US3830238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical drainage system with pressure measuring device
Assignee: Sanofi Biosurgery Inc
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Filing: 1972-11-07
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Granted: 1974-08-20
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Expires: 1992-11-07
Abstract
Abstract A surgical drainage system includes a container for the collection of fluids drained from a cavity such as a pleural cavity and a drainage tube for placing the collection chamber in fluid communication with the cavity to be drained. A check valve is provided on the drainage tube to permit the flow of fluids from the cavity to be drained into the collection chamber but prevents the passage of fluid from the container into the drainage tube. A pressure measuring device is provided in the drainage tube which provides means for determining the pressure conditions existing within the pleural cavity.
Inventors
- 👤 L Kurtz
- 👤 R Bidwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:38
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/022; A; A61; A61M; A61M1/00; A61M1/60
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
In a device for collecting fluids drained from a body cavity comprising in combination, a collection chamber, a passageway into the collection chamber and adapted to be connected with the body cavity to be drained, valve means for permitting the flow of fluid from the body cavity into the collection chamber through the passageway, and pressure measuring means for measuring pressure variation in the body cavity, said pressure measuring means sensing the pressure variations at a location between said valve means and the body cavity.
Claim 2
Dependent Claim
85 words
In a device for collecting fluids drained from a body cavity comprising in combination, a collection chamber, a passageway into the collection chamber and adapted to be connected with the body cavity to be drained, valve means for permitting the flow of fluid from the body cavity into the collection chamber through the passageway, and pressure measuring means for measuring pressure variation in the body cavity, said pressure measuring means sensing the pressure variations at a location between said valve means and the body cavity.
Claim 3
Dependent Claim
25 words
In a device according to claim 1 wherein said pressure measuring means is disposed in the passageway between said valve means and the body cavity.
Claim 4
Dependent Claim
28 words
In a device according to claim 1 wherein said pressure measuring means includes an accordion shaped enclosed tube having the internal chamber therein in communication with said passageway.
Claim 5
Dependent Claim
38 words
In a device according to claim 3 wherein said accordion shaped enclosed tube is of a resilient material and elongates in response to increased pressure within said passageway and contracts in response to decreased pressure within said passageway.
Claim 6
Dependent Claim
102 words
In a device for collecting fluids drained from a body cavity comprising, in combination, a collection chamber, an inlet tube extending into said collection chamber, a resilient check valve mEans mounted on the inner end of said inlet tube whereby when said inlet tube is connected with a body cavity to be drained said check valve means permits the flow of fluid from the body cavity into the collection chamber and prevents reverse flow, and pressure measuring means in communication with said inlet tube between the check valve means and the body cavity for measuring the pressure variations in the body cavity.
Claim 7
Dependent Claim
102 words
In a device for collecting fluids drained from a body cavity comprising, in combination, a collection chamber, an inlet tube extending into said collection chamber, a resilient check valve mEans mounted on the inner end of said inlet tube whereby when said inlet tube is connected with a body cavity to be drained said check valve means permits the flow of fluid from the body cavity into the collection chamber and prevents reverse flow, and pressure measuring means in communication with said inlet tube between the check valve means and the body cavity for measuring the pressure variations in the body cavity.
Claim 8
Dependent Claim
18 words
In a device according to claim 5 wherein said pressure measuring means is disposed in said collection chamber.
Claim 9
Dependent Claim
29 words
In a device according to claim 5 wherein said pressure measuring means includes an accordion shaped enclosed tube having the internal chamber therein in communication with said inlet tube.
Claim 10
Dependent Claim
33 words
In a device according to claim 5 and further including a U-shaped passageway connecting said pressure measuring means with said inlet tube to prevent the passage of liquids into said pressure measuring means.
References Cited (Backward Citations)
US2936757A
Cited
US3368212A
Cited
US3463159A
Cited
US3407817A
Cited
US3417750A
Cited
US3363626A
Cited
US3511243A
Cited
US3643652A
Cited
US3718135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |