43 results about "Deep brain stimulator" patented technology

The invention discloses a percutaneous closed-loop control charging device for implantation type medical treatment instrument and belongs to the technical field of implantation medical instrument. The percutaneous closed-loop control charging device for implantation type medical treatment instrument comprises an external charger and an internal implantation type medical instrument. An external energy transmitting coil is a large-size flat magnetic core coil, and an internal energy receiving coil is a hollow coil; the external energy transmitting coil transmits electromagnetic energy by adopting a resonance electromagnetic coupling manner with parallel central shafts; and the electrical energy obtained by the internal energy receiving coil charges an internal rechargeable battery through an internal charge control circuit. The closed-loop control charging device communicates in a pulse position modulation manner for closed-loop control to ensure the energy received by the implantation medical instrument in different charging phases to be within the normal range, effectively control the heating and increase the safety; the closed-loop control charging device calculates the efficiency by the internal feedback parameter to realize counterpoint prompt and increase the charging efficiency. The percutaneous wireless charging method can charge the implantation type medical instrument by a titanium casing, is safe and reliable in charging, and can be applied to all types of implantation type medical instruments equivalent to a deep brain stimulator in power level.

A method of optimal placement of a deep brain stimulator in a targeted region of a brain of a living subject for optimal deep brain stimulation. In one embodiment, the method includes the steps of nonmanually selecting an initial optimal position from, refining the nonmanually selected initial optimal position to determine a final position, and placing the deep brain stimulator at the final position in the targeted region of the brain of the living subject.

The invention provides a sleep detection-based integrated closed loop deep brain stimulator. The sleep detection-based integrated closed loop deep brain stimulator has a real-time sleep detection function, is capable of identifying the sleep or awake state of a patient and is capable of automatically adjustably outputting parameters of electrical stimulation in real time according to different states of the patient. When the patient is sleeping, a pulse generator automatically stops outputting the electrical stimulation or weakening the strength of the electrical stimulation output, and when the patient is awake, a normal operation mode of the pulse generator is recovered. On one hand, the system power consumption of the deep brain stimulator is favorably reduced, and thereby, the service life of the deep brain stimulator is prolonged, and on the other hand, the sleep detection-based integrated closed loop deep brain stimulator is favorable for reducing the harmful effects of the continuous high-frequency electrical simulation to the patient.

Due to the lack of internal anatomic detail with traditional magnetic resonance imaging, preoperative stereotactic planning for the treatment of tremor usually relies on indirect targeting based on atlas-derived coordinates. To overcome such disadvantages, a method is provided that allows for deep brain stimulation targeting based on brain connectivity. For example, probabilistic tractography-based thalamic segmentation for deep brain stimulator (DBS) targeting is suitable for the treatment of tremor.

The invention belongs to a remote regulation and control method for an implanted medical device, and particularly relates to a method for remote regulation control as well as tracking survey of patient state of an implanted deep brain stimulator. The system is based on the SIP (session initiation protocol) and RTP (real-time transport protocol) as well as Bluetooth communication mode of the 3G (3rd generation) communication network, and realizes one-to-one visual safe remote regulation and control. The system mainly comprises a control end 1, a 3G mobile communication network 2, a client 3, aprogram controller 4 and an implanted pulse generator 5. The regulation and control method comprises the following steps: a doctor looks for relevant information of a patient through a computer 6 of the control end 1 and a 3G mobile phone 8, observes the physical sign of the patient, selects proper adjustment parameters and sends the adjustment parameters to the client 3 through the 3G mobile communication network 2; the client 3 communicates with the program controller 10 through a Bluetooth protocol; and the program controller 10 controls the pulse generator 11 and reversely returns the feedback information to the control end. According to the invention, the physical sign information of the patient can be acquired anytime and anywhere, the stimulation pulse parameters are adjusted, and the clinical requirements on tracking visit and quick diagnosis of the patient with the implanted deep brain stimulator are met; and moreover, as the public wireless communication network and common communication equipment are used, the cost is low, the reliability is high, and the practicability is strong.

An external deep stimulator for brain and its aligning unit are disclosed. The stimulator has external exciting coil and the induction output coil in human body for the coupling between internal and external signals. The aligning unit has the external permanent magnet close to said exciting coil and two magnetic cores respectively arranged in said exciting coil and induction output coil.

The present invention regards a probe for deep brain stimulation (DBS), with high overall impedance, but low overall resistance. This is achieved since the probe comprises a structure comprising at least two interconnected spirals, wherein said two spirals have different direction of rotation. A system for deep brain stimulation comprising the probe, a power source and an electrode is also disclosed.

The present invention relates to deep brain stimulator and belongs to the field of medical equipment. The class D amplifier driven external deep brain stimulator includes one in vivo signal stimulating part, one in vitro signal generating and controlling part, and one signal coupling module for signal coupling between the two foregoing parts. The in vivo signal stimulating part includes one pair of stimulating electrodes; and the in vitro signal generating and controlling part includes one class D amplifier and pulse driver module, one micro controller module. The pulse signal the micro controller module generates is amplified in the class D amplifier and pulse driver module and introduced with the signal coupling module to body to excite the stimulating electrode pair. The present invention has the advantages of low power consumption and high efficiency. The in vivo inducing output coil and stimulating electrodes are implanted via once operation and need no power source.

The present technology provides a medical stimulation system having a clinical programmer configured to operate on a computational and memory device having a wireless communication device. The technology also provides a neurostimulator configured to wirelessly communicate with the clinical programmer. The neurostimulator also includes a pulse generator operatively coupled with an electrode by a lead. The pulse generator is configured to transmit an electrical signal comprising a repeating succession of non-regular pulse trains. Each pulse train includes a plurality of pulses having non-regular, non-random, differing inter-pulse intervals therebetween. The pulse trains repeat in succession to treat a neurological condition. Further, the pulse trains are initiated by instructions communicated by the clinical programmer.

The invention provides a current pulse amplitude calibration method applied to a DBS and an automatic calibration acquisition circuit. The automatic calibration acquisition circuit in a deep brain stimulator DBS circuit is used for acquiring a current pulse amplitude; and through a current pulse amplitude calibration method, according to the acquired actual output current pulse amplitude, an inputvalue of DAC is continuously adjusted so that the actual output current pulse amplitude corresponding to each current is equal to a theoretical output current pulse amplitude or approaches the theoretical output current pulse amplitude within a tolerance range. The calibrated actual output current pulse amplitude better meets an output requirement of the deep brain stimulator DBS circuit, and output precision is relatively high.

The present disclosure provides advantageous optical conduit assemblies (e.g., biocompatible and implantable optical conduit assemblies), and related methods of use. More particularly, the present disclosure provides advantageous optical conduit assemblies (e.g., polydimethylsiloxane (“PDMS”)-based optical conduit assemblies) configured to power implantable devices (e.g., neural micro-stimulators or deep brain stimulators or the like) or to be used in optogenetic stimulation. In general, the exemplary optical conduit assemblies can be used for applications where energy needs to be transmitted to deep locations inside the body or brain without using electrical wires. Therefore, implantable devices that need to be powered (e.g., neural prosthetics) can be powered from an external light source using an optical conduit and an optical-to-electrical converter (e.g., a photodiode) attached to the end of the optical conduit on the inside.

The invention discloses an impedance measuring device and method on the basis of deep brain stimulator electrodes. The device comprises a pulse emitting circuit, a signal amplifying circuit, an analog-to-digital conversion circuit, a processing controller, an electrode terminal selection module and the deep brain stimulator electrodes, wherein an output end of the processing controller is connected to a control end of the pulse emitting circuit and a control end of the electrode terminal selection module, an output end of the pulse emitting circuit is connected to the deep brain stimulator electrodes through the electrode terminal selection module, an input end of the signal amplifying circuit is connected to the deep brain stimulator electrodes through the electrode terminal selection module, and an output end of the signal amplifying circuit is connected to the processing controller through the analog-to-digital conversion circuit. The device and method can measure a contact impedance value between the deep brain stimulator electrodes and brain tissue and an impedance value among different pieces of the brain tissue.

The invention relates to a power monitoring method of a deep brain stimulator and a power monitoring system employing the method. The method comprises the steps of acquiring the stimulation parameters of a deep brain stimulator, calculating the battery-related parameters of the deep brain stimulator through a support vector machine prediction model, and displaying the calculated battery parameters to a user. According to the power monitoring method and the power monitoring system of a deep brain stimulator provided by the invention, the power of a deep brain stimulator can be predicted with high precision. Through the prediction scheme, DBS power monitoring and service life assessment under each stimulation parameter combination and patient's individual condition based on clinical specificity can be realized. The method and the system are of certain reliability, and can be applied to clinical practice eventually.