Domain Surgical's FMwand ferromagnetic surgical technology offers surgeons many unique characteristics and clinical advantages when compared to existing energy-based surgical modalities.

Electrical Silence During Operation

The FMwand is "electrically silent" during its operation and has proven successful in procedures where delicate dissection near implanted cardiac devices and electrophysiological monitoring is required.

Actual Pacemaker Monitoring Chart during cardiac surgery showing interference caused when using monopolar electrosurgery (top). Pacemaker monitoring chart during same cardiac surgery showing no interference when using the FMwand (bottom).

Histopathology indicates that FMwand incisions in rabbit liver (left) exhibited uniform margins of heat injury, while monopolar incisions (right) showed dramatic collateral damage and extreme variability.

Comparative histology of rabbit paraspinous muscle tissue harvested two weeks following incision using FMwand (left), Cold Scalpel (middle), and Monopolar Coagulation (right)

Comparative thermal imaging taken 0.1 seconds after incision - FMwand (left) maximum temperature is 78.1° C while Monopolar Coagulation (right) maximum temperature is 132.8° C

Precise Control of Thermal Energy

The FMwand produces precise, uniform, and repeatable incision margins with reliable hemostasis. Surgeons using the FMwand consistently note the absence of char and muscle stimulation, and a layer-by-layer dissection capability which provides excellent visualization of tissue planes.

Reduced Tissue Damage Leads to Improved Outcomes

The FMwand produces much less thermal tissue damage when compared to electrosurgery; preserving more viable, healthy tissue beyond the incisional plane. Electrosurgery routinely imparts more than 1500 microns of thermal damage in various tissue types. Surgeons indicate that minimizing tissue damage may result in faster healing, less post-operative pain and scarring, lower infection rates, and earlier patient discharge.