US3578042A - Vaporizer for anesthetic - Google Patents
Vaporizer for anesthetic Download PDFInfo
- Publication number
- US3578042A US3578042A US786621A US78662168A US3578042A US 3578042 A US3578042 A US 3578042A US 786621 A US786621 A US 786621A US 78662168 A US78662168 A US 78662168A US 3578042 A US3578042 A US 3578042A
- Authority
- US
- United States
- Prior art keywords
- connection
- vaporizer
- filler
- filler connection
- conduit
- 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
Links
- 239000006200 vaporizer Substances 0.000 title claims abstract description 31
- 230000003444 anaesthetic effect Effects 0.000 title claims description 12
- 239000000945 filler Substances 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000008016 vaporization Effects 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 208000010513 Stupor Diseases 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 6
- 229940035674 anesthetics Drugs 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003193 general anesthetic agent Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- 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
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
- A61M16/18—Vaporising devices for anaesthetic preparations
Definitions
- ABSTRACT Narcosis apparatus comprising a vaporizer equipped with a filler assembly consisting essentially of a 5 Q AIYESTHE'HC horizontal member and a member rotatable thereon to a filling bums 3 Drawmg position and is provided with bore holes that align themselves [52] Us. (I 141/301 only when in filling position, the exterior opening of the bore [51] Int. Cl B65b l/04 holes when aligned being at the same level as the preselected [50] Field of Search 141/311, maximum liquid level the vaporizer so that the latter 285 301 will automatically be prevented from overfilling.
- This invention relates to an improved overflow construction in vaporizers for anesthetics such as that described in copend ing application Ser. No. 761 ,089 filed Sept. 20, I968.-
- the improvement of this invention is applicable particularly to Vaporizers equipped with a filler assembly communicating with the interior ofthe vaporizer at a-level below the preselected maximum liquid level and preferably at the low point in the vaporizer so that the filler assembly can also be utilized to drain the vaporizer, the assembly consisting essentially of a substantially horizontal member having a longitudinal conduit communicating with a transverse. conduit in a rotatably member adapted to be connected to a source of anesthetic for filling the vaporizer.
- the vaporizer to which the improved overflow construction of this invention is most readily adaptable is one provided with a filler assembly comprising a substantially horizontal filler connection having a longitudinal conduit'and an intersecting transverse conduit near the outer end, and a second filler connection mounted for rotation on the outer end of the horizontal filler connection, the rotatable connection having a second transverse conduit communicating with the intersecting transverse conduit to provide uninterrupted communication from a source of anesthetic, through the mouth and length of the conduits in the rotatable and horizontal connections, and into the vaporizer.
- the horizontal filler connection leads directly to the low point in the vaporizer so that thefiller assembly can also be used to drain the vaporizer.
- the overflow construction of this invention has the advantage of automatically being open only when the filler assembly is in filling position.
- the construction is such that the mouth of the overflow is at the same elevation as the preselected maximum liquid level within the vaporizer when I when the preselected maximum liquid level is exceeded, thus making impossible 'an inadvertent or careless filling of the vaporizer to above the desired maximum liquid level.
- Another feature of the present invention is the provision of conical mating bearing surfaces for sealing the juncture between the horizontal and rotatable filler connections against leakage of fluid.
- FIG. 1 is a sideview of a vaporizer provided with a filler assembly shown in section;
- FIG. 2 is a side view in cross section taken along section'line A-B of FIG. I; and
- I FIG. 3 is a side view in cross section taken along section line
- the transverse conduit 4, as shown, terminates in an annular groove 5 in the horizontal filler connection 2.
- the horizontal filler connection 2 is further provided with an annular recess 6 to accommodate, for pivotal rotation about the longitudinal axis of connection 2, a rotatable filler connection 7 having a mating bore 8 and retained on the outer end of filler connection 2 by means of a screw cap 9.
- the rotatable filler connection 7 is further provided with a sealing ring 11 to avoid leakage between members 2 and 7, and a second transverse conduit or bore 12 terminating in a spring-loaded valve assembly including a valve seat 13, washer 14,.plug 1s, sprin I6 and screw cap l7-formin a s ace 18 communicating W a filler conduit 20 and t 'rea s 21 for receiving a cylinder shown in phantom at 40 in FIG. 2 and described more fully in copending application Ser. No. 761,089.
- the filling positions of rotatable filler-connection 7 and conduit 12 are shown in phantom at 7b and 12a, respectively, and their drainage positions are shown in phantom at 7c and 12c, respectively.
- the outer end of the horizontal filler connection 2 has a shoulder 70 carrying a ring 71 having a conical profile and bearing surface 72 keyed or otherwise affixed to the connection'2 to avoid rotation.
- a radial bore 73 from conduit 3 through ring 71 to the effective upper surface of member 7 said bore 73 communicating with bore 74 in filler connection 7 only when the latter is in filling position 7b, as shown in FIG. 3.
- the bore 74 terminates'in a mouth 75 which is'open to the exterior at a level substantially the same as the preselected maximum liquid level shown at 42 in the gauge or inspection window 41.
- the vaporizer is filled by screwing a flask or other container 40 of liquid anesthetic into the threaded portion 21, rotating the flask and rotatable connection 7 as a unit to the filling position shown in FIG. 3 and with phantom lines in FIG. 2.
- the vaporizer is filled by screwing a flask or other container 40 of liquid anesthetic into the threaded portion 21, rotating the flask and rotatable connection 7 as a unit to the filling position shown in FIG. 3 and with phantom lines in FIG. 2.
- liquid will overflow through bores 73, 74 if the filling is not halted, thus automatically preventing overfilling.
- the rotatable connection 7 is rotated to another position, such as that shown in FIGS. 1 and 2, the bore 73 is sealed because of nonalignment thereof withbore'74.
- the bore 73 remains sealed, thus avoiding spillage of anesthetic.
- a vaporizer for ananesthetic comprising a vessel having a vaporizing chamber having a low point for containing and vaporizing a liquid anesthetic and an assembly of filler connections for filling said chamber with said liquid anesthetic to a preselected maximum level, said assembly comprising (A) a substantially horizontal filler connection having inner and outer ends, a first, longitudinal conduit closed at the outer end and communicating at the inner endwith the interior of the chamber at a point below said preselected maximum level, and a'transverse conduit intersecting the longitudinal conduit inwardly of the outer end; and (B) a second filler connection mounted for rotation on the outer end of the horizontal filler connection to a filling position, said second connection having a second conduit communicating at one end, when it is in filling position, with the transverse conduit andat the other end with means for receiving liquid anesthetic from a container therefor, the improvement which comprises a radial bore from the longitudinal conduit to the upper surface of the horizontal filler connection and a second bore in the
- a vaporizer as defined in claim 1 wherein an annular groove is provided in the horizontal filler connection for communication between the second and transverse conduits in all positions of the rotatable filler connection.
Abstract
Narcosis apparatus comprising a vaporizer equipped with a filler assembly consisting essentially of a horizontal member and a member rotatable thereon to a filling position and is provided with bore holes that align themselves only when in filling position, the exterior opening of the bore holes when aligned being at the same level as the preselected maximum liquid level within the vaporizer so that the latter will automatically be prevented from overfilling.
Description
United States Patent [72] inventor l-lans Georg Breiling [56] References Cited Gummy UNITED STATES PATENTS [211 PP 987 51s 3/1911 Wendling 141/301x Dec. 24, 2 9 8 h U Patented y 11,1971 3 Bos etal. 141/301X [73] Assignee Dragerwerke, Heinr. 8L Bernh. Drager nmary Examiner-Robert M. Walker Lubeck, Germany Attorney-Curtis, Moms and Safford [32] Priority Jan. 2, 1968 [33] Germany [31] P 16 16 191.4
ABSTRACT: Narcosis apparatus comprising a vaporizer equipped with a filler assembly consisting essentially of a 5 Q AIYESTHE'HC horizontal member and a member rotatable thereon to a filling bums 3 Drawmg position and is provided with bore holes that align themselves [52] Us. (I 141/301 only when in filling position, the exterior opening of the bore [51] Int. Cl B65b l/04 holes when aligned being at the same level as the preselected [50] Field of Search 141/311, maximum liquid level the vaporizer so that the latter 285 301 will automatically be prevented from overfilling.
4 c l l /6 6 /5 /4 7 3;; 6 I Mn 3 7a 72 g 7/ f 73 1 VAPORIZER FOR ANES'IIIET-IC This invention relates to an improved overflow construction in vaporizers for anesthetics such as that described in copend ing application Ser. No. 761 ,089 filed Sept. 20, I968.-
The improvement of this invention is applicable particularly to Vaporizers equipped with a filler assembly communicating with the interior ofthe vaporizer at a-level below the preselected maximum liquid level and preferably at the low point in the vaporizer so that the filler assembly can also be utilized to drain the vaporizer, the assembly consisting essentially of a substantially horizontal member having a longitudinal conduit communicating with a transverse. conduit in a rotatably member adapted to be connected to a source of anesthetic for filling the vaporizer.
Generally, the vaporizer to which the improved overflow construction of this invention is most readily adaptable is one provided with a filler assembly comprising a substantially horizontal filler connection having a longitudinal conduit'and an intersecting transverse conduit near the outer end, and a second filler connection mounted for rotation on the outer end of the horizontal filler connection, the rotatable connection having a second transverse conduit communicating with the intersecting transverse conduit to provide uninterrupted communication from a source of anesthetic, through the mouth and length of the conduits in the rotatable and horizontal connections, and into the vaporizer. In a preferred embodiment of the vaporizer to which the overflow construction is most advantageously applied, the horizontal filler connection leads directly to the low point in the vaporizer so that thefiller assembly can also be used to drain the vaporizer.
The overflow construction of this invention has the advantage of automatically being open only when the filler assembly is in filling position. The construction is such that the mouth of the overflow is at the same elevation as the preselected maximum liquid level within the vaporizer when I when the preselected maximum liquid level is exceeded, thus making impossible 'an inadvertent or careless filling of the vaporizer to above the desired maximum liquid level. Another feature of the present invention is the provision of conical mating bearing surfaces for sealing the juncture between the horizontal and rotatable filler connections against leakage of fluid.
These and other features, details of construction and advantages will become apparent from the following description and the accompanying drawing in which:
FIG. 1 is a sideview of a vaporizer provided with a filler assembly shown in section; FIG. 2 is a side view in cross section taken along section'line A-B of FIG. I; and I FIG. 3 is a side view in cross section taken along section line The transverse conduit 4, as shown, terminates in an annular groove 5 in the horizontal filler connection 2. The horizontal filler connection 2 is further provided with an annular recess 6 to accommodate, for pivotal rotation about the longitudinal axis of connection 2, a rotatable filler connection 7 having a mating bore 8 and retained on the outer end of filler connection 2 by means of a screw cap 9.
The rotatable filler connection 7 is further provided with a sealing ring 11 to avoid leakage between members 2 and 7, and a second transverse conduit or bore 12 terminating in a spring-loaded valve assembly including a valve seat 13, washer 14,.plug 1s, sprin I6 and screw cap l7-formin a s ace 18 communicating W a filler conduit 20 and t 'rea s 21 for receiving a cylinder shown in phantom at 40 in FIG. 2 and described more fully in copending application Ser. No. 761,089. The filling positions of rotatable filler-connection 7 and conduit 12 are shown in phantom at 7b and 12a, respectively, and their drainage positions are shown in phantom at 7c and 12c, respectively.
Referring now to FIG. I and to FIG. v3, the latter showing the rotatable filler connection 7 in filling position 712, the outer end of the horizontal filler connection 2 has a shoulder 70 carrying a ring 71 having a conical profile and bearing surface 72 keyed or otherwise affixed to the connection'2 to avoid rotation. There is a radial bore 73 from conduit 3 through ring 71 to the effective upper surface of member 7 said bore 73 communicating with bore 74 in filler connection 7 only when the latter is in filling position 7b, as shown in FIG. 3. The bore 74 terminates'in a mouth 75 which is'open to the exterior at a level substantially the same as the preselected maximum liquid level shown at 42 in the gauge or inspection window 41.
In operation, the vaporizer is filled by screwing a flask or other container 40 of liquid anesthetic into the threaded portion 21, rotating the flask and rotatable connection 7 as a unit to the filling position shown in FIG. 3 and with phantom lines in FIG. 2. When sufficient liquid has passed through conduit 12, annular groove 5 and conduits 4 and 3 to fill the vaporizer to the preselected maximum level 42, liquid will overflow through bores 73, 74 if the filling is not halted, thus automatically preventing overfilling. As soon as the rotatable connection 7 is rotated to another position, such as that shown in FIGS. 1 and 2, the bore 73 is sealed because of nonalignment thereof withbore'74.
When the vaporizer l is drained, e.g., by rotating the rotatable connection to the position 70 shown in FIG. 2, the bore 73 remains sealed, thus avoiding spillage of anesthetic.
, Iclaim:
I. In a vaporizer for ananesthetic comprising a vessel having a vaporizing chamber having a low point for containing and vaporizing a liquid anesthetic and an assembly of filler connections for filling said chamber with said liquid anesthetic to a preselected maximum level, said assembly comprising (A) a substantially horizontal filler connection having inner and outer ends, a first, longitudinal conduit closed at the outer end and communicating at the inner endwith the interior of the chamber at a point below said preselected maximum level, and a'transverse conduit intersecting the longitudinal conduit inwardly of the outer end; and (B) a second filler connection mounted for rotation on the outer end of the horizontal filler connection to a filling position, said second connection having a second conduit communicating at one end, when it is in filling position, with the transverse conduit andat the other end with means for receiving liquid anesthetic from a container therefor, the improvement which comprises a radial bore from the longitudinal conduit to the upper surface of the horizontal filler connection and a second bore in the rotatable connection adapted to communicate at one end with the upper end of the first bore only when the second filler connection is in filling position.
2. A vaporizer as defined in claim 1 wherein a conical bearing surface is provided at the outer end of the horizontal filler connection and the rotatable filler connection has a mating bearing surface for sealing the offiller connections against leakage.
3. A vaporizer as defined in claim 2 wherein at least one of said bearing surfaces is a ringmember having a conical profile.
4. A vaporizer as defined in claim 1 wherein-the horizontal filler connection is directly in line with the low point of the vaporizing chamber.
5. A vaporizer as defined in claim 1 wherein an annular groove is provided in the horizontal filler connection for communication between the second and transverse conduits in all positions of the rotatable filler connection.
Claims (5)
1. In a vaporizer for an anesthetic comprising a vessel having a vaporizing chamber having a low point for containing and vaporizing a liquid anesthetic and an assembly of filler connections for filling said chamber with said liquid anesthetic to a preselected maximum level, said assembly comprising (A) a substantially horizontal filler connection having inner and outer ends, a first, longitudinal conduit closed at the outer end and communicating at the inner end with the interior of the chamber at a point below said preselected maximum level, and a transverse conduit intersecting the longitudinal conduit inwardly of the outer end; and (B) a second filler connection mounted for rotation on the outer end of the horizontal filler connection to a filling position, said second connection having a second conduit communicating at one enD, when it is in filling position, with the transverse conduit and at the other end with means for receiving liquid anesthetic from a container therefor, the improvement which comprises a radial bore from the longitudinal conduit to the upper surface of the horizontal filler connection and a second bore in the rotatable connection adapted to communicate at one end with the upper end of the first bore only when the second filler connection is in filling position.
2. A vaporizer as defined in claim 1 wherein a conical bearing surface is provided at the outer end of the horizontal filler connection and the rotatable filler connection has a mating bearing surface for sealing the assembly of filler connections against leakage.
3. A vaporizer as defined in claim 2 wherein at least one of said bearing surfaces is a ring member having a conical profile.
4. A vaporizer as defined in claim 1 wherein the horizontal filler connection is directly in line with the low point of the vaporizing chamber.
5. A vaporizer as defined in claim 1 wherein an annular groove is provided in the horizontal filler connection for communication between the second and transverse conduits in all positions of the rotatable filler connection.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1968D0055002 DE1616191B1 (en) | 1967-09-20 | 1968-01-02 | Anesthetic vaporizer |
Publications (1)
Publication Number | Publication Date |
---|---|
US3578042A true US3578042A (en) | 1971-05-11 |
Family
ID=5682167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US786621A Expired - Lifetime US3578042A (en) | 1968-01-02 | 1968-12-24 | Vaporizer for anesthetic |
Country Status (1)
Country | Link |
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US (1) | US3578042A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4867212A (en) * | 1987-06-19 | 1989-09-19 | Dragerwerk Aktiengesellschaft | Safety arrangement for filling and emptying an anesthetic vaporizer |
US4879997A (en) * | 1988-04-07 | 1989-11-14 | Bickford Allan M | Anesthetic vaporizer |
US5419316A (en) * | 1991-08-21 | 1995-05-30 | Bernstein; Jerome | Anesthesia evaporators |
US5904188A (en) * | 1995-12-29 | 1999-05-18 | Instrumentarium Oy | Arrangement for preventing overfill of an anaesthetic liquid container |
US6125893A (en) * | 1991-01-24 | 2000-10-03 | Datex-Ohmeda, Inc. | Container for liquid anaesthetic agent |
US20070034284A1 (en) * | 2005-08-11 | 2007-02-15 | Drager Medical Ag & Co. Kg | filling system for an anesthetic evaporator |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US987518A (en) * | 1909-09-07 | 1911-03-21 | Frederick Wendling | Filling device. |
US2130059A (en) * | 1937-02-03 | 1938-09-13 | Tony S Bosh | Tank filling device |
-
1968
- 1968-12-24 US US786621A patent/US3578042A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US987518A (en) * | 1909-09-07 | 1911-03-21 | Frederick Wendling | Filling device. |
US2130059A (en) * | 1937-02-03 | 1938-09-13 | Tony S Bosh | Tank filling device |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4867212A (en) * | 1987-06-19 | 1989-09-19 | Dragerwerk Aktiengesellschaft | Safety arrangement for filling and emptying an anesthetic vaporizer |
US4879997A (en) * | 1988-04-07 | 1989-11-14 | Bickford Allan M | Anesthetic vaporizer |
US6125893A (en) * | 1991-01-24 | 2000-10-03 | Datex-Ohmeda, Inc. | Container for liquid anaesthetic agent |
US5419316A (en) * | 1991-08-21 | 1995-05-30 | Bernstein; Jerome | Anesthesia evaporators |
US5904188A (en) * | 1995-12-29 | 1999-05-18 | Instrumentarium Oy | Arrangement for preventing overfill of an anaesthetic liquid container |
US20070034284A1 (en) * | 2005-08-11 | 2007-02-15 | Drager Medical Ag & Co. Kg | filling system for an anesthetic evaporator |
US7389801B2 (en) * | 2005-08-11 | 2008-06-24 | Drägerwerk Medical AG & Co. KG | Filling system for an anesthetic evaporator |
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