摘要:
A radio-over-fiber (RoF) hybrid wired/wireless transponder is disclosed that is configured to provide both wireless and wired communication between a hybrid head-end and one or more client devices. The hybrid transponder includes optical-to-electrical (O/E) and electrical-to-optical (E/O) conversion capability and is configured to frequency multiplex/demultiplex electrical “wired” signals and electrical “wireless” signals. The electrical wireless signals are wirelessly communicated to the client device(s) via a multiple-input/multiple-output (MIMO) antenna system within a cellular coverage area. The electrical wired signals are communicated to the client device(s) via a wireline cable that plugs into a wireline cable port on the transponder. The hybrid RoF system includes a hybrid head-end capable of transmitting and receiving wired and wireless optical signals, and an optical fiber cable that is optically coupled to the hybrid head-end and to at least one hybrid transponder. Drop-down transponder configurations that allow for easy wired and wireless connectivity between the client device(s) to the transponder(s) are also disclosed.
摘要:
A device for securing a surgical suture to a bone comprises a first element, which can be introduced into a bone, and a second, movable element, which can be introduced into said bone in such a way that it meets said first element. A channel being formed in said bone as a result of introducing said first and said second elements into that bone. One of said two elements carries a surgical suture. A suture catcher is arranged within that element of the two elements not carrying said suture, by means of which suture catcher said suture can be taken hold of and said suture can be withdrawn via said element not carrying said suture.
摘要:
A device is used for inserting at least one anchor piece into a hollow space of a living being, in order to fix a wall of the hollow space temporarily to a wall of the body by means of the at least one anchor piece. It is proposed that the device has two shaft-like elements which are axially movable relative to one another and by which the at least one anchor piece is held captive at its axially spaced apart opposite ends, and moreover has an actuating mechanism via which the at least one element can be moved in such a way that the anchor piece held by it is released.
摘要:
The radio-over-fiber (RoF) transponder includes a converter unit adapted to convert RF electrical signals into optical signals and vice versa, and an antenna system electrically coupled to the converter unit. The antenna system includes first and second Z-shaped patch antenna elements formed on an antenna substrate. These patches are adapted to respectively transmit and receive radio-frequency (RF) electromagnetic radiation at a first frequency fA (e.g., 2.4 GHz) over a first picocell. The antenna system also includes a square patch antenna element formed atop the antenna substrate surface between the first and second Z-shaped patch antenna elements. The square patch antenna is adapted to transmit and receive RF electromagnetic radiation at a second frequency fB (e.g., 5.2 GHz) over a second picocell substantially co-located with the first picocell. One or more spaced-apart transponders can be supported by one or more optical fibers to form an array of picocells.
摘要:
The centralized optical-fiber-based wireless picocellular system includes one or more service units at a central head-end station. The one or more service units are optically coupled to one or more transponders via respective one or more optical fiber RF communication links. The transponders are each adapted to provide within the associated picocell electromagnetic RF service signals from different service units, and receive electromagnetic RF service signals from any client device within the picocell. The service signal from the particular client device is sent over the optical fiber RF communication link back to one or more service units. The transponders are arranged along the length of one or more optical fiber cables, which can be distributed throughout a building infrastructure. This creates a picocellular coverage area that provides a number of different wireless services relative to the building infrastructure. The service units can generate the electrical service signals, pass such signals to and from one or more outside networks, and/or coordinate the delivery of the signals between client devices within the picocellular coverage area.
摘要:
An electrical-optical cable for wireless system that includes two electrical-to-optical (E/O) converter units optically and electrically coupled via a cord that includes a downlink optical fiber, an uplink optical fiber, and an electrical power link. The first E/O converter receives radio-frequency (RF) electrical signals from an access point device, converts them to corresponding RF optical signals, and transmits the optical signals over the downlink optical fiber to the second E/O converter. The second E/O converter receives and converts the RF optical signals back to the original RF electrical signals. The RF electrical signals at one of the E/O converter units drive an antenna connected thereto. RF signals received by the wireless antenna are processed in a similar manner, with the optical signals being sent to the other E/O converter unit over the uplink optical fiber. The electrical-optical cable allows for the remote placement of the antenna relative to an access point device, with the antenna-side E/O converter unit power by electrical power provided by the other E/O converter unit.
摘要:
An instrumentarium for implanting a tendon replacement in a channel within a bone comprises a suture retention device. Said suture retention device has a plate-shaped body and a cylindrical pin projecting from said plate-shaped body. At least two openings extend through that plate-shaped body and said cylindrical pin for threading fixation threads of a tendon replacement therethrough. Said plate-shaped body having edges adapted for applying a tool for rotating said suture retention device (FIG. 13).