Infusion syringe pump
First Claim
Patent Images
1. Infusion syringe pump comprising:
- a motor-gear unit and a threaded spindle for driving a linearly movable drive member,an injection syringe having a syringe plunger which for its actuation is in engagement with the drive member anda position detecting means for determining the position of the syringe plunger, said means having a position-defining element and a stationary absolute displacement pickup extending along the length of said threaded spindle,characterized inthat the position-defining element is rigidly connected to the linearly movable drive member, andthat the position-defining element along its path of movement corresponding to the displacement direction of the drive member is electrically coupled to the absolute displacement pickup.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to an infusion syringe pump which by means of a motor-gear unit drives a linearly movable drive member which is in engagement with the syringe plunger of an infusion syringe. According to the invention a position-defining element is connected only to the linearly movable drive member which actuates the syringe plunger of the infusion syringe. The position-defining element is functionally coupled to an absolute displacement pickup which is preferably constructed as linear potentiometer. By the control means according to the invention the absolute position of the syringe plunger can be determined.
100 Citations
5 Claims
-
1. Infusion syringe pump comprising:
-
a motor-gear unit and a threaded spindle for driving a linearly movable drive member, an injection syringe having a syringe plunger which for its actuation is in engagement with the drive member and a position detecting means for determining the position of the syringe plunger, said means having a position-defining element and a stationary absolute displacement pickup extending along the length of said threaded spindle, characterized in that the position-defining element is rigidly connected to the linearly movable drive member, and that the position-defining element along its path of movement corresponding to the displacement direction of the drive member is electrically coupled to the absolute displacement pickup. - View Dependent Claims (2, 3, 4, 5)
-
Specification