Syringe with bi-directional plunger propulsion mechanism for micro-dosing syringe pump

• Main Authors: BOPP ALEXANDER, ANDERSON, NICHOLAS
• Format: Patent
• Language: Chinese; English
• Published: 15.09.2023
• 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

A syringe for a micro dosing syringe pump is disclosed. The syringe includes: a reservoir having an outlet port; a plunger having a track, the plunger being received within a portion of the reservoir; and a plunger driver including a gear connected to one end of the shaft and a pin located near an opposite end of the shaft, the plunger driver being received inside the plunger, the pin being located inside the track and engaging the track. In use, rotation of the gear in a first direction advances the plunger into the reservoir by a first distance as the pin travels in the track, and rotation of the gear in a second direction opposite the first direction advances the plunger into the reservoir by a further distance as the pin travels in the track. The design can prevent excessive dosing when the out-of-control motor breaks down. 公开了一种用于微配量给药注射器泵的注射器。注射器包括：储存器，其具有出口端口；柱塞，其具有轨道，该柱塞接纳在储存器的一部分内；柱塞驱动器，包括连接到轴的一端的齿轮和位于轴的相对端附近的销，柱塞驱动器接纳在柱塞内部，销位于轨道内部并接合轨道。在使用中，当销在轨道中行进时，齿轮在第一方向上的旋转将柱塞向储存器内推进第一距离，并且当销在轨道中行进时，齿轮在与第一方向相反的