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 Title: |
US4454880:
Nasal hood with open-bottom mixing chamber
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Muto, Rudolph; Andover, MA 01810
Cotner, Ronald; Chester, NH 03036
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| Assignee: |
None
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| Published / Filed: |
1984-06-19
/ 1982-05-12
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| Application Number: |
US1982000377340
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| IPC Code: |
Advanced:
A61M 16/06;
IPC-7:
A61M 16/00;
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| ECLA Code: |
A61M16/06; A61M16/06S; K61M210/06C;
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| U.S. Class: |
Current:
128/205.25;
128/207.13;
128/207.18;
Original:
128/205.25;
128/207.13;
128/207.18;
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| Field of Search: |
128/207.13,207.18,203.18,203.22,206.24,205.25
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| Priority Number: |
| 1982-05-12 |
US1982000377340 |
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| Abstract: |
An oxygen supply, hood for administering oxygen to a patient, departs from the enclosed masks and enlarged, open face shields, of the prior art by being formed as a unitary shell with a central dome, forming an open bottom, mixing chamber extending outwardly above the level of the mouth. The incoming oxygen forms a whirlpool, or vortex, within the chamber which mixes oxygen with moist exhaled air and permits the moist oxygen to also reach the mouth. The shell is firmly affixed by a recess over the bridge of the nose, by a strap across the upper lip and by a pair of integral wings, extending along the cheek bones to a band around the head. The gas delivery tube, within the mixing chamber extends under the nostrils, and along the upper lip of the patient. The gas discharge nozzles on the tube are directed only upwardly and outwardly, away from the nose and mouth, toward the inside face of the front wall of the shell.
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| Attorney, Agent or Firm: |
Pearson & Pearson ;
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| Primary / Asst. Examiners: |
Recla, Henry J.;
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 5 claims |
We claim:
1. A nasal hood for administrating oxygen to a patient, said hood comprising:
- a shell of soft, flexible imperforate material shaped to fit over and cover the nose of a patient while leaving the patient's mouth free to eat, drink, or breath;
- said shell having a top wall, opposite side walls, a front wall, a rear opening, to accommodate the nose of the patient, and a bottom opening for exhalation of air, said front wall having a lower edge slightly inturned and said shell forming an open bottom dome adapted to project outwardly, above the level of the mouth of said patient, to form a mixing chamber;
- the side walls of said shell having integral wings, each adapted to extend along the cheek bones of said patient for fixation by a band around the back of the head of patient;
- and an oxygen supply tube, connectable to a source of oxygen, and extending along one of said wings, through said sidewall of said shell and into the mixing chamber of said dome, and positioned to be under the nostrils, and along the upper lip of the patient said tube having discharge nozzles directed only upwardly and outwardly away from the nose and mouth of the patient toward the front wall of said shell and adapted to create vortical circulation of incoming oxygen within said chamber;
- said shell including a narrow strap connected to said opposite sidewalls and extending from one side wall to the other, across said rear opening so as to extend along the upper lip of the patient for additional firm fixation of said hood;
- whereby said oxygen is mixed with moist air exhaled by said patient and some of said moist oxygen may be inhaled through the mouth of said patient.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 64 U.S. patent(s) that reference this one
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