US1693730A - Breathing apparatus particularly for administering anesthetics - Google Patents
Breathing apparatus particularly for administering anesthetics Download PDFInfo
- Publication number
- US1693730A US1693730A US123125A US12312526A US1693730A US 1693730 A US1693730 A US 1693730A US 123125 A US123125 A US 123125A US 12312526 A US12312526 A US 12312526A US 1693730 A US1693730 A US 1693730A
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- US
- United States
- Prior art keywords
- air
- breathing apparatus
- amount
- apparatus particularly
- breathing
- 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.)
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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
-
- 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
- A61M16/147—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase the respiratory gas not passing through the liquid container
Definitions
- Apparatus operating by compressed gas are known in 'whicha liquid anaestheticis sprayed or evaporated to a regulatable amount that is administered to the patient together with the working gas for inhaling.
- the physician who attends the patient knows what quantities ofthe liquid by Weight are inhaled within a certain time, but, henever knows what effect such quantities of liquid have in comparison to the amount of air inhaled at the same time; because thepatient beside the working gas (compressed air or oxygen) necessary for spraying also inhales atmospheric air to a far'greater amountthrough an opening in the breathing mask.
- the amount of atmospheric air varies, and therefore also the concentration of the inhaled vapors varies correspondingly. It therefore has occurred that a large quantity of liquid administered was less effective than a small quantity, and moreover there was the possibility that the physician had a quite erroneous conception with regard to the patients susceptibility to the anaesthetic.
- the invention overcomes these difficulties by admixing a regulatable quantity of air corresponding to the depth of breathing with the vapors of the anaesthetic, in addition to the predetermined or fixed amount of compressed gas to be sprayed.
- Compressed air or compressed oxygen is supplied by the pipe a, the end of which has a nozzle b projecting into a casing c opposite the suction nozzle f forming part of the injector f.
- a vacuum or a partial vacuum will be created within the casing 0 adapted to draw medicine or anaesthetic from a glass 6 or other vessel connected with the upper part of the casing c by the piped.
- the medicine or anaesthetic will enter the casing 0 by the v pipe d in drops, which fall into the space between the two nozzles b and f, and will.
- the compressed gas passing the nozzles b and h is a determined amount and the amount of outer air sucked in may be read off from a dial according to the position of the shut-off member 2'. From the proportionof the amount of sprayed liquid and thetotal amount of air the concentration may be calculated.
- the shut-off or throttling member i may be of any well known construction; in the drawing it is shown as a cock.
- any other suitable source may be used.
- I claim Breathing apparatus comprising a breath ing bag, a conduit for gas under pressure ing With said chamber, means for regulating the output of anaesthetic, a second conduit connected with said first mentioned conduit bypassing said injector and leading to said 5 breathing ba aninj ector in said second con duit, a charm er about said second injector,
- said last mentioned chamber having a passage communicating with the atmosphere, and a valve in said passage for regulating the I amount of air injected.
Description
Dec. 4, 1928.
H. w. c..scHR6DER BREATHING APPARATUS PARTICULARLY FOR ADMINISTERING ANESTHBTIGS Filed July 17, 1926 v HTTOIEWEKS' Patented Dec. 4, 192 8.
UNITED HANS WILHELM CHRISTIAN scHRoDER, or Lassen; GERMANY, ASSIGNOR'TO ALEX- ANDER BERNHARDDRAGER, or LUBECK, GERMANY; STANGE, EXECUTRIX or SAID DRKGER, DEcEAsED.
v ELFRIEIDE DRliGER, NICJE BREATHING APPARATUS PARTICULARLY FOR ADMINISTERING ANESTHETICS.
Application filed July 17, 1926, Serial No. 123,125, and in Germany November 16, 192-5.
Apparatus operating by compressed gas are known in 'whicha liquid anaestheticis sprayed or evaporated to a regulatable amount that is administered to the patient together with the working gas for inhaling. The physician who attends the patient, it is true, knows what quantities ofthe liquid by Weight are inhaled within a certain time, but, henever knows what effect such quantities of liquid have in comparison to the amount of air inhaled at the same time; because thepatient beside the working gas (compressed air or oxygen) necessary for spraying also inhales atmospheric air to a far'greater amountthrough an opening in the breathing mask. According to the depth 1 and frequency of breathing the amount of atmospheric air varies, and therefore also the concentration of the inhaled vapors varies correspondingly. It therefore has occurred that a large quantity of liquid administered was less effective than a small quantity, and moreover there was the possibility that the physician had a quite erroneous conception with regard to the patients susceptibility to the anaesthetic.
A clear judgment and comparison with regard to the effect of inhaled substancesc'an' only be gained if the degreeof dilution with the air of the vapors is known and can be taken into account.
The invention overcomes these difficulties by admixing a regulatable quantity of air corresponding to the depth of breathing with the vapors of the anaesthetic, in addition to the predetermined or fixed amount of compressed gas to be sprayed.
In the drawing the apparatusis shown in sectional elevation. U
Compressed air or compressed oxygen is supplied by the pipe a, the end of which has a nozzle b projecting into a casing c opposite the suction nozzle f forming part of the injector f. By the compressed air or oxygen passing from the nozzle b into the nozzle f a vacuum or a partial vacuum will be created within the casing 0 adapted to draw medicine or anaesthetic from a glass 6 or other vessel connected with the upper part of the casing c by the piped. The medicine or anaesthetic will enter the casing 0 by the v pipe d in drops, which fall into the space between the two nozzles b and f, and will.
thusbe driven into the nozzle) in a fine spray. Between the injector f and the casing 0 there is a return pipe 9 and a cock ghaving a notched plug 9 According to the position of the plug the return pipe 9 Will be more or less throt'tled, and thus a more or less artial vacuum and a more or less frequent alling down oft-he drops within the casing 0 results. For spraying the largest amount of liquids only a very small amount of comv pressed air is required, which'will be sufficient for filling the lungs on slow breathing. The deficiency of air is supplied or supplemented by atmospheric air being drawn in by the injector nozzle 7L and the shut-off or throttling member 2'. The compressed gas passing the nozzles b and h is a determined amount and the amount of outer air sucked in may be read off from a dial according to the position of the shut-off member 2'. From the proportionof the amount of sprayed liquid and thetotal amount of air the concentration may be calculated. The amount of air inhaled by the patient-can be judged by the moderate distension of the bag In, which always ought to show a moderate distention. WVhen the mask 97?; fits snugly the patient produces therein a small vacuum and sucks gas from the bag by the pipe n and the non-return valve 0. valve 0 will be closed and the exhaled air escapes into the atmosphere by the'non-return valye p.
The shut-off or throttling member i may be of any well known construction; in the drawing it is shown as a cock.
The feeding of the additional air byaid of an injector operating by compressed gas In exhaling the as f is particularly a simple solution of the task. 7
For producing a regulatable stream of-air any other suitable source may be used.
I claim Breathing apparatus comprising a breath ing bag, a conduit for gas under pressure ing With said chamber, means for regulating the output of anaesthetic, a second conduit connected with said first mentioned conduit bypassing said injector and leading to said 5 breathing ba aninj ector in said second con duit, a charm er about said second injector,
said last mentioned chamber having a passage communicating with the atmosphere, and a valve in said passage for regulating the I amount of air injected.
In testimony whereof I have signed my name to' this specification.
HANS WILHELM CHRISTIAN S CHRfiDER.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1693730X | 1925-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
US1693730A true US1693730A (en) | 1928-12-04 |
Family
ID=7739612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US123125A Expired - Lifetime US1693730A (en) | 1925-11-16 | 1926-07-17 | Breathing apparatus particularly for administering anesthetics |
Country Status (1)
Country | Link |
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US (1) | US1693730A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2547458A (en) * | 1947-06-25 | 1951-04-03 | Stephenson Corp | Resuscitator |
US2647511A (en) * | 1951-11-23 | 1953-08-04 | O E M Corp | Oxygen mask |
US4865027A (en) * | 1988-09-27 | 1989-09-12 | The University Of Michigan | Non-rebreathing collapsible chamber continuous aerosol delivery system with infusion port |
US5586551A (en) * | 1995-07-17 | 1996-12-24 | Hilliard; Kenneth R. | Oxygen mask with nebulizer |
US5755221A (en) * | 1990-09-12 | 1998-05-26 | Bisgaard; Hans | Aerosol inhaler with piston dump |
US6463928B1 (en) * | 1999-04-06 | 2002-10-15 | Michael Irwin Buisson | Pediatric prepatory and induction anesthesia device |
US20030145855A1 (en) * | 1999-08-03 | 2003-08-07 | Fuhrman Bradley P. | Device and method of reducing bias flow in oscillatory ventilators |
US20040003808A1 (en) * | 2002-06-28 | 2004-01-08 | Fuhrman Bradley P. | Therapeutic agent delivery device and method |
US20050263150A1 (en) * | 2004-06-01 | 2005-12-01 | Chathampally Yashwant G | Systems and methods for the administration of drugs and medications |
-
1926
- 1926-07-17 US US123125A patent/US1693730A/en not_active Expired - Lifetime
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2547458A (en) * | 1947-06-25 | 1951-04-03 | Stephenson Corp | Resuscitator |
US2647511A (en) * | 1951-11-23 | 1953-08-04 | O E M Corp | Oxygen mask |
US4865027A (en) * | 1988-09-27 | 1989-09-12 | The University Of Michigan | Non-rebreathing collapsible chamber continuous aerosol delivery system with infusion port |
US5755221A (en) * | 1990-09-12 | 1998-05-26 | Bisgaard; Hans | Aerosol inhaler with piston dump |
US5586551A (en) * | 1995-07-17 | 1996-12-24 | Hilliard; Kenneth R. | Oxygen mask with nebulizer |
US6463928B1 (en) * | 1999-04-06 | 2002-10-15 | Michael Irwin Buisson | Pediatric prepatory and induction anesthesia device |
US20030145855A1 (en) * | 1999-08-03 | 2003-08-07 | Fuhrman Bradley P. | Device and method of reducing bias flow in oscillatory ventilators |
US7007693B2 (en) | 1999-08-03 | 2006-03-07 | The Research Foundatilon Of State University Of New York | Device and method of reducing bias flow in oscillatory ventilators |
US20040003808A1 (en) * | 2002-06-28 | 2004-01-08 | Fuhrman Bradley P. | Therapeutic agent delivery device and method |
WO2004002390A3 (en) * | 2002-06-28 | 2004-04-29 | Univ New York State Res Found | Therapeutic agent delivery device and method |
US7367335B2 (en) | 2002-06-28 | 2008-05-06 | The Research Foundation Of State University Of New York | Therapeutic agent delivery device and method |
US20050263150A1 (en) * | 2004-06-01 | 2005-12-01 | Chathampally Yashwant G | Systems and methods for the administration of drugs and medications |
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