MBF3D Probes

Needle probes are amongst the most versatile designs. They can be used for surface measurements, inserted into tissue or used for single vessel measurements. The coPact design also lends itself to measurements in tissues with restricted access, e.g. teeth, conjunctiva and where micromanipulation is required.

Probes can be fixed in position over tissue with a normal laboratory manipulator by claPing onto the black acetal shank.

Deeper measurements are possible by inserting the probe tip into tissue bulk, for which finer needles are suitable (P4, P4s, P4sd). The finest needles can be inserted directly with the application of gentle pressure. Larger needles can still be used although it may be necessary to puncture the tissue first.

The use of specific probe holders can extend the application range of needle probes further still. Wet stick probe tips can be used to aid adhesion to moist/ mucosal surfaces. Dental putty can be used to create an individual probe holder for tooth measurement. Angled needle probes can be used to access hind teeth.

Although laser Doppler is not usually advocated for assessment of flow in single vessels, there is a role for the technique in the assessment of flow changes in small individual vessels. Moor manufactures a range of probe holders to aid this measurement.

P3 and P3b Blunt Needle End Delivery Probe A hypodermic stainless steel tube of external diameter 1.5mm. The length is normally 10mm to 80mm. Separation of fibres is 0.5mm. A P3b is as a P3 with a fibre separation of 0.25mm

P4 and P4s Blunt Needle End Delivery Probes A hypodermic stainless steel tube of external diameter 0.8mm. The length is normally 30mm or 80mm. Separation of fibre centres is 0.25mm. The P4s uses a 26-gauge needle (external diameter 0.46mm).

P5 and P5b Blunt Needle 90 degree End Delivery Probes P5a probes are hypodermic stainless steel tubing with angled tip providing right angled delivery for ease of access to some measurement sites such as the oral mucosa and teeth. The P5a has a tube diameter of 1.5mm and P5b has a tube diameter of 0.8mm. The length of the probe can be specified between 30mm-80mm and the right angle extension length between 5mm-10mm. The P5 has a fibre centre separation of 0.5mm and P5b has a fibre centre separation of 0.25mm.

P7b Blunt Needle End Delivery Probe Multiple Collector Fibres The large area probe uses 8 collecting fibres positioned in a ring, diameter 2mm, around the central light delivery fibre. The P7b is a stainless steel tube of diameter 3mm and standard length 30mm. Tube length up to 120mm available. The light collecting area for P7 type probes is approximately 10 times that of a standard probe. Note: See P7a.

Endoscopic probes enable internal investigations of blood flow in tissue beds such as colon, bronchus and urethra. The probes are available in a wide range of diameters to fit the biopsy channel of most endoscopes. All are made from a flexible yet tough nylon sleeving.

The finer diameter probes, although generally more delicate, can be used with some naso-gastric tubes: the tip of the n.g. tube is removed to allow an end viewing probe to protrude for measurement.

The standard length for all endoscopic probes is three metres. Longer lengths can be supplied and are particularly useful for larger animals (e.g. horses)

P6a and P6b Endoscope End Delivery Probe An end delivery endoscope probe with flexible nylon sleeving. The P6a has 2.1mm diameter sleeving and P6b has 1.35mm diameter sleeving. Both probes have steel tips, 6mm length, surrounded by the nylon sleeving. The P6a has a fibre separation of 0.5mm and the P6b a fibre separation of 0.25mm. Standard fibre length is 3m. Also available are single fibre probes with detachable slave connectors.

P6L Rectal Side Delivery Probe The probe tip is a 7.94mm O.D silicon tube formed into a 30 – 70mm loop. The 2.77mm O.D nylon tube that constitutes the optical lead is sheathed in the silicon tube to a distance of 450mm +/- 30mm from the optical aperture. Light is delivered at a right angle to the measurement area via a metal tube bent at a 90º. The DP6L is a side delivery probe especially designed for measuring rectal blood flow. Standard length probe to optic connector is 3m.

Low profile designs are either used where access is difficult (e.g. oral mucosa) or to reduce application pressure if the probe is to be covered by bandages. Various designs are available, including the titanium disc probe and the near flat silicon probe.

P8c Low Profile Right Angle Delivery Suturable Probe The P8c titanium disc probe has a 2.1mm OD flexible nylon sleeve with a titanium disc probe head. The probe head is 8mm OD and 2.5 mm high. The head has 4 suture holes drilled in it to provide stability during measurements. Light is delivered at a right angle from the probe head via a central window.

P10M100ST & P10M200ST Master/ Single Fibre probe system Master probes are twin fibre designs, acting as a link between the monitor and the single fibre probe tip. The Master probe connects to the Slave via an optical in-line connector (order code PCP).

Master/ Single Fibre probe system offers a number of advantages over more conventional probe designs. The benefits include;

1. Small diameter probe tips (down to 250micron) for minimally invasive measurements.

2. Wide choice of single fibre probes for diverse measurements. Just connect a new probe tip for a change to muscle, cerebral, gastric, organ or endoscopic (etc.) applications. This represents an economic solution if you intend to saPle a number of different tissues.

3. Single fibre probes are supplied with re-usable, detachable connectors. Probes tips can be sterilised easily for re-use or treated as disposable (see P10d, P10k & P10s-TCG). Moor Instruments can also supply the materials for you to construct your own single fibre probes.

4. For longer-term measurements the Master can be disconnected to leave the single fibre in position between measurement periods.

P10d Single Fibre probe NOT SUITABLE FOR HUMAN USE. The P10d is a single plastic fibre, sleeving 0.5mm diameter, with a detachable optic connector. The fibre can therefore be treated as a disposable item or sterilised for re-use. Use with P10M200ST.

P10s-TCG Single Fibre probe NOT SUITABLE FOR HUMAN USE. A P10s-TCG is a single glass fibre probe diameter 0.26mm OD with a fixed connector. Use with P10M100ST.