Different types of syringe and peristaltic pumps are utilized in the medical industry to extract, replace and treat blood in a wide range of applications.
One example is dialysis machines, which mix and monitor dialysate fluid that’s used to remove unwanted waste products from a patient’s blood. The dialysate fluid also works to restore a patient’s electrolytes and minerals to proper levels. Blood pumps pull blood from the access side of the dialysis catheter and return the blood at the same rate of flow. Consistent and accurate flow is important to ensure that the filter will not clot.
For these applications, actuators and precision lead screws are required to drive the pumping action, and to open/close the fluid valves. The challenges & requirements for these applications include:
- Consistent actuator feedback to ensure volumetric efficiency and cycle
- Low rotary backlash / direct drive
- Output shaft radial loading.
Haydon Kerk Motion Solutions has a successful track record providing stepper motor linear actuators and precision lead screws (in conjunction with rotary hybrid stepper or DC motor/gearmotors) to instrument developers in the medical industry.
Component lifetime and reliability are of paramount importance to instrument developers. HKP’s stepper motors and the drive train are specifically designed to run reliably for the life of the instrument, eliminating electromechanical risk factors and unnecessary downtime for repair or exchange.
