Asahi Intecc Co., Ltd.

Osamu Katoh

Other

C-i-medic Co., Ltd.

Asahi Intell Co. Ltd.

Masashi Momota

Tomihisa Kato

Naohiko Miyata

Kazuyuki Shimada

Minoru Saruta

Taiichiroh Meguro

A medicinal liquid injection catheter includes a flexible main body, a needle-like tubular member, a medicinal liquid supply device, and a balloon. The tubular member is inserted in the main body and an end portion of the tubular member projects from a side hole provided in the main body. The medicinal liquid supply device accommodates a medicinal liquid, and is connected to the tubular member to supply the medicinal liquid through the tubular member. The balloon is attached to an outer portion of the main body and the balloon is expansible in substantially the same direction as a direction in which the portion of the tubular member projects. The medicinal liquid injection catheter additionally includes first and second guide wires. The second guide wire projects from the main body in a direction which intersects a direction in which the first guide wire projects from the main body.

Medicinal liquid injection catheter

Embodiments of the present invention relate to an injection devices that inject a specified reagent with cells into lesions and other areas of body tissue. Particular embodiments comprise a main tube with a projection hole on its exterior, an axially-moveable needle tube with a needle at its tip, a reagent supplier configured to supply a specified reagent into the needle tube, and axially-moveable guide wires.

Reagent injection device

In a medical guide wire, a rear half of a leading bulge portion (ellipsoidal helical spring)forms a truncated cone shaped front catheter engagement portion. An inner wall of a balloon catheterforms a flared end portionA which absorbably fits into the front catheter engagement portiondue to the physical adhesion so to provisionally connect the balloon catheterto the front catheter engagement portion. The medical guide wireand the balloon catheterare inserted into the blood vessel with one single step procedure when the medical guide wireis introduced into the blood vessel to place the balloon portionat the stricture blood vessel area (P).

Medical device including guide wire and balloon catheter for curing a coronary artery

A core wire of a guide wire has a plurality of twisted thin threads, a distal end of the core wire being diametrically reduced to be a thinnest tip, which has twisted ends united together. A resin layer is coated on the outer surface of the core wire. The thinnest tip of the leading end of the core wire is squelched into a flat-shaped configuration so as to form a flat portion. The flat portion is shaped into a multiple-stepped structure in which the thickness of the flat portion is progressively reduced by three steps or more in approaching the distal end of the core wire.

Guide wire and a method of making the same

In a guide wire is for a catheter, a core wire prepared by twisting a plurality of thin threads in which a leading end of the core wire is diametrically reduced to be a thinnest tip. A resin layer is coated on an outer surface of the core wire. The thinnest tip is treated by tightly uniting together a twisted ends of the thinnest threads.

Process of making a guide wire for a catheter

A guide wire for medical purposes having a proximal section and a distal section and formed by inserting all or a portion of a slender and flexible shaft into a coil and fixing the shaft to the coil, wherein the coil is a multiple-wire coil consisting of at least two pieces of wire, at least one of these pieces of wire is made of a material which is opaque against radioactive rays such as X-rays, and a portion of the coil closer to the distal section of the shaft is a single-wire coil consisting of only a composite wire made of the radiopaque material.

Manufacturing process of coil

A guide wire for medical purposes having a proximal section and a distal section and formed by inserting all or a portion of a slender and flexible shaft into a coil and fixing the shaft to the coil, wherein the coil is a multiple-wire coil consisting of at least 2 wire rods, at least one of these wire rods is made of a material which is opaque against radioactive rays such as X ray, and a portion of the coil close to the distal section of the shaft is a single-wire coil consisting of only a wire rod made of the radiopaque material.

Growing community of inventors

Kamakura, Japan

Masashi Momota