Device for providing cutaneous sensations to a fingertip

    公开(公告)号:US10558269B2

    公开(公告)日:2020-02-11

    申请号:US16336065

    申请日:2017-09-22

    Abstract: A device for providing cutaneous sensations to a fingertip includes a lower base, an upper platform positioned over and mechanically connected to the lower base, and a shear plate positioned between the lower base and the upper platform and mechanically connected to the lower base. When a fingertip is positioned between the upper platform and the lower base, the upper platform is selectively vertically translatable relative to the lower base to provide a compressive force, and the shear plate is selectively laterally translatable relative to the lower base to provide a shear force. Accordingly, a wearable fingertip device having two degrees-of-freedom (DoF) to provide consecutive and/or concurrent compressive force and/or shear force to a fingertip is provided. The wearable fingertip device can be used in various scenarios; is portable, easily wearable, and easily manufacturable; and has low overall operating power requirements.

    DEVICES AND METHODS FOR TARGET MOLECULE CHARACTERIZATION

    公开(公告)号:US20190317040A1

    公开(公告)日:2019-10-17

    申请号:US16389859

    申请日:2019-04-19

    Abstract: An system for recognition of a translocating polymeric target molecule includes a device having at least one constriction that is sized to permit translocation of only a single copy of the molecule. A pair of spaced apart sensing electrodes border the constriction, which may be a nanopore. The first electrode is connected to a first affinity element and the second electrode is connected to a second affinity element. Each affinity element may be connected to its corresponding electrode via one or more intermediary compounds, such as a linker molecule and/or an electrode attachment molecule. The first and second affinity elements are configured to temporarily form hydrogen bonds with first and second portions of the target molecule as the latter passes through the constriction. During translocation, the electrodes, affinity elements and first and second portions of the target molecule complete an electrical circuit and allow a measurable electrical current to pass between the first and second electrodes. The time-varying nature of this electrical current, and the specific affinity elements employed, allow one to characterize the target molecule.

    Controlled stimulation delivery from neurostimulator

    公开(公告)号:US10441803B2

    公开(公告)日:2019-10-15

    申请号:US15226775

    申请日:2016-08-02

    Abstract: A system for providing neurostimulation includes an external device (“external exciter”) and an implanted device. The external exciter includes an energy source which inductively powers the implanted device. Examples of such external exciters include devices having at least one of: ultrasonic transducers, Radio Frequency (RF) transmitters, and solar cells. The implanted device includes circuitry that limits its maximum energy output to a predetermined saturation threshold such that excess stimulation from the external exciter does not raise the output of the implanted device beyond the saturation threshold. The output signal of the external exciter is then pulse-width modulated in order to produce a desired amount of output stimulation from the implanted device to stimulate the bioelectrically excitable tissue at a desired level.

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