Obstetrics - Harmac > 자유게시판

Nicolet Dopplers provide unmatched accuracy and reliability in fetal heartbeat detection and are the primary choice of most OB/GYNs. Most of our Dopplers provide interchangeable obstetric probes: 2 MHz for bigger ladies or BloodVitals SPO2 later in pregnancy, BloodVitals SPO2 3 MHz as a general function probe and a 2 MHz waterproof probe for underwater labor and delivery. Most units additionally provide vascular probes for monitoring blood movement. Broad-beam technology and a large probe face provide a novel methodology of rapidly locating the fatal heartbeat - no must angle the probe! Exclusive SSD™ know-how ensures the best possible sound. Optional recharger and digital display. Waterproof 2 MHz and vascular probes are additionally accessible. The worldwide favorite Doppler. Full-featured system with constructed-in speaker to amplify foetal heartbeat. Complete with all accessories: BloodVitals SPO2 Headset, rechargeable batteries, recharger, carrying case and BloodVitals wearable audio CD. Waterproof 2 MHz probe and vascular probes are additionally out there. The Pocket-Dop three is a beneficial assist in detecting pregnancy and monitoring the fetal heartbeat.

The constructed-in speaker amplifies fetal coronary heart sounds to reassure the expectant mother. The Pocket-Dop three options interchangeable probes: BloodVitals SPO2 the 3 MHz probe is for early fetal heartbeat detection and the 2 MHz probe for use in later pregnancy or real-time SPO2 tracking with bigger patients. The small "footprint" of these probes enables them to be easily angled down behind the pubic bone for optimum detection of early fetal heartbeats. A portable, economical ante partum monitor (VersaLab APM or BloodVitals SPO2 APM2 for twins) for performing non-stress tests. It is a small lightweight (4.1 lbs) APM system that includes an built-in printer. Both screens will be battery or line operated. Arrange is simple with special strip belts, shade-coded connectors and straightforward-load paper. Total freedom of motion! Perfect in the working/supply room. One-hand monitor oxygen saturation operation - controls are on the probe. Unit stays exterior the sterile area. Digital readout with auto-correlation. Recharging stand mounts on a counter, wall, IV pole or roll-stand. Vascular probes are also accessible. A Sturdy portable system with straightforward-to-use controls. Includes digital readout with autocorrelation. Recharging stand BloodVitals SPO2 mounts on a counter, wall, BloodVitals SPO2 IV pole or roll-stand. It’s excellent for semi-everlasting mounting in any exam room. Waterproof 2 MHz probe and vascular probes are additionally obtainable.

Certain constituents in the blood affect the absorption of mild at varied wavelengths by the blood. Oxyhemoglobin absorbs mild extra strongly in the infrared region than in the crimson region, whereas hemoglobin exhibits the reverse behavior. Therefore, highly oxygenated blood with a excessive concentration of oxyhemoglobin and a low concentration of hemoglobin will tend to have a excessive ratio of optical transmissivity in the pink area to optical transmissivity within the infrared area. These alternating parts are amplified and then segregated by sampling units working in synchronism with the pink/infrared switching, so as to offer separate indicators on separate channels representing the red and infrared light transmission of the physique structure. After low-cross filtering to take away signal parts at or above the switching frequency, each of the separate alerts represents a plot of optical transmissivity of the body construction at a selected wavelength versus time. AC part brought about solely by optical absorption by the blood and varying at the pulse frequency or coronary heart rate of the organism.

Each such sign also includes an invariant or DC element associated to different absorption, BloodVitals SPO2 similar to absorption by tissues other than blood within the physique structure. AC and DC components of those indicators. IR" LED drive 24 are related to LED's 16 and 18 respectively. 26 is organized to actuate LED drives 22 and 24, and hence LED's sixteen and 18, in accordance with a predetermined alternating sequence interspersed with darkish intervals. During each such dark interval, the timing unit 26 deactivates the LED drives and therefore deactivates each LED's. Thus, the LED drives and LED's present alternating crimson and infrared illumination, whereas the timing unit periodically interrupts this illumination to offer the darkish intervals. 34 can be supplied. Preamplification means 34 includes an operational amplifier 36 defining an inverting enter node 38, an output node 40 and a non-inverting input node forty two connected to ground. 46 samples the amplifier output sign at preamplifier output node 40 and offers a sequence of samples to every sign processing channel.

While LED sixteen is providing pink mild, the amplified sign obtained from preamplifier 34 is routed by means of change forty six to pink sign processing channel 48. Conversely, when infrared mild is being emitted by diode 18, the amplified sign is routed to IR sign processing channel 50. During darkish intervals, while neither diode is operative, the amplified output signal is not routed to both sign processing channel. Each of sign processing channels 48 and 50 may embrace usually conventional elements for changing the periodic sign samples supplied by way of change 46 into a substantially continuous, smoothed signal, eliminating spurious elements ensuing from the switching process itself and figuring out the AC and DC parts of the smoothed sign. 10 Hz, and is arranged to attenuate signals above that frequency. 52 is linked to each signal processing channels forty eight and 50, the microprocessor being arranged to receive digital values from the first and second analog to digital converter of every channel.