摘要:
An electrode catheter is introduced into a hollow anatomical structure, such as a vein, and is positioned at a treatment site within the structure. Tumescent fluid is injected into the tissue surrounding the treatment site to produce tumescence of the surrounding tissue which then compresses the vein. The solution may include an anesthetic, and may further include a vasoconstrictive drug that shrinks blood vessels. The tumescent swelling in the surrounding tissue causes the hollow anatomical structure to become compressed, thereby exsanguinating the treatment site. Energy is applied by an electrode catheter in apposition with the vein wall to create a heating effect. The heating effect causes the hollow anatomical structure to become molded and durably assume the compressed dimensions caused by the tumescent technique. The electrode catheter can be moved within the structure so as to apply energy to a large section of the hollow anatomic structure. In a further aspect, the location of the electrodes is determined by impedance monitoring. Also, temperature sensors at the treatment site are averaged to determine the site temperature.
摘要:
A method and system of sample aliquot storage for automated immunochemistry or chemistry instruments are provided. The method and system provide a sample aliquot storage unit having a sample storage wheel for storing sample vessels containing sample aliquots in a chilled enclosed environment, which are accessible by both a sample pipettor of a sample aliquoting station and a pick-and-place gripper. The pick-and-place gripper transports the sample vessels containing sample aliquots to multiple independent reagent pipetting stations respectively for sample aspiration of subsequent assay, and thereafter transports the sample vessels containing remaining sample aliquots back to the sample storage wheel to be stored in the chilled environment for reflex testing. When all the tests are completed, the pick-and-place gripper transports the sample vessels to a waste storage area.
摘要:
A method for selective heating of subsurface structures in material such as tissue includes a cooling device for thermally quenching or removing heat from the top surface of tissue during or just after delivering pulsed energy to target or subsurface structures or tissue, a preferred embodiment of the invention using dynamic cooling, to quench the thermal energy conducted from the targeted structure into surrounding tissue.
摘要:
An electrode catheter is introduced into a hollow anatomical structure, such as a vein, and is positioned at a treatment site within the structure. Tumescent fluid is injected into the tissue surrounding the treatment site to produce tumescence of the surrounding tissue which then compresses the vein. The solution may include an anesthetic, and may further include a vasoconstrictive drug that shrinks blood vessels. The tumescent swelling in the surrounding tissue causes the hollow anatomical structure to become compressed, thereby exsanguinating the treatment site. Energy is applied by an electrode catheter in apposition with the vein wall to create a heating effect. The heating effect causes the hollow anatomical structure to become molded and durably assume the compressed dimensions caused by the tumescent technique. The electrode catheter can be moved within the structure so as to apply energy to a large section of the hollow anatomic structure. In a further aspect, the location of the electrodes is determined by impedance monitoring. Also, temperature sensors at the treatment site are averaged to determine the site temperature.
摘要:
The present invention is directed to golf ball cover compositions containing blends of high or low carboxylic acid based copolymers and ethylene copolymers such as ethylene alkyl acrylates. The carboxylic acid groups of the blends are neutralized with metal cations. Golf balls produced with the cover molded thereon exhibit desired properties of distance and high coefficient of restitution without substantially sacrificing and/or improving characteristics like playability and durability when compared to existing covers comprising ionomeric resin blends.
摘要:
A compatibilizer for polymer blends is presented. The compatibilizer comprises a sulfonated polystyrene and may be used to prepare miscible blends of the sulfonated polystyrene with two or more polymers having polar groups, e.g., polyamides, polyethers, polyesters, polysulfones and polyamines. The sulfonated polystyrene compatibilizer may be used in conjunction with a counterion.
摘要:
A thermoplastic polymer which possesses excellent mechanical properties at both room and elevated temperatures is obtained by reacting an acyl sulfate with a block copolymer composed of at least one conjugated diene block and one alkenyl arene block. The block copolymer is first selectively hydrogenated and thereafter modified by grafting sulfonic acid functional groups primarily in the alkenyl arene blocks. The mechanical properties may be varied and controlled by varying the degree of functionalization (amount of sulfonation), and the degree of neutralization of the sulfonic acid groups to metal sulfonate salts.
摘要:
The present invention is directed to a novel method of fabricating and composition for chalcogenide cathode-active electrodes. The method comprises the steps of:(a) combining the cathode-active material in particulate form with about 0.1 to about 10 percent by weight of a neutralized sulfonated ionomer, based on the total weight of the cathode-active material and the ionomer, and about 10 to about 90 percent by weight of solvent, based on the total weight of the cathode-active material, ionomer and solvent, wherein said solvent is a cosolvent system which includes one or more solvents selected from the group consisting of normal and aromatic hydrocarbons and one or more solvents selected from the group consisting of alcohols, amines, amides, nitriles, nitro-compounds, lactones and acetols;(b) forming the desired electrode configuration with the resulting mixture; and(c) drying the formed electrode so as to volatilize the solvent.The composition consists essentially of(a) a chalcogenide material in a particulate form consisting of one or more compounds selected from a group consisting of the sulfides, selenides and tellurides of titanium, zirconium, hafnium, niobium, tantalum, molybdenum and vanadium; and(b) less than about 10 weight percent of a neutralized sulfonated elastomeric polymer having less than about 6 mole percent neutralized sulfonate groups per 100 grams of said polymer.
摘要:
This invention relates to a process for the manufacture of a neutralized phosphonated ethylene-propylene copolymer having about 1 to about 150 mmoles of PO.sub.3 H.sub.2 groups which are neutralized with a counterion selected from the group comprising metal cations, ammonium or amines. Elastomeric compositions used for elastomeric articles could include the neutralized phosphonated ethylene-propylene copolymer having about 20 to about 200 parts by weight of a non-polar process oil per 100 parts of the phosphonated copolymer and about 25 to about 300 parts by weight of a filler per 100 parts of the phosphonated copolymer, wherein a preferential plasticizer can also be incorporated into the composition. These blend compositions can be readily processed on conventional plastic fabrication equipment into elastomeric articles having excellent physical properties and desirable rubber characteristics.
摘要翻译:本发明涉及制备中和的具有约1至约150mmol PO 3 H 2基团的中和膦酸化乙烯 - 丙烯共聚物的方法,所述PO 3 H 2基团用选自金属阳离子,铵或胺的抗衡离子中和。 用于弹性体制品的弹性体组合物可包括中和的膦酸化乙烯 - 丙烯共聚物,每100份膦酸化共聚物具有约20至约200重量份的非极性加工油,约25至约300重量份的填料 每100份膦酸共聚物,其中也可以将优先增塑剂掺入组合物中。 这些共混组合物可以容易地在常规塑料制造设备上加工成具有优异的物理性能和期望的橡胶特性的弹性体制品。
摘要:
This invention is an improved method and device for treating varicose veins 200 or the greater saphenous vein 202. The method comprises the use of infrared laser radiation in the region of 1.2 to 1.8 um in a manner from inside the vessel 200 or 202 such that the endothelial cells of the vessel wall 704 are damaged and collagen fibers in the vessel wall 704 are heated to the point where they permanently contract, the vessel 200 or 202 is occluded and ultimately resorbed. The device includes a laser 102 delivered via a fiber optic catheter 300 that may have frosted or diffusing fiber tips 308. A motorized pull-back device 104 is used, and a thermal sensor 600 may be used to help control the power required to maintain the proper treatment temperature.