Page 5 of 23 BIOPAC Systems, Inc.
10166_Rev08 WWW.BIOPAC.COM 9.09.2019
Standard Dimensions (Common and Differential Sensors):
A – 1.8 mm (2 mo) or 2.2 mm (6 mo)
B – 5 mm
C – 8.5 mm (2 mo) or 9.3 mm ( 6 mo)
D – 2 mm (2 mo) or 3.5 mm (6 mo)
E – 6.5 mm
F – 9.5 mm (2 mo) or 12.4 mm (6 mo)
G – 4.3 mm (2 mo) or 4.7 mm (6 mo)
H – 1.5 mm
Note Custom sensor configurations may be ordered by contacting BIOPAC.
Reusable Sensor
The dual-channel reusable wireless sensor implant contains a small amplifier, sensor, and a battery
encapsulated in medical-grade epoxy with the Plastics1 MS-335 connector system.
Two of these leads are used for acquiring independent biopotentials with the third, central lead, being the
common reference electrode. No ground electrode is used in the Epoch system.
The Epoch reusable sensor must be used with corresponding Plastics1 MS-333, 3-channel electrode
pedestals. We recommend MS333/3-A/SPC, however, any MS333-compatible pedestal will work with the
Epoch reusable wireless sensor. Only the MS-333 electrode pedestal is implanted in the animal.
Note that it is very important to remove as much insulation from around the common electrode as possible.
The sensor is only available with a two-month battery life (2 mo) commonly used for adult mouse and rat
studies. The output gain of the sensor is typically set at 2000x during production (±1.0 mV range) for EEG
or ECG signals, but can be set to the following gains depending on customer needs: 800x (Status-Epilepticus
in adult animals, EMG), 400x (EMG). A Sensor Activator and Tester must be used to activate sensors on-
site. The reusable sensor can be deactivated at any time using the Sensor Activator and Tester.
Figure 5. Epoch Reusable Sensor with MS-333/3A Electrode Pedestal
Figure 6. Epoch Reusable Sensor on Carrier Board
To Next Page
Loading...