US3753439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
General purpose surgical drain
Assignee: Individual
•
Filing: 1971-08-24
•
Granted: 1973-08-21
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Expires: 1991-08-24
Abstract
Abstract A surgical drain for operative and post operative usage providing a core comprising a pliant drainage conduit having through wall passages throughout its lenth from its distal end to a point inset from its proximal end and a co-extensive pliant irrigation conduit open at its ends, a padding layer of soft, non-friable absorbent material surrounding said core from its distal end to a point opposite the proximal end passages of the drainage conduit, a soft rubber or like sheathing surrounding the padding layer from end-to-end and having through wall passages throughout its length from its distal end to a point opposite the proximal end passages of the drainage conduit, and a securing suture extending through the proximal ends of the padding layer and sheath and encircling the core to retain the parts assembled. Fittings are provided at the proximal ends of the respective conduits adapting them respectively for connection to a suction line and to an irrigation line and the fitting of the irrigation conduit includes a normally closed plug valve selectively opened to provide irrigation when needed.
Inventors
- 👤 A Brugarolas
- 👤 E Elias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:49
CPC Classifications
A; A61; A61M; A61M27/00; A61M1/00; A61M1/84; A61M1/85
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
217 words
A general purpose disposable surgical drain for placement in a surgical wound or body cavity during operative and post operative surgical procedures comprising a drain core including an elongated open ended drainage conduit having through wall passages therein angularly staggered throughout its length from its distal end to at least a point a predetermined distance inwardly from its proximal end and a second conduit of a length substantially equal to the length of said drainage conduit having respective openings at its distal and afferent ends, said second conduit having at least its distal end fixedly connected to the distal end of said drainage conduit and its afferent end freely related to the proximal end of said drainage conduit; a soft pliable tube sheathing said core in radial spaced relation from a point inset from the distal end of said core to a point beyond the proximal end passage of said drainage conduit, said sheathing tube having through passages therein angularly staggered throughout its length from its distal end to the proximal end passage of said drainage conduit; and adsorbent padding of nonfriable material interposed between said core and said sheathing tube and fixedly secured to said core and said sheath, said padding maintaining said sheath expanded and forming an air and fluid passage chamber surrounding said core.
Claim 2
Dependent Claim
217 words
A general purpose disposable surgical drain for placement in a surgical wound or body cavity during operative and post operative surgical procedures comprising a drain core including an elongated open ended drainage conduit having through wall passages therein angularly staggered throughout its length from its distal end to at least a point a predetermined distance inwardly from its proximal end and a second conduit of a length substantially equal to the length of said drainage conduit having respective openings at its distal and afferent ends, said second conduit having at least its distal end fixedly connected to the distal end of said drainage conduit and its afferent end freely related to the proximal end of said drainage conduit; a soft pliable tube sheathing said core in radial spaced relation from a point inset from the distal end of said core to a point beyond the proximal end passage of said drainage conduit, said sheathing tube having through passages therein angularly staggered throughout its length from its distal end to the proximal end passage of said drainage conduit; and adsorbent padding of nonfriable material interposed between said core and said sheathing tube and fixedly secured to said core and said sheath, said padding maintaining said sheath expanded and forming an air and fluid passage chamber surrounding said core.
Claim 3
Dependent Claim
41 words
The surgical drain of claim 1 wherein said padding comprises a fluffy, mesh-like material loosely enclosing said core and said sheathing tube and padding are secured to said core outwardly of the proximal end passage by a suture encircling said core.
Claim 4
Dependent Claim
127 words
The surgical drain of claim 1 wherein the proximal end of said drainage conduit includes means adapting said drainage conduit for connection to a suction line adapting the drain for use as a sump drain and wherein said padding permits air to enter the proximal end of said sheath and pass through the padding into the drainage tube through its wall passages thereby aspirating the tissue drainage from the wound or cavity and in normal usage reduces the suction force applied to the sheath and body tissues forming the walls of the wound or body cavity sufficiently to prevent collapsing of the padding and sheathing tube around the drainage conduit and entry of the body wall tissues into the drainage passages under influence of the applied suction.
Claim 5
Dependent Claim
33 words
The surgical drain of claim 1 wherein the afferent end of said second conduit is provided with means adapting said second conduit for selective use as an irrigation conduit should irrigation be required.
Claim 6
Dependent Claim
32 words
The surgical drain of claim 4 wherein said means comprises a plug member carried by a tie cord fixedly secured at one end to the second conduit wall near its proximal end.
Claim 7
Dependent Claim
33 words
The surgical drain of claim 3 wherein said means adapting said drainage conduit for connection to a suction line comprises a tubular plug fitting secured to the proximal end of said drainage conduit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |