US4449525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulmonary resuscitator
Assignee: CAREFREE TRADING Inc
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Filing: 1981-02-08
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Granted: 1984-05-22
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Expires: 2001-02-08
Abstract
Abstract A pulmonary resuscitating device designed for single time use and for use with administering cardiopulmonary resuscitation to a heart failure patient. The device includes an endotracheal tube for insertion in the patient's trachea, a mouthpiece for a rescuer, and an air passageway therebetween. Included in the air passageway is a two-way valve which allows exhaled air from a rescuer to pass to the patient's lungs while diverting the patient's exhaled air to the atmosphere. An oxygen tap is provided between the rescuer's mouthpiece and the valve to allow oxygen enriched air to be administered to the patient.
Inventors
- 👤 Daniel S. White
- 👤 Jerald L. Nave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:46
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/0048; A61M16/10; A61M16/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
530 words
A pulmonary resuscitator for use by a single rescuer administering artificial respiration to a patient while simultaneously administering an external cardiac massage to the patient including: (a) an elongate air tube means having a first end and a second end and defining an airflow passage therethrough between said ends; (b) a mouthpiece attached to said first end of said air tube means adapted to communicate with the mouth of the rescuer; (c) patient air flow means attached to said second end of said air tube means, said air flow means providing communication between the lungs of the patient and said air tube means and including securing means to hold said air flow means to said patient so as to free the hands of a rescuer; (d) bipositional valve means positioned within said air tube means intermediate said first and second ends and near said second end, said valve means including: (1) a valve body having an inner chamber therein, said chamber communicating through said air tube means with said patient air flow means; (2) a passageway interconnecting said chamber with said air tube means and said mouthpiece and defining an opening leading into said chamber; (3) an exhaust port through said valve body and communicating said chamber with ambient air surrounding said valve body; (4) a butterfly flap positioned within said valve body and including an outer surface and an inner surface; said flap being alternatively positionable between a first position, wherein said flap outer surface sealably abuts against said passageway opening and blocks air flow from said chamber to said passageway such that air exhaled from said patient is directed through said exhaust port and prevented from passing through said valve body passageway to said rescuer, and a second position, wherein said flap inner surface sealably abuts against said exhaust port such that air exhaled by said rescuer passes through said chamber of said air tube means to the lungs of said patient and is prevented from exiting said exhaust port; (5) hinge means connecting said flap to said valve body and maintaining said flap within the air flow stream passing through said valve body such that reciprocal breathing motivates said flap to rotate between said first and second positions; and (6) positional means for maintaining said flap within the air flow stream passing through said valve body such that a directional change in the air flow stream motivates said flap to rotate from one of said flap positions to the other of said flap position; and (e) a compressed oxygen tap adapted to be connected to a compressed oxygen source and communicating freely and without restriction with said air flow passage of said air tube means to provide continuous flow from said compressed oxygen source to said airflow passage; said tap being located near said valve means and said tube means being valveless between said tap and said mouthpiece so as to allow continuous filling of said tube means through said tap; said air tube means providing a reservoir for said oxygen between said mouthpiece and said tap; and said air tube means providing substantially unrestricted and free flow of said oxygen between said mouthpiece and said tap.
Claim 2
Dependent Claim
530 words
A pulmonary resuscitator for use by a single rescuer administering artificial respiration to a patient while simultaneously administering an external cardiac massage to the patient including: (a) an elongate air tube means having a first end and a second end and defining an airflow passage therethrough between said ends; (b) a mouthpiece attached to said first end of said air tube means adapted to communicate with the mouth of the rescuer; (c) patient air flow means attached to said second end of said air tube means, said air flow means providing communication between the lungs of the patient and said air tube means and including securing means to hold said air flow means to said patient so as to free the hands of a rescuer; (d) bipositional valve means positioned within said air tube means intermediate said first and second ends and near said second end, said valve means including: (1) a valve body having an inner chamber therein, said chamber communicating through said air tube means with said patient air flow means; (2) a passageway interconnecting said chamber with said air tube means and said mouthpiece and defining an opening leading into said chamber; (3) an exhaust port through said valve body and communicating said chamber with ambient air surrounding said valve body; (4) a butterfly flap positioned within said valve body and including an outer surface and an inner surface; said flap being alternatively positionable between a first position, wherein said flap outer surface sealably abuts against said passageway opening and blocks air flow from said chamber to said passageway such that air exhaled from said patient is directed through said exhaust port and prevented from passing through said valve body passageway to said rescuer, and a second position, wherein said flap inner surface sealably abuts against said exhaust port such that air exhaled by said rescuer passes through said chamber of said air tube means to the lungs of said patient and is prevented from exiting said exhaust port; (5) hinge means connecting said flap to said valve body and maintaining said flap within the air flow stream passing through said valve body such that reciprocal breathing motivates said flap to rotate between said first and second positions; and (6) positional means for maintaining said flap within the air flow stream passing through said valve body such that a directional change in the air flow stream motivates said flap to rotate from one of said flap positions to the other of said flap position; and (e) a compressed oxygen tap adapted to be connected to a compressed oxygen source and communicating freely and without restriction with said air flow passage of said air tube means to provide continuous flow from said compressed oxygen source to said airflow passage; said tap being located near said valve means and said tube means being valveless between said tap and said mouthpiece so as to allow continuous filling of said tube means through said tap; said air tube means providing a reservoir for said oxygen between said mouthpiece and said tap; and said air tube means providing substantially unrestricted and free flow of said oxygen between said mouthpiece and said tap.
Claim 3
Dependent Claim
71 words
A resuscitator as set forth in claim 1 wherein: (a) said air flow means comprises an endotracheal tube, said endotracheal tube having an inflatable cuff attached at a free end thereof; said free end adapted to be received in a trachea of said patient and past an entrance to an esophagus of said patient whereby upon inflation of said cuff said trachea is sealed from fluid flow around said endotracheal tube.
Claim 4
Dependent Claim
48 words
A resuscitator as set forth in claim 1, wherein: (a) said butterfly flap is integrally hinged to a butterfly disk, said butterfly disk including an outer margin; and (b) said butterfly flap sealingly engages said butterfly disk outer margin when said flap is in said flap first position.
Claim 5
Dependent Claim
53 words
A resuscitator as set forth in claim 3 wherein: (a) said valve body includes a first end wall portion, a second end wall portion, and surrounding side wall portions; (b) said first end wall portion contains said passageway; and (c) said butterfly disk outer margin is positioned adjacent said first end wall portion.
Claim 6
Dependent Claim
31 words
A resuscitator as set forth in claim 1 wherein: (a) said passageway includes a stop means positioned therein to prevent said flap to rotate to a position within said air tube.
Claim 7
Dependent Claim
16 words
A resuscitator as set forth in claim 1 wherein: (a) said stop means is a grid.
Claim 8
Dependent Claim
33 words
A resuscitator as set forth in claim 6 wherein: (a) said first end wall includes said opening therein, said opening communicating with said passageway; and (b) said grid is positioned in said opening.
Claim 9
Dependent Claim
36 words
A resuscitator as set forth in claim 7 wherein: (a) said exhaust port includes an exhaust tube having an end thereof extending into the chamber of said valve body and into pathway of said airflow stream.
Claim 10
Dependent Claim
25 words
A resuscitator as set forth in claim 8 wherein: (a) said exhaust tube end is beveled in a direction toward said first end wall portion.
Claim 11
Dependent Claim
24 words
A resuscitator as set forth in claim 9 wherein: (a) said positional means includes: (1) said grid, and (2) said exhaust tube beveled end.
Claim 12
Dependent Claim
387 words
An improved pulmonary resuscitator, for use in providing flow communication between a rescuer and a victim; said resuscitator having an air tube and a valve positioned intermediate ends of said tube; said valve comprising: (a) a valve body, including: (1) first and second valve body members, each valve body member having a surrounding side wall portion and an end wall portion; said valve body members being slidably interconnected and defining an inner cavity therein such that said end wall portions are located on generally opposite sides of said cavity, said valve body second member surrounding wall portion having an end edge adjacent said valve body first member end wall portion when said valve body members are interconnected; (2) a fluid flow passageway through said valve body first member end wall portion communicating with said air tube adapted to allow air to pass from the rescuer to the valve body inner cavity; (3) an aperture through the second valve body member end wall portion communicating with said air tube and adapted to allow air to flow from said valve body inner cavity to the patient; (4) an exhaust tube having an end thereof extending through said valve body member side walls to said inner cavity, said exhaust tube communicating with ambient air to allow air to flow from said inner cavity to said ambient air; said exhaust tube end beveled in a direction toward said valve body first member end wall portion; (b) a grid positioned in said passageway; (c) a butterfly disk having an outer margin and a center flap portion integrally hinged therewith positioned within said inner cavity; said outer margin being snugly held between said second body end edge and said first member end wall and said flap portion is adapted to alternately seal over said passage and said exhaust tube end; said center flap being continuously presented to said stream flow through said valve body; and (d) said center flap portion overlying said exhaust tube end such that upon exhalation of air from said rescuer, said rescuer exhaled air is adapted to pass through said valve body to said patient; said center flap overlying said passageway and abuttingly engaging said grid such that upon exhalation by said patient, said patient exhaled air is adapted to pass through said exhaust tube to said ambient air.
Claim 13
Dependent Claim
387 words
An improved pulmonary resuscitator, for use in providing flow communication between a rescuer and a victim; said resuscitator having an air tube and a valve positioned intermediate ends of said tube; said valve comprising: (a) a valve body, including: (1) first and second valve body members, each valve body member having a surrounding side wall portion and an end wall portion; said valve body members being slidably interconnected and defining an inner cavity therein such that said end wall portions are located on generally opposite sides of said cavity, said valve body second member surrounding wall portion having an end edge adjacent said valve body first member end wall portion when said valve body members are interconnected; (2) a fluid flow passageway through said valve body first member end wall portion communicating with said air tube adapted to allow air to pass from the rescuer to the valve body inner cavity; (3) an aperture through the second valve body member end wall portion communicating with said air tube and adapted to allow air to flow from said valve body inner cavity to the patient; (4) an exhaust tube having an end thereof extending through said valve body member side walls to said inner cavity, said exhaust tube communicating with ambient air to allow air to flow from said inner cavity to said ambient air; said exhaust tube end beveled in a direction toward said valve body first member end wall portion; (b) a grid positioned in said passageway; (c) a butterfly disk having an outer margin and a center flap portion integrally hinged therewith positioned within said inner cavity; said outer margin being snugly held between said second body end edge and said first member end wall and said flap portion is adapted to alternately seal over said passage and said exhaust tube end; said center flap being continuously presented to said stream flow through said valve body; and (d) said center flap portion overlying said exhaust tube end such that upon exhalation of air from said rescuer, said rescuer exhaled air is adapted to pass through said valve body to said patient; said center flap overlying said passageway and abuttingly engaging said grid such that upon exhalation by said patient, said patient exhaled air is adapted to pass through said exhaust tube to said ambient air.
Claim 14
Dependent Claim
337 words
A pulmonary resuscitator for use by a single rescuer administering artificial respiration to a patient while simultaneously administering an external cardiac massage to the patient including: (a) an elongate air tube means having a first end and a second end and defining an airflow passage therethrough between said first and second ends; (b) mouthpiece means attached to said first end of said air tube means adapted to communicate with the mouth of the rescuer; (c) a patient air flow means attached to said second end of said air tube means; said air flow means providing communication between said lungs of the patient and said air tube means; said patient air flow means including securing means for maintaining said air flow means in position relative to a patient when placed thereon; (d) a bipositional valve means positioned within said air tube means near said second end; said valve means consisting of an inlet and first and second outlets allowing flow of air from the rescuer to the patient through said first outlet and allowing exhaustion of air from the patient to air ambient atmosphere through said second outlet; (e) a compressed air tap adapted to be connected to a compressed air source and to said elongate air tube means upstream of said valve means inlet; said air tap communicating freely and without restriction with said airflow passage of said air tube means to provide continuous flow from a compressed breathable air source to said airflow passage; said tap being located between said bipositional valve means and said first end of said air tube means and near said bipositional valve means such that all flow from said air tube means and said air tap flows through said valve means inlet; said air tube means being valveless and substantially nonrestricted between said tap and said mouthpiece means such that said air tube means is adapted to have the compressed air continuously flow thereinto from said tap and provides a reservoir into which said tap continually injects air for the patient.
Claim 15
Dependent Claim
337 words
A pulmonary resuscitator for use by a single rescuer administering artificial respiration to a patient while simultaneously administering an external cardiac massage to the patient including: (a) an elongate air tube means having a first end and a second end and defining an airflow passage therethrough between said first and second ends; (b) mouthpiece means attached to said first end of said air tube means adapted to communicate with the mouth of the rescuer; (c) a patient air flow means attached to said second end of said air tube means; said air flow means providing communication between said lungs of the patient and said air tube means; said patient air flow means including securing means for maintaining said air flow means in position relative to a patient when placed thereon; (d) a bipositional valve means positioned within said air tube means near said second end; said valve means consisting of an inlet and first and second outlets allowing flow of air from the rescuer to the patient through said first outlet and allowing exhaustion of air from the patient to air ambient atmosphere through said second outlet; (e) a compressed air tap adapted to be connected to a compressed air source and to said elongate air tube means upstream of said valve means inlet; said air tap communicating freely and without restriction with said airflow passage of said air tube means to provide continuous flow from a compressed breathable air source to said airflow passage; said tap being located between said bipositional valve means and said first end of said air tube means and near said bipositional valve means such that all flow from said air tube means and said air tap flows through said valve means inlet; said air tube means being valveless and substantially nonrestricted between said tap and said mouthpiece means such that said air tube means is adapted to have the compressed air continuously flow thereinto from said tap and provides a reservoir into which said tap continually injects air for the patient.
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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) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |