the air pipe. The gas enters the through hole in the cover plate 6 through the first air hole 4, reaches above the safety valve 8, and the gas pushes the first diaphragm 801 downward. The first diaphragm 801 drives the moving collar 802 to move downward, the second spring 803 is compressed, the moving collar 802 contacts the fixed collar 804, and the second mounting hole 102 is blocked by the safety valve 8.

[0041] As shown in the Figure 7 to Figure 12 accompanying drawings, there are two one-way valves 9. The one-way valve 9 includes a fixed valve plate 901 fixedly connected to the valve body 1. An exhaust hole is provided on the outer wall of the fixed valve plate 901. A movable rod 902 is slidably sleeved in the middle of the fixed valve plate 901. One end of the movable rod 902 is fixedly connected to a second diaphragm 903. The second diaphragm 903 is located inside the valve body 1. A sealing ring is sleeved on the outer wall of the fixed valve plate 901, and the outer wall of the sealing ring contacts the valve body 1.

[0042] In the above technical solution, when the patient inhales, a negative pressure is generated in the second mounting hole 102, the second diaphragm 903 moves into the second mounting hole 102, and the gas in the air pipe connected to the outside of the second mounting hole 102 enters the second mounting hole 102 through the air hole on the fixed valve plate 901.

[0043] As shown in the Figure 3 and Figure 5 accompanying drawings, a second air hole 5 is provided on the outer wall of the valve body 1, and the second air hole 5 is communicated with the air passage 3.

[0044] In the above technical solution, the second air hole 5 can be externally connected to a pressure sensor, and the gas pressure passing through the air passage 3 can be detected in real time through the pressure sensor.

[0045] As shown in the Figure 8 to Figure 10 accompanying drawings, a pressure relief valve 7 is fixedly installed on one outer wall of the valve body 1. The pressure relief valve 7 is communicated with the air passage 3. The pressure relief valve 7 includes a regulating valve plate 701. A threaded hole is provided in the valve body 1 at the position of the pressure relief valve 7. The side wall of the regulating valve plate 701 is provided with an external thread, and the regulating valve plate 701 is threadedly connected to the valve body 1. An exhaust hole is provided on the outer wall of the regulating valve plate 701. A first spring 702 is provided on one side of the regulating valve plate 701. The other end of the first spring 702 is sleeved with a valve cover 703. The other end of the valve cover 703 is sleeved with a valve nozzle 704, and the valve nozzle 704 is slidably sleeved on the valve body 1.

[0046] In the above technical solution, when the pressure in the air passage 3 is abnormal and greater than the pressure limit value, the air pressure in the air passage 3 is too high. The gas pushes the valve nozzle 704 and the valve cover 703 to move. The valve cover 703 squeezes the first spring 702, and the gas in the air passage 3 is discharged to the outside through the exhaust holes on the regulating valve plate 701, playing a role in protecting the patient's airway.

[0047] Moreover, rotating the regulating valve plate 701 can adjust the position of the regulating valve plate 701, thereby regulating the pressure of the pressure relief valve 7 and realizing the maximum pressure of mechanical exhaust.

[0048] It is worth mentioning that the integrated design of the pressure relief valve 7 and the valve body 1 can effectively reduce the volume of the pressure limiting structure.

[0049] As shown in the Figure 2 attachment, an oxygen sensor 10 is fixedly installed on one side of the valve body 1. The input end of the oxygen sensor 10 is communicated with the air passage 3, and the oxygen content of the gas in the air passage 3 is detected by the oxygen sensor 10.

[0050] Specific usage method and function of this embodiment:

[0051] When the present utility model is in use, the second mounting hole 102 and the air passage 3 are both externally connected to a gas supply pipeline. The air passage 3 is the main gas path, and the second mounting hole 102 is the auxiliary gas path. There are two gas supplies in total. Under normal circumstances, the main gas path supplies gas, and the auxiliary gas path is closed. When the equipment fails or the ventilator loses power, the auxiliary gas path supplies gas;

[0052] When the equipment is operating normally and the main gas path supplies gas, the first air hole 4 is externally connected to a trachea, and a constant air pressure is input through the trachea. The gas enters the through hole in the cover plate 6 through the first air hole 4, and the gas enters above the safety valve 8. The gas pushes the first diaphragm 801 to move downward. The first diaphragm 801 drives the moving collar 802 to move downward, and the second spring 803 is compressed. The moving collar 802 contacts the fixed collar 804, and the second mounting hole 102 is blocked through the safety valve 8. At this time, the second mounting hole 102 is closed, and only the air passage 3 supplies gas, and the gas is discharged through the exhaust pipe 2;

[0053] When the equipment malfunctions, at this time, the gas supplies of the main gas path and the first air hole 4 are both disconnected. At this time, under the action of the second spring 803, the moving collar 802 and the first diaphragm 801 reset. At this time, the second mounting hole 102 is opened. When the patient inhales, a negative pressure is generated in the second mounting hole 102, and the second diaphragm 903 moves into the second mounting hole 102. The gas in the trachea connected to the outside of the second mounting hole 102 enters the second mounting hole 102 through the air holes on the fixed valve plate 901, that is, the gas enters the second mounting hole 102 through the one-way valve 9, and then the gas enters the air passage 3 through the first mounting hole 101 and is discharged through the exhaust pipe 2, realizing the one-way inhalation operation.

[0054] For the above structure and process, please refer to Figure 1-12 .

[0055] When the ventilator fails or loses power, the second mounting hole 102 with low impedance can be timely switched from the airway 3 to achieve unidirectional inhalation operation. Through the design of the pressure relief valve 7, in the case of a single failure, the gas pressure provided to the patient can be ensured not to exceed 12.5 kPa, realizing safe and reliable ventilation.

[0056] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A low impedance pressure limiting structure capable of monitoring oxygen concentration, comprising a valve body (1), characterized in that: An air passage (3) is provided in the middle of the valve body (1), one end of the air passage (3) is fixedly connected to an exhaust pipe (2), a first mounting hole (101) connected to the air passage (3) is provided at the top of the valve body (1), a safety valve (8) is fixedly installed in the first mounting hole (101) at the top of the valve body (1), a cover plate (6) is fixedly connected to the upper surface of the safety valve (8), the cover plate (6) is fixedly connected to the valve body (1), an outer wall of the cover plate (6) is provided with a through hole extending to the top of the safety valve (8), a first air hole (4) is provided on one side of the outer wall of the valve body (1), the first air hole (4) is connected to the through hole at the cover plate (6), a second mounting hole (102) connected to the first mounting hole (101) is provided on the outer wall of the valve body (1), and a one-way valve (9) is fixedly installed at the second mounting hole (102) of the valve body (1).

2. A low impedance voltage limiting structure capable of monitoring oxygen concentration according to claim 1, characterized in that: The safety valve (8) comprises a first diaphragm (801), a movable sleeve (802) being sleeved on the lower surface of the first diaphragm (801), a second spring (803) being placed on the lower surface of the movable sleeve (802), a fixed sleeve (804) being provided at the other end of the second spring (803), the fixed sleeve (804) being fixedly sleeved on the valve body (1) through a first mounting hole (101), and the first diaphragm (801) and the movable sleeve (802) being slidably sleeved on the valve body (1) through the first mounting hole (101).

3. A low impedance voltage limiting structure capable of monitoring oxygen concentration according to claim 2, characterized in that: A sealing ring is sleeved on the upper surface of the fixed sleeve ring (804), and the sealing ring corresponds to the movable sleeve ring (802).

4. A low impedance voltage limiting structure capable of monitoring oxygen concentration according to claim 1, characterized in that: There are two one-way valves (9), each of which comprises a fixed valve plate (901), wherein the fixed valve plate (901) is fixedly connected to the valve body (1), an exhaust hole is provided on the outer wall of the fixed valve plate (901), a movable rod (902) is slidably sleeved in the middle of the fixed valve plate (901), one end of the movable rod (902) is fixedly connected to a second diaphragm (903), and the second diaphragm (903) is located inside the valve body (1).

5. A low impedance voltage limiting structure capable of monitoring oxygen concentration according to claim 4, characterized in that: A sealing ring is sleeved on the outer wall of the fixed valve plate (901), and the outer wall of the sealing ring is in contact with the valve body (1).

6. A low impedance voltage limiting structure capable of monitoring oxygen concentration according to claim 1, characterized in that: The outer wall of the valve body (1) is provided with a second air hole (5), and the second air hole (5) is connected to the air passage (3).

7. A low impedance voltage limiting structure capable of monitoring oxygen concentration according to claim 1, characterized in that: A pressure relief valve (7) is fixedly mounted on one side outer wall of the valve body (1), and the pressure relief valve (7) is in communication with the airway (3).

8. A low impedance voltage limiting structure capable of monitoring oxygen concentration according to claim 7, characterized in that: The pressure relief valve (7) comprises a regulating valve plate (701); a threaded hole is provided on the valve body (1) at the pressure relief valve (7); an external thread is provided on the side wall of the regulating valve plate (701); the regulating valve plate (701) is threadedly connected to the valve body (1); an exhaust hole is provided on the outer wall of the regulating valve plate (701); a first spring (702) is provided on one side of the regulating valve plate (701); a valve cover (703) is sleeved on the other end of the first spring (702); a valve mouth (704) is sleeved on the other end of the valve cover (703); and the valve mouth (704) is slidably sleeved on the valve body (1).

9. A low impedance voltage limiting structure capable of monitoring oxygen concentration according to claim 1, characterized in that: An oxygen sensor (10) is fixedly mounted on one side of the valve body (1), and an input end of the oxygen sensor (10) is connected to the airway (3).

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