Due to the inconvenience of the conventional intravenous drip frame, the piggyback intravenous drip frame is developed to ensure better mobility of the patient. This invention applies PID control techniques and an inverted-pendulum system to build up a reliable system, which can facilitate patient mobility and ensure patient safety with compensating the inclination angle of the piggyback intravenous drip frame based on the motion information of the patient. Therefore, the reduction of blood returning and the balance control of the piggyback intravenous drip frame can be achieved.

The drip frame is an essential tool for supporting intravenous drip. Currently, two types of frames are commonly used: one is arranged at the front end of a bed body, and the other is attached to a wheelchair. However, the body of a wheel-type drip frame is too long and has a considerable weight, which is quite inconvenient with mobility consideration. 
By means of a long-term observation for the behavior mode of drip frame, this invention provides a carryable and automatically balanced intravenous drip frame based on the safety, which suggests that the patient with a drip frame can move ubiquitously. No matter subjects go out of bed, go to the toilet, eat or go up and down the stairs, who can move freely and increase the quality of life.
This invention contains a carrying unit and a supporting unit wherein the supporting unit is a vest worn on the body and has a lightweight skeletal joint structure with a carrying unit on its shoulder for hanging the dripping frame. The carrier unit is provided with angle monitoring and compensation controlling with adaptive algorithms. Therefore, this invention can avoid the intravenous drip’s blood flowing back problem. It is suitable for tilting forward or tilting backward. Its flexibility is high. In addition, it can be adjusted for different users.

本系統結合背負單元以及載體單元兩大技術，提供一個背負式點滴架是產品化的標的；使用的市場，在於一般病房以及門診注射室。其中，一般病房可提供之對象包含需要持續施打點滴，但意識清楚想要下床走動、用餐等之病患；另外，大部分仰賴輪椅行動，到目的地後，可以少步行動之點滴使用者。此外，門診注射後，仍需留院觀察的病患也是使用對象；茲將技術應用對象的範圍，整理如表2。