41results about How to "Prevent reformation" patented technology

A method and system for shrinking dilatations of a body, removing excess, weak or diseased tissue, and strengthening remaining tissues of the lumen walls. A catheter is disposed near the dilatation and fixed in position by inflatable occlusion balloons. Body fluids present in the occluded dilatation are evacuated and treatment fluid is exuded under pressure into the dilatation. Pressure is maintained by the treatment fluid while energy is applied by the catheter to heat the treatment fluid, causing the lumen walls to absorb the treatment fluid. Additional energy is then applied so as to preferentially heat the lumen wall tissues which have absorbed the treatment fluid, while at the same time treatment fluid is circulated to cool the inner surface of the lumen walls. The dilatation is occluded, a saline solution is introduced and absorbed into the lumen-wall tissue in the occluded region of the dilatation and then heated by application of radio frequency (“RF”) or other energy in order to soften only the lumen-wall tissue of the dilatation, the dilatation is shrunk by application of a chilled saline solution and a vacuum, and additional RF or other energy is emitted to ablate, further shrink, and harden only the lumen-wall tissue of the dilatation, without destroying the inner surface of the lumen or other tissues of the body beyond the lumen walls, thereby promoting growth of epithelial cells.

The present invention relates to improved methods for making and using bioadhesive, bioresorbable, anti-adhesion compositions made of inter-macromolecular complexes of carboxyl-containing polysaccharides, polyethers, polyacids, polyalkylene oxides, multivalent cations and / or polycations. The polymers are associated with each other and are then either dried into membranes or sponges or are used as fluids or microspheres. Bioresorbable, bioadhesive, antiadhesion compositions are useful in surgery to prevent the formation and reformation of post-surgical adhesions. The compositions are designed to breakdown in vivo, and thus be removed from the body. Membranes are inserted during surgery either dry or optionally after conditioning in aqueous solutions. The antiadhesion, bioadhesive, bioresorptive, antithrombogenic and physical properties of such membranes and gels can be varied as needed by carefully adjusting the pH and / or cation content of the polymer casting solutions, polyacid composition, the polyalkylene oxide composition, or by conditioning the membranes prior to surgical use. Multi-layered membranes can be made and used to provide further control over the physical and biological properties of antiadhesion membranes. Membranes and gels can be used concurrently. Antiadhesion compositions may also be used to lubricate tissues and / or medical instruments, and / or deliver drugs to the surgical site and release them locally.

The present invention relates to improved methods for making and using bioadhesive, bioresorbable, anti-adhesion compositions made of intermacromolecular complexes of carboxyl-containing polysaccharides, polyethers, polyacids, polyalkylene oxides, multivalent cations and / or polycations. The polymers are associated with each other, and are then either dried into membranes or sponges, or are used as fluids or microspheres. Bioresorbable, bioadhesive, anti-adhesion compositions are useful in surgery to prevent the formation and reformation of post-surgical adhesions. The compositions are designed to breakdown in-vivo, and thus be removed from the body. Membranes are inserted during surgery either dry or optionally after conditioning in aqueous solutions. The anti-adhesion, bioadhesive, bioresorptive, antithrombogenic and physical properties of such membranes and gels can be varied as needed by carefully adjusting the pH and / or cation content of the polymer casting solutions, polyacid composition, the polyalkylene oxide composition, or by conditioning the membranes prior to surgical use. Multi-layered membranes can be made and used to provide further control over the physical and biological properties of antiadhesion membranes. Membranes and gels can be used concurrently. Antiadhesion compositions may also be used to lubricate tissues and / or medical instruments, and / or deliver drugs to the surgical site and release them locally.

The present invention provides deicing compositions which are environmentally benign, a process for producing the composition from certain waste process streams, and methods of deicing and / or anti-icing.

The invention relates to the generation of user selected pages from an internet site and the delay in the reformatting of the same following a user selection of a new data event i.e. the selection of a new page which is to be displayed. In accordance with the invention, upon a user selection, reformatting of the page is delayed either for a predesignated time interval from the previous page reformatting or until all or a predefined amount of the data for the new page has been received. This allows the processor to be controlled hence preventing delays and / or errors in navigational functions and also can reduce the generation of “flicker” on the on-screen display.

The present invention provides novel deicing and anti-icing compositions and methods based on by-produce of off-specification materials from biodegradable and renewable sources and which also can be used in a variety of other services.

The present invention provides methods for use of novel deicing and anti-icing compositions based on by-produce of off-specification materials from biodegradable and renewable sources and which also can be used in a variety of other services.

Deicing compositions comprised of hydroxyl-containing organic compounds and / or organic acid salts are disclosed.

The present invention provides a method of preparing a surface of a silicon wafer for formation of HSG structures. The method contemplates providing a wafer having at least one HSG template comprising polysilicon formed in BPSG, the HSG template being covered by silicon dioxide. The wafer is treated with a cleaning agent to clean the surface of the wafer. Next, the wafer is treated with a conditioning agent. The conditioning agent removes native oxide from the HSG template without excessively etching structural BPSG. Preferably, the conditioning agent also removes a thin layer of polysilicon on the HSG template. The wafer is then transferred to a process chamber for HSG formation.

Deicing compositions comprised of hydroxyl-containing organic compounds and / or organic acid salts are disclosed.

Deicing compositions comprised of hydroxyl-containing organic compounds and / or organic acid salts are disclosed.

The present invention related to a method and therapeutic composition for the treatment of coagulation disorders comprising administration of a lipoprotein associated coagulation inhibitor.

The present invention relates to a process for preparing polyamides, comprising a hydrolytic polymerization and at least two extraction steps which are not in immediate succession.

The present invention relates to a process for preparing polyamides, comprising a hydrolytic polymerization, a postpolymerization and an extraction.

The invention relates to an antithrombotic and thrombosis-eliminating preparation, which is characterized by being prepared from the following raw material medicines in part by weight: 30 to 60 parts of astragalus, 3 to 6 parts of leech, 10 to 20 parts of safflower, 10 to 20 parts of red paeony root, 5 to 15 parts of root of red-rooted salvia and 10 to 20 parts of peach kernel. Compared with the prior art, the antithrombotic and thrombosis-eliminating preparation has the advantages that: based on the acute phase formation characteristics and pathological change of ishemic stroke, a compound Chinese medicine with effects of scattering and eliminating stasis, promoting dieresis and diminishing swelling is used to treat acute ishemic stroke; and lots of clinic tests prove that the antithrombotic and thrombosis-eliminating preparation has obvious treatment effects of preventing blood clotting, dissolving blood clots, expanding blood capillaries, relieving arteriospasm, lowering blood viscosity, improving flowing speed of microcirculating blood.

The present invention provides a method for producing a coated stainless steel member, comprising: performing Wood's strike nickel plating on a stainless steel substrate, and then performing cationic electrodeposition on a formed Wood's strike nickel plating layer.

Deicing compositions comprised of hydroxyl-containing organic compounds and / or organic acid salts are disclosed.

The present invention provides a method of preparing a surface of a silicon wafer for formation of HSG structures. The method contemplates providing a wafer having at least one HSG template comprising polysilicon formed in BPSG, the HSG template being covered by silicon dioxide. The wafer is treated with a cleaning agent to clean the surface of the wafer. Next, the wafer is treated with a conditioning agent. The conditioning agent removes native oxide from the HSG template without excessively etching structural BPSG. Preferably, the conditioning agent also removes a thin layer of polysilicon on the HSG template. The wafer is then transferred to a process chamber for HSG formation.

A process to transform solid, low-level, radioactive waste produced from oil and gas production into a form that may be safely disposed of, such as by re-injection into geologic formations in the Earth.

The invention relates to a descaling agent for a phosphate rock floatation device and a preparation method of the descaling agent. The descaling agent is prepared from the following components in percentage by weight: 10.00-30.00% of a main component sodium hydroxide, 0.10-5.00% of a chelating agent phosphonate, 0.05-1.00% of a penetrant octyl sulfonate, 0.08-2.00% of a scale inhibitor polyacrylate and the balance of water. The descaling agent for the phosphate rock floatation device provided by the invention is exclusively used for the phosphate rock floatation device including a stirring groove, a flotation machine (column), a flotation machine, an ore pulp tube and a water turn pipeline. The descaling agent for the phosphate rock floatation device provided by the invention is simple in formula, has the descaling and scale inhibiting functions, can be recycled and is nearly free from sewage discharge and environment-friendly.

The invention is a single use delivery device capable of delivery of an agent (e.g., vaccine, drug, medicament, etc.) in a controlled manner and without requiring specialized skill in administering delivery of such agent. The delivery device is configured to be filled on-site and in the field with a dose of an agent, while remaining sterile and preventing the potential for contamination during thefilling process. The delivery device is configured to be fitted with various types of administering components, including, but not limited to, needles, nozzles for producing spray or droplets, and the like. The delivery device is further configured to be rendered incapable of reuse followings its intended use of delivering the fluid agent to a patient, thereby preventing reuse of the device and reducing the risk of the spreading blood-borne diseases through reuse.

Deicing compositions comprised of hydroxyl-containing organic compounds and / or organic acid salts are disclosed.

The present invention relates to a process for preparing polyamides, comprising a hydrolytic polymerization, a postpolymerization and an extraction.

The invention provides nickel plated aluminum powder and a preparation method and application thereof. The aluminum powder consists of aluminum granules, a nickel metal plating layer is connected outside the aluminum granules, and an organic material protective layer is connected outside the nickel metal plating layer. The preparation method comprises the following steps of: a, putting the aluminum powder into ammonium hydroxide solution to perform alkali washing; b, mixing first complexing agent solution and ammonium hydroxide solution uniformly, and adding the aluminum powder subjected to the alkali washing in the step a into the mixed solution, or adding the aluminum powder subjected to the alkali washing in the step a into a fluoride to perform pretreatment; c, pre-plating: mixing thefirst complexing agent solution and the ammonium hydroxide solution uniformly, adding a second complexing agent and a third complexing agent into the mixed solution, mixing the solution uniformly, and then adding the aluminum powder pretreated in the step b into the mixed solution to perform pre-plating; d, soaking the aluminum powder pre-plated in the step c into chemical nickel plating solutionto perform one-time or two-time nickel plating, washing the aluminum powder by water, and drying the washed aluminum powder to obtain the nickel plated aluminum powder; and e, soaking the nickel plated aluminum powder of the step d into organic acid ester mixed solution, and filtering and drying the nickel plated aluminum powder to obtain a product.

Carpet with self-twisted loop piles that has an appearance and aesthetics similar to cut pile construction with improved durability and methods for making the same are provided.