A flexible or elastic brachytherapy strand that includes an imaging marker and/or a therapeutic, diagnostic or prophylactic agent such as a drug in a biocompatible carrier that can be delivered to a subject upon implantation into the subject through the bore of a brachytherapy implantation needle has been developed. Strands can be formed as chains or continuous arrays of seeds up to 50 centimeters or more, with or without spacer material, flaccid, rigid, or flexible.

A device that includes a scaffold composition and a bioactive composition with the bioactive composition being incorporated therein or thereon, or diffusing from the scaffold composition such that the scaffold composition and/or a bioactive composition captures and eliminates undesirable cells from the body a mammalian subject. The devices mediate active recruitment, sequestration, and removal or elimination of undesirable cells from their host.

A prosthetic implant with improved properties, suitable for implantation to the human body, comprising a composite comprising a base material and a plurality of additives, wherein the additives are selected from radiolucent additives and/or hyperechoic additives; or wherein the additives are selected to reduce the solvent concentration by between 5%-95%; or wherein the additives are selected to increase the elastic modulus by more than 20%; or wherein the additives are selected for combining these effects.

The present invention provides a bone cement composition. The bone cement composition includes a developing particle, an acrylic polymer, and an acrylic monomer, wherein a specific surface area of the developing particle is in a range from about 0.1 m.sup.2/g to about 5 m.sup.2/g. The present invention further provides a bone cement composition kit. The bone cement composition kit includes a power component and a liquid component, respectively stored in separate containers, wherein the power component includes a developing particle and an acrylic polymer, and the liquid component includes an acrylic monomer. A specific surface area of the developing particle is in a range from about 0.1 m.sup.2/g to about 5 m.sup.2/g.

The disclosure provides a molecular sieve/fiber composite material comprising molecular sieves and a fiber, the molecular sieves are distributed on the fiber surface and directly contact the fiber surface; the particle diameter D90 of the molecular sieves is 0.01 to 50 m, the particle size D50 of the molecular sieves is 0.005 to 25 m; the molecular sieves are distributed uniformly on the fiber surface of the fiber. The disclosure also provides a preparation method for the molecular sieve/fiber composite material and various applications. The molecular sieve/fiber composite material has high strength, elastic recovery ability, and dimensional stability, making the composite material strong and durable. The molecular sieve/fiber composite material has a simple structure, low cost, strong stability, high repeatability of performance, and high practical efficiency, and provides the application in the fields of hemostasis, beauty, deodorization, sterilization, water purification, air purification, and radiation resistance.

An approach is provided for a three-dimensional (3D) printing method for forming a 3D object. The approach provides for printing a structure of the 3D object by depositing a thermoplastic material, in which the thermoplastic material is radiolucent. The approach provides for printing one or more radio-opaque markers by depositing another material, which includes at least a radio-opaque material. The approach integrates the one or more radio-opaque markers with the structure of the 3D object.

Biocompatible and implantable in the human body plastic material, for the obtainment of a device that can be implanted in the human body or a spacer device in order to treat a bone or a joint location, including an acrylic resin or polyethylene (PE) or low density polyethylene or high density polyethylene or ultra-high molecular weight polyethylene (UHMWPE) or polypropylene or polyamide or polyetheretherketone (PEEK) or a thermosetting resin or a mixture of the same, wherein the material can be molded and includes at least one pharmaceutical or medical substance; device implantable in the human body or spacer device for treating a bone or a joint location, obtained by the material above and method for manufacturing the material according to the present invention.

The application discloses a composition for hard tissue repair comprising a monomer (A), a polymer powder (B) and a polymerization initiator (C), wherein the polymer powder (B) comprises a polymer powder (B-x) having an aspect ratio of 1.10 or more, and the cumulative ratio of powder particles having aspect ratios of 1.00 or more and less than 1.10 in all of the powder particles contained in the composition for hard tissue repair is 75 cumulative % or less, as well as, a kit for hard tissue repair comprising three or more members, in which each of the components of the monomer (A), the polymer powder (B) and the polymerization initiator (C) contained in this composition for hard tissue repair are divided and contained in the members in an optional combination.

A method for forming a porous implant suitable for a cavity from which tissue has been removed includes incorporating a gas or a pore forming agent into an alginate solution; transferring the alginate solution with the gas or the pore forming agent into a solidified body mold having a desired shape with an outer surface; removing the water from the solidified body; and subjecting the solidified body to a conversion solution to convert the outer surface to a less soluble alginate creating a composition comprising the outer surface having less soluble alginate and a core having more soluble alginate.

Polymeric compositions are described comprising a biocompatible polymer including a biodegradable linkage to a visualization agent and a non-physiological solution; wherein the biocompatible polymer is soluble in the non-physiological solution and insoluble in a physiological solution. Methods of forming the solutions and polymers are disclosed as well as methods of therapeutic use.