890A: in-situ Large Animal Apparatus

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The 890A Large Animal Test Apparatus and its variants (891A and 892A) enable physiology researchers to test and measure muscle responses in the hind limbs of dogs, sheep, swine and larger animals in-situ or in-vivo.

This apparatus is available in three configurations: isometric (890A and 892A) and isometric/isotonic (891A). The isometric configurations measure force-frequency and muscle fatigue, while isometric/isotonic measures force-frequency, fatigue, eccentric contractions, force-length, force-velocity, work and stiffness.

The apparatus provides accurate limb fixation, an animal footplate, a force sensor and/or motor and linear translators to adjust the footplate position with respect to the animal’s limb. It can be used with either hind limb.

The tri-axis positioner allows easy alignment of the footplate with respect to the animal and fine motor movement to adjust resting length or resting tension. The 890A or 892A apparatus come complete with a torque cell while the 891A is designed for use with a 309C or 310C Dual-Mode muscle lever (purchased separately).

  • apparatus designed to test in-vivo/in-situ muscle mechanics in large animals such as swine, dogs and sheep

  • flexible limb clamping, easily adjust location of clamp with respect to the animal’s hind limb

  • ability to test both hind limbs with ease, increase throughput

  • tri-axis positioner provides easy positioning of the footplate with respect to the animal

  • available in three configurations, isometric for simple mechanics (890A for dogs, 892A for swine) and isometric/isotonic for more complex protocols

  • fine translation stage on sensor allows accurate setting of resting tension

  • T-slot design provides flexibility to easily add additional apparatus and corrosion resistant materials used throughout

  • robust design

Variants

Large Animal Isometric/Eccentric Footplate Apparatus Variants:

891A Large Animal Footplate Test Apparatus: 309C/310C – Measure force-frequency, fatigue, eccentric contractions, force-length, force-velocity, work and stiffness with the addition of a 309C/310C Dual-Mode muscle lever

892A Swine Isometric Footplate Test Apparatus: Easily test in-vivo muscle tissue mechanics in swine and other large animals

Select References

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Specifications

Apparatus 890A 891A 892A
Thigh Cuff X Axis Movement [mm] 345 345 380
Thigh Cuff Y Tube Movement [mm] 298 298 410
Thigh Cuff Z Axis Movement [mm] 164 164 155
Footplate X Axis Stage Movement [mm] 220 220 220
Footplate Y Axis Stage Movement [mm] 220 220 220
Footplate Z Axis Stage Movement [mm] 220 220 220
Footplate Rotary Movement [degrees] 360 NA 360
XYZ Stage Mount Plate Y Movement [mm] 195 195 195
Stage Travel/Hand wheel Revolution XYZ [mm] 3 3 3
Weight [kg] 25 25 24
Dimensions [cm] 48W x 93L x 66H
Torque Transducer and Controller 890A 891A 892A
Maximum Torque [+N-m] 50 NA 50
Resolution [mN-m] 2 NA 2
Scale Factor [N-m/Volt + 2%] 5 NA 5
Bandwidth [Hz1] 300 NA 300
Risetime [ms2] 1.2 NA 1.2
Zero Drift [mV/°C] 0.2 NA 0.2
Non-linearity [±% Full Scale] 0.2 NA 0.2
Hysteresis [±% Full Scale] 0.2 NA 0.2
Non-repeatability [±% Full Scale] 0.05 NA 0.05
Offset Knob Adjustment Range [±mV] 50 NA 50
Gain Switch Ranges x1, x5, x10 NA x1, x5, x10
Safe Overload [±N-m] 75 NA 75
Connection3 4-pin Plug NA 4-pin Plug

1 = at -3dB point; 2 = 10-90%; 3 = Connector Part Number: Lemo FGG.0B.304.CLAD52

General Specifications 890A 891A 892A
Operating Temperature [°C] 0-40 NA 0-40
Power Required 100-240 VAC,
50/60 Hz. available
NA 100-240 VAC,
50/60 Hz. available
Power Consumption [W] 20 NA 20
Controller Weight [kg] 2.5 NA 2.5
Sensor Weight [g] 250 NA 2.5
Dimensions [cm] 21W (1/2 rack mount) x
25D x 9H (2U)
NA 21W (1/2 rack mount) x
25D x 9H (2U)

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