US5415634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter having helical inflation lumen
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1992-04-24
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Granted: 1995-05-16
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Expires: 2012-04-24
Abstract
Abstract A vascular catheter includes a catheter body, an inflatable balloon disposed at the distal end of the catheter body, and an inflation conduit extending from the proximal end of the catheter body to the inflatable balloon. The inflation conduit is disposed on the exterior of the catheter body, minimizing the total cross-sectional area but imparting a non-circular periphery. Catheter whip resulting from the non-circular periphery is reduced by arranging the inflation conduit in a helical pattern over at least a distal portion of the catheter body.
Inventors
- 👤 Brian Glynn
- 👤 John B. Simpson
- 👤 Michael Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:09
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320783; A61B17/22; A61B2017/22051; A61B2017/22065; A61B2017/22071; A61M2025/1043; A61M2025/1061; A61M2025/1086; A61M25/1002
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
67 words
A vascular catheter comprising: a torsionally reinforced flexible tube having proximal and distal ends and a substantially circular cross-sectional profile; an inflatable balloon located at the distal end of the flexible tube; and a substantially non-expandable inflation conduit extending from the proximal end to the inflatable balloon, wherein the inflation conduit is arranged helically about at least a distal portion of the exterior of the flexible tube.
Claim 2
Dependent Claim
67 words
A vascular catheter comprising: a torsionally reinforced flexible tube having proximal and distal ends and a substantially circular cross-sectional profile; an inflatable balloon located at the distal end of the flexible tube; and a substantially non-expandable inflation conduit extending from the proximal end to the inflatable balloon, wherein the inflation conduit is arranged helically about at least a distal portion of the exterior of the flexible tube.
Claim 3
Dependent Claim
24 words
A vascular catheter as in claim 1, wherein the inflation conduit includes a separate tube wrapped helically about the exterior of the flexible tube.
Claim 4
Dependent Claim
28 words
A vascular catheter as in claim 2, wherein the separate helically wrapped tube is secured by a sheath constricted about the flexible tube and the helically wrapped tube.
Claim 5
Dependent Claim
18 words
A vascular catheter as in claim 1, wherein the inflation conduit is formed integrally with the flexible tube.
Claim 6
Dependent Claim
44 words
A vascular catheter as in claim 4, wherein the inflation conduit has a crescent-shaped profile which subtends at least 45° of the periphery of the flexible tube and extends above the surface of the tube by no more than 0.3 of the tube diameter.
Claim 7
Dependent Claim
24 words
A vascular catheter as in claim 1, wherein the inflation conduit has a helical pitch in the range from about 2 to 20 cm/turn.
Claim 8
Dependent Claim
35 words
A vascular catheter as in claim 6, wherein the inflation conduit is arranged helically about only a distal portion of the flexible tube, said distal portion having a length from about 30 to 50 cm.
Claim 9
Dependent Claim
22 words
A vascular catheter as in claim 6, wherein the inflation conduit is arranged helically over the entire length of the flexible tube.
Claim 10
Dependent Claim
57 words
A vascular catheter as in claim 1, further comprising: a housing secured to the distal end of the flexible tube; and means for severing atheroma disposed on one side of the distal housing; wherein the inflatable balloon is disposed on a side of the housing generally opposite to the side on which the severing means is disposed.
Claim 11
Dependent Claim
134 words
A vascular catheter comprising: a flexible tube having proximal and distal ends, a substantially circular cross-sectional profile, and a central lumen extending axially between the proximal and distal ends; a braided metal torque member disposed within the central lumen of the flexible tube and fixed thereto whereby the distal end of the tube can be rotated by applying torque to the proximal end of the torque member; an inflation conduit formed over the flexible tube and disposed helically about at least a distal portion of the exterior of the flexible tube; and an inflatable balloon located at the distal end of the flexible tube and connected to receive inflation medium from the inflation tube, whereby the helical disposition of the inflation conduit lessens resistance when the catheter is being rotated in a vascular lumen.
Claim 12
Dependent Claim
134 words
A vascular catheter comprising: a flexible tube having proximal and distal ends, a substantially circular cross-sectional profile, and a central lumen extending axially between the proximal and distal ends; a braided metal torque member disposed within the central lumen of the flexible tube and fixed thereto whereby the distal end of the tube can be rotated by applying torque to the proximal end of the torque member; an inflation conduit formed over the flexible tube and disposed helically about at least a distal portion of the exterior of the flexible tube; and an inflatable balloon located at the distal end of the flexible tube and connected to receive inflation medium from the inflation tube, whereby the helical disposition of the inflation conduit lessens resistance when the catheter is being rotated in a vascular lumen.
Claim 13
Dependent Claim
34 words
A vascular catheter as in claim 10, wherein the inflation tube conduit is a separate tube which is secured to the flexible tube by a sheath constricted about the flexible tube and the tube.
Claim 14
Dependent Claim
44 words
A vascular catheter as in claim 10, wherein the inflation conduit has a crescent-shaped profile which subtends at least 45° of the periphery of the flexible tube and extends above the surface of the tube by no more than 0.3 of the tube diameter.
Claim 15
Dependent Claim
26 words
A vascular catheter as in claim 10, wherein the inflation conduit is wrapped at a helical pitch in the range from about 2 to 20 cm/turn.
Claim 16
Dependent Claim
35 words
A vascular catheter as in claim 13, wherein the inflation conduit is arranged helically about only a distal portion of the flexible tube, said distal portion having a length from about 30 to 50 cm.
Claim 17
Dependent Claim
20 words
A vascular catheter as in claim 13, wherein the inflation conduit extends over the entire length of the flexible tube.
Claim 18
Dependent Claim
57 words
A vascular catheter as in claim 10, further comprising: a housing secured to the distal end of the flexible tube, and means for severing atheroma disposed on one side of the distal housing, wherein the inflatable balloon is disposed on a side of the housing generally opposite to the side on which the severing means is disposed.
Claim 19
Dependent Claim
45 words
A vascular catheter as in claim 16, wherein the housing has an elongate aperture on said one side and means for severing includes a cutting blade disposed in the housing and attached to a drive cable disposed in the central lumen of the flexible tube.
Claim 20
Dependent Claim
21 words
A vascular catheter as in claim 16, wherein the inflatable balloon is formed as an expanded section of the inflation tube.
Claim 21
Dependent Claim
88 words
A vascular catheter comprising: a torsionally reinforced flexible tube having at least first and second lumens formed integrally therein and extending from a proximal end to a distal end thereof; and an inflatable balloon disposed at the distal end of the flexible tube, wherein the first lumen has a substantially circular profile and is disposed axially within the flexible tube and the second lumen is arranged helically about at least a distal portion of the first lumen and is connected at its distal end to the inflatable balloon.
Claim 22
Dependent Claim
88 words
A vascular catheter comprising: a torsionally reinforced flexible tube having at least first and second lumens formed integrally therein and extending from a proximal end to a distal end thereof; and an inflatable balloon disposed at the distal end of the flexible tube, wherein the first lumen has a substantially circular profile and is disposed axially within the flexible tube and the second lumen is arranged helically about at least a distal portion of the first lumen and is connected at its distal end to the inflatable balloon.
Claim 23
Dependent Claim
22 words
A vascular catheter as in claim 19, wherein the second lumen is expanded at its distal end to form the inflatable balloon.
Claim 24
Dependent Claim
41 words
A vascular catheter as in claim 19, wherein the first lumen has a diameter in the range from about 0.010 in. to 0.10 in and the second lumen has a diameter in the range from about 0.015 in. to 0.040 in.
Claim 25
Dependent Claim
45 words
A vascular catheter as in claim 19, wherein the second lumen has a crescent-shaped profile which subtends at least 45° of the periphery of the first lumen and extends above the surface of the first lumen by no more than 0.3 of the lumen diameter.
Claim 26
Dependent Claim
24 words
A vascular catheter as in claim 19, wherein the second lumen has a helical pitch in the range from about 2 to 20 cm/turn.
Claim 27
Dependent Claim
35 words
A vascular catheter as in claim 23, wherein the inflation conduit is arranged helically about only a distal portion of the flexible tube, said distal portion having a length from about 30 to 50 cm.
Claim 28
Dependent Claim
20 words
A vascular catheter as in claim 23, wherein the inflation conduit extends over the entire length of the flexible tube.
Claim 29
Dependent Claim
57 words
A vascular catheter as in claim 19, further comprising: a housing secured to the distal end of the flexible tube, and means for severing atheroma disposed on one side of the distal housing; wherein the inflatable balloon is disposed on a side of the housing generally opposite to the side on which the severing means is disposed.
Claim 30
Dependent Claim
45 words
A vascular catheter as in claim 25, wherein the housing has an elongate aperture on said one side and means for severing includes a cutting blade disposed in the housing and attached to a drive cable disposed in the first lumen of the flexible tube.
References Cited (Backward Citations)
US4425919A
Cited
US4545390A
Cited
EP0163502A2
Cited
US4669469A
Cited
US4762130A
Cited
US4817613A
Cited
US4900314A
Cited
US4889137A
Cited
US5071425A
Cited
US5015230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-05-15 | 1998-11-14 | 1999-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-15 | 2002-11-14 | 2003-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-15 | 2006-11-14 | 2007-05-16 | $7700.00 | Window Closed / Lapsed |