US5181908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for lavaging with oxygenated irrigating fluid while suctioning
Assignee: Smiths Medical ASD Inc
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Filing: 1990-12-07
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Granted: 1993-01-26
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Expires: 2010-12-07
Abstract
Abstract A suction catheter and method of using same in which oxygenated irrigating fluid is provided to the suctioning site. The oxygenated fluid can be formed using a Y-connector to mix oxygen and fluid in a single conduit, a reservoir of fluid having oxygen bubbled into it, or through the use of an oxygen exchanger. Pressurized oxygen-containing gas may be fed to the Y-connector to force the gas and irrigating fluid out through the catheter. The suction may be a dual lumen catheter or a tube within a tube.
Inventors
- 👤 Craig J. Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:47
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0463; A61M16/0486; A61M16/08; A61M16/0816; A61M16/0833; A61M1/00; A61M1/71; A61M1/74; A61M1/741; A61M1/7413; A61M1/77; A61M1/84; A61M1/85; A61M2202/00; A61M2202/04; A61M2202/0468; A61M2202/0476; A61M25/00; A61M25/01; A61M25/0105; A61M25/0111
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
153 words
A suction catheter suitable for use in removing undesirable fluid from a patient, said suction catheter comprising: a tube having a proximal end and a distal end, said distal end being suitable for insertion into a patient wherein said tube includes a primary conduit for removing fluid from a patient upon application of a vacuum and a secondary conduit for providing liquid for lavaging said patient; a cross piece mounted so as to surround said tube in the vicinity of the distal end of said tube; a suction control means attached to said tube in the vicinity of the proximal end of said tube; a vacuum connector at the proximal end of said suction control means; an input tube, connected to said secondary conduit, for providing oxygenated liquid to said secondary conduit; and a reservoir of irrigating fluid connected to said input tube, said reservoir having oxygen bubbled in through said irrigating fluid.
Claim 2
Dependent Claim
153 words
A suction catheter suitable for use in removing undesirable fluid from a patient, said suction catheter comprising: a tube having a proximal end and a distal end, said distal end being suitable for insertion into a patient wherein said tube includes a primary conduit for removing fluid from a patient upon application of a vacuum and a secondary conduit for providing liquid for lavaging said patient; a cross piece mounted so as to surround said tube in the vicinity of the distal end of said tube; a suction control means attached to said tube in the vicinity of the proximal end of said tube; a vacuum connector at the proximal end of said suction control means; an input tube, connected to said secondary conduit, for providing oxygenated liquid to said secondary conduit; and a reservoir of irrigating fluid connected to said input tube, said reservoir having oxygen bubbled in through said irrigating fluid.
Claim 3
Dependent Claim
169 words
A suction catheter suitable for use in removing undesirable fluid from a patient, said suction catheter comprising: a tube having a proximal end and a distal end, said distal end being suitable for insertion into a patient wherein said tube includes a primary conduit for removing fluid from a patient upon application of a vacuum and a secondary conduit for providing liquid for lavaging said patient; a cross piece mounted so as to surround said tube in the vicinity of the distal end of said tube; a suction control means attached to said tube in the vicinity of the proximal end of said tube; a vacuum connector at the proximal end of said suction control means; an input tube, connected to said secondary conduit, for providing oxygenated liquid to said secondary conduit; an oxygen exchanger connected to said input tube; a source of oxygen connected so as to feed oxygen to said oxygen exchanger; and a source of irrigating fluid connected to feed irrigating fluid to said oxygen exchanger.
Claim 4
Dependent Claim
169 words
A suction catheter suitable for use in removing undesirable fluid from a patient, said suction catheter comprising: a tube having a proximal end and a distal end, said distal end being suitable for insertion into a patient wherein said tube includes a primary conduit for removing fluid from a patient upon application of a vacuum and a secondary conduit for providing liquid for lavaging said patient; a cross piece mounted so as to surround said tube in the vicinity of the distal end of said tube; a suction control means attached to said tube in the vicinity of the proximal end of said tube; a vacuum connector at the proximal end of said suction control means; an input tube, connected to said secondary conduit, for providing oxygenated liquid to said secondary conduit; an oxygen exchanger connected to said input tube; a source of oxygen connected so as to feed oxygen to said oxygen exchanger; and a source of irrigating fluid connected to feed irrigating fluid to said oxygen exchanger.
Claim 5
Dependent Claim
180 words
A suction catheter suitable for use in removing undesirable fluid from a patient, said suction catheter comprising: a tube having a proximal end and a distal end, said distal end being suitable for insertion into a patient wherein said tube includes a primary conduit for removing fluid from a patient upon application of a vacuum and a secondary conduit for providing liquid for lavaging said patient; a cross piece mounted so as to surround said tube in the vicinity of the distal end of said tube; a suction control means attached to said tube in the vicinity of the proximal end of said tube; a vacuum connector at the proximal end of said suction control means; an input tube, connected to said secondary conduit, for providing oxygenated liquid to said secondary conduit; a Y-connector having an output end connected to said input tube and two input ends; a source of oxygen connected to one of said two input ends of said Y-connector; and a source of irrigating fluid connected to the other of said two input ends of said Y-connector.
Claim 6
Dependent Claim
180 words
A suction catheter suitable for use in removing undesirable fluid from a patient, said suction catheter comprising: a tube having a proximal end and a distal end, said distal end being suitable for insertion into a patient wherein said tube includes a primary conduit for removing fluid from a patient upon application of a vacuum and a secondary conduit for providing liquid for lavaging said patient; a cross piece mounted so as to surround said tube in the vicinity of the distal end of said tube; a suction control means attached to said tube in the vicinity of the proximal end of said tube; a vacuum connector at the proximal end of said suction control means; an input tube, connected to said secondary conduit, for providing oxygenated liquid to said secondary conduit; a Y-connector having an output end connected to said input tube and two input ends; a source of oxygen connected to one of said two input ends of said Y-connector; and a source of irrigating fluid connected to the other of said two input ends of said Y-connector.
Claim 7
Independent Claim
87 words
A method for removing undesired debris from a cavity in a patient comprising the steps of: inserting a suction catheter into said cavity; dissolving oxygen in an irrigating fluid solution to produce oxygenated irrigating fluid by bubbling oxygen in a reservoir of irrigating fluid; delivering the oxygenated irrigating fluid through a first conduit in said catheter to said cavity so as to dislodge debris; and administering a vacuum through a second conduit in said catheter so as to remove dislodged debris and irrigating fluid from said cavity.
Claim 8
Independent Claim
87 words
A method for removing undesired debris from a cavity in a patient comprising the steps of: inserting a suction catheter into said cavity; dissolving oxygen in an irrigating fluid solution to produce oxygenated irrigating fluid by bubbling oxygen in a reservoir of irrigating fluid; delivering the oxygenated irrigating fluid through a first conduit in said catheter to said cavity so as to dislodge debris; and administering a vacuum through a second conduit in said catheter so as to remove dislodged debris and irrigating fluid from said cavity.
Claim 9
Dependent Claim
20 words
The method of claim 4 further comprising the step of ventilating said patient during said steps of delivering and administering.
Claim 10
Independent Claim
91 words
A method for removing undesired debris from a cavity in a patient comprising the steps of: introducing a catheter into said cavity; feeding an irrigating fluid into one arm of a Y-connector which feeds said irrigating fluid through said catheter; feeding a gas under pressure into a second arm of said Y-connector to mix said gas with said fluid and to eject said mixture of fluid and gas under force from said catheter and into said cavity; and administering a vacuum in said catheter to remove dislodged debris and irrigating fluid.
Claim 11
Independent Claim
91 words
A method for removing undesired debris from a cavity in a patient comprising the steps of: introducing a catheter into said cavity; feeding an irrigating fluid into one arm of a Y-connector which feeds said irrigating fluid through said catheter; feeding a gas under pressure into a second arm of said Y-connector to mix said gas with said fluid and to eject said mixture of fluid and gas under force from said catheter and into said cavity; and administering a vacuum in said catheter to remove dislodged debris and irrigating fluid.
Claim 12
Independent Claim
89 words
A method for removing undesired debris from a cavity in a patient comprising the steps of: inserting a suction catheter into said cavity; dissolving oxygen in an irrigating fluid solution to produce oxygenated irrigating fluid by feeding oxygen and said irrigating fluid through an oxygen exchanger; delivering the oxygenated irrigating fluid through a first conduit in said catheter to said cavity so as to dislodge debris; and administering a vacuum through a second conduit in said catheter so as to remove dislodged debris and irrigating fluid from said cavity.
Claim 13
Independent Claim
89 words
A method for removing undesired debris from a cavity in a patient comprising the steps of: inserting a suction catheter into said cavity; dissolving oxygen in an irrigating fluid solution to produce oxygenated irrigating fluid by feeding oxygen and said irrigating fluid through an oxygen exchanger; delivering the oxygenated irrigating fluid through a first conduit in said catheter to said cavity so as to dislodge debris; and administering a vacuum through a second conduit in said catheter so as to remove dislodged debris and irrigating fluid from said cavity.
Claim 14
Independent Claim
100 words
A method for removing undesired debris from a cavity in a patient comprising the steps of: inserting a suction catheter into said cavity; dissolving oxygen in an irrigating fluid solution to produce oxygenated irrigating fluid by feeding oxygen through one input end of a Y-connector and feeding irrigating fluid through a second input end of the Y-connector; delivering the oxygenated irrigating fluid through a first conduit in said catheter to said cavity so as to dislodge debris; and administering a vacuum through a second conduit in said catheter so as to remove dislodged debris and irrigating fluid from said cavity.
Claim 15
Independent Claim
100 words
A method for removing undesired debris from a cavity in a patient comprising the steps of: inserting a suction catheter into said cavity; dissolving oxygen in an irrigating fluid solution to produce oxygenated irrigating fluid by feeding oxygen through one input end of a Y-connector and feeding irrigating fluid through a second input end of the Y-connector; delivering the oxygenated irrigating fluid through a first conduit in said catheter to said cavity so as to dislodge debris; and administering a vacuum through a second conduit in said catheter so as to remove dislodged debris and irrigating fluid from said cavity.
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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) | 1996-01-26 | 1996-07-27 | 1997-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-26 | 2000-07-27 | 2001-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-26 | 2004-07-27 | 2005-01-26 | $7700.00 | Window Closed / Lapsed |