摘要:
PROBLEM TO BE SOLVED: To provide a bioabsorbable material for filling bone defects, which is a flocculent three-dimensional structure having a system for releasing chemical compositions so as to effectively deduce bone reconstruction capability and having flexibility that improves fitting to an affected part, and also expected to show high cell invasion efficiency, and provide a method of producing the same.SOLUTION: A substance containing a biodegradable resin as a principal component and further containing a siloxane is dissolved in a solvent, and spinning is performed according to the electro-spinning method using a solution adjusted to a viscosity to generate a fibrous substance having the average diameter of 10 μm or more. This spinning is performed with air blowing to thereby generate the flocculent three-dimensional structure formed of fibrous substance containing a biodegradable resin as a principal component, further containing a siloxane and having the average diameter of 10 μm or more. The flocculent three-dimensional structure is expected to show high cell invasion efficiency, because a two-dimensionally structured non-woven fabric shows high cell invasion efficiency when it has an average diameter of 10 μm or more.
摘要:
PROBLEM TO BE SOLVED: To provide a matrix for use in producing a ligament or tendon, particularly an anterior cruciate ligament, ex-vivo for implantation into a recipient in need thereof. SOLUTION: There is provided the silk-fiber-based matrix having a wire-rope geometry. The silk-fiber-based matrix is seeded with pluripotent cells that proliferate and differentiate on the matrix to form a ligament or tendon ex-vivo. A bioengineered ligament comprises the silk-fiber-based matrix seeded with pluripotent cells that proliferate and differentiate on the matrix to form the ligament or tendon. COPYRIGHT: (C)2011,JPO&INPIT
摘要:
A biocompatible tissue implant, as well as methods for making and using such an implant, is provided. Preferably, the tissue implant is bioabsorbable. The tissue implant comprises one or more layers of a bioabsorbable polymeric foam having pores with an open cell structure. The tissue implant also includes a reinforcement component which contributes both to the mechanical and the handling properties of the implant. Preferably, the reinforcement component of the instant invention is bioabsorbable as well. The tissue implant of the present invention can be used in connection with the surgical repair of soft tissue injury, such as injury to the pelvic floor.
摘要:
PROBLEM TO BE SOLVED: To provide a composite scaffold structure body for tissue regeneration that has enough high rigidity and strength in both its longitudinal and radial directions, so it is hard to deform, for instance, to be crushed radially and destroy contained cells during the treatment and operation of its implantation, etc. in a patient. SOLUTION: Coiled polylactic acid (PLA) fibers are woven into the composite scaffold structure body made of PLA resin fibers, getting entangled with the crossing parts of the structure. Here, the use of either polycaprolacton resin (PCL) or the copolymer of lactic acid and glycol acid (PLGA) as the binder is preferable. By weaving the coiled PLA fibers into the scaffold structure, entangling them with its crossings, it becomes possible to easily control the coil pitch and increase rigidity and strength in the radial direction of the structure as much as 2 to 10 times. COPYRIGHT: (C)2009,JPO&INPIT