Automated drug delivery
Automated drug delivery systems can greatly improve the safety and accuracy of medication administration, particularly in critical care and other high-risk medical settings. This process involves an automated system administering medication to a patient. Examples of automated drug delivery include:
Intravenous (IV) medication: Automated drug delivery systems commonly administer IV medications, particularly in critical care settings. These systems deliver a precise amount of medication over a specified period, reducing the risk of medication errors and adverse effects.
Patient-controlled analgesia (PCA): PCA is a method of pain management in which patients self-administer pain medication through an automated pump. The pump is programmed to deliver a specified dose of medication when the patient presses a button, allowing patients to control their own pain management while minimizing the risk of overdose or other complications.
Anesthesia: Automated drug delivery systems administer medication to patients during surgical procedures. These systems can be programmed to deliver a specific amount of medication at precise intervals, ensuring patients remain in a safe, controlled state of anesthesia throughout the procedure.
Chemotherapy: Automated drug delivery systems also administer chemotherapy to cancer patients. These systems deliver a precise dose of medication over a specified period, reducing the risk of side effects and complications.
Insulin pumps: Automated insulin pumps are commonly used to manage diabetes. These devices deliver insulin continuously, with the dosage adjusted based on the patient's blood glucose levels. This can help patients achieve better glycemic control and reduce the risk of diabetes-related complications.
Neonatal care: Automated drug delivery systems are used in neonatal care to administer medications to premature infants. These systems can deliver precise medication doses, which is particularly important for fragile newborns.
In addition, intravenous rehydration, where a patient is provided fluids directly to the bloodstream to quickly hydrate, in another potential use of automated delivery.
How the system works
Automated drug delivery systems are used with liquid medication and typically work as follows:
- The stored medication is connected to an infusion pump. The pump delivers a precise amount of medication over a specified period of time.
- An automated system programs the pump with the required dosage and timing parameters. The system may also monitor the patient's condition and adjust the dosage accordingly.
- The infusion pump connects and delivers the medication directly to the patient.
- The automated delivery system monitors the patient and adjusts the medication dosage as needed.
- The system may also include safety features, such as alarms and alerts, to notify healthcare providers of any irregularities or potential complications.
The role pressure sensors play in automated drug infusion systems
Pressure sensors are an important part of automated drug delivery systems. They provide a continuous feedback mechanism to control the flow of the drug(s) into the patient's body. Here is how pressure sensors work in automated drug infusion systems:
- A differential pressure sensor is placed in the infusion line, downstream from the pump. The pressure sensor measures the pressure of the drug as it flows through the infusion line.
- The pressure sensor sends continuous feedback to a control unit, which analyzes the signals and adjusts the pump's flow rate as needed to maintain the desired medication flow.
- The control unit can be programmed to deliver the drug at a specific rate or respond to changes in the patient's condition, such as blood pressure or heart rate. The pressure sensor ensures that the drug is delivered at the correct rate and pressure, improving the accuracy and safety of the drug infusion process.
- If the pressure sensor detects irregularities in drug pressure, it can trigger an alarm or stop the infusion to prevent harm to the patient.
Pressure sensors in drug infusion can greatly improve the accuracy and safety of drug delivery. By providing continuous feedback to a control unit, pressure sensors enable automated drug infusion, reducing the risk of human error and improving the efficiency of healthcare delivery.
Superior Sensor Technology’s Pressure Sensors for Drug Infusion Systems
Superior's proprietary NimbleSenseTM architecture is the first system-in-a-sensor integrated platform in the industry. This architecture combines the highest precision and dependability with application-specific features, using a highly differentiated advanced pressure-sensing system and the ability to integrate optional building blocks. Superior's solutions offer many benefits for automated drug delivery systems, thanks to the ND Series' unique feature set and capabilities.
ND Series
The ND Series extends the compensated operating temperature down to -20°C and up to 85°C, with a fast 2.25 ms response time and selectable bandwidth filters. The low-pressure differential pressure sensors in the ND line support pressure ranges as low as ±0.25 inH2O (±62.5 Pa) to as high as ±30 inH2O (±7.5 kPa).
Key features of the low-pressure differential sensors include:
- Multi-Range technology that allows one device to support up to 7 calibrated pressure ranges.
- Selectable bandwidth filter from 1 to 200 Hz.
- Exceptional zero stability.
- Extremely high accuracy within 0.05% of the selected range.
- 16-bit resolution (each selected range).
- Total error band less than 0.15% FSS.
By combining a sophisticated piezoresistive sensing element with amplification, ADC, DSP, and digital interface, the ND Series provides a level of integration that significantly simplifies design efforts. Advanced digital processing enables new functionality, streamlining system development and manufacturing while increasing product reliability.
The ND Series is more than a pressure sensor; it is a pressure-sensing subsystem that includes optional integrated closed-loop control, advanced digital filtering, and a 3-mode pressure switch.