公开(公告)号：DE4243913C2

公开(公告)日：2000-10-05

申请号：DE4243913

申请日：1992-12-23

Applicant: GUNZE KK ,  AGENCY IND SCIENCE TECHN

Inventor： SHIMAMOTO TAKESHI ,  OKA TAKASHIGE ,  ADACHI MINORI ,  SUON HYU HYON ,  NAKAYAMA KAZUO ,  KAITO AKIRA

IPC: A61B17/00 ,  A61B17/58 ,  A61L27/00 ,  A61L31/06 ,  A61F2/00

Abstract: Bone-treating devices made of biodegradable polymers having a high-density and a high-orientation along the major axis, which have a density of 1.260 g/cm3 or more (when measured by the sink and float method) and which possess the bending strength and the bending strength-retaining characteristic defined by the following equations: A>/=B>/=23 (kgf/mm2)(1) B/A>/=0.85(2) wherein A is the initial bending strength and B is the bending strength after 90-days immersion of the devices in a phosphate buffer at 37 DEG C. and preparing the same.

公开(公告)号：DE4243913A1

公开(公告)日：1993-07-01

申请号：DE4243913

申请日：1992-12-23

Applicant: GUNZE KK ,  AGENCY IND SCIENCE TECHN

Inventor： SHIMAMOTO TAKESHI ,  OKA TAKASHIGE ,  ADACHI MINORI ,  SUON HYU HYON ,  NAKAYAMA KAZUO ,  KAITO AKIRA

IPC: A61B17/00 ,  A61B17/58 ,  A61L27/00 ,  A61L31/06

Abstract: Fractured bones are held together in order to heal the fracture by means of pins made from a biologically degradable polymer of high density and with a high degree of orientation in the direction of the main molecular axis. The pins are formed by first heating pellets of the polymer to a temperature of 140 deg. C. and then extruding the material through a die of the appropriate diameter. The polymer has a density which is equal to or greater than 1.260 grm. per CC. and its physical properties are defined by the equations which define flexural strength and fatigue flexural strength. A is equal to or greater than B which is equal to or greater than 23 kg per sq. mm. and B/A is equal to or greater than 0.85 where A is the initial flexural strength and B is the flexural strength after a 90 day immersion of the pin in a phosphate buffer solution at 37 deg. C. ADVANTAGE - No operation is required to remove the pins after the fracture has healed.

公开(公告)号：JPH05168647A

公开(公告)日：1993-07-02

申请号：JP35775291

申请日：1991-12-25

Applicant: GUNZE KK ,  AGENCY IND SCIENCE TECHN

Inventor： SHIMAMOTO TAKESHI ,  OKA TAKASHIGE ,  ADACHI MINORI ,  GEN JIYOUKIYUU ,  NAKAYAMA KAZUO ,  KAIDO AKIRA

IPC: A61B17/00 ,  A61B17/58 ,  A61L27/00 ,  A61L31/06

Abstract: PURPOSE:To provide the bone treating implement consisting of a biodecomposable polymer which has the initial strength equiv. to stainless steel or ceramic implement for joining bones, maintains the strength required for the treatment during the period necessary for the treatment and is thereafter rapidly degraded in strength and absorbed in a living body and the production thereof. CONSTITUTION:This bone treating implement is a high-density molding oriented with the molecules of the biodecomposable polymer in the major axis direction, has >=1.260g/cm density measured by a float-and-sink method and maintains the bending strength and bending strength holdability expressed by equations (1) and (2). A>=B>=23 (kgf/mm )...(1). B/A>=0.85...(2), where A is the initial bending strength of this bone treating implement and B is the bending strength after immersion measured after the bone treating implement is immersed for 90 days in a phosphoric acid buffer soln. kept at 37 deg.C.

公开(公告)号：DE68919825D1

公开(公告)日：1995-01-19

申请号：DE68919825

申请日：1989-09-01

Applicant: GUNZE KK

Inventor： KURODA TOSHIMASA ,  TANAKA YOSHIMI ,  OKA TAKASHIGE ,  YAMADA KOUICHI ,  KIYOHARA NOBUTAKA ,  SATO AKIHIRO ,  HOSOI MITSUO

IPC: D04B1/00 ,  D04B1/12 ,  D04B1/14

Abstract: A sheet for a reinforcing material is a knitted fabric consisting of reinforcing yarns and matrix yarns. The reinforcing yarns are supported in a linear state without being bent inside the matrix knitted structure in parallel with one another and in a spaced-apart relation. The matrix yarns form a matrix knitted structure while covering the linear reinforcing yarns without bending them.

公开(公告)号：DE68919825T2

公开(公告)日：1995-07-06

申请号：DE68919825

申请日：1989-09-01

Applicant: GUNZE KK

Inventor： KURODA TOSHIMASA ,  TANAKA YOSHIMI ,  OKA TAKASHIGE ,  YAMADA KOUICHI ,  KIYOHARA NOBUTAKA ,  SATO AKIHIRO ,  HOSOI MITSUO

IPC: D04B1/00 ,  D04B1/12 ,  D04B1/14

Abstract: A sheet for a reinforcing material is a knitted fabric consisting of reinforcing yarns and matrix yarns. The reinforcing yarns are supported in a linear state without being bent inside the matrix knitted structure in parallel with one another and in a spaced-apart relation. The matrix yarns form a matrix knitted structure while covering the linear reinforcing yarns without bending them.

公开(公告)号：JPH0749614B1

公开(公告)日：1995-05-31

申请号：JP50950989

申请日：1989-09-01

Applicant: GUNZE KK

Inventor： KURODA TOSHIMASA ,  TANAKA YOSHI ,  OKA TAKASHIGE ,  YAMADA KOICHI ,  KYOHARA NOBUTAKA ,  SATO AKIHIRO ,  HOSOI MITSUO

IPC: B29C51/12 ,  D04B1/14

公开(公告)号：JPH01292132A

公开(公告)日：1989-11-24

申请号：JP12323388

申请日：1988-05-19

Applicant: GUNZE KK

Inventor： TAKEHANA MOTOYUKI ,  OKA TAKASHIGE ,  SATO AKIHIRO ,  AKAMINE MASAHIRO ,  SUZUKI TADASHI

IPC: D02G3/36 ,  D02G3/40

Abstract: PURPOSE:To obtain the subject yarn excellent in compatibility of reinforcing materials with matrices, by covering a fiber yarn for the reinforcing materials with a bundling material containing a yarn or slender tape formed of the same resin as that of an injection molded matrix, heat-treating the covered yarn, melting and embrittling the bundling material. CONSTITUTION:A fiber yarn 2 for reinforcing materials is covered with a bundling material 7 (at least one kind is formed of the same resin as an injection molded matrix resin) using a covering machine 3 and heated in a heat-treating machine 10 to melt the bundling material 7. Thereby, the bundling material 7 in a molten state sticks to the surface of the yarn 2. The bundled and finished yarn (2B) is then cut by a rotary cutter 13 to afford a chopped fiber (2C).

公开(公告)号：JPS6350451B2

公开(公告)日：1988-10-07

申请号：JP9556981

申请日：1981-06-20

Applicant: GUNZE KK

Inventor： SHIOBARA TAKESHI ,  YAMAGUCHI KENJI ,  OKA TAKASHIGE ,  IWAMI HIDEAKI ,  KITAMURA TAKAO ,  NISHIKAWA KOJI ,  SUGIMOTO MASANOBU

IPC: D02G3/46 ,  D02G3/28

公开(公告)号：JPS57210069A

公开(公告)日：1982-12-23

申请号：JP9557081

申请日：1981-06-20

Applicant: GUNZE KK

Inventor： YAMAGUCHI KENJI ,  OKA TAKASHIGE ,  KAWAMURA HIKARI

IPC: D06M13/02 ,  D06M15/643

公开(公告)号：JPH09253089A

公开(公告)日：1997-09-30

申请号：JP11003396

申请日：1996-03-25

Applicant: GUNZE KK

Inventor： SHIMAMOTO TAKESHI ,  OKA TAKASHIGE ,  ADACHI MINORI

IPC: A61B17/58 ,  A61B17/00 ,  A61B17/86

Abstract: PROBLEM TO BE SOLVED: To smoothly perform screwing-in and to prevent the occurrence of damage by constituting a screwing cross hole having R at the heat part of a screw for bone fixation composed of intracelom decomposing and absorbing materials. SOLUTION: A screw head part 1 is composed of a vertex face 4 and a seat face 5, communicated through an under-neck round part 6 to a cylindrical part 7 of a thin part 2 and further communicated to a screw part 3 composed of a screw thread 8 and a screw valley 9. Then, the screw head part 1 has a screwing cross hole 10 for a driver or the like and further, the R, namely, curved line is formed at an apex part 11 of cross and a line 12 connecting the mutually adjacent apex parts to each other. The curvature radius of R part is not limited and for the purpose of use not requiring any strength comparatively, the constitution just providing the curved line at its one part is available as well. Then, the materials constituting the screw are composed of intracelom decomposing and absorbing polymers and use polylactic acid, polyglycolic acid or the coplymer of polylactic acid and polyglycolic acid having the molecular weight of about several ten thousands to one million, for example.