Gas flow adjusting device for anaesthesia machine

Abstract

The utility model discloses a gas flow regulating device for an anaesthesia machine, which comprises gas inlet pipes which are arranged on the outer side of the front end of a mounting body at equal intervals, gas inlet channels are arranged in the gas inlet pipes in a penetrating manner, pressure regulating units are arranged on the front side of the upper end of the mounting body at equal intervals, and a regulating needle valve is arranged in the mounting body; the control motor is fixedly mounted on the outer side of the rear end of the mounting body, and the output end of the control motor is connected with a motor transmission shaft located in the mounting body; the protruding block is integrally and fixedly installed on the outer side of the rear end of the adjusting needle valve. The utility model belongs to the technical field of electronic flow meters, and aims to solve the problems that in the prior art, electric energy is easy to consume, power consumption is high, and water vapor can be condensed in a proportional valve when the water vapor of a gas source is high. The surgical mask has the advantages that water can be well isolated, and meanwhile energy consumption in the surgical process can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic flow meters, in particular to a gas flow regulating device for an anesthesia machine. Background Art

[0002] The gas flow regulating device is an important component of the anesthesia machine. During the operation, oxygen or a mixture of oxygen, air and nitrous oxide needs to be delivered to the absorption circuit of the anesthesia machine to continuously provide fresh gas for the patient's breathing and prevent the patient from being insufficiently oxygenated. Fresh gas needs to be delivered to the patient at a certain flow rate, and an electronic flow meter is needed to achieve the above-mentioned flow regulation function.

[0003] There are two types of flow meters for existing anesthesia machines, one is a mechanical flow meter and the other is an electronic flow meter. The electronic flow meter uses a proportional valve to achieve flow regulation. Its working principle is to input the gas source into the pressure regulating valve, and the pressure regulating valve provides gas with stable pressure to the proportional valve. The gas output by the proportional valve passes through the flow sensor and is provided to the patient for use. However, the proportional valve is an electromagnetic principle, that is, it needs to be in a powered state at all times when powered on to function. As a result, the proportional valve consumes electricity all the time during the use of the anesthesia machine, with high power consumption and energy waste. At the same time, when the water vapor in the gas source is high, the water vapor will condense in the proportional valve, affecting the motion characteristics of the structural components in the proportional valve, resulting in a decrease in control accuracy. In the most serious case, the control target may not be achieved, which may cause dangerous consequences to the patient. Utility Model Content

[0004] To this end, the utility model provides a gas flow regulating device for an anesthesia machine to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] According to a first aspect of the present invention, a gas flow regulating device for an anesthesia machine comprises:

[0007] An air intake pipe is installed at equal intervals on the outside of the front end of the mounting body, and an air intake channel is opened inside the air intake pipe. Pressure regulating units are provided at equal intervals on the front side of the upper end of the mounting body, and a regulating needle valve is installed inside the mounting body;

[0008] A control motor is fixedly mounted on the rear end of the mounting body, and an output end of the control motor is connected to a motor drive shaft located in the mounting body;

[0009] A protrusion is integrally fixedly mounted on the rear outer side of the regulating needle valve, and the outer side of the protrusion is connected to a positioning block mounted inside the rear inner side of the mounting body;

[0010] A matching groove adapted to the motor drive shaft is provided inside the rear end of the regulating needle valve, and the motor drive shaft is connected to the regulating needle valve in a snap-fit manner through the matching groove;

[0011] A flow collection structure located behind the pressure regulating unit is installed in the middle of the upper end of the installation body.

[0012] Furthermore, the air inlet channel is connected to the mounting body, and the pressure regulating unit and the air inlet channel are arranged in a one-to-one correspondence.

[0013] Furthermore, a sealing isolation piece is provided at the connection between the regulating needle valve and the mounting body, and an air outlet pipe is installed in the middle of the inner side of the mounting body.

[0014] Furthermore, the air outlet pipe is located at the lower side of the front end of the regulating needle valve, and the left end of the air outlet pipe is located outside the mounting body.

[0015] Furthermore, the outer side of the regulating needle valve is connected to a valve body fixedly installed in the installation body by screws, and a threaded structure is provided on the outer side of the rear end of the regulating needle valve.

[0016] The utility model has the following advantages:

[0017] 1. Through the control motor, when in use, the control motor drives the regulating needle valve to rotate. After rotating to the command flow position, the control motor stops running. At this time, before receiving the next flow command, the whole body no longer uses electricity. In fact, during the operation, the anesthesia machine only adjusts the flow 3 to 4 times, and the control motor takes only a dozen seconds at most to adjust the flow each time. The energy consumption during this period is negligible. After adjusting to the target flow, it is no longer powered, so no electricity is consumed, which can save energy consumption during the operation.

[0018] 2. The gas input through the air inlet channel and the gas output through the air outlet pipe are separated into two independent parts by a sealing isolation component, and the control unit composed of a regulating needle valve and a control motor is separated into two independent parts. Even if the source gas contains a high moisture content, the moisture will still be isolated outside the control unit and will not enter the control unit and cause harmful effects.

[0019] 3. Through the convex block, the convex block is a protruding structure on the regulating needle valve, which is used to adjust the zero position control of the needle valve. When the regulating needle valve drives the convex block to rotate to the position where it contacts the positioning block, the position where the flow rate of this gas path is 0 is reached. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall diagram of a gas flow regulating device for an anesthesia machine provided in some embodiments of the present invention.

[0021] Figure 2This is an overall diagram of the connection between a protrusion and a positioning block of a gas flow regulating device for an anesthesia machine provided in some embodiments of the present invention.

[0022] Figure 3 A top view of a gas flow regulating device for an anesthesia machine provided in some embodiments of the present invention.

[0023] Figure 4 A gas flow regulating device for an anesthesia machine provided in some embodiments of the present invention Figure 3 Cross-section view at AA in the middle.

[0024] In the figure: 1. Mounting body, 2. Air inlet pipe, 3. Air inlet channel, 4. Pressure regulating unit, 5. Sealing isolation component, 6. Adjusting needle valve, 7. Valve body, 8. Control motor, 9. Motor drive shaft, 10. Matching groove, 11. Flow collection structure, 12. Bump, 13. Positioning block, 14. Air outlet pipe. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0026] Example 1

[0027] like Figures 1 to 4 As shown, a gas flow regulating device for an anesthesia machine in an embodiment of the first aspect of the present utility model comprises: an air inlet pipe 2 is installed at equal intervals on the front outer side of a mounting body 1, and an air inlet channel 3 is opened through the interior of the air inlet pipe 2, and three groups of air inlet pipes 2 are provided on the front outer side of the mounting body 1, and the air inlet channels 3 are connected to the mounting body 1, and are respectively used to control the oxygen flow, air flow and nitrous oxide flow, and pressure regulating units 4 are provided at equal intervals on the front side of the upper end of the mounting body 1, and the pressure regulating units 4 are arranged in a one-to-one correspondence with the air inlet channels 3, and each group of air inlet pipes 2 can be adjusted separately, so as to provide gas with stable pressure for subsequent steps;

[0028] And an adjusting needle valve 6 is installed inside the mounting body 1, and the outer side of the adjusting needle valve 6 is connected to a valve body 7 fixedly installed in the mounting body 1 by screws, and a threaded structure is provided on the outer side of the rear end of the adjusting needle valve 6. During installation, the valve body 7 can be first inserted into the mounting body 1 and fixed by screws, and then the adjusting needle valve 6 is installed inside the valve body 7 for adjusting the output flow. The control motor 8 is fixedly installed on the outer side of the rear end of the mounting body 1, and the output end of the control motor 8 is connected to a motor drive shaft 9 located in the mounting body 1. A matching groove 10 that matches the motor drive shaft 9 is provided inside the rear end of the adjusting needle valve 6, and the motor drive shaft 9 is connected to the adjusting needle valve 6 in a snap-fit manner through the matching groove 10. The motor drive shaft 9 is matched with the adjusting needle valve 6 through the matching groove 10. The control motor 8 is used to adjust each group of adjusting needle valves 6 to the required actual flow. When the control motor 8 is started, the motor drive shaft 9 is driven to rotate. At this time, the matching between the motor drive shaft 9 and the matching groove 10 drives the thread of the adjusting needle valve 6 to rotate, thereby achieving the purpose of adjusting the flow.

[0029] The protrusion 12 is integrally fixedly installed on the outer side of the rear end of the regulating needle valve 6, and the outer side of the protrusion 12 is connected to the positioning block 13 installed inside the rear end of the mounting body 1. The protrusion 12 is a protruding structure on the regulating needle valve 6, which is used to adjust the zero position control of the needle valve 6. When the regulating needle valve 6 drives the protrusion 12 to rotate to the position in contact with the positioning block 13, the position where the flow rate of this gas path is 0 is reached, which can effectively prevent leakage and flow failure to return to zero caused by long-term excessive fit and wear of the regulating needle valve 6 and the valve body 7. A flow collection structure 11 located behind the pressure regulating unit 4 is installed in the middle of the upper end of the mounting body 1. The flow collection structure 11 is a flow collection device, which is used to collect the actual flow of the mixed gas and provide data for feedback control and safety control.

[0030] A sealing isolator 5 is provided at the connection between the regulating needle valve 6 and the mounting body 1 for sealing and isolating the front and rear stages, and an air outlet pipe 14 is installed in the middle of the inner side of the mounting body 1. The air outlet pipe 14 is located at the lower front end of the regulating needle valve 6, and the left end of the air outlet pipe 14 is located outside the mounting body 1. The flow meter uses the sealing isolator 5 to separate the gas input through the air inlet channel 3 and the gas output through the air outlet pipe 14 from the control unit composed of the regulating needle valve 6 and the control motor 8 into two independent parts. Even if the source gas contains a high amount of moisture, the moisture will still be isolated outside the control unit and will not enter the control unit and cause harmful effects.

[0031] When this flow meter receives a specific flow instruction, the control motor 8 drives the regulating needle valve 6 to rotate. After rotating to the instruction flow position, the control motor 8 stops running. At this time, before receiving the next flow instruction, the whole device no longer uses electricity. In fact, during the operation, the anesthesia machine only adjusts the flow 3 to 4 times, and the control motor 8 only takes a dozen seconds at most to adjust the flow each time. The energy consumption during this period is negligible. After adjusting to the target flow, the power is no longer supplied, so no electricity is consumed, which can save energy consumption during the operation.

Claims

1. A gas flow regulating device for an anesthesia machine, characterized in that: include: An air intake pipe (2) is installed at equal intervals on the outside of the front end of the mounting body (1), and an air intake passage (3) is provided inside the air intake pipe (2). Pressure regulating units (4) are provided at equal intervals on the front side of the upper end of the mounting body (1), and a regulating needle valve (6) is installed inside the mounting body (1); A control motor (8) is fixedly mounted on the rear outer side of the mounting body (1), and an output end of the control motor (8) is connected to a motor transmission shaft (9) located in the mounting body (1); A protrusion (12) is integrally fixedly mounted on the rear end outside of the regulating needle valve (6), and the outer side of the protrusion (12) is connected to a positioning block (13) mounted inside the rear end of the mounting body (1); A matching groove (10) adapted to the motor drive shaft (9) is provided inside the rear end of the regulating needle valve (6), and the motor drive shaft (9) is connected to the regulating needle valve (6) in a snap-fit manner via the matching groove (10); A flow collection structure (11) located behind the pressure regulating unit (4) is installed in the middle of the upper end of the installation body (1).

2. A gas flow regulating device for an anesthesia machine according to claim 1, characterized in that: The air inlet channel (3) is connected to the mounting body (1), and the pressure regulating unit (4) is arranged in a one-to-one correspondence with the air inlet channel (3).

3. A gas flow regulating device for an anesthesia machine according to claim 1, characterized in that: A sealing isolation member (5) is provided at the connection between the regulating needle valve (6) and the mounting body (1), and an air outlet pipe (14) is installed in the middle of the inner side of the mounting body (1).

4. A gas flow regulating device for an anesthesia machine according to claim 3, characterized in that: The air outlet pipe (14) is located at the lower side of the front end of the regulating needle valve (6), and the left end of the air outlet pipe (14) is located outside the mounting body (1).

5. The gas flow regulating device for an anesthesia machine according to claim 1, characterized in that: The outer side of the regulating needle valve (6) is connected to a valve body (7) fixedly mounted in the mounting body (1) by screws, and a threaded structure is provided on the outer side of the rear end of the regulating needle valve (6).

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