摘要:
Devices and methods for monitoring the flow of blood through an intravascular device are disclosed. An apparatus for monitoring blood flow in accordance with an exemplary embodiment of the present invention includes an intravascular device coupled to an elongated member, a first sensor adapted to measure fluidic pressure proximal the intravascular device, a second sensor adapted to measure fluidic pressure distal the intravascular device, and a control unit for comparing the signals received from the first and second sensors to determine the pressure drop across the intravascular device.
摘要:
Intravascular filters formed by a molding process can have a plurality of integrally formed apertures. A molding process can utilize a mold assembly that includes a mold having a mold surface and a die having a die surface. The mold assembly includes plurality of protrusions that extend from at least one of the mold surface and the die surface. A molten material is placed within a portion of the mold, and the die is then inserted into the mold such that the plurality of protrusions span a distance between the die surface and the mold surface. The molten material is allowed to solidify, thereby forming a filter membrane that includes a plurality of integrally formed apertures.
摘要:
Anchoring mechanisms for releasably securing an intravascular device along an elongated member such as a guidewire or catheter. The anchoring mechanism may include an object that can be actuated between an unlocked position and a locked position. In the unlocked position, the anchoring mechanism is slidably and rotationally disposed about the elongated member. In the locked position, the anchoring mechanism is releasably secured to the elongated member, preventing movement thereon. A placement mechanism such as a tubular member can be utilized to actuate the anchoring mechanism between the unlocked and locked positions.
摘要:
Intravascular filters can include a filter membrane having a hydrophilic polymer coating on the filter membrane. The hydrophilic polymer coating can be on an inner surface, an outer surface or both an inner surface and an outer surface of the filter membrane. Intravascular filters including a hydrophilic polymer coating may be considered as providing increased hemocompatibility, decreased risk of filter-induced thrombosis and reduced sheathing forces.
摘要:
Medical devices and methods for manufacturing the same. An example medical device includes a shaft or substrate that is coated with a lubricious coating. The coating includes a plurality of sections that have differing lubricities. At least some of the sections include a hydrophilic polyurethane. A coated section can include an aliphatic polyether polyurethane. The methods for manufacturing the medical devices may include at least in part microdispensing such as inkjet-type printing.
摘要:
Method and system for aligning a clock signal to parallel data are described. According to one embodiment, a clock shifting circuit shifts an incoming clock signal relative to an incoming data signal, and a data clocking circuit uses the shifted clock signal to reclock the incoming data signal. The clock shifting circuit may comprise a phase locked loop (PLL) coupled with multiple D flip flops (DFFs) connected in series. Divisional combinatorial logic may be disposed between DFFs in the series. Data clocking circuits may comprise one DFF to reclock each incoming data bit, a pair of DFFs to reclock each incoming data bit, or other circuits such as true-complement blocks to serve as local oscillators to mixers. Multiple shifted clock signals may be produced, such as those shifted 60, 90, 120, 180, 240, and 270 degrees relative to the incoming clock signal.
摘要:
An electromagnetic apparatus includes: (a) A magnetic material arranged in a core structure establishing a first flux path set and a second flux path set; the first flux path set includes a first middle flux path oriented about a first axis and two first side flux paths parallel with the first axis; the second flux path set includes a second middle flux path oriented about a second axis and two second side flux paths parallel with the second axis; the second axis is perpendicular with the first axis. The first and second flux path sets cooperate to establish open spaces. Each open space is bounded by portions of two flux paths from each of the first and second flux path sets. (b) A plurality of windings for conducting electrical current about the magnetic core structure. The windings are oriented around one axis on both sides of the other axis.
摘要:
A method for inhibiting Rotavirus infection by administering effective amount of lactulose is provided. Lactulose can be administered alone, in combination with other nutrient supplements such as vitamins, or as part of a nutritional product such as infant formula.
摘要:
A surgical suction nozzle for removing surgical debris and vomitus from unconscious patients in a surgical operative field that is highly resistant to clogging.An oval-shaped opening forming the suction tip is circumscribed by a raised ridge inward of the opening. A plurality of small apertures inward of the raised ridge circumscribes the nozzle, which is placed into the mouth during surgery. The suction nozzle is angularly related in three cylindrical segments to prevent any encumbrance to the surgeon.A suction control hole located on the medial segment of the suction nozzle allows the surgeon to control the suction pressure during the operation. The proximal end of the suction nozzle is beveled to be connected to a suction tube which transports surgical debris to a vacuum collection jar via a suction pipe in the cap of the jar. A debris removal pipe in the cap of the jar is connected to a vacuum tube leading to the vacuum line service outlet found in the surgery room.