Patent US1969083A successfully refreshed from Google Patents.
US4447235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thoracentesis device
Assignee: BLAIR MEDICAL PRODUCTS Inc A CORP OF FLA
•
Filing: 1981-05-07
•
Granted: 1984-05-08
•
Expires: 2001-05-07
Abstract
Abstract A thoracentesis device which includes an elongated flexible catheter fixed at its proximate end to an elongated conduit which is aligned therewith. The conduit is provided with a seal which seals around a hollow needle which penetrates the seal means and passes through the conduit and the catheter and slightly beyond the catheter distal end. A vacuum source is connected to the proximate needle end. The seal also reseals the elongated conduit when the needle is removed. The conduit includes a valve which can be manipulated to connect the catheter to a side conduit when the needle is removed.
Inventors
- 👤 John M. Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:43
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3415; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0606; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M2210/00; A61M2210/10; A61M2210/101; A61M25/0067; A61M25/0068; A61M25/007
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
215 words
A thoracentesis device comprising an elongated flexible catheter having a distal end and a proximate end, means defining an elongated conduit including a value means and connected to the proximate end of said catheter and in line therewith, seal means at the distal end of said elongated conduit means continuously sealing said conduit means and the proximate end of said catheter from the atmosphere, a hollow needle having a sharpened distal end adapted to penetrate said seal means and to extend through said conduit means and said catheter and beyond the distal end thereof, means connected to the proximate end of said hollow needle for applying negative pressure to said needle, said needle being operable for complete withdrawl from said elongated conduit means and said seal means, said seal means being self-sealing and re-sealing said conduit means upon complete withdrawal of said needle from said conduit means and separation of said needle from said conduit means, said valve means being between said seal means and said catheter and said valve means movable to a first position where it connects said catheter to a side conduit means connected to and extending laterally of said elongated conduit means, and to a second position where it blocks communication between said elongated conduit means and said side conduit means.
Claim 2
Dependent Claim
215 words
A thoracentesis device comprising an elongated flexible catheter having a distal end and a proximate end, means defining an elongated conduit including a value means and connected to the proximate end of said catheter and in line therewith, seal means at the distal end of said elongated conduit means continuously sealing said conduit means and the proximate end of said catheter from the atmosphere, a hollow needle having a sharpened distal end adapted to penetrate said seal means and to extend through said conduit means and said catheter and beyond the distal end thereof, means connected to the proximate end of said hollow needle for applying negative pressure to said needle, said needle being operable for complete withdrawl from said elongated conduit means and said seal means, said seal means being self-sealing and re-sealing said conduit means upon complete withdrawal of said needle from said conduit means and separation of said needle from said conduit means, said valve means being between said seal means and said catheter and said valve means movable to a first position where it connects said catheter to a side conduit means connected to and extending laterally of said elongated conduit means, and to a second position where it blocks communication between said elongated conduit means and said side conduit means.
Claim 3
Dependent Claim
24 words
A thoracentesis device as claimed in claim 1, said negative pressure applying means including a syringe connected to the proximate end of said needle.
Claim 4
Dependent Claim
47 words
A thoracentesis device as claimed in claim 1, including a vacuum source connected to said side conduit means for removal of fluid from the pleural cavity when the catheter distal end is in the pleural cavity, the needle withdrawn, and the valve means in the first position.
Claim 5
Dependent Claim
71 words
A thoracentesis device as claimed in claim 1, said elongated conduit means comprising a pair of hollow aligned arms joined by a hollow, intermediate barrel, said valve means comprising a stopcock rotatable in said intermediate barrel and formed with a pair of aligned radial ports which are aligned with said aligned arms in said second valve means position, whereby said needle can pass through said aligned arms and said aligned ports.
Claim 6
Dependent Claim
52 words
A thoracentesis device as claimed in claim 4, said side conduit means comprising a hollow arm connected to said hollow barrel and extends laterally of and is between said aligned arms, said stopcock having a third radial port which is between and disposed 90° with respect to said pair of radial ports.
Claim 7
Dependent Claim
47 words
A thoracentesis device as claimed in claim 5, said stopcock ports communicating only the side conduit lateral arm with the aligned arm between said intermediate barrel and said catheter in said first valve position, said stopcock ports communicating only said aligned arms in said second valve position.
Claim 8
Dependent Claim
39 words
A thoracentesis device as claimed in claim 5, said stopcock having a lever fixed thereto and disposed externally of said intermediate barrel for manipulation of said stopcock, said lever including indicia means indicating the positions of said stopcock ports.
Claim 9
Dependent Claim
45 words
A thoracentesis device as claimed in claim 4, said seal means including an elastomeric member in one of said hollow arms between said intermediate barrel and said negative pressure applying means, said elastomeric member being adapted to seal around said hollow needle when penetrated therethrough.
Claim 10
Dependent Claim
63 words
A thoracentesis device as claimed in claim 6, said seal means including a thickened body of material formed with an elongated plug which sealingly fits into said one of said hollow arms, said seal further including a stretchable sleeve which is adapted to be folded back over the thickened body and said one hollow arm after the plug is inserted into said arm.
Claim 11
Dependent Claim
33 words
A thoracentesis device as claimed in claim 9, said seal further including a heat sensitive shrink tubing which is placed over the sleeve portion to hold it in place on said one arm.
Claim 12
Dependent Claim
19 words
A thoracentesis device as claimed in claim 1, said catheter having side ports therein adjacent to its distal end.
References Cited (Backward Citations)
FR575559A
Cited
US3313299A
Cited
US3459188A
Cited
US3459183A
Cited
US3703899A
Cited
US3765420A
Cited
US3834372A
Cited
US3830225A
Cited
US3952729A
Cited
US4099528A
Cited
US4177814A
Cited
US4308875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |