Buschmann Labor- und Medizintechnik

fetal pulse oximetry

mobile human sensor technology

pulse oximetry algorithm

blood glucose-sensor

mobile temperature measurement

mobile pulsoximetry

non-medical development

development for commission

Innovative High-tech Pulse Oximetry at BLM

The most reliable and ‘noise free’ pulse oximetry method is that of Transmission Pulse Oximetry. In order to adapt the already well established Transmission Pulse Oximetry to fetal monitoring, a sophisticated sensor had to be developed. In addition, entirely new algorithms had to be designed for processing fetal transmission pulse oximetry signals in the presence of troublesome motion artifacts. The combination of algorithms recently developed by BLM made it possible to perform accurate pulse oximetry even during the inevitable physiological movements of the fetus during delivery. The motion artifact rejection potential of the BLM pulse oximetry algorithms perform exceptionally well against MASIMO ® und NELLCOR ® and even outperform them. Thus we achieved an obstetric monitoring system which at last enriches obstetric surveillance with an unbiased technology.

Applicator (MTLD = Magnetic Torque Limitation Device)

The patent protected Applicator (or "MTLD") was developed by BLM for the optimal positioning of the sensor FOTOS for the Fetal Transmission Pulse Oximetry.

Algorithms for the measurement and analysis of noisy biosignals

Pulse oximetry signals face the problem of movement artefacts, which present major problems, especially during birth. BLM has put its energies into the development of algorithms to eliminate such movement artefacts and maximize the resolution of the time and amplitude measurements. These highly innovative algorithms are naturally applicable to other Pulse oximetry applications in which similar movement artefacts arise, (e.g. mobile patients, pilots, divers, firefighters, mountain climbers, athletes).

Techniques for Calibration of Pulse Oximeters at BLM

The calibration of the pulse oximetry technique for foetuses involves many challenges: access to the foetus is very limited, ethical considerations demand that the method be as discreet as possible. In particular, it is not ethically possible to measure the “true arterial oxygen saturation.” We have circumvented this problem with a half biological in vitro solution, which BLM have developed and patented.

The Problem and Its Solution - an Introduction

Here you can find further information on the topics of infant mortality, oxygen deficiency during labor, and Fetal Pulse Oximetry.

We are leading experts in Fetal Pulse Oximetry. Fetal Transmission Pulse Oximetry is exclusively represented by BLM.

Our other important fields of specialization include High Motion Pulse Oximetry (pulse oximetry in the presence of inevitable sensor movement) and Low Perfusion Pulse Oximetry (low modulation depth).

BLM has developed an "optical fetal scalp electrode" (FOTOS = Fetal Optical Transmission Oximetry Sensor) integrating optoelectronic elements into our fetal scalp electrode (millions of such sensors, developed by BLM are used each year in obstetrics).

This innovative, miniaturized sensor FOTOS provides true Transmission Pulse Oximetry for the continuous monitoring of the unborn child. This patent protected technology represents pioneering work, as clinical trials are proving every day.