Air bellow assembly for anaesthesia machine and anaesthesia machine with air bellow assembly

Abstract

The invention discloses an air bellow assembly for an anaesthesia machine and the anaesthesia machine thereof, and relates to the technical field of anaesthesia machines, the air bellow assembly comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with an air pipe connecting seat, the upper surface of the air pipe connecting seat is fixedly connected with an air bellow cover, the air bellow cover is provided with a containing cavity, and an air pipe is arranged in the air bellow cover; the air pipe is communicated with the air pipe connecting base, a fixing frame is arranged in the air bellow cover, and the air pipe is wound around the outer side of the fixing frame. By means of the design of the air pipe and the fixing frame, the air bellow is simple in structure, easy to disassemble and assemble and easy to clean and disinfect; and secondly, the air pipe and the fixing frame are low in manufacturing cost and disposable, so that the safety of the anaesthesia machine can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of anesthesia machines, and in particular to a bellows assembly for an anesthesia machine and the anesthesia machine. Background Art

[0002] Anesthesia machines are mainly used to provide oxygen, anesthesia and respiratory support to patients during surgery. As one of the main components of anesthesia machines, the respiratory system of anesthesia machines is a combined gas circuit device connecting the anesthesia machine and the patient. The respiratory system delivers anesthetic mixed gas to the patient and receives the patient's exhaled gas to achieve gas exchange for the patient's breathing and anesthesia.

[0003] In the related art, the breathing system of the anesthesia machine uses a bellows to achieve automatic ventilation. The bellows components in the prior art are all realized by a folding bag. When the patient inhales, the gas is driven into the bellows and compresses the folding bag in the bellows, pushing the gas in the folding bag through the breathing tube and delivered to the patient to complete the inhalation process; when the patient exhales, the gas exhaled by the patient enters the folding bag from the breathing tube and lifts up the folding bag to complete the exhalation process.

[0004] However, the folding bag in the prior art is not easy to clean. Secondly, the traditional folding bag needs to be folded repeatedly during operation, and the folding bag is prone to oxidation and aging, easy to absorb water and swell, and leaks, resulting in unstable operation and inaccurate gas supply, which greatly affects the safety and reliability of the anesthesia machine. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a bellows assembly for an anesthesia machine and an anesthesia machine.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A bellows assembly for an anesthesia machine and the anesthesia machine thereof, comprising a base plate, an upper surface of the base plate being fixedly connected to a trachea connecting seat, an upper surface of the trachea connecting seat being fixedly connected to a bellows cover, the bellows cover having a accommodating cavity, an trachea being arranged inside the bellows cover, the trachea being communicated with the trachea connecting seat, a fixing frame being arranged inside the bellows cover, and the trachea being wound around the outer side of the fixing frame.

[0008] Preferably, the air pipe is a silicone rubber hose.

[0009] Preferably, the length of the trachea is 4 to 5 m.

[0010] Preferably, the volume of the trachea is 800ml to 1200ml.

[0011] Preferably, the fixing frame is in a rectangular shape, through holes are provided at upper and lower ends of the fixing frame, and the fixing frame is made of a hard material.

[0012] Preferably, the air pipe is spiral-shaped. First, the air pipe is spirally wound upward along the outer wall of the fixing frame, and then the air pipe penetrates the fixing frame and is spirally wound along the side walls of the fixing frame.

[0013] An anesthesia machine comprising the above-mentioned bellows assembly for an anesthesia machine.

[0014] The beneficial effects of the present invention are:

[0015] 1. In the present invention, through the design of the trachea, there is no elastic element such as a folding bag. Since the traditional folding bag needs to be folded repeatedly when working, the present solution replaces the traditional folding bag with a trachea, which can solve the problems of the folding bag in the related art such as easy oxidation and aging damage, easy water absorption and expansion, etc., thereby allowing the bellows assembly to be used stably for a long time on the anesthesia machine, thereby improving the safety and reliability of the anesthesia machine.

[0016] 2. In the present invention, through the design of the trachea, the traditional folding bag is replaced by the trachea, and each pressure sensor and flow sensor can be directly installed on the pipeline, so that the above-mentioned bellows assembly can control the pressure and flow more accurately, and there will be no end-expiratory positive pressure that is difficult to accurately control like the traditional bellows-type folding bag.

[0017] 3. In the present invention, the length of the trachea is 0.8 to 2.5 m. The trachea is relatively short, and the air resistance of the tracheal circuit is relatively small, which can improve the breathing comfort of the patient.

[0018] 4. In the present invention, through the design of a slender air tube, the contact area between the mixed gas and the driving gas is very small, and the amount of anesthetic drugs diffused from the mixed gas to the driving gas is relatively small, thereby achieving non-physical isolation between the driving gas and the mixed gas carrying a large amount of anesthetic drugs, thereby ensuring that the concentration of anesthetic drugs in the gas delivered to the human body can quickly reach the set value and remain at the set value.

[0019] 5. In the present invention, the traditional folding bag is designed as a physical isolation. If the anesthesia machine leaks during surgery, the gas exhaled by the patient is not enough to fill the folding bag. In severe cases, the folding bag will collapse to the bottom, causing the anesthesia machine to be unable to supply gas to the patient, which may cause the patient to suffocate and die. The present invention uses the trachea as a non-physical isolation. Even if the trachea leaks, normal ventilation can be carried out to ensure the patient's life safety.

[0020] 6. In the present invention, the design of the trachea and the fixed frame is simple in structure, easy to disassemble and install, and easy to clean and disinfect; secondly, the manufacturing cost of the trachea and the fixed frame is low, and the trachea can be used once, thereby improving the safety of the anesthesia machine; and the trachea in this solution can be switched arbitrarily with the traditional folding bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic structural diagram of a bellows assembly for an anesthesia machine.

[0022] Figure 2 The present invention is a schematic structural diagram of an air pipe and a fixing frame of a bellows assembly for an anesthesia machine.

[0023] Figure 3 The present invention is a schematic structural diagram of a fixing frame of a bellows assembly for an anesthesia machine.

[0024] Figure 4 The present invention is a bellows assembly for an anesthesia machine and an air flow path diagram of the anesthesia machine.

[0025] Numbers in the figure: 1, bottom plate; 2, bellows cover; 3, air pipe; 4, air pipe connecting seat; 5, fixing frame. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] As attached Figure 1 To Attachment Figure 3 As shown:

[0028] A bellows assembly for an anesthesia machine includes a base plate 1, an upper surface of the base plate 1 is fixedly connected to a trachea connecting seat 4, an upper surface of the trachea connecting seat 4 is fixedly connected to a bellows cover 2, the bellows cover 2 has a accommodating cavity, an trachea 3 is arranged inside the bellows cover 2, the trachea 3 is communicated with the trachea connecting seat 4, a fixing frame 5 is arranged inside the bellows cover 2, and the trachea 3 is wound around the outer side of the fixing frame 5.

[0029] In the above technical solution, when the patient exhales, the mixed gas of the exhaled gas enters the trachea 3 through the trachea connecting seat 4 and one end of the trachea 3, and pushes the driving gas in the trachea 3 to the other end of the trachea 3, and part of the driving gas is discharged by the exhalation valve on the exhaust pipeline;

[0030] Since the total volume of the trachea 3 is larger than the tidal volume exhaled by the patient at one time, the patient enters the inhalation state before the mixed gas overflows from the other end of the trachea 3;

[0031] When the patient inhales, the driving gas enters the trachea 3 through the other end of the trachea 3 to push the mixed gas back from the trachea 3 and allow the mixed gas to be inhaled by the patient again.

[0032] Since the trachea 3 is a relatively slender tube, the contact area between the mixed gas and the driving gas is very small, and the amount of anesthetic drugs diffused from the mixed gas exhaled by the patient to the driving gas is small, thereby achieving non-physical isolation between the driving gas and the mixed gas carrying a large amount of anesthetic drugs, ensuring that the concentration of the anesthetic drugs in the gas delivered to the human body can quickly reach the set value and remain at the set value; the anesthetic drugs in the exhaled gas are reused, reducing the waste of anesthetic drugs.

[0033] It is worth mentioning that the other end of the trachea 3 is connected to two parallel pipelines, one is an exhaust pipeline, on which an exhalation valve 6 is installed for discharging part of the driving gas, and the other is an intake pipeline, on which an inhalation valve 7 is installed. When the patient inhales, the inhalation valve 7 opens, and the driving gas enters the trachea 3 through the intake pipeline, as shown in the attached figure. Figure 4 shown.

[0034] The air pipe 3 is a silicone rubber hose; the length of the air pipe 3 is 4 to 5 meters;

[0035] In the above technical solution, the length of the trachea 3 is relatively small, and the air resistance of the trachea 3 circuit is relatively small, which can improve the breathing comfort of the patient.

[0036] The volume of trachea 3 is 800ml~1200ml;

[0037] In the above technical solution, the total volume of the trachea 3 is greater than the tidal volume exhaled by the patient at one time.

[0038] The fixing frame 5 is in a rectangular shape, and through holes are formed at the upper and lower ends of the fixing frame 5 . The fixing frame 5 is made of a hard material.

[0039] In the above technical solution, the material for making the fixing frame 5 can be metal materials such as copper, aluminum, steel, etc., or plastic materials such as PPSU, etc.

[0040] The air pipe 3 is spirally shaped. First, the air pipe 3 is spirally wound upward along the outer wall of the fixing frame 5 , and then the air pipe 3 passes through the fixing frame 5 and is spirally wound along the side walls of the fixing frame 5 .

[0041] In the above technical solution, through the design of the fixing frame 5 , the air pipe 3 is fixed by the fixing frame 5 , so that the air pipe 3 can work stably in the bellows cover 2 .

[0042] It is worth mentioning that the connection method between the trachea 3 and the trachea connecting seat 4 in this solution is the same as the connection method between the traditional folding bag and the connecting seat. Therefore, the trachea 3 in this solution and the traditional folding bag can be switched arbitrarily.

[0043] An anesthesia machine comprising the above-mentioned bellows assembly for an anesthesia machine.

[0044] The specific usage and function of this embodiment are as follows:

[0045] When the present invention is used, when the patient exhales, the mixed gas of the exhaled gas enters the trachea 3 through the trachea connecting seat 4 and one end of the trachea 3, and pushes the driving gas in the trachea 3 to the other end of the trachea 3, and part of the driving gas is discharged from the exhalation valve on the exhaust pipeline; because the total volume of the trachea 3 is greater than the tidal volume exhaled by the patient at one time, the patient enters the inhalation state before the mixed gas overflows from the other end of the trachea 3; when the patient inhales, the driving gas enters the trachea 3 through the other end of the trachea 3 to push the mixed gas back from the trachea 3, and the mixed gas is inhaled by the patient again;

[0046] Since the trachea 3 is a relatively slender tube, the contact area between the mixed gas and the driving gas is very small, and the amount of anesthetic drugs diffused from the mixed gas to the driving gas is relatively small, thereby achieving non-physical isolation between the driving gas and the mixed gas carrying a large amount of anesthetic drugs, ensuring that the concentration of the anesthetic drugs in the gas delivered to the human body can quickly reach the set value and remain at the set value; the anesthetic drugs in the exhaled gas are reused, reducing the waste of anesthetic drugs.

[0047] For the above structure and process, please refer to Figure 1-3 .

[0048] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bellows assembly for an anesthesia machine, comprising a bottom plate (1), characterized in that: The upper surface of the base plate (1) is fixedly connected to a trachea connection seat (4), and the upper surface of the trachea connection seat (4) is fixedly connected to a bellows cover (2), the bellows cover (2) having a accommodating cavity, an trachea (3) being arranged inside the bellows cover (2), the trachea (3) being connected to the trachea connection seat (4), and a fixing frame (5) being arranged inside the bellows cover (2), the trachea (3) being wound around the outer side of the fixing frame (5).

2. The bellows assembly for an anesthesia machine according to claim 1, characterized in that: The air pipe (3) is a silicone rubber hose.

3. The bellows assembly for an anesthesia machine according to claim 1, characterized in that: The length of the air pipe (3) is 4 to 5 m.

4. The bellows assembly for an anesthesia machine according to claim 1, characterized in that: The volume of the trachea (3) is 800ml to 1200ml.

5. The bellows assembly for an anesthesia machine according to claim 1, characterized in that: The fixing frame (5) is in the shape of a rectangular parallelepiped. Through holes are provided at the upper and lower ends of the fixing frame (5). The fixing frame (5) is made of a hard material.

6. The bellows assembly for an anesthesia machine according to claim 5, characterized in that: The air pipe (3) is spirally shaped. First, the air pipe (3) is spirally wound upward along the outer wall of the fixed frame (5). Then, the air pipe (3) passes through the fixed frame (5) and is spirally wound along the side walls of the fixed frame (5).

7. An anesthesia machine comprising the bellows assembly for an anesthesia machine according to any one of claims 1 to 6.

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