Medijet. Active nCPAP interface

Product benefits

Low noise level
Pressure trigger and spontaneous breath detection without additional sensor
Flexible adapter for positioning prong and mask
Patented flextubes for easy application
Based on the Benveniste valve with volume reservoir

In this video we shortly demonstrate how to correctly use the medin Medijet generator. Medijet supports spontaneous breathing of neonatal patients – premature as well as term newborn. Based on the Benveniste principle Medijet provides an adjustable constant positive pressure in the patient´s airway applicated through short binasal prongs and masks. Benefits: - Increase of FRC and improvement of lung compliance - Decrease of WOB - Less noise level Pulmonary gas transport can be improved and atelectasis prevented by nCPAP.

Quiet and comfortable

Medijet is our active nCPAP generator and is used on the medin devices medin-NC3, medinCNO, medinCNOmini and medinSINDI. In addition, the interface can also be combined with several special ventilators.

Medijet is quieter than comparable nCPAP
generators (Kirchner L, Wald M, Jeitler V, Pollak A. In vitro comparison of noise levels produced by different CPAP generators. Neonatology. 2012;101(2):95-100. doi:10.1159/0003295581) and features a high level of comfort.

Benveniste valve

Medijet actively generates CPAP pressure using a modified Benveniste valve (Benveniste D, Berg O, Pedersen JE. A technique for delivery of continuous positive airway pressure to the neonate. J Pediatr. 1976;88(6):1015-1019. doi:10.1016/s0022-3476(76)81066-92), that is, directly in the generator, and thus the continuous positive pressure in the patient’s airway without an additional valve in the NIV device. As a result, Medijet is connected to the device with only a single-tube system. This facilitates handling and patient positioning.

Pressure trigger without additional sensor

Based on the precise and fast pressure measurement, Medijet enables the innovative pressure trigger MediTRIG. The spontaneous breathing and obstructive as well as central apnea are recorded without an additional sensor, such as an abdominal sensor.

In the medin devices, the pressure trigger is used in the ApneaCPAP and SNIPPV mode and thus opens up a broad range of types of non‑invasive respiratory support

The breathing gas flow set flows via the Benveniste valve into the pressure chamber of the Medijet (red). Pressure builds up there and supports the patient with pressure and flow. During inspiration, the pressure in the patient’s airway decreases, as does the resistance. The breathing gas always flows in the direction of low resistance.

During expiration, the expiratory flow (blue) from the patient meets the incoming fresh gas flow (red). This is redirected out to the environment in whole or in parts. The patient can exhale via the expiration opening and this results in a gas mixture consisting of expiration flow and fresh gas flow.

The amount of breathing gas which is not needed by the patient may escape via the expiration opening (red, narrow). The airway pressure is measured directly in the Medijet via the proximal pressure measurement and transmitted to the therapy device.

A Breathing gas inlet with nozzle
B Open gap of the Benveniste principle
C Opening to the pressure chamber
D Pressure/volume chamber
E Expiration open

Accessories

Medijet is secured to the patient’s head with the user-friendly medin bonnet. Medijet is applied to the nose of the small patient using short binasal prongs or soft, gentle nasal masks.

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Fußnoten

In vitro comparison of noise levels produced by different CPAP generators.

Kirchner L, Wald M, Jeitler V, Pollak A. In vitro comparison of noise levels produced by different CPAP generators. Neonatology. 2012;101(2):95-100. doi:10.1159/000329558

Link to article

INTRODUCTION

Minimization of noise exposure is an important aim of modern neonatal intensive care medicine. Binasal continuous positive airway pressure (CPAP) generators are among the most important sources of continuous noise in neonatal wards. The aim of this study was to find out which CPAP generator creates the least noise.

METHOD

In an experimental setup, two jet CPAP generators (Infant Flow® generator and MediJet®) and two conventional CPAP generators (Bubble CPAP® and Baby Flow®) were compared. Noise production was measured in decibels in an A-weighted scale [dB(A)] in a closed incubator at 2 mm lateral distance from the end of the nasal prongs. Reproduction of constant airway pressure and air leak was achieved by closure of the nasal prongs with a type of adhesive tape that is semipermeable to air.

RESULTS

The noise levels produced by the four generators were significantly different (p < 0.001). Values measured at a continuous constant flow rate of 8 l/min averaged 83 dB(A) for the Infant Flow® generator with or without sound absorber, 72 dB(A) for the MediJet®, 62 dB(A) for the Bubble CPAP® and 55 dB(A) for the Baby Flow®.

CONCLUSION

Conventional CPAP generators work more quietly than the currently available jet CPAP generators.

A technique for delivery of continuous positive airway pressure to the neonate.

Benveniste D, Berg O, Pedersen JE. A technique for delivery of continuous positive airway pressure to the neonate. J Pediatr. 1976;88(6):1015-1019. doi:10.1016/s0022-3476(76)81066-9

Link to article

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