US3823720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical drain
Assignee: Individual
•
Filing: 1972-06-21
•
Granted: 1974-07-16
•
Expires: 1992-06-21
Abstract
Abstract A surgical drain is disclosed in the form of a drainage catheter about the inner or distal end of which a nylon net is wrapped and retained in position loosely by a plurality of ties with the net and catheter being encased in a thin rubber sheath in a loose manner so that air can flow into the sheath when the outer or proximal end of the catheter is connected to suction; an additional feature resides in an irrigation catheter extending through and along the length of the sheath for providing an irrigation discharge outwardly of the distal end of the sheath for discharging internally of the sheath for internally flushing the sheath for discharge via the suction catheter.
Inventors
- 👤 D Tribble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:30
CPC Classifications
A; A61; A61M; A61M27/00; A61M1/00; A61M1/84; A61M1/85
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
176 words
A surgical drain having distal and proximal ends comprising a thin-walled flexible tubular outer sheath having a proximal end positionable externally of a body cavity to be drained and a distal end positionable on the interior of the cavity, a suction drainage catheter having means on an outer proximal end thereof for connection to a source of suction and having an inner distal end having inflow openings positioned in the interior of said flexible tubular outer sheath adjacent the distal end of said sheath and resilient mesh-like spacer means extending along the length of said outer sheath on the interior of said outer sheath for maintaining said outer sheath and said drainage catheter in spaced relationship for providing a non-clogging air flow passage in the interior of said tubular outer sheath externally of said drainage catheter for permitting air to enter the proximal end of the outer sheath and flow inwardly externally of the drainage catheter toward the distal end of the drainage catheter to enhance drainage of the cavity and prevent clogging of the drain.
Claim 2
Dependent Claim
176 words
A surgical drain having distal and proximal ends comprising a thin-walled flexible tubular outer sheath having a proximal end positionable externally of a body cavity to be drained and a distal end positionable on the interior of the cavity, a suction drainage catheter having means on an outer proximal end thereof for connection to a source of suction and having an inner distal end having inflow openings positioned in the interior of said flexible tubular outer sheath adjacent the distal end of said sheath and resilient mesh-like spacer means extending along the length of said outer sheath on the interior of said outer sheath for maintaining said outer sheath and said drainage catheter in spaced relationship for providing a non-clogging air flow passage in the interior of said tubular outer sheath externally of said drainage catheter for permitting air to enter the proximal end of the outer sheath and flow inwardly externally of the drainage catheter toward the distal end of the drainage catheter to enhance drainage of the cavity and prevent clogging of the drain.
Claim 3
Dependent Claim
39 words
The invention of claim 1 additionally including an irrigation catheter extending through said sheath and having a discharge opening adjacent the distal end of the sheath for enabling irrigation of the cavity adjacent the distal end of the sheath.
Claim 4
Dependent Claim
28 words
The invention of claim 1 additionally including internal irrigation means communicating with the interior of the proximal end of said sheath for irrigating the interior of said sheath.
Claim 5
Dependent Claim
30 words
The invention of claim 3 wherein said mesh-like spacer means comprises an air porous net extending about the outer periphery of the drainage catheter of the interior of said sheath.
Claim 6
Dependent Claim
22 words
The invention of claim 4 wherein said internal irrigating means comprises a needle inserted in the proximal end of said outer sheath.
Claim 7
Dependent Claim
22 words
The invention of claim 1 wherein said sheath is a rubber-like member and includes a plurality of apertures adjacent its distal end.
Claim 8
Dependent Claim
39 words
The invention of claim 6 additionally including an irrigation catheter extending through said sheath and having a discharge opening adjacent the distal end of the sheath for enabling irrigation of the cavity adjacent the inner end of the sheath.
Claim 9
Dependent Claim
28 words
The invention of claim 7 additionally including internal irrigation means communicating with the interior of the proximal end of said sheath for irrigating the interior of said sheath.
Claim 10
Dependent Claim
29 words
The invention of claim 8 wherein said spacer means comprises a porous nylon net extending about the outer periphery of the drainage catheter on the interior of said sheath.
Claim 11
Dependent Claim
22 words
The invention of claim 9 wherein said internal irrigation means comprises a needle inserted in the upper end of said outer sheath.
References Cited (Backward Citations)
FR358933A
Cited
FR358937A
Cited
DE847475C
Cited
US2492384A
Cited
US2930378A
Cited
US3089492A
Cited
US3416532A
Cited
US3430631A
Cited
US3753439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |