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Publication numberUS2466108 A
Publication typeGrant
Publication dateApr 5, 1949
Filing dateOct 24, 1946
Priority dateOct 24, 1946
Publication numberUS 2466108 A, US 2466108A, US-A-2466108, US2466108 A, US2466108A
InventorsHuxley Thomas C
Original AssigneeHuxley Thomas C
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Artificial respirator
US 2466108 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

April 5, 1949. T. c. HUXLEYJJI ARTIFICIAL RESEIRATOR 2 Sheets-Sheet 1 Filed Oct. 24, 1946 R O T N E V m THOMAS C.IHUXLEY,I[[

Patented Apr. 5, 1949 sem ARTIFICIAL nEsPiRAToR ih m ii 16 calm;

--This invention relates-to -new and useful improvements in artificial respirators;--- 1 'f" T Objects and advantages ofthe invention will be set forth in part hereinafter and; in partwill-be obvious herefrcm,- or-may be learned by practice with the invention, the same being realized and attained by means of-the;instrumentalitiesand combinations'pointed out in the appended claims.

The invention consists in the; novel -par,ts, constructions, arrangements, combinations and improvements herein shown and described;

A The accompanying drawings, refenred to herein and constituting apart hereof; illustrate one em+ bodiment of the invention, and together with the description, serve to explain the principles of the invention;

Of the-drawings:

' Figure 1, is aview in-perspective of apreferred form of apparatus embodying ifeatures of the present invention in place on a patient;

, Figure 2 is a view in longitudinal section of the apparatusand patients body along thelin ehofthe nal, l mn sh in h ma ll thep siti of .the ribs, diaphragm, viscera and body wall in the'rest stage oi respiration 7, h

Figure 3 a view similar to Figure-,2 showin th apparatus under art l aquat onis ing the inspiration phase pi respiration; Q

liigure is a view of theapparatus in side elet c shown pmth pa i n lef w.

Eigure 5 is a bottom plan view of the apparatus; and pr. rain. 11w

,F r 6 sa vi wii endelevat on, view d irom h ab om nal end oi t a p ra us. show n h fitting means extended and contr acted.,.

Referring to the drawingsinjdetail and particularly to F ur a sh lli-shaned.casing.,.8, on t ted o a li htw h mat r al, sufli iently rigid to. r is "de ormat on u er mod ratesuca tion, such as jR e s -a fitsi verr es upon and, enclqses th i cnta P Sifii Q 1 .0f, thep tien s; chest, said casing {beingprovided aroundpits d e, which makes co a t wi th patie js. lacdyl. with sealing means" l0,, made 0f a sot, ;yie1;ding air impervious material such asi foam rubber which may be covered with'a ,thinjresiliently yieldable m e a uch as r ih easlise a. a. Th sealing means LB, extending beyond each ab; dominal end of the casing edge,;contact s thebody f r b wl .abu mei ts i ther h se lin ean H orm as b taat lly .a :t 1 s at en t c sing viiv estsiup thepatients b dy. osure. 3 consistin in; thei-nre ierreciiemer bodiment of the-invention of a resiliently yieldable thin rubber sheet I4 are provided, said sheet [4 beingsealed t'othe .low'er. r'abdominal edge -l6 of the ;casing B and ito'the-abutments 12,.thereto', the edge. I6 not being in contact withthe p'atients body but, being a convex arch: Slighttension in the upper part of the sheet is provided byits seal with edge; l6 but;:slight"1ooseness or slack is provided in the'lowerportion of the sheet with the result that its loosel". lower portion makes substantial contact with the patients upper abdomen. ,.i .i A member l B-,;aperture d to receive avertically extending rod member 20'; which is secured upon' a base 22 is provldedidireither side of the lower end of thecasing 8, 'saidiinember l8 beingiajpertured to receive transverselyextending. variable, posi tionset screws-1421 ,Whichimake contactiwitl'i r'od memberllll therebyjperrnitting regulation of the supporting Iength'ofirod memberuzllr l A jA$;c1evis ,26, apert'ured to receiverod member 20 fits." "over and; pivots. upon. member .18, said clevis. 26 Lcarryingiae transversely extending rod member? 28,, fixed atone endpin, the clevis, 2,6 andv being threadedlyiiteceived at otheriendiby. a

turnbucklef3llg';,.,Thus thewidth of, the casing 8 is ,connectedtoabellows oriother,suctionidevice,

not shown,so that when moderate. suctionvof three to fiVe. inches of wate'z'riscapplied to :the .chest and upperabdon en, the ,casing 28 having a subs, stantially,..air-tight-seai with thebody by virtue of. edge; seal f l 0.- a nd rubberssheet l4, at-partial Vacuum will be created inside casing 8 which will react upon the body wall, thorax,.+diaphragm, abdominal tcavityrand -.vi scera- -.of the patient as shown inFig. 2' andEig. ,3 and more "fully-des scribed rhereinaften-so as .to .simulatethe rest @to sp r tion phase ofbreathina: A return to. normal pressure insidergcasing fltsimulates the expirationto restphaseof respiration.

In the operation otthe .aboyerdevice, the casing 8, is placed gonthe ,pa'tient s ichest assshown in Fig.1 e t llypextendin mdemem ers. flnqand set,-

S beingcstmadjustedi that much of the weight v,oft z t appanatus-awill; rest upon the bed andunot upon the -:-patient,-w hile-:the width on the" casing 8 .is adjusted togthewpatients'chest size by adjustment of spacing, means-,consisting of the turnbuckle ,30-1and rodimemberslfl.w Y

.Sealing: means tlzll' and the resiliently yieldablejv ubben-sheet l-fispitoyide 'a isubstantially:ai-retight seal between casing 8 and the body of the patient and when moderate suction of three to five inches of water is applied through suction duct 32 to the casing 8 by means of a bellows or other suction pump device, a partial vacuum is produced. Fig. 2 shows a longitudinal section of the body taken along the line of the backbone with the apparatus in place but not evacuated. The thorax A is separated from the abdominal cavity B by the diaphragm C which extends convexly upward like a dome into the thorax when in the expiration phase of respiration as schematically shown in Fig. '2. Fig. 3 shows schematically what happens during inspiration as induced by the action of the apparatus. The ribs D are pulled to a position approximately at right angles to the backbone by the action of the intercostal muscles, the thorax expanding as the body wall E is displaced' upwardly 'into' expanded and the diaphragm is downwardly displaced, causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

2. In an apparatus for producing artificial respiration, the combination of a casing to fit over, rest upon and enclose the frontal portion only of the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being sufficiently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; a membe on either side of the lower end of said casing, having an aperture therein to receive a the partially evacuated casing 8. The diaphragm C flattens, displacing the liver F and the stomach G downwardly with this flattening of the -dia-. phragm being further aided by displacement of body wall E upwardly into the case 8, which expands the abdominal cavity A. Comparison of the Figs. 2 and 3 will also show the change in positioning of the rubber sheet M when the case 8 is partially evacuated. Alternation between partial evacuation and normal pressure of the air within casing 8 at the rate of approximately sixteen times per minute for an adult patient will successfully simulate normal respiration.

The lightweight apparatus shown in the preferred embodiment of the invention is so sealed to the frontal portion only of the patients torso and is so supported at its lower end that much of. its weight rests, upon the. bed so that skin irriation and discomfort to the patient is minimized when the apparatus is worn over long periods of time. The apparatus is readily adjustable to different chest sizes and permits considerable necessary motion to the patient, thus facilitating his treatment as by manipulation. The sturdy, inexpensive, lightweight construe--v tion, readily'adjustable to various chest sizes, minimizing the patients discomfort presents marked improvement over the cumbersome ex-- pensive respirators now in use and marks a con-, siderable improvement in the treatment of pa.- tients suffering from paralysis of the respiratory muscles. p V

The invention in' its broader aspects is not limited to the specific mechanisms shown and described but departures may be made therefrom within the scope of the accompanying claims without departing from the principles of the invention and without sacrificing its chief advantages.

What I claim is:

1. In an apparatus for producing artificial respiration, the combination of a casing ,to fit over; rest upon and enclose the frontal portion only of the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being sufiiciently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; means for supporting said casing at its abdominal end, relieving the patient of much'of the weight of the apparatus; means at the abdominal end of said casing to adjust its width to different chest sizes; means for sealing said casing to the chest at the sides and adjacent to the clavicles; closure means at the lower end of said casing, adapted to make substantial contact with the abdomen;

whereby the thorax and abdominal cavity are vertically extending rod member which is secured upon a base, said member having means for securing said rod member in various positions whereby said casing may be positioned so that much of its weight is carried by said rod member and bears upon the bed, rather than upon the patients body; means at the abdominal end of said casing to adjust its width to different chest sizes; means for sealing said casing to the chest at the sides and adjacent to the clavicles; closure means at the lower end of said casing, adapted to make substantial contact with the abdomen; whereby the thorax and abdominal cavity are expanded and the diaphragm is displaced, causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

3. In an apparatus for producing artificial respiration, the combination of a casing to fit over, rest upon and enclose the frontal portion only of the patients chestand upper abdomen, said casing having a suction duct fitted thereto and being suificiently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; means for supporting said casing at its abdominal end, relieving the patient of much of the weight of the apparatus; a clevis, having an aperture therein to receive a vertically extending rod member fitted over a member on either side of the lower end of said casing, said clevis carrying a transversely extending rod member, fixed at one end in said clevis, forming a portion of a turnbuckle whereby the Width of said casing may be varied to fit different chest sizes; means for sealing said casing to the chest at the sides and adjacent to the clavicles; closure means at the lower end of said casing, adapted to make substantial contact with the abdomen; whereby the thorax and abdominal cavity are expanded and the diaphragm is displaced, causinginhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

4. In an apparatus for producing artificial respiration, the combination of a casing to fit over, rest upon and enclose the frontal portion only of the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being sufiiciently rigid to resist deformation under.

moderate suction applied through said duct to the chest and upper abdomen; means for supporting said casing at its abdominal end, relieving, the patient of much of the weight of the apparatus; means at the abdominal end of said casing to adjust its width to different chest sizes; sealing means of a soft, yielding substance covered with thin sheet material to render it air im- 'pervious, said sealing means being fastened to the edge of said casing which contacts the patients body and extending beyond each abdominal end of the edge of said casing contacting the may, sate seaili'ng arrears ioim inIg a"'su'tistaifi tian air-tight seal when said c as iil'g ie psfifibijl the patiehts body; cl'o's'ure mea s at thei end of said casing, adapted to inaiie siiilostz'augi ial "centaet with the abdomen; whereby the thorax bhd abdominal cavity "are "e kpa-ndd and "the diaphragm is displaced, eausmg ma azine when said moderate suction is applied to "the che'st and upper abdomen through said duct. I

5. In an apparatus foi' producing artificial res' piratidn, the combination of a casing to fit over; rest upon and enclose the frontal portion only (if the .patients chest and upper abdomen, said asing having a suction duct fitted thereto and be '3 sufficiently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; means for sti porting said casing at its abdominal end, relieving the patient of much of the weight of the app'a ratus; means at the abdominal end of said casing to adjust its width to difierent chest sizes; means forsealing said casing to the chest at the sides and adjacent to the clavicles; a resiliently yield able, thin rubber-like sheet, sealed to the lower or abdominal edge of said casing which arches convexly away from the patients body and to block like abutments; where the ends of said seal ing means between the body and the edge of said casing extend beyond lower edges of said casing, slight tension being provided in the upper part of said sheet by its seal with the edge of the abdominal end of said casingand slight looseness or slack being provided in the lower portion of said Sheet by its seal with the edge of theahdominal end of said casing and with said block like abutmentgwhereby the loose, lower portion fnakes substantial contactwith the patients abdomen; the thorax and abdominal cavity being i'r'paiided and the diaphragm displaced, thus causing inhalation when saidmoderate suction is applied to the chest and upper abdomen through said duct. V

6. In an apparatus for producing artificial respiration, the combination of a casing to fit over, rest upon and enclose the frontal portion only of the patients chest arid upper abdomen, said casing having a suction duct fitted thereto and being su'ffic'iently rigid t6 r'sist deformation under moderate suction applied through said duct to the chest and upper abdomen; a member on either side of the lower nd of said casing, having an aperture therein to receive a vertically extending rod member which is secured upon a base, said member having means for securing said r'od member in varioiis positions whereby said casing may be positioned so that much of its weight is carried by said rod member and bears upon the bed, rather than upon the patientfs body; a cle'vis, having an aperture therein to receive a vertically extending rod member, fitted; over a; member on either side of the lower end of said casing, said clevis carrying a transversely, e'iit'ending rod member, fixed at one end in saidclvis, forminga portion of a turnbuckle whereby the width of said casing may be-var ied to fit different chest sizes; means fo'fsealingsaid casing to the chest at the sides and adjacent to the clavicles; closure means at the lower end of saidc'asing, adapted to make substantial contact with the'abdome'n; wherebythe thorax and abdominal cavity are expanded and the diaphragm is displaced, causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

7. In' an apparatus fof producingartificial a ic iin .f i fidin ti i ,;pi i at over, est upon and enclose the frontal po n bnly th Pat n che and im e abdp 1. said P harmeg sec i duc t d th; in "arid bein' g sluflicient ly rigid to resistdefoimat ti d m e ate sg iiq aiig i' t h s id d d j e that and upper bdpm i a embe on -ther side of t "e lower end of s'aid casing,

ie an a er re 12 'e ei to e e e z v ti a ly iex" ng rod member whichissecuredupon a sa d-member having means for securingsaid rod in various pos tions whereby said casing may t eesiute a so th'atmuch ofits weight is ear,-

by said rod in ber and bears upon the had, her than the patients body; a clevi's, ha Hg an aperture therein to receive a vertically extending rod member, fitted over a member on e her side oi the lower end of said casing, said tile is carrying a transversely extending rod member, hired at enema in said clevis, formin a po tioh ar turnbuckle whereby the width of i g maybe var ed to td fierent eh t sizes; sealing means of a soft, yielding substance chvered with thin sheet irratterial to render it air impervious, said sealing means being fastenedt'o d i it s e si wh n st t e a? tients ed y ahuextenemg beyond ea'ch abdoni; iiial ehddf the edge of said casing contacting th'e biidij, said sealing means forming a subst ntiauy at tight seal whensaid casing rests; upon the pa' bg yxqlq re m a a the owe nd or said casing, adapted to make substantial contact with the abdomen; whereby the thorax andab m"'1ca ye e r ede a d r m e ed au in nh on w en sa d mo' i, dtion sapfpueq to the chest and upper abdoinenthrough said duct. I

8. In an apparatus for producing artificial espi eti ,,ihe sem ie tib o a casing to fi over; res't uponl and enclose the frontal portion 0'" 1y of the patients chest and upper abdomen, g n suction ductfitted thereto p y rigid to resistideformation oderate suction applied through said uct st andupper abdomen; meansior supl said casing, said clevis carrying a transversely extiidihg' red member, hired at one end in said" cievi re ion of a' turnbuckle where bythe vn th 5f saidK'c asing' may be varied to st different chest sizes; sealing means of a soft, yielding substance covered with thin sheet material to render it'ai'r impervious, said sealing means heme fastened tothe edge of said casing which con ic'ts th'paiti'en'ts'body and xtending beyo 'i d e rsam a i, ea i m ns? f rm li'y a pse l n. sa see g. e P i lb dill cl mm'e f v i er s' d casing} adapted to n so: stanial" eohtact with the abdomen; V p the thorax "'bdorrrinal cavity' are expanded and the" d'iafp displaced, causing inhale tionwh n-said modera e' suction is -applied to the chest and upper abdomen through said duet, 9: In an apparatus for producing" artificial" respirationl the combination of a casing to fit over; rest upbhand enclose the fro tal port only of the patints' chest and up 'i r jabd said casing having a cti'oh ascen ed th re 01' and being sufficiently rigidto resist deform gamm under moderate suction applied through said duct to the chest and upper abdomen; means for supporting said casing at its abdominal end, relieving the patient of much of the weight f the apparatus; a clevis, having an aperture therein to receive a vertically extending rod member, fitting over a member on either side of the lower end of said casing, said clevis carrying a transversely extending rod member, fixed at one end in said clevis, forming a portion of a tunrbuckle whereby the width of said casing may be varied to fit difierent chest sizes; sealing means of a soft, yielding substance covered with thin sheet material to render it air impervious, said sealing means being fastened to the edge of said casing which contacts the patients body and extending beyond each abdominal end of the edge of said casing contacting the body, said sealing means forming a substantially air-tight seal when said casing rests upon the patients body; a resilient- 1y yieldable, thin rubber-like sheet, sealed to the lower or abdominal edge of said casing which arches convexly away from the patients body and to block like abutments, where the ends of said sealing means between the body and the edge of said casing extend beyond lower edges of said casing, slight tension being provided in the upper part of said sheet by its seal with the edge of the abdominal end of said casing and slight looseness or slack being provided in the lower portion of said sheet by its seal when the edge of the abdominal end of said casing and with said block like abutments, whereby the loose, lower portion makes substantial contact with the patients abdomen; the thorax and abdominal cavity being expanded and the diaphragm dis- :placed, thus causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

1Q. In an apparatus for producing artificial respiration, the combination of a casing to fit over, rest upon and enclose the frontal portion only of the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being sufiiciently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; means for supporting said casing at its abdominal end, relieving the patient of much of the weight of the apparatus; means at the abdominal end of said casing to adjust its width to difierent chest sizes;

sealing means of a soft, yielding substance covered with thin sheet material to render it air impervious, said sealing means being fastened to the edge of said casing which contacts the patients body and extending beyond each abdominal end of the edge of said casing contacting the body, said sealing means forming a substantially air-tight seal when said casing rests upon the patients body; a resiliently yieldable, thin rubber-like sheet, sealed to the lower or abdominal edge of said casing which arches convexly away from the patients body and to block like abutments, where the ends of said sealing means between the body and the edge of said casing extend beyond the lower edges of said casing, slight tension being provided in the upper part of said sheet by its seal with the edge of the abdominal end of said casing and slight looseness or slack being provided in the lower portion of said sheet by its seal with the edge of the abdominal end of said casing and with said block like abutments, whereby the loose, lower portion makes substantial contact with the patients abdomen; the thorax and abdominal 8 cavity being expanded and the diaphragm dise placed, thus causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

11. In an apparatus for producing artificial respiration, the combination of a casing to fit over, rest upon and enclose the frontal portion only of the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being sufliciently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; a member on either side of the lower end of said casing, having an aperture therein to receive a vertically extending rod member which is secured upon a base, said member having means for securing said rod member in various positions whereby said casing may be positioned so that much of its weight is carried by said rod member and bears upon the bed, rather than upon the patients body; means at the abdominal end of said casing to adjust its width to different chest sizes; means for sealing said casing to the chest at the sides and adjacent to the clavicles; a resiliently yieldable, thin rubber-like sheet, sealed to the lower or abdominal edge of said casing which arches convexly away from the patients body and to block like abutments, where the ends of said sealing means between the body and the edge of said casing extend beyond the lower edges of said casing, slight tension being provided in the upper part of said sheet by its seal with the edge of the abdominal end of said casing and slight looseness or slack being provided in the lower portion of said sheet by its seal with the edge of the abdominal end of said casing and with said block like abutments, whereby the loose, lower portion makes substantial contact with the patients abdomen; the thorax and abdominal cavity being expanded and the diaphragm displaced, thus causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

12. In an apparatus for producing artificial respiration, the combination of a casing to fit over, rest upon and enclose the frontal portion only of the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being sufiiciently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; a member on either side of the lower end of said casing, having an aperture therein to receive a vertically extending rod member which is secured upon a base, said member having means for securing said rod member in various positions whereby said casing may be positioned so that much of its weight is carried by said rod member and bears upon the bed, rather than upon the patients body; means at the abdominal end of said casing to adjust its width to difierent chest sizes; sealing means of a soft, yielding substance covered with thin sheet material to render it air impervious, said sealing means being fastened to the edge of said casing which contacts the patients body and extending beyond each abdominal end of the edge of said casing contacting the body, said sealing means forming a substantially air-tight seal when said casing rests upon the patients body; a resiliently yieldable, thin rubber-like sheet, sealed to the lower or abdominal edge of said casing which arches convexly away from the patients body and to block like abutments, where the ends of said sealing means between the body and the edge of said casing extend beyond the lower edges of said casing, slight tension being provided in the upper part of said sheet by its seal with the edge of the abdominal end of said casing and slight looseness or slack being provided in the lower portion of said sheet by its seal with the edge of the abdominal end of said casing and with said block like abutments, whereby the loose, lower portion makes substantial contact with the patients abdomen; the thorax and abdominal cavity being expanded and the diaphragm displaced, thus causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

13. In an apparatus for producing artificial respiration, the combination of a casing to fit over, rest upon and enclose the frontal portion only of the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being sufficiently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; a member on either side of the lower end of said casing, having an aperture therein to receive a vertically extending rod member which is secured upon a base, said abutment having means for securing said rod member in various positions whereby said casing may be positioned so that much of its weight is carried by said rod member and bears upon the bed, rather than upon the patients body; means at the abdominal end of said casing to adjust its width to different chest sizes; sealing means of a soft, yielding substance covered with thin sheet material to render it air impervious, said sealing means being fastened to the edge of said casing which contacts the patients body and extending beyond each abdominal end of the edge of said casing contacting the body, said sealing means forming a substantially air-tight seal when said casing rests upon the patients body; closure means at the lower end of said casing, adapted to make substantial contact with the abdomen; whereby the thorax and abdomi nal cavity are expanded and the diaphragm is displaced, causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

14. In an apparatus for producing artificial respiration, the combination of a casing to fit over, rest upon and enclose the frontal portion only of the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being sufiiciently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; a member on either side of the lower end of said casing, having an aperture therein to receive a vertically extending rod member which is secured upon a base, said member having means for securing said rod member in various positions whereby said casing may be positioned so that much of its weight is carried by said rod member and bears upon the bed, rather than upon the patients body; a clevis, having an aperture therein to receive a vertically extending rod member, fitting over a block like abutment on either side of the lower end of said casing, said clevis carrying a transversely extending rod member, fixed at one end in said clevis, forming a portion of a turnbuckle whereby the width of said casing may be varied to fit difierent chest sizes; means for sealing said casing to the chest at the sides and adjacent to the clavicles; a resiliently yieldable, thin rubber-like sheet, sealed to the lower or abdominal edge of said casing which arches convexly away from the patients body and to block like abutments, where the ends of said sealing means between the body and the edge of said casing extend beyond the lower edges of said casing, slight tension being provided in the upper part of said sheet by its seal with the edge of the abdominal end of said casing and slight looseness or slack being provided in the lower portion of said sheet by its seal with the edge of the abdominal end of said casing and with said block like abutments, whereby the loose, lower portion makes substantial contact with the patients abdomen; the thorax and abdominal cavity being expanded and the diaphragm displaced, thus causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

15. In an apparatus for producing artificial respiration, the combination of a casing to fit over the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being sufficiently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; means for supporting said casing at its abdominal end relieving the patient of much of the weight of the apparatus; closure means at the lower end of said casing, adapted to make substantial contact with the abdomen; whereby the thorax and abdominal cavity are expanded and the diaphragm is displaced, causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

16. In an apparatus for producing artificial respiration, the combination of a casing to fit over the patients chest and upper abdomen, said casing having a suction duct fitted thereto and being suificiently rigid to resist deformation under moderate suction applied through said duct to the chest and upper abdomen; means at the abdominal end of said casing to adjust its width to difierent chest sizes; means for sealing said casing to the chest at the sides and adjacent to the clavicles; closure means at the lower end of said casing, adapted to make substantial contact with the abdomen, said closure means comprising a thin rubber-like sheet sealed to and supported on the abdominal end of said casing; whereby the thorax and abdominal cavity are expanded and the diaphragm is displaced, causing inhalation when said moderate suction is applied to the chest and upper abdomen through said duct.

THOMAS C. HUXLEY, III.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,065,982 Nordin Dec. 29, 1936 2,229,728 Eddels Jan. 28, 1941 2,287,939 Kraft June 30, 1942

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2065982 *Nov 12, 1935Dec 29, 1936Stile Werner AbApparatus for producing artificial breathing or respiration
US2229728 *Jun 2, 1939Jan 28, 1941Whitfield Eddels CharlesArtificial limb and the like
US2287939 *Sep 21, 1939Jun 30, 1942Gen Tire & Rubber CoRespirator
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2629372 *Jun 23, 1950Feb 24, 1953Wallin Francis TChest respirator
US2747108 *Aug 20, 1953May 22, 1956Conitech LtdConvertible alternating to direct current power supply and battery charging means for portable electrical equipment
US2772673 *Jun 18, 1952Dec 4, 1956Conitech LtdArtificial respiration apparatus
US4982735 *Nov 18, 1988Jan 8, 1991Sumitomo Bakelite Company LimitedArtificial ventilator
US5299599 *Sep 17, 1992Apr 5, 1994Lifecare International, Inc.Valving arrangement for a negative pressure ventilator
US5573498 *Dec 7, 1994Nov 12, 1996Dranez AnstaltChest enclosures for ventilators
EP0506467A2 *Mar 27, 1992Sep 30, 1992Dranez AnstaltChest enclosures for ventilators
EP0796601A2 *Mar 27, 1992Sep 24, 1997Dranez AnstaltChest enclosures for ventilators
Classifications
U.S. Classification601/44
International ClassificationA61H31/00, A61H31/02
Cooperative ClassificationA61H31/02
European ClassificationA61H31/02