Drug delivery device

• Main Authors: HULLIG MARTIN, BURI, THOMAS, STREIT URSINA
• Format: Patent
• Language: Chinese; English
• Published: 12.09.2023
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

The invention relates to a drug delivery device with an electric brushless DC or stepping motor. A novel motor control method uses a micro-step technique in combination with transposing the stepping motor and reversing the rotor for a small number of micro-steps per delivery cycle. This method has the effect of maintaining the elasticity of the drive train behind the plunger in a relaxed state after completion of the delivery cycle, thereby providing better control of the movement of the rotor. Step loss can be avoided for a wide range of friction or velocity conditions, thereby improving the accuracy of drug delivery and making tracking rotor position and detecting step loss be much better parameters for detecting clogging or clogging. The increased controllability allows a significant increase in motor speed for delivery, resulting in optimal energy efficiency while still ensuring reliable operation. 本发明涉及一种具有电动无刷DC或步进马达的药物递送装置。一种新颖的马达控制方法随每个递送周期使用微步进技术结合针对小数量的微步来过运转步进马达的换位并将转子反向。这种方法所具有的效果是，在完成递送周期之后，使柱塞后面