Patent US3769967A successfully refreshed from Google Patents.
US3769967A
Expired / Lapsed
US
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Pulmonary inhalation device
Assignee: Individual
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Filing: 1970-07-07
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Granted: 1973-11-06
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Expires: 1990-07-07
Abstract
Abstract A device for use in making pulmonary studies involving the breathing into the lungs of radioactive tagged gasses. A face mask is attached to the distal end of an arm which is pivotally supported by a cabinet for adjusting the position of the mask. Conduits are provided in the arm for radioactive tagged gas, reservoir air and exhaust. These conduits communicate with a bellows located in the upper part of the cabinet and constituting part of a recirculating system for the radioactive tagged gas. A valving system is located in a valving head on the end of the arm in close proximity to the mask, with the valving head being formed with a plurality of passages and a plurality of demandresponsive one-way valves interconnecting the passages. Remote control means is provided for selectively holding the valves closed and permitting them to open in a desired sequence, which may be programmed for automatic cycling. Measurement of the volume of tagged gas breathed in by the subject from the recirculating system is accomplished by measuring the expansion and contraction of the bellows, such measurement being accomplished by a rack and pinion gear operating a multiturn potentiometer. The arm is pivoted on the cabinet to permit swinging movement, and the arm is rotatable so the swinging movement may be either in a vertical or horizontal plane. Additionally, means is provided for raising and lowering the entire arm assembly. The described movements of the arm are accomplished by worm gear assemblies which also serve to lock the arm in the desired position.
Inventors
- 👤 G Jones
- 👤 J Dunn
- 👤 G Purdum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:46
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/08; A61B5/0813
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
166 words
A pulmonary inhalation device, comprising a mask adapted to fit onto the face of a subject with the interior of the mask in sealed communication with the breathing passages of said subject, a radioactive tagged gas circulating system containing radioactive gas therein and formed to supply radioactive tagged gas to the interior of said mask, and valve means operatively connected to said mask and circulating system and formed for selectively allowing radioactive tagged gas to be breathed in from said circulating system by the subject and returned to said circulating system through said mask, said radioactive tagged gas circulating system comprising measuring means for determining the quantity of gas inhaled from the circulating system by the subject, said measuring means comprising a bellows, a mount securing an end of said bellows in fixed position, a rack gear secured to the other end of said bellows for movement therewith, a pinion gear engaged with said rack gear, and a multiturn potentiometer operatively connected to said pinion gear.
Claim 2
Dependent Claim
166 words
A pulmonary inhalation device, comprising a mask adapted to fit onto the face of a subject with the interior of the mask in sealed communication with the breathing passages of said subject, a radioactive tagged gas circulating system containing radioactive gas therein and formed to supply radioactive tagged gas to the interior of said mask, and valve means operatively connected to said mask and circulating system and formed for selectively allowing radioactive tagged gas to be breathed in from said circulating system by the subject and returned to said circulating system through said mask, said radioactive tagged gas circulating system comprising measuring means for determining the quantity of gas inhaled from the circulating system by the subject, said measuring means comprising a bellows, a mount securing an end of said bellows in fixed position, a rack gear secured to the other end of said bellows for movement therewith, a pinion gear engaged with said rack gear, and a multiturn potentiometer operatively connected to said pinion gear.
Claim 3
Dependent Claim
196 words
A pulmonary inhalation device comprising a cabinet having a hollow interior, a source of radioactive tagged gas within said hollow interior, a first conduit connected to said source of radioactive tagged gas, a reservoir of non-radioactive gas within said hollow interior, a second conduit connected to said reservoir of non-radioactive gas, a third conduit adapted for connection to exhaust, a mask adapted to fit over the face of a subject with the interior of the mask in sealed communication with the breathing passages of said subject, an arm connected to said cabinet and carrying said mask at one end, and a valving means carried on said arm in communication with the interior of said mask and with said conduits and formed for selective connection of the interior of said mask to said conduits, said arm being formed with a hollow interior and said conduits pass from the interior of the cabinet through the hollow interior of said arm to said valving means, said arm also being movable relative to said cabinet and mounted with a pivotal attachment to said cabinet to swing about an axis, and swivel joints are provided in said conduits on said axis.
Claim 4
Dependent Claim
196 words
A pulmonary inhalation device comprising a cabinet having a hollow interior, a source of radioactive tagged gas within said hollow interior, a first conduit connected to said source of radioactive tagged gas, a reservoir of non-radioactive gas within said hollow interior, a second conduit connected to said reservoir of non-radioactive gas, a third conduit adapted for connection to exhaust, a mask adapted to fit over the face of a subject with the interior of the mask in sealed communication with the breathing passages of said subject, an arm connected to said cabinet and carrying said mask at one end, and a valving means carried on said arm in communication with the interior of said mask and with said conduits and formed for selective connection of the interior of said mask to said conduits, said arm being formed with a hollow interior and said conduits pass from the interior of the cabinet through the hollow interior of said arm to said valving means, said arm also being movable relative to said cabinet and mounted with a pivotal attachment to said cabinet to swing about an axis, and swivel joints are provided in said conduits on said axis.
Claim 5
Dependent Claim
43 words
A pulmonary inhalation device as described in claim 2, and wherein rotary means is provided in the connection between said cabInet and said arm for rotation of the latter to provide for selective swinging adjustment of said arm in vertical and horizontal planes.
Claim 6
Dependent Claim
40 words
A pulmonary inhalation device as described in claim 2, and wherein height adjusting means is provided in the connection between said cabinet and said arm for effecting vertical movement of said arm and said pivotal attachment relative to said cabinet.
Claim 7
Dependent Claim
78 words
A pulmonary inhalation device as described in claim 3, and wherein height adjusting means is provided in the connection between said cabinet and said arm for effecting vertical movement of said arm and said pivotal attachment relative to said cabinet, and drive means is provided in said pivotal attachment and said rotary means and said height adjusting means, said drive means being formed for selectively moving said arm to a desired position and locking said arm in place.
Claim 8
Dependent Claim
18 words
A pulmonary inhalation device as described in claim 5 and wherein said drive means comprises individual worm gears.
Claim 9
Dependent Claim
36 words
A pulmonary inhalation device as described in claim 2, and wherein said cabinet is formed with a storage recess dimensioned to accommodate said arm, and said arm is selectively movable into and out of said recess.
Claim 10
Dependent Claim
108 words
A pulmonary inhalation device as described in claim 2, and wherein said source of radioactive tagged gas includes a closed recirculating system comprising a bellows mounted in said cabinet and having opposite ends formed for relative movement toward and away from each other in accordance with decreases and increases in gaseous contents of said bellows, and a potentiometer having an operative connection to said bellows and formed for indicating said relative movement of the ends of said bellows, said reservoir of non-radioactive gas being mounted inside said bellows and being of flexible wall construction to provide a displacement variable in accordance with the quantity of gas contained therein.
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |