CN115337494A - Portable medical infusion box and infusion control method - Google Patents
Portable medical infusion box and infusion control method Download PDFInfo
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- CN115337494A CN115337494A CN202210835519.6A CN202210835519A CN115337494A CN 115337494 A CN115337494 A CN 115337494A CN 202210835519 A CN202210835519 A CN 202210835519A CN 115337494 A CN115337494 A CN 115337494A
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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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
- A61M5/148—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags
- A61M5/1483—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags using flexible bags externally pressurised by fluid pressure
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
- A61M5/16813—Flow controllers by controlling the degree of opening of the flow line
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
-
- 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/44—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media
- A61M5/445—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media the media being heated in the reservoir, e.g. warming bloodbags
-
- 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
- A61M2205/18—General characteristics of the apparatus with alarm
-
- 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
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
-
- 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
- A61M2209/00—Ancillary equipment
- A61M2209/08—Supports for equipment
- A61M2209/088—Supports for equipment on the body
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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a portable medical infusion box and an infusion control method. The box body is divided into two layers, wherein the first layer of the box body is an infusion working area, and an air pump, an air bag, an infusion bag pressurizing plate, a control circuit and the like are arranged inside the box body; the box body comprises a storage and heat preservation area, a heating part and a temperature sensor are arranged on the storage and heat preservation area, and the storage and heat preservation area is used for heating stored medicines; a flow controller is arranged on the infusion tube; a flow regulating switch is set by adopting a dynamic linearization method based on a compact form in model-free adaptive control, so that the problem of flow control is solved; an infusion bag pressurizing plate is arranged on the air bag, and a control circuit is connected with the air pump to control the start and stop of the air pump. The medical infusion box is convenient for patients and doctors to carry and use; the flow can be adjusted; also can store the medicine simultaneously to can heat up and keep warm to store according to the demand, can realize taking out the medicine in advance, so that improve the efficiency of changing dressings.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a portable medical infusion box.
Background
When medical staff transfuses a patient, a liquid medicine bottle containing liquid medicine is generally filled into a net cover, or the opening of the liquid medicine bag is hung downwards on a bracket placed beside a bed or a seat, so that the liquid medicine bag is used for transfusion when the patient lies or sits motionless. If a patient needs to go to a washroom or other departments for examination in the middle of the infusion process, the patient often needs to lift the liquid medicine bottle or bag to a high position by using the other hand without inserting a needle tube, or the other hand is taken over by accompanying family members, so that the patient is tired very much after lifting the bottle, and the patient is more inconvenient in the field or in the occasions with fluidity such as emergencies. In addition, when a patient has severe conditions such as shock, certain requirements are also set for the fluid infusion speed, so that the selection of different fluid infusion speeds for different conditions is also important. Meanwhile, the existing transfusion box has no place convenient for storing medicines, so that whether to change the medicine in time becomes a big problem when medical staff are busy, and the problem to be solved is to improve the medicine changing efficiency.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problem of providing a portable medical infusion box aiming at the defects of the prior art. Not only is convenient to move. Simultaneously, the medical nursing infusion apparatus has the functions of storing articles and medicines, is convenient for medical workers to store medicines, can heat and preserve heat according to requirements, and can realize taking out the medicines in advance and timely infusion.
(II) technical scheme
Portable medical transfusion box, including box body and lid, the box body divide into infusion workspace and medicine storage area to and the infusion bag of using with portable medical transfusion box cooperation.
The box cover of the portable medical infusion box is characterized by comprising an LCD display screen, a buzzer, a pressure sensor, a heating component and a magnetic suction strip. The LCD display screen is arranged on the panel on the outer side of the box cover; the buzzer is arranged on the panel on the side surface of the box cover; the pressure sensor is arranged on the inner side of the box cover and is positioned above the pressurizing plate of the infusion bag; the heating component comprises an electric heating wire or an electric heating plate and is arranged on the inner side of the box cover; the magnetic suction strips are three and are arranged on the inner side of the box cover.
Furthermore, the box cover comprises a power switch and a multi-gear flow control switch. An infusion tube outlet is arranged on the box body; the power switch and the multi-gear flow control switch are arranged on the outer side of the box body; the side wall of the box body is provided with an air outlet; the upper part of the box body is provided with a lifting flap.
Furthermore, the box body also comprises an air pump, an air bag, an infusion bag pressurizing plate, a control circuit and a power supply. The air pump is connected with the air bag through a one-way valve; the air bag is arranged in the box body, a pressure reducing valve is further arranged on the air bag, and the infusion bag is arranged above the air bag; the infusion bag pressurizing plate is placed above the infusion bag, is made of elastic materials and is arc-shaped in side view; when the infusion bag pressurizing plate is used, the arc-shaped top of the infusion bag pressurizing plate is contacted with the inner wall of the box cover, and the middle part of the infusion bag pressurizing plate is contacted with the pressure sensor; the output end of the control circuit is respectively connected with the air pump and the flow controller, and the flow speed during infusion are controlled by controlling the flow controller.
Further, the medicine storage area comprises a first storage area and a second storage area. The left side and the right side of the first storage area and the second storage area are respectively provided with two gaps, the gaps on the left side and the right side of the first storage area are used for placing infusion heating pastes, and meanwhile, a heating part and a temperature sensor are arranged in the first storage area, so that the real-time temperature monitoring of the medicine can be realized, and the medicine can be continuously heated under special conditions; phenolic resin heat-insulating layers are arranged in gaps on the left side and the right side of the second storage area and are used for heat-insulating storage of the medicines.
The portable medical infusion box is matched with an infusion bag for use, the infusion bag is connected with an infusion tube, and the flow controller and the flow sensor are arranged on the infusion tube.
Furthermore, the flow controller also comprises a pump shell, a rotor, a roller, a rotating shaft, a U-shaped pipe, a screw and a rolling shaft. An elastic U-shaped pipe is arranged in the pump shell. When the medicine dispensing machine works, the rotating shaft is driven by the speed regulating motor, and when the medicine dispensing machine works, the rotor rotates, the U-shaped pipe moves along with the rotor, and medicines are extruded and pushed in sections. The purpose of controlling the flow rate is achieved by controlling different rotating speeds.
The invention also provides an infusion control method, which specifically comprises the following steps:
the flow controller (20) in the portable medical infusion box has the following relation between a motor and flow:
in the formula, M t Is the motor torque; q is the flow rate; alpha represents the guide vane opening; n is the rotating speed of the motor, and n is less than 3000 rpm; h is the head.
When the motor starts to work
Wherein, delta alpha represents the deviation value of the opening degree of the guide vane, delta n represents the deviation value of the rotating speed, and delta H represents the deviation of the water head.
According to the above formula can obtain
The flow controller (20) in the portable medical infusion box is characterized in that
a. Consider the following single-input single-output nonlinear system:
y(k+1)＝f(y(k),...,y(k-n y ),u(k),...,u(k-n u ))
wherein u (k) belongs to R, and y (k) belongs to R and respectively represents the output and the input of k time; n is y And n u Are two unknown positive integers;
representing the nonlinear function of the system, u (k) is the rotational speed of the motor of the flow controller, and y (k) is the output flow.
b. For satisfying except a finite point in time, f (..) relates to the (n) th y + 2) the Partial derivatives of the variables are continuous while satisfying the generalized Lipschitz condition, there must exist a time-varying parameter φ (k) E R called Pseudo Partial Derivative (PPD), so that the dynamics of the nonlinear system can be transformed into the following form, we call the CFDL data model:
Δy(k+1)＝φ(k)Δu(k)
c. the available controller is designed as
Wherein, y * (k + 1) is the desired output, ρ ∈ (0, 1)]Is the step size factor, λ is the adjustable parameter, and φ (k) is the pseudo-partial derivative at time k, abbreviated as PPD.
d. Since the mathematical model of the system is unknown, the pseudo partial derivative PPD is a time-varying parameter, and the precise true value is difficult to obtain. Therefore, it is necessary to design some kind of estimation algorithm for estimating the pseudo-partial derivative PPD using the input and output data of the controlled system. The following PPD estimation criteria function is proposed.
Where μ > 0 is a weighting factor. The estimation algorithm of the available PPD is
Where η ∈ (0, 1) is the step size factor added.
(III) advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
(1) Be convenient for remove, provide storage object article, medicine function simultaneously, make things convenient for medical personnel to deposit the medicine to can heat up and keep warm to store according to the demand, can realize taking out the medicine in advance and in time infusing, improve the efficiency of changing dressings.
(2) The problem of flow control is solved, and the medical staff can conveniently carry out transfusion at different speeds on the patient facility according to different conditions of the patient.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic view of a portable medical infusion cassette in accordance with an embodiment of the application;
FIG. 2 is a schematic diagram of the external appearance of a portable medical delivery fluid cassette according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a storage area according to an embodiment of the present application;
FIG. 4a,4b,4c are schematic views of a flow controller, bladder and compression plate according to an embodiment of the present application;
FIG. 5 is a schematic diagram of an internal structure of a flow controller according to an embodiment of the present application;
FIG. 6 is a schematic view of the operation of an infusion according to an embodiment of the present application;
reference numerals:
1 box body, 2 box covers, 3 pressure sensors, 4 temperature sensors, 5 magnetic suction strips, 6 heating components, 7 fixing belts, 8 multi-gear flow control switches, 9 power switches, 10 storage areas, 11 through holes, 12 air outlet holes, 13 side holes, 14LCD display screens, 15 buzzers, 16 sliding rails, 17 first storage areas, 171 transfusion heating paste placement areas, 18 second storage areas, 181 phenolic resin, 19 lifting handles, 20 flow control controllers, 21 transfusion tubes, 22 air bags, 23 one-way valves, 24 air pumps, 25 pressure reducing valves, 26 transfusion bag pressure plates, 201 pump casings, 202 rotors, 203 rollers, 204 rotating shafts, 205U-shaped tubes, 206 screws, 207 rolling shafts
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure of the present disclosure. It is to be understood that the embodiments described are only a few embodiments of the present disclosure, and not all embodiments. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
It should be further noted that the drawings provided in the following embodiments are only schematic illustrations of the basic concepts of the present disclosure, and the drawings only show the components related to the present disclosure rather than being drawn according to the number, shape and size of the components in actual implementation, and the types, the amount and the proportion of the components of the pressure sensor 3 may be arbitrarily changed in actual implementation, and the layout of the components may be more complicated.
Please refer to fig. 1-2. The portable medical transfusion box comprises a box body 1 and a box cover 2, wherein the box body 1 is divided into a transfusion working area and a medicine storage area 10, and a transfusion bag matched with the portable medical transfusion box is used. The box cover 2 of the portable medical infusion box is characterized by comprising an LCD display screen 14, a buzzer 15, a pressure sensor 3, a heating component 6 and a magnetic suction strip 5. The LCD display screen 14 is arranged on a panel outside the box cover 2, and the functions comprise: a power source indication; indicating air pressure; indicating the infusion completion progress; indicating constant temperature; displaying the working state of the power supply, and the like. The buzzer 15 is arranged on the panel on the side surface of the box cover 2; the pressure sensor is arranged on the inner side of the box cover 2 and is positioned above the infusion bag pressurizing plate 26; the heating component 6 comprises a heating wire or a heating plate, and is arranged on the inner side of the box cover 2; the magnetic suction strips 5 are three and are arranged on the inner side of the box cover 2.
The box body 1 of the portable medical infusion box is characterized by comprising a power switch 9, a multi-gear flow control switch 8, a temperature sensor 4, a fixing band 7 and a side hole 13. An infusion tube 21 is arranged on the box body 1 to penetrate through the hole 11; the power switch 9 and the multi-gear flow control switch 8 are arranged on the outer side of the box body 1; the side wall of the box body 1 is provided with an air outlet 12; the upper part of the box body 1 is provided with a lifting flap 19; the temperature sensor 4 is arranged inside the box body 1; the fixing strap 7 and the side hole 13 are arranged inside the box body 1, the fixing strap 7 penetrates through the side hole 13 to further fix the infusion bag, and the medicine storage area 10 slides through the sliding rail 16.
As shown in fig. 4, the infusion work area comprises an air pump 24, an air bag 22, an infusion bag pressurizing plate 26, a control circuit and a power supply which are arranged inside the box body 1. The air pump 24 is connected with the air bag 22 through a one-way valve 23; the air bag 22 is arranged in the box body 1, a pressure reducing valve 25 is further arranged on the air bag 22, and the infusion bag is arranged above the air bag 22; the infusion bag pressurizing plate 26 is arranged above the infusion bag, is made of elastic materials and is arc-shaped in side view; when in use, the arc top of the infusion bag pressurizing plate 26 is in contact with the inner wall of the box cover 2, and the middle part of the infusion bag pressurizing plate is in contact with the pressure sensor 3; the output end of the control circuit is respectively connected with the air pump 24 and the flow controller 20, and the flow rate during transfusion are controlled by controlling the flow controller 20.
As shown in fig. 3, the medicine storage area 10 includes a first storage area 17 and a second storage area 18. The heating component and the temperature sensor 4 are arranged in the first storage area 17, so that the real-time temperature of the medicine can be detected, the medicine can be continuously heated under special conditions, two gaps are respectively arranged on the left side and the right side of the first storage area 17 and the second storage area 18, and the gaps on the left side and the right side of the first storage area 17 are used for placing the infusion heating patch 171; phenolic resin 181 heat preservation layers are arranged in gaps on the left side and the right side of the second storage area 18 and are used for heat preservation and storage of medicines. The portable medical infusion box is matched with an infusion bag for use, the infusion bag is connected with an infusion tube 21, and the flow controller 20 and the flow sensor are arranged on the infusion tube 21.
As shown in fig. 5, the flow rate controller further includes a pump housing 201, a rotor 202, a roller 203, a rotating shaft 204, a U-shaped pipe 205, a screw 206, and a rolling shaft 207. A U-shaped tube 205 having elasticity is provided in the pump case 201. The rotating shaft 204 is driven by a speed regulating motor, and when the medicine dispensing device works, the rotor 202 rotates, the U-shaped pipe 205 moves along with the rotor, and the medicines are extruded and pushed in sections. The purpose of controlling the flow rate is achieved by controlling different rotating speeds.
In this embodiment, portable medical infusion box is convenient for remove, provides storage object article, medicine function simultaneously, makes things convenient for medical personnel to deposit the medicine to can heat up and keep warm to store according to the demand, can realize taking out the medicine in advance and in time infusing, improve the efficiency of changing dressings.
The embodiment of the invention also provides an infusion control method, which comprises the following steps:
in the flow controller 20 in the portable medical infusion box, the relationship between the motor and the flow is as follows:
in the formula, M t Is the motor torque; q is the flow rate; alpha represents the guide vane opening; n is the rotating speed of the motor, and n is less than 3000 rpm; h is the head.
When the motor is started to work, the motor is started,
wherein, Δ α represents a guide vane opening deviation value, Δ n represents a rotation speed deviation value, and Δ H represents a water head deviation.
According to the above formula can obtain
The flow controller 20 in the portable medical infusion box is characterized in that
a. Consider the following single-input single-output nonlinear system:
y(k+1)＝f(y(k),...,y(k-n y ),u(k),...,u(k-n u ))
wherein u (k) belongs to R, and y (k) belongs to R and respectively represents the output and the input of k time; n is y And n u Are two unknown positive integers;
representing the non-linear function of the system, u (k) is the rotational speed of the motor of the flow controller and y (k) is the output flow.
b. F (..) about the (n) th except for a finite point in time y + 2) the Partial derivatives of the variables are continuous while satisfying the generalized Lipschitz condition, there must exist a time-varying parameter φ (k) E R called Pseudo Partial Derivative (PPD), so that the dynamics of the nonlinear system can be transformed into the following form, we call the CFDL data model:
Δy(k+1)＝φ(k)Δu(k)
c. the available controller is designed as
Wherein, y * (k + 1) is the desired output, ρ ∈ (0, 1)]Is the step size factor, λ is the adjustable parameter, and φ (k) is the pseudo-partial derivative at time k, abbreviated as PPD.
d. Since the mathematical model of the system is unknown, the pseudo partial derivative PPD is a time-varying parameter, and the precise true value is difficult to obtain. Therefore, it is necessary to design some kind of estimation algorithm that estimates the pseudo-partial derivative PPD using input and output data of the controlled system. The following PPD estimation criteria function is proposed.
Where μ > 0 is a weighting factor. The estimation algorithm of available PPD is
Where η ∈ (0, 1) is the step size factor added.
The transfusion box further comprises an alarm circuit connected with the output end of the microprocessor, and the output end of the alarm circuit is respectively connected with the LCD display screen 14 and the buzzer 15. When the liquid medicine in the infusion bag is completely infused and no liquid flows in the infusion tube 21, the flow sensor arranged in the infusion tube 21 transmits a signal to the microprocessor, the signal is output to the alarm circuit after being processed by the microprocessor, the alarm circuit simultaneously outputs an alarm signal to the LCD display screen 14 for displaying, and outputs an alarm signal to the buzzer 15 for reminding medical staff and the infusion person of the completion of the infusion.
The infusion work schematic diagram is shown in fig. 6: the portable medical transfusion box device takes a microprocessor as a core, collects data of a flow sensor and a pressure sensor and processes the data, realizes the control of a flow controller, an air pump and a pressure reducing valve according to input instructions and sensor data, and indicates a power supply and air pressure according to signals of the flow sensor and power supply information; the infusion completion progress indication, the constant temperature indication information and the like are transmitted to the display circuit to be displayed through the LCD display screen.
The working principle of the portable medical infusion box is as follows:
1. the bag is placed over the bladder 22 and secured with securing straps 7. And the infusion bag pressurizing plate 26 is placed above the infusion bag and the box cover 2 is closed.
2. The air pump 24 is started, the air bag 22 is pressed in through the one-way valve 23, the air bag 22 extrudes the infusion bag after being expanded, and then the infusion bag flows out through the infusion tube 21.
3. The control circuit regulates the output pressure of the air pump 24 so that the air bladder 22 squeezes the bag, thereby regulating the flow of liquid from the bag per minute.
4. The flow controller 20 is controlled by the multi-gear flow control switch 8 to adjust the transfusion speed.
5. After infusion is completed, the air bag 22 continuously expands to push the pressurizing plate 26 of the infusion bag to rise until the pressurizing plate pushes against the pressure sensor 3 on the box cover 2, and the control circuit starts the pressure reducing valve 25 and the exhaust fan 12 to quickly exhaust and reduce pressure. The LCD display screen 14 and the buzzer 15 are started to remind the medical staff of completing the infusion.
6. After the infusion is finished, the box cover 2 is opened to take out the empty infusion bag.
7. If the infusion needs to be repeated, the new medicine which is previously stored by heating is taken out from the second storage area 18, and the subsequent supplementary medicine is put into the first storage area 17 to be heated, and the steps are repeated from 1 step to 6.
In the embodiment, the problem of flow control is solved, and the medical care personnel can conveniently carry out transfusion on the patient facilities at different speeds according to different conditions of the patient.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.
Claims (10)
1. A portable medical infusion box is characterized by comprising a box body (1) and a box cover (2), wherein the box body (1) is divided into an infusion working area, a medicine storage area (10) and an infusion bag matched with the portable medical infusion box for use;
the box cover (2) comprises an LCD display screen (14), a buzzer (15), a pressure sensor (3), a heating part (6) and a magnetic suction strip (5);
the LCD display screen (14) is arranged on a panel on the outer side of the box cover (2); the buzzer (15) is arranged on a panel on the side surface of the box cover (2); the pressure sensor (3) is arranged on the inner side of the box cover (2) and is positioned above the infusion bag pressurizing plate (26); the heating component (6) comprises an electric heating wire or an electric heating plate and is arranged on the inner side of the box cover (2); the number of the magnetic suction strips (5) is three, and the magnetic suction strips are arranged on the inner side of the box cover (2).
2. The portable medical infusion box according to claim 1, wherein the box body (1) comprises a power switch (9), a multi-gear flow control switch (8), a temperature sensor (4), a fixing band (7), a side hole (13) and a sliding rail (16); the infusion tube (21) is arranged on the box body (1) and penetrates through the hole (11); the power switch (9) and the multi-gear flow control switch (8) are arranged on the outer side of the box body (1); the side wall of the box body (1) is provided with an air outlet (12); the upper part of the box body (1) is provided with a lifting flap (19); the temperature sensor (4) is arranged in the box body (1); the fixing strap (7) and the side hole (13) are arranged inside the box body (1), and the fixing strap (7) penetrates through the side hole (13) to further fix the infusion bag; the slide rails (16) are arranged on two sides inside the box body (1).
3. The portable medical infusion box according to claim 1, wherein the infusion working area comprises an air pump (24), an air bag (22), an infusion bag pressurizing plate (26), a control circuit and a power supply which are arranged inside the box body (1); the air pump (24) is connected with the air bag (22) through a one-way valve (23); the air bag (22) is arranged inside the box body (1), a pressure reducing valve (25) is arranged on the air bag (22), and the infusion bag is arranged above the air bag (22); the infusion bag pressurizing plate (26) is arranged above the infusion bag, is made of elastic materials and is arc-shaped in side view; when the infusion bag pressurizing plate is used, the arc-shaped top of the infusion bag pressurizing plate (26) is contacted with the inner wall of the box cover (2), and the middle part of the infusion bag pressurizing plate is contacted with the pressure sensor (3); the output end of the control circuit is respectively connected with the air pump (24) and the flow controller (20), and the flow rate during infusion are controlled by controlling the flow controller (20).
4. The portable medical infusate caddy of claim 3, wherein the drug storage area (10) comprises a first storage area (17) and a second storage area (18); the left side and the right side of the first storage area (17) and the second storage area (18) are respectively provided with two gaps, the spaces on the left side and the right side of the first storage area (17) are used for placing an infusion heating patch (171), and meanwhile, a heating component is arranged in the first storage area (17), so that the continuous heating of the medicine under special conditions can be realized; phenolic resin heat-insulating layers (181) are arranged in the spaces on the left side and the right side of the second storage area (18) and are used for heat-insulating and storing medicines.
5. The portable medical infusion solution box according to claim 3, wherein the flow controller (20) comprises a pump shell (201), a rotor (202), a roller (203), a rotating shaft (204), a U-shaped pipe (205), a screw (206) and a rolling shaft (207); an elastic U-shaped pipe (205) is arranged in the pump shell (201); the rotating shaft (204) is driven by a speed regulating motor, when the medicine dispensing machine works, the rotor (202) rotates, the U-shaped pipe (205) moves along with the rotor, and medicines are extruded and pushed in sections; the purpose of controlling the flow rate is achieved by controlling different rotating speeds.
6. The infusion control method of the portable medical infusion box is characterized in that for an infusion flow controller, the relation between a motor and the flow is as follows:
in the formula, M t Is the motor torque; q is the flow rate; alpha represents the opening degree of the guide vane; n is the motor rotation speed; h is the head.
7. The portable medical cassette of claim 6, wherein the motor is turned on
Wherein, delta alpha represents the deviation value of the opening degree of the guide vane, delta n represents the deviation value of the rotating speed, and delta H represents the deviation of the water head;
can obtain the product
8. The portable medical infusate caddy of claim 7, wherein the infusate flow controller employs the following single input single output non-linear system:
y(k+1)＝f(y(k),...,y(k-n y ),u(k),...,u(k-n u ))
wherein u (k) ∈ R, and y (k) ∈ R respectively represent times kAn output and an input; n is y And n u Are two unknown positive integers; f (.):
representing the nonlinear function of the system, u (k) is the rotational speed of the motor of the flow controller, and y (k) is the output flow.
9. The portable medical infusate caddy of claim 6, wherein infusate flow controller employs a Compact Form Dynamic Linearization (CFDL) data model:
Δy(k+1)＝φ(k)Δu(k)
wherein, y * (k + 1) is the desired output, ρ ∈ (0, 1)]Is the step size factor, λ is the adjustable parameter, and φ (k) is the pseudo-partial derivative at time k, abbreviated as PPD.
10. The portable medical fluid delivery cassette of claim 9, wherein the following PPD estimation criteria function is employed:
wherein μ > 0 is a weighting factor; the estimation algorithm of available PPD is:
where η ∈ (0, 1] is the step size factor added.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210835519.6A CN115337494A (en) | 2022-07-15 | 2022-07-15 | Portable medical infusion box and infusion control method |
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| CN202210835519.6A CN115337494A (en) | 2022-07-15 | 2022-07-15 | Portable medical infusion box and infusion control method |
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| CN216148748U (en) * | 2021-09-22 | 2022-04-01 | 范磊 | Infusion device for operating room nursing |
| CN216407117U (en) * | 2021-07-09 | 2022-04-29 | 湖南鹏翔致远智能装备有限公司 | Adjustable peristaltic pump |
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|---|---|---|---|---|
| CN2044653U (en) * | 1988-09-28 | 1989-09-20 | 任蜀宁 | Tubular peristaltic meatering pump |
| JP2008161669A (en) * | 2006-12-07 | 2008-07-17 | Seiko Epson Corp | Micropump, tube unit, and control unit |
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Effective date of registration: 20230802 Address after: 100039, No. 100 West Fourth Ring Road, Beijing, Fengtai District Applicant after: THE FIFTH MEDICAL CENTER OF THE CHINESE PEOPLE'S LIBERATION ARMY GENERAL Hospital Applicant after: NORTH CHINA University OF TECHNOLOGY Address before: 100043 No. 5 Jinyuanzhuang Road, Shijingshan District, Beijing Applicant before: NORTH CHINA University OF TECHNOLOGY |