2514 results about "Sponge" patented technology

A surgical sponge detection system includes a plurality of surgical sponges (2) having radio frequency identification tags (1) securely attached thereto and a non-optical hand-held reader (40) for detecting the sponges by detecting the tags (1). Also disclosed is a device (30) for automatically counting, weighing, and calculating blood loss contained within, soiled surgical sponges (2) which includes a cabinet with an opening (3) at the top through which sponges (2) are deposited, a reader (6) which scans each sponge (2) entered and determines sponge type from a tag (1) affixed to each sponge (2), and a disposable bag (8) into which the sponges (2) are deposited. The disposable bag (8) is removably mounted to a weighing scale (10); there is also a rear door (9) from which the disposable bag (8) can be easily removed, a rechargeable battery (11), a shelf (12) for unused disposable bag storage, a control unit (4) which processes data received from reader (6) and scale (10) and instantaneously calculates total weight of liquid contained within sponges entered, a display panel (5) continuously displays the number and type of sponges entered during a given procedure as well as the total weight of liquids retained in those sponges. There is a means for automatically determining the weight of the sponges when dry which includes a non-optical scanner means (6) which can read an indicating means (1) on the sponges (2) even when the indicating means (1) is covered with blood or other body fluids.

Shaped, preferably porous, inorganic bodies are provided which are prepared from a reactive blend. In accordance with one preferred embodiment, the solution is absorbed into a porous sacrificial substrate such as a cellulose sponge. The solution-saturated substrate is heated and an oxidation-reduction reaction occurs thereby forming an inorganic solid. A shaped, inorganic body is formed in situ. Optional, but preferred additional thermal treatment of the shaped, inorganic body removes the organic substrate, leaving an inorganic body that faithfully mimics the porosity, shape, and other physical characteristics of the organic substrate. Inorganic substrates may also be used to good effect. Large varieties of shaped bodies can be prepared in accordance with other embodiments of the invention and such shapes find wide use in surgery, laboratory and industrial processes and otherwise. The invention also provides chemically and morphologically uniform powders, including those having uniformly small sizes.

The invention is directed to a crumbly, water-absorbing, soil-like hydrogel. The hydrogel comprises finely comminuted mineral substances, such as igneous rock; water-soluble alkali-silicate; solid and liquid nutrient additives; and ballast, bound in a cross-linked polymer. The hydrogel is structured like a sponge and absorbs water and liquids when in contact with water or aqueous liquids. The mineral substances present in the hydrogel may be present in an amount of at least 30% by weight of the dried hydrogel. Also, the invention encompasses methods of producing acidic and neutral to weakly alkaline hydrogels.

The present invention provides a hemostatic porous sponge comprising a matrix of a fibrous biomaterial and particles of a fluid absorbing, particulate material adhered to said matrix material, a method of producing these sponges and their use for wound healing.

A method of preparing a collagen sponge comprises mixing air into a collagen gel, so as to obtain a collagen foam which is dried. From the dried product thereby obtained, collagen sponge is obtained by isolating parts of sponge with a chamber diameter of more than 0.75 mm and less than 4 mm, or parts with an average chamber diagonal dimension of 3 mm. The collagen sponge may be used as a material for sealing wounds, possibly with a coating comprising a fibrin glue, such as a combination of fibrinogen, thrombin and aprotinin. A device for extracting a part of a collagen foam and for degenerating another part of the collagen foam to a collagen gel is disclosed. An elongated collagen sponge having a through-going hole or bore and a flexible wall may be used for re-establishing walls in a mammalian gastrointestinal funnel or trachea system.

A synthetic pet chew toy and scent-training aid, resembling desired mushroom species, that is formed of nontoxic, elastomeric materials, and a method for training one or more dogs to detect desirable fungi species, terrestrial or subterranean, using the toy as a scent-training aid. The toy can be formed with a hollow interior and with a plurality of small holes opening in the top and/or sides of the toy to form channels for scent dispersal to the ambient air. A threaded, opening at the base of the toy, into which a removable, threaded plug can be inserted, allows the hollow chamber to be filled with dried mushrooms, fresh mushrooms, or sponge/foam/cotton fiber soaked in mushroom extract, for use as a dog scent-training aid to locate wild-growing fungi. The pet chew toy can be filled with food treats or catnip for scent-related games like “hide and seek”, or bells for auditory enticement.

The invention relates to a preparation for a tussore silk fibroin solution and a concentration method thereof. Fibroin fiber of tussores like tussah, japanese tusser, costor silkworm, and Actias selene Hubner are decontaminated, degummed and then dipped into a dissolving liquid containing neutral salt and alcohol materials, treated by ultrasonic for 5 to 120 minutes, and then dissolved under the temperature between 30 and 98 DEG C to obtain a silk dissolving fibroin. The fibroin dissolving liquid is dialyzed and desalted to obtain a tussore fibroin aqueous liquid; then the aqueous liquid is dewatered and concentrated by a semipermeable membrane by using a high water-absorbing matter to obtain the high concentration tussore fibroin solution with a molecular weight of 15 to 250 kDa and a concentration of 6 to 35 percent. As the neutral salt is used, the large extent hydrolyzation of acid and alkali to the silk fibroin is avoided; therefore, the molecular weight of the obtained tussore silk protein is higher; the tissore silk fibroin can be used for manufacturing tussore silk fibroin gel, powder, films, porous sponges, regenerated fibers, and the like. The invention provides new material for the fields of biomedicine, medicine, make-up, food, health product, and the like.

A hemostatic tissue sealant sponge and a spray for acute wounds are disclosed. The sponge comprises hydrophobically modified polymers that anchor themselves within the membrane of cells in the vicinity of the wound. The seal is strong enough to substantially prevent the loss of blood inside the boundaries of the sponge, yet weak enough to substantially prevent damage to newly formed tissue upon recovery and subsequent removal of the sponge. In examples, the polymers inherently prevent microbial infections and are suitable for oxygen transfer required during normal wound metabolism. The spray comprises hydrophobically modified polymers that form solid gel networks with blood cells to create a physical clotting mechanism to prevent loss of blood. In an example, the spray further comprises at least one reagent that increases the mechanical integrity of the clot. In another example, the reagent prevents microbial infection of the wound.

The invention relates to a preparation method of porous bacteria cellulose sponge. A bacterial cellulose hydrogel membrane and an ice crystal are completely mixed, pre-frozen is carried out at subzero 20 to subzero 50 DEG C and are prepared into a homogeneous dispersed system. At last, a freeze-drying method is used for preparing the porous bacteria cellulose sponge. Through the invention, bacteria cellulose sponge material containing large holes is simply, rapidly and efficiently manufactured by the invention, and the application of nanometer bacteria cellulose in the field of the tissue engineering stent can be greatly developed.

The invention relates to a water culture method in raising seedlings of vegetable cavernosum, belonging to the technical field of vegetable seedling. The invention is characterized in that, the method has the matching between the water culture facility in raising seedlings of vegetable cavernosum and a nutrient solution specialized for seedlings; year-round production of water cultured vegetable seedlings is realized. The water culture method in raising seedlings of vegetable cavernosum has the advantages that, the growth process of the invention does not need to adopt convention nursery substrate; the drawbacks of conventional plug seedlings that the conventional plug seedlings are easy to be influenced by the nursery substrate and the conventional plug seedlings are not suitable to be used as water cultured vegetable are overcome; the nutrient required by the growth of the cultivated seedlings is provided by the special nutrient solution; the invention has the advantages of neat seedlings, no recovery period, short seedling period, high strong seedlings rate and other excellences.

The invention discloses an environment-friendly light porous simulated soil cultivation medium body and a preparation method thereof. The cultivation medium body is of a continuous integrated porous simulated soil sponge structure and is prepared from 1-10 parts by weight of polyurethane binding body, 1-50 parts by weight of filler, 0.01-50 parts by weight of auxiliary material and 0-5 parts by weight of embedded functional matter. The filler is at least one of organic filler, inorganic filler and organic and inorganic composite filler. The auxiliary material is a mixture of at least two of a surface active agent, a catalyst, a chain extender, a fire retardant and a foaming agent. The embedded functional matter is at least one of plant seeds, a rooting agent, a soil sanitizer, a straw fermenting agent, potash fertilizer, phosphatic fertilizer, nitrogenous fertilizer and compound fertilizer. The prepared simulated soil cultivation medium body is low in weight, high in aperture ratio, good in hydrophilia and water retention performance and excellent in mechanical property, and can be applied to the fields of vertical greening, roof greening, urban landscaping, indoor greening, intelligent greening, slope restoration, gardens and horticulture, ecological remediation, ecological management, soilless culture and the like.

The invention discloses a three-dimensional porous cartilage extracellular matrix sponge scaffold made of natural cartilage, which can compound cells further to construct tissue engineered cartilage, and can be used for clinically repairing cartilage defects. In the invention, conditions which can fully perform cell extraction and form a porous scaffold matrix are provided by processing cartilage into cartilage microfilaments, and then the cell extraction and solidification and/or strengthening treatment are performed to obtain the three-dimensional porous cartilage extracellular matrix sponge scaffold which is completely decellurized. The antigenicity and cell components are removed in the natural cartilage, and an extracellular matrix component of the cartilage is retained to obtain the scaffold with appropriate pore diameter and porosity, suitable degradation rate, good biocompatibility and certain biomechanical strength. The scaffold has the advantages of broad material sources, low cost, simple and feasible preparation technology, and good repetitiveness; and the scaffold can be widely applied in the field of tissue engineering and has good clinical application prospect.

The present invention provides a three-dimensional tissue equivalent for in-vivo and in-vitro uses. The three dimensional tissue equivalent of the present invention is a non-contractile cellular sheet cultured over a porous scaffold using a macromass culturing technique, for example where the cellular sheet is entirely on one side of a porous sponge. In one embodiment, the present invention provides a dermal wound dressing that comprises a high density cellular sheet of dermal fibroblast cells.

The invention relates to artificial skin prepared from purely natural materials and having gradient hole structure and property and a preparation method thereof. The artificial skin comprises an epidermal layer and an enderonic layer, wherein the epidermal layer and the enderonic layer both have the gradient in the structure and the property simultaneously and the thicknesses of the epidermal layer and the enderonic layer are between 0.5 millimeters and 1.5 millimeters and can be regulated as required; the epidermal layer is a thin film which has the functions of water prevention, air permeation and enderon protection and has compacter structure, and the dimensions of holes are smaller than 5 micrometers; the epidermal layer has degradability, degrading period between four months and six months and good elasticity and ductility; the enderonic layer of the artificial skin is prepared from collagen and polysaccharide in a simulating way, in a sponge shape, porous and mutually communicated, the dimensions and the distribution of the holes are in gradient distribution from top to bottom, and apertures are increased from 20 micrometers to 300 micrometers; the enderonic layer has different degrading periods from top to bottom and is also in the gradient distribution, degrading speed is increased from top to bottom, and the degrading periods are accelerated from four months to two weeks; and the dimensions and the distribution of the holes and the gradient of degradation are controlled by the component transformation and a multi-layer overlying processing technology.

This invention relates to filterable composite adsorbents comprising one or more adsorbent components and one or more filtration components, and methods for preparing and using same. More particularly, this invention pertains to filterable composite adsorbents and filterable composite adsorbent products which are suitable for use in filtration applications, and which comprise one or more microparticulate or colloidal adsorbent components selected from the group consisting of silica gel, fumed silica, neutral clay, alkaline clay, zeolite, solid catalyst, alumina, adsorbent polymer, alkaline earth silicate hydrate, and combinations thereof, which bear the property of adsorption, which are intimately bound to one or more functional filtration components selected from the group consisting of biogenic silica (e.g., diatomite, rice hull ash, sponge spicules), natural glass (e.g., expanded perlite, pumice, expanded pumice, pumicite, expanded obsidian, expanded volcanic ash), buoyant glass, buoyant polymer, cellulose, and combinations thereof, which bear a distinguishing porous and intricate structure and buoyancy suitable for filtration.

The present invention provides sodium alginate and polyvinyl alcohol compound sponges material, wherein the component (wt) are as follows: sodium alginate 1-11%; polyvinyl alcohol 5-25%; inorganic acid 3-15%; methyl aldehyde 3-15%, aerating powder 1-5%; and distilled water 29-87% The preparation of the material are as following: heating sodium alginate, polyvinyl alcohol and distilled water for dissolving with heating temperature 80-100 DEG C; adding inorganic acid, methyl aldehyde and aerating powder for mixed stirring; heating mixed solution for forming with hot forming temperature 60-90 DEG C and hot forming time from 4 to 12 hours; And clean hot formed product. The present invention is provided with advantages like low cost, environment protection, simple process etc. The obtained material can be applied on wound dressing, vacuum sealing drainage, and hemostasia material etc. because of the good biocompatibility of polyvinyl alcohol and sodium alginate.