Tetsuro Kamiya, Shigeyuki Echigo, Takehisa Matsuda, Ryuichiro Yoda, Nobuko Satoh: Closing plug of a defect for medical use and a closing plug device utilizing it. Nippon Zeon, Frishauf Holtz Goodman & Woodward, March 9, 1993: US05192301 (853 worldwide citation)

The closing plug and the closing plug device are used for closing a body defect percutaneously. During the insertion into the defect, the closing plug can be deformed to a smaller size to facilitate the insertion operation and recovered to its original larger shape after it is fitted to the defect, ...

Shigeru Komatsuzaki, Toshinobu Hirayama, Tetsuo Toyokawa: Wound dressing having a porous structure. Nippon Zeon, Armstrong Westerman Hattori McLeland & Naughton, March 29, 1994: US05298015 (513 worldwide citation)

A dressing for a wound having a porous structure of continuous pores throughout the dressing made of minute filaments arranged in three dimensions and filmy links (viewed at a magnification of about 35 to 350) connecting the filaments. The porous structure has pores defined by the filmy interconnect ...

Yoichi Sugita, Takashi Kawabata: Catheter. Nippon Zeon, Armstrong Nikaido Marmelstein Kubovcik & Murray, November 13, 1990: US04969890 (484 worldwide citation)

There is provided a catheter composed of a main body fitted with a shape memory alloy member and having a liquid injection means to supply warming liquid to have said member recover the original shape thereof.

Yasushi Joh: Non-thrombogenic material comprising substrate which has been reacted with heparin. Nippon Zeon, Armstrong Nikaido Marmelstein & Kubovcik, May 11, 1982: US04329383 (246 worldwide citation)

Non-thrombogenic material comprising a base polymer treated with heparin, the improvement in which the heparin is covalently bonded with the base polymer through only one acetal bond or hemiacetal bond at each bonding site between the heparin and the base polymer.

Nishikawa Ken, Yoshizawa Hidetoshi: Forceps type electrical operative instrument. Nippon Zeon, August 19, 2004: JP2004-229976 (212 worldwide citation)

PROBLEM TO BE SOLVED: To provide a forceps type electrical operative instrument preventing shortcircuit between electrodes and surely cutting a tissue piece.SOLUTION: This forceps type electrical operative instrument 2 is provided with a catheter tube 4 to be inserted in the body, a cup-shaped first ...

Nobuyuki Shioya, Yoshimitsu Kuroyanagi, Yasumi Koganei, Ryuichiro Yoda: Wound dressing. Nippon Zeon, Armstrong Nikaido Marmelstein Kubovcik & Murray, March 5, 1991: US04997425 (135 worldwide citation)

A wound dressing having a porous layer with a good affinity to tissue of organisms comprising (a) a first layer to be placed on the wound surface having pores of 20 to 500 .mu.m in diameter, and 1 to 10 mm thick, and (b) a second layer remote from the wound surface having pores not more than 20 .mu. ...

Kamiya Tetsuro, Echigo Shigeyuki, Matsuda Takehisa, Yoda Ryuichiro, Saitoh Nobuko: Plug for closing an opening for a medical application, and device for the closure plug making use thereof. Nippon Zeon, July 20, 1990: FR2641692-A1 (122 worldwide citation)

A closure plug and a device for the closure plug are used in order to close an opening by the percutaneous route. During insertion into the opening, the closure plug can be deformed to a smaller size in order to facilitate the operation and can resume its original shape after it has been adapted to ...

Teruo Hirose, Takashi Kawabata: Apparatus for assisting blood circulation. Nippon Zeon, Millen White Zelano & Branigan, September 12, 1995: US05449342 (114 worldwide citation)

An apparatus for assisting blood circulation includes an inflow tube which can be inserted into the right atrium from a peripheral blood vessel or which can be inserted into the left atrium from a peripheral blood vessel through the right atrium and the foramen ovale of the interarterial septum. An ...

Hiroyuki Watanabe, Kohkichi Noguchi, Toshio Kase, Shuichi Akita: Process for making diene polymer rubbers. Nippon Zeon, Sherman and Shalloway, October 7, 1986: US04616069 (88 worldwide citation)

A process for making a diene polymer rubber which comprises reacting an active diene polymer rubber having alkali metal and/or alkaline earth metal terminals, which is obtained by polymerizing a conjugated diene monomer alone or together with an aromatic vinyl monomer in a hydrocarbon solvent, using ...

Kou Imachi, Iwao Fujimasa, Kazuhiko Atsumi: Medical valve apparatus. Nippon Zeon, Armstrong Westerman Hattori McLeland & Naughton, May 9, 1995: US05413599 (85 worldwide citation)

Disclosed is a medical valve apparatus having a valve assembly which comprises a valve seat and a movable valve, and which is arranged in a duct of a medical appliance, wherein a plurality of through holes for the passage of a fluid are formed through the valve seat, the movable valve is composed of ...