Gunze Limited

Ethicon, Gmbh

Ethicon Endo-surgery, Inc.

Johnosn & Johnson Medical Kabushiki Kaisha

Tomohiko Asahara

Koji Yamauchi

Nobuhiro Kagaminuma

Yoshito Ikada

Susumu Miyamoto

Keisuke Yamada

Hiroshi Abe

Masayoshi Kuwabara

Noboru Ujiie

Kohichi Iwai

Kazuhiko Fujitsu

Wataru Hirakawa

Keiji Nakano

The present invention provides an artificial dura mater which comprises an amorphous or low crystallinity polymer as a constituent component and which prevents the cerebrospinal fluid leakage.

Artificial dura mater

The present invention provides an artificial dura mater characterized by comprising at least a sheet of a biodegradable and bioabsorbable synthetic polymer and having a storage modulus at ordinary temperature of from 1&#xd7;10to 5&#xd7;10(Pa); and a process for producing an artificial dura mater characterized by dissolving a lactide/&#x3b5;-caprolactone copolymer (in a molar ratio ranging from 40/60 to 60/40) in a solvent, filtering the resultant solution and casting the same followed by air drying.

Artificial dura mater and process for producing dura mater

The present invention provides an artificial dura mater prepared from an biodegradable and bioabsorbable synthetic polymer sheet and having a total light transmittance of 30% or more as defined by JIS K7105, a haze (cloudiness value) of 80% or less as defined by JIS K7105 or a specular glossiness at 60&deg; (Gs 60&deg;) of 10-20% as defined by JIS Z8741.

Artificial dura

The present invention provides an artificial dura mater characterized by comprising at least a sheet of a biodegradable and bioabsorbable synthetic polymer and having a storage modulus at ordinary temperature of from 1&times;10 to 5&times;10 (Pa); and a process for producing an artificial dura mater characterized by dissolving a lactide/&egr;-caprolactone copolymer (in a molar ratio ranging from 40/60 to 60/40) in a solvent, filtering the resultant solution and casting the same followed by air drying.

A grooved channel serving as perfusion leading structure is formed between the opening of a perfusion tube at its front end and the bipolar electric coagulating and dissecting portions at the front ends of arms.

Bipolar electric coagulating and dissecting tweezers

Embedding a perfusion passage pipe in the surface at the inside of one of the arms of a tweezers partially or entirely and concurrently, fastening a housing portion in the rear of the grip portion in a range of 90.degree. to 170.degree. angled from the tip portion to the central axis of the grip portion of an arm.

Bipolar surgical tweezers

The invention provides a needle holding arrangement for only the gripping of a needle within the body cavity. There is provided a suture fixing means for gripping or fixing a suture with a needle on an outer peripheral surface of the needle-holder shaft. After piercing and passing of the needle through the tissue in the body, a knot of the suture can be made within the body cavity, and saturation and ligation of tissues in the body and end closure and ligation of blood vessel and gall duct can also be performed.

Endoscopic needle holder

The present invention provides a deep suturer suitable for suturing a deep portion and a narrow portion which are difficult to be applied by a normal direct hand operation such as transoral operation. The suturer comprises an end needle-holding portion (B) for holding a suture needle, a holder portion (A) for operating the end needle-holding portion (B) and a connection portion (C) for operatively connect the end needle-holding portion (B) and holder portion (B) is provided with a disk head (4) which is rotated integral with a needle-holding portion (5) the holder portion (A) is provided with a handle (2), and the connection portion (C) is provided with a rod (7) having one end connected to the handle (2) through a connecting mechanism (18) and the other end connected to the disk head (4), the rod (7) being axially slidably inserted by of a spring force.

Growing community of inventors

Tokyo, Japan

Tomohiko Asahara