US6036654A
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US
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Multi-lumen, multi-parameter catheter
Assignee: Transonic Systems Inc
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Filing: 1994-09-23
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Granted: 2000-03-14
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Expires: 2014-09-23
Abstract
Abstract A multi-lumen catheter capable of measuring cardiac output continuously, mixed venous oxygen saturation as well as other hemodynamic parameters. The catheter is also capable of undertaking therapeutic operations such as drug infusion and cardiac pacing. The catheter includes optical fibers for coupling to an external oximeter, an injectate port and thermistor for bolus thermodilution measurements, a heating element for inputting a heat signal and for coupling to an external processor for continuously measuring cardiac output, and a distal lumen for measuring pressure, withdrawing blood, guidewire passage or drug infusion. In a preferred embodiment, the catheter includes a novel lumen configuration permitting an additional infusion lumen for either fast drug infusion or cardiac pacing.
Inventors
- 👤 Michael D. Quinn
- 👤 Jaime Siman
- 👤 Mark L. Yelderman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:53
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6846; A61B5/6847; A61B5/6852; A61B5/02; A61B5/026; A61B5/0275; A61B5/028; A61B5/145; A61B5/1455; A61B5/1459
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
174 words
A multi-lumen catheter system configured to accommodate various diagnostic and therapeutic procedures, comprising: a flexible elongated tubing portion having a longitudinal axis, an exterior wall and defining multiple lumens therein, including: an interior lumen positioned off-center with respect to the longitudinal axis to be closer to a first side of the exterior wall, and farther from a second side of the exterior wall opposite the first side, wherein the interior lumen is elliptically shaped in cross-section; a plurality of outer lumens defined within the tubing portion surrounding the interior lumen and generally between the interior lumen and the exterior wall, a pair of the outer lumens being positioned between the interior lumen and the first side and having smaller cross-sectional areas than the other outer lumens for an efficient lumen space utilization, and at least one outer lumen being larger than the interior lumen and being positioned generally between the interior lumen and the second side, wherein the offset interior lumen accommodates the differing sized outer lumens to optimize their relative sizes and positions.
Claim 2
Dependent Claim
174 words
A multi-lumen catheter system configured to accommodate various diagnostic and therapeutic procedures, comprising: a flexible elongated tubing portion having a longitudinal axis, an exterior wall and defining multiple lumens therein, including: an interior lumen positioned off-center with respect to the longitudinal axis to be closer to a first side of the exterior wall, and farther from a second side of the exterior wall opposite the first side, wherein the interior lumen is elliptically shaped in cross-section; a plurality of outer lumens defined within the tubing portion surrounding the interior lumen and generally between the interior lumen and the exterior wall, a pair of the outer lumens being positioned between the interior lumen and the first side and having smaller cross-sectional areas than the other outer lumens for an efficient lumen space utilization, and at least one outer lumen being larger than the interior lumen and being positioned generally between the interior lumen and the second side, wherein the offset interior lumen accommodates the differing sized outer lumens to optimize their relative sizes and positions.
Claim 3
Dependent Claim
17 words
The multi-lumen catheter system of claim 1, wherein the number of outer lumens equals at least six.
Claim 4
Dependent Claim
56 words
The multi-lumen catheter system of claim 1, wherein one of the pair of outer lumens comprises an inflation lumen sized to permit passage of an inflation fluid, the catheter further including a balloon affixed to the distal tip of the tubing portion wherein the inflation lumen is in fluid communication with the interior of the balloon.
Claim 5
Dependent Claim
53 words
The multi-lumen catheter system of claim 1, wherein one of the pair of outer lumens is sized to permit passage of a temperature measuring wire, the catheter further including a temperature measuring sensor positioned proximate the distal end of the tubing portion and in communication with a monitor via the temperature measuring wire.
Claim 6
Dependent Claim
60 words
The multi-lumen catheter system of claim 4, further including a cross-over port formed between the one of the pair of outer lumens and an adjacent outer lumen, the cross-over port allowing passage of the temperature measuring wire, the temperature measuring sensor comprising a thermistor bead positioned in the adjacent outer lumen and in electrical communication with the temperature measuring wire.
Claim 7
Dependent Claim
24 words
The multi-lumen catheter system of claim 1, wherein the interior lumen has a first focus proximate to the longitudinal axis of the tubing portion.
Claim 8
Dependent Claim
16 words
The multi-lumen catheter system of claim 1, wherein the interior lumen is a fiber optic lumen.
Claim 9
Dependent Claim
69 words
The multi-lumen catheter system of claim 7, wherein the pair of outer lumens define: an inflation lumen having a smaller cross-sectional area than the fiber optic lumen, and catheter includes a balloon affixed to the distal tip of the tubing portion wherein the inflation lumen is in fluid communication with the interior of the balloon; and a wire-conduit lumen having a smaller cross-sectional area than the fiber optic lumen.
Claim 10
Dependent Claim
40 words
The multi-lumen catheter system of claim 8, wherein the catheter includes a temperature measuring sensor positioned proximate the distal end of the tubing portion and in communication with a monitor via a temperature measuring wire positioned in the wire-conduit lumen.
Claim 11
Dependent Claim
147 words
The multi-lumen catheter system of claim 9, wherein the outer lumens other than the pair define: a heater wire lumen having a cross-sectional area larger than the fiber optic lumen, and the catheter system includes a heater connected via wires extending through the heater wire lumen to a heating filament wound around the exterior wall; a distal lumen having a cross-sectional area larger than the heater wire lumen and extending to the distal end of the tubing portion to permit passage of a guidewire; an injectate lumen having a cross-sectional area larger than the heater wire lumen and terminating in an injectate port through the exterior wall and located proximally from the temperature measuring sensor; and an infusion lumen having a cross-sectional area larger than all of the other lumens and terminating in an infusion port through the exterior wall and located proximally from the injectate port.
Claim 12
Dependent Claim
31 words
The multi-lumen catheter system of claim 8, wherein the catheter system includes a heater connected via wires extending through the wire-conduit lumen to a heating filament wound around the exterior wall.
Claim 13
Dependent Claim
189 words
A multi-lumen catheter system configured to accommodate various diagnostic and therapeutic procedures, comprising: a flexible elongated tubing portion having an exterior wall and a plurality of webs defining multiple lumens within the catheter, including: an interior, fiber optic lumen elliptically shaped in cross-section and positioned off-center to be closer to a first side of the exterior wall, and farther from a second side of the exterior wall opposite the first side; and a plurality of outer lumens surrounding the fiber optic lumen and generally between the fiber optic lumen and the exterior wall, a pair of the outer lumens being positioned generally between the fiber optic lumen and the first side of the exterior wall and sized smaller in cross-sectional area than the other outer lumens for an efficient lumen space utilization, and at least one outer lumen being larger than the fiber optic lumen and being positioned generally between the fiber optic lumen and the second side of the exterior wall opposite the first side, wherein the relative sizes and positions of the lumens between the webs enhances use of the cross-sectional area and kink-resistance of the catheter.
Claim 14
Dependent Claim
189 words
A multi-lumen catheter system configured to accommodate various diagnostic and therapeutic procedures, comprising: a flexible elongated tubing portion having an exterior wall and a plurality of webs defining multiple lumens within the catheter, including: an interior, fiber optic lumen elliptically shaped in cross-section and positioned off-center to be closer to a first side of the exterior wall, and farther from a second side of the exterior wall opposite the first side; and a plurality of outer lumens surrounding the fiber optic lumen and generally between the fiber optic lumen and the exterior wall, a pair of the outer lumens being positioned generally between the fiber optic lumen and the first side of the exterior wall and sized smaller in cross-sectional area than the other outer lumens for an efficient lumen space utilization, and at least one outer lumen being larger than the fiber optic lumen and being positioned generally between the fiber optic lumen and the second side of the exterior wall opposite the first side, wherein the relative sizes and positions of the lumens between the webs enhances use of the cross-sectional area and kink-resistance of the catheter.
Claim 15
Dependent Claim
25 words
The multi-lumen catheter system of claim 12, wherein the fiber optic lumen has a first focus proximate to the longitudinal axis of the tubing portion.
Claim 16
Dependent Claim
79 words
The multi-lumen catheter system of claim 12, further including a plurality of optical fibers substantially filling the fiber optic lumen so that when forces are imparted to the exterior wall they are transmitted through the webs on one side of the fiber optic lumen and across the fiber optic lumen to the webs on the opposite side of the fiber optic lumen and to the exterior wall by virtue of the solid optical fibers within the fiber optic lumen.
Claim 17
Dependent Claim
146 words
The multi-lumen catheter system of claim 12, wherein the outer lumens other than the pair define: a heater wire lumen having a cross-sectional area larger than the fiber optic lumen, and the catheter system includes a heater connected via wires extending through the heater wire lumen to a heating filament wound around the exterior wall; a distal lumen having a cross-sectional area larger than the heater wire lumen and extending to the distal end of the tubing portion to permit passage of a guidewire; an injectate lumen having a cross-sectional area larger than the heater wire lumen and terminating in an injectate port through the exterior wall and located proximally from the heating filament; and an infusion lumen having a cross-sectional area larger than all of the other lumens and terminating in an infusion port through the exterior wall and located proximally from the injectate port.
References Cited (Backward Citations)
US4178936A
Cited
US4729409A
Cited
US4406656A
Cited
FR2513520A1
Cited
US4574173A
Cited
US4838881A
Cited
US5158540A
Cited
EP0226220A2
Cited
US4813429A
Cited
US4753640A
Cited
US4718423A
Cited
US4776340A
Cited
US4901734A
Cited
US4941475A
Cited
US4975055A
Cited
EP0417781A1
Cited
US5176144A
Cited
US5167623A
Cited
US5209741A
Cited
US5435308A
Cited
US5378230A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-03-14 | 2003-09-13 | 2004-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-14 | 2007-09-13 | 2008-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-14 | 2011-09-13 | 2012-03-14 | $7700.00 | Window Closed / Lapsed |