Peritron - Clinical Perineometer


Precision Perineometer for accurate assessment and super sensitive feedback.

Peritron is a hand-held clinical Perineometer intended for assessing the strength of pelvic floor (PF) muscles and teaching pelvic floor exercises. Both vaginal and anal sensors are available.

In operation, air pressure in the sensor caused by a pelvic floor contraction is transferred by a tube to the Readout Unit where it is displayed in several ways.

The new Peritron also has a Bluetooth Option* for -

Product Information

Use the following links to read detailed information on the new Peritron:

» Click here to download the complete Peritron Handbook (pdf, 600 kB)

 Assessment

Peritron displays the value of the contraction numerically in cm water (cm/H2O). (other units of measurement are available).The value is updated once per 0.6 second during the contraction.Peritron can recall the peak and average values of the contraction and also its duration. It also displays the gradient. Please refer to Quality of the Contraction below.

Normal values

Generally speaking, a vaginally measured contraction value of less than 20cm water indicates that strengthening pelvic floor exercises are advised.Normal anal resting pressures are around 50cm water. Cough usually adds 40 and squeeze 100. These correlate well with traditional measuring techniques using multi-lumen catheters.

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 Pressure Profiles

If successive readings are jotted down on a photocopy of the template provided in the Handbook a pressure profile curve may be sketched quickly and easily.

Many Practitioners find this picture of the contraction particularly useful for patient education.

Rdg cm water Rdg cm water Rdg cm water
1 20 4 22 7 10
2 32 5 25 8 1
3 29 6 17 9  

Readings taken during a contraction

Quality of the Contraction

A strong, sustained contraction is better than a brief, weak one. To help the clinician assess the quality of the contraction, at the press of a button Peritron will recall the peak and average readings as well as the duration of the contraction in seconds. It also displays the gradient.

A STRONG AND SUSTAINED CONTRACTION has similar PEAK and AVERAGE readings. Example vaginal contraction:

AN UNSATISFACTORY CONTRACTION typically has widely differing PEAK and AVERAGE readings. For example:

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 Feedback

For teaching pelvic floor contractions the display may be switched to 'progressing bars' that provide 'better-worse' feedback. The more bars that are lit, the stronger the contraction.

I I

I I I I

I I I I I I

weak
getting better
strong

Peritron's super-sensitive response picks up the first 'flickers' of a contraction. This feedback is really appreciated as patients generally need all the encouragement they can get.

Peritron's feedback display has 99 levels of that can be set, that is, degrees of difficulty.

The first, most sensitive range is for learning the exercises; the highest range will challenge the most accomplished pelvic floor athlete! But you can choose anything in between...

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 Sensors

The design of our Vaginal and Anal Sensors reflects our many years of experience designing and manufacturing medical products.

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 Clinical Studies

Those using Peritron in Clinical Research projects need to know its accuracy and repeatability.

The new Peritron is accurate to better than 1 cm H20 throughout the entire range.

With the previous model Peritron, for example, if the reading was 100 then there was a 95% probability that the true pressure is 100 and a 5% probability that it is 99 or 101.

The new Peritron measures to one decimal place (i.e. the scale is different) If it was compared in accuracy (on the same scale) with the old Peritron, it would be 100% accurate. In other words, it is accurate to better than 1 cm H20 throughout the entire range.

To our knowledge Peritron is the most accurate Perineometer currently available.

In practice, the force required to deform the sensor causes a slightly reduced reading. Providing you 'zero' the reading after insertion, the Peritron reading will be about two digits lower than actual applied pressure. (This characteristic affects every Perineometer in the world.) As the sensors are precision mouldings they are all exactly the same and so every reading you take will be about two digits short of the actual pressure indicated. Most regard this discrepancy to be meaningless in a clinical situation.

Collar

In clinical trials it is important to eliminate operator-induced artifacts as far as possible. For this reason we recommend the use of collar cat 2011 that provides repeatable depth of insertion with 100% certainty.

We are pleased to provide the results of our laboratory testing on request.

Inflation Optional for Vaginal (not Anal) Sensors

Most people use the vaginal sensors without inflation. However, a port is provided in the Peritron connecting tube that allows the sensor to be air-inflated by means of a syringe to provide a larger, firmer surface.

A standard inflation pressure of, say, 100 cm provides a constant base-line for readings. The technique used is straight forward:

NB: The anal sensor is not intended for inflation.

Single or Multi-Patient Sensors

For such a personal item, most people prefer their own sensor. The modest cost of these makes one-sensor-per-patient a viable clinical policy.

Single-user sensors require only a soap-and-water wash between uses.

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 Technical Specifications

Peritron 9300 is a microprocessor-controlled Perineometer that measures the strength of pelvic floor muscle contractions by sensing the pressure of air in a vaginal or anal sensor. The pressure is displayed either numerically in centimetres water pressure or as a multi-range analogue bar-graph.

Peritron is supplied in a moulded case with sensor, connecting tube and handbook. There are two versions:

Operating Range

Operating Range 0-300 cm water pressure
Accuracy
  • Measurement Error: < 0.5% Full scale at 25 degrees C
  • Pressure input Range: 0-300 cmH20
  • Display resolution: 1 decimal place (0.1cmH20)
Units Default Units: cmH20

Optional Units

  • Pounds/Square inch
  • milliBar
  • inch H20
  • cm H20
  • mm Mercury
  • inch mercury
  • KiloPascal
Units can be changed by authorized personnel
Numerical Readout
  • Large Liquid Crystal Display shows contraction strength in cm water pressure
  • Auto-zero function provides zero-based readings
  • Recalls Peak and Average readings, Duration, Gradient, Area under Curve
LCD Display
  • Number of Digits:- 4
  • Digit height:- 4mm
Analogue Readout Three-range bar-graph display for exercise feedback
Vaginal Sensor of 9300V
  • 26-28 mm dia, 55 mm long, active surface, 108 mm overall with thin wall, precision moulded medical-grade silicone rubber sheath
  • 80 connecting tube with port for optional inflation to 100cm water
Anal sensor of 9300A
  • 15-19 mm dia, 30 mm long, active area, 30 mm dia flange, 80 mm overall with medical grade silicone rubber sheath
  • 120cm connecting tube
Carry case Moulded 23 x 17.5 x 5 cm
Auto-off Function operates after four minutes of no change of pressure
Maintenance
  • 2 x 1.5V AA (lithium preferable) cells accessible to user
  • Battery life: No Audio - 40 hours, Continual Audio - 10 hours
  • Peritron requires no user adjustments or calibration
Connectors
  • Luer: 1/4-28 UNF Female
  • Analogue Channel: Plastics1 IEC-60601 Touchproof - model 37341
Warranty Peritron is warranted to be free of defects for 12 months

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