Infusion system

Abstract

The infusion system comprises a medicine mixer, an infusion bag connected with the medicine mixer through a first infusion tube provided with a first valve and a medicine dispensing unit connected with a medicine inlet of the medicine mixer, and an infusion opening of the medicine mixer is connected with an infusion needle through a second infusion tube provided with a second valve; the dispensing unit comprises a mounting frame and a conveying mechanism, the mounting frame is provided with a plurality of bottle connectors for mounting a plurality of inverted medicine bottles, a medicine inlet of the medicine mixer is connected with the medicine bottles through a plurality of third infusion tubes connected in parallel, and the conveying mechanism is connected with the third infusion tubes; the conveying mechanism can pump out and convey the solvent in the medicine mixer into the medicine bottle, and pump out and convey the liquid in the medicine bottle into the medicine mixer. The dispensing unit is arranged for dispensing, medical staff do not need to dispense medicine, the liquid dispensing process is simplified, and the workload of the medical staff is reduced; each patient only needs one infusion bag, one medicine mixer and a plurality of infusion tubes, so that the use amount of the infusion bags is reduced, and the amount of medical garbage is reduced.

Description

Technical Field

[0001] The present invention belongs to the field of medical technology, and particularly relates to an infusion system. Background Art

[0002] In clinical nursing work, when nurses prepare infusion fluids, they usually need to use syringes to dissolve drugs. To prevent cross-infection, a new syringe is required for each bag of fluid, which not only increases the workload of medical staff but also may lead to operational errors.

[0003] CN202121184802.4 discloses a safe liquid preparation infusion bag. The infusion bag is divided into a liquid bag area and an internal needle area by a partition. The suction needle provided in the internal needle area can be inserted into the medicine bottle to squeeze the solvent in the liquid bag area into the medicine bottle. After the solvent and the drug are fully mixed, the sealing plug on the exhaust part is opened, and the dissolved medicine liquid in the medicine bottle enters the liquid bag area through the suction needle. This patent sets the suction needle inside the infusion bag, one needle per bag, which can prevent cross-infection and avoid misoperation caused by medical staff mixing syringes.

[0004] Normally, a patient needs to receive multiple drugs, and multiple infusion bags (five or six at most) are required. Medical staff need to prepare the liquid for each infusion bag separately. After one infusion bag is finished, medical staff need to replace it with the next one, which is a rather cumbersome operation; moreover, the consumption of infusion bags is large, generating a lot of medical waste. Summary of the Invention

[0005] To solve the technical problems existing in the prior art, the present invention provides an infusion system. By setting up a medicine preparation unit for medicine preparation, it is no longer necessary for medical staff to prepare the medicine, and there is no need to use an additional syringe to dissolve the drug, which simplifies the liquid preparation process and reduces the workload of medical staff; each patient uses only one infusion bag, one medicine mixer and several infusion tubes, reducing the number of infusion bags and medical waste.

[0006] In an embodiment of the present invention, an infusion system includes a drug mixer, an infusion bag connected to the liquid inlet of the drug mixer, and a drug preparation unit connected to the drug inlet of the drug mixer; the liquid inlet of the drug mixer is connected to the liquid outlet of the infusion bag through a first infusion tube, and a detachable first valve is provided on the first infusion tube, and the solvent in the infusion bag can be output to the drug mixer through the first infusion tube; the infusion port at the bottom of the drug mixer is connected to an infusion needle through a second infusion tube, and a detachable second valve is provided on the second infusion tube, and the mixed liquid medicine in the drug mixer is output to the infusion needle through the second infusion tube; the drug preparation unit includes a mounting rack and a conveying mechanism, the mounting rack has a plurality of bottle interfaces for mounting a plurality of inverted medicine bottles, the drug inlet of the drug mixer is connected to the medicine bottles through a plurality of third infusion tubes connected in parallel, the conveying mechanism is connected to the third infusion tubes, and the conveying mechanism can extract the solvent in the drug mixer and convey it to the medicine bottles and extract the liquid in the medicine bottles and convey it to the drug mixer through the extrusion action on the third infusion tubes.

[0007] Compared with the prior art, the technical effects achieved by the relatively superior technical solution of the present invention include:

[0008] 1. In the present invention, the drug preparation unit is provided for drug preparation, eliminating the need for medical staff to prepare drugs and the additional use of syringes to dissolve drugs, simplifying the liquid preparation process and reducing the workload of medical staff; avoiding the cross-infection problem caused by frequent syringe replacement and reducing the risk of cross-infection.

[0009] 2. The drug preparation unit, the first valve and the second valve of the present invention can be reused after disinfection. Each patient only needs one infusion bag, one drug mixer and a few infusion tubes, reducing the consumption of infusion bags and the amount of medical waste; moreover, the infusion bags, drug mixers and infusion tubes are of the same type of medical waste, reducing the types of medical waste and facilitating the classification and treatment of medical waste.

[0010] 3. The first valve, the second valve, the infusion monitor and the peristaltic pump of the present invention only contact the outer surface of the infusion tube and do not directly contact the solvent and drugs. After each infusion, there is no need for flushing and it can be put into the next use after disinfection.

[0011] 4. By setting a controller, an infusion monitor and a liquid level monitor, medical staff only need to connect the entire infusion system, and the infusion process does not require manual operation, and can automatically complete the time-sharing drug preparation and time-sharing infusion of multiple drugs, further reducing the workload of medical staff. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of an infusion system according to an embodiment.

[0013] Figure 2 It is a schematic block diagram showing the connection of each electrical component in the embodiment to the controller.

[0014] The reference numerals in the accompanying drawings of the specification include: infusion bag 10, medicament mixer 20, medicine adding connector 21, medicine dispensing unit 30, mounting bracket 31, bottle interface 311, conveying mechanism (peristaltic pump) 32, first infusion tube 40, first valve 41, second infusion tube 50, second valve 51, third infusion tube 60, infusion monitor 70, and liquid level monitor 80. Detailed Description of the Invention

[0015] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0016] The present invention provides an infusion system. As Figure 1 shown, in a preferred embodiment, it includes a medicament mixer 20, an infusion bag 10 connected to the liquid inlet of the medicament mixer 20, and a medicine dispensing unit 30 connected to the medicine inlet of the medicament mixer 20. The medicament mixer 20 is made of transparent or semi-transparent material and has a measurement scale. The medicament mixer 20 is a flexible medicament mixing bag or a rigid medicament mixing box. The infusion bag 10 contains a solvent, such as normal saline commonly used in infusion, 10% glucose injection, etc.

[0017] The liquid inlet at the top of the medicament mixer 20 is connected to the liquid outlet at the bottom of the infusion bag 10 through a first infusion tube 40. A detachable first valve 41 is provided on the first infusion tube 40. The first valve 41 is a tube clamp type valve that can be clamped on the first infusion tube 40. The infusion bag 10 is arranged above the medicament mixer 20, and the solvent in the infusion bag 10 can be output to the medicament mixer 20 by gravity through the first infusion tube 40. The infusion port at the bottom of the medicament mixer 20 is connected to an infusion needle through a second infusion tube 50. A detachable second valve 51 is provided on the second infusion tube 50. The first valve 41 is a tube clamp type valve that can be clamped on the second infusion tube 50. The mixed liquid medicine in the medicament mixer 20 is output to the infusion needle through the second infusion tube 50 and enters the human body.

[0018] The medicine dispensing unit 30 includes a mounting rack 31 and a conveying mechanism 32. The mounting rack 31 has a plurality of bottle interfaces 311 for mounting a plurality of inverted medicine bottles. One medicine bottle is mounted on one bottle interface 311. The mouth of the medicine bottle can be snapped into the bottle interface 311 to fix the medicine bottle. The medicine inlet of the mixer 20 is respectively connected to a plurality of medicine bottles through a plurality of third infusion tubes 60 connected in parallel. The third infusion tubes 60 extend into the mixer 20 near its bottom; the mouth of the medicine bottle has a rubber stopper, and the end of the third infusion tube 60 away from the mixer 20 has a needle (preferably a plastic needle) that can pierce the rubber stopper and insert into the medicine bottle. For drugs stored in glass ampoules, they can be opened and injected into a sterile medicine bottle and sealed (preferably with a locking structure and cannot be opened). This sterile medicine bottle can be inverted and fixed on the mounting rack 31.

[0019] The conveying mechanism 32 is connected to the third infusion tube 60. Through the extrusion action on the third infusion tube 60, the conveying mechanism 32 can extract the solvent in the mixer 20 and convey it to the medicine bottle, and extract the liquid in the medicine bottle and convey it to the mixer 20. Specifically, the conveying mechanism 32 is a peristaltic pump with multi-channels that can be independently controlled and can work in both forward and reverse directions, such as the Reever ds600-x peristaltic pump. A plurality of third infusion tubes 60 are respectively laid in a plurality of channels of the peristaltic pump 32. The speed of conveying the liquid medicine can be controlled by setting the flow rate, rotation speed of the peristaltic pump 32 and the inner diameter of the third conveying tube 60 to control the final conveying speed. For example, when setting the flow rate to 20 ml / minute, it takes about 15 seconds to convey 5 ml of the liquid medicine. The way of the fluid in the conveying tube of the peristaltic pump 32 is the prior art and will not be elaborated here.

[0020] During use, select an infusion bag 10 with a suitable specification according to the infusion volume of the patient. The mixer 20 is connected to the infusion bag 10 through a first infusion tube 40. The mixer 20 is respectively connected to a plurality of medicine bottles through a plurality of third infusion tubes 60. The third infusion tubes 60 are connected to the peristaltic pump 32. Invert the medicine bottle connected to the third infusion tube 60 on the mounting rack 31. The infusion bag 10 and the mixer 20 can be hung on the infusion pole. The medicine dispensing unit 30 is placed on the bedside table, a mobile cart or fixed on the wall through a bracket.

[0021] Close the second valve 51 and open the first valve 41. The solvent in the infusion bag 10 enters the medicament mixer 20. When the set amount of solvent for one kind of drug is reached, close the first valve 41. Start the peristaltic pump 32 to work in the forward direction, and transport part of the solvent in the medicament mixer 20 to the first medicine bottle. The solvent dissolves the drug in the medicine bottle. Then, the peristaltic pump 32 works in the reverse direction to transport the liquid medicine in the first medicine bottle to the medicament mixer 20 for mixing and dilution, completing the preparation of the first kind of medicine. After that, open the second valve 51 and perform the infusion of the first kind of drug through the second infusion tube 50. After the first kind of drug is finished, close the second valve 51 and open the first valve 41, repeat the above process to complete the preparation of the second kind of medicine, open the second valve 51, and perform the infusion of the second kind of drug through the second infusion tube 50. Repeat this way until the infusion of the last kind of drug is completed.

[0022] During actual use, the height difference between the peristaltic pump 32 and the medicament mixer 20, as well as the height difference between the peristaltic pump 32 and the medicine bottles on the support frame 31, should be minimized to ensure that it is within the lift range of the peristaltic pump 32 and ensure the smooth transportation of the liquid medicine by the peristaltic pump 32. In a more preferred embodiment, the channel of the peristaltic pump 32 can be placed horizontally, the medicament mixer 20 and the medicine bottles on the support frame 31 are on the same horizontal plane and are both lower than the height of the infusion bag 10. When one channel of the peristaltic pump 32 is open, the other channels are closed to prevent the drugs from mixing.

[0023] It should be noted that if there is a need to flush the tube due to a reaction between two kinds of drugs, after one kind of drug is finished, the first valve 41 can be opened, a certain amount of solvent is allowed to flow into the medicament mixer 20 and then the first valve 41 is closed. Only pure solvent is injected into the medicament mixer 20 to avoid the reaction between the residual previous drug in the medicament mixer 20 and the second infusion tube 50 and the next drug. Part of the pure solvent injected into the medicament mixer 20 is used to flush the second infusion tube 50 and is given to the patient, and the remaining can be given to the patient or sucked away through the negative pressure device connected to the medicament mixer 20. When sucking away through the negative pressure device, the first valve 41 and the second valve 51 need to be closed, and at the same time, the channels of the peristaltic pump 32 are closed.

[0024] The present invention simplifies the liquid preparation process and reduces the workload of medical staff by setting up the medicine preparation unit 30 for medicine preparation, eliminating the need for medical staff to prepare medicine and the additional use of syringes to dissolve drugs; it avoids the cross-infection problem caused by frequent syringe replacement and reduces the risk of cross-infection.

[0025] The infusion bag 10, the medicament mixer 20, and the infusion tube (including the first infusion tube 40, multiple third infusion tubes 60, and the second infusion tube 50) of the present invention are disposable products, while the dispensing unit 30, the first valve 41, and the second valve can be reused after disinfection. When using the infusion system of the present invention, each patient only needs one infusion bag 10, one medicament mixer 20, and a few infusion tubes, reducing the usage amount of the infusion bag 10. Especially for those who need to infuse five or six infusion bags 10 at a time, the amount of medical waste is reduced; moreover, the infusion bag 10, the medicament mixer 20, and the infusion tube are of the same type of medical waste, reducing the types of medical waste and facilitating the classification and treatment of medical waste.

[0026] Among them, the capacity of the medicament mixer 20 can be selected as 200 ml. Each time, at least 100 ml of solvent is injected from the infusion bag 10 into the medicament mixer 20. At this time, the capacity of the infusion bag 10 is preferably 500 ml or more. When the amount of infusion required by the patient is large, such as when a bottle of sodium chloride solution is not enough, the infusion bag 10 can be replaced. In addition, if the patient needs to infuse two solutions of sodium chloride and glucose, two corresponding infusion bags 10 are set, and the medical staff manually replaces them to connect the first infusion tube 40 to different infusion bags 10.

[0027] In another preferred embodiment, a dosing adapter 21 is hermetically connected to the dosing port of the medicament mixer 20. The dosing interface can be glued and welded at the dosing port. The dosing adapter 21 has a plurality of communication ports (such as six are set to meet the daily infusion needs) communicating with the dosing port. Multiple third infusion tubes 60 are respectively hermetically connected to the plurality of communication ports and inserted into the medicament mixer 20 near its bottom. By providing the dosing adapter 21, the medicament mixer 20 has ports independently connected to each third infusion tube 60, avoiding drug mixing and being safer.

[0028] In some embodiments, initially, the first infusion tube 40 and the second infusion tube 50 are already connected to the medicament mixer 20 in a matching manner. The third infusion tubes 60 are provided in a matching manner with the medicament mixer 20 (six third infusion tubes 60 are connected to the medicament mixer 20) or not in a matching manner (no third infusion tubes 60 are connected to the medicament mixer 20). When the third infusion tubes 60 are not provided in a matching manner with the medicament mixer 20, the third infusion tubes 60 are detachably connected to the communication ports, and covers are provided at the communication ports for closing them. When the types of drugs for the patient's infusion are few, such as only three types, three selected third infusion tubes 60 are connected to the communication ports, and the remaining three communication ports can be covered by the covers, thereby reducing the waste of the third infusion tubes 60.

[0029] Such as Figure 1 and Figure 2As shown, in another preferred embodiment of the present invention, the infusion system further includes a controller. The solvent control terminal of the controller is connected to the enable terminal of the first valve 41, the infusion control terminal of the controller is connected to the enable terminal of the second valve 51, and the drug addition control terminal of the controller is respectively connected to the enable terminals of multiple channels of the conveying mechanism 32 to independently control the operation of different channels in a time-sharing manner. Among them, the first valve 41 and the second valve 51 are pipe clamp type solenoid valves and can be respectively clamped on the first infusion tube 40 and the second infusion tube 50.

[0030] By setting the controller, the controller controls the opening and closing of the first valve 41 and the second valve, allowing a certain amount of solvent to flow into the mixer 20. The peristaltic pump 32 operates for drug preparation. After drug preparation, the second valve 51 is controlled to open for infusion. After one type of drug is finished, the opening and closing of the first valve 41 and the second valve 51 are controlled to allow a certain amount of solvent to flow into the mixer 20 again. The peristaltic pump 32 operates for drug preparation. After drug preparation, the second valve 51 is controlled to open for infusion until all drugs are finished. Medical staff only need to connect the entire infusion system, and the infusion process can be automatically completed without manual operation, enabling time-sharing drug preparation and time-sharing infusion of multiple drugs, reducing the workload of medical staff. Specifically, the controller can control the working sequence of the channels of the peristaltic pump 32 according to the drug infusion sequence so that the drugs are input in sequence. The drug infusion sequence of the specific controller can be set by the staff.

[0031] As Figure 1 shown, in another preferred embodiment, a detachable infusion monitor 70 for monitoring the infusion situation is further connected to the second infusion tube 50 (such as the infusion monitor 70 disclosed in CN200820149876.2, the monitor for infusion monitoring disclosed in CN201120074791.4, and the intelligent infusion monitoring device disclosed in CN201220679798.3). The infusion monitor 70 is arranged downstream of the second valve 51, and the signal output terminal of the infusion monitor 70 is connected to the infusion situation input terminal of the controller. The controller controls the opening and closing of the first valve 41 and the second valve according to the completion situation of one type of liquid medicine infusion to allow a certain amount of solvent to flow into the mixer 20. The infusion monitor 70 is used to monitor whether the liquid medicine conveyed through the second infusion tube 50 has finished dripping and transmit the signal to the controller. When one type of liquid medicine has finished infusion, the controller controls the second valve 51 to close and the first valve 41 to open, and after allowing a certain amount of solvent to flow into the mixer 20, the first valve 41 is closed.

[0032] As Figure 1As shown, in another preferred embodiment, the medicament mixer 20 is made of a transparent or semi-transparent material and has a metering scale. A liquid level monitor 80 for monitoring the liquid level therein is provided outside the medicament mixer 20, and the signal output end of the liquid level monitor 80 is connected to the controller. The liquid level monitor 80 monitors the liquid level in the medicament mixer 20 and transmits a signal to the controller. When the amount of solvent flowing into the medicament mixer 20 reaches a set value, the controller controls the first valve 41 to close.

[0033] Specifically, the liquid level monitor 80 can adopt an optical sensor (such as an infrared / laser sensor, which emits infrared light / laser and receives the reflected signal to detect the change in liquid level height), an ultrasonic sensor (which emits ultrasonic waves to measure the distance from the liquid surface to the sensor, and the ultrasonic sensor is fixedly installed outside the bag, and a regularly shaped infusion bag is used), or image recognition technology (a camera takes pictures of the scale line and uses an AI algorithm to recognize the liquid level), all of which are existing technologies and will not be elaborated here.

[0034] In another preferred embodiment, the infusion system further includes a gripper that can be opened and closed (not shown in the figure). The structure of the gripper is similar to that of a human hand. The gripper can be installed on the infusion tube, and the medicament mixer 20 is a medicament mixing bag located in the gripper. The opening and closing control end of the controller is connected to the enabling end of the gripper, and the medicament is mixed by kneading the medicament mixing bag by opening and closing the gripper, simulating the kneading of the medicament mixing bag by hand to make the mixing of the drug and the solvent more uniform.

[0035] In a preferred embodiment of the present invention, the specific working process is as follows:

[0036] The infusion nurse checks the doctor's order to determine information such as the type of infusion, dosage, drug injection sequence, and infusion speed.

[0037] Select an infusion bag 10 with an appropriate capacity and connect it to the disposable first infusion tube 40.

[0038] According to the drug injection sequence and quantity, connect the connectors of the third infusion tube 60 to the medicine bottles respectively, install the third infusion tube 60 in the channel of the peristaltic pump 32, control the working sequence of the channel of the peristaltic pump 32 to be consistent with the drug injection sequence, and form a drug injection sequence in the controller.

[0039] If flushing the tube is required, add a flushing step to the drug injection sequence to form the final injection sequence.

[0040] The controller controls the operation of the first valve 41, the second valve 51, and the peristaltic pump 32 according to the injection sequence and the infusion speed.

[0041] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An infusion system, characterized in that: It includes a medicine mixer, an infusion bag connected to a liquid inlet of the medicine mixer, and a medicine dispensing unit connected to the medicine inlet of the medicine mixer; The liquid inlet of the medicine mixer is connected to the liquid outlet of the infusion bag through a first infusion tube, and a detachable first valve is provided on the first infusion tube, so that the solvent in the infusion bag can be output to the medicine mixer through the first infusion tube; The infusion port at the bottom of the medicine mixer is connected to the infusion needle through a second infusion tube, and a detachable second valve is provided on the second infusion tube. The medicine mixed by the medicine mixer is output to the infusion needle through the second infusion tube; The dispensing unit includes a mounting frame and a conveying mechanism. The mounting frame has multiple bottle interfaces for mounting multiple inverted medicine bottles. The medicine inlet of the medicine mixer is connected to the medicine bottles through multiple third infusion tubes connected in parallel. The conveying mechanism is connected to the third infusion tubes. The conveying mechanism can extract the solvent in the medicine mixer and transport it to the medicine bottle, and extract the liquid in the medicine bottle and transport it to the medicine mixer by squeezing the third infusion tubes.

2. The infusion system according to claim 1, characterized in that: The conveying mechanism is a peristaltic pump with multiple channels that can be independently controlled and can work in both forward and reverse directions. Multiple third infusion tubes are respectively laid in multiple channels of the peristaltic pump.

3. The infusion system according to claim 1, characterized in that: The mouth of the medicine bottle is provided with a rubber stopper, and the end of the third infusion tube away from the medicine mixer is provided with a needle capable of piercing the rubber stopper and being inserted into the medicine bottle.

4. The infusion system according to claim 1, characterized in that: The dosing port of the drug mixer is sealedly connected with a dosing connector, the dosing connector has a plurality of communication ports communicating with the dosing port, and the plurality of third infusion tubes are respectively connected with the plurality of communication ports.

5. The infusion system according to claim 4, characterized in that: The third infusion tube is detachably connected to the communication port, and a sealing cover for sealing the communication port is provided at the communication port.

6. An infusion system according to any one of claims 1 to 5, characterized in that: It also includes a controller, wherein the solvent control end of the controller is connected to the enable end of the first valve, the infusion control end of the controller is connected to the enable end of the second valve, and the drug addition control end of the controller is respectively connected to the enable ends of multiple channels of the conveying mechanism to independently control the operation of different channels in time.

7. The infusion system according to claim 6, characterized in that: The first valve and the second valve are tube clamp type solenoid valves, which can be clamped on the first infusion tube and the second infusion tube respectively.

8. The infusion system according to claim 6, characterized in that: The second infusion tube is detachably connected with an infusion monitor for monitoring the infusion status, and the signal output end of the infusion monitor is connected to the infusion status input end of the controller; The controller controls the opening and closing of the first valve and the second valve to flow a certain amount of solvent into the medicine mixer according to the completion of the infusion of a kind of medicine liquid.

9. The infusion system according to claim 6, characterized in that: The medicine mixer is made of transparent or translucent material and has a measuring scale. A liquid level monitor for monitoring the liquid level therein is arranged outside the medicine mixer, and a signal output end of the liquid level monitor is connected to a controller.

10. The infusion system according to claim 6, characterized in that: It also includes a clamping jaw that can be opened and closed. The medicine mixer is a medicine mixing bag located in the clamping jaw. The opening and closing control end of the controller is connected to the enabling end of the clamping jaw. The medicine is mixed by kneading the medicine mixing bag through opening and closing the clamping jaw.

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