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Precision Stimu.
The TMS Robotic ArmThe TMS Robotic Arm is the high-tech patent product which is developed by Yingchi. It combines with NDI near infrared navigation system, intelligent machinery tracking system and TMS system. The robotic arm can place the coil above the target brain region and start treatment automatically. During the whole treatment process, the robotic arm can track the stimulation target and adjust the coil position automatically to prevent the coil deviating from the stimulation target caused by head movement.

Neuronavigation System
Adopting NDI high-resolution optical camera, the accuracy of the navigation system can up to 0.25mm. Importing the individual MRI/CT into the navigation system, operator can confirm stimulation target rapidly through the intelligent segmentation, matching, fusion, three-dimensional reconstruction function of neuronavigation software. Visualized anatomical and functional MRI data of the head and brain together with the transparent coil frame model and working area of the coil at the individual makes the facilitate the TMS navigation and stimulation process.

Super Accuracy
High accuracy is extremely important on the application of computer assisted surgery (CAS). The strong anti-jamming capacity of Polaris Spectra system and Polaris Vicra position sensor ensure the high-accuracy measured data in Rapid Impact. When the impact is too high to affect the measured accuracy, the sensor will be triggered and sound a warning.
NDI provides the customers with extra AAK(Accuracy Assessment Kit):AAK consists of precision evaluation tools and supporting software, enabling customers assess the accuracy of the sensor rapidly and easily. AAK assesses the data in the measuring space and will output the assessment report.

Position Sensor
Markers mounted on the trackers and pointers reflect the infrared signal transmitted by the camera. This signal is received by the camera and from this the system calculates the exact position of coil and head in space.

The TMS Robotic Arm Navigation System

The repeated positioning accuracy of robotic arm tracking system can up to 0.01mm, with the characteristics of high speed and high accuracy. The system based on the CNC control core with multiple internal six revolute joint robot algorithm, excellent software. It adapts digital communication to control the servo driver and I/O, simplify the complexity of wire and improve the capacity of resisting noise.

Deep Transcranial Magnetic Stimulation
Deep Transcranial Magnetic Stimulation 
Deep Transcranial Magnetic Stimulation (Deep TMS) using H-coils is a novel development in non-invasive euromodulation. The unique ability to stimulate deeper neuronal structures than any other commercially available TMS system may seem almost mythical; The Deep TMS H-coils feature a complex coil geometry designed to effectively enhance the depth penetration of TMS. Electric currents are induced by TMS at points where the coil is tangential to the scalp. Non-tangential coil elements cause the accumulation of surface charge, which counteracts the induced field and causes it to dissipate faster.

H-coils feature a unique design in which multiple coil elements are oriented tangentially with respect to the scalp surface, and non-tangential coil elements are minimized .A flexible base allows the coil to conform to the curvature of the scalp for maximal magnetic coupling.When the coil is discharged, the various elements act in concert, and locally induced fields combine to form a deeper and broader total electric field whose rate of decay is considerably slower compared to other TMS coils.

All TMS protocols are bound by the same safety guidelines, permitting the same maximal field strengths to be produced at the cortical surface.
Since the magnitude of the induced electric field diminishes with increasing distance from the coil, it is always strongest at the scalp.The threshold intensity required to achieve neural stimulation is on the order of 100 V/m.It follows that the depth of effective stimulation depends critically on the rate at which the electric field decreases with distance.

This rate of decay was measured for H1-coil and the figure-8 TMS coil.The H1-coil was found to have a much slower rate of attenuation, allowing it to penetrate deeper into the brain at the same safe stimulation levels. To reach similar depths with the figure-8 coil, stimulator output would have to be increased beyond safety limits, causing pain and increasing risk of seizure.