US5830181A
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US
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Perfusion catheter with high flow distal tip
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1997-02-07
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Granted: 1998-11-03
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Expires: 2017-02-07
Abstract
Abstract A perfusion catheter of the invention has an improved short, distal perfusion portion with a high flow rate. The distal perfusion portion has at least two rows of circumferentially disposed perfusion ports and is preferably tapered in the distal direction from larger cross-sectional dimensions to smaller cross sectional dimensions, with the number of perfusion ports in the most distal row of circumferentially disposed perfusion ports being less than the number of a perfusion ports in a row of perfusion ports proximal to the most distal row. The distal perfusion portion is most conveniently formed from a distal skirt of a dilatation balloon on the distal section of the catheter.
Inventors
- 👤 Troy L. Thornton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:19
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/0067; A61M25/0068; A61M2025/0073; A61M2025/1043; A61M2025/1079; A61M2025/1095; A61M25/007; A61M25/1006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
115 words
A perfusion dilatation catheter, comprising: a) an elongated shaft having a proximal end, a distal end, a guidewire lumen, an inflation lumen, a port in the distal end in fluid communication with the guidewire lumen; b) a balloon on a distal section of the elongated shaft having an interior in fluid communication with the inflation lumen; c) a proximal shaft portion which has at least one perfusion port located proximal to the balloon; and d) a distal shaft portion located distal to the balloon, having a plurality of perfusion ports disposed circumferentially in at least two rows over an axial length less than about 3 mm in fluid communication with the guidewire lumen extending therein.
Claim 2
Dependent Claim
115 words
A perfusion dilatation catheter, comprising: a) an elongated shaft having a proximal end, a distal end, a guidewire lumen, an inflation lumen, a port in the distal end in fluid communication with the guidewire lumen; b) a balloon on a distal section of the elongated shaft having an interior in fluid communication with the inflation lumen; c) a proximal shaft portion which has at least one perfusion port located proximal to the balloon; and d) a distal shaft portion located distal to the balloon, having a plurality of perfusion ports disposed circumferentially in at least two rows over an axial length less than about 3 mm in fluid communication with the guidewire lumen extending therein.
Claim 3
Dependent Claim
25 words
The dilatation catheter of claim 1 wherein the distal shaft portion has a plurality of perfusion ports over a length less than about 2 mm.
Claim 4
Dependent Claim
25 words
The dilatation catheter of claim 1 wherein the perfusion ports in the distal shaft portion are about 0.01 to about 0.02 mm in maximum dimension.
Claim 5
Dependent Claim
29 words
The dilatation catheter of claim 1 wherein the rows of circumferentially disposed perfusion ports are longitudinally spaced from each other a distance of about 0.2 to about 0.4 mm.
Claim 6
Dependent Claim
19 words
The dilatation catheter of claim 4 wherein a first row of perfusion ports has at least three perfusion ports.
Claim 7
Dependent Claim
30 words
The dilatation catheter of claim 5 wherein a second row of perfusion ports has at least four perfusion ports and is located distal to the first row of perfusion ports.
Claim 8
Dependent Claim
34 words
The dilatation catheter of claim 1 wherein said length extends to the distal end of the shaft and is tapered distally from larger outer dimensions to smaller outer dimensions over substantially the entire length.
Claim 9
Dependent Claim
120 words
An intravascular perfusion catheter, comprising: a) an elongated shaft having a proximal end, a distal end, a guidewire lumen, a port in the distal end in fluid communication with the guidewire lumen, and i) a distal perfusion portion of the elongated shaft which extends to a distal extremity of the catheter, having a length less than 3 mm, and having a plurality of perfusion ports disposed circumferentially in at least two rows in fluid communication with the guidewire lumen over the length less than 3 mm, and ii) a proximal perfusion portion of the elongated shaft which has at least one perfusion port in fluid communication with the guidewire lumen and which is located proximal to the distal perfusion portion.
Claim 10
Dependent Claim
120 words
An intravascular perfusion catheter, comprising: a) an elongated shaft having a proximal end, a distal end, a guidewire lumen, a port in the distal end in fluid communication with the guidewire lumen, and i) a distal perfusion portion of the elongated shaft which extends to a distal extremity of the catheter, having a length less than 3 mm, and having a plurality of perfusion ports disposed circumferentially in at least two rows in fluid communication with the guidewire lumen over the length less than 3 mm, and ii) a proximal perfusion portion of the elongated shaft which has at least one perfusion port in fluid communication with the guidewire lumen and which is located proximal to the distal perfusion portion.
Claim 11
Dependent Claim
21 words
The catheter of claim 8 wherein the distal perfusion portion of the elongated shaft is tapered over substantially the entire length.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-02 | 2002-05-04 | 2002-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-02 | 2006-05-04 | 2006-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-02 | 2010-05-04 | 2010-11-03 | $7700.00 | Window Closed / Lapsed |