Steerable catheter
First Claim
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1. A steerable dilatation catheter means comprising:
- a. a flexible catheter comprising a spring coil body defining a lumen, said spring coil body having proximal and distal ends, the distal end of said spring coil body being closed, and said spring coil body having a flexible body skin thereon;
b. dilatation balloon means positioned adjacent to the distal end of said spring coil body, said spring coil being less tightly wound for a predetermined length at a point substantially adjacent to the distal end of said spring coil body and within the dilatation balloon means, the flexible body skin proximal to the dilatation balloon means being tight against said spring coil body, and the dilatation balloon means being inflated by fluid entering through the less tightly wound coils in said predetermined length;
c. a deflection wire within the lumen having proximal and distal ends and being substantially co-extensive with said spring coil body, the distal end of said deflection wire being attached to the distal end of said spring coil body; and
,d. control means attached to the proximal end of said catheter, the proximal end of said deflection wire extending to the control means, the control means having engaging means which fixedly engages the proximal end of said deflection wire to cause said deflection wire to be displaced distally or proximally, said displacement causing the distal end of said catheter to bend out of or toward the line of its longitudinal axis, and the control means having rotation means to cause said deflection wire and said catheter to rotate together to cause the distal end of said catheter to rotate about its longitudinal axis.
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Abstract
This invention relates to steerable catheters. More particularly, this invention relates to steerable catheters comprising a flexible catheter comprising a spring coil body defining a lumen, the spring coil body having a flexible covering thereon; a deflection wire, the distal end of the deflection wire being attached to the distal end of the spring coil body; and control means attached to the proximal end of the catheter, the proximal end of the deflection wire extending through the control means and the control means having a torque means which fixedly engages said deflection wire.
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Citations
40 Claims
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1. A steerable dilatation catheter means comprising:
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a. a flexible catheter comprising a spring coil body defining a lumen, said spring coil body having proximal and distal ends, the distal end of said spring coil body being closed, and said spring coil body having a flexible body skin thereon; b. dilatation balloon means positioned adjacent to the distal end of said spring coil body, said spring coil being less tightly wound for a predetermined length at a point substantially adjacent to the distal end of said spring coil body and within the dilatation balloon means, the flexible body skin proximal to the dilatation balloon means being tight against said spring coil body, and the dilatation balloon means being inflated by fluid entering through the less tightly wound coils in said predetermined length; c. a deflection wire within the lumen having proximal and distal ends and being substantially co-extensive with said spring coil body, the distal end of said deflection wire being attached to the distal end of said spring coil body; and
,d. control means attached to the proximal end of said catheter, the proximal end of said deflection wire extending to the control means, the control means having engaging means which fixedly engages the proximal end of said deflection wire to cause said deflection wire to be displaced distally or proximally, said displacement causing the distal end of said catheter to bend out of or toward the line of its longitudinal axis, and the control means having rotation means to cause said deflection wire and said catheter to rotate together to cause the distal end of said catheter to rotate about its longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A steerable dilatation catheter means comprising:
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a. a flexible catheter comprising a spring coil body defining a lumen, said spring coil body having proximal and distal ends, the distal end of said spring coil body being closed, and said spring coil body having a flexible body skin tightly fitting thereon; b. dilatation balloon means positioned adjacent to the distal end of said spring coil body, said spring coil being less tightly wound for a predetermined length at a point substantially adjacent to the distal end of said spring coil body and within the dilatation balloon means, the flexible body skin proximal to the dilatation balloon means being tight against said spring coil body, and the dilatation balloon means being inflated by fluid entering through the less tightly wound coils in said predetermined length; c. an anchor wire within the lumen having proximal and distal ends, the proximal and distal ends of the anchor wire being affixed to the proximal and distal ends, respectively, of the spring coil body; and
,d. control means attached to the proximal end of said catheter, said control means having rotation means to cause said catheter and anchor wire to rotate together to cause the distal end of said catheter to rotate about its longitudinal axis. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A steerable dilatation catheter means comprising:
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a. a flexible catheter comprising a spring coil body defining a lumen, said spring coil body having proximal and distal ends, the distal end of said spring coil body being closed, and said spring coil body having a flexible body skin tightly fitting thereon and extending from said proximal end to said distal end; b. dilatation balloon means positioned adjacent to said distal end of said spring coil body and concentrically around said spring coil body, said dilatation balloon means having proximal and distal portions sealingly attached to said flexible coating, and said flexible coating having an opening within said dilatation balloon means to permit inflation thereof; c. a deflection wire within the lumen having proximal and distal ends and being substantially co-extensive with said spring coil body, the distal end of said deflection wire being attached to the distal end of said spring coil body; and
,d. control means attached to the proximal end of said catheter, the proximal end of said deflection wire extending to the control means, the control means having engaging means which fixedly engages the proximal end of said deflection wire to cause said deflection wire to be displaced distally or proximally, said displacement causing the distal end of said catheter to bend out of or toward the line of its longitudinal axis, and the control means having rotation means to cause said deflection wire and said catheter to rotate together to cause the distal end of said catheter to rotate about its longitudinal axis. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. A steerable dilatation catheter means comprising:
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a flexible catheter comprising a spring coil body defining a lumen, said spring coil body having proximal and distal ends, a flexible tip having proximal and distal ends, the proximal end of said flexible tip being positioned a short distance distally from the distal end of said spring coil body to form a discontinuity, and a flexible covering, said flexible covering extending from the proximal end of said spring coil body along the length of said spring coil body across said discontinuity to the proximal end of said flexible tip, dilatation balloon means positioned concentrically around said discontinuity, a deflection wire having proximal and distal ends, said deflection wire extending substantially co-extensively with said spring coil body, the distal end of said deflection wire being attached to the proximal end of said flexible tip, an anchor wire having proximal and distal ends, the proximal end of the anchor wire being affixed to the proximal end of the spring coil body and the distal end of the anchor wire being attached to said flexible tip; and control means attached to the proximal end of said spring coil body and having engaging means which fixedly engages the proximal end of said deflection wire to cause said deflection wire to be displaced distally or proximally, said displacement causing the distal end of said catheter to bend out of or toward the line of its longitudinal axis, and the control means having rotation means to cause said deflection wire and said catheter to rotate together to cause the distal end of said catheter to rotate about its longitudinal axis. - View Dependent Claims (29, 30)
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31. A steerable catheter set comprising:
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a. steerable catheter means comprising a spring coil body defining a lumen, said spring coil body having proximal and distal ends, the distal end of said spring coil body being open, a deflection wire having proximal and distal ends and being substantially co-extensive with said spring coil body, the distal end of said deflection wire being attached to the distal end of said spring coil body, and control means attached to the proximal end of said catheter, the proximal end of said deflection wire extending to the control means, the control means having engaging means which fixedly engages the proximal end of said deflection wire to cause said deflection wire to be displaced distally or proximally, said displacement causing the distal end of said catheter to bend out of or toward the line of its longitudinal axis, and the control means having rotation means to cause said deflection wire and said catheter to rotate together to cause the distal end of said catheter to rotate about its longitudinal axis; and
,b. fiber optic means extending with the lumen of said steerable catheter and being passable therein. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification