US3754552A - Flexible nasal cannula - Google Patents
Flexible nasal cannula Download PDFInfo
- Publication number
- US3754552A US3754552A US00151120A US3754552DA US3754552A US 3754552 A US3754552 A US 3754552A US 00151120 A US00151120 A US 00151120A US 3754552D A US3754552D A US 3754552DA US 3754552 A US3754552 A US 3754552A
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- Prior art keywords
- cross tube
- section
- midsection
- thickness
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0666—Nasal cannulas or tubing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/06—Respiratory or anaesthetic masks
- A61M16/0666—Nasal cannulas or tubing
- A61M16/0672—Nasal cannula assemblies for oxygen therapy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/02—General characteristics of the apparatus characterised by a particular materials
- A61M2205/0216—Materials providing elastic properties, e.g. for facilitating deformation and avoid breaking
Definitions
- ABSTRACT A flexible nasal cannula adapted for the intake of therapeutic gas from either the right or left side of a patient, wherein the top and bottom wall sections of the cross tube are tapered from the ends to the mid point of the cross tube.
- This invention relates to nasal cannulas. More specifically, it relates to flexible'nasal cannulas adaptable for use from either the right or left side of a patient.
- FIG. 1' is a cross'sectional view of, the nasal cannula of thisinvention.
- FIG. 2 is a cross sectional view of the cannula of FIG. I through the lines 2-2.
- FIG. .3 is a cross sectional view of the cannula of FIG. l through the lines-3-3.
- FIG. 4- is a top view of the cannula of FIG. 1.
- FIG. 5 is a fragmented view of a-preferred embodiment of the cannula of this invention.
- this invention provides a flexible nasal-cannula adapted forv the intake of therapeutic gases from either the. right'or left side of; apatient, which corn prises. across tube in flow communication' with nostril; conduits, whereinthe top and bottom IWKIIJ-SCCIIOI'IS of the cross tube are taperedfrom both'ends'to the mid section of' the cross tube.
- FIG. I-there isdepicted' a nasal cannula lo'ofthis'invention, having a cross-tube II, nostril conducts I2 and 13 with orifices l4.and'l6.
- the flexibility of the cannula of this invention is providedv by a tapering: of the upper'section A and 'thebottom section Bofthe wallof the-cross tube 11, such that the thickness of section A and section B varies from'the end .I7-t0 the mid-'section1l8of'the cross tube 11: This isillustrated in FIG. l-at land in FIGS. 2 and 3. In FIG.
- the thickness of'the upper section A of thewall of" cross tube 1-1 is greater than that'of the lower section I ⁇ , while in FIG. 3 the thickness of wall' sections Aand B:of the cross tube are reversed, such that section B isthicker than section A.
- This variation in thickness of sections A and B through'cross tubell is shown in crosssection in FIG. I, by the-area designated as Z.
- the thickness of'side wall section-C of crosstube is not ti'i pcrcd and is a constant dimension from end [7 to the mid point I8, and also the inside diameter of-thebore thickness of wall sections A and B vary along their respective lengths from end 17 to mid section 18 bya ratio of about 3 to I for section A and about I to 3 for section B. That is section A is about 3 times as thick at end I7 as it is at mid section 18, and section B is about one-third as thick at end 17 as it is a mid section 18.
- a gas inlet tube may be in flow communication with bore 19 at either end of cross tube 11.
- the inlet gas tube 21 is shown in phantom at the left side of cannula 10 in flow connection with bore I9 of cross tube 11.
- the open end of bore I9 may be closed with a plug 22, shown in phantom in a closed and open relationship with bore 19 on the right side of cannula l0.
- Plug 22 may be attached to a strap tab 23 or may be unattached to cannula 10.
- FIG. 5 A preferred embodiment of the flexible nasal cannula of this'invention is shown in FIG. 5, whereinwthe right end'of the bore 19 of cross tube 11 of cannula 10 is sealed. It is understood that either end of bore I9 of cross tube Il may be sealed and that the right endis shown sealed in FIG. 5 for purpose of illustration and not limitation.
- Strap tabs 23 and 24 are illustrative of the type of tabs that may be incorporated into the cannula 10, and other strap tabs will become apparent to those skilled in the art. The only limitation upon'the type of strap tab that may be used is that it should not interfere with 'the flexibility of the cannula.
- FIG. 4 The flexibility of the cannula of this invention is illustrated in FIG. 4 where in the curvature of the cannula 10 in relation to a patients face is shown in phantom.
- section A being thinner than section B at the mid section of cross tube II e.g. between conduits I2 and 13, allows the conduits I2 andl3 to incline toward each other where the cannula I0 is curved'to fit a patient in the manner shown in phantom in FIG. 4.
- the conduits l2 and 13 thus adjust to fit the nasal passages of a patient.
- the nasal cannula of this invention may beprepa re 'd from polymeric material such as polyvinylchloride.”
- A'flexible nasal cannula comprising in combination a cross tube, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted at about each end of said cross tube, a plug mounted on one of said straptabs'at' oneend ofsaid-cross tube, said 'plug b'eingremovablly and sealingly inserted in said one end, an inlet tube in flow communication with said cross tube end opposite.
- said cross tube having upper, lowerv and sidewall sections, said nostril conduits extending from said upperwall section.
- said cross tube having said upper and lower sections of its walls tapered from each end to the midsection, such that the thickness of the upper section is greater at the ends than at the mid-. section and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
- a flexible nasal cannula comprising in combination a cross tube having a closed end, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted' at about each end of said cross tube, an inlet tube in flow 4 is greater at the ends than the midsection and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
Abstract
A flexible nasal cannula adapted for the intake of therapeutic gas from either the right or left side of a patient, wherein the top and bottom wall sections of the cross tube are tapered from the ends to the mid point of the cross tube.
Description
[ FLEXIBLE NASAL CANNULA [75] Inventor: William R. King, Denver, C010.
[73] Assignee: Sandal-Wander, 1nc., Hanover, NJ.
[22] .Filed: June 8, 1971 [21] Appl. No.: 151,120
[52] US. Cl. 128/206 [51] Int. Cl.- A6lm 15/08 [58] Field of Search 128/206, 207, 198,
' 128/200, 140 N, 146, 147, 145;v 273/80 B; 138/118,178, DIG. 11
[56] References Cited UNITED STATES PATENTS 2,868,199 v1/1959 Hudson) 128/206 3,083,969 4/1963 Bills, Jr. 273/80 B 2,171,023 8/1939 Buxton 138/D1G. 11
2,499,650 3/1950 Kaslow 128/206 1451 Aug. 28, 1973 Primary Examinerl(yle L. Howell Attorney-Gerald D. Sharkin, Thomas C. Doyle, Robert S. Honor, Walter F. Jewell, Thomas O. McGovern, Richard E. Vila and Frederick H. Weinfeldt 57] ABSTRACT A flexible nasal cannula adapted for the intake of therapeutic gas from either the right or left side of a patient, wherein the top and bottom wall sections of the cross tube are tapered from the ends to the mid point of the cross tube.
2 Claims, 5 Drawing Figures 214' 3 a 22 1 B 18 u SHEET 1 0F 3 PATENIED MIC 28 I815 FLEXIBLE NASAL CANNULA This invention relates to nasal cannulas. More specifically, it relates to flexible'nasal cannulas adaptable for use from either the right or left side of a patient.
Flexible nasal cannulas are known in the art. These prior art cannulas, however, are deficient in that they restrict the intake of therapeutic gas e.g. oxygen to either one side or the other of a cannula cross tube. This necessitates the placingof oxygen tanks or connections on the gas inlet side of'the cannula, or. the extending of the gas inlet tubing about the patient to make the necessary cannular connections.
It is an object of this invention to provide a flexible nasal cannula which is adaptabl'e to the intake of therapeutic gas into the cross tube of the cannula from either: the right orthe left side of the cannula with reference to its placement on the patient.
This and other objectsof this invention'will become apparent from the following detailed description and drawing wherein:
FIG. 1' isa cross'sectional view of, the nasal cannula of thisinvention.
FIG. 2 is a cross sectional view of the cannula of FIG. I through the lines 2-2.
FIG. .3 is a cross sectional view of the cannula of FIG. l through the lines-3-3.
FIG. 4-is a top view of the cannula of FIG. 1.
FIG. 5 is a fragmented view of a-preferred embodiment of the cannula of this invention.
Broadly this invention provides a flexible nasal-cannula adapted forv the intake of therapeutic gases from either the. right'or left side of; apatient, which corn prises. across tube in flow communication' with nostril; conduits, whereinthe top and bottom IWKIIJ-SCCIIOI'IS of the cross tube are taperedfrom both'ends'to the mid section of' the cross tube.
This invention willb'est be' understood from the following detailed description.
:Referring now to FIG. I-there isdepicted' a nasal cannula lo'ofthis'invention, having a cross-tube II, nostril conducts I2 and 13 with orifices l4.and'l6.
The flexibility of the cannula of this inventionis providedv by a tapering: of the upper'section A and 'thebottom section Bofthe wallof the-cross tube 11, such that the thickness of section A and section B varies from'the end .I7-t0 the mid-'section1l8of'the cross tube 11: This isillustrated in FIG. l-at land in FIGS. 2 and 3. In FIG.
2, the thickness of'the upper section A of thewall of" cross tube 1-1 is greater than that'of the lower section I}, while in FIG. 3 the thickness of wall' sections Aand B:of the cross tube are reversed, such that section B isthicker than section A. This variation in thickness of sections A and B through'cross tubell is shown in crosssection in FIG. I, by the-area designated as Z. The thickness of'side wall section-C of crosstube is not ti'i pcrcd and is a constant dimension from end [7 to the mid point I8, and also the inside diameter of-thebore thickness of wall sections A and B vary along their respective lengths from end 17 to mid section 18 bya ratio of about 3 to I for section A and about I to 3 for section B. That is section A is about 3 times as thick at end I7 as it is at mid section 18, and section B is about one-third as thick at end 17 as it is a mid section 18.
A gas inlet tube may be in flow communication with bore 19 at either end of cross tube 11. In FIG. I the inlet gas tube 21 is shown in phantom at the left side of cannula 10 in flow connection with bore I9 of cross tube 11. The open end of bore I9 may be closed with a plug 22, shown in phantom in a closed and open relationship with bore 19 on the right side of cannula l0. Plug 22 may be attached to a strap tab 23 or may be unattached to cannula 10.
A preferred embodiment of the flexible nasal cannula of this'invention is shown in FIG. 5, whereinwthe right end'of the bore 19 of cross tube 11 of cannula 10 is sealed. It is understood that either end of bore I9 of cross tube Il may be sealed and that the right endis shown sealed in FIG. 5 for purpose of illustration and not limitation.
The flexibility of the cannula of this invention is illustrated in FIG. 4 where in the curvature of the cannula 10 in relation to a patients face is shown in phantom.
The novel construction of the cannula of this inven tion, allows'for the comfortable fitting of the nostril conduits 12 and 13 into the nasal passages of a patient." Thus section A being thinner than section B at the mid section of cross tube II e.g. between conduits I2 and 13, allows the conduits I2 andl3 to incline toward each other where the cannula I0 is curved'to fit a patient in the manner shown in phantom in FIG. 4. The conduits l2 and 13 thus adjust to fit the nasal passages of a patient. x f
The nasal cannula of this invention may beprepa re 'd from polymeric material such as polyvinylchloride."
Whatis claimed is: I
l. A'flexible nasal cannula comprising in combination a cross tube, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted at about each end of said cross tube, a plug mounted on one of said straptabs'at' oneend ofsaid-cross tube, said 'plug b'eingremovablly and sealingly inserted in said one end, an inlet tube in flow communication with said cross tube end opposite.
to said plug end, said cross tube having upper, lowerv and sidewall sections, said nostril conduits extending from said upperwall section. said cross tube, having said upper and lower sections of its walls tapered from each end to the midsection, such that the thickness of the upper section is greater at the ends than at the mid-. section and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
2. A flexible nasal cannula comprising in combination a cross tube having a closed end, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted' at about each end of said cross tube, an inlet tube in flow 4 is greater at the ends than the midsection and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
Claims (2)
1. A flexible nasal cannula comprising in combination a cross tube, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted at about each end of said cross tube, a plug mounted on one of said strap tabs at one end of said cross tube, said plug being removably and sealingly inserted in said one end, an inlet tube in flow communication with said cross tube end opposite to said plug end, said cross tube having upper, lower and side wall sections, said nostril conduits extending from said upper wall section, said cross tube having said upper and lower sections of its walls tapered from each end to the midsection, such that the thickness of the upper section is greater at the ends than at the midsection and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
2. A flexible nasal cannula comprising in combination a cross tube having a closed end, a pair of generally parallel upstanding nostril conduits in flow communication with said cross tube, a strap tab mounted at about each end of said cross tube, an inlet tube in flow communication with the open end of said crosS tube, said cross tube having upper, lower and side wall sections, said nostril conduits extending from said upper wall section, said cross tube having said upper and lower sections of its walls tapered from each end to the midsection such that the thickness of said upper section is greater at the ends than the midsection and the thickness of the lower section is greater at the midsection than at the ends, and the side walls of said cross tube are of uniform thickness from end to end.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US15112071A | 1971-06-08 | 1971-06-08 |
Publications (1)
Publication Number | Publication Date |
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US3754552A true US3754552A (en) | 1973-08-28 |
Family
ID=22537401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US00151120A Expired - Lifetime US3754552A (en) | 1971-06-08 | 1971-06-08 | Flexible nasal cannula |
Country Status (6)
Country | Link |
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US (1) | US3754552A (en) |
CH (1) | CH538287A (en) |
DE (1) | DE2227193A1 (en) |
FR (1) | FR2140549A1 (en) |
IT (1) | IT956331B (en) |
SU (1) | SU449469A3 (en) |
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Also Published As
Publication number | Publication date |
---|---|
DE2227193A1 (en) | 1972-12-21 |
FR2140549A1 (en) | 1973-01-19 |
CH538287A (en) | 1973-06-30 |
IT956331B (en) | 1973-10-10 |
SU449469A3 (en) | 1974-11-05 |
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