Other

Kohichi Imura

Junzo Tanaka

Akihiko Ichikawa

Masanori Kikuchi

Masami Kinoshita

Hideo Uemoto

Yasushi Suetsugu

Akira Myoi

Katsuhiro Chaki

Takashi Umezawa

Hiraku Yamazaki

Akimichi Hojo

Nobuaki Minowa

Tomoyuki Sugiyama

The invention is intended to introduce cells easily into a ceramics for in vivo use. Also, the invention provides a ceramics for in vivo use which has a good affinity to a living body and no harmful action on a living body. The invention relates to a porous ceramics having many almost globular pores and made of a component comprising a calcium phosphate type. These pores are brought into contact and communicated with each other to thereby exhibit permeability. The permeability was designed to be 150 centidarcy or more and 8000 centidarcy or less.

Ceramics for in vivo use

A porous ceramics body for in vivo or in vitro 1use in which a number of pores are closely distributed in three dimensional directions, adjoining pores thereof being partitioned by wall portions with respective communication ports to bring said adjoining pores into communication with each other such that a series of connected spherical pores are formed therewithin, said porous ceramics body being made of a sintered calcium phosphate body, characterized in that, within said sintered calcium phosphate body, pores each having a diameter of 5 microns (&mgr;m) or more account for 80% or more of all the pores in terms of volume whereas pores having a diameter of less than 5 microns (&mgr;m) account for less than 20% of all the pores in terms of volume as subjected to a mercury porosimeter measurement.

Porous ceramics body for in vivo or in vitro use

A calcium phosphate porous sintered body which comprises spherical pores communicating with one another substantially throughout the body with a porosity of 55% or more and 90% or less, and has an average diameter of the inter-pore communicating parts of 50 &mgr;m or more, a pore diameter of 150 &mgr;m or more, and a three-point bending strength of 5 MPa or more, and a method for producing the same.

Calcium phosphate porous sintered body and production thereof

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Hadano, Japan

Kohichi Imura