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Publication numberUS2854982 A
Publication typeGrant
Publication dateOct 7, 1958
Filing dateJan 22, 1958
Priority dateJan 22, 1958
Publication numberUS 2854982 A, US 2854982A, US-A-2854982, US2854982 A, US2854982A
InventorsVito V Pagano
Original AssigneeVito V Pagano
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Nasopharyngeal tube
US 2854982 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Oct. 7, 1958 v. v. PAGANO 2,854,982

NAsoPHARyNGEAL TUBE 2 Sheets-Sheet 1 Filed Jan 22. 1958 QW mm. QN

INVENTOR Vito V. Pagano BY /f a@ fzf//ze ATTORNEYS Oct. 7,'1958 v. v. PAGANO 2,854,982

NASOPHARYNGEAL TUBE:

' Filed Jan. 2.2, 1958 2 Sheets-Sheet 2 Fig. 3. /a M,

ATTORN EYS United States Patent C) NASOPHARYNGEAL TUBE Vito Pagano, Jackson Heights, N. Y.

Application January 22, 1958, Serial No. 710,483 4 claims.l (cl. 1zs-34s) The present invention relates to a novel and improved nasopharyngeal tube for the treatment of the esophagus.

Objects and advantages ofthe invention will be set vthe invention, and together with the description, serve to explain the principles of the invention.

Of the drawings:

Figure l is a side elevation of a typical and preferred embodiment of the present invention;

Figure 2 is a schematic, longitudinal sectional view of the device shown in Figure l and in which the width of the parts has been proportionately exaggerated for a `clearer showing of the details of construction;

Figures, 4, 5,-6, 7 and 8 are cross sectional views taken on the lines 3--3 to 8 8 of Figure 1;

Figure 9 is a'fragmentary longitudinal sectional view of an end of certain of the tubes and showing a valve member in its open position; and

Figure l is a similar view showing the valve member in its closed position.

The present invention has for its object the provision of a novel and improved surgical device for the treatment of the esophagus and which may be held in position to seal the esophagus at its lower end while allowing tluid to be removed from or fed into the stomach, while blood or other tluids may be separately removed from the. esophagus or fluid medication may be supplied thereto. A further object is the provision of a single elongated multi-tube device which may be safely anchored and left in position one end being made fast by engagement with the cardiac orifice while the other end may be adjustably made fast and properly centered by an inflatable balloon which engages with the exterior of one or the other of the nasal openings through which the tube has been introduced through the esophagus and into the stomach, while allowing separate and selective communication with the stomach and the esophagus and with separate inatable members which may be inilated, one within the stomach and another in the esophagus but both at the cardiac oritice, and a third inatable member at the exterior of the nasal opening.

Referring now in detail to the present preferred and illustrative embodiment of the invention as shown in detail in the accompanying drawings, the surgical device of the present invention comprises a relatively long, narrow tubular member 10 formed of soft, non-deleterious, ilexible, liquid and gas tight material which may be subjected to thorough cleansing and sterilization, such as vulcanized gum rubber. Along its length, the principal tubular t ad ,A 2,854,982 Patented oct. 7, s

member is provided with other tubular members, some having a common wall with the principal tube and being formed into an exteriorly smooth surface throughout at least a portion of their common length, while in other parts, an extensible resilient, inflatable member is provided communicating with a tubular member at the outer end of each of which is provided an easily operated valve by which the inflatable member may be sealed olf and allowed to remain in its inflated condition. At their outer end the several tubular members are separated from each other so they may be easily manipulated and inflated or deflated, while another inllatable member is provided and may be adjustably moved along the outer end of the tubular member at a part where all of the tubes are joined to form a single elongated member.

The lower end 12 of the tube 10 comprising the stomach section is preferably about l/a inch in its outside diameter and has a smoothly rounded closed end 14. In this stomach section 12 the tube 10 is formed with a plurality of lateral holes 16, and these communicate with the main tubular passageway of the tube 18 and with the open ended tube 20, through which feeding fluids or medication may be supplied directly to the stomach, or through which stomach fluids may be removed.

At the upper end of the stomach section 12 is provided a small thin-walled, inflatable balloon 24, also formed of rubber and vulcanized to the tube 10, not in communication therewith, but separately communicating with an elongated tubular passageway 26 which terminates in a separate tube 28 provided at its outer end with a valve member 30.

Immediately above the gastric balloon 24, spaced very slightly therefrom and separately sealed to the tube 10 and to the tube 26 so as to have no communication therewith is a separate, slightly elongated, thin-walled inflatable esophageal'balloon 34 which has communication only with a thin parallel elongated tube 36 which, like tube 26, branches into a separate tube 38 at the upper end of the device where it is formed with a valve 40.

In the inflated condition of the balloon 24 within the stomach and the balloon 34 in the lower end of the esophagus they are adapted to press towards each other with the cardiac opening of the stomach gripped between them, thereby effectively closing off the esophagus and the stomach from each other.

Above the esophageal balloon 34, and extending throughout the remainder of the upper portion of the tubular member is a fine tubular member 44 which is provided with a plurality of lateral holes 46 and which is joined to the separated tubular member 48 at that portion of the device to lie outside of the patient's body, the outer end of tube 48 preferably left open and unvalved.

Adjacent the upper end of the common multi-tubular part 10 is a small toroidal balloon 52 which is formed as a thin-walled inflatable rubber balloon, the central opening corresponding to the exterior size of the tube 10 so that as the balloon 52 is inllated, the central portion of the balloon tightly grips the exterior of the tube 10 to hold the balloon in a given position of longitudinal adjustment. `Extending upwardly from the nasal centering balloon 52 is a small rubber tube 54, detached from the tube 10, through which air may be supplied to or released from the balloon 52 under control of the valve member 56.

The several valve members 30, 40 and 56 are all preferably of the form shown in Figures 9 and 10 yand may be substantially in accordance with the corresponding part of the patent to Stubbs No. 2,769,442 granted November 6, 1956, As shown, the end of the tube 28, 38 or 54 is provided with a slightly restricted portion 60 in the form of a depressed ring and is branched, one portion leading to a closed end 62 and the other to an open end 64, a thin wall 66 separating the closed and open ends. A small ball 68 of hard, durable material such closed position of Figure 10, merely by squeezing the tube 38 at one side of the ball or at the other side, thereby eiectively sealing the tube or allowing air to escape therefrom.

As shown in Figures 3, 4 and 5, the multi-tubular member is an exteriorly smooth, integral member, cellular in cross-section, and provided with four longitudinally extending, distinct tubular passages having a common wall member which is sufficiently thin to permit the tube 10 to remain flexible, but which prevents leakage of air or liquid from one passage to another.

In Figure..4, there is additionally shown the interior and exterior, thin, expansible walls of the nasal centering balloon 52.

Figure 6 shows the tubular members 18 and 26 as they appear within the esophageal balloon, while Figure 7 shows the stomach section 12 as it passes through the gastric balloon 24, and Figure 8 shows the stomach section 12 of the tube 10 below the gastric balloon 24.

In use, the balloons 24, 34 and 52 are deated and thel valves 30, 40 and 56 are in their open position. Suitably `sterilized and lubricated, the rounded end 14 of the tube 10 is pushed downwardly through one of the nasal openings nto and through the esophagus and through the cardiac orifice until the gastric balloon 24 is fully within the stomach. Then, air is supplied through passage 26 to inflate the balloon 24, after which valve 30 is closed and the tube is withdrawn until the gastric balloon presses against the upper opening of the stomach.

In this position, the esophageal balloon 34 is inated and its valve 40 is closed.

Thereafter, the tube 10 is subjected to slight tension, and the uninated nasal balloon 52 is pushed downwardly on the tube 10 until it engages the nostrilwith a slight pressure. In this position the balloon is inated and sealed oif by closing valves 56.

`In this condition of the device, the stomach section 12 is free within the stomach and fluids can be added or removed through the free lend of tube 20. Likewise, liquid may be removed from the esophagus through suction applied to the free end of tube 48, or Huid may be supplied to the esophagus through that free end of the tube, during all of Iwhich time the esophagus and stomach are isolated from cach' other and may be separately treated.

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 sacriiicing its chief advantages.

What is claimed is:

l. A nasopha-ryngeal tube including in combination an elongated narrow tubular member having a plurality of noncommunicating passages throughout a major portion of its length and including an apertured member forming one end of the tube, adapted to extend into the stomach and communicating with an outlet at the other and outer end of the tube, a thin walled expandable balloon member attached to said tube and communicating with one of said passages to extend to a valved member whereby the balloon may be inflated and deflated within the stomach, a second thin-walled expandable balloon member adjacent the first balloon member attached to said tube and communicating with another of said passageways to extend to Ia valved member, a fourth one of the tubular passages being apertured adjacent the second balloon member and a third balloon member spaced from the second and communicating with a tubular member having an external valved end through which it may be inated or deiated.

2. A nasopharyngeal tube as claimed in claim 1 in which all of the valved members are adjacent the external end of the tube and are selectively operable.

3. A nasopharyngeal tube as claimed in claim 1 in which the first and second balloon members are adjacent each other to engage the cardiac orifice when the balloons are inated.

References Cited in the tile of this patent UNITED STATES PATENTS 2,687,131 Raiche Aug. 24, 1954 2,693,191 Raiche Nov. 2, 1954 2,799,273 Oddo Ju1y 16, 1957

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2687131 *Sep 17, 1952Aug 24, 1954Davol Rubber CoFemale incontinence catheter
US2693191 *Jul 16, 1951Nov 2, 1954Davol Rubber CoIncontinence urinal balloon plug
US2799273 *Mar 22, 1955Jul 16, 1957Vincent J OddoHaemostatic catheter
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3046988 *Dec 1, 1958Jul 31, 1962Davol Rubber CoEsophageal nasogastric tube
US3050066 *Dec 31, 1958Aug 21, 1962Wilbur R KoehnRetention catheters
US3055371 *Dec 23, 1958Sep 25, 1962Kulick GeorgeDevice for regulation and control of esophago-gastric balloons
US3087492 *Dec 29, 1960Apr 30, 1963May L ChesterValved catheters
US3173418 *Jan 10, 1961Mar 16, 1965Baran Ostap EDouble-wall endotracheal cuff
US3275001 *May 22, 1962Sep 27, 1966Kendall & CoSelf-inflatable catheter
US3394705 *Oct 22, 1965Jul 30, 1968Daniel J. AbramsonDrainage balloon catheter having means for antiseptic treatment of the urethra
US3401695 *Sep 13, 1965Sep 17, 1968Rosenberg DavidDisposable syringe package
US3437088 *Dec 1, 1966Apr 8, 1969Bielinski Leonard JApparatus for measuring motility of body organs
US3482576 *May 9, 1966Dec 9, 1969Kendall & CoEasy deflatable retention catheter
US3593713 *Jul 12, 1968Jul 20, 1971Stanley A BogoffCatheter combination
US3822702 *Jun 25, 1973Jul 9, 1974Population Res IncDispensing method and apparatus
US3841319 *Jun 22, 1972Oct 15, 1974Lambert EMethod for sealing the oesophagus and providing artificial respiration
US3848602 *Apr 19, 1972Nov 19, 1974Gutnick MortonAbortion facilitating device and process
US3871374 *Sep 6, 1973Mar 18, 1975Population Res IncDispensing instrument
US3915173 *Jul 8, 1974Oct 28, 1975Ansur IncIntubation device for the inhalation of gasses
US3972331 *Jan 24, 1975Aug 3, 1976Population Research IncorporatedDispensing catheter
US4057065 *Jun 21, 1976Nov 8, 1977Dow Corning CorporationPercutaneous gastrointestinal tube
US4090518 *Aug 12, 1976May 23, 1978Elam James OEsophago-pharyngeal airway
US4126134 *Jan 24, 1975Nov 21, 1978Population Research IncorporatedDispensing instrument
US4198981 *Mar 27, 1978Apr 22, 1980Manfred SinnreichIntrauterine surgical device
US4581012 *Dec 5, 1984Apr 8, 1986I-Flow CorporationMultilumen catheter set
US4648384 *Nov 21, 1984Mar 10, 1987Schmukler Robert ERetrograde coronary sinus perfusion device and method
US4676228 *Oct 25, 1985Jun 30, 1987Krasner Jerome LMedical apparatus having inflatable cuffs and a middle expandable section
US4676778 *Oct 27, 1986Jun 30, 1987Nelson Jr Richard LFor nasogastric insertion into the small intestine
US4690131 *May 12, 1986Sep 1, 1987The United States Of America As Represented By The Department Of Health And Human ServicesMedical apparatus
US4752286 *Dec 16, 1985Jun 21, 1988Sherwood Medical CompanyBalloon tube for treating esophagus varix
US4753640 *Oct 6, 1986Jun 28, 1988Catheter Technology CorporationCatheters and methods
US4802479 *Oct 31, 1986Feb 7, 1989C. R. Bard, Inc.Hand-held instrument for implanting, dispensing, and inflating an inflatable membrane
US4867742 *Aug 7, 1987Sep 19, 1989Reynaldo CalderonMethod for treating a tumor
US4878495 *May 15, 1987Nov 7, 1989Joseph GrayzelValvuloplasty device with satellite expansion means
US4883459 *Dec 21, 1987Nov 28, 1989Reynaldo CalderonRetrograde perfusion
US4976261 *Apr 3, 1989Dec 11, 1990Advanced Pulmonary Technologies, Inc.Endotracheal tube with inflatable cuffs
US4977894 *Apr 7, 1989Dec 18, 1990Sheridan Catheter CorporationLaryngo-tracheal analgesia endotracheal tube
US5024668 *Jan 20, 1987Jun 18, 1991Rocky Mountain Research, Inc.Retrograde perfusion system, components and method
US5160325 *Jan 22, 1991Nov 3, 1992C. R. Bard, Inc.Catheter with novel lumens shapes
US5273534 *Feb 27, 1992Dec 28, 1993Knoepfler Dennis JLaparoscopic T-tube, drain and securing instrument and method therefor
US5312430 *Jun 28, 1991May 17, 1994Rosenbluth Robert FFor restoring patency to a collapsed portion of the urethra
US5314409 *Mar 11, 1993May 24, 1994Uva Patents FoundationCatheter for esophageal perfusion
US5324260 *Apr 27, 1992Jun 28, 1994Minnesota Mining And Manufacturing CompanyRetrograde coronary sinus catheter
US5328471 *Aug 4, 1993Jul 12, 1994Endoluminal Therapeutics, Inc.Method and apparatus for treatment of focal disease in hollow tubular organs and other tissue lumens
US5330498 *Dec 17, 1991Jul 19, 1994Hill John DBlood vessel occlusion trocar
US5389074 *Oct 27, 1993Feb 14, 1995The Regents Of The University Of CaliforniaBody insertion tube with anesthetic jacket
US5395331 *Feb 23, 1993Mar 7, 1995Minnesota Mining And Manufacturing CompanyRetrograde coronary sinus catheter having a ribbed balloon
US5419763 *Jan 4, 1994May 30, 1995Cortrak Medical, Inc.Prostatic drug-delivery catheter
US5425708 *Dec 11, 1992Jun 20, 1995Nissho CorporationCatheter with an aorta-occluding balloon
US5499996 *Mar 14, 1994Mar 19, 1996Hill; John D.For obstructing the flow of blood in a blood vessel
US5512045 *Dec 22, 1993Apr 30, 1996Gurchumelidze; Teimuraz P.Surgical decompression and irrigation apparatus and method
US5522838 *Jun 7, 1995Jun 4, 1996Hill; John D.For applying pressure to the exterior wall of a blood vessel
US5527336 *Mar 2, 1995Jun 18, 1996Boston Scientific CorporationMethod of treating the symptoms of a flow obstruction of a urethra
US5554119 *Jan 27, 1994Sep 10, 1996ScimedFor insertion into a vessel
US5556412 *Jun 7, 1995Sep 17, 1996Hill; John D.Blood vessel occlusion trocar
US5558642 *Feb 24, 1994Sep 24, 1996Scimed Life Systems, Inc.Drug delivery catheter
US5558644 *Jan 12, 1995Sep 24, 1996Heartport, Inc.Retrograde delivery catheter and method for inducing cardioplegic arrest
US5575815 *Oct 6, 1993Nov 19, 1996Endoluminal Therapeutics, Inc.Local polymeric gel therapy
US5582167 *Mar 2, 1994Dec 10, 1996Thomas Jefferson UniversityMethods and apparatus for reducing tracheal infection using subglottic irrigation, drainage and servoregulation of endotracheal tube cuff pressure
US5634946 *Jun 7, 1995Jun 3, 1997Focal, Inc.Placing solid, biocompatible, biodegradable polymeric material in contact with tissue surface, then controlled heating to fluidize polymer for coating and cooling to solidify
US5643208 *Jun 6, 1995Jul 1, 1997Parodi; Juan C.Balloon device for use in repairing an abdominal aortic aneurysm
US5662609 *Apr 13, 1994Sep 2, 1997Endoluminal Therapeutics, Inc.Method and apparatus for treatment of focal disease in hollow tubular organs and other tissue lumens
US5674287 *Jan 14, 1994Oct 7, 1997Endoluminal Therapeutics, Inc.Biodegradable polymeric endoluminal sealing process, apparatus and polymeric product for use therein
US5716340 *Sep 17, 1996Feb 10, 1998Scimed Life Systems, Inc.Blood perfusion catheter
US5738652 *Jan 17, 1997Apr 14, 1998Heartport, Inc.Retrograde delivery catheter and method for inducing cardioplegic arrest
US5749915 *Jun 7, 1995May 12, 1998Focal, Inc.Polymeric endoluminal paving process
US5749922 *Jun 7, 1995May 12, 1998Endoluminal Therapeutics, Inc.Biodegradable polymeric endoluminal sealing process, apparatus and polymeric products for use therein
US5752971 *Jun 5, 1995May 19, 1998Boston Scientific Technology, Inc.Method of treating a flow obstruction
US5755687 *Apr 1, 1997May 26, 1998Heartport, Inc.Methods and devices for occluding a patient's ascending aorta
US5765568 *Dec 1, 1995Jun 16, 1998Heartport, Inc.For delivering cardioplegic fluid to a patient's coronary arteries
US5769812 *Oct 16, 1996Jun 23, 1998Heartport, Inc.System for cardiac procedures
US5792094 *Sep 28, 1995Aug 11, 1998Heartport, Inc.Method of delivering cardioplegic fluid to a patient's heart
US5800375 *Dec 20, 1995Sep 1, 1998Heartport, Inc.Catheter system and method for providing cardiopulmonary bypass pump support during heart surgery
US5800538 *Jun 7, 1995Sep 1, 1998Endoluminal Therapeutics, Inc.Biodegradable polymeric endoluminal sealing process
US5810757 *Dec 1, 1995Sep 22, 1998Heartport, Inc.Catheter system and method for total isolation of the heart
US5819723 *Mar 1, 1995Oct 13, 1998Thomas Jefferson UniversityMethods and apparatus for reducing tracheal infection
US5836951 *Jun 7, 1995Nov 17, 1998Boston Scientific CorporationBalloon dilation catheter
US5843156 *May 6, 1994Dec 1, 1998Endoluminal Therapeutics, Inc.Local polymeric gel cellular therapy
US5885238 *May 30, 1995Mar 23, 1999Heartport, Inc.System for cardiac procedures
US5935103 *Jul 18, 1997Aug 10, 1999Heartport, Inc.Blood vessel occlusion device
US5941894 *Jul 18, 1997Aug 24, 1999Heartport, Inc.Blood vessel occlusion device
US5997505 *Jul 18, 1997Dec 7, 1999Heartport, Inc.Method of cannulating an ascending aorta using a blood vessel occlusion device
US6056723 *May 22, 1998May 2, 2000Heartport, Inc.Methods and devices for occluding a patient's ascending aorta
US6159178 *Jan 23, 1998Dec 12, 2000Heartport, Inc.Methods and devices for occluding the ascending aorta and maintaining circulation of oxygenated blood in the patient when the patient's heart is arrested
US6224619Sep 17, 1996May 1, 2001Heartport, Inc.Blood vessel occlusion trocar having size and shape varying insertion body
US6248086Feb 23, 1998Jun 19, 2001Heartport, Inc.Method for cannulating a patient's aortic arch and occluding the patient's ascending aortic arch
US6287320Aug 26, 1997Sep 11, 2001Endoluminal Therapeutics, Inc.Method and apparatus for treatment of focal disease in hollow tubular organs and other tissue lumens
US6290729Dec 3, 1997Sep 18, 2001Endoluminal Therapeutics, Inc.Local polymeric gel cellular therapy
US6293920Oct 7, 1998Sep 25, 2001Heartport, Inc.Catheter system and method for providing cardiopulmonary bypass pump support during heart surgery
US6344053Apr 5, 1999Feb 5, 2002Medtronic Ave, Inc.Endovascular support device and method
US6398752Jun 5, 1998Jun 4, 2002William P. Sweezer, Jr.Method of occluding a patient's ascending aorta and delivery cardioplegic fluid
US6423031Nov 1, 1999Jul 23, 2002Brian S. DonlonMethods and devices for occluding a patient's ascending aorta
US6443941Jul 24, 2000Sep 3, 2002Endoluminal Therapeutics, Inc.Introducing polycaprolactone pliable tube containing living cells into lumen of diseased organ; chemical or physical reconfiguration to mold polymer to wall of cavity; preventing abrupt reclosure or restenosis postangioplasty
US6482171Jan 13, 1997Nov 19, 2002Heartport, Inc.Multi-lumen catheter
US6589206Oct 10, 2000Jul 8, 2003Heartport, Inc.Methods and devices for occluding the ascending aorta and maintaining circulation of oxygenated blood in the patient when the patient's heart is arrested
US6634360 *Sep 2, 1999Oct 21, 2003Flodin BjoernDevice for supplying inhalation gas to and removing exhalation gas from a patient
US6648911Nov 20, 2000Nov 18, 2003Avantec Vascular CorporationMethod and device for the treatment of vulnerable tissue site
US6656219Nov 22, 2000Dec 2, 2003Dominik M. WiktorIntravascular stent
US6663661Oct 31, 2001Dec 16, 2003Medtronic Ave, Inc.Endovascular support device and method
US6699272Dec 13, 2001Mar 2, 2004Endoluminal Therapeutics, Inc.Biodegradable polymeric endoluminal sealing process, apparatus and polymeric products for use therein
US6796309 *Dec 7, 2001Sep 28, 2004Smith Group PlcTracheal tubes
US6827733Sep 24, 2003Dec 7, 2004Medtronic Ave, Inc.Endovascular support device and method
US6902556Jun 5, 2002Jun 7, 2005Heartport, Inc.Methods and devices for occluding the ascending aorta and maintaining circulation oxygenated blood in the patient when the patient's heart is arrested
US6923828Nov 22, 2000Aug 2, 2005Medtronic, Inc.Intravascular stent
US7780628 *May 1, 2000Aug 24, 2010Angiodynamics, Inc.Apparatus and methods for treating congestive heart disease
USRE29207 *Jan 24, 1975May 10, 1977Population Research IncorporatedDispensing method and apparatus
DE2711977A1 *Mar 18, 1977Dec 22, 1977Dow CorningGastrointestinaler schlauch
DE102007049282A1Oct 12, 2007Apr 16, 2009Georg-August-Universität Göttingen Stiftung Öffentlichen Rechts UniversitätsmedizinPharynxprofilschiene und dessen Verwendung zur Behandlung der Schlafapnoe und des Schnarchens
EP0241038A2 *Apr 9, 1987Oct 14, 1987TERUMO KABUSHIKI KAISHA trading as TERUMO CORPORATIONCatheter for repair of blood vessel
EP0265585A2 *May 11, 1987May 4, 1988Richard L. Nelson Jr.Long intestinal catheter with sump
EP0321614A1 *Dec 21, 1987Jun 28, 1989Reynaldo CalderonSystems for retrograde perfusion in the body for curing it of a disease or immune deficiency
EP0356468A1 *Dec 21, 1988Mar 7, 1990Reynaldo CalderonRetrograde perfusion
WO1988003006A1 *Oct 31, 1986May 5, 1988Robert E SchmuklerRetrograde coronary sinus perfusion device and method
WO1989001309A1 *Aug 8, 1988Feb 23, 1989Reynaldo CalderonImproved retrograde perfusion
WO1990001969A1 *Aug 23, 1989Mar 8, 1990Marvin J SlepianBiodegradable polymeric endoluminal sealing
WO2003080165A1 *Mar 20, 2003Oct 2, 2003Univ Texas Health Science Ct AAirway assembly
Classifications
U.S. Classification604/101.3, 604/256, 604/101.5
International ClassificationA61F2/958, A61M25/00, A61M1/00
Cooperative ClassificationA61M2025/0034, A61M25/1011, A61M2025/1052, A61M25/0032, A61M1/0084, A61M25/003
European ClassificationA61M25/00R1M6, A61M1/00T2