Patent US5203338A successfully refreshed from Google Patents.
US5203338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vascular catheter having low-profile distal end
Assignee: Boston Scientific Scimed Inc
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Filing: 1992-08-14
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Granted: 1993-04-20
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Expires: 2012-08-14
Abstract
Abstract An ultrasonic imaging catheter comprises a catheter body having a distal region and proximal region. The distal region has a reduced cross-sectional area compared to that of the proximal region, and the proximal region includes at least two lumens therethrough for accommodating a movable guidewire and a rotatable working element, respectively. The catheter body may be inserted over the moveable guidewire, with the guidewire passing through a lumen in the distal region and the guidewire lumen in the proximal region. After positioning the catheter body, the guidewire can be retracted from the distal region and into the proximal region, leaving the lumen in the distal region available for the rotatable working element. Such a construction allows over-the-wire imaging of the catheter while minimizing the width of the catheter in the distal region which remains available for placement of the working element.
Inventors
- 👤 Yue-Teh Jang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:48
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B8/00; A61B8/12; A61B8/44; A61B8/4444; A61B8/4461; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61M25/0026; A61M25/0029; A61M25/0067; A61M25/0068; A61B2017/00743; A61B2017/00778; A61B2017/22001; A61B2017/22038; A61B2017/22039; A61B2017/22041; A61B2017/22072; A61B2017/22074; A61B2017/22078; A61B17/34; A61B17/3417; A61B17/3421; A61B2017/3445; A61B2017/3447; A61B90/00; A61B90/36; A61B90/37; A61B2090/378; A61B2090/3782; A61B2090/3784; A61B8/445; A61M2025/0034; A61M2025/0036; A61M25/01; A61M2025/0183; A61M25/10; A61M2025/1043; A61M2025/1063; A61M25/0082
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
144 words
A vascular catheter comprising: a catheter body having a proximal end and a distal end, wherein the catheter body includes a proximal region having at least two lumens and a distal region having a single lumen which is connected to and in communication with both of the lumens in the proximal region and having a cross-sectional area which is less than the combined cross-sectional area of the two lumens of the proximal region; a drive shaft having a distal end and a proximal end and being reciprocatably disposed in one of the lumens in the proximal region of the catheter body; and a work element secured to the distal end of the driven shaft, whereby the work element may be extended into the single lumen in the distal region or retracted into the lumen in the proximal region by selectively reciprocating the drive cable.
Claim 2
Dependent Claim
144 words
A vascular catheter comprising: a catheter body having a proximal end and a distal end, wherein the catheter body includes a proximal region having at least two lumens and a distal region having a single lumen which is connected to and in communication with both of the lumens in the proximal region and having a cross-sectional area which is less than the combined cross-sectional area of the two lumens of the proximal region; a drive shaft having a distal end and a proximal end and being reciprocatably disposed in one of the lumens in the proximal region of the catheter body; and a work element secured to the distal end of the driven shaft, whereby the work element may be extended into the single lumen in the distal region or retracted into the lumen in the proximal region by selectively reciprocating the drive cable.
Claim 3
Dependent Claim
16 words
A vascular catheter as in claim 1, wherein the work element is an ultrasonic imaging transducer.
Claim 4
Dependent Claim
38 words
A vascular catheter as in claim 1, wherein the work element is an assembly including an ultrasonic imaging transducer and a mirror arranged in tandem with the mirror oriented to deflect a signal from the transducer radially outward.
Claim 5
Dependent Claim
41 words
A vascular catheter as in claim 1, further comprising means at the proximal end of the catheter body for mechanically coupling the drive shaft to a motor drive and means for axially translating the drive shaft while it is being rotated.
Claim 6
Dependent Claim
31 words
A vascular catheter as in claim 1, wherein the distal region has a width less than about 0.15 cm and the proximal region has a width greater than about 0.15 cm.
Claim 7
Dependent Claim
22 words
A vascular catheter as in claim 1, wherein the single lumen is formed contiguously with the two lumens in the proximal region.
Claim 8
Dependent Claim
32 words
A vascular catheter as in claim 1, wherein the distal region and proximal region are formed from a single tubular member with the proximal region being expanded relative to the distal region.
Claim 9
Dependent Claim
24 words
A vascular catheter as in claim 1, wherein the distal region and proximal region are formed from separate tubular members which are joined together.
Claim 10
Dependent Claim
24 words
A vascular catheter as in claim 1, wherein the proximal region including both lumens extends fully to the proximal end of the catheter body.
Claim 11
Dependent Claim
27 words
A vascular catheter as in claim 1, wherein the second lumen of the proximal region does not extend fully to the proximal end of the catheter body.
Claim 12
Dependent Claim
91 words
A vascular catheter as in claim 1, wherein the catheter body includes a first tubular member having at least one lumen and extending from the distal end to the proximal end of the catheter body and a second tubular member having at least one lumen and secured to the side of the first tubular member, wherein the two lumens converge at a junction spaced proximally from the distal end of the catheter body whereby the distal region lies distal to the junction and the proximal region lies proximal to the junction.
Claim 13
Dependent Claim
22 words
A vascular catheter as in claim 11, wherein the second tubular member extends fully to the proximal end of the catheter body.
Claim 14
Dependent Claim
24 words
A vascular catheter as in claim 11, wherein the second tubular member does not extend fully to the proximal end of the catheter body.
Claim 15
Dependent Claim
205 words
A vascular imaging catheter system comprising: a catheter body having a proximal end and a distal end, wherein the catheter body includes a proximal region having at least two lumens and a distal region having a single lumen which is connected to and in communication with both of the lumens in the proximal region and having a cross-sectional area which is less than the combined cross-sectional area of the two lumens of the proximal region; a drive shaft having a distal end and a proximal end and being reciprocatably disposed in a first of the catheter body lumens; an ultrasonic imaging transducer secured to the distal end of the drive shaft wherein the ultrasonic imaging transducer is mounted in a unitary assembly including a mirror arranged in tandem with the transducer and oriented to deflect a signal from the transducer radially outward; and a guidewire slidably disposed in a second of the catheter body lumens; whereby the catheter body may be introduced to a blood vessel over the guidewire and the guidewire and imaging transducer exchanged within the distal region of the catheter body by removing the guidewire from the proximal region of the catheter body and extending the imaging transducer into the distal region.
Claim 16
Dependent Claim
205 words
A vascular imaging catheter system comprising: a catheter body having a proximal end and a distal end, wherein the catheter body includes a proximal region having at least two lumens and a distal region having a single lumen which is connected to and in communication with both of the lumens in the proximal region and having a cross-sectional area which is less than the combined cross-sectional area of the two lumens of the proximal region; a drive shaft having a distal end and a proximal end and being reciprocatably disposed in a first of the catheter body lumens; an ultrasonic imaging transducer secured to the distal end of the drive shaft wherein the ultrasonic imaging transducer is mounted in a unitary assembly including a mirror arranged in tandem with the transducer and oriented to deflect a signal from the transducer radially outward; and a guidewire slidably disposed in a second of the catheter body lumens; whereby the catheter body may be introduced to a blood vessel over the guidewire and the guidewire and imaging transducer exchanged within the distal region of the catheter body by removing the guidewire from the proximal region of the catheter body and extending the imaging transducer into the distal region.
Claim 17
Dependent Claim
43 words
A vascular imaging catheter system as in claim 14, further comprising means at the proximal end of the catheter body for mechanically coupling the drive shaft to a motor drive and means for axially translating the drive shaft while it is being rotated.
Claim 18
Dependent Claim
33 words
A vascular imaging catheter system as in claim 14, wherein the distal region has a width less than about 0.15 cm and the proximal region has a width greater than about 0.15 cm.
Claim 19
Dependent Claim
24 words
A vascular imaging catheter system as in claim 14, wherein the single lumen is formed contiguously with the two lumens in the proximal region.
Claim 20
Dependent Claim
34 words
A vascular imaging catheter system as in claim 14, wherein the distal region and proximal region are formed from a single tubular member with the proximal region being expanded relative to the distal region.
Claim 21
Dependent Claim
26 words
A vascular imaging catheter system as in claim 14, wherein the distal region and proximal region are formed from separate tubular members which are joined together.
Claim 22
Dependent Claim
26 words
A vascular imaging catheter system as in claim 14, wherein the proximal region including both lumens extends fully to the proximal end of the catheter body.
Claim 23
Dependent Claim
93 words
A vascular imaging catheter system as in claim 14, wherein the catheter body includes a first tubular member having at least one lumen and extending from the distal end to the proximal end of the catheter body and a second tubular member having at least one lumen and secured to the side of the first tubular member, wherein the two lumens converge at a junction spaced proximally from the distal end of the catheter body whereby the distal region lies distal to the junction and the proximal region lies proximal to the junction.
Claim 24
Dependent Claim
24 words
A vascular imaging catheter system as in claim 11, wherein the second tubular member extends fully to the proximal end of the catheter body.
Claim 25
Dependent Claim
26 words
A vascular imaging catheter system as in claim 11, wherein the second tubular member does not extend fully to the proximal end of the catheter body.
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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) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |