TENS Unit for Arthritis Pain | Low-Impedance Joint Therapy | TOP-RANK
Dual-channel TENS stimulator for OA/RA management. Calibrated for 50-300 microsecond pulse widths to target small joint nerve recruitment. IEC 60601-2-10 compliant.
Product Overview
This hardware is a dual-isolated channel pulse generator engineered for chronic joint inflammation (Osteoarthritis and Rheumatoid Arthritis). Unlike generic TENS, this unit utilizes an MCU-controlled constant current output to maintain pulse intensity despite the high-impedance fluctuations typical of bony joint areas (fingers, wrists, ankles).
Key Features
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Small Joint Impedance Adaptation
Small joints like fingers have high surface resistance due to less soft tissue. Generic TENS units often cause "pin-prick" sensations when voltage fluctuates. Our circuit employs a high-speed feedback loop that stabilizes the mA output, ensuring the sensory threshold is maintained without reaching the pain threshold even as the electrode-to-skin contact varies. /
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Charge-Balanced Waveform Integration
To prevent skin irritation during 20-60 minute sessions, the output stage is calibrated to a zero-net DC component. Oscilloscope verification confirms that each positive pulse is neutralized by its negative counterpart within a 1 micro-Coulomb tolerance. This eliminates the accumulation of ions that leads to the chemical burns common in low-end DC-offset devices.
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Micro-Current Sensitivity (1mA steps)
Arthritic patients often have hypersensitive nerve endings. The digital potentiometer used in the hardware allows for 1mA increments instead of traditional analog dials. This provides a repeatable and documented clinical dosage, preventing accidental over-stimulation in RA flare-up scenarios.
Applications
Hand Osteoarthritis
Targeted stimulation for PIP and DIP joint pain reduction.
Knee RA Management
High-frequency gate control for morning stiffness relief.
Post-Infiltration Support
Adjunctive therapy to maintain mobility after corticosteroid injection.
OEM & Private Label
Production logic is split between our China facility (SMT and injection molding) and our Vietnam facility (Final assembly and kitting) to optimize duty and logistics.
- Kitting: Custom electrode configurations (butterfly or 2.0mm pin pigtail) included per distributor specification.
- Firmware : Pre-set modes can be locked to 2Hz/100Hz for clinical study compliance.
Certifications
Regulatory FDA 510(k), CE (MDR 2017/745), UKCA.
Audits : ISO 13485:2016 and MDSAP certified manufacturing sites.
Safety: IEC 60601-2-10 (Nerve Stimulator Safety) certified by Intertek/SGS.
FAQ
Q: Why does the device auto-shutoff when treating small joints?
A: This occurs if the load impedance exceeds 2500 Ohms, triggered by poor electrode adhesion or high skin dryness. It is a safety feature required by IEC 60601-2-10 to prevent high-voltage arcing.
Q: What is the tolerance for pulse timing accuracy?
A: The crystal oscillator on the PCB maintains a frequency deviation of < 1%. Pulse width jitter is controlled to < 2 microseconds to ensure constant sensory input.
CTA
B2B buyers can request circuit schematics and bench test reports for technical evaluation.
👉 [Request Technical Evaluation Unit]
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Products Description
|
Device name |
TENS-808 |
|
Power sources |
3.7 V Li-ion battery |
|
Power supply |
Input: 100-240V AC, 50/60Hz,0.2A; Output: 5V DC, 300mA |
|
Output channel |
Dual channel |
|
Waveform |
Bi-phase square-wave pulse |
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Output current |
Max. 120mA (at 500ohm load) |
|
Output intensity |
0 to 40 levels, adjustable |
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Treatment mode |
TENS, EMS and MASSAGE mode |
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Number of programs |
26 program |
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Pulse rate |
2Hz ~ 120Hz |
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Pulse width |
50uS ~ 300uS |
|
Treatment time |
5 minutes ~ 90 minutes |
|
Operating condition |
5° C to 40° C with a relative humidity of 15%-93%, |
|
Storage condition |
-10° C to 55° C with a relative humidity of 10%- |
|
Dimension |
109*55*18mm (L x W x T) |
|
Weight |
About 73g |
|
Automatic shutof |
1 minute |
|
Classification |
BF type applied part, internal power equipment, IP22 |
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Size of electrodes pad |
40x40mm, square |
|
Output precision |
±20% error is allowed for all the output parameters |
