The Range of Odstock Stimulators
All are CE marked as Class IIa Medical Devices

Devices can only be sold to clinicians who have attended our
training courses

What's in a name

Distributors 

** New Addition - MS2 version 2 **
     link to ODFS link to 2 channel ODFS  link to Microstim 2 version 2  microstim 2, 2 channel exercise  four channel stimulator     


Odstock Dropped Foot Stimulator - ODFS
The Odstock Dropped Foot Stimulator is an electronic device, designed to assist people who have a dropped foot due to neurological damage to walk. By stimulating the common peroneal nerve at its most superficial point, passing over the head of the fibula bone, it is possible to cause dorsiflexion with degrees of hip and knee flexion. This is through excitation of the withdrawal reflex. If this is timed with walking using a foot switch worn in the shoe, walking can be significantly improved. The sensation of the stimulus is like ‘‘pins and needles’’ which the user soon becomes used to. The Dropped Foot Stimulator is about the same size as a pack of playing cards and is worn on a belt clip or in the pocket. Wires, worn under the clothing, carry the electrical stimulus to self adhesive skin surface electrodes on the side of the leg. A small foot switch is placed in the shoe under the heel. Stimulation can be adaptive to walking speed, starting and ending with heel rise and strike or can be for a fixed time, initiated by heel rise. An adjustable extension to the stimulation output after heel contact is provided to allow the foot to be lowered to the ground. Additionally the stimulator can be initialised by heel strike for controlled by the contralateral side. Ramping of the output allows fine tuning of the timing parameters and helps prevent calf spasticity due to sudden stretching of the Achilles tendon. The flexibility in operation allows the ODFS to be successfully used by subjects with a wide range mobility problems. The device can be used as an assistive aid or as a training device to strengthen muscles and improve voluntary control. Additionally, the device has a role in physiotherapy gait re-education allowing isolated components of the gait cycle to be practised under therapist control.
More information  		 ODFS3 picture
Specifications
All specifications +/- 10%
Output: asymmetrical or symmetrical biphasic voltage driven wave form.

Output amplitude: 15 to 100mA into a 1k ohm load with a asymmetrical biphasic output, 10mA to 70mA in symmetrical biphasic mode.
Frequency: 40 Hz. Pulse width: 3 to 350 micro seconds.
Output time: 0.5 to 6 seconds.
Extension time: 0 to 1.5 seconds
Ramping times: 0 to 4 seconds.
Battery. PP3, 9v.
Battery life: 2 to 3 weeks of average use for an alkaline battery. 3 to 6 days for a rechargeable battery.
Equipment type: Type BF.
  link to ODFS  link to Microstim 2 version 2   microstim 2, 2 channel exercise   four channel stimulator     go to top
 
Odstock Two Channel Stimulator

(O2CHS)


The Odstock Two Channel Stimulator is essentially 2 ODFS in a single box but with additional circuitry to allow the two stimulators to interact. It can be controlled by one or two foot switches with all the same control features of the ODFS with the addition of an adjustable delay following initiation on the second channel and variable stimulation frequency. The device has been used for bilateral dropped foot, dropped foot with push off by adding calf stimulation, dropped foot with knee flexion by addition of hamstrings, dropped foot with hip extension by adding gluteals, dropped foot and knee extension adding quadriceps, bilateral quadriceps, dropped foot with triceps for reducing associated reaction and assisted cough for high level tetraplegia.

More information 		2 channel ODFS, O2CHS

Specifications
 
All ± 10%
Output amplitude: 0 to 100mA into a 1k ohm load.
Frequency: 20 to 60 Hz.
Pulse width: 300 micro seconds
Output times: 0 to 6 seconds.
Delay: 0 to 2 seconds.
Ramping times: 0 to 4 seconds.
Extension times: 0 to 2 seconds
Battery. PP3, 9v.
Equipment type: Type BF.
  link to ODFS link to 2 channel ODFS    link to Microstim 2 version 2   four channel stimulator     go to top
 
The Microstim2 Exercise Stimulator. Version 1

(MS2)


The MicroStim2 neuromuscular stimulator is intended for the exercise of weak or paralysed muscle. It is designed to be simple to use with the minimum necessary user controls. The output stimulation intensity is ramped at the beginning and end of each cycle by pulse width modulation to produce a comfortable sensation. Powered by a standard 9V battery, this makes it ideal for use at home for regular exercise.

 {short description of image}[Version 1 - available while stocks last.] 
 Features the following Modes of operation (select mode with centre knob)
Mode  Frequency   Format  Possible Use  
 0  10Hz  CONTINUOUS  Setting up electrode positions and stimulation levels
 1  10Hz  ALTERNATE  Exercise mode for possible improvement in muscle fatigue resistance
 2  20Hz  CONTINUOUS  Setting up electrode positions and stimulation levels
 3  20Hz  ALTERNATE  Normal quadriceps exercise mode
 4  20Hz  SIMULTANEOUS  For simultaneous contraction of 2 sets of muscles e.g. hand stimulation
 5  40Hz  CONTINUOUS  Setting up electrode positions and stimulation levels
 6  40Hz  ALTERNATE  Normal common-peroneal exercise mode
 7  40Hz  SIMULTANEOUS  For simultaneous contraction of 2 sets of muscles
 8 & 9      Reserved for future expansion - currently default to mode
 
  link to ODFS link to 2 channel ODFS  microstim 2, 2 channel exercise   four channel stimulator     go to top


Microstim 2 version 2

MS2v2 


A development of the MS2 two channel exercise stimulator but with 'all new' software and enclosure. There are 9 preset modes which can be selected by the front panel push button switch. At the request of our clinicians there is an overlapping mode where one channel is held on while the other ramps up to the level set by the front panel knob. The first channel then ramps down, stays off for a period and then ramps up again before the second channel ramps down to nothing. Other modes are detailed below. Read a write up on the development and see graphs of the output envelopes in the April 2003 newsletter. 		MS2v2 in the hand
New MS2v2 'in the hand'
   
MS2v2 top label
Label shows modes without the need to look them up in the instructions		 {short description of image} 
Compare the old and the new
 
 Standard Modes available on the MS2v2

The mode is selected by the up/down pushbutton switch in the centre of the front panel.      
Mode Freq Format Possible Purpose
0 40Hz Alternate  Slow ramp version of mode 6 - may avoid triggering spasticity
1 40Hz Simultaneous  Slow ramp version of mode 7
2 20Hz Continuous  Setting electrode position and stimulation level
3 20Hz Alternate  Exercise mode for two opposing muscle groups.
4 20Hz Simultaneous  Exercise mode for one or two muscle groups to move together.
5 40Hz  Continuous  Higher frequency version of mode 2
6 40Hz  Alternate  Higher frequency version of mode 3
7 40Hz Simultaneous  Higher frequency version of mode 4
8 40Hz  Overlapping  Use to maintain joint position with two seperate muscles
9 20Hz  Overlapping  Lower frequency version of 9 - minimise fatigue.
Please get in touch with us if you would like a version of this stimulator with different modes.    
 		  
   
   
  link to ODFS link to 2 channel ODFS  microstim 2, 2 channel exercise  link to Microstim 2 version 2     go to top
 
The Odstock 4 channel stimulator

O4CHS


The Odstock Four Channel Stimulator is a neuromuscular stimulator intended for the exercise of weak or paralysed muscle. It is designed to be simple to use with facilities to vary exercise parameters. The output can be ramped at the beginning and end of each cycle to give a comfortable sensation and prevent stretch induced spasticity. Output can be continuous or alternating (Two channels can alternate with two channels, 1 channel with three channels or four channels against a rest period). Powered by a standard 9V battery, the unit is intended for home use to allow regular exercise. An optional accessory allows control of the stimulators pulse width and exercise cycle using a foot pedal.

More information see Newsletter Dec97 - New stimulators		 {short description of image} 
   
Specifications
 
(All specifications to +/- 10%)
Output amplitude: 0 to 115 mA into a 1k ohm load.
Frequency: 12 - 50 Hz.
Wave form: Passively asymmetrically charge balanced.
Pulse width: 100 - 450 micro seconds.
Period time: 12 - 60 seconds On time: 1 - 12 seconds
Ramp time: 0 - 9 seconds Equipment type: Type BF
         
  link to ODFS  See 2 channel drop foot microstim 2, 2 channel exercise  link to Microstim 2 version 2  four channel stimulator  
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