Millar_Mikro_Tip

Cardiovascular Pressure Catheters

Millar Mikro Tip Pressure And Pressure Volume Catheters.

Millar Catheters are pressure measurement devices which consist of a sensing element, (a patented ultra miniature semi-conductor gauges designed specifically for catheter transducer applications) placed at the distal end of a catheter, at the source of the pressure being measured.

Essential for any study where accurate analyses of pressures and pressure waveforms are required, Mikro-Tip catheters provide signals suitable for storage on high frequency response data acquisition and computer systems. Millar Mikro-Tip Catheters have a wide range of applications in cardiology.

Mikro-Tip catheter pressure sensors have exceptional thermal stability and linearity, with negligible hysteresis. These pressure sensors provide a high signal-to-noise ratio and good resolution of low-level sounds and pressures. Over-pressures of several thousand mmHg will not damage the sensor, and their low mass make them insensitive to acceleration forces and catheter whip.

Mikro-Tip catheters offer many advantages over conventional fluid-filled external transducer systems, with additional benefits specific to different applications. However, benefits common to all types of use are:

Higher Frequency Response
Mikro-Tip catheters provide a frequency response of flat to 10 kilohertz, whereas fluid-filled systems typically have a useful frequency range of 0 to 20 hertz because of their low resonant frequency (25 to 35 Hz).
No Motion Artefact
Motion Artefact is an unwanted noise on a pressure signal caused by the movement of the catheter.
Position Independence
By measuring pressure through a sensor placed directly at the source, Mikro-Tip catheters are not affected by external factors. Mikro-Tip catheters provide an exact representation of the physiological pressure changes taking place in the body NOT of the physical characteristics of the measurement system.
Ease of Use
With Mikro-Tip catheters a simple three-stage process of monitor zeroing, monitor gain adjustment, and transducer balancing is all this is required.

PCU 2000 Dual Channel Patient Isolated Pressure Control System
Approved for Human Use. Single sensor Mikro-Tip^® catheters are ideal for high fidelity pressure measurement when a lumen is not required. These catheters range in size from 2 to 7 French, in length from 65 to 120 cm, and in material (either woven Dacron or polyurethane). The smaller French sizes are suitable for paediatric cardiology or other small vessel access.

Cardiovascular Mikro-Tip^® Pressure-Volume Catheters
For human use. Pressure-Volume Combination catheters integrate pressure and volume measurements. Pressure is measured with the Millar Mikro-Tip® sensor while volume measurement is achieved through the use of electrodes. Through an impedance technique, these electrodes detect changes in the volume inside of a cavity such as the left ventricle. Pressure and volume can then be measured continuously. Such data may be used to generate pressure-volume loops, calculate intracavity vector-volume, measure conductance, determine segmental conductivity of the blood/fluid, and a host of other parameters. Evaluation of these parameters, in turn, can provide assessment of fundamental mechanical properties such as cardiac performance. A diverse mix of standard models for human and animal use, with or without pigtail, variable sensor and electrode configuration and ranging in size from 1.4 to 7 French, are available as standard catalogue models.

Cardiovascular Single Sensor Mikro-Tip^® Pressure Transducer Catheters
Approved for Human Use. Single sensor Mikro-Tip^® catheters are ideal for high fidelity pressure measurement when a lumen is not required. These catheters range in size from 2 to 7 French, in length from 65 to 120 cm, and in material (either woven Dacron or polyurethane). The smaller French sizes are suitable for paediatric cardiology or other small vessel access.
Dual Sensor Mikro-Tip^® Catheters

Approved for Human Use. Mikro-Tip® catheters with two pressure sensors are suitable for high fidelity pressure gradients such as across a valve or between chambers. Dual sensor Mikro-Tip® catheters range in size from 2.5 to 7 French, in length from 120 to 135 cm, and in material (either woven Dacron or polyurethane).
Disposable Angiographic Catheters

Approved for Human Use. Disposable Mikro-Tip® angiographic catheters feature a single pre-calibrated pressure transducer, high-flow angiographic lumen, braided polyurethane catheter material and open-end pigtail for use with a guide wire. These catheters, 105 cm in length, have a pressure range of –50 to +300 mmHg and are available in 5 and 6 French sizes. Disposable 6 French models offer use of a 0.028" guide wire and an injection flow rate equal to or greater than 20 ml per second (H2O @ 1200 psi). The 5 French sizes allow use of a 0.025" guide wire and an injection flow rate of equal to or greater than 16 ml per second (H2O @ 1200 psi).
Ultra miniature Pressure Catheters

Non clinical Animal use only. These ultra miniature pressure catheters were developed for measuring pressures in small laboratory animals. In these models, the catheter body is smaller than the tip sensor to allow flexibility and to minimally obstruct the vessels or valves through which it passes. With sensor tips Ranging in size from 1.4 to 3 French and working lengths from 50 to 140 cm.

MPVS™ Ultra miniature Single Segment Pressure-Volume Conductance System.

Animal use only. The introduction of the first pressure-volume catheter in Millar’s 1.4-2.0 French series revolutionized the possibilities for conductance research in small transgenic animals, allowing ventricular pressure and volume measurement in subjects as small as 16 grams. The ultra miniature pressure sensor and smaller flexible catheter body minimize obstruction in small vessels and valves. These catheters are available with one pressure sensors and four platinum electrodes.

Single Pressure Sensor

Dual Sensor

Angio Catheter

Pressure Volume Catheters

MPVS PV Conductance System

Single Pressure

PCU-2000

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