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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0148598 (1993-11-08) |
| 발명자 / 주소 |
|
| 인용정보 | 피인용 횟수 : 668 인용 특허 : 0 |
A vascular catheter with a distal working tip is provided with precise shape control. The tip section optionally includes a plurality of weakened segments of preferred deflection spaced from the distal end. Reciprocally operable control wires are attached distal each deflection segment and extend to
A vascular catheter with a distal working tip is provided with precise shape control. The tip section optionally includes a plurality of weakened segments of preferred deflection spaced from the distal end. Reciprocally operable control wires are attached distal each deflection segment and extend to a proximal control handle where they are attached to manual controls for adjusting longitudinal tension to the distal section of the catheter from just beyond the deflection segments in a manner that encourages bending or collapse of the deflection segments in the direction of the weakened or cutout areas. An additional reciprocating adjustable deflection shape control element, preferably a rod or tubular member which itself optionally may have areas of preferred deflection slidably reciprocates slidably within the main internal lumen of the working catheter section, and may be axially adjusted in relation to the working catheter segment to precisely modify the deflection characteristics of the catheter section sought to be controlled as produced by the control wires.
A deflection system for precisely controlling the shape of a distal catheter section, including a flexible distal working catheter area, of a tubular vascular catheter comprising: (a) a distal catheter section having an outer wall, a distal end, and a proximal end and including a distal working tip
A deflection system for precisely controlling the shape of a distal catheter section, including a flexible distal working catheter area, of a tubular vascular catheter comprising: (a) a distal catheter section having an outer wall, a distal end, and a proximal end and including a distal working tip area, the shape of which is sought to be controlled; (b) a plurality of relatively weaker or more flexible wall areas aligned in radially diverse directions serially spaced for producing greater flexibility in a preferred direction in the outer wall of the distal catheter section proximally spaced from the distal end of the distal section, each weaker wall area producing a tendency for the catheter to bend preferentially in the direction of and in the vicinity of the weaker wall segment; and (c) flexure control means including reciprocally operable means for applying an adjustable tension or pulling force to the distal catheter section from distal of the weaker wall area in a manner that produces curvature of the catheter at the one or more weaker wall areas in the desired direction of and in the vicinity of the weaker wall areas.
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