339results about How to "Control changes" patented technology

An implantable device applies and controls a neural stimulus. The device has a plurality of electrodes, and a stimulus source for providing a stimulus to be delivered from the electrodes to a neural pathway in order to evoke an action potential on the neural pathway, such as the spinal cord. A control unit controls application of a neural stimulus as defined by a set of parameter values and measures via measurement circuitry an evoked neural compound action potential response. The control unit determines from the measured evoked response a feedback variable, and compares it to a therapy map. The therapy map defines a therapeutic relationship of control variable to feedback variable. One or more of the stimulus parameter values are altered to effect the required change in the control variable. This process is performed iteratively to improve alignment of the feedback variable with the therapy map over time.

The present invention relates to the field of biomedical engineering and medical treatment of diseases and disorders. Methods, devices, and systems for in vivo treatment of cell proliferative disorders are provided. In embodiments, the methods comprise the delivery of high-frequency bursts of bipolar pulses to achieve the desired modality of cell death. More specifically, embodiments of the invention relate to a device and method for destroying aberrant cells, including tumor tissues, using high-frequency, bipolar electrical pulses having a burst width on the order of microseconds and duration of single polarity on the microsecond to nanosecond scale. In embodiments, the methods rely on conventional electroporation with adjuvant drugs or irreversible electroporation to cause cell death in treated tumors. The invention can be used to treat solid tumors, such as brain tumors.

An optical scanning device, including a resin lens having a power that is an inverse power of scanning lens placed before a deflector. A bundle of rays emitted from a plurality of light sources is coupled into a desired state by coupling lens, after which the bundle of rays is incident on the resin lens. The surface of incidence of the resin lens has a spherical surface with a negative power, and the exit surface of this resin lens has a cylindircal surface with a negative power only in the sub scanning direction. The bundle of rays passes through the resin lens and enters a glass toroidal lens. A light deflector deflects the bundle of rays from the toroidal lens. The deflected bundle of rays is incident on a third optical system that condenses the deflected bundle of rays onto a surface to be scanned.

The present invention provides light emitting displays which produce a bright image by efficiently emitting light radiated from a light-emitting thin-film layer to the viewer side, and also produces a high-quality image of high contrast ratio and changing in color to a limited extent over a wide viewing angle range even in a bright atmosphere. The light emitting displays are provided with a plurality of light-emitting devices 70, each device 70 having a light-emitting thin-film layer 100 and a light reflective surface 300 in this order on the back side, and a circularly polarized light reflective layer 500 which separates incident light into two types of circularly polarized components, one being reflected and the other transmitted by the reflective layer, an optical compensation layer 800, a quarter-wave plate 700 and a polarizer 600 on the front side, wherein the optical compensation layer 800 is composed of a transparent body working as an optical indicatrix having little refractive index distribution in the in-plane direction and having a refractive index in the thickness direction different from that in the in-plane direction.

The present invention relates to the field of biomedical engineering and medical treatment of diseases and disorders. Methods, devices, and systems for in vivo treatment of cell proliferative disorders are provided. In embodiments, the methods comprise the delivery of high-frequency bursts of bipolar pulses to achieve the desired modality of cell death. More specifically, embodiments of the invention relate to a device and method for destroying aberrant cells, including tumor tissues, using high-frequency, bipolar electrical pulses having a burst width on the order of microseconds and duration of single polarity on the microsecond to nanosecond scale. In embodiments, the methods rely on conventional electroporation with adjuvant drugs or irreversible electroporation to cause cell death in treated tumors. The invention can be used to treat solid tumors, such as brain tumors.

A multi-beam optical scanning device is disclosed that includes a light source emitting a bundle of rays, a first optical system coupling the rays into diverging rays, a second optical system condensing the diverging rays into linear rays extending in the main scanning direction, a light deflector deflecting the linear rays, and a third optical system condensing the deflected rays onto a scanning surface. The second and third optical systems include resin imaging elements. At least one resin imaging element of the second optical system has a negative power in a sub scanning direction and a surface configuration that is arranged to effectively compensate for a change in field curvature caused by a temperature change in a support member of the first optical system or the resin imaging element of the third optical system. The second optical system as a whole has a positive power in the main scanning direction.

A device for concealing a seam between a first surface and a second surface includes a moveable body fixedly attached to a selected one of the first surface and the second surface, wherein the moveable body is configured to transition between a first position and a second position to conceal and expose the seam, and an active material in operative communication with the moveable body, wherein the active material is configured to undergo a change in at least one property upon receipt of an activation signal, wherein the change in at least one property is effective to transition the moveable body from the first position to the second position.