CN113398398A - Dosage metering and feeding device of anesthesia machine for anesthesia department and control method - Google Patents
Dosage metering and feeding device of anesthesia machine for anesthesia department and control method Download PDFInfo
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- CN113398398A CN113398398A CN202110619630.7A CN202110619630A CN113398398A CN 113398398 A CN113398398 A CN 113398398A CN 202110619630 A CN202110619630 A CN 202110619630A CN 113398398 A CN113398398 A CN 113398398A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/01—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes specially adapted for anaesthetising
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
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Abstract
The invention discloses a dose metering and feeding device of an anesthesia machine for an anesthesia department, which comprises a reverse blocking mechanism, a metering compensation mechanism and a feeding tank for storing anesthetic gas, wherein the reverse blocking mechanism, the metering compensation mechanism and the feeding tank are sequentially connected; the metering compensation mechanism can pump the gas in the supply tank to the reverse blocking mechanism for discharge, and the reverse blocking mechanism can prevent the gas from being sucked back to the metering compensation mechanism; when the gas inhalation amount of the anesthetic of the patient is larger than the gas volume A, the metering compensation mechanism starts the second volume metering air suction to perform gas compensation.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a dose metering and feeding device of an anesthesia machine for an anesthesia department and a control method.
Background
The anesthesia machine sends the anesthetic into the alveolus of the patient through a mechanical loop to form the gas partial pressure of the anesthetic, and after the gas partial pressure is dispersed into blood, the gas partial pressure directly inhibits the central nervous system, thereby generating the effect of general anesthesia. An anesthesia machine belongs to a semi-open type anesthesia device. It mainly comprises an anesthesia evaporation tank, a flowmeter, a folding bellows respirator, a breathing loop, a corrugated pipeline and other parts. The anesthesia machine can make the patient inhale the anesthetic when working, and it sends it in the form of steam or gas into patient's lung through certain device (such as volatilizer), and the blood circulation is gone into through the alveolar to central nervous system and thus produces general anesthesia effect, but, gaseous anesthetic has the problem of difficult metering in use.
On the one hand, gaseous anesthetic is compressed into liquid when storing to save space, just gasify when using, and the transfer of liquid anesthetic and the transfer of gaseous anesthetic all can cause the error in the ration. On the other hand, the theoretical formula for calculating the anesthetic dosage in the prior art is as follows: the consumed inhalation anesthetic dose is fresh air flow (ml) multiplied by the scale of a volatilizer multiplied by inhalation time (min) ÷ steam amount generated by liquid per milliliter of inhalation anesthetic; in actual work, an anaesthetist can adjust the fresh air flow (ml) and the graduations of the volatilizer at any time according to the needed depth of anaesthesia.
Conventionally, as disclosed in patent application No. CN201910196939.2, an inhalation anesthetic meter and a metering method thereof are disclosed, which achieve the purpose of accurately metering the amount of anesthetic to be used by accurately controlling the amount of liquid anesthetic to be drawn and the size of a vaporization space of gaseous anesthetic.
However, the above operation has limitations when the patient coughs, for example, once the patient has a cough while inhaling the gaseous anesthetic, the patient breathes in a short intermittent state, and the amount of the exhaled gas is larger during the cough, so that the amount of the inhaled gas temporarily required by the patient after a severe cough is increased sharply, and the amount of the control of the meter in the prior art is balanced, which cannot meet the requirement of the sharp increase of the temporary inhaled gas, thereby affecting the patient's breathing.
Therefore, the conventional dose metering and supplying device for an anesthesia machine cannot solve the problem that the temporary supply amount of the drug mist is insufficient after the patient coughs.
Disclosure of Invention
The invention aims to provide a dose metering and supplying device of an anesthesia machine for an anesthesia department and a control method thereof, which aim to solve the technical problem that the temporary supply of medicine mist is insufficient after a patient coughs in the prior art.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a dose metering and supplying device of an anesthesia machine for an anesthesia department comprises a reverse blocking mechanism, a metering and compensating mechanism and a supplying tank for storing anesthetic gas, which are sequentially connected; the metering compensation mechanism can pump the gas in the supply tank to the reverse blocking mechanism for discharging, and the reverse blocking mechanism can prevent the gas from being sucked back into the metering compensation mechanism;
the air exhaust of the metering compensation mechanism comprises first volume metering air exhaust and second volume metering air exhaust; when the inhalation amount of anesthetic gas of a patient is not more than the volume A of gas pumped out in the first volume metering pumping, the metering compensation mechanism only starts the first volume metering pumping; and when the gas inhalation amount of the anesthetic of the patient is larger than the gas volume A, the metering compensation mechanism starts the second volume metering pumping.
As a preferred scheme of the invention, the metering compensation mechanism comprises a regulating and controlling meter and a compensation compensator;
along the air exhaust direction, the regulating and controlling meter is connected with the reverse blocking mechanism through an air exhaust channel so as to perform the first volume metering air exhaust; the exhaust channel is communicated with an exhaust seal storage device at the exhaust tail end, one end of the compensation quantity compensator is connected with the regulation and control meter, and the other end of the compensation quantity compensator is communicated with the exhaust seal storage device; when the regulating and controlling meter discharges the anesthetic gas, the compensation quantity compensator can store the anesthetic gas in the regulating and controlling meter;
when the inhalation amount of anesthetic gas of the patient is not more than the gas volume A, the compensation compensator is in a closed state; when the inhalation amount of the anesthetic gas of the patient is larger than the gas volume A, the compensation amount compensator can convey the stored anesthetic gas into the exhaust gas seal.
As a preferable scheme of the present invention, the regulating and controlling meter comprises a packing block hermetically connected to the supply tank, a one-way suction cylinder for sucking gas in the supply tank is installed on the packing block, a movable air plug is connected in the one-way suction cylinder, a multi-stage pressurizing frame is installed on the movable air plug, and the multi-stage pressurizing frame can drive the movable air plug to reciprocate; the movable air plug can pump anesthetic gas from the supply tank into the compensation compensator and can also discharge the gas in the compensation compensator into the reverse blocking mechanism through the air pumping channel, and when the gas is discharged from the compensation compensator, the supply tank and the compensation compensator are in a closed state; the compensation compensator is arranged between the movable air plug and the exhaust sealing device, the outer side wall of the one-way air pumping cylinder is sleeved with an adjusting sleeve, a sealing stepped cavity is arranged in the adjusting sleeve, a pushing sealing column capable of reciprocating is arranged in the sealing stepped cavity, one end, far away from a sealing block, of the pushing sealing column is provided with a return piece connected with the inner wall of the sealing stepped cavity, one end, far away from the sealing block, of the adjusting sleeve is provided with a telescopic cavity column in an inverted U-shaped structure, a fluid medium is arranged in the telescopic cavity column, the top of the pushing sealing column can seal the sealing stepped cavity, one end, far away from the adjusting sleeve, of the telescopic cavity column is connected with a pushing clamping column capable of reciprocating, and the pushing clamping column can limit the height of the movable air plug;
a sliding groove is formed in one end, close to the sealing and spacing block, of the adjusting sleeve, a rotating and ejecting block is arranged at the top of the sealing and spacing block, and the sliding groove is sleeved on the rotating and ejecting block so that the adjusting sleeve can rotate around the center line of the adjusting sleeve; the adjusting sleeve is arranged in the rotating process, and the distance between the pushing sealing column and the outer edge of the top rotating block is gradually increased or decreased, so that the pushing sealing column can reciprocate.
As a preferred scheme of the invention, the multi-stage pressing frame comprises a pressing column in an inverted U-shaped structure, one end of the pressing column is connected with a rotary pressing sleeve, a guide sliding table which can be driven by a driver to rotate along the inner wall of an adjusting sleeve is sleeved in the rotary pressing sleeve, the guide sliding table is in a round table shape, the guide sliding table is in a hollow structure, a thread-shaped groove is formed in the surface of the guide sliding table, and the bottom of the pressing column is embedded in the thread-shaped groove;
a secondary pressure applying block is arranged between the other end of the pressure applying column and the movable air plug, the bottom of the secondary pressure applying block is hinged on the movable air plug, a pushing block is arranged on the inner wall of the top of the one-way air pumping cylinder, and the pushing block can drive the secondary pressure applying block to rotate.
As a preferred scheme of the present invention, a pressure applying and exhausting bag is arranged on an outer wall of the air exhausting channel, the compensation quantity compensator is sleeved outside the pressure applying and exhausting bag, a fixed air column is connected between the compensation quantity compensator and the movable air plug, and an extension air column which is hermetically connected with the reverse blocking mechanism and is communicated with the air exhausting channel is arranged at one end of the compensation quantity compensator away from the movable air plug; when gas is discharged from the unidirectional pumping cylinder, the gas can enter the compensation quantity compensator through the fixed gas column.
As a preferable scheme of the present invention, the compensation compensator includes an air pumping bag column, the fixed air column is provided with a one-way air passage connected to the air pumping bag column and used for injecting air in the one-way air pump into the air pumping bag column, the air pumping bag column is provided with a plurality of equivalent air chambers, an expansion spring is installed in the air pumping bag column, one end of the air pumping bag column, which is far away from the one-way air passage, is provided with an elastic air sealing column, the elastic air sealing column is communicated with the air pumping passage through an air passage, and a delay frame is arranged in the air passage to control the opening and closing of the elastic air sealing column.
As a preferable scheme of the invention, the reverse blocking mechanism comprises a supply pipe communicated with the extension gas column, a temporary reverse blocking disc is sleeved in the supply pipe, a plurality of stepped through grooves with inverted-convex-shaped longitudinal sections are formed in the side wall of the temporary reverse blocking disc, a traction rubber column is movably connected in each stepped through groove, one end of each traction rubber column is provided with a traction sheet for blocking the corresponding stepped through groove, and the other end of each traction rubber column is provided with a trigger ring driven by the traction rubber column.
In a preferred embodiment of the present invention, the minimum diameter of the stepped through groove is not greater than the outer diameter of the traction plate, and the diameter of the traction rubber column is smaller than the minimum diameter of the stepped through groove.
As a preferable scheme of the invention, the delay frame comprises a clamping table connected to one end of the elastic air sealing column, which is far away from the air pumping bag column, and a delay column in an L-shaped structure, one end of the delay column is connected to the elastic air sealing column and used for hooking the elastic air sealing column to prevent air in the air pumping bag column from being discharged, the other end of the delay column penetrates through the air passage and extends into the air pumping passage, a sealing rubber ring connected to the delay column and used for being pushed by the trigger ring is installed on the inner wall of the air pumping passage, a return piece whose end surface is connected to the inner wall of the air passage is connected to the side wall of the delay column, and a pressing rubber column used for pushing the delay column to return is installed on one end of the air passage, which is far away from the elastic air sealing column.
In order to solve the above technical problems, the present invention further provides the following technical solutions:
a control method of a dose metering and supplying device of an anesthesia machine for an anesthesia department comprises the following steps:
s100, extracting anesthetic gas in a supply tank into a reverse blocking mechanism;
s200, conveying the gas to a patient through a reverse blocking mechanism;
in step S100, when the anesthetic gas inhalation volume of the patient is not greater than the gas volume a extracted in the first volume measurement extraction, the measurement compensation mechanism only starts the first volume measurement extraction; when the gas inhalation amount of the anesthetic of the patient is larger than the gas volume A, the metering compensation mechanism starts the second volume metering air suction to perform gas compensation.
Compared with the prior art, the invention has the following beneficial effects:
the invention can realize the adding amount compensation supply action in the supply process through the metering compensation mechanism, and when the anesthetic gas inhalation volume of a patient is not more than the gas volume A pumped in the first volume metering pumping, the metering compensation mechanism only starts the first volume metering pumping; when the gas inhalation amount of the anesthetic of the patient is larger than the gas volume A, the metering compensation mechanism starts the second volume metering air suction to perform gas compensation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a main longitudinal section of the guide slide table according to the embodiment of the present invention;
FIG. 3 is a schematic top view of a vertical cross-sectional structure of a packing block according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a compensation compensator according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a sealed stepped cavity structure according to an embodiment of the present invention;
fig. 6 is a schematic view of a temporary reverse blocking disk structure according to an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-a supply tank; 2-a metering compensation mechanism; 3-blocking reverse mechanism;
21-a regulation meter; 22-compensation compensator; 23-exhaust seal storage; 24-an air extraction channel;
211-spacer blocks; 212-one-way suction cylinder; 213-movable air lock; 214-a multi-stage pressing frame; 215-adjusting sleeve; 216-sealed stepped cavity; 217-pushing the sealing column; 218-a return; 219-telescopic cavity column; 210-pushing out the clamping column; 2111-sliding groove; 2112-top rotating block;
2141-a pressure applying column; 2142-rotating and pressing the sleeve; 2143-a guide ramp; 2144-secondary pressing; 2145-a pushing block;
221-air extraction bag column; 222-one-way airway; 223-equivalent air cavity; 224-elastic gas-tight column; 225-airway; 226-delay frame; 227-expansion spring;
2261-a clamping station; 2262-time delay column; 2263-sealant ring; 2264-return; 2265-pressing the glue columns;
231-fixed gas column; 232-pressure applying and air exhausting bag; 233-extended gas column;
31-a supply tube; 32-temporary reverse blocking disk; 33-step through groove; 34-pulling the glue column; 35-a traction sheet; 36-trigger ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the invention provides a dose metering and supplying device of an anesthesia machine for an anesthesia department, which comprises a reverse blocking mechanism 3, a metering and compensating mechanism 2 and a supplying tank 1 for storing anesthetic gas, which are connected in sequence; the metering compensation mechanism 2 can pump the gas in the supply tank 1 out to the reverse blocking mechanism 3 for discharging, and the reverse blocking mechanism 3 can prevent the gas from being sucked back into the metering compensation mechanism 2;
the air extraction of the metering compensation mechanism 2 comprises first volume metering air extraction and second volume metering air extraction; when the inhalation volume of anesthetic gas of a patient is not more than the volume A of gas pumped in the first volume metering pumping, the metering compensation mechanism 2 only starts the first volume metering pumping; when the patient's anesthetic gas intake is greater than the gas volume a, the metering compensation mechanism 2 initiates a second volume metering pump down.
The device can realize the adding amount compensation supply action in the supply process through the metering compensation mechanism 2, and when the anesthetic gas inhalation volume of a patient is not more than the gas volume A pumped in the first volume metering pumping, the metering compensation mechanism 2 only starts the first volume metering pumping; when the gas inhalation amount of the anesthetic of the patient is larger than the gas volume A, the metering compensation mechanism 2 starts the second volume metering air suction to perform gas compensation.
In this embodiment, the volume of gas a is the volume of normal inhalation of the patient in daily life, wherein the first volume measurement is pumped with a gas content as much as possible equal to or slightly greater than the volume of normal inhalation of the patient (so configured that the pumped gas is not wasted in a large amount if needed by the patient), and the second volume measurement is temporarily compensated with a gas, and the compensation is performed only in the case of severe cough of the patient, and the second volume measurement is optionally pumped with a plurality of small volumes of equal volume of gas (the small volume gas content is smaller than the volume of normal inhalation of the patient) in order to avoid the situation that a large amount of gas is leaked or wasted during compensation.
As shown in fig. 1 and 4, the metering compensation mechanism 2 includes a regulating meter 21 and a compensation quantity compensator 22;
along the air extraction direction, the regulation and control meter 21 is connected with the reverse blocking mechanism 3 through an air extraction channel 24 so as to carry out first volume measurement air extraction; the exhaust channel 24 is communicated with an exhaust seal storage 23 at the exhaust tail end, one end of the compensation quantity compensator 22 is connected with the regulation and control meter 21, and the other end is communicated with the exhaust seal storage 23; when the regulation and control meter 21 discharges the anesthetic gas, the compensation compensator 22 can store the anesthetic gas in the regulation and control meter 21;
when the patient's anesthetic gas inhalation is not greater than the gas volume a, the compensation volume compensator 22 is in a closed state; when the patient's anesthetic gas inhalation volume is greater than the gas volume a, the offset compensator 22 can deliver the stored anesthetic gas into the exhaust lock 23.
In order to realize the adding amount compensation supply action in the supply process, when the adding amount compensation supply action is implemented, anesthetic gas in the supply tank 1 can be extracted through the regulation and control meter 21, the extracted gas is metered to obtain supply gas, the supply gas extracted by the regulation and control meter 21 is guided through the exhaust seal 23 to enter the reverse blocking mechanism 3 through the exhaust channel 24 and be exhausted to carry out gas supply action, and when the inhalation amount of the anesthetic gas of a patient is not more than the gas volume A, the compensation amount compensation device 22 is in a closed state; when the patient's anesthetic gas inhalation volume is greater than the gas volume a, the offset compensator 22 can deliver the stored anesthetic gas into the exhaust lock 23.
As shown in fig. 1, 2, 3, 4 and 5, the regulating gauge 21 includes a packing block 211 hermetically connected to the supply tank 1, a one-way suction cylinder 212 installed on the packing block 211 for sucking gas in the supply tank 1, a movable air plug 213 connected to the one-way suction cylinder 212, a multi-stage pressurizing frame 214 installed on the movable air plug 213, the multi-stage pressurizing frame 214 being capable of driving the movable air plug 213 to reciprocate; the movable gas plug 213 can pump the anesthetic gas from the supply tank 1 into the compensation amount compensator 22, and can also discharge the gas in the compensation amount compensator 22 into the reverse blocking mechanism 3 through the pumping channel 24, and when the gas is discharged from the compensation amount compensator 22, the space between the supply tank 1 and the compensation amount compensator 22 is closed (by this arrangement, the compensation amount compensator 22 is not affected by the supply tank 1 when exhausting gas);
the compensation quantity compensator 22 is provided to the movable air lock 213, between the exhaust seal reservoirs 23, the outer side wall of the one-way suction tube 212 is sleeved with an adjusting sleeve 215, a sealing stepped cavity 216 is arranged in the adjusting sleeve 215, a pushing seal column 217 capable of reciprocating is arranged in the sealing stepped cavity 216, one end, far away from the sealing block 211, of the pushing seal column 217 is provided with a return element 218 connected with the inner wall of the sealing stepped cavity 216, one end, far away from the sealing block 211, of the adjusting sleeve 215 is provided with a telescopic cavity column 219 in an inverted U-shaped structure, a fluid medium (more fluid media are selected, such as oil, water or gas, and the like, the telescopic cavity column 219 is similar to a double-headed piston filled with the medium inside), the top of the pushing seal column 217 can seal the sealing stepped cavity 216, one end, far away from the adjusting sleeve 215, of the telescopic cavity column 219 is connected with a pushing-out clamp column 2110 capable of reciprocating, and the pushing-out clamp column 2110 can limit the height of the movable air plug 213;
a sliding groove 2111 is arranged inside one end of the adjusting sleeve 215 close to the packing block 211, a rotating block 2112 is arranged at the top of the packing block 211, and the sliding groove 2111 is sleeved on the rotating block 2112 so that the adjusting sleeve 215 rotates around the center line of the adjusting sleeve; during rotation of adjustment sleeve 215, the distance between push seal 217 and the bottom edge of top rotation block 2112 is gradually increased or decreased to allow push seal 217 to move up and down in a reciprocating manner.
In this embodiment, the adjusting sleeve 215 and the guiding sliding table 2143 are driven by two drivers (e.g., motors), so that the adjusting sleeve 215 and the guiding sliding table 2143 can work without mutual influence, and when the two drivers respectively drive the adjusting sleeve 215 and the guiding sliding table 2143 to move, the two drivers should control the rotation angle and direction thereof, so as to be capable of reciprocating (i.e., taking fig. 3 as an example, clockwise rotation should be performed immediately after the counterclockwise rotation is completed).
In this embodiment, the specific structure of the turning block 2112 is arranged along the inner wall of the sliding groove 2111, and the turning block 2112 is installed on the surface of the block 211, and the height of the turning block 2112 is set in a counterclockwise linear increasing trend, that is, taking fig. 3 as an example, the number of the turning blocks 2112 is the same as the number of the telescopic cavity columns 219, and the height of the end of the turning block 2112 close to the telescopic cavity columns 219 is smaller than the height of the end of the turning block 2112 away from the telescopic cavity columns 219, only by such setting, during the movement of the adjusting sleeve 215 with the pushing block 217, the pushing block 217 will slide along the telescopic cavity columns 219 with the raised height and be pushed by the telescopic cavity columns 219 to rise.
The regulating and controlling meter 21 is mainly used for measuring the air extraction amount when the compensation compensator 22 is in a closed state, specifically, the content of the gas extracted in the first volume measurement air extraction can be regulated and controlled by the regulating and controlling meter 21, and the specific implementation is that.
If a pumping action is required, the maximum pumping capacity of the one-way pump cylinder 212, i.e. the height limit position of the movable air plug 213 by the push-out clamp 2110 in the sealed stepped cavity 216, needs to be determined.
Height limitation: the adjusting sleeve 215 is driven by a driver (e.g., a motor) to rotate around the one-way pump 212, at this time, the rotating one-way pump 212 drives the push seal bars 217 to slide along the rotation block 2112, and since the height value of the rotation block 2112 is set in a linear increasing trend in a counterclockwise direction (taking fig. 4 as an example, two rotation blocks 2112 should be set, and the directions of the two rotation blocks 2112 when pushing the push seal bars 217 to move are fixed, that is, the two push seal bars 217 rise or fall at the same time), the push seal bars 217 gradually rise along the surface of the rotation block 2112, and when the push seal bars 217 rise, the push return members 218 are pushed to provide power for subsequent resetting, and the rising push seal bars 217 push the flowing medium in the seal ladder cavity 216 into the telescopic cavity bars 219.
The increased amount of the flowing medium in the telescopic cavity column 219 applies a pushing force to the end of the telescopic cavity column 219 away from the sealing stepped cavity 216, so that the push-out latch 2110 is pushed to slide downwards gradually (a rubber block or a spring may be installed between the push-out latch 2110 and the telescopic cavity column 219 to prevent the push-out latch 2110 from moving freely), thereby achieving the purpose of adjusting the height, wherein the height adjustment is mainly directly limited by the top-rotating block 2112, the higher the top-rotating block 2112, the more the push-out latch 2110 slides downwards, the less the anesthetic gas is pumped out, and vice versa.
After the height limitation is completed, the metering action can be implemented: the multi-stage pressurizing frame 214 is driven by the driver to move, the movable multi-stage pressurizing frame 214 directly pulls the movable air plug 213 to move along the inner wall of the one-way pumping cylinder 212, when the movable air plug 213 is lifted along the one-way pumping cylinder 212, the gas in the supply tank 1 is directly pumped into the one-way pumping cylinder 212 until the movable air plug 213 contacts the push-out clamping column 2110, the gas metering at the position is controlled by the push-out clamping column 2110, and if the gas needs to be discharged, the multi-stage pressurizing frame 214 (specifically, the rotating guide sliding table 2143) only needs to be rotated in the opposite direction.
It should be noted that, in the one-way component of the present invention, the positions of the air ports (such as the inlet of the air exhaust channel 24, the air inlet of the one-way air exhaust cylinder 212 and the one-way air passage 222) are all installed with a through hole block for realizing the one-way control of air, taking fig. 4 as an example, the connection between the sealing block 211 and the one-way air exhaust cylinder 212 is installed with a through hole block, the surface of one side of the through hole block away from the sealing block 211 is installed with a sealing sheet for sealing the column through hole block, when the movable air plug 213 performs the air exhaust action (i.e. the air in the supply tank 1 is pumped into the one-way air exhaust cylinder 212), the air in the supply tank 1 will directly push against the sealing sheet and enter the one-way air exhaust cylinder 212 from the through hole block, and when performing the air exhaust action, the air will press the sealing sheet to be exhausted from the connection between the movable air plug 213 and the fixed air cylinder 231, and in order to make the air flow out with a certain speed, therefore, and a plugging sheet for plugging the column through hole block is also arranged on the surface of one side of the through hole block, which is far away from the one-way suction cylinder 212, so that the through hole block at the position can only exhaust air but cannot exhaust air.
The components for realizing gas control in the invention can be not only in the states shown in fig. 1 and 4, but also can be electromagnetic valves provided with timers, and the specific application is set according to actual requirements.
As shown in fig. 1, 2 and 4, the multi-stage pressing frame 214 includes a pressing post 2141 having an inverted u-shaped structure, one end of the pressing post 2141 is connected to a rotary pressing sleeve 2142, a guide sliding table 2143 which can be driven by a driver to rotate along the inner wall of the adjusting sleeve 215 is sleeved inside the rotary pressing sleeve 2142, the guide sliding table 2143 has a circular table shape, the guide sliding table 2143 has a hollow structure, the surface of the guide sliding table 2143 is provided with a thread-shaped groove (the specific structure of the groove is not unique, but can be an arc-shaped structure, as long as the purpose of guiding through the groove can be achieved), and the bottom of the pressing post 2141 is embedded in the thread-shaped groove;
a secondary pressure applying block 2144 is arranged between the other end of the pressure applying column 2141 and the movable air plug 213, the bottom of the secondary pressure applying block 2144 is hinged to the movable air plug 213 (a torsion spring can be arranged in a hinged point at the position to enable the secondary pressure applying block 2144 to automatically reset, thereby avoiding the phenomenon that the secondary pressure applying block 2144 is always tightly attached to the compensation compensator 22, and the pushing block 2145 is also set to be in a state shown in fig. 4, so that the secondary pressure applying block 2144 is not blocked by the pushing block 2145 when being driven to rise), the pushing block 2145 is arranged on the inner wall of the top of the one-way suction tube 212, and the pushing block 2145 can drive the secondary pressure applying block 2144 to rotate.
The multi-stage pressurizing frame 214 is mainly used for driving the movable air plug 213 to move along the inner wall of the one-way pumping cylinder 212, and during the implementation of the multi-stage pressurizing frame, in order to realize the pumping and exhausting action of gas, the situation that gas is remained in the fixed gas column 231 during the exhausting process can not occur, and then the multi-stage pressurizing frame can directly drive the guide sliding table 2143 to slide and rotate along the inner wall of the one-way pumping cylinder 212 through a driver, and the guide sliding table 2143 can guide the rotary pressurizing sleeve 2142 to drive the pressurizing cylinder 2141 to move up and down through the thread-shaped groove on the side wall of the guide sliding table 2143 in the rotating process.
In this embodiment, the specific structure of the rotary pressing sleeve 2142 is as shown in fig. 2, and includes a ring sleeve and a pillar embedded in a threaded groove, and the depth of the threaded groove gradually increases from top to bottom, so that the problem that the pillar work is easily affected by the depth of the groove due to the circular truncated cone shape of the guide sliding table 2143 can be avoided.
In order to prevent a part of gas from remaining in the one-way pumping cylinder 212 during the deflation process, secondary pressurization can be performed through the secondary pressurization block 2144 on the pressurization column 2141, that is, when the pressurization column 2141 descends to contact the pushing block 2145, the secondary pressurization block 2144 is directly pushed by the pushing block 2145 to move towards the exhaust seal device 23, so that the exhaust seal device 23 performs secondary exhaust.
In this embodiment, the secondary pressing block 2144 is rotatably connected to the pressing post 2141 by a torsion spring, so that the secondary pressing block 2144 can be quickly reset.
As shown in fig. 1 and 4, a pressure applying and exhausting bag 232 is disposed on an outer wall of the air extracting channel 24, the compensation quantity compensator 22 is sleeved outside the pressure applying and exhausting bag 232, a fixed air column 231 is connected between the compensation quantity compensator 22 and the movable air plug 213, and an extended air column 233 which is hermetically connected with the reverse blocking mechanism 3 and is communicated with the air extracting channel 24 is disposed at one end of the compensation quantity compensator 22 away from the movable air plug 213 (the extended air column 233 is present to ensure the sealing performance when the fixed air column 231 moves up and down); when the gas is exhausted from the one-way pump 212, the gas can enter the compensation amount compensator 22 through the fixed gas column 231.
In order to realize the secondary pressurization, the fixed air column 231 may directly guide the gas to be discharged until the movable air plug 213 slides along the one-way pumping cylinder 212 until the movable air plug cannot move any further, and the secondary pressurization block 2144, when moving, may exert a pressure on the pressurization and exhaust bag 232, and then the pressurization and exhaust bag 232 moves towards the inner side of the fixed air column 231 so that the gas in the fixed air column 231 is discharged for the second time.
As shown in fig. 1, 3 and 4, the compensation compensator 22 includes an air pumping bag column 221, a one-way air passage 222 connected to the air pumping bag column 221 and used for injecting air from the unidirectional air pumping cylinder 212 into the air pumping bag column 221 is disposed in the fixed air column 231, a plurality of equal air chambers 223 are disposed in the air pumping bag column 221, an expansion spring 227 is disposed in the air pumping bag column 221, an elastic air sealing column 224 is disposed at one end of the air pumping bag column 221 away from the one-way air passage 222, the elastic air sealing column 224 is communicated with the air pumping channel 24 through an air passage 225, and a delay frame 226 is disposed in the air passage 225 to control the opening and closing of the elastic air sealing column 224.
In order to realize temporary gas compensation, in the implementation, when the first air exhaust or the previous air exhaust bag column 221 is exhausted, the expanding spring 227 is gradually expanded (the expanding spring 227 is always in a compressed state before being expanded, that is, the air exhaust bag column 221 is in an initial state of a compressed state, and the specific structure of the expanding spring 227 is as shown in fig. 4, so that the air exhaust amount of the air exhaust bag column 221 can be sufficiently ensured), then the air exhaust bag column 221 is expanded, and a unidirectional air exhaust action is performed through the unidirectional air passage 222 (that is, a through hole block and a blocking sheet are also installed at the position), then, the plurality of equivalent air chambers 223 are gradually filled with gas, when the secondary pressing block 2144 presses, if the delay frame 226 is not triggered by the reverse blocking mechanism 3, the gas cannot be discharged, if the delay frame 226 is triggered, and then the plurality of equivalent air chambers 223 are pushed open against the elastic air sealing column 224 by the secondary pressing block 2144, the specific structure of the elastic gas sealing column 224 is shown in fig. 4, a through hole is formed in the inner wall of the fixed gas column 231 corresponding to the elastic gas sealing column 224, and once the gas pushes the elastic gas sealing column 224 (composed of a spring and a rubber column) to slide along the air passage 225, the gas in the equivalent gas chambers 223 is simultaneously discharged through the through hole to perform a compensation action.
As shown in fig. 1 and 6, the reverse blocking mechanism 3 includes a supply pipe 31 communicated with an extension gas column 233, a temporary reverse blocking disc 32 is sleeved in the supply pipe 31, a plurality of stepped through grooves 33 with inverted-convex-shaped longitudinal sections are formed in the side wall of the temporary reverse blocking disc 32, a traction rubber column 34 is movably connected in the stepped through groove 33, a traction sheet 35 for blocking the stepped through groove 33 is installed at one end of the traction rubber column 34, and a trigger ring 36 driven by the traction rubber column 34 is installed at the other end of the traction rubber column 34.
The minimum diameter of the stepped through groove 33 is not larger than the outer diameter of the traction sheet 35, and the diameter of the traction rubber column 34 is smaller than the minimum diameter of the stepped through groove 33.
As shown in fig. 1 and 4, the delay frame 226 includes a clamping platform 2261 connected to one end of the elastic air sealing column 224 far away from the air pumping cell column 221 and a delay column 2262 in an "L" shape, one end of the delay column 2262 is connected to the elastic air sealing column 224 and is used for hooking the elastic air sealing column 224 to prevent air in the air pumping cell column 221 from being discharged, and the other end of the delay column 2262 penetrates through the air duct 225 and extends into the air pumping channel 24, a sealing rubber ring 2263 connected to the delay column 2262 and used for being pushed by the trigger ring 36 is installed on the inner wall of the air pumping channel 24, a return piece 2264 whose end face is connected to the inner wall of the air duct 225 is connected to the side wall of the delay column 2262, and a pressing rubber column 2265 used for pushing the delay column 2262 to return is installed on one end of the air duct 225 far away from the elastic air sealing column 224.
In order to realize the action of triggering the delay frame 226, when it is implemented, under normal conditions, the gas is gradually exhausted through the stepped through groove 33, and the temporary check disk 32 is fixed on the inner wall of the supply pipe 31, while the fixed gas column 231 can move with the triggering ring 36 and the pulling rubber column 34 until the pulling rubber column 34 drives the pulling sheet 35 to move until embedding into the stepped through groove 33, so that the surface can generate the reverse flow phenomenon (here, the first volume measurement air suction is sprayed out), and once the patient strongly sucks the force, the pulling rubber column 34 is very easily sucked, so that the pulling rubber column pulls the triggering ring 36 to move to slide along the sealing rubber ring 2263 and contact the bulge on the sealing rubber ring 2263, when the bulge on the sealing rubber ring 2263 is pressed down, the delay column 2262 moves and releases the clamping table 2261 on the elastic air seal column 224, and then the air deflation action can be performed at the elastic air seal column 224 (here, the first volume measurement air suction is sprayed out, and then a second volume is pumped out again), and the delay pin 2262 will pull the return member 2264 (optionally a spring) when moving, so that the delay pin 2262 has the resetting capability, and the pressing of the rubber pin 2265 can play a safety role to push the delay pin 2262 to reset.
The invention also provides a control method of the dose metering and supplying device of the anesthesia machine for the anesthesia department, which comprises the following steps:
s100, extracting anesthetic gas in a supply tank into a reverse blocking mechanism;
s200, conveying the gas to a patient through a reverse blocking mechanism;
in step S100, when the anesthetic gas inhalation volume of the patient is not greater than the gas volume a extracted in the first volumetric pumping, the metering compensation mechanism 2 only starts the first volumetric pumping; when the gas inhalation amount of the anesthetic of the patient is larger than the gas volume A, the metering compensation mechanism 2 starts the second volume metering air suction to perform gas compensation.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (10)
1. The utility model provides a dose metering feeding device of anesthesia machine for department of anesthesia which characterized in that: comprises a reverse blocking mechanism (3), a metering compensation mechanism (2) and a supply tank (1) for storing anesthetic gas which are connected in sequence; the metering compensation mechanism (2) can pump out the gas in the supply tank (1) to the reverse blocking mechanism (3) for discharging, and the reverse blocking mechanism (3) can prevent the gas from being sucked back into the metering compensation mechanism (2);
the air extraction of the metering compensation mechanism (2) comprises first volume metering air extraction and second volume metering air extraction; when the inhalation amount of anesthetic gas of a patient is not more than the volume A of gas pumped in the first volume metering pumping, the metering compensation mechanism (2) only starts the first volume metering pumping; when the inhalation amount of the anesthetic gas of the patient is larger than the gas volume A, the metering compensation mechanism (2) starts the second volume metering air exhaust.
2. The device for measuring and supplying a dose of an anesthesia machine for an anesthesia department as set forth in claim 1, wherein: the metering compensation mechanism (2) comprises a regulating meter (21) and a compensation compensator (22);
along the air extraction direction, the regulating and controlling meter (21) is connected with the reverse blocking mechanism (3) through an air extraction channel (24) so as to carry out the first volume measurement air extraction; the exhaust channel (24) is communicated with an exhaust seal storage (23) at the exhaust tail end, one end of the compensation quantity compensator (22) is connected with the regulation and control meter (21), and the other end of the compensation quantity compensator is communicated with the exhaust seal storage (23); the compensation quantity compensator (22) is capable of storing the anesthetic gas from the regulating meter (21) when the regulating meter (21) is discharging the anesthetic gas;
when the patient's anesthetic gas inhalation is not greater than the gas volume A, the compensation volume compensator (22) is in a closed state; when the patient's anesthetic gas inhalation volume is greater than the gas volume A, the compensation volume compensator (22) is capable of delivering the stored anesthetic gas into the exhaust trap (23).
3. The device for measuring and supplying a dose of an anesthesia machine for an anesthesia department as set forth in claim 2, wherein: the regulation and control meter (21) comprises a sealing and isolating block (211) hermetically connected with the supply tank (1), a one-way air pumping cylinder (212) used for pumping air in the supply tank (1) is installed on the sealing and isolating block (211), a movable air plug (213) is connected in the one-way air pumping cylinder (212), a multi-stage pressure applying frame (214) is installed on the movable air plug (213), and the multi-stage pressure applying frame (214) can drive the movable air plug (213) to reciprocate; the movable air plug (213) can pump anesthetic gas from the supply tank (1) into the compensation compensator (22), can also discharge the gas in the compensation compensator (22) into the reverse blocking mechanism (3) through the air pumping channel (24), and when the gas is discharged from the compensation compensator (22), the space between the supply tank (1) and the compensation compensator (22) is in a closed state; the compensation compensator (22) is arranged between the movable air plug (213) and the exhaust seal device (23), the outer side wall of the one-way air pump cylinder (212) is sleeved with an adjusting sleeve (215), a sealed stepped cavity (216) is arranged in the adjusting sleeve (215), a pushing seal column (217) capable of reciprocating is arranged in the sealed stepped cavity (216), one end, far away from the seal spacer block (211), of the pushing seal column (217) is provided with a return piece (218) connected with the inner wall of the sealed stepped cavity (216), one end, far away from the seal spacer block (211), of the adjusting sleeve (215) is provided with a telescopic cavity column (219) in an inverted U-shaped structure, a fluid medium is arranged in the telescopic cavity column (219), the top of the pushing seal column (217) can seal the sealed stepped cavity (216), one end, far away from the adjusting sleeve (215), of the telescopic cavity column (219) is connected with a pushing clamp column (2110) capable of reciprocating, the push-out clamping column (2110) can limit the height of the movable air plug (213);
a sliding groove (2111) is formed in one end, close to the sealing block (211), of the adjusting sleeve (215), a rotating and ejecting block (2112) is arranged at the top of the sealing block (211), and the sliding groove (2111) is sleeved on the rotating and ejecting block (2112) to enable the adjusting sleeve (215) to rotate around the center line of the adjusting sleeve; during the rotation of the adjusting sleeve (215), the distance between the pushing sealing column (217) and the outer edge of the top rotating block (2112) is gradually increased or decreased, so that the pushing sealing column (217) can reciprocate.
4. The device for measuring and supplying a dose of an anesthesia machine for an anesthesia department according to claim 3, wherein: the multi-stage pressing frame (214) comprises pressing columns (2141) in an inverted U-shaped structure, one end of each pressing column (2141) is connected with a rotary pressing sleeve (2142), a guide sliding table (2143) which can be driven by a driver to rotate along the inner wall of the adjusting sleeve (215) is sleeved inside the rotary pressing sleeve (2142), the guide sliding table 2143 is in a circular table shape, the guide sliding table (2143) is in a hollow structure, a thread-shaped groove is formed in the surface of the guide sliding table (2143), and the bottoms of the pressing columns (2141) are embedded in the thread-shaped groove;
a secondary pressing block (2144) is arranged between the other end of the pressing column (2141) and the movable air plug (213), the bottom of the secondary pressing block (2144) is hinged to the movable air plug (213), a pushing block (2145) is arranged on the inner wall of the top of the one-way air pumping cylinder (212), and the pushing block (2145) can drive the secondary pressing block (2144) to rotate.
5. The device for measuring and supplying a dose of an anesthesia machine for an anesthesia department according to claim 3, wherein: a pressure applying and exhausting bag (232) is hermetically arranged on the outer wall of the air extracting channel (24), the compensation quantity compensator (22) is sleeved outside the pressure applying and exhausting bag (232), a fixed air column (231) is connected between the compensation quantity compensator (22) and the movable air plug (213), and an extension air column (233) which is hermetically connected with the reverse blocking mechanism (3) and communicated with the air extracting channel (24) is arranged at one end, far away from the movable air plug (213), of the compensation quantity compensator (22); when gas is exhausted from the one-way suction cylinder (212), the gas can enter the compensation compensator (22) through the fixed gas column (231).
6. The device for measuring and supplying a dose of an anesthesia machine for an anesthesia department as set forth in claim 5, wherein: the compensation quantity compensator (22) comprises an air pumping bag column (221), a unidirectional air passage (222) which is connected with the air pumping bag column (221) and used for injecting air in a unidirectional air pumping cylinder (212) into the air pumping bag column (221) is arranged in the fixed air column (231), a plurality of equivalent air cavities (223) are arranged in the air pumping bag column (221), an expansion spring (227) is arranged in the air pumping bag column (221), an elastic air sealing column (224) is arranged at one end, far away from the unidirectional air passage (222), of the air pumping bag column (221), the elastic air sealing column (224) is communicated with the air pumping passage (24) through an air passage (225), and a time delay frame (226) is arranged in the air passage (225) to control the opening and closing of the elastic air sealing column (224).
7. The dose metering and feeding device of the anesthesia machine for the anesthesia department according to claim 5, wherein the reverse blocking mechanism (3) comprises a feeding pipe (31) communicated with the extension air column (233), a temporary reverse blocking disc (32) is sleeved in the feeding pipe (31), a plurality of stepped through grooves (33) with inverted convex-shaped longitudinal sections are formed in the side wall of the temporary reverse blocking disc (32), a traction rubber column (34) is movably connected in the stepped through grooves (33), a traction sheet (35) used for blocking the stepped through grooves (33) is installed at one end of the traction rubber column (34), and a trigger ring (36) driven by the traction rubber column (34) is installed at the other end of the traction rubber column (34).
8. The dose metering and feeding device of an anesthesia machine for anesthesia department of claim 7, wherein the minimum diameter of said stepped through groove (33) is not larger than the outer diameter of the pulling piece (35), and the diameter of said pulling glue column (34) is smaller than the minimum diameter of the stepped through groove (33).
9. The device for measuring and supplying the amount of drug of the anesthesia machine used in the department of anesthesia as claimed in claim 6, wherein the delay frame (226) comprises a clamping platform (2261) connected to one end of the elastic air-sealing column (224) far away from the air-pumping bag column (221) and a delay column (2262) in an "L" type structure, one end of the delay column (2262) is connected to the elastic air-sealing column (224) and is used for hooking the elastic air-sealing column (224) to prevent the air in the air-pumping bag column (221) from being discharged, the other end of the delay column (2262) penetrates through the air duct (225) and extends into the air-pumping channel (24), the inner wall of the air-pumping channel (24) is provided with a sealing rubber ring (2263) connected to the delay column (2262) and is pushed by the trigger ring (36), the side wall of the delay column (2262) is connected to a recovery piece (2264) whose end face is connected to the inner wall of the air duct (225), one end of the air passage (225) far away from the elastic air sealing column (224) is provided with a pressing rubber column (2265) for pushing the delay column (2262) to reset.
10. A control method of a dose metering device of an anesthesia machine for anesthesia department according to any one of claims 1 to 9, characterized by comprising the steps of:
s100, extracting anesthetic gas in a supply tank into a reverse blocking mechanism;
s200, conveying the gas to a patient through a reverse blocking mechanism;
in step S100, when the anesthetic gas inhalation volume of the patient is not greater than the gas volume a extracted in the first volumetric pumping, the metering compensation mechanism (2) starts only the first volumetric pumping; and when the gas inhalation amount of the anesthetic of the patient is larger than the gas volume A, the metering compensation mechanism (2) starts the second volume metering air suction to perform gas compensation.
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Cited By (1)
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| CN113893772A (en) * | 2021-11-08 | 2022-01-07 | 理纯(上海)洁净技术有限公司 | Multi-element gas mixing proportioning device capable of regulating gas mixing proportion |
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