EP0351687A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Vascular catheter
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1989-07-10
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Granted: —
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Expires: 2009-07-10
Abstract
Abstract The invention is directed to a very low-profile dilatation catheter (10) having an inner tubular member (13) with an inner lumen (17) with a diameter of not more than 0.003 inch (0.076 mm) greater than the diameter of a guidewire (16) disposed therein. Preferably, the inner diameter of the tubular member is less than 0.015 inch (0.381 mm). the inner member may be formed of a thin-walled tubing such as polyimide tubing having a wall thickness less than 0.003 inch (0.076 mm). Polyimide tubing is also preferably employed as the tubular member in low-profile steerable dilatation catheters wherein the guide elements thereof are fixed within the catheter.
Inventors
- 👤 Timothy R. Machold
- 👤 Craig E. Mar
- 👤 Richard L. Mueller, Jr.
- 👤 John P. Shanahan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 03:41
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/01; A61M25/09; A61M25/09016; A61M25/09033; A61B; A61B17/00; A61B17/22; A61B2017/22001; A61M2025/09175; A61M2025/1043; A61M2025/1093
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
126 words
A dilatation catheter for use with a thin guidewire, comprising: a) an outer tubular member having an inflatable balloon on the distal portion thereof; b) an inner tubular member disposed within the outer tubular member and defining an annular passageway therebetween which connects in fluid communication with the interior of the inflatable balloon and a source of inflation fluid; c) an inner lumen extending longitudinally through the inner tubular member having a diameter which is not more than about 0.003 inch (0.076 mm) greater than the outer diameter of a guidewire slidably disposed therein; and d) means to seal the distal end of the balloon about the distal end of the inner tubular member to prevent loss of inflation fluid from the interior of the balloon.
Claim 2
Dependent Claim
126 words
A dilatation catheter for use with a thin guidewire, comprising: a) an outer tubular member having an inflatable balloon on the distal portion thereof; b) an inner tubular member disposed within the outer tubular member and defining an annular passageway therebetween which connects in fluid communication with the interior of the inflatable balloon and a source of inflation fluid; c) an inner lumen extending longitudinally through the inner tubular member having a diameter which is not more than about 0.003 inch (0.076 mm) greater than the outer diameter of a guidewire slidably disposed therein; and d) means to seal the distal end of the balloon about the distal end of the inner tubular member to prevent loss of inflation fluid from the interior of the balloon.
Claim 3
Dependent Claim
15 words
The dilatation catheter of claim 1 wherein the inner tubular member is formed of polyimide.
Claim 4
Dependent Claim
106 words
A dilatation catheter comprising: a) an outer tubular member having an inflatable balloon on the distal portion thereof; b) an inner tubular member formed of polyimide having an inner lumen extending therethrough which is adapted to receive a guidewire therein, said inner member being disposed within the outer member and defining an annular passageway therebetween which is in fluid communication with the interior of the inflatable balloon and a source of inflation fluid; and c) a seal between the distal end of the balloon and the distal end of the inner tubular member to prevent the loss of inflation fluid from the interior of the balloon.
Claim 5
Dependent Claim
106 words
A dilatation catheter comprising: a) an outer tubular member having an inflatable balloon on the distal portion thereof; b) an inner tubular member formed of polyimide having an inner lumen extending therethrough which is adapted to receive a guidewire therein, said inner member being disposed within the outer member and defining an annular passageway therebetween which is in fluid communication with the interior of the inflatable balloon and a source of inflation fluid; and c) a seal between the distal end of the balloon and the distal end of the inner tubular member to prevent the loss of inflation fluid from the interior of the balloon.
Claim 6
Dependent Claim
36 words
The dilatation catheter of claim 3 wherein the diameter of the inner lumen of the inner tubular member is not more than about 0.003 inch (0.076 mm) greater than the diameter of a guidewire disposed therein.
Claim 7
Dependent Claim
29 words
The dilatation catheter of any one of the preceding claims wherein the diameter of the inner lumen within the inner tubular member is less than 0.015 inch (0.38 mm).
Claim 8
Dependent Claim
27 words
The dilatation catheter of any one of the preceding claims wherein the inner tubular member has a wall thickness of less than about 0.003 inch (0.076 mm).
Claim 9
Dependent Claim
17 words
The dilatation catheter of claim 6 wherein the wall thickness is less than 0.0015 inch (0.038 mm).
Claim 10
Dependent Claim
25 words
The dilatation catheter of any one of the preceding claims wherein the inner lumen of the inner tubular member is provided with a lubricous surface.
Claim 11
Dependent Claim
14 words
The dilatation catheter of claim 8 wherein the lubricous surface is formed with polytetrafluoroethylene.
Claim 12
Dependent Claim
38 words
The dilatation catheter of any one of the preceding claims wherein a thin guidewire is disposed within the inner lumen having a diameter of less than 0.012 inch (0.305 mm) over a substantial portion of the length thereof.
Claim 13
Dependent Claim
32 words
The dilatation catheter of claim 10 wherein the guidewire has a diameter from about 0.006 to about 0.01 inch (0.152 to about 0.254 mm) over a substantial portion of the length thereof.
Claim 14
Dependent Claim
28 words
The dilatation catheter of claim 9 wherein the guidewire has a coating of polytetrafluoroethylene of about 0.0005 to about 0.001 inch (0.013 to about 0.025 mm) in thickness.
Claim 15
Dependent Claim
116 words
A steerable low-profile dilatation catheter, comprising: a) an elongated thin-walled tubular member formed of polyimide having an inner lumen extending therethrough; b) an inflatable balloon element, the proximal end of which is secured to the distal end of the thin-walled tubular member with the balloon interior being in fluid communication with the inner lumen of the tubular member to provide inflation fluid thereto; c) a guide element extending through the interior of the balloon; d) means to seal the distal end of the balloon about the guide element to prevent the loss of inflating fluid from the balloon interior; and e) a helical coil disposed about the distal portion of the guide element and secured thereto.
Claim 16
Dependent Claim
116 words
A steerable low-profile dilatation catheter, comprising: a) an elongated thin-walled tubular member formed of polyimide having an inner lumen extending therethrough; b) an inflatable balloon element, the proximal end of which is secured to the distal end of the thin-walled tubular member with the balloon interior being in fluid communication with the inner lumen of the tubular member to provide inflation fluid thereto; c) a guide element extending through the interior of the balloon; d) means to seal the distal end of the balloon about the guide element to prevent the loss of inflating fluid from the balloon interior; and e) a helical coil disposed about the distal portion of the guide element and secured thereto.
Claim 17
Dependent Claim
24 words
The steerable low-profile dilatation catheter of claim 13 wherein the polyimide tubular member has a wall thickness less than about 0.003 inch (0.076 mm).
Claim 18
Dependent Claim
20 words
The steerable low-profile dilatation catheter of claim 14 wherein the wall thickness is less than about 0.0015 inch (0.038 mm).
Claim 19
Dependent Claim
24 words
The steerable low-profile dilatation catheter of claim 14 wherein the inner diameter of the polyimide tubular member is less than 0.015 inch (0.38 mm).
Claim 20
Dependent Claim
23 words
The steerable low-profile dilatation catheter of any one of claims 13-16 wherein the guide element extends through the length of the tubular member.
Claim 21
Dependent Claim
25 words
The steerable low-profile dilatation catheter of any one of claims 13-17 wherein the guide element is secured to the distal end of the tubular member.
Claim 22
Dependent Claim
48 words
A vascular catheter comprising an elongated tubular member, said tubular member having an inner lumen extending therethrough adapted to receive a guidewire and having a diameter less than 0.012 inch (0.035 mm) which is not more than 0.003 inch (0.076 mm) greater than the diameter of the guidewire.
Claim 23
Dependent Claim
48 words
A vascular catheter comprising an elongated tubular member, said tubular member having an inner lumen extending therethrough adapted to receive a guidewire and having a diameter less than 0.012 inch (0.035 mm) which is not more than 0.003 inch (0.076 mm) greater than the diameter of the guidewire.
Claim 24
Dependent Claim
15 words
The vascular catheter of claim 19 wherein the elongated tubular member is formed of polyimide.
Claim 25
Dependent Claim
23 words
The vascular catheter of claim 20 wherein the elongated tubular member has a wall thickness of less than about 0.003 inch (0.076 mm).
Claim 26
Dependent Claim
22 words
The vascular catheter of claim 21 wherein the tubular member has a wall thickness of less than about 0.0015 inch (0.038 mm).
References Cited (Backward Citations)
No citation records indexed.
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