Innovative Technologies

What is cap-ONE?

Optional capnography for both intubated and non-intubated patients with cap-ONE cap-ONE logo

cap-ONE is Nihon Kohden's unique mainstream CO2 sensor for both intubated and non-intubated patients. The ultra compact sensor and unique adapter provide accurate measurements and reduce the burden on the patients.
Intubated cap-ONE  Non-intubated cap-ONE  cap-ONE mask

cap-ONE overcomes the disadvantages and maintains all the advantages of mainstream sensor for the optimal capnography.
The table showing cap-ONE's advantages

Uniqueness of cap-ONE

A new class ultra compact and highly durable sensor
cap-ONE employs advanced miniaturization of infrared absorption spectroscopy system and its sensor has achieved an extremely light and small size with a weight of 4 g with a dead space of 0.5 mL. Also, by using an anti-fogging membrane, neither motor nor heater is required.
cap-ONE is highly durable, withstanding a drop test of 100 falls from a height of 2 m, a flex test of 5,000 times with a 400 g load, and a water test with submersion to a depth of 1 m for 30 minutes (IPX7).

Innovative features - Anti-fogging membrane
cap-ONE uses an original transparent film with an anti-fogging membrane. It forms a smooth layer of water which allows stable transmission of infrared light without irregular reflection. This technology eliminates the need for heaters, and reduces the power consumption and weight of the sensor.

Without anti-fogging membrane With anti-fogging membrane inside the airway
The illustration of usual membrane The illustration of anti-fogging membrane
The photo of usual membrane The photo of anti-fogging membrane

The following diagram shows both signals and reference are affected by the mist of the nebulizer but CO2 measurement is not affected.
The diagram showing both signals and reference are affected by the mist

Two measuring methods

Quantitative method (TG-980P):
The quantitative method cancels the effects of factors that cause inaccurate measurement, such as deterioration of the light source, dirty windows on the sensor, and water drops in the airway adaptor. It can provide reliable measurement even under highly humid conditions.
The diagram of quantitative method


Semi-quantitative method (TG-920P):
The semi-quantitative method assumes inspired CO2 as 0 mmHg so it does not require user calibration. It requires few parts, which lessens the possibility of malfunctions.
The diagram of semi-quantitative method

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