The invention provides a hydrogel for in-vivo release of medication comprising at least one medication, wherein the surface of the hydrogel comprises a coating such that the surface has one or more sub-surfaces with permeability that is at least 2× higher than the average permeability of the entire surface, wherein the hydrogel has an elastic modulus of between 50 and 1000 kPa.

A material deposition device includes a solution supply component, a gas supply component, and a co-axial discharge mechanism. The co-axial discharge mechanism includes a solution discharge mechanism, and a gas discharge mechanism co-axial with the solution discharge mechanism. The material deposition device further includes an alignment component that aligns the solution discharge mechanism in a center of the gas discharge mechanism; and an orifice plate with a number of turbulence inducing structures that induce turbulence in gas exiting the gas discharge mechanism.

The invention discloses an energy-providing bone-repair degradable porous scaffold, a preparation method thereof, and an application thereof. The invention obtains an energy-based biomaterial solution by compositing gelatin, a polyatomic acid and derivatives thereof, a dibasic alcohol and derivatives thereof, and a tribasic alcohol and derivatives thereof in a chemical cross-linking manner by using diisocyanate, and further obtains a porous scaffold through a drying method. The porous scaffold can avoid the problem of an acidic microenvironment caused by in vivo implantation of the existing biomaterial and keep the activity of an osteoblast cell, thereby improving the rate of repairing the damaged bone tissue with the energy-based biomaterial. The porous scaffold of the invention can be used as a filling material for bone repair in a surgical operation.

Proposed are a hydrogel containing a polymer nanofiber into which a sulfate group is introduced, and a method for preparing the same. The hydrogel contains polymer compound nanofibers into which a sulfate group is introduced, the polymer compound nanofibers may be connected to each other by a crosslink to form a network structure, and gelling may proceed as water is filled in empty space of the network structure. According to an embodiment, it is possible to provide a hydrogel containing a polymer nanofiber into which a sulfate group is introduced, which is highly utilizable as an artificial extracellular matrix by providing a cell culture scaffold which exhibits high cell adhesiveness and of which the three-dimensional structure can be controlled.

Disclosed is a multi-chamber applicator comprising an aqueous gelatin solution and an aqueous cross-linking agent solution in separate chambers.

An object of the invention is to provide a cartilage regenerative material that is capable of regenerating bone and cartilage using cells. Provided is a cartilage regenerative material including a cell construct, which includes biocompatible polymer blocks and stem cells, in which a plurality of the biocompatible polymer blocks are disposed in gaps between a plurality of the stem cells.

Systems and methods are disclosed for cosmetic augmentation by forming a biocompatible cross-linked polymer having a multi-phase mixture with a time release catalyst; injecting the mixture into a patient as a viscous fluid; after injection, activating the catalyst to cross-link the polymer after a predetermined period after injection into a patient; and augmenting soft tissue with the biocompatible cross-linked polymer.

Provided are a hydrogel composition with high viscoelasticity and a bioink composition including the hydrogel composition. The hydrogel composition according to an embodiment is composed of natural biocompatible substances and thus is not toxic, but has high viscosity, resulting in high mechanical stability or long persistence. Thus, the hydrogel composition may be usefully utilized as a bioink composition for bioprinting, a support in tissue engineering, or a soft tissue filler.

The present invention concerns phase changing injectable formulations for organ augmentation containing active agents, such as bioactive cell populations, and methods of making and using the same.

The disclosure provides bone graft materials, methods for their use and manufacture. Exemplary bone graft materials comprise combining a radiopaque component with a cancellous bone component to produce a bone graft material, wherein the cancellous bone component comprises native osteoreparative cells. Methods for treating a subject with the bone graft material are also provided.