US6027475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter shaft with an oblong transverse cross-section
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 1997-01-02
•
Granted: 2000-02-22
•
Expires: 2017-01-02
Abstract
Abstract A balloon dilatation catheter having a catheter shaft with an oblong transverse cross-section with one transverse dimension in a first direction being significantly larger than a second transverse dimension in a direction perpendicular to the first direction. The first dimension is about 1.1 to about 3 times greater, preferably about 1.2 to about 2.5 times greater than the second dimension. In one embodiment, a length of the distal shaft section has inner and outer tubular members where about 30% to not more than about 90% of the inner periphery of the outer tubular member takes the shape of and is secured to the exterior of the inner tubular member. In another embodiment the flexible distal shaft section is an extruded section having an oval or elliptical transverse cross-section. Preferably a pseudoelastic hypotube of NiTi alloy defines at least part of the inflation lumen within the catheter shaft. In another embodiment of the invention the proximal shaft of the catheter has an inner and outer tubular member.
Inventors
- 👤 Motasim M. Sirhan
- 👤 Jovito L. Fernando, Sr.
- 👤 Troy L. Thornton
- 👤 Patrick K. Campbell
- 👤 Eric Williams
- 👤 Lawrence D. Wasicek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:46
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61L; A61L29/00; A61L29/04; A61L29/041; A61M25/0021; A61M25/0023; A61M25/0043; A61M2025/0004; A61M25/0026; A61M2025/0034; A61M2025/0037; A61M2025/0039; A61M2025/0063; A61M25/01; A61M2025/0177; A61M2025/0183; A61M2025/1043; A61M2025/1063; A61M2025/1097; A61M25/0009; A61M25/0029
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
166 words
An elongated dilatation catheter for performing an angioplasty procedure, comprising: a) an elongated catheter shaft having proximal and distal ends, a distal guidewire port in the distal end, an inflation port spaced proximal to the distal end, a guidewire receiving inner lumen extending therein to the distal guidewire port in the distal end and an inflation lumen extending therein to inflation port; b) an inflatable dilatation member mounted on the catheter shaft proximal to the distal end of the catheter shaft for performing an angioplasty procedure which has an interior in fluid communication with the inflation lumen through the inflation port; and c) a flexible distal catheter shaft section which is proximal to the inflatable dilation member, which has a length of at least about 4 cm and which is formed of an extruded dual lumen tubing with an oblong transverse shape with a first transverse dimension in a first direction substantially greater than a second transverse dimension in second direction perpendicular to the first direction.
Claim 2
Dependent Claim
166 words
An elongated dilatation catheter for performing an angioplasty procedure, comprising: a) an elongated catheter shaft having proximal and distal ends, a distal guidewire port in the distal end, an inflation port spaced proximal to the distal end, a guidewire receiving inner lumen extending therein to the distal guidewire port in the distal end and an inflation lumen extending therein to inflation port; b) an inflatable dilatation member mounted on the catheter shaft proximal to the distal end of the catheter shaft for performing an angioplasty procedure which has an interior in fluid communication with the inflation lumen through the inflation port; and c) a flexible distal catheter shaft section which is proximal to the inflatable dilation member, which has a length of at least about 4 cm and which is formed of an extruded dual lumen tubing with an oblong transverse shape with a first transverse dimension in a first direction substantially greater than a second transverse dimension in second direction perpendicular to the first direction.
Claim 3
Dependent Claim
27 words
The dilatation catheter of claim 1 wherein the first transverse dimension is at least 1.1 but not more than 3 times greater than the second transverse dimension.
Claim 4
Dependent Claim
25 words
The dilatation catheter of claim 1 wherein the first transverse dimension is at least about 1.2 to about 2.5 times greater than the second dimension.
Claim 5
Dependent Claim
22 words
The dilatation catheter of claim 1 wherein the first transverse dimension is at least 0.003 inch greater than the second transverse dimension.
Claim 6
Dependent Claim
22 words
The dilatation catheter of claim 1 wherein the first transverse dimension is at least 0.005 inch greater than the second transverse dimension.
Claim 7
Dependent Claim
19 words
The dilatation catheter of claim 1 wherein the distal catheter shaft has an elliptical or oviform transverse cross-sectional shape.
Claim 8
Dependent Claim
26 words
The dilatation catheter of claim 1 wherein the distal catheter shaft section having an oblong transverse shape is not more than about 40 cm in length.
Claim 9
Dependent Claim
18 words
The dilatation catheter of claim 1 wherein the proximal catheter shaft section has an oblong transverse cross-sectional shape.
Claim 10
Dependent Claim
43 words
The dilatation catheter of claim 1 wherein a proximal guidewire port is spaced a short distance proximally from the inflatable dilatation member and a substantial distance from the proximal end of the catheter and is in communication with the guidewire receiving inner lumen.
Claim 11
Dependent Claim
43 words
The dilatation catheter of claim 9 wherein at least one perfusion port extends through the flexible distal shaft section proximal to the inflatable dilatation member and distal to the proximal guidewire port and is in fluid communication with the guidewire receiving inner lumen.
Claim 12
Dependent Claim
37 words
The dilatation catheter of claim 1 wherein at least one perfusion port is provided in the flexible distal shaft section distal to the inflatable dilatation member which is in fluid communication with the guidewire receiving inner lumen.
Claim 13
Dependent Claim
27 words
The dilatation catheter of claim 11 wherein the metal hypotubing is formed of a metallic alloy selected from the group consisting of stainless steel and NiTi alloys.
Claim 14
Dependent Claim
41 words
The dilatation catheter of claim 1 wherein the catheter has a proximal section formed at least in part of metal hypotubing having an inner lumen in fluid communication with the inflation lumen in the flexible distal section of the catheter shaft.
Claim 15
Dependent Claim
16 words
The dilatation catheter of claim 13 wherein the alloy is a NiTi alloy having pseudoelastic characteristics.
Claim 16
Dependent Claim
57 words
The dilatation catheter of claim 1 wherein proximal guidewire port is provided through a wall of the flexible distal catheter shaft section which is spaced a short distance proximally from the inflatable dilatation member and substantial distance from the proximal end of the catheter shaft and which is in fluid communication with the guidewire receiving inner lumen.
Claim 17
Dependent Claim
46 words
The dilatation catheter of claim 15 wherein at least one perfusion port extends through a wall of the flexible distal catheter shaft section proximal to the inflatable dilatation member and distal to the proximal guidewire port and is in fluid communication with the guidewire receiving lumen.
Claim 18
Dependent Claim
34 words
The dilatation catheter of claim 15 wherein a slit extends distally from the proximal guidewire port through a portion of the flexible distal catheter shaft section in communication with the guidewire receiving inner lumen.
Claim 19
Dependent Claim
16 words
The dilatation catheter of claim 17 wherein a supporting tube is disposed within the inflation lumen.
Claim 20
Dependent Claim
24 words
The dilatation catheter of claim 1 including a hypotube extending within the catheter shaft defining at least a proximal section of the catheter shaft.
Claim 21
Dependent Claim
24 words
The dilatation catheter of claim 19 wherein the hypotube is formed of a psuedoelastic NiTi alloy having a stable austenite phase at body temperature.
Claim 22
Dependent Claim
234 words
balloon dilatation catheter for performing an angioplasty procedure, comprising: a) an elongated catheter shaft having proximal and distal ends, a guidewire port in the distal end, an inflation port spaced from the distal end, a guidewire receiving inner lumen extending therein to the distal guidewire port, and an inflation lumen extending therein to the inflation port; b) an inflatable dilatation member mounted proximal to the distal end of the catheter shaft which has an interior in fluid communication with the inflation lumen through the inflation port; c) a proximal catheter shaft section having an inner tubular member which defines the guidewire receiving inner lumen in the proximal shaft section and an outer tubular member disposed about the inner tubular member and defining between the inner and outer tubular member the inflation lumen within the proximal shaft section; and d) flexible distal catheter shaft section distal to the proximal catheter shaft section which has a length of at least about 4 cm, which is formed of an extruded dual lumen tubing with a first transverse dimension in a first direction being substantially greater than a second transverse dimension in a second direction perpendicular to the first direction along said length, which has a first inner lumen forming the guidewire receiving inner lumen within the distal catheter shaft section and which has a second inner lumen forming the inflation lumen within the distal catheter shaft section.
Claim 23
Dependent Claim
234 words
balloon dilatation catheter for performing an angioplasty procedure, comprising: a) an elongated catheter shaft having proximal and distal ends, a guidewire port in the distal end, an inflation port spaced from the distal end, a guidewire receiving inner lumen extending therein to the distal guidewire port, and an inflation lumen extending therein to the inflation port; b) an inflatable dilatation member mounted proximal to the distal end of the catheter shaft which has an interior in fluid communication with the inflation lumen through the inflation port; c) a proximal catheter shaft section having an inner tubular member which defines the guidewire receiving inner lumen in the proximal shaft section and an outer tubular member disposed about the inner tubular member and defining between the inner and outer tubular member the inflation lumen within the proximal shaft section; and d) flexible distal catheter shaft section distal to the proximal catheter shaft section which has a length of at least about 4 cm, which is formed of an extruded dual lumen tubing with a first transverse dimension in a first direction being substantially greater than a second transverse dimension in a second direction perpendicular to the first direction along said length, which has a first inner lumen forming the guidewire receiving inner lumen within the distal catheter shaft section and which has a second inner lumen forming the inflation lumen within the distal catheter shaft section.
Claim 24
Dependent Claim
27 words
The dilatation catheter of claim 21 wherein the first transverse dimension is at least 1.1 but not more than 3 times greater than the second transverse dimension.
Claim 25
Dependent Claim
25 words
The dilatation catheter of claim 21 wherein the first transverse dimension is at least about 1.2 to about 2.5 times greater than the second dimension.
Claim 26
Dependent Claim
20 words
The dilatation catheter of claim 21 wherein the first dimension is at least 0.003 inch greater than the second dimension.
Claim 27
Dependent Claim
20 words
The dilatation catheter of claim 21 wherein the first dimension is at least 0.005 inch greater than the second dimension.
Claim 28
Dependent Claim
20 words
The dilatation catheter of claim 21 wherein the distal catheter shaft section has an elliptical or oviform transverse cross-sectional shape.
Claim 29
Dependent Claim
43 words
The dilatation catheter of claim 21 wherein a proximal guidewire port is spaced a short distance proximally from the inflatable dilatation member and a substantial distance from the proximal end of the catheter and is in communication with the guidewire receiving inner lumen.
Claim 30
Dependent Claim
26 words
The dilatation catheter of claim 27 wherein the proximal guidewire port is spaced about 5 to about 40 cm from the distal end of the shaft.
Claim 31
Dependent Claim
26 words
The dilatation catheter of claim 27 wherein the proximal guidewire port is spaced about 10 to about 30 cm from the distal end of the shaft.
Claim 32
Dependent Claim
43 words
The dilatation catheter of claim 27 wherein at least one perfusion port extends through the flexible distal shaft section proximal to the inflatable dilatation member and distal to the proximal guidewire port and is in fluid communication with the guidewire receiving inner lumen.
Claim 33
Dependent Claim
37 words
The dilatation catheter of claim 21 wherein at least one perfusion port is provided in the flexible distal shaft section distal to the inflatable dilatation member which is in fluid communication with the guidewire receiving inner lumen.
Claim 34
Dependent Claim
41 words
The dilatation catheter of claim 21 wherein the catheter has a proximal section formed at least in part of metal hypotubing having an inner lumen in fluid communication with the inflation lumen in the flexible distal section of the catheter shaft.
Claim 35
Dependent Claim
27 words
The dilatation catheter of claim 32 wherein the metal hypotubing is formed of a metallic alloy selected from the group consisting of stainless steel and NiTi alloys.
Claim 36
Dependent Claim
16 words
The dilatation catheter of claim 33 wherein the alloy is a NiTi alloy having superelastic characteristics.
Claim 37
Dependent Claim
196 words
A balloon dilatation catheter for performing an angioplasty procedure, comprising: a) an elongated catheter shaft having proximal and distal ends, a guidewire port in the distal end, a guidewire receiving inner lumen extending therein to the distal guidewire port, an inflation port spaced proximally from the distal end and an inflation lumen extending therein to the inflation port; b) an inflatable dilatation member mounted proximal to the distal end of the catheter shaft which has an interior in fluid communication with the inflation lumen through the inflation port; c) a flexible distal catheter shaft section distal to the proximal catheter shaft section which has a length of at least about 4 cm, which has a first transverse dimension in a first direction substantially greater than a second transverse dimension in a second direction perpendicular to the first direction along said length, which has a first inner lumen forming at least part of the guidewire receiving inner lumen within the distal catheter shaft section and which has a second inner lumen forming part of the inflation lumen within the distal catheter shaft section with the first and second inner lumens being disposed in a generally parallel relationship.
Claim 38
Dependent Claim
196 words
A balloon dilatation catheter for performing an angioplasty procedure, comprising: a) an elongated catheter shaft having proximal and distal ends, a guidewire port in the distal end, a guidewire receiving inner lumen extending therein to the distal guidewire port, an inflation port spaced proximally from the distal end and an inflation lumen extending therein to the inflation port; b) an inflatable dilatation member mounted proximal to the distal end of the catheter shaft which has an interior in fluid communication with the inflation lumen through the inflation port; c) a flexible distal catheter shaft section distal to the proximal catheter shaft section which has a length of at least about 4 cm, which has a first transverse dimension in a first direction substantially greater than a second transverse dimension in a second direction perpendicular to the first direction along said length, which has a first inner lumen forming at least part of the guidewire receiving inner lumen within the distal catheter shaft section and which has a second inner lumen forming part of the inflation lumen within the distal catheter shaft section with the first and second inner lumens being disposed in a generally parallel relationship.
Claim 39
Dependent Claim
247 words
A balloon dilatation catheter for performing an angioplasty procedure, comprising: a) an elongated catheter shaft having proximal and distal ends, a guidewire port in the distal end, an inflation port spaced proximal to the distal end, a guidewire receiving inner lumen extending therein to the distal guidewire port, and an inflation lumen extending therein to the inflation port; b) an inflatable dilatation member mounted proximal to the distal end of the catheter shaft which has an interior in fluid communication with the inflation lumen through the inflation port; c) a proximal catheter shaft section having an inner tubular member which defines at least part of the guidewire receiving inner lumen within the proximal shaft section and an outer tubular member disposed about the inner tubular member and defining between the inner and outer tubular member at least part of the inflation lumen within the proximal shaft section; and d) a flexible distal catheter shaft section which has a length of at least about 4 cm, which has a first transverse dimension in a first direction substantially greater than a second transverse dimension in a second direction perpendicular to the first direction along said length, which has a first inner lumen forming at least part of the guidewire receiving inner lumen within the distal catheter shaft section and a second inner lumen forming part of the inflation lumen within the distal catheter shaft section with the first and second inner lumens being disposed in a generally parallel relationship.
Claim 40
Dependent Claim
247 words
A balloon dilatation catheter for performing an angioplasty procedure, comprising: a) an elongated catheter shaft having proximal and distal ends, a guidewire port in the distal end, an inflation port spaced proximal to the distal end, a guidewire receiving inner lumen extending therein to the distal guidewire port, and an inflation lumen extending therein to the inflation port; b) an inflatable dilatation member mounted proximal to the distal end of the catheter shaft which has an interior in fluid communication with the inflation lumen through the inflation port; c) a proximal catheter shaft section having an inner tubular member which defines at least part of the guidewire receiving inner lumen within the proximal shaft section and an outer tubular member disposed about the inner tubular member and defining between the inner and outer tubular member at least part of the inflation lumen within the proximal shaft section; and d) a flexible distal catheter shaft section which has a length of at least about 4 cm, which has a first transverse dimension in a first direction substantially greater than a second transverse dimension in a second direction perpendicular to the first direction along said length, which has a first inner lumen forming at least part of the guidewire receiving inner lumen within the distal catheter shaft section and a second inner lumen forming part of the inflation lumen within the distal catheter shaft section with the first and second inner lumens being disposed in a generally parallel relationship.
Claim 41
Dependent Claim
19 words
The dilatation catheter of claim 36 wherein the distal catheter shaft has an elliptical or oviform transverse cross-sectional shape.
Claim 42
Dependent Claim
26 words
The dilatation catheter of claim 36 wherein the distal catheter shaft section having an oblong transverse shape is not more than about 40 cm in length.
References Cited (Backward Citations)
US2248934A
Cited
US2457244A
Cited
US2912981A
Cited
US2930377A
Cited
US3112748A
Cited
US3769981A
Cited
US3915171A
Cited
US3978863A
Cited
US3983879A
Cited
US4458677A
Cited
US4295464A
Cited
US4406656A
Cited
US4553959A
Cited
US4484579A
Cited
US4563170A
Cited
EP0197787A2
Cited
US5102390A
Cited
US4601713A
Cited
DE3522782A1
Cited
US4723936A
Cited
US4790315A
Cited
US4776841A
Cited
US4771777A
Cited
EP0274129A2
Cited
US4748982A
Cited
US4850373A
Cited
US4906230A
Cited
US4892519A
Cited
DE3742710A1
Cited
US4944745A
Cited
US4943278A
Cited
US5171222A
Cited
US4877031A
Cited
US4998923A
Cited
US5071425A
Cited
US4917666A
Cited
EP0374859A1
Cited
US5046503A
Cited
EP0397055A1
Cited
US5040548A
Cited
US5217440A
Cited
US5037386A
Cited
EP0441384A2
Cited
US5106368A
Cited
US5370616A
Cited
US5156594A
Cited
EP0491349A2
Cited
US5149330A
Cited
EP0513818A1
Cited
US5154725A
Cited
US5135535A
Cited
US5279562A
Cited
US5195971A
Cited
WO1993018813A1
Cited
WO1993020882A1
Cited
US5300025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2003-02-21 | 2003-08-23 | 2004-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-21 | 2007-08-23 | 2008-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-21 | 2011-08-23 | 2012-02-22 | $7700.00 | Window Closed / Lapsed |