Method for determining syringe parameters by a syringe pump, and apparatuses

A medical syringe pump comprising:

• a syringe receptacle for a syringe insertable therein, wherein the syringe comprises a syringe cylinder and a plunger being movable therein between a first end position and a second end position, wherein the plunger is connected to a plunger rod;
• a drive unit provided to move a slide of the medical syringe pump in motor steps, wherein the slide comprises a toggle for receiving a section of the plunger rod or connecting thereto and is arranged to be movable with a section of the slide, relative to the syringe receptacle, maximally between a first end stop and a second end stop;
• a counting device for counting a number of motor steps by which the toggle has been moved;
• one or more sensors or a sensor arrangement, arranged along a shifting path of the plunger or along a movement path of the slide;
• a control device, configured for prompting the drive unit to move the slide according to control instructions;
• and
• a storage device, wherein the control device is configured and/or prepared for executing or triggering a method for determining syringe parameters of the syringe inserted in the medical syringe pump using the medical syringe pump, the method comprising:
• moving the toggle by moving the slide of the medical syringe pump into a first position which corresponds to, or is associated with, a first known nominal volume of the syringe, and determining a position value of the first position by the counting device as a first position value;
• moving the toggle by moving the slide of the medical syringe pump into a second position which corresponds to, or is associated with, a second known nominal volume of the syringe, and determining a position value of the second position by the counting device as a second position value;
• determining a difference between the first position value and the second position value either as the number of motor steps by which the toggle has been moved in order to reach the second position starting from the first position, or by the position or positions determined by position detectors;
• and
• calculating another number of motor steps of the drive unit of the medical syringe pump per nominal volume unit of the inserted syringe based on the difference.