摘要:
A delivery system for percutaneously delivering and deploying a stented prosthetic heart valve. The delivery device includes a delivery sheath slidably disposed over an inner shaft, and a capture assembly. The capture assembly includes a spindle and a biasing member. The spindle is attached to the inner shaft and defines slot. The biasing member is disposed within the slot and self-transitions from a deflected condition to a normal condition. In a delivery state, the delivery sheath retains the prosthesis over the inner shaft and coupled to the spindle via the capture slot, including a portion of the prosthetic valve being engaged within the slot and the biasing member forced to the deflected condition. In a deployment state, the delivery sheath is proximally withdrawn and the biasing member self-transitions toward the normal condition to eject the prosthetic valve from the capture slot.
摘要:
A delivery system for delivering a stented prosthetic heart valve to a lumen of a patient, the delivery system including a tubular body having a proximal end, a distal end, and a base portion with a plurality of extending elements, wherein each of the extending elements is engageable with a portion of a stent of a prosthetic heart valve. The delivery system further includes a sleeve having an inner area. The sheath is longitudinally moveable relative to the base portion from a first position where the inner area of the sleeve at least partially covers the extending elements of the base portion to a second position where the extending elements are not positioned within the inner area of the sleeve.
摘要:
A pulsed circuit topology including a pulsed domino flip-flop. A circuit includes a domino logic gate having a domino output node responsive to input data during an evaluate pulse. Reset circuitry initiates and self-terminates a reset pulse during which the domino output node is precharged. A latch responsive to a first pulsed clock input signal is provided to latch data indicated at the domino output node.
摘要:
A process for manufacturing a water based adhesive which is substantially free of organic solvents and is useful as an adhesive for bonding natural rubber compounds, synthetic rubber compounds and a combination of natural and synthetic rubber compounds, especially during the formation of a tire.
摘要:
(S)-.alpha.-phenyl-2-pyridineethanamine, and its pharmaceutically acceptable derivatives, are useful in the treatment of neurodegenerative disorders, and exhibit linear pharmacokinetics.
摘要:
Surface acoustic wave bandpass transversal filters, e.g. television intermediate frequency filters, comprising a +.theta..degree. rotated Y-cut X-propagating lithium niobate substrate with .theta. in the range from 121.degree. to 127.degree., preferably 123.degree. to 125.degree.. For a suitable range of filter bandwidths (35 db bandwidth between 0.05 and 0.5) these substrates provide reduced degradation of the filter upper stopband predominantly due to indirect bulk shear waves in the frequency range from the passband up to the frequency where direct bulk longitudinal wave degradation becomes significant. This frequency range is 41.5 MHz to approximately 55 MHz for a U.K. system t.v. i.f. filter and is 60.25 MHz to approximately 90 MHz for a Japanese system t.v. i.f. filter.
摘要:
A box with a hinged lid is formed from a single sheet of cut and scored paperboard, the box being in the form of a tray having front, back and end walls and a lid which are reinforced by multiple plies of material so as to increase their rigidity, with a substantial thickness at the top edge of the front wall on which the lid is adapted to rest when closed, and with certain of the walls being reinforced by inserts, and the hinge structure joining the back wall and the multi-ply lid being such that the lid tends to close but may be readily held in an open position so as to permit access to the body of the box which is filled with a product such as cigars or similar products.
摘要:
A delivery system for use with a prosthetic heart valve having a stent frame to which a valve structure is attached includes a shaft assembly including a distal end, an intermediate portion, and a first coupling structure disposed near the distal end and configured to be coupled to a distal end of the prosthetic heart valve via a first tether. A sheath assembly defines a lumen sized to slidably receive the shaft assembly. The delivery system is configured to transition from a loaded state in which the sheath assembly encompasses the prosthetic heart valve to a deployed state in which the sheath assembly is withdrawn from the prosthetic heart valve. The first coupling structure is configured to be manipulated in a first direction to provide a controlled expansion or contraction of the distal end of the prosthetic heart valve.
摘要:
A microprocessor includes a register file that contains registers for storing pieces of data for use by execution units that receive the pieces of data through source ports. A bypass cache includes data registers into which pieces of data from the execution units are written. Data can be written to and read from the bypass cache in fewer clocks cycles than it can be written to and read from the register file. A content addressable memory array (CAM) includes address registers into which destination addresses are written which correspond to the pieces of data in the data registers. In the case of a particular piece of data, the particular data register into which the piece of data is written and the particular address register into which the corresponding destination address is written is controlled by the position of a write pointer provided by a rotating write pointer unit. The CAM includes a comparators that compare the destination address with a source address. If there is a match, a read port is enabled which provides the piece of data in the corresponding data register to conductors leading to the source port. Multiplexers select between pieces of data in the register file and a pieces of data in the data registers of the bypass cache.