Patent US3001981A successfully refreshed from Google Patents.
Patent US5484401A successfully refreshed from Google Patents.
US5484401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment method for pleural effusion
Assignee: Denver Biomedicals Inc
•
Filing: 1994-05-31
•
Granted: 1996-01-16
•
Expires: 2014-05-31
Abstract
Abstract A method for treating a pleural effusion condition by establishing fluid communication with a pleural space, using a catheter attached to a valve that is normally closed but openable by the insertion of a tube in the side opposite the catheter. The catheter is implanted into the pleural space and is periodically accessed by inserting a tube into the valve on the side opposite the catheter to add or remove fluid to and from the pleural space using a negative pressure source.
Inventors
- 👤 Michael Rodriguez
- 👤 Bonnie B. Vivian
- 👤 Shirley K. Freeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:38
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/06; A61M39/0606; A61M1/00; A61M1/84; A61M2039/062; A61M2039/0633; A61M2039/0646; A61M2039/066
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
84 words
Method of producing a sclerosing effect in the pleural of a human to reduce pleural effusion, comprising inserting a catheter through the chest wall of the patient so that an end of the catheter is in the pleural space; repeatedly accessing the pleural space to repeatedly drain pleural effusion from the pleural space by inserting a tube into a valve in the catheter to open the valve and access the catheter, to produce a sclerosing effect in the pleural space to reduce pleural effusion.
Claim 2
Dependent Claim
84 words
Method of producing a sclerosing effect in the pleural of a human to reduce pleural effusion, comprising inserting a catheter through the chest wall of the patient so that an end of the catheter is in the pleural space; repeatedly accessing the pleural space to repeatedly drain pleural effusion from the pleural space by inserting a tube into a valve in the catheter to open the valve and access the catheter, to produce a sclerosing effect in the pleural space to reduce pleural effusion.
Claim 3
Dependent Claim
20 words
The method of claim 1, further comprising introducing a sclerosing agent into the pleural space through the tube and catheter.
References Cited (Backward Citations)
US4669463A
Cited
US4929235A
Cited
US5061255A
Cited
US4946449A
Cited
US4973311A
Cited
US4960412A
Cited
US4874377A
Cited
US5064416A
Cited
US4944732A
Cited
US5009636A
Cited
US5156597A
Cited
US5057084A
Cited
US5106054A
Cited
US5098405A
Cited
US5207655A
Cited
US5141499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-15 | 1999-07-17 | 2000-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-15 | 2003-07-17 | 2004-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-15 | 2007-07-17 | 2008-01-16 | $7700.00 | Window Closed / Lapsed |