Anaesthesia machine and integrated negative pressure aspirator

Abstract

The utility model discloses an integrated negative pressure aspirator which comprises a negative pressure generator, a negative pressure safety valve, a negative pressure switching turntable and a negative pressure regulating valve, the negative pressure generator is connected with an air source input end, the negative pressure generator, the negative pressure switching turntable and the negative pressure regulating valve are sequentially connected, and a pressure display and the negative pressure safety valve are sequentially arranged on an air path behind the negative pressure regulating valve; and a gas circuit behind the negative pressure safety valve is connected with a negative pressure switching turntable. According to the integrated negative pressure aspirator integrated block, parts do not need to be disassembled and assembled for disinfection, the labor cost is reduced, and the situation that the precision of the parts is affected due to repeated installation of the parts is avoided; a sealing mode is changed into an O-shaped ring sealing mode, so that the sealing effect on negative pressure and positive pressure can be achieved, the use precision of the anaesthesia machine is improved, and the treatment process of a patient is ensured; and the negative pressure safety valve seals the whole gas path by combining self gravity with negative pressure, so that the manufacturing cost is saved, and the unnecessary purchase cost of a hospital is also reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment and is mainly applied to an anesthesia machine, which is a suction device of an anesthesia machine gas circuit using negative pressure or a negative pressure source as power. Background Art

[0002] Negative pressure suction devices are widely used in anesthesia machines. They are easy to operate and are mainly used in the diagnosis and treatment of sputum, blood, pus and other body wastes. The principle is to use the vacuum working principle to generate negative pressure in the cavity, thereby guiding the liquid in the cavity out to achieve the purpose of sewage discharge and purification. It not only reduces the physical labor of medical staff, but also the suction is continuous and available at any time, greatly improving the efficacy. This system is suitable for use by medical staff during anesthesia surgery to guide body waste out of the body.

[0003] Figure 1 It is a structural diagram of the negative pressure suction device in the anesthesia machine of the prior art. The working principle is: when the gas source input end is connected to the negative pressure generating module 1 through the pipeline, the gas passes through the negative pressure switch knob 5 (open state), and the gas passes through the negative pressure generator 4. The gas coming out of the negative pressure generator is negative pressure gas, which passes through the negative pressure safety valve 3, the valve sheet seal 2, and exits the negative pressure generator module 1 through the external pipeline to enter the negative pressure regulating valve 7 in the negative pressure regulating module 6. There is a negative pressure regulating knob 8 (to adjust the negative pressure), and the pressure display 9 shows the specific value of the negative pressure. It passes through the valve sheet seal 2 and is connected to the external pipeline again to enter the patient input end of the negative pressure generator module 1. When there is a gas blockage in the gas circuit, the spring member of the safety valve 3 will push open the safety valve to achieve the pressure relief effect.

[0004] The negative pressure aspirator in the anesthesia machine in the prior art mainly has the following shortcomings:

[0005] 1. The existing technology is to separate the negative pressure generating system and the negative pressure regulating system, and use them through external pipes. All pipes and detachable parts that come into contact with patients are disassembled and disinfected. This will waste daily maintenance time and affect the service life of parts; increase the maintenance cost of the hospital and increase the probability of cross infection among patients.

[0006] 2. In the existing negative pressure pipeline system, the air circuit is sealed with a diaphragm seal. This design of negative pressure will cause the diaphragm to deform and affect the air pressure accuracy if used for a long time. If the air circuit needs to release positive pressure due to a fault, it is difficult to seal the positive pressure due to the high air circuit pressure; this will affect the doctor's accurate reception of data, thereby affecting the patient's treatment.

[0007] 3. The existing negative pressure safety valve uses a spring-supported negative pressure safety valve. When safely exhausting, the spring pushes open the negative pressure safety valve to achieve the safety of the entire gas path; this adds a part, increases the maintenance assembly time, and increases unnecessary procurement costs for hospitals and manufacturers. Utility Model Content

[0008] In order to solve the above technical problems, the utility model provides an integrated negative pressure suction device, including a negative pressure generator, a negative pressure safety valve, a negative pressure switching dial, and a negative pressure regulating valve. The negative pressure generator is connected to the gas source input end, and the negative pressure generator, the negative pressure switching dial, and the negative pressure regulating valve are connected in sequence. The gas path behind the negative pressure regulating valve is provided with a pressure display and a negative pressure safety valve in sequence; the gas path behind the negative pressure safety valve is connected to the negative pressure switching dial; a negative pressure gas outlet end is provided on the negative pressure switching dial, and the negative pressure gas outlet end is connected to the patient input end by adjusting the negative pressure switching dial.

[0009] Preferably, the negative pressure safety valve is located above the air circuit pipeline, and an air circuit block is provided at the position where the air circuit pipeline and the negative pressure safety valve are connected, and a through hole is provided in the middle of the air circuit block; the negative pressure safety valve comprises a negative pressure safety valve cap, a negative pressure safety valve stem, an O-ring and a fixing part, the negative pressure safety valve cap is located in the through hole in the middle of the air circuit block, the negative pressure safety valve stem is located in the center of the negative pressure safety valve cap, and is threadedly connected to the negative pressure safety valve cap; the head of the negative pressure safety valve stem and the inner side of the air circuit block are sealed by an O-ring, and the negative pressure safety valve cap is fixed to the outer side of the air circuit block by a fixing part; the negative pressure safety valve cap is an elastic part.

[0010] Preferably, it also includes a negative pressure switching knob, and the negative pressure switching dial is connected to the negative pressure switching knob; the negative pressure switching dial is provided with a closing gear, a pressure regulating gear, and a running gear. When the negative pressure switching dial is switched to the pressure regulating gear, the gas path behind the negative pressure safety valve is connected to the negative pressure switching dial; the gas passes through the airway conversion of the negative pressure switching dial, passes through the negative pressure regulating valve, the pressure display, the negative pressure safety valve in turn, and then returns to the airway in the negative pressure switching dial to form a loop;

[0011] When the negative pressure switching dial is switched to the running gear, the gas passes through the airway conversion of the negative pressure switching dial and passes through the negative pressure regulating valve, pressure display, and negative pressure safety valve in sequence. The gas path behind the negative pressure safety valve is connected to the patient input end.

[0012] Preferably, the negative pressure switching dial includes an outer shell and an inner component, the inner component is located inside the outer shell, and is provided with a negative pressure air inlet and a negative pressure gas outlet. The outer shell is provided with two arc holes, and the negative pressure air inlet is located on one of the arc holes and is connected to the output end of the negative pressure generator; the outer shell can rotate around the center relative to the inner component under the drive of the negative pressure switching knob, and the outer shell and the inner component are sealed and movably connected; the negative pressure switching dial is switched to the pressure regulating gear, and is connected with the passage of the negative pressure regulating valve, and the negative pressure gas passes through the negative pressure regulating valve and the negative pressure safety valve and then returns to the negative pressure gas outlet in the negative pressure switching dial, and the negative pressure gas outlet is covered by the outer shell; when the negative pressure switching dial is switched to the running gear, the negative pressure gas outlet is exposed at the other arc hole, and the negative pressure gas outlet is connected with the patient input end.

[0013] Preferably, the integrated negative pressure suction device is provided with a port I, and the port I is used to be connected to the air source input end.

[0014] Preferably, the integrated negative pressure suction device is provided with port II, which is used to be connected to the liquid collection bottle, and the patient input end is located at the other end of the liquid collection bottle.

[0015] Preferably, the integrated negative pressure suction device is provided with a port III, and the port III is connected to a muffler.

[0016] An anesthesia machine comprises the above-mentioned integrated negative pressure aspirator.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The integrated negative pressure aspirator block disinfection does not require disassembly of parts, which reduces labor costs and avoids repeated installation of parts that affects the accuracy of parts.

[0019] 2. The sealing method is changed to a sealing press fit between the negative pressure switching dial and the negative pressure switching valve seat (the valve opening and closing is controlled by rotating motion), which can seal both negative pressure and positive pressure; this improves the accuracy of the anesthesia machine and ensures the patient's treatment progress.

[0020] 3. The negative pressure safety valve seal uses its own gravity combined with negative pressure to seal the entire gas path, saving manufacturing costs and reducing unnecessary procurement costs for hospitals.

[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following is a preferred embodiment, and is described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1It is a schematic diagram of the structure of a negative pressure aspirator in an anesthesia machine in the prior art.

[0023] Figure 2 The utility model is an integrated negative pressure aspirator gas circuit principle diagram.

[0024] Figure 3 It is a structural diagram of a negative pressure safety valve.

[0025] Figure 4 This is a schematic diagram of the negative pressure switching dial being in the closed position.

[0026] Figure 5 This is a schematic diagram of the negative pressure switching dial being in the pressure adjustment position.

[0027] Figure 6 This is a schematic diagram of the negative pressure switching dial being in the running position.

[0028] Figure 7 This is an external structural view of the integrated negative pressure aspirator of the utility model.

[0029] In the integrated negative pressure aspirator of the present invention, the following specific elements / parts are indicated by the following reference numerals:

[0030] 1. Negative pressure generator module; 2. Valve seal 3. Negative pressure safety valve; 31. Negative pressure safety valve cap; 32. Negative pressure safety valve stem; 33. O-ring; 34; Air circuit block; 35. Fixing parts; 4. Negative pressure generator; 5. Negative pressure switch knob; 6. Negative pressure regulating module; 7. Negative pressure regulating valve; 8. Negative pressure regulating knob; 9. Pressure display; 10. Negative pressure suction device integrated block; 11. Negative pressure switching dial (a is the closing gear, b is the pressure regulating gear, and c is the running gear); 111. Negative pressure inlet end; 112. Negative pressure gas outlet end; 12. Negative pressure switching knob; 13. Port I; 14. Port II; 15. Port III; 16. Gas source input end; 17. Patient input end; 18. Liquid collection bottle; 19. Muffler. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be clearly and completely described below in conjunction with specific implementation schemes, but those skilled in the art should understand that the implementation schemes described below are only used to illustrate the utility model and should not be regarded as limiting the scope of the utility model. Based on the implementation schemes in the utility model, all other implementation schemes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0032] like Figure 2-7As shown, the utility model discloses an integrated negative pressure suction device, including a negative pressure generator 4, a negative pressure safety valve 3, a negative pressure switching dial 11, and a negative pressure regulating valve 7. The negative pressure generator 4 is connected to an air source input terminal 16, and the negative pressure generator 4, the negative pressure switching dial 11, and the negative pressure regulating valve 7 are connected in sequence. A pressure display 9 and a negative pressure safety valve 3 are provided in sequence on the air path behind the negative pressure regulating valve 7; the air path behind the negative pressure safety valve 3 is respectively connected to a patient input terminal 17 and the negative pressure switching dial 11.

[0033] The integrated negative pressure suction device also includes a negative pressure switching knob 12, and the negative pressure switching dial 11 is connected to the negative pressure switching knob 12; the negative pressure switching dial 11 is provided with a closing gear, a pressure regulating gear, and a running gear. When the negative pressure switching dial 11 is switched to the pressure regulating gear, the gas path behind the negative pressure safety valve 3 is connected to the negative pressure switching dial 11; the gas passes through the airway conversion of the negative pressure switching dial 11, passes through the negative pressure regulating valve 7, the pressure display 9, the negative pressure safety valve 3 in turn, and then returns to the airway in the negative pressure switching dial 11 to form a loop;

[0034] When the negative pressure switching dial 11 is switched to the running gear, the gas passes through the airway conversion of the negative pressure switching dial 11 and passes through the negative pressure regulating valve 7, the pressure display 9, and the negative pressure safety valve 3 in sequence. The air path behind the negative pressure safety valve 3 is connected to the patient input terminal 17, providing the patient with a continuous and stable negative pressure gas source.

[0035] The seal of the integrated negative pressure aspirator air circuit is an O-ring.

[0036] like Figure 3As shown, the negative pressure safety valve 3 is located above the gas pipeline, and a hole is provided at the top of the pipeline. The negative pressure safety valve 3 is located in the hole and is movably connected to the pipeline. A gas circuit block 34 is provided at the part where the gas pipeline and the negative pressure safety valve 3 are connected. The negative pressure safety valve 3 includes a negative pressure safety valve cap 31, a negative pressure safety valve stem 32, an o-ring 33 and a fixing member 35. The negative pressure safety valve cap 31 is located in the hole in the middle of the gas circuit block 34. The negative pressure safety valve stem 32 is located at the center of the negative pressure safety valve cap 31 and is threadedly connected to the negative pressure safety valve cap 31. The head of the negative pressure safety valve stem 32 is sealed with the inner side of the gas circuit block 34 by an o-ring 33. The negative pressure safety valve cap 31 is fixed to the outer side of the gas circuit block 34 by a fixing member 35. The negative pressure safety valve stem 32 can be rotated to adjust the position of the negative pressure safety valve stem 32. The negative pressure safety valve cap 31 can be elastically deformed under the action of external force. The negative pressure safety valve cap 31 is provided with a hole connected to the outer side of the gas channel. When a certain negative pressure value is reached in the air pipeline, the negative pressure safety valve stem 32 presses the o-ring 33 to deform under the action of its own gravity and the suction of the negative pressure. The greater the negative pressure, the greater the suction, thus achieving the pressure-maintaining function. When the airway is blocked, the tube is broken, or other airway failures occur. At this time, positive pressure will be generated in the airway, and the positive pressure will lift up the negative pressure safety valve stem 32, achieving positive pressure to unload the pressure and achieving the pressure relief function. This protects the equipment airway and ensures the safety of the patient; it greatly reduces the irreversible harm caused by airway failures to the patient's airway.

[0037] The integrated negative pressure suction device is provided with a port I 13 , and the port I 13 is used to be connected to a gas source input end 16 .

[0038] The integrated negative pressure suction device is provided with a port II 14 , which is used to be connected to a liquid collecting bottle 18 , and a patient input terminal 17 is located at the other end of the liquid collecting bottle 18 .

[0039] The integrated negative pressure suction device is provided with a III port 15 , and the III port 15 is connected to a muffler 19 .

[0040] The utility model combines the negative pressure generator module and the negative pressure regulating module into a negative pressure suction device integrated block. The gas source input gas passes through the negative pressure generator 4, and passes through the negative pressure switching dial 11 from the negative pressure generator 4. The negative pressure switching dial is controlled by the negative pressure switching knob 12. The negative pressure switching dial 11 is provided with a closing gear, a pressure regulating gear, and a running gear (respectively Figure 2 When the negative pressure switch dial 11 is switched to the pressure adjustment gear, the gas passes through the airway of the negative pressure switch dial 11, passes through the negative pressure regulating valve 7 (the negative pressure regulating valve is controlled by the negative pressure regulating knob 8), and then displays the accurate value through the pressure display 9. After passing through the negative pressure safety valve 3 (the safety valve is sealed by its own gravity, and the airway will automatically push out when exhausting), it returns to the airway in the negative pressure switch dial 11 to form a loop. The airway diagram is shown as a thin arrow.

[0041] When the negative pressure switching dial 11 is switched to the running gear, the gas passes through the airway conversion of the negative pressure switching dial 11, passes through the negative pressure regulating valve 7 (the negative pressure regulating valve is controlled by the negative pressure regulating knob 8), and then displays the accurate value through the pressure display 9. The gas that comes out of the negative pressure safety valve 3 (the safety valve seals by its own gravity, and the gas path will automatically push out when exhausting) enters the patient input terminal 17, providing a continuous and stable negative pressure gas source for the patient. The gas path diagram is shown as a thick arrow.

[0042] like Figure 4-6 As shown, the negative pressure switching dial 11 includes an outer shell and an inner part. The inner part is located inside the outer shell. A negative pressure air inlet 111 and a negative pressure gas outlet 112 are provided on the inner part. Two arc holes are provided on the outer shell. The negative pressure air inlet 111 is located on one of the arc holes and is connected to the output end of the negative pressure generator 4. The gas path behind the negative pressure safety valve 3 is connected to the negative pressure switching dial 11. The outer shell can rotate around the center relative to the inner part under the drive of the negative pressure switching knob 12, and the outer shell and the inner part are sealed and movably connected. When the gear is closed, the negative pressure air inlet 111 is located at the end of a arc hole, and the negative pressure gas outlet 112 is covered by the outer shell. The negative pressure switching dial 11 is disconnected from the connection hole of the negative pressure regulating valve 7 and the passage of the negative pressure regulating valve 7. Rotate the negative pressure switching knob 12, the negative pressure switching dial 11 switches to the pressure regulating gear, and the connection hole with the negative pressure regulating valve 7 is exposed, and the negative pressure regulating valve 7 is connected to the negative pressure regulating valve 7. 7 is connected, and the negative pressure gas passes through the negative pressure regulating valve 7 and the negative pressure safety valve 3 and then returns to the negative pressure gas outlet end 112 in the negative pressure switching dial 11, and the negative pressure gas outlet end 112 is covered by the shell; when the negative pressure switching dial 11 is switched to the running gear, the negative pressure inlet end 111 is located at the other end of the arc hole, and the negative pressure gas outlet end 112 is exposed at the other arc hole, and the negative pressure gas outlet end 112 is connected with the patient input end 17, and the gas coming out of the negative pressure safety valve 3 enters the patient input end 17.

[0043] The utility model integrates a negative pressure regulator on a negative pressure generator, adopts a highly integrated manner of a negative pressure generator module and a negative pressure regulating module, uses an O-ring to seal the entire gas path, and can seal both positive and negative pressures; the negative pressure safety valve seal adopts its own gravity combined with negative pressure to seal the entire gas path.

[0044] Advantages of the utility model:

[0045] 1: Integrated negative pressure suction device manifold, saving maintenance and disassembly time.

[0046] 2: The existing diaphragm seal is changed to an O-ring seal, which can seal both negative and positive pressures, thus improving the accuracy of the anesthesia machine.

[0047] 3: The negative pressure safety valve seal uses its own gravity combined with negative pressure to seal the entire gas path, which removes a spring part and reduces an assembly part.

[0048] Figure 7 This is the external structure view of the integrated negative pressure aspirator of the utility model. Please refer to the gas circuit schematic diagram Figure 2 .

[0049] The principle and internal air circuit of this embodiment will not be repeated here, and the external connection connected to the integrated negative pressure aspirator will be described here.

[0050] The connection of port 13 is the connection between the gas source input end 16 and the integrated negative pressure suction device.

[0051] This connection is the power part of the entire negative pressure aspirator. In order to obtain a steady stream of negative pressure output, a stable air source input and unobstructed airway must be ensured.

[0052] The connection of port II 14 is the connection between the liquid collection bottle 18 and the integrated negative pressure aspirator.

[0053] This connection is the output part of negative pressure, and the harmful substances sucked out by the negative pressure at the patient input end 17 are all collected in the liquid collecting bottle 18 in this connection, and the liquid collecting bottle 18 is the carrying part of the harmful substances. When the harmful substances reach the specified capacity, they can be replaced and can continue to be used after being connected.

[0054] The connection of port III 15 is the connection between the muffler 19 and the integrated negative pressure suction device.

[0055] This connection is for the silencing of the noise generated by the whole airway. This connection must ensure that the airway is unobstructed, otherwise the negative pressure aspirator will not generate negative pressure. Due to technical principles, the negative pressure aspirator will generate certain noise during operation, which will cause environmental noise pollution to patients and medical staff, affecting the work of medical staff and the normal rest of patients, so a silencer is connected to eliminate noise.

[0056] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An integrated negative pressure aspirator, comprising a negative pressure generator (4) and a negative pressure safety valve (3), characterized in that: The invention also comprises a negative pressure switching dial (11) and a negative pressure regulating valve (7); the negative pressure generator (4) is connected to the gas source input end (16); the negative pressure generator (4), the negative pressure switching dial (11) and the negative pressure regulating valve (7) are connected in sequence; a pressure display (9) and a negative pressure safety valve (3) are provided in sequence on the gas path behind the negative pressure regulating valve (7); the gas path behind the negative pressure safety valve (3) is connected to the negative pressure switching dial (11); a negative pressure gas outlet end (112) is provided on the negative pressure switching dial (11); by adjusting the negative pressure switching dial (11), the negative pressure gas outlet end (112) is connected to the patient input end (17).

2. The integrated negative pressure aspirator according to claim 1, characterized in that: The negative pressure safety valve (3) is located above the gas pipeline. A gas pipeline block (34) is provided at the position where the gas pipeline and the negative pressure safety valve (3) are connected. A through hole is provided in the middle of the gas pipeline block (34). The negative pressure safety valve (3) comprises a negative pressure safety valve cap (31), a negative pressure safety valve stem (32), an O-ring (33) and a fixing member (35). The negative pressure safety valve cap (31) is located in the through hole in the middle of the gas pipeline block (34). The negative pressure safety valve stem (32) is located at the center of the negative pressure safety valve cap (31) and is threadedly connected to the negative pressure safety valve cap (31). The head of the negative pressure safety valve stem (32) and the inner side of the gas pipeline block (34) are sealed by an O-ring (33). The negative pressure safety valve cap (31) and the outer side of the gas pipeline block (34) are fixed by a fixing member (35). The negative pressure safety valve cap (31) is an elastic member.

3. The integrated negative pressure aspirator according to claim 1 or 2, characterized in that: It also includes a negative pressure switching knob (12), and the negative pressure switching dial (11) is connected to the negative pressure switching knob (12); the negative pressure switching dial (11) is provided with a closing gear, a pressure regulating gear, and a running gear. When the negative pressure switching dial (11) is switched to the pressure regulating gear, the gas path behind the negative pressure safety valve (3) is connected to the negative pressure switching dial (11); after passing through the negative pressure switching dial (11), the gas passes through the negative pressure regulating valve (7), the pressure display (9), the negative pressure safety valve (3) in sequence, and then returns to the negative pressure switching dial (11); When the negative pressure switching dial (11) is switched to the running gear, the gas passes through the negative pressure switching dial (11) and then passes through the negative pressure regulating valve (7), the pressure display (9), and the negative pressure safety valve (3) in sequence, and the gas path behind the negative pressure safety valve (3) is connected to the patient input end (17).

4. The integrated negative pressure aspirator according to claim 3, characterized in that: The negative pressure switching dial (11) comprises an outer shell and an inner part, wherein the inner part is located inside the outer shell, and is provided with a negative pressure air inlet end (111) and a negative pressure gas outlet end (112), and the outer shell is provided with two arc holes, wherein the negative pressure air inlet end (111) is located on one of the arc holes, and the negative pressure air inlet end (111) is connected to the output end of the negative pressure generator (4); the outer shell can rotate around the center relative to the inner part under the drive of the negative pressure switching knob (12), and the outer shell and the inner part are sealed and movably connected; the negative pressure The switching dial (11) is switched to the pressure regulating gear and is connected to the passage of the negative pressure regulating valve (7). The negative pressure gas passes through the negative pressure regulating valve (7) and the negative pressure safety valve (3) and then returns to the negative pressure gas outlet (112) in the negative pressure switching dial (11). The negative pressure gas outlet (112) is covered by the shell. When the negative pressure switching dial (11) is switched to the running gear, the negative pressure gas outlet (112) is exposed at another arc hole, and the negative pressure gas outlet (112) is connected to the patient input terminal (17).

5. The integrated negative pressure aspirator according to claim 1, characterized in that: The integrated negative pressure suction device is provided with a port I (13), and the port I (13) is used to be connected to a gas source input end (16).

6. The integrated negative pressure aspirator according to claim 1, characterized in that: The integrated negative pressure suction device is provided with a port II (14), the port II (14) is used to be connected to a liquid collecting bottle (18), and the patient input end (17) is located at the other end of the liquid collecting bottle (18).

7. The integrated negative pressure aspirator according to claim 1, characterized in that: The integrated negative pressure suction device is provided with a III port (15), and the III port (15) is connected to a muffler (19).

8. An anesthesia machine, characterized in that: An integrated negative pressure aspirator comprising any one of claims 1 to 7.

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