Patent US5087247A successfully refreshed from Google Patents.
US5087247A
Expired / Lapsed
US
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Balloon perfusion catheter
Assignee: Cardiovascular Designs Inc
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Filing: 1990-08-28
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Granted: 1992-02-11
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Expires: 2010-08-28
Abstract
Abstract Balloon perfusion catheter having a flexible elongated shaft from which a perfusion shaft and an inflation shaft outwardly extend. An angioplasty balloon is circumferentially mounted around the perfusion shaft. The inflation shaft distal end is located at the balloon proximal end. Openings in the perfusion shaft both proximal and distal to the balloon permit blood flow through artery during balloon inflation.
Inventors
- 👤 Joseph B. Horn
- 👤 Allen J. Tower
- 👤 James F. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:05
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/01; A61M2025/0177; A61M2025/1043; A61M2025/1097
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
91 words
A dilation catheter, comprising: (a) a flexible elongated shaft having a first lumen longitudinally extending therewithin and a second lumen longitudinally extending therewithin; (b) a perfusion shaft outwardly extending from and in communication with the first lumen; (c) a balloon circumscribing the perfusion shaft, the perfusion shaft having a plurality of openings proximal and distal to the balloon; and (d) an inflation shaft outwardly extending from and in communication with the second lumen, the perfusion shaft for at least a portion of its length being physically separate from the inflation shaft.
Claim 2
Dependent Claim
91 words
A dilation catheter, comprising: (a) a flexible elongated shaft having a first lumen longitudinally extending therewithin and a second lumen longitudinally extending therewithin; (b) a perfusion shaft outwardly extending from and in communication with the first lumen; (c) a balloon circumscribing the perfusion shaft, the perfusion shaft having a plurality of openings proximal and distal to the balloon; and (d) an inflation shaft outwardly extending from and in communication with the second lumen, the perfusion shaft for at least a portion of its length being physically separate from the inflation shaft.
Claim 3
Dependent Claim
30 words
A dilation catheter as recited in claim 1, wherein the plurality of openings are offset to at least partially circumscribe the perfusion shaft both proximal and distal to the balloon.
Claim 4
Dependent Claim
25 words
A dilation catheter as recited in claim 1, wherein the plurality of openings spirally circumscribe the perfusion catheter both proximal and distal to the balloon.
Claim 5
Dependent Claim
40 words
A dilation catheter as recited in claim 1, wherein the perfusion shaft extends from the flexible elongated shaft separate from and without attachment to the inflation shaft, and then attaches to the inflation shaft at the inflation shaft distal end.
Claim 6
Dependent Claim
41 words
A dilation catheter as recited in claim 1, wherein the perfusion shaft extends to the perfusion shaft distal end separate from and without attachment to the inflation shaft for at least about 10 percent of the length of the perfusion shaft.
Claim 7
Dependent Claim
23 words
A dilation catheter as recited in claim 1, wherein the first lumen and the perfusion shaft are adapted to receive a guide wire.
Claim 8
Dependent Claim
21 words
A dilation catheter as recited in claim 1, wherein the second lumen and the inflation shaft are adapted to receive fluid.
Claim 9
Dependent Claim
54 words
A dilation catheter as recited in claim 1, wherein a distal end marker is affixed on the perfusion shaft near the perfusion shaft distal end, a balloon marker is affixed on the perfusion shaft beneath the balloon, and a proximal end marker is affixed on the perfusion shaft near the perfusion shaft proximal end.
Claim 10
Dependent Claim
32 words
A dilation catheter as recited in claim 1, wherein there are between about 4 to 40 openings proximal to the balloon and between about 2 to 20 openings distal to the balloon.
Claim 11
Dependent Claim
32 words
A dilation catheter as recited in claim 1, wherein there are between about 10 and 40 openings proximal to the balloon and between about 4 and 10 openings distal to the balloon.
Claim 12
Dependent Claim
32 words
A dilation catheter as recited in claim 1, wherein there are between about 20 to 30 openings proximal to the balloon and between about 6 to 8 openings distal to the balloon.
Claim 13
Dependent Claim
17 words
A dilation catheter as recited in claim 1, wherein the plurality of openings are round in shape.
Claim 14
Dependent Claim
20 words
A dilation catheter as recited in claim 1, wherein each opening is between about 0.010 and 0.040 inches in diameter.
Claim 15
Dependent Claim
20 words
A dilation catheter as recited in claim 1, wherein each opening is between about 0.014 nd 0.024 inches in diameter.
Claim 16
Dependent Claim
17 words
A dilation catheter as recited in claim 1, wherein each opening is about 0.022 inches in diameter.
Claim 17
Dependent Claim
27 words
A dilation catheter as recited in claim 1, wherein the inflation shaft communicates with the balloon at the inflation shaft distal end and the balloon proximal end.
Claim 18
Dependent Claim
24 words
A dilation catheter as recited in claim 1, wherein the plurality of openings circumscribe the perfusion shaft both proximal and distal to the balloon.
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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) | 1995-02-10 | 1995-08-12 | 1996-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-10 | 1999-08-12 | 2000-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-10 | 2003-08-12 | 2004-02-11 | $7700.00 | Window Closed / Lapsed |