US4217903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drainage devices
Assignee: Individual
•
Filing: 1978-11-30
•
Granted: 1980-08-19
•
Expires: 1998-11-30
Abstract
Abstract A drainage device, in particular a catheter, provided with an inflatable balloon adjacent one end which is designed to be inserted into a vessel which is to be drained. This insertion end comprises two branches which are interconnected at their free ends by the inflatable balloon and which are arranged, in the uninflated state of the balloon, to extend substantially parallel to the longitudinal axis of the device and to constitute substantially no increase in the width or diameter of the device. In the inflated state of the balloon, at least one of the said branches diverges from the longitudinal axis of the device to permit access to a drainage tube extending through the device.
Inventors
- 👤 Ross O. Witherow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:30
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04; A61M25/10; A61M25/1002; A61M27/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
222 words
A catheter adapted for insertion into a body cavity, said catheter having an insertion end and a drainage tube and being further provided with an inflatable balloon adjacent said insertion end and a balloon filling channel; said insertion end comprising two branches having free ends which are inter-connected by the inflatable balloon, one of said branches terminating at the end of said insertion end of the catheter and the other said branch terminating short of said end; said branches being arranged, in the uninflated state of the balloon, to extend substantially parallel to the longitudinal axis of the catheter and to constitute substantially no increase in the width or diameter of the catheter; said one branch comprising an extension of the drainage tube of the catheter and the balloon filling channel being located in one of said branches and being in communication with the interior of the balloon, said balloon being arranged to be inflated by passing fluid through said filling channel and, in the inflated state of the balloon, said other branch diverging from the longitudinal axis of the catheter, an opening leading to the drainage tube being located between said branches and one end of said opening being spaced from the balloon to permit substantially complete emptying of fluids from a body cavity into which the catheter has been inserted.
Claim 2
Dependent Claim
222 words
A catheter adapted for insertion into a body cavity, said catheter having an insertion end and a drainage tube and being further provided with an inflatable balloon adjacent said insertion end and a balloon filling channel; said insertion end comprising two branches having free ends which are inter-connected by the inflatable balloon, one of said branches terminating at the end of said insertion end of the catheter and the other said branch terminating short of said end; said branches being arranged, in the uninflated state of the balloon, to extend substantially parallel to the longitudinal axis of the catheter and to constitute substantially no increase in the width or diameter of the catheter; said one branch comprising an extension of the drainage tube of the catheter and the balloon filling channel being located in one of said branches and being in communication with the interior of the balloon, said balloon being arranged to be inflated by passing fluid through said filling channel and, in the inflated state of the balloon, said other branch diverging from the longitudinal axis of the catheter, an opening leading to the drainage tube being located between said branches and one end of said opening being spaced from the balloon to permit substantially complete emptying of fluids from a body cavity into which the catheter has been inserted.
Claim 3
Dependent Claim
38 words
A catheter as claimed in claim 1, in which said one branch is provided with a cut-out region adjacent said insertion end and in which said cut-out region is bridged by the said other branch and the balloon.
Claim 4
Dependent Claim
33 words
A catheter as claimed in claim 2, in which the said other branch comprises part of said balloon filling channel the interior of which is in communication with the interior of the balloon.
Claim 5
Dependent Claim
25 words
A catheter as claimed in claim 2, in which a portion of the outer surface of the balloon is secured to the said one branch.
References Cited (Backward Citations)
US2919697A
Cited
US3438375A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |