摘要:
A medical dilating instrument (100) includes a needle body (10) having a pointed needle tip (11), an elongated guide portion (30) formed so that a tip (31) thereof is duller than the needle tip (11), and a trunk portion (50) having a larger diameter than the guide portion (30). A cannular needle (20) is configured by connecting the needle body (10) and the guide portion (30), and a dilator (40) is configured by connecting the guide portion (30) and the trunk portion (50). The dilator (40) includes a diameter-enlarging portion (42) that increases in diameter from a tip end side toward a base end side. The diameter-enlarging portion (42) is provided on one or both of the guide portion (30) and the trunk portion (50).
摘要:
The present invention provides a sheath for gastrostoma (1), a sheathed dilator, a gastrostomy catheter kit and a method of splitting a sheath for gastrostoma. The sheath for gastrostoma (1) includes a sheath body (11) in which a gastrostomy catheter (2) is inserted and a handle (12). The sheath for gastrostoma (1) lowers the insertion resistance of a gastrostomy catheter when inserted in a fistula before insertion of the gastrostomy catheter in the fistula for replacement in the patient's body. According to the invention, a sheath for gastrostoma, a sheathed dilator, a sheath for gastrostoma with insertion aid, a gastrostomy catheter kit and a method of splitting a sheath for gastrostoma which can lower the insertion resistance during placement of a catheter in the patient's body, facilitate air supply control of an endoscope and stabilize endoscopic visual field during surgery are provided.
摘要:
A catheter of the invention includes an elongated flexible tubular main body; a plurality of manipulation wires inserted through the tubular main body and having tips connected to a distal part of the tubular main body; a manipulation-part main body provided at a base end of the tubular main body; and a bending manipulation part. The bending manipulation part has an engagement part engaging with base ends of the manipulation wires, and individually applies pulling force to the plurality of manipulation wires through pulling operations so as to bend the distal part of the tubular main body. The bending manipulation part is provided so as to be movable with respect to the manipulation-part main body. The path lengths of the plurality of manipulation wires from the tips thereof to the engagement part are simultaneously increased or decreased when the bending manipulation part and the manipulation-part main body move relative to each other.
摘要:
The present invention provides an endoscopic clip device and a clip in which a connection operation between a clip and an operation wire is facilitated, and in which a procedure can be quickly performed by reducing an exchange frequency of a treatment instrument body. An endoscopic clip device (100) according to the present invention includes a clip (110) that has a plurality of arms (120) for gripping a living body tissue and a locking portion (130), and a treatment instrument body that comprises an elongated sheath (10) and an operation wire (20) in which a chunky distal connection portion (50) is disposed in a distal end. In a state where the distal connection portion (50) is accommodated in an accommodation portion (134), the operation wire (20) is drawn to a proximal side in a forward/backward movement direction so that the arms (120) are closed to grip the living body tissue. In a state where the arms (120) are closed, the operation wire (20) is further drawn to the proximal side so that the distal connection portion (50) causes a protruding portion (140) to be deformed outward and the accommodation portion (134) is opened. In this manner, the distal connection portion (50) is drawable from the accommodation portion (134).