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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0126431 (1993-09-24) |
| 발명자 / 주소 |
|
| 인용정보 | 피인용 횟수 : 348 인용 특허 : 0 |
Catheter having a high torque capability adapted to be inserted into and through a lumen of a blood vessel comprising a flexible elongate tubular shaft having proximal and distal extremities. The shaft is comprised of a torque tube extending substantially the entire length of the shaft. The torque t
Catheter having a high torque capability adapted to be inserted into and through a lumen of a blood vessel comprising a flexible elongate tubular shaft having proximal and distal extremities. The shaft is comprised of a torque tube extending substantially the entire length of the shaft. The torque tube has a cylindrical wall with at least one flexible portion therein with the flexible portion being characterized in that at least one slot is provided in the cylindrical wall subtending an angle of less than 360°. A flexible sleeve encloses the torque tube and serves to cover the flexible portion while permitting the torque tube to bend in the vicinity of the slot a predetermined amount which is less than that which would create a permanent strain in the torque tube.
A catheter having a high torque capability adapted to be inserted into and through a lumen of a blood vessel comprising a flexible elongate tubular shaft having proximal and distal extremities, a length and a longitudinal axis, said shaft being comprised of a torque tube extending through at least a
A catheter having a high torque capability adapted to be inserted into and through a lumen of a blood vessel comprising a flexible elongate tubular shaft having proximal and distal extremities, a length and a longitudinal axis, said shaft being comprised of a torque tube extending through at least a portion of the length of the shaft, said torque tube having a cylindrical wall with at least one flexible portion therein, said flexible portion being characterized in that at least one slot is provided in said cylindrical wall subtending an angle of less than 360°, a flexible sleeve enclosing said torque tube and serving to cover said flexible portion and permitting said torque tube to bend in the vicinity of said slot, a handle adapted to be grasped by the human hand and secured to the proximal extremity of said tubular shaft for causing rotation of the tubular shaft, first and second pull strings secured between the handle and the distal extremity of the shaft, means carried by the handle for pulling on said pull strings for causing bending of the distal extremity of the flexible elongate tubular member, said torque tube being provided with a tip section and a tractable section proximal of the tip section and means for connecting one of said pull strings to said tip section and the other of said pull strings to said tractable section whereby the tip section can be bent by pulling on one of said pull strings and the tractable section can be bent by pulling on the other of said pull strings.
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