Mortara ELI 250 ECG Machine Key Membrane Silicone Keypad Blue and
White Keypad for ECG Machine
■ Product Describe
Mortara ELI 250 ECG MachineKey Membrane is an elastomeric membrane
keyboard designed for the ELI 250 ECG machine. It adopts a
multi-layer composite structure with integrated keys, circuits and
protective layers. The outermost layer is made of medical-grade
silicone material, with silk-screen anti-slip texture and character
logos on the surface. It can withstand alcohol wiping and
disinfection and has a long service life. The middle layer is an
insulating polyester film that separates the conductive contacts to
avoid short circuits. The bottom printed circuit board (PCB)
contains conductive silver paste circuits. When the key is pressed,
the contact closes and triggers the circuit signal.
The key action connects the PCB contact through conductive rubber
or metal shrapnel to generate a digital signal (such as ASCII
code). The signal is analyzed by the motherboard processor to drive
the display to update or execute the corresponding function (such
as starting printing).
The Key Membrane is the core input component of the device. It
contains various keys of the ECG machine, such as power on and off,
pause, switch mode, 26 letter keys and other functional keys. It is
very comprehensive and can enter patient information in great
detail, making it easy for medical staff to find patient
information.
■ Product Picture
■ Functions
1. Function control
Start ECG acquisition, pause or switch modes through dedicated
buttons (such as "Start", "STOP" and "AUTO" and etc).
2. Parameter adjustment
Supports various parameter adjustments, including but not limited
to gain (5/10/20 mm/mV), filtering (40/150/300 Hz), paper feed
speed (5-50 mm/s) and other parameters.
3. Menu navigation
Use soft keys (Soft Key) with screen menus to achieve complex
operations such as lead selection and storage management.
4. Safety confirmation
Some functions require a combination of buttons (such as
"Hold+Enter") to confirm to prevent accidental touches that cause
data loss or device misoperation.
■ Products Parameters
| Product Name | Key Membrane |
| Model | For Mortara ELI 250 ECG Machine |
| Button Type | Elastomer membrane keys with backlit character markings |
| Button life | ≥5 million operations |
| Operational force | 1.2N±0.1N (contact pressure) |
| Protection level | IP54 (dust and splash proof) |
| Operating voltage | DC 5V±5% (powered by the motherboard) |
| Interface Type | Flexible printed circuit board (FPC) connects to the mainboard,
supporting plug and play |
| Environmental adaptability | Operating temperature: 0°C to 40°C; humidity: 10%-90%
(non-condensing) |
| Color | Blue |
| Material | Silicone |
■ Application scenarios
The application scenarios of keyboard membranes are diverse. In
various medical occasions, they need to be used with keyboard key
functions to quickly operate the electrocardiograph and improve
clinical treatment efficiency, such as
Emergency room: Quickly start ECG acquisition and automatically
select high-quality waveforms with the "Best 10" algorithm.
Mobile medical care: Operate in an ambulance through a wireless
module (such as WAM), and the key design adapts to the bumpy
environment.
Medical record archiving: Quickly find patient information and
select one by one according to key information, which can save time
in flipping through medical records.
Remote consultation: When transmitting ECG data, the key triggers
the encryption protocol (such as 128-bit WEP) to ensure information
security.
