Curapuls 670

The Curapuls 670 is a two-channel microprocessor-controlled shortwave diathermy device that applies therapeutic deep heat to body tissues using pulsed high-frequency electromagnetic current at 27.12 MHz delivered through inductive electrodes (Circuplodes). It is indicated for relieving pain, reducing muscle spasm, increasing range of motion of contracted joints, and increasing blood flow to tissues in selected medical conditions. The device is prescription-only equipment for use by physicians.

The Curapuls 670 operates at 27.12 MHz (same as predicate BTL-703) with a peak output of 200 W in pulsed mode (versus predicate's 2×100 W continuous). Key differences include: mechanical applicator attachment versus the predicate's negative pressure system; three applicator sizes (90 mm, 140 mm, oval) versus predicate's 100 mm; pulsed versus continuous operation mode; 100–240 VAC power supply versus predicate's internal 120 VAC; and different dimensions. Both use touchscreen interfaces, Class II BF electrical protection, and firmware control.

IEC 60601-1 (general electrical safety), IEC 60601-1-2 (electromagnetic disturbance), IEC 62304 (software life cycle), ISO 14971 (risk management), ISO 10993-1 (biocompatibility evaluation), ISO 10993-5 (in vitro cytotoxicity), ISO 10993-10 (irritation and skin sensitization), and ANSI AAMI ES60601-1 (electrical and mechanical safety).

Both devices share identical indications for use and the same 27.12 MHz operating frequency. Although the Curapuls 670 uses pulsed rather than continuous delivery, both modes are established in cleared shortwave diathermy devices and both have been tested for thermal effects on tissue. The mechanical applicator arm system used in the Curapuls 670 replaces the predicate's negative-pressure system and its associated sleeves and thermal stabilization, eliminating the need for those accessories while maintaining applicator positioning and control. The broader power input range (100–240 VAC) has been verified to meet electrical safety standards and introduces no new safety questions. Minor dimensional and applicator size differences do not affect the fundamental thermal mechanism or safety profile.