Patent US2931919A successfully refreshed from Google Patents.
Patent US105334A successfully refreshed from Google Patents.
US3674033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drainage system for body cavities
Assignee: Individual
•
Filing: 1970-08-13
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Granted: 1972-07-04
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Expires: 1990-08-13
Abstract
Abstract The invention comprises an inner and outer tube provided on their facing surfaces with canted projections which, in ratchetlike fashion, permit movement in one direction but not the other. The outer tube may be sutured to the skin and, in the event of distention of the abdomen due to gas, the outer tube will merely slide over the inner tube; in the absence of the outer tube, such distention would serve to pull the tube out of the organ to which it extends.
Inventors
- 👤 John Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:29
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M2025/024; A61M2025/0286
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
131 words
A surgical drainage device for permitting flow of fluid between a living body cavity and a location outside the body, comprising an outer tube having a drainage bore throughout the length thereof, an inner tube removably disposed within said bore and in close fitting relationship therewith and a plurality of projections, said projections being located on one of said tubes and directed toward the other of said tubes, said projections being further of such radial extent as positively to engage means of said other of said tubes to permit relative longitudinal movement between said tubes in one direction and to resist movement in the opposition direction, whereby when said device is operative with one of said tubes extending into said body cavity said drainage from said body cavity can be accomplished.
Claim 2
Dependent Claim
131 words
A surgical drainage device for permitting flow of fluid between a living body cavity and a location outside the body, comprising an outer tube having a drainage bore throughout the length thereof, an inner tube removably disposed within said bore and in close fitting relationship therewith and a plurality of projections, said projections being located on one of said tubes and directed toward the other of said tubes, said projections being further of such radial extent as positively to engage means of said other of said tubes to permit relative longitudinal movement between said tubes in one direction and to resist movement in the opposition direction, whereby when said device is operative with one of said tubes extending into said body cavity said drainage from said body cavity can be accomplished.
Claim 3
Dependent Claim
34 words
A device according to claim 1, wherein both of said tubes are provided with such projections, the projections of one tube extending oppositely to those of the other tube and forming a ratchet-action therewith.
Claim 4
Dependent Claim
36 words
A device according to claim 2, wherein each of said projections is substantially triangular with an obtuse angle adjacent the connection with its tube and with an acute angle at the forward end of said projection.
Claim 5
Dependent Claim
15 words
A device according to claim 3, wherein each of said projections is an annular ring.
References Cited (Backward Citations)
CA666090A
Cited
FR586018A
Cited
US2366067A
Cited
US2967067A
Cited
US3122139A
Cited
US3334631A
Cited
US3492996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |