US4523920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical suction drain
Assignee: SIL-FAB Corp
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Filing: 1983-12-05
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Granted: 1985-06-18
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Expires: 2003-12-05
Abstract
Abstract A surgical suction drain extruded from biologically inert medical grade silicone rubber includes first and second spaced flanges and a web integrally formed between and abutting the flanges defining first and second longitudinally extending and laterally directed exudate receiving channels. A longitudinally extending lumen is provided in the web that is directly connectable to a vacuum source. A plurality of transversely extending apertures are provided through the flanges each of which defines an exudate receiving passageway in communication with the central lumen, the exterior surfaces of both flanges, and with a corresponding one of the longitudinally extending and laterally directed channels. Tissue standoffs are provided on the flanges. An X-ray opaque strip is co-extruded on one of the flanges. Tabs are insert molded in the channels to provide structural strength for securing the drain to the body.
Inventors
- 👤 Ronald D. Russo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:55
CPC Classifications
A; A61; A61M; A61M27/00; A61M25/00; A61M25/0021; A61M25/0023
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
152 words
A surgical suction drain, comprising: a first longitudinally extending flange having generally parallel planar external and internal surfaces; a second spaced apart longitudinally extending flange having generally parallel planar external and internal surfaces; a longitudinally extending web integrally formed centrally between and abutting the internal surfaces of said first and second flanges defining first and second longitudinally extending and laterally directed exudate receiving channels; said longitudinally extending web having a longitudinally extending lumen directly connectable to a controlled source of negative pressure; and said first and second flanges and said longitudinally extending web having a plurality of transversely extending and longitudinally spaced apertures therethrough each of which has open ends in communication with a corresponding one of said external surfaces of said flanges and an internal opening in communication both with a corresponding one of said first and second longitudinally extending and laterally directed exudate receiving channels and with said central lumen.
Claim 2
Dependent Claim
152 words
A surgical suction drain, comprising: a first longitudinally extending flange having generally parallel planar external and internal surfaces; a second spaced apart longitudinally extending flange having generally parallel planar external and internal surfaces; a longitudinally extending web integrally formed centrally between and abutting the internal surfaces of said first and second flanges defining first and second longitudinally extending and laterally directed exudate receiving channels; said longitudinally extending web having a longitudinally extending lumen directly connectable to a controlled source of negative pressure; and said first and second flanges and said longitudinally extending web having a plurality of transversely extending and longitudinally spaced apertures therethrough each of which has open ends in communication with a corresponding one of said external surfaces of said flanges and an internal opening in communication both with a corresponding one of said first and second longitudinally extending and laterally directed exudate receiving channels and with said central lumen.
Claim 3
Dependent Claim
32 words
The invention of claim 1, further including first and second ribs integrally formed centrally on said external surfaces of respective ones of said first and second flanges to provide a tissue standoff.
Claim 4
Dependent Claim
36 words
The invention of claim 1, further including first and second ribs integrally formed laterally along the sides of each of said generally planar external surfaces of said first and second flanges to provide a tissue standoff.
Claim 5
Dependent Claim
21 words
The invention of claim 1, further including a X-ray opaque strip on one of said surfaces of one of said flanges.
Claim 6
Dependent Claim
23 words
The invention of claim 1, wherein said transversely extending apertures are spaced apart longitudinally laterally alternately to each side of said central lumen.
Claim 7
Dependent Claim
20 words
The invention of claim 1, wherein said drain is an elongated length of extruded biologically inert medical grade silicone rubber.
Claim 8
Dependent Claim
40 words
The invention of claim 6, further including first and second tabs co-extruded with said drain and selectively positioned in respective first and second exudate receiving channels to provide structural strength for suturing and to provide a seal preventing exudate leakage.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |