EMBOLUS FORMING IN-VIVO INDWELLING COIL

摘要

The invention provides an embolus forming in-vivo indwelling coil having high pliability, capable of being reliably indwelled in a predetermined region, and allowing re-indwelling operation to be reliably performed, thus having high safety and high operability. The embolus forming in-vivo indwelling coil of the invention is characterized by comprising a coil main body having pliability, and an expansion suppressing member of water- swellable high polymer material that suppresses expansion of the coil main body by becoming swelled when absorbing water, and that is disposed on an inner peripheral surface and/or an outer peripheral surface of the coil main body. In the embolus forming in-vivo indwelling coil of the invention, it is preferable that the water-swellable high polymer material forming the expansion suppressing member be made of a polyvinyl alcohol series polymer.