Biodegradable, cross-linked polymer particle embolics and methods of making the same are described. The particle embolics can be used as embolization agents.

A preparation method of calcium peroxide-mediated in situ crosslinkable hydrogel as a sustained oxygen-generating matrix, includes: a) reacting a natural or a synthetic polymer with Traut's reagent (TR) in a solvent, and synthesizing a polymer derivative having thiol group in backbone of the polymer derivative; and b) mixing and reacting a solution of the polymer derivative having thiol group with calcium peroxide (CaO.sub.2), and thereby forming a hydrogel, wherein in the step b), disulfide bonds (—S—S) are induced between backbones of the polymer derivative having thiol group attached by decomposition of calcium peroxide (CaO.sub.2), and thereby in situ crosslinking is formed.

Biodegradable, cross-linked polymer particle embolics and methods of making the same are described. The particle embolics can be used as embolization agents.

Multi-angle radiographic imaging enables 3D visualization of internal surgical targets like solid-tumors, heart vessels, blocked glands or any bodily cavities like fallopian or Eustachian tubes for diagnostics and surgery planning. Those images are dimensionally precise and easily replicated as life-forms with 3D printing for exact modeling. The “negative” aspects of the images are the diseased tissues requiring excision, as in a solid-tumor example. Needle biopsies are routine and can be radiographically guided. Similarly, guided needle delivery of a magnetic surgical fluid containing fullerenes into a target site, such as a solid tumor is less invasive than laparoscopic techniques. Introducing an external magnetic field force can then be used to propel, rotate and maneuver fullerenes into cellular matter or into tissue. Without such external force from the external magnetic field, the suspension of nanoparticles remains harmless due to their atomic scale, inertia and intrinsic repulsion from contact with nearby matter. Notably, fullerenes are hydrophobic and can move freely in biologic space (or interstitially) including amongst water molecules without contact. However, if energized and propelled by a controlled external magnetic source, the nanoparticle could readily penetrate cells, tissues, bone, or biological material. In addition to magnetic launching of the nanoparticles, rotation of the fullerene particles would create millions of nanoscale abrasive structures that can grind down larger structures like tissues, organs, or bones. By example, oscillating or reciprocal computer-controlled magnetic forces in radiographically defined space would activate fullerenes, inducing momentum and rotation that can exenterate a tumor, while chemically cauterizing small feeding vessels for hemostatic control and absent any damage to nearby normal, non-target matter. Essentially, biological material targeted with magnetically manipulated fullerenes could be ablated with a microscopic “sharpness” unattainable with conventional instrumentation. Magnetic forces are mathematically articulated and understood in highly precise terms, wherein objects subject to magnetic energy are controllable regarding mass, force and velocity. After completion of the surgical procedure, the magnetic fullerene fluid can be aggregated and removed along with flushing of attendant debris with a syringe or similar instrument.

Biodegradable, cross-linked polymer particle embolics and methods of making the same are described. The particle embolics can be used as embolization agents.

Provided herein are foamable compositions comprising (1) a base, in aqueous suspension, (2) a viscosity modifier component, and (3) a surfactant component. In preferred embodiments, the foamable composition may further comprise a salt. Additional components that may optionally be present in the formable composition include sugars and sugar alcohols, colorants, antioxidants, preservatives, and other excipients generally known to those skilled in the art. Also provided herein are kits for producing a gaseous form. Also provided herein are methods for detecting the presence of leaks or defects in anatomical tissue or organ.

Wound treatments and wound treatment methods are provided that includes particles of decellularized fish skin. A predetermined percentage of at least a first portion of the particles of decellularized fish skin have a greatest dimension within a predetermined size threshold maximum and a minimum size threshold that is effective to preserve a matrix structure of the decellularized fish skin and to promote cellular regenerative ingrowth into a wound.

The present invention relates to methods for adhering tissue surfaces and materials and biomedical uses thereof. In particular the present invention relates to a method for adhering a first tissue surface to a second tissue surface in a subject in need thereof, comprising the steps of adsorbing a layer of nanoparticles on at least one of the tissue surfaces, and approximating the surfaces for a time sufficient for allowing the surfaces to adhere to each other. The present invention also relates to a method for adhering a material to a biological tissue in a subject in need thereof, comprising the steps of adsorbing a layer of nanoparticles on the surface of the material and/or the biological tissue and approximating the material and the biological tissue for a time sufficient for allowing the material and the biological tissue to adhere to each other.

Film-forming gel compositions, useful in creating conformable and flexible gel bandages, can be formulate from a film-forming polymer, an amine-rich adhesion promoter, and a volatile solvent. The gel compositions form relatively thick films when dried on tissue, and can exhibit enhanced breathability to promote wound healing. In some cases, the film-forming gel composition can include lidocaine.

Adhesive articles include a substrate; and a hot melt processable pressure sensitive adhesive on the substrate. The hot melt processable pressure sensitive adhesive is a (meth)acrylate-based copolymer that is the reaction product of a reaction mixture that is free of acidic or basic monomers, and includes an alkyl (meth)acrylate, a hydroxyl-functional (meth)acrylate, and a photocrosslinker. The (meth)acrylate-based polymer is prepared in a thermoplastic package.