Application of active RFID in hospital and medical industry

In the dynamic working environment of hospitals or other medical institutions, real-time accurate positioning of important assets and personnel is often the key to the success or failure of diagnosis and treatment services. There are many examples in this regard, such as not knowing where the nearest clean infusion pump is, or when you need the most suitable doctor, but you do not know where it is in the hospital (not the doctor will always carry a mobile phone), etc. "Low visibility" often results in serious waste of time and resources. Specifically, a medical institution that lacks a highly clear asset and personnel management system will cause losses in the following areas:

Equipment loss: Every year, mobile devices usually lose nearly 20% due to misplacement, theft, etc.

Nursing staff, material supply and management and clinicians need to spend a lot of energy every day to find the appropriate medical equipment needed

Delay in patient service: When the required doctors or equipment cannot be found in time, other staff and wards will cause idleness and lead to the loss of the opportunity to rescue the injured

Failure to quickly find suitable equipment will result in the hospital having to reserve too many similar materials or temporarily rent additional equipment, most of which are either idle or inefficient to use

For those equipment that cannot be accurately located, preventive maintenance measures are often very untimely, which puts them at risk of overdue or excessive use

Threat to themselves and others caused by some patients leaving the ward or entering other areas without permission

In response to the above-mentioned objective needs of the current medical industry, the core concept of medical tracking solutions based on active RFID technology is "advanced technology, reliable products, and a platform for medical visualization." Based on the deep foundation in active RFID technology, Shanghai Xiupai Company provides complete visual solutions for assets, patients and staff for medical institutions at home and abroad to facilitate them to provide daily operating efficiency, reduce operating costs, and improve the level of medical services. In addition, the products and services provided by Shanghai Xiupai Company conform to relevant national and industry standards. These products and services can be seamlessly connected in the basic application system of medical institutions and can be obtained without changing the basic structure. Quick deployment and installation.

application solution

In actual use, the internal structure of the application system will be ever-changing, but the deployment method of the RFID system as a front-end data collection tool is almost the same: as shown in the figure below, electronic tags are generally attached to assets, articles, or personnel in various ways as their Unique identity identification, and may collect other relevant data (such as blood pressure, temperature, etc.) and upload it to the reader. The reader is transmitted to the back-end host system through wired or wireless means. After analyzing by a specific program, the relevant useful information is resolved to stimulate the application system. Follow-up control mechanism.

(1) Electronic label

In the medical industry, electronic tags are mainly used in the identification and monitoring of assets, personnel and medical items. In terms of item identification, it is mainly at the level of important medical assets and medical item packaging boxes, and the individual items will still be dominated by barcodes. In order to realize the real-time monitoring function, the personnel tags and most asset tags in the hospital are mainly active. In order to better display the outstanding advantages of active technology, we will apply active technology and passive technology to possible application needs Compare with respect to:

By wearing objects, there are mainly hospital staff tags, patient tags and asset tags.

1. Staff tags

Staff tags are generally card-shaped and worn on the neck. You can integrate high-frequency or low-frequency chips as access control according to actual needs, that is, the dual-frequency card we usually use. In some occasions with high security level, biometric technologies such as fingerprints and irises can be installed to strictly manage personnel access.

2. Patient label

The patient label is generally in the form of a wristband, which can be easily worn on the patient's wrist. The entire label adopts anti-tear technology, if it is forcibly damaged, it can actively alarm. Different patient categories need to develop different label packaging styles: general patients only need ordinary wristband labels for identification purposes only; some special patients also need to integrate pulse and temperature sensor devices, these data will carry out relevant medical treatment for the hospital Services provide help; all tags can also have an alarm function, add 1-2 emergency buttons on the surface of the tag, and can call for help at any time in case of emergencies. In addition, in the application of neonatal mother-infant identification, baby labels will adopt special clean packaging measures.

3. Asset tag

Asset tags often come in a variety of packaging styles, most of which are strip-shaped tags attached to medical devices or item packaging. Asset tags will vary according to different uses. In general, medical devices only need to bind common tags, which are only used for identification. Some assets that often need to be searched repeatedly need to be tagged with LED lights with flash function. Find specific assets to provide visual assistance.

Some items that are relatively "fragile" to the storage environment, such as vaccines and plasma, require active tags for real-time monitoring and continue to collect their temperature, humidity and other characteristics. If a certain feature exceeds the preset range, the active tag needs to make a special identification or alarm for the batch of items. Therefore, the asset tag of such materials needs to integrate sensor functions.

(2) Reader

Readers (also called information collectors) can be divided into base station readers and handheld readers according to the different ways of interacting with back-end database data.

Base station readers are usually distributed in some specific areas, such as corridors, doorways, aisles, etc., with fixed positions, as the basis for address information during background data analysis. The base station reader is connected to the antenna and searches for various data sent actively by the tag in the target area and transmits it to the background server through wired or wireless means. The reader and the antenna can be integrated into one, or the antenna can be placed externally according to the actual situation to adapt to the signal coverage in a specific environment.

Compared with base station readers, handheld readers are more flexible to use and can be carried by staff or bound to a mobile asset as a data forwarding station. Medical staff often need to conduct patrol inspections on the patients in their respective areas to ensure that the patients are in a normal state of care. In addition, it is extremely convenient to use a handheld reader to search for some important items in a large and spacious area (such as a warehouse).

(3) Application system

A hospital information system (HIS) that integrates RFID technology will significantly improve the efficiency of hospital asset operation and the level of medical services. From the current domestic situation, the application in the following aspects is relatively mature:

1. Medical monitoring

In many hospitals, there are a large number of emergency patients every day, especially in some large emergency centers. When there is a collective accident, a large number of wounded people will flood into the hospital. At this time, every minute and one second is extremely precious, and it cannot be tolerated error. However, the condition of each wounded person is very similar, which is easy to confuse, and the traditional manual registration is not only slow and has a high error rate, but it cannot be registered normally for critical patients. In order to be able to quickly confirm the identity of all patients, complete admission registration and carry out step-by-step first aid, the medical department urgently needs an automatic identification system that can provide the identity and condition information of the injured in real time. Only in this way can hospital staff be efficient and Carry out rescue work accurately and orderly.

The specific application method is to wear a wrist tag for each patient. When the patient receives diagnosis and treatment, the medical staff only needs to scan the tag information with a hand-held reader to know the first-aid items that need to be performed, such as whether infusion, injection drug name, The specifications, the treatment items that have been carried out, whether there are adverse reactions, etc., all the data will be displayed in front of the medical staff in less than one second, so that they can check the medical procedures and drug specifications, quantity, etc. The patient label can also store all the treatment process and drug injection records. Because RFID technology provides a reliable, efficient, and economical method of information storage and inspection, the hospital's rescue of emergency patients will not be delayed, and there will be no accidents caused by misrecognition of the wounded and resulting in medical accidents. In addition, in the case of transfer to hospital, the patient's data, including medical history, type of injury, proposed treatment method, treatment site, treatment status, etc., can be made into new labels and sent to the next treatment hospital. Since the input of all these information can be completed by reading the radio frequency tag at one time, unnecessary manual entry is reduced, and human-made errors are avoided.

2. Newborn logo management application

Newborn babies have similar characteristics and lack of understanding and expression skills. If they are not effectively marked, they will often lead to misidentification, and the result will bring irreparable impact to all parties. Therefore, in addition to the function of patient identification, the identification of the newborn must be matched at the same time. The mother and the baby are a pair. There is a management loophole in the identification of the baby alone, and malicious malicious exchange cannot be prevented. Therefore, it is best to carry out the associated identification of newborn babies and their mothers, and use the same coding to link the mother and child. Baby care is performed between hospital staff and mothers, and when they are transferred temporarily, both parties should carry out inspections at the same time to ensure correct mother-child pairing.

After the baby is born, the mother and baby should be identified in the delivery room, and both the mother and the baby should be transferred out of the delivery room before other patients are admitted to the delivery room. The delivery room must be prepared: two non-transferable RFID identification tapes for the mother and the newborn. The information on the label should be the same, including the full name of the mother and the number of the label, the gender of the baby, the date and time of birth, and what other hospitals believe can clearly match the mother and child. A device that can clearly take baby foot prints and mother finger prints. Appropriate forms record relevant information and foot print data. In addition to the identification, it can also fully guarantee the safety of the identification object. When someone attempts to steal the newborn from the hospital ward, the RFID identification device can detect it in real time and issue an alarm, and notify the security personnel of the latest location of the stolen baby.

3. Application of tracking and positioning of important assets and materials of the hospital

Some large medical centers generally have huge important medical assets and medical article storage bases. Hospital logistics personnel need to find suitable items from thousands of materials according to orders every day. The packaging of medical items is usually similar, but the use of internal items is very different. Therefore, the hospital logistics department usually needs a lot of manpower and resources to find and check these items. Moreover, the storage of medical items must be carried out in accordance with strict storage regulations. Misplacement events often occur during warehouse adjustments or item movements, resulting in large-scale damage to the items or serious drug accidents after circulation to the market.

The use of RFID tags with LED lights will make this search and verification process extremely fast and accurate, and the tags themselves can carry item-related information, which can increase the speed of the entire verification process by about 20 times. In addition, if some items are misplaced, the system can remind the warehouse manager to adjust the storage location through the blinking LED lights.

4. Application of tracking control of hospital contact history

Combined with the infectious disease epidemic tracking control system and medical institution contact history RFID tracking control system, each epidemic prevention and government unit can grasp the dynamic information of the entire processing process in real time and accurately, thus preventing the recurrence of nosocomial infection control problems similar to atypical pneumonia .

The infectious waste generated by home isolation and medical hospitals is tracked and controlled by the global garbage system at the same time when the health unit issues the home isolation notification, and the relevant units can immediately grasp the whereabouts of the garbage truck. It can be corrected immediately to prevent spreading everywhere. The most important thing is that transparent dynamic tracking information can eliminate people's doubts.

5. Management and application of pharmaceutical supply chain

In the medical field, a large number of errors in prescriptions, drug distribution, and medications occur every year, resulting in many medical accidents, a large number of lost time and legal proceedings. According to statistics, the losses caused in these areas are as high as 75 billion US dollars each year. Improving drug tracking methods may help hospitals save costs and curb the proliferation of counterfeit and shoddy drugs, which currently account for 10% of the global drug market.

Smart tags, or radio frequency identification (RFID)-by using such tags, physical objects can be identified at any point in the manufacturing and distribution process. RFID will play a key role in eliminating the usually slow and inefficient sales and distribution processes. It will help pharmaceutical companies prepare for the future and enable them to produce more diverse and more complex products in small batches. . It is also able to monitor medicines at all nodes in the supply chain, including accurate targeted bulk shipments, thereby helping pharmaceutical companies meet the increasing requirements of regulations.

From the above application situation, the application of RFID in the medical industry has surpassed the concept of rapid search and positioning. The hospital HIS system integrating RFID technology will integrate all the assets of the hospital into an organic whole, providing patients with fast, efficient and reliable service.

Program features

Long distance: it can be recognized within 80 meters, without manual access to swipe cards or passing in the designated area to recognize, to achieve full automatic recognition.

Large flow: extremely high anti-collision, using a variety of anti-collision solutions, can support more than 200 people or items at the same time.

It supports high-speed mobile reading, and the target person / item can move up to 200 km / h.

Two-way high-speed data exchange can be realized between the identification card and the card reader.

High reliability, working temperature -40 ℃ ~ 85 ℃, waterproof and impact resistant.

High anti-interference: There are no special requirements for various interference sources on site, and the installation is convenient and simple.

The global open ISM microwave frequency band does not require application and payment.

Ultra-low power consumption: safer and healthier for human body.

Required product introduction

1. Active electronic label card

2. Reader (Card Reader)

3. Handheld reader

Attachment: Brief introduction of the application status of RFID in the medical industry in various countries

All over the world, medical disputes have peaked in recent years. According to the World Health Organization, more than 10% of counterfeit drugs are in circulation worldwide, and more than 40% are in undeveloped countries. The amount of global counterfeit drugs exceeds 320 billion In addition, the problem of mismatched medicines has also plagued the medical industry. The United States has caused millions of dollars in losses each year, and the United Kingdom has caused 72,000 deaths every year. In 1987, 147 cases climbed all the way. By 2001, there were 406 cases. This figure remained high in 2005. The main reason is that the highest proportion is 24% of poor medical treatment, followed by surgery-related problems, accounting for 15% It is obvious that the solution to the problem of drug identification is urgently needed.

Regarding the current application of RFID in the medical field, drug identification has accounted for the largest proportion of applications. There is a so-called "three reading and five pairs" method of drug control in medical hospitals. The third reading means that the medicine is stored in the medicine box, medicine bag and medicine cup. The location must be confirmed. The five pairs are the comparison of the five data such as patient, time, drug name, dose, and route. These three readings and five pairs can be used to improve the accuracy of RFID.

For example, after a doctor issues a prescription, the prescription information is loaded into an RFID tag and handed over to the patient to receive the medicine. On the other hand, the doctor ’s prescription data will also be transmitted to the pharmacy at the same time. When the pharmacist dispenses the medicine, the RFID system on the medicine box will Proactively remind the correctness of the medicine. After the medicine is prepared, the RFID system on the counter will again compare whether the RFID label data of the medicine recipient matches the medicine.

In addition, in the prevention and control of counterfeit drugs, in addition to the barcode has been regulated to the packaging of drugs, the use of RFID as a drug production resume has also been designated by the US Food and Drug Administration (FDA) as a plan to combat counterfeit drugs, allowing the source and circulation of drugs The channel has been able to verify its legitimacy. The production history has practical application cases in the food industry, and it is not difficult to transfer to the medical industry.

RFID is also used as the control of special medicines. For some medicines, the reader on the medicine box has its restrictions. The approved label must be read before the medicine box can be opened. It has also been built with an RFID system. With RFID, it is possible to control and record the nurse ’s medication, and the patient ’s medication time will also be recorded in the RFID system, as a basis for future medical treatment or judgment evidence when a dispute arises.

The hospital built an RFID system to control medicines, but also extended it to other applications, such as asset management, waste tracking, and identification of surgical personnel. These applications have been introduced before. Let ’s look at cases from other countries. Possible applications of RFID in the medical industry.

In terms of application classification, drug control is still the main application of RFID in medical care in various countries, including South Korea, India, Italy, the United States, and the United Kingdom. South Korea is mainly used as a counterfeit medicine. Its Unimed Pharma uses RFID tags It is affixed to counter sales of medicines, and the estimated number of labels used is 1 million per year. South Korea ’s RFID anti-counterfeiting drug project has achieved results after it was launched in September 2004, and delivered 13,500 medicines in 8 weeks. Tracking and tracing, we will learn from this project and expand its application.

India ’s RFID drug control was born in response to Wal-Mart ’s request, led by Ranbaxy PharmaceuTIcal, India ’s second-largest pharmaceutical company, which built RFID tags on anesthetics and painkillers, using RFID to examine the preservation of drugs The deadline, when the use period is approaching, the reader will warn the manager to send the goods back to the manufacturer for destruction. Next, Ranbaxy PharmaceuTIcal is expected to integrate ERP, WMS and other systems.

The Spallanzani Hospital in Italy implants the RFID chip in the patient. This system is manufactured by VeriChip and integrated with the system. The chip volume is 11 mm, the frequency band used is 125 ~ 135KHz, and the patient's arm fat layer is implanted. The program can be used for 20 years. The program is approved by the US FDA to grasp the patient's medical records and medication situation. When an emergency occurs, the medical team can read the patient's condition for diagnosis and treatment.

RFID is widely used in the US medical industry. In addition to drug control, there are application examples for the management of baby rooms, the protection of demented elderly people, emergency room patients, blood transfusion bag control, and asset management. A special example is the flow control of dentures and specific tooth molds. The American system integrator Dental @ xUSA puts RFID chips into the tooth molds. During the manufacturing process, the dental specification will be recorded in the chip, each in the manufacturing process Steps such as using materials, colors, material batch numbers, manufacturing dates, etc., will be written into the chip. To protect the patient, when the tooth mold is completed, the data in the chip will be blocked and transferred to the smart card held by the patient Or other written carriers, as long as you hold the reader, you can read the tooth model data, so that you can effectively control the quality of dentures and tooth models.

Make good use of RFID to control blood transfusion and sample blood quality

France applies RFID to blood transfusion bags. In order to ensure that the quality is not easy to cause adverse changes, the blood must be at a certain temperature. Therefore, French Blood Agency Chemovigilance cooperates with system manufacturer Technopuce. This application must combine RFID chips with temperature sensors. After the blood is drawn, the chip and the sensor are attached to the blood bag. During transportation and storage, the temperature measured by the sensor will be recorded in the chip. Before the blood is used, it can be read through The device sees all the temperature records to judge the quality. Apart from France, KSW Microtec in Germany also uses the same system.

The United Kingdom also uses RFID on blood bags, but it is not used for blood transfusion, but for identification. Portsmouth General Hospital puts RFID tags on blood samples and blood bags to reduce the accident of blood bag accidents. The low labor cost can be reduced. Portsmouth General Hospital believes that if the United Kingdom can fully implement the mechanism, it can save 1 billion euros in costs every year. In addition, the British public hospitals also use RFID systems for asset management and change the past official paper operations. , Use RFID to manage the rental of various types of equipment.

Japan uses RFID for test tube observation. Hitachi designed the antenna on the silicon chip without the need for another antenna or chip. The RFID chip is placed in the test tube and placed in the test tube box. There is a reader at the bottom of the box layer. In order to scan the test tube situation and reduce the time of manual observation, the system is still in the experimental stage. The reading time of 96 test tubes is 20 seconds, and the goal will be 10 seconds.

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