Alarm module and analgesia device

Abstract

The utility model belongs to the technical field of analgesia devices, and particularly relates to an alarm module and an analgesia device.The alarm module and the analgesia device.The alarm module comprises a laughing gas circuit, an oxygen gas circuit, a pressure difference assembly and an alarm unit, and the laughing gas circuit comprises a laughing gas inlet used for being connected with a laughing gas source and a laughing gas outlet used for being connected with an inspiration gas circuit of the analgesia device; the oxygen gas path comprises an oxygen inlet used for being connected with an oxygen gas source and an oxygen outlet used for being connected with the inspiration gas path, the differential pressure assembly is communicated between the laughing gas inlet and the laughing gas outlet, and the differential pressure assembly is further communicated between the oxygen inlet and the oxygen outlet; a pressure relief opening of the pressure difference assembly is used for discharging oxygen in the oxygen gas path when the pressure difference between the oxygen and the laughing gas is larger than a set value, and the alarm unit is used for giving an alarm when the pressure difference between the oxygen and the laughing gas is larger than the set value. The oxygen pressure reduction value in the oxygen gas path can be set in a range, and the situation that the concentration of laughing gas conveyed to a patient by the inspiration gas path of the analgesia device is too low due to too high oxygen pressure, and the good analgesia effect cannot be achieved is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of analgesic devices, and in particular relates to an alarm module and analgesic device. Background Art

[0002] An analgesic device is a medical device that delivers nitrous oxide to patients to provide them with anesthesia and analgesia.

[0003] An existing analgesic device includes a laughing gas circuit, an oxygen circuit and an inhalation circuit, the laughing gas circuit includes a connected laughing gas inlet and a laughing gas pipeline, the laughing gas inlet is used to be connected to a laughing gas source, the oxygen circuit includes an oxygen inlet and an oxygen pipeline, the oxygen inlet is used to be connected to the oxygen source, the inhalation circuit includes a connected mixing chamber and an inhalation pipeline, the laughing gas pipeline and the oxygen pipeline are both connected to the mixing chamber, and are used to transport laughing gas and oxygen to the mixing chamber for mixing, and the inhalation pipeline is used to be connected to a patient, and is used to transport the mixed gas to the patient.

[0004] Although the existing analgesic device can deliver nitrous oxide to patients, it can only deliver analgesic effect to patients when the concentration of nitrous oxide is greater than 50%. However, when the concentration of nitrous oxide is greater than 80%, it has an anesthetic effect and may even cause harm to the human body. Therefore, it is necessary to design a monitoring and alarm module to strictly monitor the concentration of nitrous oxide in the mixed gas delivered to the patient, so that the concentration of nitrous oxide is not higher than 70% and the concentration of oxygen is not lower than 30%, so as to achieve a good analgesic effect. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an alarm module and an analgesic device to monitor the concentration of laughing gas in the mixed gas delivered to the patient.

[0006] To solve the above technical problems, on the one hand, the embodiment of the utility model provides an alarm module, including a laughing gas gas circuit, an oxygen gas circuit, a pressure difference component and an alarm unit, wherein the laughing gas gas circuit includes a laughing gas inlet for being connected to a laughing gas gas source and a laughing gas outlet for being connected to an inhalation gas circuit of an analgesic device, and the oxygen gas circuit includes an oxygen inlet for being connected to an oxygen gas source and an oxygen outlet for being connected to the inhalation gas circuit;

[0007] The pressure difference component is connected between the nitrous oxide inlet and the nitrous oxide outlet, and is also connected between the oxygen inlet and the oxygen outlet. The pressure difference component includes a pressure relief port, and the pressure relief port is used to discharge the oxygen in the oxygen gas path when the pressure difference between oxygen and nitrous oxide is greater than a set value. The alarm unit is used to sound an alarm when the pressure difference between oxygen and nitrous oxide is greater than a set value.

[0008] Optionally, the pressure difference component includes a nitrous oxide chamber, an oxygen chamber and a pressure relief chamber, the nitrous oxide chamber is connected between the nitrous oxide inlet and the nitrous oxide outlet, the oxygen chamber is connected between the oxygen inlet and the oxygen outlet, the pressure relief chamber is arranged between the nitrous oxide chamber and the oxygen chamber, the pressure relief chamber is used to communicate with the oxygen chamber when the pressure difference between oxygen and nitrous oxide is greater than a set value, and the pressure relief port is arranged in the pressure relief chamber.

[0009] Optionally, the nitrous oxide gas circuit further includes a nitrous oxide shut-off valve, which is connected between the pressure difference assembly and the nitrous oxide outlet, and is connected to the oxygen gas circuit. The nitrous oxide shut-off valve is a normally open valve, and is used to close when the oxygen pressure is lower than a set value.

[0010] Optionally, the alarm unit includes an alarm whistle, which is connected to the pressure relief port, and the oxygen discharged from the pressure relief port can blow the alarm whistle.

[0011] Optionally, the alarm unit further includes an oxygen alarm component, which is connected between the oxygen gas circuit and the pressure relief chamber, and is used to communicate with the pressure relief chamber when the oxygen pressure exceeds a set range.

[0012] Optionally, the oxygen alarm assembly includes a high-pressure alarm assembly, which includes a high-pressure branch and a high-pressure valve, wherein the high-pressure branch is connected between the oxygen gas circuit and the pressure relief air chamber, and the high-pressure valve is connected to the high-pressure branch, and the high-pressure valve is a normally closed valve, which is used to open when the oxygen pressure is greater than the high-pressure setting value to connect the high-pressure branch with the pressure relief air chamber.

[0013] Optionally, the oxygen alarm assembly also includes a low-pressure alarm assembly, which includes a low-pressure branch and a low-pressure valve, wherein the low-pressure branch is connected between the oxygen gas circuit and the pressure relief chamber, and the low-pressure valve is connected to the low-pressure branch. The low-pressure valve is used to be normally open when the oxygen pressure is lower than a low-pressure setting value to connect the low-pressure branch with the pressure relief chamber, and the low-pressure valve is used to be closed when the oxygen pressure is higher than the low-pressure setting value.

[0014] According to the alarm module of the embodiment of the utility model, it is connected to the inhalation air circuit of the analgesic device, and the pressure relief port can discharge the oxygen in the oxygen circuit when the pressure difference between oxygen and nitrous oxide is greater than a set value, so as to reduce the oxygen pressure in the oxygen circuit to a set range, and the alarm unit can sound an alarm to remind medical staff to avoid excessive oxygen pressure, which may cause the inhalation air circuit of the analgesic device to deliver too low a concentration of nitrous oxide to the patient and fail to achieve a good analgesic effect.

[0015] On the other hand, an embodiment of the utility model provides an analgesic device, including an inhalation air circuit and the above-mentioned alarm module, wherein the oxygen outlet and the nitrous oxide outlet are evenly connected to the inhalation air circuit, and the inhalation air circuit is used to be connected to a patient.

[0016] Optionally, the inhalation gas path includes a connected gas mixing chamber and an inhalation port, and two oxygen outlets are provided, which are respectively a first oxygen outlet and a second oxygen outlet, the first oxygen outlet is connected to the oxygen inlet, the first oxygen outlet and the laughing gas outlet are both connected to the gas mixing chamber, the second oxygen outlet is connected between the gas mixing chamber and the inhalation port, the first oxygen outlet and the second oxygen outlet are connected via a gas switch, and the gas switch is used to connect the first oxygen outlet with the second oxygen outlet when the laughing gas concentration in the gas mixing chamber is too high.

[0017] Optionally, the gas switch is an electromagnetic switch valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of an alarm module provided in one embodiment of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0020] Figure 3 for Figure 1 Another perspective of .

[0021] The accompanying drawings in the specification are marked as follows: 1. oxygen gas circuit; 2. oxygen inlet; 3. first oxygen outlet; 4. gas switch; 5. second oxygen outlet; 6. high-pressure alarm assembly; 7. high-pressure valve; 8. high-pressure branch; 9. low-pressure alarm assembly; 10. low-pressure valve; 11. low-pressure branch; 12. nitrous oxide gas circuit; 13. nitrous oxide inlet; 14. nitrous oxide shut-off valve; 15. nitrous oxide outlet; 16. pressure difference assembly; 17. alarm whistle; 18. vent; 19. oxygen chamber; 20. pressure relief chamber; 21. nitrous oxide chamber; 22. pressure relief port; 23. shell. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] like Figures 1 to 3As shown, an embodiment of the utility model provides an alarm module, including a shell 23 and a nitrous oxide gas circuit 12, an oxygen gas circuit 1, a pressure difference component 16 and an alarm unit arranged in the shell 23, the nitrous oxide gas circuit 12 includes a nitrous oxide inlet 13 for connecting to a nitrous oxide gas source and a nitrous oxide outlet 15 for connecting to an inhalation gas circuit of an analgesic device, and the oxygen gas circuit 1 includes an oxygen inlet 2 for connecting to an oxygen gas source and an oxygen outlet for connecting to the inhalation gas circuit.

[0024] The pressure difference component 16 is connected between the nitrous oxide inlet 13 and the nitrous oxide outlet 15, and is also connected between the oxygen inlet 2 and the oxygen outlet. The pressure difference component 16 includes a pressure relief port 22, and the pressure relief port 22 is used to discharge the oxygen in the oxygen gas circuit 1 when the pressure difference between oxygen and nitrous oxide is greater than a set value. The alarm unit is used to sound an alarm when the pressure difference between oxygen and nitrous oxide is greater than a set value.

[0025] In one embodiment, the pressure difference component 16 includes a laughing gas chamber 21, an oxygen chamber 19 and a pressure relief chamber 20, the laughing gas chamber 21 is connected between the laughing gas inlet 13 and the laughing gas outlet 15, the oxygen chamber 19 is connected between the oxygen inlet 2 and the oxygen outlet, the pressure relief chamber 20 is arranged between the laughing gas chamber 21 and the oxygen chamber 19, the pressure relief chamber 20 is used to communicate with the oxygen chamber 19 when the pressure difference between oxygen and laughing gas is greater than a set value, and the pressure relief port 22 is arranged in the pressure relief chamber 20. Specifically, the pressure relief port 22 is arranged on the outer wall of the pressure relief chamber 20, and is exposed on the surface of the pressure difference component 16.

[0026] In one embodiment, the laughing gas circuit 12 further includes a laughing gas shutoff valve 14, which is connected between the pressure difference component 16 and the laughing gas outlet 15, and is connected to the oxygen circuit 1. The laughing gas shutoff valve 14 is a normally open valve, and is used to close when the oxygen pressure is lower than a set value. When the oxygen pressure is lower than the set value, the oxygen circuit 1 will deliver too little oxygen to the inhalation circuit of the analgesic device, resulting in an excessively high concentration of laughing gas, which is harmful to the patient. At this time, the laughing gas shutoff valve 14 cuts off the passage of laughing gas into the inhalation circuit, reduces the delivery of laughing gas, and thus reduces the concentration of laughing gas.

[0027] In one embodiment, the alarm unit includes an alarm whistle 17, the alarm whistle 17 is connected to the pressure relief port 22, and the oxygen discharged from the pressure relief port 22 can blow the alarm whistle 17. Specifically, the alarm whistle 17 is provided with a plurality of vents 18, the alarm whistle 17 is connected to the pressure relief port 22, and the oxygen discharged from the pressure relief port 22 can be discharged through the vents 18 of the alarm whistle 17. In addition, the vents 18 can also emit a whistle when exhausting, forming an alarm sound effect.

[0028] In one embodiment, the alarm unit further includes an oxygen alarm component, which is connected between the oxygen gas circuit 1 and the pressure relief chamber 20, and is used to communicate with the pressure relief chamber 20 when the oxygen pressure exceeds a set range.

[0029] In one embodiment, the oxygen alarm assembly includes a high-pressure alarm assembly 6, which includes a high-pressure branch 8 and a high-pressure valve 7. The high-pressure branch 8 is connected between the oxygen gas circuit 1 and the pressure relief chamber 20. The high-pressure valve 7 is connected to the high-pressure branch 8. The high-pressure valve 7 is a normally closed valve, which is used to open when the oxygen pressure is greater than the high-pressure setting value to connect the high-pressure branch 8 with the pressure relief chamber 20. The high-pressure valve 7 can be opened when the oxygen pressure is too high, so that the oxygen in the oxygen gas circuit 1 passes through the high-pressure valve 7, the pressure relief chamber 20 and the pressure relief port 22, and is released from the vent 18 of the alarm whistle 17 to reduce the oxygen pressure.

[0030] In one embodiment, the oxygen alarm assembly further includes a low-pressure alarm assembly 9, which includes a low-pressure branch 11 and a low-pressure valve 10. The low-pressure branch 11 is connected between the oxygen gas circuit 1 and the pressure relief chamber 20, and the low-pressure valve 10 is connected to the low-pressure branch 11. The low-pressure valve 10 is used to be normally open when the oxygen pressure is lower than the low-pressure setting value to connect the low-pressure branch 11 with the pressure relief chamber 20, and the low-pressure valve 10 is used to be closed when the oxygen pressure is higher than the low-pressure setting value. When the oxygen in the oxygen source is insufficient, the low-pressure valve 10 is always kept open so that the alarm whistle 17 continues to whistle. When the oxygen pressure is higher than the low-pressure setting value after the oxygen is replaced, the low-pressure valve 10 is closed.

[0031] The alarm module of the embodiment of the utility model has the following working principle: when the oxygen in the oxygen source is insufficient, the low-pressure valve 10 is kept in an open state so that the alarm whistle 17 continues to whistle. When the oxygen pressure is higher than the low-pressure setting value after the oxygen is replaced, the low-pressure valve 10 is closed. When the oxygen pressure in the oxygen gas circuit 1 is higher than the high-pressure setting value, the high-pressure valve 7 is opened, so that the oxygen in the oxygen gas circuit 1 passes through the high-pressure valve 7, the pressure relief chamber 20 and the pressure relief port 22, and leaks out from the vent 18 of the alarm whistle 17, generating a whistle to remind medical staff, so that the oxygen in the oxygen is not lower than the low-pressure setting value and not higher than the high-pressure setting value. In addition, when the oxygen pressure in the oxygen gas circuit 1 is lower than the low-pressure setting value, the nitrous oxide shut-off valve 14 cuts off the passage between the nitrous oxide entering the inhalation gas circuit, reduces the nitrous oxide delivery, and avoids excessive nitrous oxide concentration.

[0032] According to the alarm module of the embodiment of the utility model, which is connected to the inhalation air circuit of the analgesic device, the pressure relief port 22 can discharge the oxygen in the oxygen circuit 1 when the pressure difference between oxygen and nitrous oxide is greater than a set value, so as to reduce the oxygen pressure in the oxygen circuit 1 to a set range, and the alarm unit can sound an alarm to remind medical staff to avoid excessive oxygen pressure, which may cause the inhalation air circuit of the analgesic device to deliver too low a concentration of nitrous oxide to the patient and fail to achieve a good analgesic effect.

[0033] In addition, an embodiment of the utility model further provides an analgesic device, including an inhalation air circuit and the above-mentioned alarm module, wherein the oxygen outlet and the nitrous oxide outlet 15 are evenly connected to the inhalation air circuit, and the inhalation air circuit is used to be connected to a patient.

[0034] The inhalation gas path includes a connected gas mixing chamber and an inhalation port, and the oxygen outlet is provided with two, the two oxygen outlets are respectively a first oxygen outlet 3 and a second oxygen outlet 5, the first oxygen outlet 3 is connected to the oxygen inlet 2, the first oxygen outlet 3 and the laughing gas outlet 15 are both connected to the gas mixing chamber, the second oxygen outlet 5 is connected between the gas mixing chamber and the inhalation port, the first oxygen outlet 3 and the second oxygen outlet 5 are connected by a gas switch, and the gas switch is used to connect the first oxygen outlet 3 with the second oxygen outlet 5 when the laughing gas concentration in the gas mixing chamber is too high. The gas switch is an electromagnetic switch valve. When the laughing gas concentration in the mixed gas chamber exceeds the set value, the first oxygen outlet 3 is connected to the second oxygen outlet 5, and part of the oxygen directly enters the inhalation gas path through the first oxygen outlet 3 and the second oxygen outlet 5, and the part of the oxygen is no longer mixed with the laughing gas in the gas mixing chamber, but directly enters the inhalation gas path downstream of the gas mixing chamber to quickly reduce the laughing gas concentration delivered to the patient's body.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An alarm module, characterized in that: The invention comprises a laughing gas circuit (12), an oxygen circuit (1), a pressure difference component (16) and an alarm unit, wherein the laughing gas circuit (12) comprises a laughing gas inlet (13) for connecting to a laughing gas source and a laughing gas outlet (15) for connecting to an inhalation circuit of an analgesic device, and the oxygen circuit (1) comprises an oxygen inlet (2) for connecting to an oxygen source and an oxygen outlet for connecting to the inhalation circuit; The pressure difference component (16) is connected between the laughing gas inlet (13) and the laughing gas outlet (15), and the pressure difference component (16) is also connected between the oxygen inlet (2) and the oxygen outlet. The pressure difference component (16) includes a pressure relief port (22), and the pressure relief port (22) is used to discharge the oxygen in the oxygen gas path (1) when the pressure difference between oxygen and laughing gas is greater than a set value. The alarm unit is used to issue an alarm when the pressure difference between oxygen and laughing gas is greater than a set value.

2. The alarm module according to claim 1, characterized in that: The pressure difference component (16) comprises a laughing gas chamber (21), an oxygen chamber (19) and a pressure relief chamber (20); the laughing gas chamber (21) is connected between the laughing gas inlet (13) and the laughing gas outlet (15); the oxygen chamber (19) is connected between the oxygen inlet (2) and the oxygen outlet; the pressure relief chamber (20) is arranged between the laughing gas chamber (21) and the oxygen chamber (19); the pressure relief chamber (20) is used to communicate with the oxygen chamber (19) when the pressure difference between oxygen and laughing gas is greater than a set value; and the pressure relief port (22) is arranged in the pressure relief chamber (20).

3. The alarm module according to claim 2, characterized in that: The nitrous oxide gas circuit (12) further comprises a nitrous oxide shutoff valve (14), the nitrous oxide shutoff valve being connected between the pressure difference component (16) and the nitrous oxide outlet (15), the nitrous oxide shutoff valve (14) being connected to the oxygen gas circuit (1), the nitrous oxide shutoff valve (14) being a normally open valve, and the nitrous oxide shutoff valve (14) being used to close when the oxygen pressure is lower than a set value.

4. The alarm module according to claim 2, characterized in that: The alarm unit comprises an alarm whistle (17), the alarm whistle (17) is in communication with the pressure relief port (22), and the oxygen discharged from the pressure relief port (22) can blow the alarm whistle (17).

5. The alarm module according to claim 2, characterized in that: The alarm unit further comprises an oxygen alarm component, which is connected between the oxygen gas circuit (1) and the pressure relief chamber (20), and is used to communicate with the pressure relief chamber (20) when the oxygen pressure exceeds a set range.

6. The alarm module according to claim 5, characterized in that: The oxygen alarm assembly comprises a high-pressure alarm assembly (6), the high-pressure alarm assembly (6) comprises a high-pressure branch (8) and a high-pressure valve (7), the high-pressure branch (8) is connected between the oxygen gas circuit (1) and the pressure relief chamber (20), the high-pressure valve (7) is connected to the high-pressure branch (8), the high-pressure valve (7) is a normally closed valve, and the high-pressure valve (7) is used to open when the oxygen pressure is greater than the high-pressure setting value, so as to connect the high-pressure branch (8) with the pressure relief chamber (20).

7. The alarm module according to claim 6, characterized in that: The oxygen alarm assembly further comprises a low-pressure alarm assembly (9), wherein the low-pressure alarm assembly (9) comprises a low-pressure branch (11) and a low-pressure valve (10), wherein the low-pressure branch (11) is connected between the oxygen gas circuit (1) and the pressure relief chamber (20), and the low-pressure valve (10) is connected to the low-pressure branch (11). When the oxygen pressure is lower than a low-pressure setting value, the low-pressure valve (10) is normally open to connect the low-pressure branch (11) with the pressure relief chamber (20), and when the oxygen pressure is higher than the low-pressure setting value, the low-pressure valve (10) is closed.

8. A pain relief device, characterized in that: It comprises an inhalation air circuit and the alarm module according to any one of claims 1 to 7, wherein the oxygen outlet and the nitrous oxide outlet (15) are evenly connected to the inhalation air circuit, and the inhalation air circuit is used to be connected to a patient.

9. The analgesic device according to claim 8, characterized in that: The inhalation gas path comprises a gas mixing chamber and an inhalation port connected to each other. The oxygen outlets are provided with two, and the two oxygen outlets are respectively a first oxygen outlet (3) and a second oxygen outlet (5). The first oxygen outlet (3) is connected to the oxygen inlet (2). The first oxygen outlet (3) and the laughing gas outlet (15) are both connected to the gas mixing chamber. The second oxygen outlet (5) is connected between the gas mixing chamber and the inhalation port. The first oxygen outlet (3) and the second oxygen outlet (5) are connected via a gas switch (4). The gas switch (4) is used to connect the first oxygen outlet (3) with the second oxygen outlet (5) when the laughing gas concentration in the gas mixing chamber is too high.

10. The analgesic device according to claim 9, characterized in that: The gas switch (4) is an electromagnetic switch valve.

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