Terumo Kabushiki Kaisha

Katsuhiro Shirakawa

Hiroshi Yagi

Noriyuki Tamai

Hiraku Murayama

Toshiaki Takagi

Katsuaki Soma

Tomokane Kurosawa

Fuminori Tsuboi

Takayuki Mori

Shigeki Numata

Yoshizo Ishizuka

Toshihiko Asao

Satoru Kanuka

A protector which is used to cover a distal portion of a guide wire protruding from a distal opening of a tube body includes a first half body and a second half body which are movable between an open state and a closed state. Each of the first half body and the second half body includes a guide wire sandwiching and holding portion which mutually sandwich and hold the distal portion of the guide wire cooperatively in the closed state of the protector. Each of the first half body and the second half body also includes a tube body sandwiching and holding portion which mutually sandwich and hold the tube body cooperatively in the closed state of the protector.

Protector

The guide wire is a guide wire includes a distal portion and a main body portion. This guide wire is provided with a first curve portion; a second curve portion included on the distal side of aforesaid first curve portion and curved to the opposite direction with respect to aforesaid first curve portion; a third curve portion included on the distal side of aforesaid second curve portion and curved to the opposite direction with respect to aforesaid second curve portion, wherein a line contacting with both aforesaid first curve portion and aforesaid third curve portion has an obtuse angle with respect to an axis line of aforesaid main body portion.

Guide wire

A device (such as guidewire inserter) for easily and certainly inserting a medical long item having a curved tip into a tube such as catheter and sheath includes a tubular member having a bore for passage of a guidewire. The tubular member has a slit cutting across the wall over the total length of the tubular member. The proximal end of the tubular member has an aperture. The proximal end of the aperture has an open part and a connecting part adjacent thereto for the holder tube. There is a pair of wing-like protruded pieces projecting in the mutually opposite directions at both sides of the open part. The distal end of the tubular member has on its outer surface a pair of protruded rims, which project in the mutually opposite directions.

Device for introduction of long item

Guide wire for catheter

Disclosed herein is a device (such as guidewire inserter) for easily and certainly inserting a medical long item having a curved tip into a tube such as catheter and sheath. The guidewire inserter is a tubular member having therein a bore for passage of a guidewire. The tubular member has a slit cutting across the wall thereof over the total length thereof. The tubular member has at the proximal end thereof an aperture, which results from the slit expanding toward the proximal end. The tubular member has at the proximal end of the aperture an open part and a connecting part adjacent thereto for the holder tube. There are a pair of wing-like protruded pieces projecting in the mutually opposite directions at both sides of the open part. The distal end of the tubular member has on its outer surface a pair of protruded rims, which project in the mutually opposite directions with respect to the central axis of the tubular member. When the distal end of the tubular member is connected by insertion into the bore at the proximal end of the tube, such as sheath, the protruded rims come into contact with the inside of the hub.

An electrode lead, which is used as an implantable electrode lead and a symptom of disconnection of which can be found and detected at an early stage before complete disconnection. Also, an implantable medical instrument which uses this electrode lead safely is provided. More specifically, in an implantable electrode lead obtained by connecting conductor wiresandwith large electrical resistances and conductor wiresandwith small electrical resistances parallel to each other, when one of the low-strength conductor wiresandis disconnected, a change in electrical resistance of the implantable electrode lead can be detected and informed. Hence, a symptom before total disconnection of the implantable electrode lead can be detected.

Implantable electrode lead and implantable medical instrument using the implantable electrode lead

A flexible, thin implantable electrode lead can maintain a desired portion of a lead body ( ) in a desired shape conforming to a body portion. The lead body ( ) includes a conductor coil ( ) obtained by helically winding at least one insulation-coated electrical conduction conductor wire, an insulating sheath ( ) made of an electrically insulating resin material and covering the outer surface of the conductor coil, and a flexible reinforcing tube ( ) formed to deform into a desired shape in the cavity of the conductor coil.

Growing community of inventors

Fujinomiya, Japan

Katsuhiro Shirakawa