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    • 14. 发明申请
    • FISTULA GRAFTS AND RELATED METHODS AND SYSTEMS USEFUL FOR TREATING GASTROINTESTINAL FISTULAE
    • FISTULA GRAFTS和相关方法和系统有助于治疗胃肠道炎症
    • US20080027477A1
    • 2008-01-31
    • US11766606
    • 2007-06-21
    • F. ObermillerSteve Chen
    • F. ObermillerSteve Chen
    • A61M29/00
    • A61B17/0057A61B2017/00004A61B2017/00641A61B2017/00654
    • Described are medical graft products, systems, and methods useful for treating fistulae, particularly enterocutaneous fistulae. Certain products of the invention are configured to have portions residing in and around a primary fistula opening in a wall of the alimentary canal. One such product includes a biocompatible graft body which is configured to block at least the primary opening. The graft body includes a capping member connected to an elongate plug member. The capping member is configured to contact portions of the alimentary canal wall adjacent to the primary opening, and the elongate plug member is configured to extend into at least a portion of the fistula. A graft product of this sort may be particularly adapted to allow a portion of the capping member to be positioned alongside an exterior, lateral surface of the plug member, e.g., when placed in a delivery device lumen. Such a capping member may be hingedly or non-hingedly coupled to the elongate plug member.
    • 描述了用于治疗瘘,特别是肠外瘘的医疗移植产品,系统和方法。 本发明的某些产品被配置为具有驻留在消化道壁的主瘘开口内和周围的部分。 一种这样的产品包括生物相容性移植物体,其构造成至少阻挡初级开口。 移植物主体包括连接到细长插塞构件的封盖构件。 封盖构件被构造成接触与初级开口相邻的消化道壁的部分,并且细长插塞构件构造成延伸到至少一部分瘘管中。 这种接枝产品可以特别适于允许封盖构件的一部分定位在插塞构件的外部侧表面旁边,例如当放置在输送装置内腔中时。 这种封盖构件可以铰接地或非铰接地联接到细长插塞构件。
    • 19. 发明申请
    • Novel Karaoke and Multi-Channel Data Recording / Transmission Techniques via Wavefront Multiplexing and Demultiplexing
    • US20110197740A1
    • 2011-08-18
    • US12848953
    • 2010-08-02
    • Donald C.D. ChangSteve Chen
    • Donald C.D. ChangSteve Chen
    • G10H1/36H04J3/00
    • G10H1/361
    • An advanced channel storage and retrieving system is achieved that is capable of simultaneously transporting multiple-stream data concurrently, with encryptions and error detection and limited correction capability using wavefront (WF) multiplexing (muxing) at the pre-processing and WF demultiplexing (de-muxing) in the post-processing. The WF muxing and demuxing processing can be applied for multiple signal streams with similar contents and format such as cable TV delivery systems or multiple signal streams with very distinct contents and format such as Karaoke multimedia systems. The stored or transported data are preprocessed by a WF muxing processor and are in the formats of multiple sub-channels. Signals in each sub-channel are results of unique linear combination of all the input signals streams. Conversely, an input signal stream is replicated and appears on all the sub-channels. Furthermore the replicated streams in various sub-channels are “linked” together by a unique phase weighting vector, which is called “wavefront” or WF. Various input signal streams will feature different WFs among their replicated signal streams in the sub-channels. The WF muxing processing is capable to generating a set of orthogonal WFs, and the WF demuxing processing is capable of reconstituting the input signal streams based on the retrieved sub-channel data only if the orthogonal characteristics of a set of WFs are preserved. Without the orthogonality among the WF, the signals in sub-channels are mixed and become effectively pseudo random noise. Therefore, an electronic locking mechanism in the preprocessing is implemented to make the WFs un-orthogonal among one another. Similarly, an electronic un-locking mechanism in the post-processing is implemented to restore the orthogonal characteristics among various WFs embedded in the sub-channel signals. Some of the phenomena due to the selected locking mechanisms are reproducible in nature, such as wave propagating effects, and other are distinctively man-made; such as switching sub-channel sequences. There are other conventional encryption techniques using public and private keys which can be applied in conjunction with the WF muxing and de-muxing processor, converting plain data streams into ciphered data streams which can be decoded back into the original plain data streams. An encryption algorithm along with a key is used in the encryption and decryption of data. As to the optional parallel to serial and serial to parallel conversions in the pre and post processing, respectively, we assume that transmissions with single carrier are more efficient than those with multiple carriers. We also assume single channel recording is more cost effective than multiple channel recording. However, there are occasions that continuous spectrum is hard to come-by. We may use fragmented spectrum for transmissions. There are techniques to convert wideband waveforms using continuous spectra into multiple fragmented sub-channels distributed on non-continuous frequency slots. Under these conditions we may replace the parallel to serial conversion processing by a frequency mapping processor.