SOLUTIONS FOR INFUSION PUMPS Sensors and Switches
Application Note
Infusion pumps are used to deliver fluids, SOLUTIONS FOR medicines or nutrients to patients. Fluids INFUSION PUMP and medicines are delivered intravenously APPLICATIONS directly into the blood stream and nutrients are • Force Sensors delivered directly into the stomach. • Pressure Sensors – Board Mount BACKGROUND SOLUTIONS • Magnetic Position Sensor ICs Infusion pumps are medical devices Honeywell sensor and switch • Basic and AML Switches that deliver fluids, such as nutrients and solutions are designed to enhance the medications, into a patient’s body in performance and reliability of infusion • Subminiature Load Cells controlled amounts. They are commonly pumps, monitor the delivery of fluids, • Barcode Scan Engines & used in hospital intensive care units and medicines and nutrients to the patient Software wards, but smaller portable infusion and ensure the safe administration of the pumps are now being used to treat treatment to the patient (See Figure 1). patients at home. These devices offer significant advantages over manual administration of fluids, including the ability to deliver fluids in very small volumes, and the ability to deliver fluids at precisely programmed rates or automated intervals. There are many types of infusion pumps, including large volume, patient- controlled analgesia (PCA), syringe, enteral and insulin pumps. Some are designed mainly for stationary use at a patient’s bedside. Others, called ambulatory infusion pumps, are designed to be portable or wearable. Figure 1. Solutions for Infusion Pump Applications
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6 Force Sensors 1 MicroForce FMA Series; FSA Series, FSG Series, FSS Series, TBF Series, 1865 Series Pressure Sensors - Board Mount 2 Basic ABP Series; MicroPressure MPR Series (peristaltic pump applications) 1 Magnetic Position Sensor ICs 3 Hall-Effect: SS490 Series; SS360NT, SS360ST, SS460S; Micropower SL353 Series or Magnetoresistive: Nanopower Series 4 4 Basic and AML Switches V15W, ZD and ZW Series Sealed Basics; AML Series (Pushbutton and Rocker) 5 Subminiature Load Cells Models 31 and 11 6 Barcode Scan Engines & Software N670X & N660X Series; SwiftDecoder™
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FORCE SENSORS MicroForce FMA Series; FSA, FSG, FSS Series; TBF Series; 1865 Series
Functions/Actions TABLE 1. FORCE SENSORS FEATURES • Monitor the delivery of fluids, MICROFORCE FMA SERIES TBF SERIES medicines or nutrients to the patient • Amplified and temperature • Unamplified and temperature • Detect blockages and determine when compensated compensated the bag containing fluids or nutrients • Small form factor: 5 mm x 5 mm • Analogue (mV) output needs to be changed [0.20 in x 0.20 in] • Liquid media compatibility • Digital output (I2C/SPI) simplifies new Honeywell force sensors (see Table 1) designs are typically used within infusion pumps FSA, FSG, FSS SERIES 1865 SERIES to monitor and control the delivery • Wide variety of force ranges • Unamplified and temperature of fluids, medicines or nutrients to • Analogue or digital (I2C/SPI) output compensated patients. They are used in a non-invasive • Large coupling area simplifies • Analogue (mV) output manner and require no disinfection or integration within application • Liquid media compatibility sterilization before reuse.
APPLICATION NOTE | Solutions for Infusion Pumps | sensing.honeywell.com 2 PRESSURE SENSORS – MAGNETIC POSITION BOARD MOUNT SENSOR ICS Basic ABP/ABP2 Series; Hall-Effect: SS490; SS360NT, SS360ST, SS460S; Micropower SL353; or MicroPressure MPR Series Magnetoresistive: Nanopower Series
Function/Action Function/Action TABLE 3. MAGNETIC POSITION • Positioned in non-invasive location • Monitor placement of tube in pump SENSORS FEATURES if peristaltic pump is used to control cavity to ensure proper orientation SS490 pressure to the pneumatic pincher along with pump motor speed control • Quad Hall-effect design rollers Hall-effect position sensor ICs (see • Unipolar, bipolar or latching Honeywell’s board mount pressure Table 3) are designed to provide reliable, • Optimized slope compensation sensors (see Table 2) can be used to accurate output for smooth motor control • Wide temperature range monitor and control the peristaltic that reduces noise and vibration in the SS360/SS460 pump. Board mount pressure sensors machine’s motor assembly and improves • Fast response time provide high performance with low its efficiency. • High sensitivity drift over time. The small form-factor, • Latching magnetics The high reliability reduces repair and low-power consumption supports MICROPOWER SL353 maintenance costs, and its small size smaller portable designs and the digital • Energy efficient simplifies new designs. A thermally- simplifies the design of new equipment. • Non-chopper stabilized design balanced integrated circuit provides • Omnipolar sensing, activates with Honeywell board mount pressure consistent operation over the full either magnetic pole sensors are extensively used within temperature range. NANOPOWER SERIES medical equipment due to high levels of accuracy, sensitivity and reliability. • High sensitivity • Ultra-low power consumption TABLE 2. PRESSURE SENSORS - • Omnipolar sensing, activates with BOARD MOUNT FEATURES either magnetic pole BASIC ABP/ABP2 SERIES • Pressure range 5 mbar to 25 bar • Measures absolute, gage and differential • Amplified and temperature compensated • Analogue or digital (I2C/SPI) output • Supports liquids and dry gases MICROPRESSURE MPR SERIES • Pressure range 60 mbar to 2.5 bar • Measures absolute and gage • Amplified and temperature compensated • Digital (I2C/SPI) output (24-bits)
APPLICATION NOTE | Solutions for Infusion Pumps | sensing.honeywell.com 3 BASIC AND AML LOAD CELLS - BARCODE SCAN PUSHBUTTON SWITCHES SUBMINIATURE ENGINES & SOFTWARE
V15W, ZD, ZW Series; AML Series Models 31 and 11 N670X & N660X, SwiftDecoder™
Function/Action Function/Action Function/Action • Used as on/off operator controls, as • Monitor the weight of the IV bag • Ensure the right treatment is well as detection for covers, panels to determine the volume of fluid administered to the right patient by remaining and doors reading the barcodes on the IV bag Honeywell’s subminiature load cells (see Honeywell MICRO SWITCH basic and on the patient wrist band Table 5) are designed to fit into systems switches (see Table 4) can be used as Honeywell barcode scan engines, with limited space or tight clearances. on/off operator controls. Micro Switch modules and decoding software (see Constructed of rugged stainless steel basic switches can also be used as Table 6) are used in medical applications for precise measurements and excellent presence/detection for covers, panels to help improve patient safety and long term stability and reliability. These and doors acting as a fail-safe to enhance operational effectiveness. load cells are designed to eliminate or prevent switching the machine when reduce to a minimum the effect of off- Integrating Honeywell barcode reading doors/panels are ajar. Several series are axis loads. OEM solutions supports automated, sealed to protect against fluids. more accurate and faster tracking of MICRO SWITCH AML Series are TABLE 5. SUBMINIATURE LOAD patient and caregiver IDs, ensuring available as pushbuttons, key switches CELLS FEATURES the right medication, treatment and and rockers/paddles. They are often MODEL 31 AND 11 equipment match the right patient, and used in medical equipment as off/on • Accuracies of 0.25 % to 0.80 % full tracking and validating sample IDs and operator controls on the external face of scale associated information in the work flow. the equipment. • Offers load ranges from 150 g up to 1,000 lb TABLE 6. SCAN ENGINES AND TABLE 4. BASIC AND PUSHBUTTON • Miniature and subminiature size SOFTWARE FEATURES SWITCHES FEATURES • mV/V output N670X, N660X SERIES MICRO SWITCH BASICS • Stainless steel SCAN ENGINES • Small form-factor • Watertight, dust tight; leaded • Single/double diaphragm versions are sealed to IP67 construction • Wider operational temperature range • High current capacity • Available with SR or HD optics • Many different switch characteristics, • Parallel or MIPI interface actuators, and terminations • Low power consumption • Miniature and subminiature size SWIFTDECODER™ SOFTWARE • Lower power consumption • Faster barcode scanning AML PUSHBUTTONS • High accuracy and repeatability • Pushbuttons, paddles, rockers, • Reads damaged/poor quality key-actuated, and indicators within barcodes AML Series for coordinated panel • Omni-directional appearance • Less than 1.75 inch panel depth • Furnished lighted or unlighted
APPLICATION NOTE | Solutions for Infusion Pumps | sensing.honeywell.com 4 mWARNING WARRANTY/REMEDY IMPROPER Honeywell warrants goods of its INSTALLATION manufacture as being free of defective • Consult with local safety agencies materials and faulty workmanship and their requirements when during the applicable warranty period. designing a machine control link, Honeywell’s standard product warranty interface and all control elements that affect safety. applies unless agreed to otherwise by • Strictly adhere to all installation Honeywell in writing; please refer to your instructions. order acknowledgement or consult your Failure to comply with these local sales office for specific warranty instructions could result in death or serious injury. details. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace, at its option, without charge those items that Honeywell, in its sole discretion, finds defective.The foregoing is buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. In no event shall Honeywell be liable FOR MORE INFORMATION for consequential, special, or indirect Honeywell Sensing and Internet of damages. Things services its customers through a While Honeywell may provide application worldwide network of sales offices and assistance personally, through our distributors. For application assistance, literature and the Honeywell web site, it current specifications, pricing, or the is buyer’s sole responsibility to determine nearest Authorized Distributor, the suitability of the product in the visit sensing.honeywell.com or call: application.
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