Asahi Intecc Co., Ltd.

Tokai University Educational System

Masaaki Nihonmatsu

Yukiko Enami

Manabu Shimogami

Jun Koizumi

Shinichi Goto

Naohiko Miyata

Noriyuki Nakayama

Asami Hosoda

A catheter that does not require a fixing tool for fixing an end of a reinforcing body to an inner layer and does not require a separate marker to allow a user of the catheter to visually recognize a position of the catheter during procedures. The catheter includes a catheter main body having an inner layer that is a hollow tubular body, a braid that covers an outer periphery of the inner layer from a proximal end of the inner layer to a distal end of the inner layer, and an outer layer that covers an outer periphery of the braid. At least one end portion of the braid is folded under itself to form a folded part, and an end of the braid is in contact with the inner layer and is arranged in a lowest layer of the folded part.

Catheter with a folded braid

Catheter

A catheter includes a catheter shaft having a body portion and a bend that extends distally from a distal end of the body portion. In the catheter, a braid is embedded in the catheter shaft. The braid has a first wire and a second wire woven together. The first wire has a high tensile strength and the second wire has a low tensile strength that is lower than the high tensile strength of the first wire. When viewed from a proximal end of the catheter shaft, the bend forms an arc that extends in a winding direction of the first wire.

In a medical equipment, a hollow shaft body is made of single-wound or plurally-wound coil line elements, and has a cylindrical tip portion formed on a distal end of the hollow shaft body, and a manipulative grip connected to a proximal side portion of the hollow shaft. At least one of an inner surface mid an outer surface of the hollow shaft, and at least one of an inner surface and outer surface of the tip portion are provided with a screw-like concave-convex streak of projection. The hollow shaft body has a diameter-reduced portion at the manipulative grip having a transparent portion, through which the diameter reduced portion is visible from outside.

Vascular catheter

A catheter body includes a coil body () which is formed by winding or stranding metal wires () and having a distal portion () and a proximal portion. The distance between coils () adjacent to each other in the distal portion () is greater than the distance between coils () adjacent to each other in the proximal portion (or). The pitch in the distal portion () of the coil body () is substantially or nearly the same as the pitch in the proximal portion (or).

Growing community of inventors

Kasugai, Japan

Masaaki Nihonmatsu