公开(公告)号：US3623474A

公开(公告)日：1971-11-30

申请号：US3623474D

申请日：1966-07-25

Applicant: MEDRAD INC

Inventor： HEILMAN MARLIN S ,  JONES DONALD

IPC: A61B6/00 ,  A61M5/145

CPC classification number: A61B6/504 ,  A61B6/481 ,  A61M5/14546 ,  A61M5/14566 ,  A61M2005/14553

Abstract: An angiographic injector system for producing a controlled rate of flow of injection fluid is described. The injector has a motor-driven piston for ejecting fluid from a syringe cartridge contained within a pressure jacket. The drive motor is operated in accordance with a command voltage which is proportional to the desired rate of flow. Sensing means detects the actual rate of flow and comparison means provides an error signal which controls the motor. Compensating means allow a single control system to operate the drive motor in conjunction with syringes of various sizes, and a tripping circuit halts the motor if the flow rate exceeds the selected rate.

公开(公告)号：US3701345A

公开(公告)日：1972-10-31

申请号：US3701345D

申请日：1970-09-29

Applicant: MEDRAD INC

Inventor： HEILMAN MARLIN S ,  KRANYS RUDOLPH J ,  JONES DONALD

IPC: A61B6/00 ,  A61M5/145 ,  A61M5/172 ,  B01L3/02 ,  G05D7/06

CPC classification number: A61B6/481 ,  A61B6/504 ,  A61M5/14546 ,  A61M5/14566 ,  A61M5/172 ,  B01L3/0227 ,  G05D7/0676 ,  Y10S128/01

Abstract: An angiographic injector control system for delivering a controlled volume of injection fluid is described. The injector has a motor driven piston for ejecting fluid from a syringe cartridge contained within a pressure jacket. The drive motor is operated in accordance with a command voltage corresponding to an incremental position of the injector piston, the command position signal also corresponding to the volume of fluid to be ejected from the cartridge. This command position voltage signal is compared to an actual position voltage to produce an error signal for operating the drive motor, whereby the syringe piston follows the position command signal. Volume selector means produce a volume signal corresponding to a desired maximum volume of fluid to be ejected; this volume signal is compared to the sum of the position command increments, producing a stop signal when the position command signal equals or exceeds the volume limit signal. Thus, the injector control system regulates the injection of fluid by sensing and controlling the position of the injector piston.

Abstract translation: 描述了用于输送受控体积的注射流体的血管造影注射器控制系统。 注射器具有用于从包含在压力套内的注射器药筒排出流体的马达驱动活塞。 驱动马达根据对应于喷射器活塞的增量位置的指令电压进行操作，指令位置信号也对应于从墨盒喷出的流体体积。 将该指令位置电压信号与实际位置电压进行比较，以产生用于操作驱动电动机的误差信号，由此注射器活塞跟随位置指令信号。 音量选择器意味着产生对应于要喷射的所需最大流体体积的体积信号; 该音量信号与位置指令增量的和进行比较，当位置指令信号等于或超过音量限制信号时产生停止信号。 因此，喷射器控制系统通过感测和控制喷射器活塞的位置来调节流体的喷射。