292 results about "Radiation Sterilization" patented technology

A surgical instrument including a first portion and a second portion, wherein the second portion can be sterilized separately from the first portion. The first portion can comprise an anvil, a staple cartridge channel and/or staple cartridge, and a movable cutting member. The second portion can comprise electronic components configured to control the surgical instrument and/or record data collected during the use of the surgical instrument. The first portion can be sterilized using a gamma radiation sterilization process while the second portion can be sterilized using a different sterilization process, such as steam, ethylene oxide, ozone, and/or hydrogen peroxide sterilization processes, for example. As a result, the first and second portions can be sterilized separately and delivered in two separate containers. The second portion can be stored within a sealed bag and can include an electrical terminal which can penetrate the bag and communicate with the first portion.

The present invention provides, among other things, sterilization containers, inner bags, and methods for the radiation sterilization of liquid products. In particular, the invention provides sterilization containers for the irradiation sterilization of a pooled volume of liquid product greater than about, fifteen liters, and methods for the irradiation sterilization of liquid products.

A radiation sterilization method of a disposable medical device and a manufacturing method are provided, which method comprising the steps of packaging a disposable medical device, which has applied thereto with hydrophilic polymer coating, with a gas permeable packaging material, controlling a product moisture content of the thus packaged medical device by maintaining the device in a given humidity atmosphere for not less than a time at which an equilibrated moisture content is reached, and subjecting, to radiation sterilization, the medical device whose product moisture content has been controlled, so that an eluted matter is reduced in amount and a sliding performance is ensured according to the radiation sterilization method of the hydrophilic polymer-coated, disposable medical device and the manufacturing method.

The invention provides a natural polysaccharide/nano-TiO2 composite light-sensitive antimicrobial hydrogel dressing which is composed of a backing layer, a hydrogel dressing layer and a strippable layer. A synthesis method of the natural polysaccharide/nano-TiO2 composite light-sensitive antimicrobial hydrogel dressing comprises performing radiation crosslinking on raw materials, namely 10-40% of natural polysaccharide, 0.1-10% of nano-TiO2, 0.1%-5% of radiation sensitizer, 0.1%-3% of pH regulator, 0.1%-3% of surfactant and 60%-95% of water, by use of an electron beam or gamma ray by a radiation dose of 10-150kGy and at a dose rate of 10-80kGy/pass. The natural polysaccharide/nano-TiO2 composite light-sensitive antimicrobial hydrogel dressing is sheared, bagged and sterilized by radiation, and then stored for a long time. The natural polysaccharide/nano-TiO2 composite light-sensitive antimicrobial hydrogel dressing has the advantages that the maximization and optimization of the properties of the composite hydrogel, light-sensitive and antimicrobial properties are united organically, and the multiple-element composite synergic antimicrobial effect of the nano-TiO2-natural polysaccharide hydrogel is also realized; meanwhile, the composite hydrogel dressing has the characteristics of air permeability, no bonding with tissues, good flexibility and the like, and thus is suitable for protecting and treating various wounds.

Disclosed herein is a method of radiation sterilizing a plurality of medical devices.

The invention provides a method for quickly aging and tenderizing beef, which comprises the following steps: during the beef chilling aging process, cattle pancreas is prepared into homogenate; Ca2+ is utilized to activate various zymogens in the pancreas; active pancreas injection solution is prepared and directly injected into the beef, so that trypsin in the beef can decompose muscle protein; and simultaneously, by the action of ultrasonic wave, the original structure of muscle is damaged, the tenderness is improved, the aging purpose can be achieved within three to five days, and the natural aging time can be shortened by about 50%. In the aspect of keeping quality, vacuum packaging and radiation sterilization are combined, so that the storage period of the cut beef can be prolonged for 3-5 times; in the aspect of the quality of the beef, the cut beef prepared by the method has organoleptic, physicochemical and other indexes which can meet the requirements of 'GB2707 Hygienic Standard for Fresh (Frozen) Meat of Livestock'; and the cutting force is 4.2-5.3kg, and people can obtain the best mouthfeel. The method maintains the specific flavor and nutrition of the beef, and has the characteristics of quick aging speed, long shelf life, energy saving effect and high production efficiency.

A biological material for medical purpose, and method for preparation and use, the preparing method includes taking collagen or gelatin 30-70 parts, gluglucosan 20-40 parts, chondroitin sulfate 0-40 parts and chitosan 0-40 parts. The preparing process comprises the steps of stirring homogeneously, decompressing, de-aerating, drying, steeping, deionized water washing, drying, split charging, packaging, and radiation sterilization treatment.

A method for inhibiting adverse reaction of the contents of a prefilled container during a radiation sterilization procedure is disclosed. In the method, a container which is made of a material including a radiation stable polyolefin is prefilled with a medium prior to being subjected to a gamma irradiation sterilization treatment. By using a radiation stable polyolefin material as the container, such as a polyolefin with a radiation stabilizer additive, and by prefilling the container prior to the gamma irradiation treatment, the container can be effectively sterilized without adversely affecting its contents.

The invention discloses amorphous hydrocolloid dressing formed by high-energy ray irradiation proper crosslinking. The amorphous hydrocolloid dressing disclosed by the invention has good deformability, film forming property, moisture retention, biocompatibility and wound healing facilitation, and can protect various surgical incisions, cover various acute and chronic wounds and wound surfaces, prevent infection, accelerate healing and relive cicatrization. The amorphous hydrocolloid dressing is suitable for the filling covering protection on various wounds with tissue defects and for the protection and treatment of the surgical incisions and burns and scales including the wound surfaces formed by chemical burns as well as various acute and chronic wounds and wound surfaces. Moreover, through radiation sterilization, the amorphous hydrocolloid dressing can be stored for a long time. The formula of the amorphous hydrocolloid dressing disclosed by the invention comprises the following components in percentage by weight: 2-8% of sodium carboxymethylcellulose, 1-6% of chitosan and the balance of water. The amorphous hydrocolloid dressing also can comprise 0.1-0.3% of silver nitrate or silver chloride, 3-8% of polyvinyl alcohol, 15-25% of propylene glycol and the like all by weight. The amorphous hydrocolloid dressing is subjected to high-energy ray irradiation proper crosslinking and sterilization, thus the irradiation dose is 5-15KGy.

The invention provides a method for preparing radiation and aging resistant polypropylene alloys. Reactive hindered amine stabilizers are grafted on a polypropylene molecular chain by a reactive extrusion method to improve the aging resistance of materials after the alloys are subjected to radiation sterilization. The radiation and aging resistant polypropylene alloys prepared by a reactive grafting method have the advantages of uniform dispersion of the stabilizers, difficult precipitation, durable aging resistance and the like. The radiation and aging resistant polypropylene alloys have simple preparation method, have no pollution to the environment, and are easy to realize mass continuous production. The radiation and aging resistant polypropylene alloys prepared by the method can be applied in fields such as medical infusion instruments, food packaging, medicament packaging and the like; and after a radiation sterilization method is adopted for sterilization and within one year of storage period, the elongation at break of products is reduced and is less than 50 percent, the tensile strength is reduced and is less than 2MPa, and the yellowness index is increased and is less than 1. Therefore, the radiation and aging resistant polypropylenes have strong radiation and aging resistance.

A sensor device has an optical sensor (1), a container (2) and a compartmentalizer (3) that temporarily divides the container into a main space (4) and an adjacent space (5), in which the optical sensor (1) is located. The gas volume in the direct vicinity of the optical sensor (1) is reduced, as are also, consequently, the reactive products generated by radiation sterilization. The adjacent space (5) can be united with the main space (4) after the sterilization as a result of the temporary compartmentalization. The optical sensor is suitable for implementation in containers and laboratory products, such as, for example, disposable bioreactors, that are sterilized by gamma radiation.

The invention discloses a novel process of performing pine pollen fermentation by probiotics. The process comprises the following steps of: (1) collecting pine pollen, timely drying the pine pollen in the sun, sieving the pine pollen for removing impurities, and carrying out drying treatment on the sieved pine pollen; (2) carrying out sterilization treatment on the pine pollen by a 60Co gamma radiation sterilization process; (3) carrying out fermentation by lactobacillus plantarum Lp-115 and lactobacillus paracasei Lpc-37 which are taken as pine pollen zymogens; and (4) after the fermentation is ended, drying a fermentation product in a drying box at 40-50 DEG C or performing reduced pressure evaporation on the fermentation product until the water content of the product is 5%-7%. The novel process for performing pine pollen fermentation by plantarum Lp-115 and lactobacillus paracasei Lpc-37 has the beneficial effects that the solubility, mouthfeel and special flavor of the pine pollen can be significantly improved, the nutritional value of the pine pollen is improved, and the crude protein content of the fermented pine pollen is enhanced by more than 16.89%. Moreover, the amount of active probiotics in the fermented pine pollen can reach 9.21*109cfu/g, so that the pine pollen has the efficacies of pollen and probiotics, and can be taken as an ideal ingredient of a health care product.

The present invention discloses rosa sterilis var. leioclada enzymes based on liquid fermentation and a preparation method thereof. The rosa sterilis var. leioclada is washed and cleaned, the cleaned rosa sterilis var. leioclada is cut into two halves, the cut rosa sterilis var. leioclada is subjected to a radiation sterilization, the sterilized rosa sterilis var. leioclada is transferred into a fermentation tank, 1-10 parts of edible honey, 80-100 parts of mountain spring water and 1-5 parts of fermenting micro-organisms are added, the mixture is subjected to an initial fermentation, and during the period, one stirring is conducted once a day; and after a still fermentation, the initially fermented products and the stand fermented products are mixed, the mixture is subjected to the still and closed fermentation, the temperature of a fermentation barrel is kept, the mixture is subjected to a natural fermentation, and the fermented mixture is filtered to obtain rosa sterilis var. leioclada enzyme fermented liquid. During the preparation process, the nutrients of the rosa sterilis var. leioclada enzyme raw materials are not lost or destroyed, so that the nutritional and health-care values of the prepared rosa sterilis var. leioclada enzymes are significantly improved. The rosa sterilis var. leioclada enzymes are simple in preparation technology, controllable in preparation processes, and stable in quality, can be stored at room temperature, are suitable for a large-scale production, and have good market prospects.

The invention relates to a fresh-keeping flex-can of red beets and a preparation method thereof. All the recent canned red beets in the world adopt glass or iron cans, which are produced by high-temperature sterilization technology. The invention aims to solve the problems that the red beets are no longer fresh and become soft. The invention adopts non-high-temperature sterilization technology, such as radiation sterilization method, microwave sterilization method, super-high-pressure sterilization method, intense magnetic field sterilization method, ultrasonic sterilization method, chitosan sterilization method, antibiotic enzyme sterilization method and the like, to produce vacuum flex-cans with complex-film. Fresh flex-canned red beets not only are fresh, spicy, crisp and soft which maintain taste, quality and nutrition of food and overcome the disadvantages of high-temperature sterilization, but also have small sizes and light weight, thus reducing costs of transportation and warehousing and increasing additional values.

The invention relates to a medical garbage sorting recovery and harmless treatment method, comprising the following steps: (1) garbage collecting: adopting to a sealed way to collect garbage; (2) sorting: separating the chunk materials and the bulk materials which can be recycled separately; (3) crushing: crushing all the materials needed to be treated together in a sealing condition; (4) radiation sterilization: sterilizing all the crushed materials by radiation; (5) separating: according to the specific weight and magnetism of materials, separating the medical garbage into four types by a mechanical way: lighter materials, heavier materials, magnetic materials and residual materials; (6) burning and recycling: recycling the lighter materials, the heavier materials and the magnetic materials and burning the residual materials by sending the materials into a special garbage incinerator. The invention facilitates recycling of physical resources and reduces energy consumption and air pollution.

The invention discloses a preparation method of spice ultrafine powder, including the following steps: 1) the spice raw materials are put into a pre-cooling column; liquid nitrogen is poured into the pre-cooling column at the velocity of 40 to 60ml/min; the temperature is reduced to the brittle point of the spice raw material and the temperature is preserved for 5 to 30 minutes; 2) the liquid nitrogen is flowed into a breaking room to reduce the temperature to -20 to -60 DEG.C; 3) rotating speed of a grading separator is adjusted to control the particle size of broken spice to be 200 to 400 meshes; 4) the spice raw material of step 1) is sent to the breaking room for breaking by a screw conveyor; the temperature of the pre-cooling column and the breaking room is kept constantly during the breaking process; 5) the obtained spice ultrafine powder is carried out by radiation sterilization and packed and then the spice ultrafine powder product is obtained.