EP0356748A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Steerable dilatation catheter
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1989-08-03
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Granted: —
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Expires: 2009-08-03
Abstract
Abstract A low-profile steerable dilatation catheter (10) for angioplasty procedures which has an inflated balloon (16) on the distal end (15) with little or no tendency to wrap on itself when the catheter is advanced through a patient's vascular system. The catheter comprises an elongated tubular member (11) which is longitudinally relatively flexible but diametrically relatively rigid, a guide extension (12) secured to the distal end (15) of the elongated tubular member, and an inflatable balloon (16) secured at the proximal end (18) thereof to the distal end of the elongated tubular member and at the distal end (20) directly or indirectly to the guide member or the tubular member and an elongated flexible member such as a helical coil (21) secured to the guide extension distally of the balloon. The elongated tubular member is preferably a hypotube of stainless steel or nitinol.
Inventors
- 👤 Wilfred J. Samson
- 👤 William S. Tremulis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/01; A61M25/0105; A61M25/0133; A61M25/0138; A61M25/09; A61M25/1011; A61B; A61B17/00; A61B17/22; A61B2017/22001; A61M25/0043; A61M2025/0063; A61M2025/09008; A61M2025/09175; A61M2025/1015; A61M2025/1043; A61M2025/1079; A61M2025/1093
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
185 words
A steerable dilatation catheter comprising: a) an elongated, tubular member formed of high-strength material having proximal and distal extremities and an inner lumen extending along the length thereof in fluid communication with at least one discharge port for inflation fluid provided in the distal extremity thereof; b) a guide element secured to the distal extremity of the elongated tubular member; c) an inflatable balloon with the proximal end thereof secured to the distal extremity of the elongated tubular member proximally of at least one discharge port therein to facilitate the passage of inflation fluid from the inner lumen of the tubular member into the interior of the inflatable balloon with the distal end of the balloon sealingly secured about the guide element or the distal end of the tubular member extending therethrough to prevent loss of inflation fluid and to prevent relative rotational movement between the proximal and distal ends of the balloon; d) an elongated flexible member disposed about the guide element and extending distally of the balloon; and e) torque means to axially rotate the elongated tube and the guide element secured thereto.
Claim 2
Dependent Claim
185 words
A steerable dilatation catheter comprising: a) an elongated, tubular member formed of high-strength material having proximal and distal extremities and an inner lumen extending along the length thereof in fluid communication with at least one discharge port for inflation fluid provided in the distal extremity thereof; b) a guide element secured to the distal extremity of the elongated tubular member; c) an inflatable balloon with the proximal end thereof secured to the distal extremity of the elongated tubular member proximally of at least one discharge port therein to facilitate the passage of inflation fluid from the inner lumen of the tubular member into the interior of the inflatable balloon with the distal end of the balloon sealingly secured about the guide element or the distal end of the tubular member extending therethrough to prevent loss of inflation fluid and to prevent relative rotational movement between the proximal and distal ends of the balloon; d) an elongated flexible member disposed about the guide element and extending distally of the balloon; and e) torque means to axially rotate the elongated tube and the guide element secured thereto.
Claim 3
Dependent Claim
22 words
The steerable dilatation catheter of claim 1 wherein the flexible member is a helical coil or an elongated body of flexible plastic.
Claim 4
Dependent Claim
24 words
The steerable dilatation catheter of claims 1 or 2 wherein a smooth rounded plug is formed in the distal tip of the flexible member.
Claim 5
Dependent Claim
21 words
The steerable dilatation catheter of claim 3 wherein the distal tip of the guide element is secured to the rounded plug.
Claim 6
Dependent Claim
21 words
The steerable dilatation catheter of claim 3 wherein the distal tip of the guide element terminates short of the rounded plug.
Claim 7
Dependent Claim
32 words
The steerable dilatation catheter of claim 5 wherein the distal tip of the guide element is secured to the flexible member at an intermediate location between the proximal and distal ends thereof.
Claim 8
Dependent Claim
36 words
The steerable dilatation catheter of claim 6 wherein a shaping ribbon is secured at the proximal end thereof to the flexible member at the intermediate location and at the distal end thereof to the rounded plug.
Claim 9
Dependent Claim
29 words
The steerable dilatation catheter of claim 7 wherein the shaping ribbon is formed of a metal selected from the group consisting of tungsten and alloys thereof and stainless steel.
Claim 10
Dependent Claim
29 words
The steerable dilatation catheter of any one of the preceding claims wherein the elongated tubular member is formed of metal and is longitudinally relatively flexible but diametrically relatively rigid.
Claim 11
Dependent Claim
21 words
The steerable dilatation catheter of claim 9 wherein the metal is selected from the group consisting of stainless steel and nitinol.
Claim 12
Dependent Claim
69 words
The steerable dilatation catheter of any one of the preceding claims wherein a flexible plastic tube is disposed about the elongated tube formed of high-strength material and is sealingly secured about the periphery thereof at a location proximal to the balloon and wherein one or more inlet ports are provided in the elongated tube formed of high-strength material proximally of the location where the flexible plastic tube is secured.
Claim 13
Dependent Claim
19 words
The steerable dilatation catheter of any one of the preceding claims wherein the profile is less than 0.508 mm.
Claim 14
Dependent Claim
31 words
The steerable dilatation catheter of any one of the preceding claims wherein the balloon is formed from a plastic material selected from the group consisting of polyethylene, polyvinylchloride, and polyethylene terephthalate.
Claim 15
Dependent Claim
24 words
The steerable dilatation catheter of any one of the claims wherein at least the distal portion of the coil is formed of radiopaque metal.
Claim 16
Dependent Claim
25 words
The steerable dilatation catheter of any one of the preceding claims wherein the torque means is secured to the proximal end of the elongated tube.
Claim 17
Dependent Claim
15 words
The steerable dilatation catheter of claim 15 wherein the torque means is a removable hub.
Claim 18
Dependent Claim
29 words
The steerable dilatation catheter of any one of the preceding claims including means to vent air from the interior of the balloon during the inflation thereof with inflating liquid.
Claim 19
Dependent Claim
27 words
The steerable dilatation catheter of claim 17 wherein the venting means is a porous body disposed between the distal end of the balloon and the guide element.
Claim 20
Dependent Claim
15 words
The steerable dilatation catheter of claim 18 wherein the porous body is formed of polypropylene.
Claim 21
Dependent Claim
39 words
The steerable dilatation catheter of any one of the preceding claims wherein the tubular member extends through the interior of the balloon and the distal end of the balloon is sealed about the distal end of the tubular member.
Claim 22
Dependent Claim
25 words
The steerable dilatation catheter of claim 20 wherein the portion of the tubular member extending through the balloon is provided with a plurality of slots.
Claim 23
Dependent Claim
20 words
The steerable dilatation catheter of claim 21 wherein the slots are axially offset from one another by at least 45°.
Claim 24
Dependent Claim
21 words
The steerable dilatation catheter of claim 21 wherein the slots are cut through at least half the diameter of the tube.
Claim 25
Dependent Claim
33 words
The steerable dilatation catheter of claim 21 wherein the width of the slots range from about 0.01 to 0.03 inch and the distance between the slots ranges from about 0.02 to 0.08 inch.
Claim 26
Dependent Claim
166 words
A steerable dilatation catheter having an inflatable balloon on the distal portion thereof, comprising: a) an elongated torquable member extending along the length of the catheter including, an elongated, tubular element formed of high-strength material having proximal and distal extremities and an inner lumen extending along the length thereof in fluid communication with at least one inflation port for inflation fluid provided in the distal extremity thereof, and a guide element secured to the distal extremity of the elongted tubular member; b) the inflatable balloon secured at both the proximal end and distal ends thereof to the elongated torquable member to prevent the relative rotational movement therebetween with means to connect in fluid communication at least one inflation port in the tubular member with the interior of the inflatable balloon; c) an elongated flexible member disposed about a portion of the guide element which extends distally of the balloon; and d) means on the proximal portion of the torquable member to axially rotate the torquable member.
Claim 27
Dependent Claim
166 words
A steerable dilatation catheter having an inflatable balloon on the distal portion thereof, comprising: a) an elongated torquable member extending along the length of the catheter including, an elongated, tubular element formed of high-strength material having proximal and distal extremities and an inner lumen extending along the length thereof in fluid communication with at least one inflation port for inflation fluid provided in the distal extremity thereof, and a guide element secured to the distal extremity of the elongted tubular member; b) the inflatable balloon secured at both the proximal end and distal ends thereof to the elongated torquable member to prevent the relative rotational movement therebetween with means to connect in fluid communication at least one inflation port in the tubular member with the interior of the inflatable balloon; c) an elongated flexible member disposed about a portion of the guide element which extends distally of the balloon; and d) means on the proximal portion of the torquable member to axially rotate the torquable member.
References Cited (Backward Citations)
No citation records indexed.
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