Olympus Corporation

Ebara Corporation

Daido Tokushuko Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Toshiba Tec Kabushiki Kaisha

Toshiba Energy Systems & Solutions Corporation

Ebara Environmental Plant Co., Ltd.

Kei Matsuoka

Hideyuki Sakamoto

Masatoshi Sato

Takamitsu Sunaoshi

Shuichi Nagato

Norihiro Yoshinaga

Yosuke Sato

Norihisa Miyoshi

Shigeki Ueta

Michio Okabe

Shunsuke Hattori

Hiroshi Yakuwa

Masahiro Ohno

Ena Ishii

Masaya Ota

Takayuki Hatanaka

Manabu Noguchi

Hiroyuki Morishita

Eiji Ishikawa

Keisei Shimoda

Yuichi Iida

Junichi Ichikawa

Akira Uchino

Yoshiyuki Sawada

Toshiyuki Umezawa

Akiko Yokoyama

Kyohei Yamashita

Sho Kudo

Hirokazu Kajiwara

Takayoshi Kawagishi

A needle holder for holding a curved needle to which a suture thread is connected. The needle holder includes a flexible tube; and a grasper provided at a distal end of the flexible tube. The grasper includes a first jaw having a groove, and a protrusion at a distal end portion of the first jaw; and a second jaw movably connected to the first jaw. The grasper can hold the curved needle between the second jaw and the protrusion of the first jaw, and can hold a part of the suture thread between a surface of the groove and the second jaw such that another part of the suture thread passes through a gap formed between another surface of the groove and the second jaw. The protrusion has a hook surface for hooking the suture thread extending outside the groove.

Needle holder and method of using same

The present invention relates to a Ni base alloy having sufficient strength at high temperatures and high corrosion resistance at high temperatures in a high-temperature composite corrosive environment in which chlorination or sulfidation occurs simultaneously with high-temperature oxidation, without excessive cooling or surface protection. According to the present invention, a Ni base alloy having high-temperature strength and corrosion resistance includes Cr in a range of from 25 to 40 weight %, Al in a range of from 1.5 to 2.5 weight %, C in a range of from 0.1 to 0.5 weight %, W of 15 weight % or less, Mn of 2.0 weight % or less, Si in a range of from 0.3 to 6 weight %, Fe of 5% or less, and Ni of rest except inevitable impurities. When strength at high temperatures is allowed to be small, W is in a range of from 0 to 8%, and Si is in a range of from 0.3 to 1% or from 1 to 6%. In order to enhance strength at high temperatures, W is in a range of from 8 to 15, and Si is in a range of from 0.3 to 1% or from 1 to 6%.

Nickel-based heat-resistant alloy

Growing community of inventors

Tokyo, Japan

Kei Matsuoka