Patent US4533353A successfully refreshed from Google Patents.
US4533353A
Expired / Lapsed
US
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Dry type discharge liquid extraction device for the thoracic chamber
Assignee: Individual
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Filing: 1982-07-19
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Granted: 1985-08-06
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Expires: 2002-07-19
Abstract
Abstract A dry type discharge liquid extraction apparatus is provided with a fluid collection chamber, a coupling for introducing a vacuum into the fluid collection chamber, and a pressure control valve for regulating the flow of air from the collection chamber to the coupling. Also provided is a one-way check valve between the fluid collection chamber and the pressure control valve and a vacuum pressure stabilizing valve which is vented to atmosphere and interposed between the pressure control valve and the coupling for selectively passing air at atmospheric pressure to stabilize the introduced vacuum.
Inventors
- 👤 Sueshiro Akiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:08
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/60; A61M1/61; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3109
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
167 words
A dry tape discharge liquid extraction apparatus for a thoracic procedure comprising: a container having a main body opened at the front side including, a suction pressure adjusting chamber formed at the upper portion thereof and provided with a nozzle for connection to a suction source, a liquid seal tube provided with a liquid seal chamber and a nozzle for connection to a human body cavity tube, and a main storage chamber in communication with a liquid seal chamber of said liquid seal tube, and a front plate secured on the front opened side of the main body, the container being provided with, a suction pressure adjusting valve means in communication with said suction pressure adjusting chamber and said main storage chamber, a high negative pressure adjusting valve means for adjusting excess pressure in the human body cavity, a valve means for releasing positive and negative pressure in said container, and a suction pressure stabilizing valve in communication with said suction pressure adjusting chamber and outside air.
Claim 2
Dependent Claim
167 words
A dry tape discharge liquid extraction apparatus for a thoracic procedure comprising: a container having a main body opened at the front side including, a suction pressure adjusting chamber formed at the upper portion thereof and provided with a nozzle for connection to a suction source, a liquid seal tube provided with a liquid seal chamber and a nozzle for connection to a human body cavity tube, and a main storage chamber in communication with a liquid seal chamber of said liquid seal tube, and a front plate secured on the front opened side of the main body, the container being provided with, a suction pressure adjusting valve means in communication with said suction pressure adjusting chamber and said main storage chamber, a high negative pressure adjusting valve means for adjusting excess pressure in the human body cavity, a valve means for releasing positive and negative pressure in said container, and a suction pressure stabilizing valve in communication with said suction pressure adjusting chamber and outside air.
Claim 3
Dependent Claim
27 words
A dry tape discharge liquid extraction apparatus as claimed in claim 1 wherein: the liquid seal tube further includes a flusher chamber and a reversal control projection.
Claim 4
Dependent Claim
65 words
A dry type discharge liquid extraction apparatus as claimed in claim 1, wherein: the high negative pressure adjusting valve comprises an outer sleeve, an inner tube slidable within said outer sleeve and having a knob engagable with staggered branches of a slit on said outer sleeve, a stem slidable within the inner tube, and a spring surrounding the stem to force the inner tube upwardly.
Claim 5
Dependent Claim
46 words
A dry type discharge liquid extraction apparatus as claimed in claim 1, wherein: the suction pressure stabilizing valve for supplying a stabilized pressure to the suction pressure adjusting valve means comprises a normally closed valve member and a spring for maintaining said valve member normally closed.
Claim 6
Dependent Claim
44 words
A dry type discharge liquid extraction apparatus as claimed in claim 1, wherein: the valve means for releasing positive and negative pressure comprises a valve body, a knob extending upwardly from said valve body, and an upper vent hole in communication with outside air.
Claim 7
Dependent Claim
124 words
A dry type discharge liquid extraction apparatus comprising: a fluid collection chamber, coupling means for introducing a vacuum into said fluid collection chamber, a pressure control valve assembly for regulating the flow of air from said collection chamber to said coupling means, and comprising a ventilation adjusting pin, a ventilation adjusting screw and a one-way ventilation valve, a one-way check valve interposed between the said fluid collection chamber and said pressure control valve operative to pass air from the said fluid collection chamber to said coupling means, while preventing reverse flow therebetween, and vacuum pressure stabilizing valve means vented to atmosphere interposed between said pressure control valve means and said coupling means for selectively passing air at atmospheric pressure to stabilize the introduced vacuum.
Claim 8
Dependent Claim
124 words
A dry type discharge liquid extraction apparatus comprising: a fluid collection chamber, coupling means for introducing a vacuum into said fluid collection chamber, a pressure control valve assembly for regulating the flow of air from said collection chamber to said coupling means, and comprising a ventilation adjusting pin, a ventilation adjusting screw and a one-way ventilation valve, a one-way check valve interposed between the said fluid collection chamber and said pressure control valve operative to pass air from the said fluid collection chamber to said coupling means, while preventing reverse flow therebetween, and vacuum pressure stabilizing valve means vented to atmosphere interposed between said pressure control valve means and said coupling means for selectively passing air at atmospheric pressure to stabilize the introduced vacuum.
Claim 9
Dependent Claim
28 words
A dry type discharge liquid extraction as claimed in claim 6, further comprising: a high negative pressure adjusting valve for adjusting high negative pressure in the body cavity.
Claim 10
Dependent Claim
32 words
A dry type discharge liquid extraction apparatus as claimed in claim 7, wherein: the high negative pressure adjusting valve comprises an adjusting screw, an air-tight washer, a spring and a closure valve.
Claim 11
Dependent Claim
65 words
A dry type discharge liquid extraction apparatus as claimed in claim 7, wherein: the high negative pressure adjusting valve comprises an outer sleeve, an inner tube slideable within said outer sleeve and having a knob engageable with staggered branches of a slit on said outer sleeve, a stem slideable within said inner tube, and a spring surrounding the stem to force the inner tube upwardly.
Claim 12
Dependent Claim
30 words
A dry type discharge liquid extraction apparatus as claimed in claim 6, further comprising: a positive/negative pressure release valve for releasing and adjusting positive/negative pressure in said fluid collection chamber.
Claim 13
Dependent Claim
42 words
A dry type discharge liquid extraction apparatus as claimed in claim 10, wherein: the positive/negative pressure release valve comprises a valve body, a knob extending upwardly from said valve body, and an upper vent hole in communication with air at atmospheric pressure.
Claim 14
Dependent Claim
33 words
A dry type discharge liquid extraction apparatus as claimed in claim 6, wherein: the vacuum pressure stabilizing valve means comprises a valve member and a spring for maintaining said valve member normally closed.
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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) | 1988-08-05 | 1989-02-04 | 1989-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-05 | 1993-02-04 | 1993-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-05 | 1997-02-04 | 1997-08-06 | $7700.00 | Window Closed / Lapsed |