Delivery safety ensuring method and wearable medical system using the method
A delivery safety ensuring method for a wearable delivery system, comprising two major steps to double-ensure that an instruction sent from a smart device trying to control the wearable delivery device reflects the true intention of the user. The first step is to restrict a delivery amount instructed by smart device within a pre-determined range using an alternative physical key, and the second step is to require authentication using an independent authentication tool through proximity communication. Both steps of the safety ensuring method require no open network access, solving the problem of the smart device being vulnerable to program failure and external viruses so as to enhance delivery safety, especially against malicious external attacks from open network. A wearable delivery system using this method is further provided.
1. A delivery safety ensuring method for a wearable medical system, comprising the following steps:
1) selecting and inserting an alternative physical key into a wearable medical device by a user, wherein the alternative physical key is carrying a proper operating mode configured to restrict a delivery amount within a pre-determined range;
2) determining, via a processor, whether a delivery instruction given by a smart device is within the pre-determined range of the selected physical key by the wearable medical device;
3) requiring, via the processor, for authentication of the delivery instruction or a suspension instruction from the smart device by the wearable medical device;
4) using an authentication tool independent of the smart device to send an authentication information to a receiver set in the wearable medical device by the user, wherein the communication between the authentication tool and the receiver is a proximity communication without any direct physical contact being needed;
5) establishing, via the processor, a secure communication with the smart device by the wearable medical device if the requirement for authentication is satisfied;
6) instructing, via the processor, an alert system set in the wearable medical device to give a feedback to the user if the requirement for authentication is satisfied wherein if the delivery amount is out of the pre-determined range, the processor will decline to establish a secure communication between the smart device and the wearable medical device; and
if the delivery amount is within the pre-determined range, the processor requests for a further safety ensuring measure using the authentication tool independent of the smart device; and
if the requirement for authentication is unsatisfied, the processor will decline to establish a secure communication between the smart device and the wearable medical device.
2. The delivery safety ensuring method for a wearable medical system according to claim 1 , wherein,
the authentication tool is a portable item without Internet access or a movement made by the user.
3. The delivery safety ensuring method for a wearable medical system according to claim 1 , wherein,
the receiver is a built-in sensor set in the wearable medical device.
4. The delivery safety ensuring method for a wearable medical system according to claim 3 , wherein,
the receiver is a magnetic sensor, and the authentication tool is a portable item made of or containing magnetic material.
5. The delivery safety ensuring method for a wearable medical system according to claim 3 , wherein,
the authentication tool is a portable item made of or containing metal material, and the receiver is one of a capacitive sensor, an inductive sensor and an eddy-current sensor.
6. The delivery safety ensuring method for a wearable medical system according to claim 3 , wherein,
the receiver is a linear accelerometer, and the authentication tool is a linear movement made by the user which is one or a combination of jumping, squatting and tapping the wearable medical device through clothing.
7. The delivery safety ensuring method for a wearable medical system according to claim 3 , wherein,
the receiver is a gyroscope sensor, and the authentication tool is a twisting movement made by the user.
8. The delivery safety ensuring method for a wearable medical system according to claim 3 , wherein,
the receiver is an ultrasonic receiving sensor, and the authentication tool is a portable item with an ultrasonic transmitter.
9. The delivery safety ensuring method for a wearable medical system according to claim 1 , wherein,
the receiver is a built-in RFID reader or tag, and the authentication tool is a portable item with a corresponding RFID tag or reader.
10. The delivery safety ensuring method for a wearable medical system according to claim 1 , wherein,
the receiver is a built-in NFC reader or tag, and the authentication tool is a portable item with a corresponding NFC tag or reader.
11. The delivery safety ensuring method for a wearable medical system according to claim 1 , wherein,
the alert system set in the wearable medical device comprises a buzzer and a vibration motor.
12. The delivery safety ensuring method for a wearable medical system according to claim 1 , wherein,
the operating mode comprises one or a combination of a basal rate delivery mode, a programmable basal rate delivery mode, a bolus dose delivery mode, a delivery suspension mode, a system locking mode and a wireless control mode.
13. A wearable medical system, comprising,
a delivery device comprising a processer, a receiver, an alert system and alternative physical keys with respective operating modes;
an authentication tool independent of a smart device;
wherein the wearable medical system uses the delivery safety ensuring method according to claim 1 .
14. A wearable medical system according to claim 13 , wherein,
the alternative physical keys further carry pre-determined setting rules, configured to limit acceptable orders to changing system settings or executing special instructions from the smart device.