Medical devices for improving hygiene compliance

SANITIZING
CONTROL SYSTEM

Category

Digital Health
Medical
IoT

SERVICES

Full Cycle Product Design
Electrical engineering
Mechanical engineering
Firmware development

CURRENT STATUS

Clinical tests in Chicago, IL

The Challenge

Spread of COVID pandemic emphasized importance of good hand hygiene practices. Washing hands with water and soap or a sanitizer for 10-30 seconds reduce bacteria on hands by 100-fold.

However, recent data shows U.S. healthcare providers clean their hands less than half of the times they should during busy shifts.

Most U.S. hospitals still rely on direct observation to measure hand hygiene compliance, which is costly and labor-intensive. Can technology help?

THE OPPORTUNITY

AJProTech partnered with Microsensor Labs, leading medicine innovation center, to create a connected wristband called Sanibit TM to reduce the spread of infections and keep track of the staff hand sanitizing routines in hospitals.

AJProTech led hardware engineering efforts and helped throughout pilot production to deliver Sanibit to clinical tests.

THE SOLUTION

Sanibit is an IoT system that ensures clean hands and safer environment in hospitals and healthcare facilities.

Platform includes connected wristbands for each healthcare provider and wall mounted sensors in all patient rooms. Once the nurse enters the room, wristband detects if hand hygiene has been properly done and gives a gentle reminder.

Once hygiene data is uploaded to the cloud, Sanibit generates reports to both healthcare workers and Infection Control team.

SANITIZING_solution SANITIZING_solution

OUR APPROACH

When approaching a new product design, we aim to make technology “invisible” to user. We asked ourselves a question - how we can ensure that busy healthcare workers and hospital personnel do not change their typical routines? Our engineers worked closely with Industrial Designers to address that.

Product design for a wristband went through dozens of concepts to find the most compact solution. Final design uses a miniature electronics module with a replaceable rubber band.

Smart Drip Tray designed to serve as a sensor and drip tray for excessive liquid from sanitizer dispenser. During usability study, we identified low-profile design that can be easily mounted under soap dispensers.

Electronics design aimed for low power consumption. Wristband battery designed to last several days before recharging. Wall mounted sensor can work 12 months before internal battery pack needs to be swapped.

HOW IT WORKS

01.
Sanibit Wristband is a wearable Bluetooth device. Each healthcare worker picks up a charged wristband in the beginning of the shift.
02.
Smart Drip Trays are installed under soap dispensers. Motion sensor in the tray detect that someone is dispensing a sanitizer; wristband measures hand rubbing duration.
03.
Hygiene data from controllers is uploaded to the cloud.⠀ When workers enter a room, wristband gives reminder if they needed to clean their hands.

USABILITY STUDY AND SELECTED CONCEPTS

HARDWARE DESIGN - WRISTBAND

Sanibit wristband is a low-power IoT device with a rechargeable battery. It is comfortable and easy to wear, works on both wrists, and does not require any change to daily workflow.

Accelerometer data is used in motion algorithms to detect hand rubbing duration. Green lights encourage sufficient hygiene.

Sanibit connects to wall controllers in each room using Bluetooth Low Energy (BLE). Wristbands gives gentle vibration reminders when healthcare worker forgets hygiene.

We’ve designed a miniature PCB with vibration motor, BLE interface, rechargeable battery, and pogo pins embedded in compact enclosure

HARDWARE DESIGN - SMART DRIP TRAY

Sanibit Smart Drip Trays are installed under existing soap or alcohol dispensers in every room. Low profile battery-powered design is compatible with most dispensers and does not require any wiring.

Drip Tray communicates to wristbands wirelessly through BLE interface when workers enter a room. Drip Tray notifies wristband that sanitizer / soap has been dispensed. Then, motion sensor in the wristband tracks the hand hygiene duration.

Drip Tray communicates to wristbands wirelessly through BLE interface when workers enter a room. Drip Tray notifies wristband that sanitizer / soap has been dispensed. Then, motion sensor in the wristband tracks the hand hygiene duration.

We designed system with WiFI and BLE radio, Time-of-Flight motion sensor, and high capacity battery. Enclosure serves as drip tray for excessive soap. Enclosure is easily mounted and can withstand high mechanical impact

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HARDWARE DESIGN - CHARGING STATION

When you charge your smartwatch or Fitness tracker, you use individual cable with wall power adapter. But imagine a hospital with 20 nurses who need to charge their wristbands - storing and finding 20 outlets for charging become tricky.

To solve that, we designed a charging station to store and charge multiple wristbands at once. Hospitals have very limited space in reception and changing areas. Thus, we’ve designed a compact solution that can be wall mounted or placed on a countertop.

Each station can charge 8 wristbands from single USB cable. Magnetic connector ensures proper and easy placement. Name tags may be added next to each wristbands to easily find your wristband.

PROTOTYPING

Sanibit became a timely response for increasing awareness of proper hand hygiene in healthcare facilities. Microsensor Labs partnered with multiple hospitals to conduct clinical trials.

Sufficient number of systems were manufactured and integrated into daily operations in hospitals. Systems had a warm reception and recommended for future use.

Time-of-Flight motion sensors were calibrated for accurate triggering. We solved a problem of false triggering from direct sunlight by using special protective covers

PILOT AND MARKET VALIDATION

Sanibit became a timely response for increasing awareness of proper hand hygiene in healthcare facilities. Microsensor Labs partnered with multiple hospitals to conduct clinical trials.

Sufficient number of systems were manufactured and integrated into daily operations in hospitals. Systems had a warm reception and recommended for future use.

Our partners are exploring mass adoption of systems nationwide in hospitals, nursing houses, and even at restaurants.

Impact

Sanibit has successfully passed pilot program and clinical tests in The Louisville Hospital 8 Surgical ICU several other participating hospitals in Chicago, IL.

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Our partners at Microsensor Labs secured funding from National Institutes of Health (NIH) and Small Business Innovation Research (SBIR).

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Microsensor Labs received a U.S. patent “SYSTEM AND METHOD FOR PREDICTING HYGIENE OPPORTUNITY AND HYGIENE ACTIONS FOR HYGIENE PROTOCOLS”

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Contact us

United States
Los Angeles, CA9410 Owensmouth Ave,Chatsworth, CA 91311
Taiwan
ManufacturingNew Taipei City120 Nan Shi St.
Europe
EngineeringComing soon