Patent US4828546A successfully refreshed from Google Patents.
US4828546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bulb evacuator for closed wound suction
Assignee: STERION Inc
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Filing: 1987-08-21
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Granted: 1989-05-09
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Expires: 2007-08-21
Abstract
Abstract A bulb evacuator is provided for closed wound suction having a flexible compressible container with a pair of inlets having one way valves therein and a port to a suction source with a removable cap thereon at one end of the bulb evacuator. The opposite end of the bulb evacuator is provided with an integrally formed anti-reflux valve and a latching device surrounding the anti-reflux valve. A separate collection bag can be attached to the latching device so that when the bulb evacuator is filled with fluid from a closed wound, it can be compressed to force the fluid into the attached collection chamber and simultaneously creating a suction within the bulb evacuator to promote further withdrawal of fluids from the closed wound.
Inventors
- 👤 Charles B. McNeil
- 👤 Thomas J. McEvoy
- 👤 Jeffery D. Dahlquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:34
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/64; A61M1/68; A61M1/682; A61M1/60; A61M1/63
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
A bulb evacuator for closed wound suction comprising a flexible bulb, a cap on one end of said bulb, at least one inlet passageway in said cap for connecting the interior of said bulb with a closed wound, one way valve means in said inlet passageway for permitting fluid flow into said bulb, an outlet passageway in said cap for connecting the interior of said bulb with a suction source, removable closure means for said outlet passageway, a one way valve disposed in the opposite end of said bulb for permitting fluid flow from said bulb, and means on said opposite end of said bulb for attaching a collection bag to said bulb, said last named means including a tubular outlet passageway surrounding said last named one way valve, a removable cover for said passageway and releasable locking means for retaining the removable cover over the outlet passageway to close the passageway and for retaining a collection bag on the outlet passageway when the cover is removed.
Claim 2
Dependent Claim
167 words
A bulb evacuator for closed wound suction comprising a flexible bulb, a cap on one end of said bulb, at least one inlet passageway in said cap for connecting the interior of said bulb with a closed wound, one way valve means in said inlet passageway for permitting fluid flow into said bulb, an outlet passageway in said cap for connecting the interior of said bulb with a suction source, removable closure means for said outlet passageway, a one way valve disposed in the opposite end of said bulb for permitting fluid flow from said bulb, and means on said opposite end of said bulb for attaching a collection bag to said bulb, said last named means including a tubular outlet passageway surrounding said last named one way valve, a removable cover for said passageway and releasable locking means for retaining the removable cover over the outlet passageway to close the passageway and for retaining a collection bag on the outlet passageway when the cover is removed.
Claim 3
Dependent Claim
53 words
A bulb evacuator according to claim 1 and further including a second inlet passageway in said cap, said second inlet passageway having an integral closure thereon, said closure being formed of thinner plastic material than said passageway whereby said closure may be cut off when use of said second inlet passageway is required.
Claim 4
Dependent Claim
26 words
A bulb evacuator according to claim 2 and further including a one way valve in said second inlet passageway for permitting fluid flow into said bulb.
Claim 5
Dependent Claim
50 words
A bulb evacuator according to claim 1 wherein said one way valve disposed on the opposite end of said bulb is formed integrally with said bulb and comprises a pair of lips of thin flexible plastic material with a slit therebetween extending outwardly from the opposite end of said bulb.
Claim 6
Dependent Claim
34 words
A bulb evacuator according to claim 1 wherein said cap includes a pair of circular spaced inwardly extending flanges to engage the inner and outer faces of the open one end of said bulb.
Claim 7
Dependent Claim
27 words
A bulb evacuator according to claim 1 wherein said one way valve disposed in the opposite end of said bulb is integrally formed with the flexible bulb.
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) | 1992-05-08 | 1992-11-07 | 1993-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-08 | 1996-11-07 | 1997-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-08 | 2000-11-07 | 2001-05-09 | $7700.00 | Window Closed / Lapsed |