Abstract:
A drug coating is formed by vaporizing a drug in a deposition chamber having an implantable medical device such as a stent loaded therein. A vacuum is utilized to lower the pressure within the deposition chamber, thereby reducing the temperature necessary to vaporize the drug. The drug is then deposited onto the implantable medical device while in a vapor phase to form the drug coating.
Abstract:
A drug delivery stent is formed by a metallic or polymeric tubular strut which is shaped into a generally cylindrical configuration, the tubular strut having a central lumen for containing a therapeutic substance or drug therein. The tubular strut has a continuous channel extending from the inside surface of the strut to the outside surface of the strut positioned spirally about or in a corkscrew fashion around a circumference of the tubular strut for delivering the therapeutic substance or drug to a stenotic lesion. The spiral or corkscrew channel width may be varied along the length of the strut to control elution rate and/or flexibility of the stent. The pitch of the spiral or corkscrew channel may also be varied along the length of the strut to control flexibility of the stent. The stent may be carried on a balloon of a balloon catheter to a site of a stenotic lesion where the stent is implanted.
Abstract:
A system for treating a vascular condition includes a stent having a biodegradable coating on the stent framework. The coating releases a therapeutically effective amount of therapeutic agent as a function of degradation of the coating. Also provided is a method of treating a vascular condition by placing a stent having a biodegradable coating at a treatment site and delivering a therapeutically effective amount of therapeutic agent at the treatment site as a function of degradation of the coating. Also provided is a method of improving the performance of a medical device by including a biodegradable coating on the surface of the device and releasing a therapeutically effective amount of a therapeutic agent at the treatment site as a function of degradation of the coating.
Abstract:
An electronic circuit that drives a driven element to which driving voltage or driving current is supplied. The electronic circuit includes a signal line, a unit circuit connected to the signal line, and a voltage supply line. The unit circuit includes a driving transistor, a switching element, and a capacitive element. The driving transistor includes a gate terminal, a first terminal, a second terminal connected to the voltage supply line, and a channel formed between the first terminal and the second terminal. The switching element controls electrical connection between the gate terminal of the driving transistor and one of the first terminal and the second terminal. The capacitive element includes a first electrode connected to the gate terminal of the driving transistor and a second electrode connected to the signal line. A conductive state between the first terminal and the second terminal is controlled by a gate voltage applied to the gate terminal. During a first period, which is at least part of a period during which the switching element is in an off state, a voltage level of the gate voltage changes from a first voltage level to a second voltage level by a first signal being supplied to the signal line. During a second period, which is at least part of a period during which a second signal is supplied to the signal line, the switching element is set to an on state.
Abstract:
The present invention provides a wet or dry bio-sensitized photoelectric conversion device (photodetector or photovoltaic) comprising: a stabilized biologically-derived sensitizer, such as a stablilized photosystem I (PS-I), deposited on nanowires, semiconductor material, electrodes and a support. The nanowires provide a greater surface area of the light absorption layer for better energy conversion efficiency and are chosen such as to complement the absorption spectrum of the sensitizer and protect the sensitizer from photobleaching.
Abstract:
A memory has an ECC-enabled mode and an ECC-disabled mode in which the portion of the memory dedicated to use as storing ECC in the ECC-enabled mode is used for storing general purpose information (data) in the ECC-disabled mode. This is achieved in a non-volatile memory (NVM) by having the data and the portion of the memory with the corresponding ECC on the same word line. This is particularly important in an NVM because of complication relating to erase. In the ECC-enabled mode the ECC and corresponding data should be erased, programmed, and read together in order to avoid a significant layout and performance penalty. This is best achieved by having the ECC and the data on the same word line.
Abstract:
To gain a better understanding of brain tumor angiogenesis, new techniques for isolating brain endothelial cells (ECs) and evaluating gene expression patterns were developed. When transcripts from brain ECs derived from normal and malignant colorectal tissues were compared with transcripts from non-endothelial cells, genes predominantly expressed in the endothelium were identified. Comparison between normal- and tumor-derived endothelium revealed genes that were specifically elevated in tumor-associated brain endothelium. These results confirm that neoplastic and normal endothelium in human brains are distinct at the molecular level, and have significant implications for the development of anti-angiogenic therapies in the future.
Abstract:
This invention is directed to methods, procedures and apparatus for controlling the portioning of flowable materials, particularly soft serve frozen confections, though also including other flowable products. Such other products may include soups, beverages such as milk shakes, soft drinks, and alcoholic beverages such as beers, and so forth. Typically a method for controlling the delivery of a portion of a flowable substance includes the steps of: i) Delivering the flowable substance in a stream; and ii) Noting the time for the delivery of a portion of a targeted amount; and iii) Determining the weight of the portion, and iv) Using this information to influence the delivery of further substance to meet a pre-determined target value. A preferred method is characterized by both the weight of the flowable substance being delivered and the time for the delivery of same being repeatedly or continuously assessed to achieve delivery of a pre-determined target weight or volume.
Abstract:
Two, preferably three, layered orally administrable granules containing orally administrable penicillins have desirable properties such as elegance, freedom from dust and good reconstitution. They contain an inert core, preferably of sucrose, a penicillin/binder first layer and normally and preferably a final coating layer of conventional additives such as dyes, flavors etc..Preferably the penicillin is amoxycillin trihydrate and the binder sucrose. The granules may be prepared by fluid bed granulation.