摘要:
An implantable blood pump includes motor control circuitry and power electronics circuitry integrated within the implantable pump body. The motor control circuitry and power electronics circuitry is configured to energize and control motor windings to rotate the pump rotor and impeller. Additional control circuitry and power electronics circuitry may be integrated within the pump housing to energize and control magnetic bearings of a magnetic levitation pump. A percutaneous cable coupled between the implantable blood pump and an extracorporeal monitor includes a reduced number of leads to provide power and control signals to the implantable blood pump. Wireless communication between the extracorporeal monitor and the integrated power electronics and control circuitry facilitates the use of a percutaneous cable with as few as two leads for providing power to the implantable pump.
摘要:
An implantable blood pump includes motor control circuitry and power electronics circuitry integrated within the implantable pump body. The motor control circuitry and power electronics circuitry is configured to energize and control motor windings to rotate the pump rotor and impeller. Additional control circuitry and power electronics circuitry may be integrated within the pump housing to energize and control magnetic bearings of a magnetic levitation pump. A percutaneous cable coupled between the implantable blood pump and an extracorporeal monitor includes a reduced number of leads to provide power and control signals to the implantable blood pump. Wireless communication between the extracorporeal monitor and the integrated power electronics and control circuitry facilitates the use of a percutaneous cable with as few as two leads for providing power to the implantable pump.
摘要:
A method of etching features into a silicon layer with a steady-state gas flow is provided. An etch gas comprising an oxygen containing gas and a fluorine containing gas is provided. A plasma is provided from the etch gas. Then, the flow of the etch gas is stopped.
摘要:
A system and method for data deduplication includes a first computer device that determines duplicacy of a data item. If the data item is not a duplicate, the first computer device transmits a request to add an entry for the data item in a deduplication table of a deduplication database. The database adds the entry for the data item while enforcing uniqueness of data across one or more data fields of the deduplication table, where, in enforcing the uniqueness, the database denies an attempt by the second device to add an entry in the deduplication table for the same data item.
摘要:
An air-cooled generator may be provided with a centrifugal blower configured for rotation on a shaft of the generator. The centrifugal blower may have an axially oriented outlet. An impeller of the blower may have blades with trailing edges oriented at an angle between 80° to about 90° relative to an axis of the shaft of the generator.
摘要:
A HTML file defining a GUI is created and GUI elements defined therein for a default screen resolution can be reconfigured as appropriate when the GUI senses a new screen resolution.
摘要:
A device, such as an access point or router, in a wireless network includes a user-readable visual display that displays information about the network, such as the number of users, the identities of the users, the type of WAN connection, the channel, and other network information.
摘要:
Disclosed is a screw with an improved head, in which a stress-relieving notch is formed at each corner of a driving recess on the screw head. The stress-relieving notch is in an equal arcuate shape. Apart from the well known slotted or Phillips one, the driving recess is also available with a triangle, square, hexagonal, or any other multiangular form in section.
摘要:
An improved motorcycle step and assembly of interlocking components including an axle for connection to the motorcycle frame the axle featuring a tapered section for engaging an inner sleeve having a plurality of ribs formed along its outer surface, the inner sleeve being composed of a soft material and being locatable on the axle, an outer sleeve having a plurality of slots corresponding to the ribs which is adapted to slide over the inner sleeve and receive the ribs and a locating element formed on the end of the outer sleeve to receive a projection from the axle where the outer sleeve has an optional decorative cover plate.
摘要:
A improved footrest includes a supporting bracket which is made from rigid material and a supporting stuffing which is made from soft material. The first supporting bracket has a hollow chamber at its center and is provided with a plurality of elongate slots formed in its wall. The supporting stuffing has a passage defined in the center and a plurality of projecting ribs formed on its outer surface in alignment with the slots of the supporting bracket. A shaft member is received and retained within the passage of the supporting stuffing to provide a rigid support to the supporting stuffing and the supporting bracket. The shaft member has a cylindrical recess at one end and a hole is provided through the outer wall of the shaft member such that the hole is in communication with the recess. A connecting adaptor has a lug at one end and a shaft at the other end. The lug of the connecting adaptor has a hole therein and can be attached to a frame of the motorcycle using a bolt and a nut. The shaft of the connecting adaptor is provided with an annular slot in alignment with the hole of the shaft member. Accordingly, the connecting adaptor is rotatably retained within the shaft member by utilizing a dowel screw which passes through the hole of the shaft member and projects into the annular slot of the shaft of the connecting adaptor. Accordingly, an improved footrest assembly which provides excellent support and frictional contact is achieved.