| 摘要 |
This instrument for the continuous injection of a liquid medicine has a tubular body (1) provided therein with a liquid medicine flow passage (11) formed so as to extend in the direction of the longitudinal axis thereof. The tubular body (1) is provided at one end thereof with a liquid medicine injection section (12) having a check valve (121) therein, and at the other end thereof with a liquid medicine discharge section (13). A predetermined quantity of a fluid resin (3) which does not have a bonding capability with respect to a specific material alone is packed in the front end of the tubular body (1), and a thin wire rod (4) made of a specific material and having a predetermined diameter is buried linearly in the fluid resin, and one end (41) of this thin wire rod is passed through the fluid resin into the interior of the tubular body while the other end (42) thereof is passed through the liquid medicine discharge section and drawn to the outside. A bore (111) is formed so as to extend through the wall of the tubular body and is enclosed with a balloon (2) made of an elastic material, and the circumferential edges of the balloon are fastened air-tightly to the outer circumferential surface of the tubular body. In order to use this instrument in practice, a predetermined quantity of a liquid medicine is injected through the liquid medicine injection portion into the balloon, and the thin wire rod is drawn to the outside of the tubular body, an indwelling fitting being then fixed to the liquid medicine discharge portion. After the thin wire rod has been drawn out, the liquid medicine flows out continuously for a long period of time through a thin bore formed in the fluid resin. |
