Infusion system

Abstract

An infusion system, comprising: a three-way valve (10), having a first liquid inlet (11) for an intravenous infusion liquid to be fed into, a second liquid inlet (12) for a syringe liquid to be fed into, and a liquid outlet (21) communicating with a venipuncture needle; an information matching structure, comprising a first identification code used for identifying the identity information of the three-way valve (10) and an identifier used for identifying the first identification code; a measurement structure, comprising a first flow sensor (18) used for measuring the liquid flow rate of the first liquid inlet (11), a second flow sensor (17) used for measuring the liquid flow rate of the second liquid inlet (12), and a pressure sensor (19) used for measuring the pressure of the liquid outlet (21); and a controller, which can acquire the identity information and the flow rates and the pressure information and correspondingly record same under corresponding identity information items, and, once an information anomaly occurs, give out an alarm. The infusion system can achieve accurate control on the inflow and outflow amounts of drugs, and thus facilitates solving the problem of drug waste.

Description

Infusion system Technical Field

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

[0002] Opioids are alkaloids extracted from the opium poppy and their derivatives, both in vivo and in vitro, that interact with specific central nervous system receptors to relieve pain. These analgesics primarily include morphine, codeine, dihydrocodeine, hydromorphone, oxycodone, fentanyl, sufentanil, remifentanil, and meperidine. They are commonly used for the treatment of moderate to severe pain and perioperative anesthesia. However, high doses of opioids can cause stupor, coma, and respiratory depression. Repeated use can lead to changes in tolerance and neuro-addictive behavior, resulting in physiological, psychological, and social harm. Therefore, as controlled drugs, the clinical use of opioids must be strictly controlled, with precise information on dosage, purpose, and usage.

[0003] The Department of Anesthesiology is the clinical department with the highest usage of opioids. Currently, anesthesiologists routinely collect a certain amount of opioids from drug administrators based on the number of surgeries performed that day and the physician's instructions. After the surgeries are complete, patients return any remaining medication and empty bottles, and maintain a personal registration and medication record. However, this manual medication management method is not conducive to precise control of opioid intake and output, and also results in excess drug waste.

[0004] Summary of the Invention

[0005] The purpose of this application is to overcome the deficiencies of the above-mentioned prior art and to provide an infusion system that aims to achieve precise control of drugs.

[0006] An infusion system, comprising:

[0007] A three-way valve having a first inlet for receiving intravenous infusion liquid, a second inlet for receiving syringe liquid, and an outlet connected to the intravenous puncture needle;

[0008] An information matching structure, comprising a first identification code for identifying identity information of the three-way valve and an identifier for identifying the first identification code;

[0009] a detection structure comprising a first flow sensor for detecting the liquid flow of the first liquid inlet, a second flow sensor for detecting the liquid flow of the liquid outlet, and a pressure sensor for detecting the pressure of the liquid outlet;

[0010] The controller can obtain the identity information identified by the identifier, can obtain the information detected by the first flow sensor, the second flow sensor and the pressure sensor and record them under the corresponding identity information items, and issue an alarm through the alarm device if the information is abnormal.

[0011] Optionally, the alarm is a voice alarm provided on the three-way valve.

[0012] Optionally, the three-way valve has an attachment area, the attachment area is used to stick a second identification code, the second identification code is used to identify patient information, and the identifier can identify the second identification code.

[0013] Optionally, it is characterized in that the controller sends a matching success message after receiving the identity information and the patient information.

[0014] Optionally, the controller obtains and records information detected by the first flow sensor and the second flow sensor, including injection time, injection dosage, and stop time.

[0015] Optionally, the controller issues an alarm through the alarm device when it receives pressure information from the liquid outlet but does not receive flow information from the first liquid inlet or the second liquid inlet, or when it receives flow information from the first liquid inlet or the second liquid inlet but does not receive pressure information from the liquid outlet.

[0016] Optionally, the controller issues an alarm through the alarm device when the pressure at the liquid outlet is greater than a preset threshold.

[0017] Optionally, the controller sends a system startup message when the flow information of the first liquid inlet or the second liquid inlet matches the pressure information of the liquid outlet.

[0018] Optionally, the detection structure further includes a second pressure sensor provided at the second liquid inlet, the second pressure sensor sending a pressure signal when the syringe is connected to the second liquid inlet, and the controller sending a connection success message when receiving the pressure signal.

[0019] Optionally, the three-way valve is provided with a reader at the second liquid inlet for identifying the drug information of the syringe.

[0020] Optionally, the drug information includes drug name and drug concentration.

[0021] The infusion system provided by the present invention accurately manages the dosage of medicines through a detection structure and an information matching structure, facilitates the precise control of the amount of medicines entering and exiting, and helps to solve the problem of medicine waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] FIG1 is a schematic structural diagram of a three-way valve according to an embodiment of the present invention;

[0024] FIG2 is a schematic diagram of the three-way valve from another angle according to the embodiment of the present invention.

[0025] Description of Figure Numbers:

[0026] 10. Three-way valve; 11. First liquid inlet; 12. Second liquid inlet; 21. Liquid outlet; 18. First flow sensor; 17. Second flow sensor; 14. Attachment area; 141. Second identification code; 15. Alarm; 16. Reader; 19. Pressure sensor; 13. Rotary switch; 20. Chip. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0028] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0029] It should also be noted that the directional terms such as left, right, up and down in the embodiments of the present application are merely relative concepts or are based on the normal use status of the product, and should not be considered as restrictive.

[0030] This embodiment provides an infusion system, including a three-way valve 10 , an information matching structure, a detection structure, a controller and an alarm 15 .

[0031] Referring to Figures 1 and 2, the three-way valve 10 includes a valve body and a rotary switch 13. The valve body has two liquid inlets (corresponding to the first liquid inlet 11 and the second liquid inlet 12) and a liquid outlet 21. The rotary switch 13 is used to adjust the conduction relationship between the two liquid inlets and the liquid outlet 21. Specifically, the rotary switch 13 is connected to the valve core located in the valve body. The valve core is located at the intersection of the two liquid inlets (corresponding to the first liquid inlet 11 and the second liquid inlet 12) and the liquid outlet 21. By rotating the rotary switch 13, the rotation of the valve core is achieved. The valve core can block or avoid the channel between any liquid inlet and the liquid outlet 21, thereby achieving fluid conduction and blocking. In this embodiment, the first liquid inlet 11 is used to receive liquid for intravenous infusion. It can be understood that the first liquid inlet 11 is connected to the infusion set through an infusion tube. The liquid stored in the infusion set can be lactated Ringer's solution, sodium potassium magnesium calcium glucose injection, etc. The second liquid inlet 12 is used to receive syringe liquid, and the liquid outlet 21 is connected to the intravenous needle. Under the action of the rotary switch 13, the three-way valve 10 has three operating states: the first liquid inlet 11 is connected to the liquid outlet 21, while the second liquid inlet 12 and the liquid outlet 21 are not connected, corresponding to the intravenous infusion mode; the second liquid inlet 12 is connected to the liquid outlet 21, while the first liquid inlet 11 and the liquid outlet 21 are not connected, corresponding to the intravenous injection mode; and the first liquid inlet 11 and the second liquid inlet 12 are both connected to the liquid outlet 21, corresponding to the dosing operation under the condition of intravenous infusion. The specific structure of the three-way valve 10 can adopt the structural design of existing medical three-way valves and will not be described in detail here.

[0032] The information matching structure includes a first identification code for identifying the identity information of the three-way valve 10 and an identifier for identifying the first identification code. The first identification code can be a barcode or a QR code, storing the identity information of the corresponding three-way valve 10. The first identification code can be attached to the three-way valve 10 by affixing or inkjet printing, or it can be attached to the packaging bag or box of the three-way valve 10. In this embodiment, the first identification code is attached to the packaging bag of the three-way valve 10 by adhesive.

[0033] The detection structure includes a first flow sensor 18 for detecting the liquid flow of the first liquid inlet 11 , a second flow sensor 17 for detecting the liquid flow of the second liquid inlet 12 , and a pressure sensor 19 for detecting the pressure of the liquid outlet 21 .

[0034] The controller can obtain the identity information recognized by the identifier, can obtain the information detected by the first flow sensor 18, the second flow sensor 17 and the pressure sensor 19 and record them under the corresponding identity information items, and issue an alarm through the alarm 15 if the information is abnormal.

[0035] The controller includes a chip 20 and a computer terminal system. A barcode scanner is electrically or wirelessly connected to the computer terminal system. The barcode scanner scans the first identification code, obtains identity information, and transmits it to the mobile computer terminal. The first flow sensor 18, the second flow sensor 17, and the pressure sensor 19 are connected to the chip 20, which then transmits the information to the mobile computer terminal. The chip 20 acquires data from the first flow sensor 18, the second flow sensor 17, and the pressure sensor 19 and transmits it to the mobile computer terminal, which then acquires and records the corresponding data. In the event of an anomaly in the information, the mobile computer terminal issues an alarm via the alarm 15.

[0036] It can be understood that the code scanning and identification operation occurs before the three-way valve 10 is connected to the infusion device or syringe. The code scanner is electrically or wirelessly connected to the controller, and the code scanner identifies the first identification code and transmits the identified identity information to the controller. The controller obtains and records the identity information. Then, the liquid inlet of the three-way valve 10 is connected to the corresponding infusion device or syringe (the first liquid inlet 11 is connected to the intravenous infusion tube or the second liquid inlet 12 is connected to the syringe), and the liquid outlet 21 is connected to the venous puncture needle to achieve the connection of the infusion system. At this time, the infusion system is in a waiting state for infusion. The pressure sensor 19 can obtain the patient's peripheral venous pressure and form a pressure signal to send to the controller. When the infusion device is turned on or liquid is injected with a syringe, the infusion state is started, the first flow sensor 18 and / or the second flow sensor 17 receives the liquid flow rate information, and sends the flow rate signal to the controller. The controller receives the flow rate signal and records the corresponding flow rate information under the corresponding identity information item.

[0037] After obtaining the identity information, the controller collects and records the information from the first flow sensor 18, the second flow sensor 17 and the pressure sensor 19 under the identity information to indicate that the information measured by the first flow sensor 18, the second flow sensor 17 and the pressure sensor 19 are all information at the three-way valve 10, thereby achieving information matching.

[0038] In the case of abnormal information, the alarm device 15 sounds an alarm. Abnormal information includes but is not limited to abnormal liquid input, abnormal liquid output, etc.

[0039] A liquid input abnormality occurs when, after the first liquid inlet 11 is connected to the intravenous infusion tube, the second liquid inlet 12 is connected to the venous puncture needle, and the liquid outlet 21 is connected to the venous puncture needle, the controller receives pressure information but does not receive liquid flow rate information, thereby determining that there is a liquid input abnormality and sounding an alarm. The alarm may be a voice announcement ("Please check the liquid"), a warning light indicating the abnormality, or a display indicating the abnormality.

[0040] Liquid output abnormalities include information mismatch and connection abnormalities. Information mismatch is manifested as follows: after the infusion system is connected, the controller receives liquid flow information but does not receive pressure information, then it is determined that the drug is pushed in violation of regulations, and the alarm 15 sounds an alarm. The alarm can be announced through voice broadcasting, "Illegal drug push, please connect the patient", or it can be indicated by a warning light, or it can be indicated by a display screen. Connection abnormality is manifested as follows: after the infusion system is connected, the controller receives liquid flow information and pressure information, but the pressure exceeds the set threshold, then it is determined that the puncture needle is plugged in abnormally, and the alarm 15 sounds an alarm. The alarm can be announced through voice broadcasting, "Please check the puncture needle", or it can be indicated by a warning light, or it can be indicated by a display screen.

[0041] It is understandable that the alarm 15 can present different abnormal situations in different ways, such as different voice broadcast content, different colors or flashing times of the warning light, different content displayed on the display screen, etc.

[0042] In this embodiment, the alarm 15 is a voice alarm provided on the three-way valve 10. The alarm 15 is integrated on the three-way valve 10, which is convenient for the operator to quickly locate and check the infusion system with problems.

[0043] From the above, the infusion system provided by this application accurately manages the dosage of drugs through the detection structure and information matching structure, replaces the manual management method, facilitates the precise control of the amount of drugs in and out, and is conducive to solving the problem of drug waste.

[0044] The infusion system provided in this embodiment can be applied to the management of the infusion and injection use of controlled drugs such as opioids, and can also be applied to the use of other intravenous infusion drugs, without limitation here.

[0045] In another embodiment of the present application, the three-way valve 10 has an attachment area 14, which is used to stick a second identification code 141. The second identification code 141 is used to identify patient information. The identifier can identify the second identification code 141, and the controller can obtain the patient information identified by the identifier and associate it with the identity information of the three-way valve 10.

[0046] The second identification code 141 can be a barcode or a QR code. The second identification code 141 stores patient information, including but not limited to the patient's name, ID card information, medical record number, and hospital bed. In a hospital setting, the second identification code 141 is printed by a nurse. The anesthesiologist uses an identifier to identify the information in the second identification code 141. After verifying the patient's name and medical record number, the anesthesiologist affixes the second identification code 141 to the attachment area 14. The patient information identified by the identifier is transmitted to the controller, which obtains the patient information and associates it with the identity information of the three-way valve 10.

[0047] Therefore, the infusion system can accurately locate patient information and the dosage of drugs injected by the patient, facilitate strict control of drugs, and at the same time assist anesthesiologists in managing intravenous fluid access for surgical patients, which has broad clinical prospects.

[0048] In another embodiment of the present application, the controller sends a successful match message after receiving the identity information of the three-way valve 10 and the patient information. After the three-way valve 10 and the patient information match, the successful match message is sent through voice or other means to provide positive feedback to the operator / anesthesiologist to guide the operator / anesthesiologist to successfully complete the infusion operation.

[0049] In another embodiment of the present application, referring to FIG1 , the three-way valve 10 is provided with a reader 16 for identifying the drug information of the syringe (not shown) at the second liquid inlet 12. The nipple of the syringe is attached with a radio frequency tag. When the syringe is connected to the second liquid inlet 12, the reader 16 identifies the drug information on the radio frequency tag, including but not limited to the type of drug, drug concentration, etc., forms a drug signal, and uploads it to the chip 20. When the drug is started, the second flow sensor 17 collects the drug flow information, including the drug injection time, drug injection dosage, and stop time, and uploads it to the chip 20. The chip 20 receives and processes the drug signal and the drug flow signal, and comprehensively forms a drug injection information signal, which is uploaded to the computer terminal system. The drug injection information, including but not limited to the drug name, drug concentration, drug injection time, drug injection dosage, stop time, etc., is displayed on the computer terminal system and recorded.

[0050] In other embodiments, the syringe is a conventional syringe without a radio frequency tag. The three-way valve 10 is also not provided with the reader 16. The computer terminal system only records the injection time, injection dosage, and stop time. If the second liquid inlet 12 is connected to a three-way threaded cap (no injection), the injection time, injection dosage, and stop time are still displayed, and the injection dosage is zero.

[0051] In another embodiment of the present application, the detection structure further includes a second pressure sensor (not shown) located at the second liquid inlet 12. The second pressure sensor transmits a pressure signal when the syringe is connected to the second liquid inlet 12. Upon receiving the pressure signal, the controller transmits a successful syringe connection message. When the syringe is connected to the second liquid inlet 12, the successful connection message is transmitted via voice or other means, providing positive feedback to the operator / anesthesiologist to guide the operator / anesthesiologist in successfully completing the infusion procedure.

[0052] In another embodiment of the present application, the controller issues a system startup message upon receiving flow rate information from the first liquid inlet 11 or the second liquid inlet 12, and pressure information from the liquid outlet 21. After the infusion system is connected, the system startup message is issued via voice or other means to provide positive feedback to the operator / anesthesiologist, thereby guiding the operator / anesthesiologist to successfully complete the infusion operation.

[0053] The operation method of the infusion system is as follows:

[0054] 1. After verifying the patient's information, open the packaging bag of the three-way valve 10, take out the three-way valve 10, connect the first liquid inlet 11 of the three-way valve to the infusion device interface, connect the liquid outlet 21 to the peripheral intravenous puncture needle interface, and if injection is required, connect the second liquid inlet 12 to the syringe to build a complete intravenous infusion system.

[0055] 2. The circulating nurse prints the second identification code 141 , and the anesthesiologist double-checks the patient's name and medical record number before pasting it on the attachment area 14 of the three-way valve 10 .

[0056] 3. The anesthesiologist uses a barcode scanner to scan the second identification code 141 and the first identification code, and the anesthesiologist manually matches the information of the two in the computer terminal system, or the software automatically matches the first identification code and the second identification code 141, and the voice announcer announces "information matching".

[0057] 4. Start intravenous fluid delivery. The first flow sensor 18 receives the intravenous fluid flow rate information and transmits the flow rate signal to the chip 20. The pressure sensor 19 senses the peripheral venous pressure, generates a venous pressure signal, and transmits it to the chip 20. The chip 20 transmits the flow rate and pressure information to the mobile computer terminal. When the mobile computer terminal receives the flow rate and venous pressure signals, the voice announcer announces "Smart Three-way Connection Enabled." As the fluid is delivered, the mobile computer terminal collects and records the injection information, including injection time, dosage, and stop time.

[0058] For example, when the computer mobile terminal only receives the liquid flow rate signal, or only receives the venous pressure signal, the computer terminal system prompts "the smart three-way is not turned on".

[0059] 5. If a syringe is connected to the second liquid inlet 12, the reader 16 identifies the drug information on the syringe nipple radio frequency tag, including drug type and concentration, and generates a drug signal, which is then uploaded to the chip 20. When drug injection begins, the second flow sensor 17 collects the injection signal, including injection time, injection dosage, and stop time, and uploads it to the chip 20. The chip 20 receives and processes the drug signal and the drug flow rate signal, synthesizing the injection information signal. This signal is then uploaded to the computer terminal system, where the injection information, including drug name, concentration, injection time, injection dosage, stop time, etc., is displayed and recorded.

[0060] 6. If the second liquid inlet 12 is connected to a common syringe, only the injection time, injection dose, and stop time will be recorded. If the second liquid inlet 12 is connected to a three-way threaded cap (no injection), the injection time, injection dose, and stop time will still be displayed, and the injection dose will be zero.

[0061] 7. After the intravenous infusion system is constructed, the chip 20 does not receive the venous pressure signal, and the chip 20 generates a warning signal and sends it to the computer terminal system. At this time, the computer terminal system continues to collect injection information and marks it as "illegal drug injection". At the same time, the chip 20 generates an audio signal and broadcasts "illegal drug injection, please connect the patient" through the voice announcer.

[0062] Furthermore, other fluid management options are provided:

[0063] 1. After the intravenous infusion system is built, the chip 20 receives the venous pressure signal but does not receive the liquid flow rate signal. The chip 20 generates a reminder signal and sends it to the voice announcer. The voice announcer receives the signal and generates a voice announcement "Please check the liquid".

[0064] 2. After the intravenous infusion system is built, the chip 20 receives a venous pressure signal that exceeds the set threshold, and the chip 20 generates a reminder signal and sends a voice announcer. The voice announcer receives the signal and generates a voice announcement "Please check the puncture needle".

[0065] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An infusion system, characterized in that: include: A three-way valve having a first inlet for receiving intravenous infusion liquid, a second inlet for receiving syringe liquid, and an outlet connected to the intravenous puncture needle; An information matching structure, comprising a first identification code for identifying identity information of the three-way valve and an identifier for identifying the first identification code; A detection structure, comprising a first flow sensor for detecting the liquid flow of the first liquid inlet, a second flow sensor for detecting the liquid flow of the liquid outlet, and a pressure sensor for detecting the pressure of the liquid outlet; The controller can obtain the identity information recognized by the identifier, can obtain the information detected by the first flow sensor, the second flow sensor and the pressure sensor and record them under the corresponding identity information items, and issue an alarm through the alarm device when the information is abnormal.

2. The infusion system according to claim 1, characterized in that: The three-way valve has an attachment area, the attachment area is used to stick a second identification code, the second identification code is used to identify patient information, and the identifier can identify the second identification code.

3. The infusion system according to claim 2, characterized in that: After receiving the identity information and the patient information, the controller sends a matching success message.

4. The infusion system according to claim 1, characterized in that: The controller acquires and records the information detected by the first flow sensor and the second flow sensor, including the injection time, the injection dosage, and the stop time.

5. The infusion system according to claim 1, characterized in that: When the controller receives the pressure information of the liquid outlet but does not receive the flow information of the first liquid inlet or the second liquid inlet, or when the controller receives the flow information of the first liquid inlet or the second liquid inlet but does not receive the pressure information of the liquid outlet, the controller issues an alarm through the alarm device.

6. The infusion system according to claim 1, characterized in that: The controller sends out an alarm through the alarm device when the pressure at the liquid outlet is greater than a preset threshold.

7. The infusion system according to claim 1, characterized in that: The alarm device is a voice alarm device arranged on the three-way valve.

8. The infusion system according to claim 1, characterized in that: The controller sends out system startup information when the flow information of the first liquid inlet or the second liquid inlet matches the pressure information of the liquid outlet.

9. The infusion system according to any one of claims 1 to 8, characterized in that: The three-way valve is provided with a reader at the second liquid inlet for identifying the drug information of the syringe.

10. The infusion system according to claim 9, characterized in that: The drug information includes drug name and drug concentration.

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