Gunze Limited

Hirotsugu Kurobe

Koji Yamauchi

Toshiharu Shinoka

Shuhei Tara

Kosuke Sawai

Hidetaka Nakayama

Saki Okumura

Yuuki Kato

A hole closing material achieves less invasive treatment for atrial septal defect with no or little possibility of problems in the late post-treatment period. The hole closing material includes two tubular bodies (first tubular portion and second tubular portion) having a mesh structure formed of a bioabsorbable linear material, and includes: a proximal connecting part connected to a first end; and a distal connecting part connected to a second end and screwed to a delivery cable. The proximal connecting part and the distal connecting part are capable of selectively achieving: 'locked' in which the proximal connecting part and the distal connecting part remain united; and “unlocked” in which the proximal connecting part and the distal connecting part do not remain united. The delivery cable passes through the substantially middle portion, is inserted into a hollow tube of the proximal connecting part, and passes out of the hole closing material in a direction from the second end to the first end.

Medical material

The present invention aims to provide a method for producing a porous tissue regeneration substrate that allows a wide choice of solvents and easy adjustment of the bulk density and pore size of the porous substrate. The present invention also aims to provide a method for producing an artificial blood vessel and an artificial blood vessel. The present invention relates a porous, tubular artificial blood vessel containing a bioabsorbable material, the artificial blood vessel including: a skin layer having a relatively small pore size as an innermost layer; and a porous layer positioned around the skin layer and having a relatively large pore size.

Artificial blood vessel, method for producing artificial blood vessel, and method for producing porous tissue regeneration substrate

Growing community of inventors

Tokushima, Japan

Hirotsugu Kurobe