Change the appearance of the blood pressure monitor

The word "tensymetry" in the Webster's Dictionary of law no explanation, but it is well known in the medical field. By Tensys Medical Systems Corporation tensymetry is a use of the machinery, electrical and software engineering's proprietary composite technology. Use these three powerful techniques, you can in the operating room on the patient's heart beat blood pressure for precise, continuous, real-time and non-intrusive measurement.

This technology produces fruit is the company's T-line Tensymeter products.

The product line is the latest in March last year launched the TL-150 (Figure 1). As a result of the exercise tolerance progress, worn on the wrist of the patients with their first generation TL-150 has greatly improved. It's in the radial artery blood pressure measurement.

According to the main views of narcotic scholars, this development is revolutionary.

"Will change our future TL-150 measurement of blood pressure. "College of the University of Texas at Houston Anesthesiology, Associate Professor, Dr. Peter Szmuk, said that" the results are displayed in the known to the typical non-invasive blood pressure wrist highly suspect and BLS needs vigilance of clinical conditions (NIBP), T-Line and ALine (arterial line) Association between baseline is noteworthy. ”

A-line datum is FDA-approved standards (SP10: 2002, precision specification 4.4.5.2.B), by non-invasive blood pressure monitor advanced medical equipment Association (AAMI).

It specifies the average difference between the standard deviation is ±5 mm mercury column, not exceeding TL-150 of 8 mm Hg. Case studies further confirmed the infrequently used non-invasive blood pressure measurement of the importance of T-Line (Figure 2).

Blood pressure monitoring is each surgery on a routine basis, in determining the surgery on the hemodynamic status is critical.

In several heartbeat within possible rapid changes in blood pressure may indicate a potentially serious complications exist. As the basis of proprietary TL-150 tensymetry technology from radial on blood pressure monitoring, without using any external calibration source.

In determining the existence of a clear pulse, the medical staff in the General external use disposable pressure transducers.

And then the sensor Assembly in instrument dedicated bracelet. In addition to the patient's height and weight entered into the system, without further intervention.

Once the "zero paddle" be removed from the sensor, the system automatically compensates for atmospheric pressure, and began to define optimal radial artery pressure sensing position scanning operations.

Secondly, the system dynamically apply pressure on the hunt. This includes minor compression radial to determine the mean arterial pressure in patients, and the measurement of pressure.

Tensys design using the actuator in the patient's wrist movement sensor.

The sensor must be attached to the design of the bending hunting arms in a floating frame.

According to Tensys Medical Chief Technology Officer Stuart L. Gallant, TL-150 used patient radial artery as a system's main source of stress.

A proprietary algorithm for determination of diastolic pressure and systolic blood pressure. HD heartbeat waveform or show in the onboard monitor TL-150, or display on an external monitor.

Proprietary servo control algorithm makes automatic and continuous response TL-150 hemodynamic changes and significant changes to the blood pressure to be tracked without user intervention.

Through the appropriate message and audible alerts to any possible impact on patient safety, such as sudden loss of signal, informing the user.

University of Florida in Gainesville Anesthesiology, Assistant Professor, Dr. Gregory Janelle said: "the instrument description of previous launch there have been significant compared to TL-100.

It is more user friendly, requiring fewer steps to obtain accurate waveform, compared with the previous devices in a more unfavourable conditions continue to be monitored. ”

From Emory University in the United States (Emory University) Medical College and the University of Texas and the University of Colorado School of medicine narcotic scholars also TL-150 blood pressure monitor tested reports satisfactory results.

Tensys Chairman and CEO Mike Martin said: "with TL-150, customers have accurate and non-intrusive system that cannot normally use traditional wrist heartbeat and blood pressure to provide excellent control.

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TL-150 in 30 ~ 245 mm mercury range contraction of the heart and blood pressure measurements and 20 ~ 220 mm of mercury within the heart of diastolic blood pressure measurements.

The pulse repetition frequency measurement of capacity is specified in each minute 30 ~ 250 times of heartbeats.

Other specifications include 15 ~ 40 ° c temperature range and 120V, 60Hz, maximum 0.5A AC power output requirements.

(B-version rated AC voltage of 100 ~ 240V, 50 ~ 60Hz, maximum 0.8A) dimensions of 10 TL-150 inch wide × high × 9 x 8.5 inches deep, heavy 5 lbs.

Prototype design challenge

Early TL-150 prototype development with SLA castings, do not allow inspection tests.

Production tools manufacturers cannot produce the right product. (SLA is in rapid prototyping processes use a common file format. This file contains the original geometry data type).

Faced with the urgent sale time period, Tensys engineers very conventional and a step backwards, for rapid prototype and manufacture moulds for injection for exploration.

The company's work in Protomold, fast Jet mould process generates part time faster than any other company, 90% (Figure 3).