US3530905A - Vaporizer for anesthetic - Google Patents

Vaporizer for anesthetic Download PDF

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Publication number
US3530905A
US3530905A US761089A US3530905DA US3530905A US 3530905 A US3530905 A US 3530905A US 761089 A US761089 A US 761089A US 3530905D A US3530905D A US 3530905DA US 3530905 A US3530905 A US 3530905A
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United States
Prior art keywords
anesthetic
vaporizer
filling
cylinder
connection
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
Application number
US761089A
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English (en)
Inventor
Christian Drager
Karl F Mollering
Hans Georg Breiling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Draegerwerk AG and Co KGaA
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Draegerwerk AG and Co KGaA
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Filing date
Publication date
Application filed by Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Application granted granted Critical
Publication of US3530905A publication Critical patent/US3530905A/en
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Expired - Lifetime legal-status Critical Current

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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. ventilators; 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

  • a vaporizer for an anesthetic which comprises a container for said anesthetic in which said anesthetic is vaporized, a filling and an emptying means therefor, said filling and emptying means being positioned at the lowest point of said vaporizer, said filling and emptying means being swingable around an inlet bore or channel to said vaporizer container sealingly engaging the same and removable therefrom, a cylinder coupling means provided in said swingable filling and emptying means for detachable fastening of a cylinder containing said anesthetic, and a valve means activatable by said cylinder coupling means for filling and emp tying said vaporizer container for the anesthetic.
  • a vaporizer for an anesthetic which comprises a container for said anesthetic in which said anesthetic is vaporized, a filling and emptying means therefor, said filling and emptying means being positioned at the bottom of said vaporizer and communicating with said container, a valve means positioned inside the filling and emptying means, a coupling means within said filling and emptying means for receiving a male coupling connection on a flexible conduit connected to a cylinder containing the anesthetic, said valve means being activatable by said male coupling means on the flexible conduit.
  • Vaporizers for anesthetics are known which are provided either with a top-positioned filling connection or a bottompositioned discharge valve.
  • the filling connection is provided with a screw closure which must be removed to effect filling. After use, the vaporizer is emptied by opening the discharge valve.
  • Vaporizers for anesthetics are also known in which the container has no filling connection or discharge valve. These containers are taken apart before and after use for filling and emptying, respectively.
  • the known vaporizers are so devised that they can be used in each case only for a given anesthetic or for a given group of anesthetics.
  • vaporizers give the desired concentration of anesthetic in a gaseous mixture only for the specific anesthetic or the group of anesthetics.
  • all the known apparatus have the disadvantage that the vaporizer can also be filled by mistake with different anesthetics without the operator being able to note this in any manner.
  • a vaporizer for anesthetic of the known construction intended for ether can be filled with halothane or some other anesthetic, although the vaporizer itself is not adjusted to the use of a different anesthetic. This can lead to the poisoning of the patient.
  • the object of the present invention is to avoid the disadvantages described and to provide a vaporizer for anesthetic which makes it impossible to introduce an anesthetic which is unsuitable for the particular vaporizer.
  • the invention proceeds from the basis that the anesthetics are kept on supply in cylinders. These cylinders in turn are provided with a separate connection for each anesthetic or-each group of anesthetics.
  • the invention relates to a vaporizer for an anesthetic having improved filling, emptying, and coupling means.
  • the invention resides in the fact that the filling and emptying connection (with coupling means) connected at the lowest point of the vaporizer is provided with a filling and emptying means having coupling means therein.
  • the filling and emptying means is swingable about a horizontal axis and being sealably engaged with a conduit through which the anesthetic is introduced in the container.
  • This filling and emptying means has a suitable coupling for a cylinder connection for detachable coupling of a cylinder containing the anesthetic, so that said cylinder can be brought either into a filling position or into the emptying position.
  • the swingable filling and emptying means with the particularly sized coupling means can be replaced with a similar means but which correspond to the proper coupling connection on a cylinder containing the different anesthetic.
  • Another solution is to provide the filling connection located at the lowest point of the vaporizer for the anesthetic with a flexible connecting piece for a flange connector for the detachable fastening of a cylinder containing the anesthetic so that the cylinder can be brought either into the filling position or into the emptying position.
  • the invention provides the advantages that the vaporizer for the anesthetic can be filled only from the cylinders and with the use of the cylinders of the corresponding anesthetic.
  • FIG. 1 shows a vaporizer for the anesthetic in side view with connection or coupling means thereon shown in section;
  • FIG. 2 is a side view seen in the direction of the arrow P of FIG. 1, with the connection means shown in section along the plane A-B;
  • FIG. 3 is a section through a headpiece for a storage cylinder for the anesthetic
  • FIG. 4 is a section through the upper end of an anesthetic storage cylinder provided with a tightly secured filling closure
  • FIG. 5 is a side view of a vaporizer for anesthetic in accordance with a different construction with the connection shown in section;
  • FIG. 6 shows the connection piece for connecting the cylinder containing the anesthetic for the attachment in the container of FIG. 4;
  • FIG. 7 illustrates a three-way valve connection providing for a coupling to a cylinder containing an anesthetic which is attached during filling, using and emptying cycle.
  • the horizontal filling connection 2 is so arranged that its bore 3 discharges below the bottom surface (not shown) or at the height thereof, so that the vaporizer can be emptied through the bore 3.
  • the bore 3 terminates in a vertical transverse bore 4 which exits into an annular groove 5. Furthermore, the filling connection 2 is provided with a recess 6 over which the connecting piece 7 having a corresponding bore 8 is placed or from which it is removed. The connecting piece 7 is thus supported swingably and is held by the screw cap 9 which forms the abutment of a coil spring 10 which presses against the connecting piece. The connecting piece is sealed from the connection 2 by two sealing rings 11.
  • the swingable connecting piece 7 in FIG. 1 is provided with a projection 7a which engages in a corresponding recess on the top of the filling connection 2 as a result of which the connecting piece 7 is held in the position shown. Further locking means can also be provided on the filling connection 2 in order to hold the connecting piece 7 also in other swung positions.
  • FIG. 2 Various places in which the filling connection can be positioned are illustrated in FIG. 2 by the dashed lines, showing in part the cylinder nozzle inserted in recessed screw thread 21.
  • FIG. 3 shows the neck of a cylinder for an anesthetic which is provided with a thread 23.
  • a cap 24 On this thread there is screwed a cap 24, its being sealed off in screwed-on position by means of a gasket 25.
  • the cap 24 carries a connection 26 with a thread 27 which corresponds precisely to the thread 21 in FIG. 2.
  • the connection 26 is provided with an extension 28; this extension and the connection 26 being traversed by a bore 29, from which, at the end of the extension 28 lateral boreholes 30 extend.
  • the extension 28 or connection 26 bears a packing 31.
  • the cap 24 is provided with a bore 32 extending into the inside of the cylinder and terminating in a pipe length 33.
  • the pipe 33 terminates in a nozzle 34.
  • the cylinder containing the anesthetic (not shown) can, however, after the filling also be connected with the illustrated screw cap 24 in a manner other than by a threaded connection.
  • the screw cap 24 can be forced by a false seat into the neck of the cylinder.
  • the cylinder filled with the anesthetic is placed on the market together with the cap 24 and the structural parts fastened thereto, which serve for the filling process described further below.
  • FIG. 4 Such an embodiment is shown in FIG. 4 in which the cap 24a is forced into the neck of cylinder 22.
  • the cap bears the same structural parts as in FIG. 3 and is furthermore closed by a closure cap 35 which is provided with a thread 37 which engages in the cylinder thread 36.
  • the closure cap is so developed that when it is placed on the cylinder, it seals tightly and securely the cylinder.
  • the cylinder coupling shown in FIGS. 3 and 4 is screwed by means of the thread 27 into the thread 21, the front end of the extension 28 is pressing against the closure plug 15 and is lifting it from the washer 14 illustrated in FIG. 1.
  • a liquid-tight connection is created.
  • the cylinder and the connection piece 7 are now swung in the direction indicated by the arrow P in FIG. 2 until the filling and emptying means 7 assumes the position 7b, shown in dashed line, while the cylinder assumes the position shown by dashed line 40.
  • the bore 12 assumes the position 12a shown in dashed line. Further details have not been shown in order not to clutter the drawing.
  • the anesthetic now flows through the bores 29 and 30 and the bores 12 and 3 into the anesthetic vaporizer 1, while air flows from the outside via the bore 32 and the nozzle 34 into the cylinder.
  • the nozzle 34 is in this connection so small that air will definitely flow out of said nozzle rather than allowing the liquid to emerge.
  • the vaporizer for the anesthetic l is not hermetically closed in the ready position so that the liquid may overflow. Dependable flow can furthermore be assured by proper dimensioning of the length of the extension 28 and the length of the pipe section 33.
  • the vaporizer 1 has an inspection window 41 in which the liquid level marks Maximum 42 and "Minimum" 43 are arranged.
  • the vaporizer 1 is filled up to the permissible mark.
  • the connecting piece 7 is now again swung back into the initial position shown in solid line.
  • the cylinder can now be unscrewed, the valve elements 15, 14, and 13 then closing.
  • the cylinder can remain screwed-on during the anesthesia operation.
  • the cylinder In order to empty the vaporizer for the anesthetic l, the cylinder is again screwed to the connecting piece 7 and the latter together with the cylinder now swung into the position 7c shown in dashed line in FIG. 2.
  • the bore 12 in this connection assumes the position 12c shown in dashed line. Since the valve illustrated by elements 15, 14, and I3 is open, the anesthetic from the vaporizer now flows downwardly through the bore 12 into the cylinder until the vaporizer 1 is completely empty.
  • the pipe length 33 together with the nozzle 34 of the cylinder containing the anesthetic provides assurance against the overfilling of the cylinder containing the anesthetic.
  • the filling connection 44 is directed downwardly from the bottom of the vaporizer for the anesthetic I.
  • a valve seat 45 which is passed through by a valve stem 46.
  • the latter bears at its upper end the valve cone 47.
  • the valve stem 46 is fastened to an annular piston 48 which is sealed off from the inner wall 50 of the filling connection 44 by a sealing ring 49.
  • the piston 48 and the valve seat 45 constitute the abutments for a compression spring 51 which normally holds the valve 47, 45 in its closed position.
  • a riser pipe 64 which terminates in a downwardly directed bend above the mark 42.
  • the connector 54 together with the thread 53 is screwed back up to the mark 42 so that the annular piston 48 is pressed downwardly under the pressure of the spring 51, its remaining pressed hermetically against the collar 57 of the connecting spout 56 so that the anesthetic cannot flow out downwardly.
  • the collar 57 can also be developed so that it rests in piston-like and tight fashion against the inner wall 50 of the filling connection 44 so as definitely to avoid any emergence of anesthetic.
  • the flexible connecting piece 55 can be firmly connected with the interposition of a multi-way cock 65 shown in FIG. 7 to the filling connection 44, in which case the latter is not provided with a valve 45, 47.
  • the multi-way cock 65 is so developed that in a first position it opens the connection between the flexible connecting piece 55 as illustrated in FIG. 7 and the inside of the vaporizer for the anesthetic 1, while in a second position it closes the connection and in a third position it opens the connection between the flexible connecting piece 55 and the riser pipe 64.
  • the multi-way cock In order to fill the vaporizer for the anesthetic 1, the multi-way cock is brought into the first position and the storage cylinder held at a high level until the vaporizer has been filled up to the mark 42. Thereupon the multi-way cock is brought into the second position. The anesthetic can now be utilized. For emptying, the multi-way cock is brought into the third position and the cylinder containing the anesthetic is lowered so that the anesthetic flows completely back into it.
  • the vaporizer 1 can be filled at all times only with the proper anesthetic, the cylinder of which is provided with a thread which matches the thread 61 shown in FIG. 7.
  • the vaporizer 1 can only be filled with an anesthetic, the storage cylinder of which is provided with a thread corresponding to the thread 21.
  • a vaporizer for an anesthetic comprising a container for said anesthetic in which said anesthetic is vaporized, a filling and an emptying means therefor, said filling and emptying means positioned at the lowest point of said vaporizer, said filling and emptying means being swingable around an inlet channel means to said vaporizer container sealingly engaging the same and removable therefrom, a cylinder coupling means provided in said swingable filling and emptying means for detachable fastening of a cylinder containing said anesthetic, said cylinder being swingable between a level below said lowest point and a level above that of said anesthetic in the filled vaporizer, and a valve means activatable by said cylinder coupling means for filling and emptying said vaporizer container for the anesthetic.
  • a vaporizer for an anesthetic comprising a container for said anesthetic in which said anesthetic is vaporized, a filling and an emptying means therefor, said filling and emptying means being positioned at the bottom of said vaporizer and communicating with said container, a valve means positioned inside the filling and emptying means, a coupling means within said filling and emptying means for receiving a male coupling connection on a flexible conduit connected to a cylinder containing the anesthetic, said cylinder being movable between a level below said lowest point and a level above that of said anesthetic in the filled vaporizer, said valve means being activatable by said male coupling means on the flexible conduit.
  • valve means are spring loaded.
  • valve means are spring loaded.
  • a female coupling means in said swingable filling and emptying means is adapted to receive a male coupling means of a cylinder holding an anesthetic in a tightly sealing relationship, said male coupling means having an extension with a bore and side ports therefor, said extension being activated by lifting a spring loaded, movable valve element in said valve means.
  • valve means allowing the filling and emptying of said container is seated centrally, axially, and movably within a conduit communicating with said container and is provided with an annular piston displaceable longitudinally and axially in said conduit in an open and a sealing position.
  • valve means is provided with an open conduit line seated below the upper valve seal, the upper portion of which conduit line is above the maximum height to which the container is filled.

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  • Health & Medical Sciences (AREA)
  • Anesthesiology (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Closures For Containers (AREA)
US761089A 1967-09-20 1968-09-20 Vaporizer for anesthetic Expired - Lifetime US3530905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1566592 1967-09-20

Publications (1)

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US3530905A true US3530905A (en) 1970-09-29

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US761089A Expired - Lifetime US3530905A (en) 1967-09-20 1968-09-20 Vaporizer for anesthetic

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US (1) US3530905A (enrdf_load_stackoverflow)
BE (1) BE721178A (enrdf_load_stackoverflow)
FR (1) FR1580741A (enrdf_load_stackoverflow)
GB (1) GB1238055A (enrdf_load_stackoverflow)
NL (1) NL6813259A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3523948A1 (de) * 1985-07-04 1987-01-08 Draegerwerk Ag Vorrichtung zur versorgung von narkosemittelabgabeeinrichtungen
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
US5144991A (en) * 1990-07-14 1992-09-08 Dragerwerk Aktiengesellschaft Filling arrangement for an anesthetic vaporizer
US5799711A (en) * 1995-12-29 1998-09-01 Instrumentarium Oy Arrangement in connection with an anaesthetic liquid container
FR2817757A1 (fr) * 2000-12-09 2002-06-14 Draeger Medical Ag Dispositif d'alimentation en anesthesique d'un appareil medical
US20120255647A1 (en) * 2011-04-11 2012-10-11 Pierre Dumont Bottle for dispensing a fluid product equipped with a filling valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3523948A1 (de) * 1985-07-04 1987-01-08 Draegerwerk Ag Vorrichtung zur versorgung von narkosemittelabgabeeinrichtungen
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
US5144991A (en) * 1990-07-14 1992-09-08 Dragerwerk Aktiengesellschaft Filling arrangement for an anesthetic vaporizer
US5799711A (en) * 1995-12-29 1998-09-01 Instrumentarium Oy Arrangement in connection with an anaesthetic liquid container
FR2817757A1 (fr) * 2000-12-09 2002-06-14 Draeger Medical Ag Dispositif d'alimentation en anesthesique d'un appareil medical
US20120255647A1 (en) * 2011-04-11 2012-10-11 Pierre Dumont Bottle for dispensing a fluid product equipped with a filling valve

Also Published As

Publication number Publication date
FR1580741A (enrdf_load_stackoverflow) 1969-09-05
NL6813259A (enrdf_load_stackoverflow) 1969-03-24
BE721178A (enrdf_load_stackoverflow) 1969-03-03
GB1238055A (enrdf_load_stackoverflow) 1971-07-07

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